A process and an apparatus are disclosed for a compact processing assembly to recover propane, propylene, and heavier hydrocarbon components from a hydrocarbon gas stream. The gas stream is cooled, expanded to lower pressure, and fed to an absorbing means. A first distillation liquid stream from the
A process and an apparatus are disclosed for a compact processing assembly to recover propane, propylene, and heavier hydrocarbon components from a hydrocarbon gas stream. The gas stream is cooled, expanded to lower pressure, and fed to an absorbing means. A first distillation liquid stream from the absorbing means is fed to a mass transfer means. A first distillation vapor stream from the mass transfer means is cooled to partially condense it, forming a residual vapor stream and a condensed stream. The condensed stream is supplied as the top feed to the absorbing means. A second distillation vapor stream from the absorbing means is heated by cooling the first distillation vapor stream, combined with the residual vapor stream, and heated by cooling the gas stream. A second distillation liquid stream from the mass transfer means is heated in a heat and mass transfer means to strip out its volatile components.
대표청구항▼
1. A process for the separation of a gas stream containing methane, C2 components, C3 components, and heavier hydrocarbon components into a volatile residue gas fraction and a relatively less volatile fraction containing a major portion of said C3 components and heavier hydrocarbon components wherei
1. A process for the separation of a gas stream containing methane, C2 components, C3 components, and heavier hydrocarbon components into a volatile residue gas fraction and a relatively less volatile fraction containing a major portion of said C3 components and heavier hydrocarbon components wherein (1) said gas stream is cooled in a first heat exchange means;(2) said cooled gas stream is expanded to a lower pressure whereby the cooled gas stream is further cooled;(3) said expanded cooled gas stream is supplied as a bottom feed to an absorbing means housed in a single equipment item processing assembly;(4) a first distillation liquid stream is collected from a lower region of said absorbing means and supplied as a top feed to a mass transfer means housed in said processing assembly;(5) a first distillation vapor stream is collected from an upper region of said mass transfer means and cooled sufficiently to condense at least a part of said first distillation vapor stream in a second heat exchange means;(6) said at least partially condensed first distillation vapor stream is supplied to a separating means and is separated therein, thereby forming a condensed stream and a residual vapor stream containing any uncondensed vapor remaining after said first distillation vapor stream is cooled;(7) at least a portion of said condensed stream is supplied as a top feed to said absorbing means;(8) a second distillation vapor stream is collected from an upper region of said absorbing means and heated in said second heat exchange means, thereby to supply at least a portion of the cooling of step (5);(9) said heated second distillation vapor stream is combined with any said residual vapor stream to form a combined vapor stream;(10) said combined vapor stream is heated in said first heat exchange means, thereby to supply at least a portion of the cooling of step (1), and thereafter discharging said heated combined vapor stream as said volatile residue gas fraction;(11) a second distillation liquid stream is collected from a lower region of said mass transfer means and heated in a heat and mass transfer means housed in said processing assembly, thereby to simultaneously strip the more volatile components from said second distillation liquid stream, and thereafter discharging said heated and stripped second distillation liquid stream from said processing assembly as said relatively less volatile fraction; and(12) the quantities and temperatures of said feed streams to said absorbing means are effective to maintain the temperature of said upper region of said absorbing means at a temperature whereby the major portions of the components in said relatively less volatile fraction are recovered. 2. The process according to claim 1 wherein (a) said gas stream is cooled sufficiently to partially condense said gas stream in said first heat exchange means;(b) said partially condensed gas stream is supplied to a further separating means and is separated therein to provide a vapor stream and at least one liquid stream;(c) said vapor stream is expanded to lower pressure whereby said vapor stream is further cooled;(d) said expanded cooled vapor stream is supplied as said bottom feed to said absorbing means;(e) said at least one liquid stream is expanded to said lower pressure; and(f) said expanded at least one liquid stream is heated in said first heat exchange means, thereby to supply at least a portion of the cooling of step (a), and thereafter supplying said heated expanded at least one liquid stream as a bottom feed to said mass transfer means. 3. The process according to claim 1 wherein (a) said first distillation liquid stream is collected from said lower region of said absorbing means and heated in said second heat exchange means, with said heated first distillation liquid stream thereafter supplied as said top feed to mass transfer means; and(b) said first distillation vapor stream is collected from an upper region of said mass transfer means and cooled sufficiently to condense at least a part of said first distillation vapor stream in said second heat exchange means, thereby to supply at least a portion of the heating of step (a). 4. The process according to claim 3 wherein (i) said gas stream is cooled sufficiently to partially condense said gas stream in said first heat exchange means;(ii) said partially condensed gas stream is supplied to a further separating means and is separated therein to provide a vapor stream and at least one liquid stream;(iii) said vapor stream is expanded to lower pressure whereby said vapor stream is further cooled;(iv) said expanded cooled vapor stream is supplied as said bottom feed to said absorbing means;(v) said at least one liquid stream is expanded to said lower pressure; and(vi) said expanded at least one liquid stream is heated in said first heat exchange means, thereby to supply at least a portion of the cooling of step (i), and thereafter supplying said heated expanded at least one liquid stream as a bottom feed to said mass transfer means. 5. The process according to claim 1 wherein (a) said gas stream is partially cooled in said first heat exchange means;(b) said partially cooled gas stream is divided into first and second portions;(c) said first portion is further cooled in a further heat and mass transfer means housed in a further separating means, thereby to simultaneously condense any less volatile components from said first portion;(d) said second portion is further cooled in said first heat exchange means;(e) said further cooled first portion and said further cooled second portion are combined to form said cooled gas stream;(f) said first distillation liquid stream is collected from said lower region of said absorbing means and heated in said further heat and mass transfer means, thereby to supply at least a portion of the cooling of step (c), with said heated first distillation liquid stream thereafter supplied as said top teed to said mass transfer means; and(g) said combined vapor stream is heated in said first heat exchange means, thereby to supply at least a portion of the cooling of steps (a) and (d), and thereafter discharging said heated combined vapor stream as said volatile residue gas fraction. 6. The process according to claim 5 wherein (i) said further cooled second portion is directed to said further separating means so that any liquids condensed as said first portion is further cooled and as said second portion is further cooled are combined to form at least one liquid stream, with the remainder of said further cooled first portion and said further cooled second portion forming a vapor stream;(ii) said vapor stream is expanded to lower pressure whereby said vapor stream is further cooled;(iii) said expanded cooled vapor stream is supplied as said bottom feed to said absorbing means;(iv) said at least one liquid stream is expanded to said lower pressure; and(v) said expanded at least one liquid stream is heated in said first heat exchange means, thereby to supply at least a portion of said partial cooling of step (a), and thereafter supplying said heated expanded at least one liquid stream as a bottom feed to said mass transfer means. 7. The process according to claim 1 wherein (i) said gas stream is partially cooled in said first heat exchange means;(ii) said partially cooled gas stream is divided into first and second portions;(iii) said first portion is further cooled in a third heat exchange means;(iv) said second portion is further cooled in said first heat exchange means;(v) said further cooled first portion and said further cooled second portion are combined to form said cooled gas stream; and(vi) said first distillation liquid stream is collected from said lower region of said absorbing means and heated in said third heat exchange means, thereby to supply at least a portion of the cooling of step (iii), with said heated first distillation liquid stream thereafter supplied as said top feed to said mass transfer means. 8. The process according to claim 7 wherein (A) said further cooled first portion and said further cooled second portion are combined to form a partially condensed gas stream;(B) said partially condensed gas stream is supplied to said further separating means and is separated therein to provide a vapor stream and at least one liquid stream;(C) said vapor stream is expanded to lower pressure whereby said vapor stream is further cooled;(D) said expanded cooled vapor stream is supplied as said bottom feed to said absorbing means;(E) said at least one liquid stream is expanded to said lower pressure; and(F) said expanded at least one liquid stream is heated in said first heat exchange means, thereby to supply at least a portion of said partial cooling of step (A), and thereafter supplying said heated expanded at least one liquid stream as a bottom feed to said mass transfer means. 9. The process according to claim 2 wherein said further separating means is housed in said processing assembly. 10. The process according to claim 4 or 8 wherein said further separating means is housed in said processing assembly. 11. The process according to claim 5 or 6 wherein said further separating means is housed in said processing assembly. 12. The process according to claim 3 or 7 wherein (1) said heated first distillation liquid stream is supplied to said mass transfer means at an intermediate feed position;(2) said condensed stream is divided into at least first and second reflux streams;(3) said first reflux stream is supplied as said top feed to said absorbing means; and(4) said second reflux stream is supplied as said top feed to said mass transfer means. 13. The process according to claim 4 or 8 wherein (1) said heated first distillation liquid stream is supplied to said mass transfer means at an intermediate feed position;(2) said condensed stream is divided into at least first and second reflux streams;(3) said first reflux stream is supplied as said top feed to said absorbing means; and(4) said second reflux stream is supplied as said top feed to said mass transfer means. 14. The process according to claim 5 or 6 wherein (1) said heated first distillation liquid stream is supplied to said mass transfer means at an intermediate feed position;(2) said condensed stream is divided into at least first and second reflux streams;(3) said first reflux stream is supplied as said top feed to said absorbing means; and(4) said second reflux stream is supplied as said top feed to said mass transfer means. 15. The process according to claim 10 wherein (1) said heated first distillation liquid stream is supplied to said mass transfer means at an intermediate teed position;(2) said condensed stream is divided into at least first and second reflux streams;(3) said first reflux stream is supplied as said top feed to said absorbing means; and(4) said second reflux stream is supplied as said top feed to said mass transfer means. 16. The process according to claim 11 wherein (1) said heated first distillation liquid stream is supplied to said mass transfer means at an intermediate feed position;(2) said condensed stream is divided into at least first and second reflux streams;(3) said first reflux stream is supplied as said top feed to said absorbing means; and(4) said second reflux stream is supplied as said top feed to said mass transfer means. 17. The process according to claim 1, 3 or 7 wherein (1) a gas collecting means is housed in said processing assembly;(2) an additional heat and mass transfer means is included inside said gas collecting means, said additional heat and mass transfer means including one or more passes for an external refrigeration medium;(3) said cooled gas stream is supplied to said gas collecting means and directed to said additional heat and mass transfer means to be further cooled by said external refrigeration medium; and(4) said further cooled gas stream is expanded to said lower pressure and thereafter supplied as said bottom feed to said absorbing means. 18. The process according to claim 12 wherein (1) a gas collecting means is housed in said processing assembly;(2) an additional heat and mass transfer means is included inside said gas collecting means, said additional heat and mass transfer means including one or more passes for an external refrigeration medium;(3) said cooled gas stream is supplied to said gas collecting means and directed to said additional heat and mass transfer means to be further cooled by said external refrigeration medium; and(4) said further cooled gas stream is expanded to said lower pressure and thereafter supplied as said bottom feed to said absorbing means. 19. The process according to claim 9, 2, 4 or 8 wherein (1) an additional heat and mass transfer means is included inside said further separating means, said additional heat and mass transfer means including one or more passes for an external refrigeration medium;(2) said vapor stream is directed to said additional heat and mass transfer means to be cooled by said external refrigeration medium to form additional condensate; and(3) said condensate becomes a part of said at least one liquid stream separated therein. 20. The process according to claim 10 wherein (1) an additional heat and mass transfer means is included inside said further separating means, said additional heat and mass transfer means including one or more passes for an external refrigeration medium;(2) said vapor stream is directed to said additional heat and mass transfer means to be cooled by said external refrigeration medium to form additional condensate; and(3) said condensate becomes a part of said at least one liquid stream separated therein. 21. The process according to claim 13 wherein (1) an additional heat and mass transfer means is included inside said further separating means, said additional heat and mass transfer means including one or more passes for an external refrigeration medium;(2) said vapor stream is directed to said additional heat and mass transfer means to be cooled by said external refrigeration medium to form additional condensate; and(3) said condensate becomes a part of said at least one liquid stream separated therein. 22. The process according to claim 15 wherein (1) an additional heat and mass transfer means is included inside said further separating means, said additional heat and mass transfer means including one or more passes for an external refrigeration medium;(2) said vapor stream is directed to said additional heat and mass transfer means to be cooled by said external refrigeration medium to form additional condensate; and(3) said condensate becomes a part of said at least one liquid stream separated therein. 23. An apparatus for the separation of a gas stream containing methane, C2 components, C3 components, and heavier hydrocarbon components into a volatile residue gas fraction and a relatively less volatile fraction containing a major portion of said C3 components and heavier hydrocarbon components comprising (1) first heat exchange means to cool said gas stream;(2) expansion means connected to said first heat exchange means to receive said cooled gas stream and expand said cooled gas stream to lower pressure;(3) absorbing means housed in a single equipment item processing assembly and connected to said expansion means to receive said expanded cooled gas stream as a bottom feed thereto;(4) first liquid collecting means housed in said processing assembly and connected to said absorbing means to receive a first distillation liquid stream from a lower region of said absorbing means;(5) mass transfer means housed in said processing assembly and connected to said first liquid collecting means to receive said first distillation liquid stream as a top feed thereto;(6) first vapor collecting means housed in said processing assembly and connected to said mass transfer means to receive a first distillation vapor stream from an upper region of said mass transfer means;(7) second heat exchange means connected to said first vapor collecting means to receive said first distillation vapor stream and cool said first distillation vapor stream sufficiently to condense at least a part of said first distillation vapor stream;(8) separating means connected to said second heat exchange means to receive said at least partially condensed first distillation vapor stream and separate said at least partially condensed first distillation vapor stream into a condensed stream and a residual vapor stream containing any uncondensed vapor remaining after said first distillation vapor stream is cooled;(9) said absorbing means being further connected to said separating means to receive at least a portion of said condensed stream as a top feed thereto;(10) second vapor collecting means housed in said processing assembly and connected to said absorbing means to receive a second distillation vapor stream from an upper region of said absorbing means;(11) said second heat exchange means being further connected to said second vapor collecting means to receive said second distillation vapor stream and heat said second distillation vapor stream, thereby to supply at least a portion of the cooling of step (7);(12) combining means connected to said second heat exchange means and said separating means to receive said heated second distillation vapor stream and any said residual vapor stream and form a combined vapor stream;(13) said first heat exchange means being further connected to said combining means to receive said combined vapor stream and heat said combined vapor stream, thereby to supply at least a portion of the cooling of step (1), and thereafter discharging said heated combined vapor stream as said volatile residue gas fraction;(14) second liquid collecting means housed in said processing assembly and connected to said mass transfer means to receive a second distillation liquid stream from a lower region of said mass transfer means;(15) heat and mass transfer means housed in said processing assembly and connected to said second liquid collecting means to receive said second distillation liquid stream and heat said second distillation liquid stream, thereby to simultaneously strip the more volatile components from said second distillation liquid stream, and thereafter discharging said heated and stripped second distillation liquid stream from said processing assembly as said relatively less volatile fraction; and(16) control means adapted to regulate the quantities and temperatures of said feed streams to said absorbing means to maintain the temperature of said upper region of said absorbing means at a temperature whereby the major portions of the components in said relatively less volatile fraction are recovered. 24. The apparatus according to claim 23 wherein (a) said first heat exchange means is adapted to cool said gas stream sufficiently to partially condense said gas stream;(b) a further separating means is connected to said first heat exchange means to receive said partially condensed gas stream and separate said partially condensed gas stream into a vapor stream and at least one liquid stream;(c) said expansion means is connected to said further separating means to receive said vapor stream and expand said vapor stream to lower pressure whereby said vapor stream is further cooled;(d) said absorbing means is connected to said expansion means to receive said expanded cooled vapor stream as said bottom feed thereto;(e) a further expansion means is connected to said further separating means to receive said at least one liquid stream and expand said at least one liquid stream to said lower pressure; and(f) said first heat exchange means is further connected to said further expansion means to receive said expanded at least one liquid stream and heat said expanded at least one liquid stream, thereby to supply at least a portion of the cooling of step (a), said first heat exchange means being further connected to said mass transfer means to supply said heated expanded at least one liquid stream as a bottom feed thereto. 25. The apparatus according to claim 23 wherein (a) said second heat exchange means is further connected to said first liquid collecting means to receive said first distillation liquid stream and heat said first distillation liquid stream, thereby to supply at least a portion of said cooling of said first distillation vapor stream;(b) said mass transfer means is connected to said second heat exchange means to receive said heated first distillation liquid stream as said top feed thereto; and(c) said second heat exchange means is further connected to said first vapor collecting means to receive said first distillation vapor stream and cool said first distillation vapor stream sufficiently to condense at least a part of said first distillation vapor stream, thereby to supply at least a portion of the heating of step (a). 26. The apparatus according to claim 25 wherein (i) said first heat exchange means is adapted to cool said gas stream sufficiently to partially condense said gas stream;(ii) a further separating means is connected to said first heat exchange means to receive said partially condensed gas stream and separate said partially condensed gas stream into a vapor stream and at least one liquid stream;(iii) said expansion means is connected to said further separating means to receive said vapor stream and expand said vapor stream to lower pressure whereby said vapor stream is further cooled;(iv) said absorbing means is connected to said expansion means to receive said expanded cooled vapor stream as said bottom feed thereto;(v) a further expansion means is connected to said further separating means to receive said at least one liquid stream and expand said at least one liquid stream to said lower pressure; and(vi) said first heat exchange means is further connected to said further expansion means to receive said expanded at least one liquid stream and heat said expanded at least one liquid stream, thereby to supply at least a portion of the cooling of step (i), said first heat exchange means being further connected to said mass transfer means to supply said heated expanded at least one liquid stream as a bottom feed thereto. 27. The apparatus according to claim 23 wherein (a) said first heat exchange means is adapted to partially cool said gas stream;(b) a dividing means is connected to said first heat exchange means to receive said partially cooled gas stream and divide said partially cooled gas stream into first and second portions;(c) a further heat and mass transfer means is housed in a further separating means and is connected to said dividing means to receive said first portion and further cool said first portion, thereby to simultaneously condense any less volatile components from said first portion;(d) said first heat exchange means is further connected to said dividing means to receive said second portion and further cool said second portion;(e) a further combining means is connected to said further heat and mass transfer means and said first heat exchange means to receive said further cooled first portion and said further cooled second portion and form a cooled gas stream; (f) said expansion means is connected to said further combining means to receive said cooled gas stream and expand said cooled gas stream to lower pressure;(g) said further heat and mass transfer means is further connected to said first liquid collecting means to receive said first distillation liquid stream and heat said first distillation liquid stream, thereby to supply at least a portion of the cooling of step (c);(h) said mass transfer means is connected to said further heat and mass transfer means to receive said heated first distillation liquid stream as said top feed thereto; and(i) said first heat exchange means is further connected to said combining means to receive said combined vapor stream and heat said combined vapor stream, thereby to supply at least a portion of the cooling of steps (a) and (d), and thereafter discharging said heated combined vapor stream as said volatile residue gas fraction. 28. The apparatus according to claim 27 wherein (i) said further separating means is further connected to said first heat exchange means to receive said further cooled second portion so that any liquids condensed as said first portion is further cooled and as said second portion is further cooled are combined to form at least one liquid stream, with the remainder of said further cooled first portion and said further cooled second portion forming a vapor stream;(ii) said expansion means is connected to said further separating means to receive said vapor stream and expand said vapor stream to lower pressure whereby said vapor stream is further cooled;(iii) said absorbing means is connected to said expansion means to receive said expanded cooled vapor stream as said bottom feed thereto;(iv) a further expansion means is connected to said further separating means to receive said at least one liquid stream and expand said at least one liquid stream to said lower pressure; and(v) said first heat exchange means is further connected to said further expansion means to receive said expanded at least one liquid stream and heat said expanded at last one liquid stream, thereby to supply at least a portion of said partial cooling of step (a), said first heat exchange means being further connected to said mass transfer means to supply said heated expanded at least one liquid stream as a bottom feed thereto. 29. The apparatus according to claim 27 wherein (i) a third heat exchange means is connected to said dividing means to receive said first portion and further cool said first portion;(ii) said further combining means is connected to said third heat exchange means and said first heat exchange means to receive said further cooled first portion and said further cooled second portion and form said cooled gas stream;(iii) said third heat exchange means is further connected to said first liquid collecting means to receive said first distillation liquid stream and heat said first distillation liquid stream, thereby to supply at least a portion of the cooling of step (i); and(iv) said mass transfer means is connected to said third heat exchange means to receive said heated first distillation liquid stream as said top feed thereto. 30. The apparatus according to claim 29 wherein (A) said further combining means is adapted to receive said further cooled first portion and said further cooled second portion and form a partially condensed gas stream;(B) said further separating means is connected to said further combining means to receive said partially condensed gas stream and separate said partially condensed gas stream into a vapor stream and at least one liquid stream;(C) said expansion means is connected to said further separating means to receive said vapor stream and expand said vapor stream to lower pressure whereby said vapor stream is further cooled;(D) said absorbing means is connected to said expansion means to receive said expanded cooled vapor stream as said bottom feed thereto;(E) a further expansion means is connected to said further separating means to receive said at least one liquid stream and expand said at least one liquid stream to said lower pressure; and(F) said first heat exchange means is further connected to said further expansion means to receive said expanded at least one liquid stream and heat said expanded at least one liquid stream, thereby to supply at least a portion of said partial cooling of step (A), said first heat exchange means being further connected to said mass transfer means to supply said heated expanded at least one liquid stream as a bottom feed thereto. 31. The apparatus according to claim 24 wherein said further separating means is housed in said processing assembly. 32. The apparatus according to claim 26 wherein said further separating means is housed in said processing assembly. 33. The apparatus according to claim 26 or 28 wherein said further separating means is housed in said processing assembly. 34. The apparatus according to claim 30 wherein said further separating means is housed in said processing assembly. 35. The apparatus according to claim 25 wherein (1) said mass transfer means is adapted to be connected to said second heat exchange means to receive said heated first distillation liquid stream at an intermediate feed position;(2) a dividing means is connected to said separating means to receive said condensed stream and divide said condensed stream into at least first and second reflux streams;(3) said absorbing means is adapted to be connected to said dividing means to receive said first reflux stream as said top feed thereto; and(4) said mass transfer means is adapted to be connected to said dividing means to receive said second reflux stream as said top feed thereto. 36. The apparatus according to claim 29 wherein (1) said mass transfer means is adapted to be connected to said second heat exchange means to receive said heated first distillation liquid stream at an intermediate feed position;(2) an additional dividing means is connected to said separating means to receive said condensed stream and divide said condensed stream into at least first and second reflux streams;(3) said absorbing means is adapted to be connected to said additional dividing means to receive said first reflux stream as said top feed thereto; and(4) said mass transfer means is adapted to be connected to said additional dividing means to receive said second reflux stream as said top feed thereto. 37. The apparatus according to claim 26 wherein (1) said mass transfer means is adapted to be connected to said second heat exchange means to receive said heated first distillation liquid stream at an intermediate feed position;(2) a dividing means is connected to said second separating means to receive said condensed stream and divide said condensed stream into at least first and second reflux streams;(3) said absorbing means is adapted to be connected to said dividing means to receive said first reflux stream as said top feed thereto; and(4) said mass transfer means is adapted to be connected to said dividing means to receive said second reflux stream as said top feed thereto. 38. The apparatus according to claim 27 or 28 wherein (1) said mass transfer means is adapted to be connected to said further heat and mass transfer means to receive said heated first distillation liquid stream at an intermediate feed position;(2) an additional dividing means is connected to said separating means to receive said condensed stream and divide condensed stream into at least first and second reflux streams;(3) said absorbing means is adapted to be connected to said additional dividing means to receive said first reflux stream as said top feed thereto; and(4) said mass transfer means is adapted to be connected to said additional dividing means to receive said second reflux stream as said top feed thereto. 39. The apparatus according to claim 34 or 30 wherein (1) said mass transfer means is adapted to be connected to said second heat exchange means to receive said heated first distillation liquid stream at an intermediate feed position;(2) an additional dividing means is connected to said separating means to receive said condensed stream and divide said condensed stream into at least first and second reflux streams;(3) said absorbing means is adapted to be connected to said additional dividing means to receive said first reflux stream as said top feed thereto; and(4) said mass transfer means is adapted to be connected to said additional dividing means to receive said second reflux stream as said top feed thereto. 40. The apparatus according to claim 32 wherein (1) said mass transfer means is adapted to be connected to said third heat exchange means to receive said heated first distillation liquid stream at an intermediate feed position;(2) a dividing means is connected to said second separating means to receive said condensed stream and divide said condensed stream into at least first and second reflux streams;(3) said absorbing means is adapted to be connected to said dividing means to receive said first reflux stream as said top teed thereto; and(4) said mass transfer means is adapted to be connected to said dividing means to receive said second reflux stream as said top feed thereto. 41. The apparatus according to claim 33 wherein (1) said mass transfer means is adapted to be connected to said further heat and mass means to receive said heated first distillation liquid stream at an intermediate feed position;(2) an additional dividing means is connected to said second separating means to receive said condensed stream and divide said condensed stream into at least first and second reflux streams;(3) said absorbing means is adapted to be connected to said additional dividing means to receive said first reflux stream as said top feed thereto; and(4) said mass transfer means is adapted to be connected to said additional dividing means to receive said second reflux stream as said top feed thereto. 42. The apparatus according to claim 23, 35, or 25 wherein (1) a gas collecting means is housed in said processing assembly;(2) an additional heat and mass transfer means is included inside said gas collecting means, said additional heat and mass transfer means including one or mote passes for an external refrigeration medium;(3) said gas collecting means is connected to said first heat exchange means to receive said cooled gas stream and direct said cooled gas stream to said additional heat and mass transfer means to be further cooled by said external refrigeration medium; and(4) said expansion means is adapted to be connected to said gas collecting means to receive said further cooled gas stream and expand further cooled gas stream to said lower pressure, said expansion means being further connected to said absorbing means to supply said expanded further cooled gas stream as said bottom feed thereto. 43. The apparatus according to claim 36 or 29 wherein (1) a gas collecting means is housed in said processing assembly;(2) an additional heat and mass transfer means is included inside said gas collecting means, said additional heat and mass transfer means including one or more passes for an external refrigeration medium;(3) said gas collecting means is connected to said further combining means to receive said cooled gas stream and direct said cooled gas stream to said additional heat and mass transfer means to be further cooled by said external refrigeration medium; and(4) said expansion means is adapted to be connected to said gas collecting means to receive said further cooled gas stream and expand said further cooled gas stream to said lower pressure, said expansion means being further connected to said absorbing means to supply said expanded further cooled gas stream as said bottom feed thereto. 44. The apparatus according to claim 31, 32, 34, 37, 40, 24, 26 or 30 wherein (1) an additional heat and mass transfer means is included inside said further separating means, said additional heat and mass transfer means including one or more passes for an external refrigeration medium;(2) said vapor stream is directed to said additional heat and mass transfer means to be cooled by said external refrigeration medium to form additional condensate; and(3) said condensate becomes a part of said at least one liquid stream separated therein. 45. The apparatus according to claim 39 wherein (1) an additional heat and mass transfer means is included inside said further separating means, said additional heat and mass transfer means including one or more passes for an external refrigeration medium;(2) said vapor stream is directed to said additional heat and mass transfer means to be cooled by said external refrigeration medium to form additional condensate; and(3) said condensate becomes a part of said at least one liquid stream separated therein.
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Phillips ; Benjamin A., Absorption heat pump absorber unit and absorption method.
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Miller, Scott A.; Wilkinson, John D.; Lynch, Joe T.; Hudson, Hank M.; Cuellar, Kyle T.; Johnke, Andrew F.; Lewis, W. Larry, Hydrocarbon gas processing.
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