IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0781259
(2010-05-17)
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등록번호 |
US-9939195
(2018-04-10)
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발명자
/ 주소 |
- Johnke, Andrew F.
- Lewis, W. Larry
- Wilkinson, John D.
- Lynch, Joe T.
- Hudson, Hank M.
- Cuellar, Kyle T.
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출원인 / 주소 |
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대리인 / 주소 |
Fitzpatrick, Cella, Harper & Scinto
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인용정보 |
피인용 횟수 :
0 인용 특허 :
52 |
초록
▼
A process and an apparatus are disclosed for a compact processing assembly to recover ethane, ethylene, and heavier hydrocarbon components from a hydrocarbon gas stream. The gas stream is cooled and divided into first and second streams. The first stream is further cooled, expanded to lower pressure
A process and an apparatus are disclosed for a compact processing assembly to recover ethane, ethylene, and heavier hydrocarbon components from a hydrocarbon gas stream. The gas stream is cooled and divided into first and second streams. The first stream is further cooled, expanded to lower pressure, and supplied as a feed between two absorbing means. The second stream is expanded to lower pressure and supplied as a bottom feed to the lower absorbing means. A distillation liquid stream from the bottom of the lower absorbing means is heated in a heat and mass transfer means to strip out its volatile components. A distillation vapor stream from the top of the heat and mass transfer means is cooled by a distillation vapor stream from the top of the upper absorbing means, thereby forming a condensed stream that is supplied as a top feed to the upper absorbing means.
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 C2 components, C3 components, and heavier hydrocarbon c
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 C2 components, C3 components, and heavier hydrocarbon components or said C3 components and heavier hydrocarbon components wherein (1) said gas stream is divided into first and second portions;(2) said first portion is cooled;(3) said second portion is cooled;(4) said cooled first portion is combined with said cooled second portion to form a cooled gas stream;(5) said cooled gas stream is divided into first and second streams;(6) said first stream is cooled to condense substantially all of it and is thereafter expanded to lower pressure whereby it is further cooled;(7) said expanded cooled first stream is supplied as a feed between first and second absorbing means housed in a single equipment item processing assembly, said first absorbing means being located above said second absorbing means;(8) said second stream is expanded to said lower pressure and is supplied as a bottom feed to said second absorbing means;(9) a distillation liquid stream is collected from a lower region of said second absorbing means and heated in a means for providing heat and mass transfer that is housed in said processing assembly, said means for providing heat and mass transfer being configured to provide heat exchange between (a) said second portion flowing through one pass of said means for providing heat and mass transfer and(b) said distillation liquid stream flowing downward from said second absorbing means,so that said second portion is cooled while heating said distillation liquid stream before it leaves said means for providing heat and mass transfer; and wherein as said distillation liquid stream is heated, a portion of it is vaporized to form stripping vapors that rise upward as the remaining liquid continues flowing downward through said means for providing heat and mass transfer; and wherein said means for providing heat and mass transfer provides continuous contact between said stripping vapors and said remaining liquid so that said means for providing heat and mass transfer also functions to provide mass transfer between vapor and liquid phases, stripping said remaining liquid of methane and lighter components; and wherein said means for providing heat and mass transfer supplies at least a portion of the cooling of step (3) while simultaneously stripping the more volatile components from said distillation liquid stream, and thereafter discharging said heated and stripped remaining liquid from said processing assembly as said relatively less volatile fraction; wherein said means for providing heat and mass transfer does not include external reboilers;(10) a first distillation vapor stream is collected from an upper region of said means for providing heat and mass transfer and cooled sufficiently to condense at least a part of it, thereby forming a condensed stream and a residual vapor stream containing uncondensed vapor remaining after said first distillation vapor stream is cooled;(11) at least a portion of said condensed stream is supplied as a top feed to said first absorbing means;(12) a second distillation vapor stream is collected from an upper region of said first absorbing means and heated;(13) said heated second distillation vapor stream is combined with said residual vapor stream to form a combined vapor stream;(14) said combined vapor stream is heated, thereafter discharging said heated combined vapor stream from said processing assembly as said volatile residue gas fraction;(15) said heating of said second distillation vapor stream and said combined vapor stream is accomplished in one or more means for providing heat exchange that is housed in said processing assembly, said one or more means for providing heat exchange being configured to provide heat exchange between (a) said first distillation vapor stream flowing through one pass of said one or more means for providing heat exchange, and(b) said second distillation vapor stream arising from said first absorbing means inside said processing assembly,so that said first distillation vapor stream is cooled to at least partial condensation while heating said second distillation vapor stream, thereby forming said condensed stream and said residual vapor stream; and wherein said one or more means for providing heat exchange is further configured to provide heat exchange between(c) said first stream flowing through another pass of said one or more means for providing heat exchange, and(d) said combined vapor stream flowing through said another pass of said one or more means for providing heat exchange inside said processing assembly,so that said first stream is cooled to substantial condensation while heating said combined vapor stream; and wherein said one or more means for providing heat exchange is further configured to provide heat exchange between(e) said first portion flowing through a further pass of said one or more means for providing heat exchange, and(f) said heated combined vapor stream arising from said another pass of said one or more means for providing heat exchange inside said processing assembly,so that said first portion is cooled while further heating said heated combined vapor stream to form said volatile residue gas fraction, and wherein said one or more means for providing heat exchange supplies at least a portion of the cooling of steps (2), (6), and (10); wherein said one or more heat exchange means does not include external reflux equipment items; and(16) the quantities and temperatures of said feed streams to said first and second absorbing means are effective to maintain the temperature of said upper region of said first 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 cooled first portion is combined with said cooled second portion to form a partially condensed gas stream;(b) said partially condensed gas stream is supplied to a separating means and is separated therein to provide a vapor stream and at least one liquid stream;(c) said vapor stream is divided into said first and second streams; and(d) at least a portion of said at least one liquid stream is expanded to said lower pressure and is supplied as a feed to said processing assembly below said second absorbing means and above said heat and mass transfer means. 3. The process according to claim 2 wherein (a) said first stream is combined with said at least one liquid stream to form a combined stream;(b) said combined stream is cooled to condense substantially all of it and is thereafter expanded to lower pressure whereby it is further cooled;(c) said expanded cooled combined stream is supplied as said feed between said first and second absorbing means; and(d) said heating of said second distillation vapor stream and said combined vapor stream is accomplished in said one or more means for providing heat exchange housed in said processing assembly, thereby to supply at least a portion of the cooling of steps (2), (10), and (b). 4. The process according to claim 2 wherein said separating means is housed in said processing assembly. 5. The process according to claim 3 wherein said separating means is housed in said processing assembly. 6. The process according to claim 2 wherein (1) said means for providing heat and mass transfer is arranged in upper and lower regions; and(2) said expanded at least a portion of said at least one liquid stream is supplied to said processing assembly to enter between said upper and lower regions of said means for providing heat and mass transfer. 7. The process according to claim 4 wherein (1) said heat and mass transfer means is arranged in upper and lower regions; and(2) said expanded at least a portion of said at least one liquid stream is supplied to said processing assembly to enter between said upper and lower regions of said means for providing heat and mass transfer. 8. The process according to claim 1 wherein (1) a gas collecting means is housed in said processing assembly;(2) an additional means for providing heat and mass transfer is included inside said gas collecting means, said additional means for providing heat and mass transfer 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 means for providing heat and mass transfer to be further cooled by said external refrigeration medium; and(4) said further cooled gas stream is divided into said first and second streams. 9. 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 C2 components, C3 components, and heavier hydrocarbon components or said C3 components and heavier hydrocarbon components comprising (1) first dividing means to divide said gas stream into first and second portions;(2) one or more means for providing heat exchange housed in a single equipment item processing assembly and connected to said first dividing means to receive said first portion and cool it;(3) means for providing heat and mass transfer housed in said processing assembly and connected to said first dividing means to receive said second portion and cool it;(4) first combining means connected to said one or more means for providing heat exchange and said means for providing heat and mass transfer to receive said cooled first portion and said cooled second portion and form a cooled gas stream;(5) second dividing means connected to said first combining means to receive said cooled gas stream and divide it into first and second streams;(6) said one or more means for providing heat exchange being further connected to said second dividing means to receive said first stream and cool it sufficiently to substantially condense it;(7) first expansion means connected to said one or more means for providing heat exchange to receive said substantially condensed first stream and expand it to lower pressure;(8) first and second absorbing means housed in said processing assembly and connected to said first expansion means to receive said expanded cooled first stream as a feed thereto between said first and second absorbing means, said first absorbing means being located above said second absorbing means;(9) second expansion means connected to said second dividing means to receive said second stream and expand it to said lower pressure, said second expansion means being further connected to said second absorbing means to supply said expanded second stream as a bottom feed thereto;(10) liquid collecting means housed in said processing assembly and connected to said second absorbing means to receive a distillation liquid stream from a lower region of said second absorbing means;(11) said means for providing heat and mass transfer being further connected to said liquid collecting means to receive said distillation liquid stream and heat it, said means for providing heat and mass transfer being configured to provide heat exchange between (a) said second portion flowing through one pass of said means for providing heat and mass transfer and(b) said distillation liquid stream flowing downward from said second absorbing means,so that said second portion is cooled while heating said distillation liquid stream before it leaves said means for providing heat and mass transfer; and wherein as said distillation liquid stream is heated, a portion of it is vaporized to form stripping vapors that rise upward as the remaining liquid continues flowing downward through said means for providing heat and mass transfer, and wherein said means for providing heat and mass transfer provides continuous contact between said stripping vapors and said remaining liquid so that said means for providing heat and mass transfer also functions to provide mass transfer between vapor and liquid phases, stripping said remaining liquid of methane and lighter components; and wherein said means for providing heat and mass transfer supplies at least a portion of the cooling of step (3) while simultaneously stripping the more volatile components from said distillation liquid stream, and thereafter discharging said heated and stripped remaining liquid from said processing assembly as said relatively less volatile fraction; wherein said means for providing heat and mass transfer does not include external reboilers;(12) first vapor collecting means housed in said processing assembly and connected to said means for providing heat and mass transfer to receive a first distillation vapor stream from an upper region of said means for providing heat and mass transfer;(13) said one or more means for providing heat exchange being further connected to said first vapor collecting means to receive said first distillation vapor stream and cool it sufficiently to condense at least a part of it, thereby forming a condensed stream and a residual vapor stream containing any uncondensed vapor remaining after said first distillation vapor stream is cooled;(14) said first absorbing means being further connected to said one or more means for providing heat exchange to receive at least a portion of said condensed stream as a top feed thereto;(15) second vapor collecting means housed in said processing assembly and connected to said first absorbing means to receive a second distillation vapor stream from an upper region of said first absorbing means;(16) said one or more means for providing heat exchange being further connected to said second vapor collecting means to receive said second distillation vapor stream and heat it, thereby to supply at least a portion of the cooling of step (13);(17) second combining means connected to said one or more means for providing heat exchange to receive said heated second distillation vapor stream and any said residual vapor stream and form a combined vapor stream;(18) said one or more means for providing heat exchange being further connected to said second combining means to receive said combined vapor stream and heat it, thereby to supply at least a portion of the cooling of steps (2) and (6), and thereafter discharging said heated combined vapor stream from said processing assembly as said volatile residue gas fraction; said one or more means for providing heat exchange being configured to provide heat exchange between (a) said first distillation vapor stream flowing through one pass of said one or more means for providing heat exchange, and(b) said second distillation vapor stream arising from said first absorbing means inside said processing assembly,so that said first distillation vapor stream is cooled to at least partial condensation while heating said second distillation vapor stream, thereby forming said condensed stream and said residual vapor stream; and wherein said one or more means for providing heat exchange is further configured to provide heat exchange between(c) said first stream flowing through another pass of said one or more means for providing heat exchange, and(d) said combined vapor stream flowing through said another pass of said one or more means for providing heat exchange inside said processing assembly,so that said first stream is cooled to substantial condensation while heating said combined vapor stream; and wherein said one or more means for providing heat exchange is further configured to provide heat exchange between(e) said first portion flowing through a further pass of said one or more means for providing heat exchange, and(f) said heated combined vapor stream arising from said another pass of said one or more means for providing heat exchange inside said processing assembly,so that first portion is cooled while further heating said heated combined vapor stream to form said volatile residue gas fraction, wherein said one or more heat exchange means does not include external reflux equipment items; and(19) control means adapted to regulate the quantities and temperatures of said feed streams to said first and second absorbing means to maintain the temperature of said upper region of said first absorbing means at a temperature whereby the major portions of the components in said relatively less volatile fraction are recovered. 10. The apparatus according to claim 9 wherein (a) the first combining means is adapted to receive said cooled first portion and said cooled second portion and form a partially condensed gas stream;(b) a separating means is connected to said first combining means to receive said partially condensed gas stream and separate it into a vapor stream and at least one liquid stream;(c) said second dividing means is connected to said separating means to receive said vapor stream and divide it into said first and second streams; and(d) a third expansion means is connected to said separating means to receive at least a portion of said at least one liquid stream and expand it to said lower pressure, said third expansion means being further connected to said processing assembly to supply said expanded at least a portion of said at least one liquid stream as a feed thereto below said second absorbing means and above said means for providing heat and mass transfer. 11. The apparatus according to claim 10 wherein (a) a third combining means is connected to said second dividing means and said separating means to receive said first stream and said at least one liquid stream and form a combined stream;(b) said one or more means for providing heat exchange is further connected to said third combining means to receive said combined stream and cool it sufficiently to substantially condense it;(c) said first expansion means is connected to said one or more means for providing heat exchange to receive said substantially condensed combined stream and expand it to lower pressure;(d) said first and second absorbing means are connected to said first expansion means to receive said expanded cooled combined stream as said feed thereto between said first and second absorbing means; and(e) said one or more means for providing heat exchange being further connected to said second combining means to receive said combined vapor stream and heat it, thereby to supply at least a portion of the cooling of steps (2) and (b). 12. The apparatus according to claim 10 wherein said separating means is housed in said processing assembly. 13. The apparatus according to claim 11 wherein said separating means is housed in said processing assembly. 14. The apparatus according to claim 10 wherein (1) said means for providing heat and mass transfer is arranged in upper and lower regions; and(2) said processing assembly is connected to said third expansion means to receive said expanded at least a portion of said at least one liquid stream and direct it between said upper and lower regions of said heat and mass transfer means. 15. The apparatus according to claim 9 wherein (1) a gas collecting means is housed in said processing assembly;(2) an additional means for providing heat and mass transfer is included inside said gas collecting means, said additional means for providing heat and mass transfer including one or more passes for an external refrigeration medium;(3) said gas collecting means is connected to said first combining means to receive said cooled gas stream and direct it to said additional means for providing heat and mass transfer to be further cooled by said external refrigeration medium; and(4) said second dividing means is adapted to be connected to said gas collecting means to receive said further cooled gas stream and divide it into said first and second streams. 16. 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 C2 components, C3 components, and heavier hydrocarbon components or said C3 components and heavier hydrocarbon components wherein (1) said gas stream is divided into first and second portions;(2) said first portion is cooled;(3) said second portion is cooled;(4) said cooled first portion is combined with said cooled second portion to form a cooled gas stream;(5) said cooled gas stream is divided into first and second streams;(6) said first stream is cooled to condense substantially all of it and is thereafter expanded to lower pressure whereby it is further cooled;(7) said expanded cooled first stream is supplied as a feed between first and second absorbing means housed in a single equipment item processing assembly, said first absorbing means being located above said second absorbing means;(8) said second stream is expanded to said lower pressure and is supplied as a bottom feed to said second absorbing means;(9) a distillation liquid stream is collected from a lower region of said second absorbing means and heated in a heat and mass transfer means housed in said processing assembly, said means for providing heat and mass transfer being configured to provide heat exchange between (a) said second portion flowing through one pass of said means for providing heat and mass transfer and(b) said distillation liquid stream flowing downward from said second absorbing means,so that said second portion is cooled while heating said distillation liquid stream before it leaves said means for providing heat and mass transfer; and wherein as said distillation liquid stream is heated, a portion of it is vaporized to form stripping vapors that rise upward as the remaining liquid continues flowing downward through said means for providing heat and mass transfer; and wherein said means for providing heat and mass transfer provides continuous contact between said stripping vapors and said remaining liquid so that said means for providing heat and mass transfer also functions to provide mass transfer between vapor and liquid phases, stripping said remaining liquid of methane and lighter components; and wherein said means for providing heat and mass transfer supplies at least a portion of the cooling of step (3) while simultaneously stripping the more volatile components from said distillation liquid stream, and thereafter discharging said heated and stripped remaining liquid from said processing assembly as said relatively less volatile fraction; wherein said means for providing heat and mass transfer does not include external reboilers;(10) a first distillation vapor stream is collected from an upper region of said means for providing heat and mass transfer and cooled sufficiently to condense it, thereby forming a condensed stream;(11) at least a portion of said condensed stream is supplied as a top feed to said first absorbing means;(12) a second distillation vapor stream is collected from an upper region of said first absorbing means and heated, thereafter discharging said heated second distillation vapor stream from said processing assembly as said volatile residue gas fraction;(13) said heating of said second distillation vapor stream is accomplished in one or more means for providing heat exchange that is housed in said processing assembly, said one or more means for providing heat exchange being configured to provide heat exchange between (a) said first distillation vapor stream flowing through one pass of said one or more means for providing heat exchange, and(b) said second distillation vapor stream arising from said first absorbing means inside said processing assembly,so that said first distillation vapor stream is cooled sufficiently to condense it while heating said second distillation vapor stream, thereby forming said condensed stream and said residue gas fraction; and wherein said one or more means for providing heat exchange is further configured to provide heat exchange between(c) said first stream flowing through another pass of said one or more means for providing heat exchange, and(d) said second distillation vapor stream flowing through said another pass of said one or more means for providing heat exchange inside said processing assembly,so that said first stream is cooled to substantial condensation while heating said second distillation vapor stream; and wherein said one or more means for providing heat exchange is further configured to provide heat exchange between(e) said first portion flowing through a further pass of said one or more means for providing heat exchange, and(f) said heated second distillation vapor stream arising from said another pass of said one or more means for providing heat exchange inside said processing assembly,so that said first portion is cooled while further heating said heated second distillation vapor stream to form said volatile residue gas fraction, and wherein said one or more means for providing heat exchange supplies at least a portion of the cooling of steps (2), (6), and (10); wherein said one or more means for providing heat exchange does not include external reflux equipment items; and(14) the quantities and temperatures of said feed streams to said first and second absorbing means are effective to maintain the temperature of said upper region of said first absorbing means at a temperature whereby the major portions of the components in said relatively less volatile fraction are recovered. 17. The process according to claim 2 wherein (a) said first stream is combined with a portion of said at least one liquid stream to form a combined stream;(b) said combined stream is cooled to condense substantially all of it and is thereafter expanded to lower pressure whereby it is further cooled;(c) said expanded cooled combined stream is supplied as said feed between said first and second absorbing means;(d) a remaining portion of said at least one liquid stream is expanded to said lower pressure and is supplied as said feed to said processing assembly below said second absorbing means and above said means for providing heat and mass transfer; and(e) said heating of said second distillation vapor stream and said combined vapor stream is accomplished in said one or more means for providing heat exchange housed in said processing assembly, thereby to supply at least a portion of the cooling of steps (2), (10), and (b). 18. The apparatus according to claim 10 wherein (a) a third combining means is connected to said second dividing means and said separating means to receive said first stream and a portion of said at least one liquid stream and form a combined stream;(b) said one or more means for providing heat exchange is further connected to said third combining means to receive said combined stream and cool it sufficiently to substantially condense it;(c) said first expansion means is connected to said one or more means for providing heat exchange to receive said substantially condensed combined stream and expand it to lower pressure;(d) said first and second absorbing means are connected to said first expansion means to receive said expanded cooled combined stream as said feed thereto between said first and second absorbing means;(e) said third expansion means is connected to said separating means to receive a remaining portion of said at least one liquid stream and expand it to said lower pressure, said third expansion means being further connected to said processing assembly to supply said expanded remaining portion of said at least one liquid stream as said feed thereto below said second absorbing means and above said heat and mass transfer means; and(f) said one or more means for providing heat exchange being further connected to said second combining means to receive said combined vapor stream and heat it, thereby to supply at least a portion of the cooling of steps (2) and (b). 19. The process according to claim 17 wherein (1) said heat and mass transfer means is arranged in upper and lower regions; and(2) said expanded remaining portion of said at least one liquid stream is supplied to said processing assembly to enter between said upper and lower regions of said means for providing heat and mass transfer. 20. The process according to claim 17 wherein (1) said heat and mass transfer means is arranged in upper and lower regions; and(2) said expanded remaining portion of said at least one liquid stream is supplied to said processing assembly to enter between said upper and lower regions of said means for providing heat and mass transfer. 21. The process according to claim 2, 3, 4, 5, 6, 19, 7, or 20 wherein (1) an additional means for providing heat and mass transfer is included inside said separating means, said additional means for providing heat and mass transfer including one or more passes for an external refrigeration medium;(2) said vapor stream is directed to said additional means for providing heat and mass transfer to be cooled by said external refrigeration medium to form additional condensate; and(3) said additional condensate becomes a part of said at least one liquid stream separated therein. 22. The process according to claim 1, 2, 3, 4, 5, 6, 19, 7, 20 or 10 wherein (1) said condensed stream is divided into at least first and second reflux streams;(2) said first reflux stream is supplied as said top feed to said first absorbing means; and(3) said second reflux stream is supplied as a feed to said processing assembly below said second absorbing means and above said means for providing heat and mass transfer. 23. The process according to claim 21 wherein (1) said condensed stream is divided into at least first and second reflux streams;(2) said first reflux stream is supplied as said top feed to said first absorbing means; and(3) said second reflux stream is supplied as a feed to said processing assembly below said second absorbing means and above said means for providing heat and mass transfer. 24. The process according to claim 1, 2, 3, 4, 5, 6, 19, 7, 20, or 8 wherein said means for providing heat and mass transfer includes one or more passes for an external heating medium to supplement the heating supplied by said second portion for said stripping of said more volatile components from said distillation liquid stream. 25. The process according to claim 21 wherein said means for providing heat and mass transfer includes one or more passes for an external heating medium to supplement the heating supplied by said second portion for said stripping of said more volatile components from said distillation liquid stream. 26. The process according to claim 22 wherein said means for providing heat and mass transfer includes one or more passes for an external heating medium to supplement the heating supplied by said second portion for said stripping of said more volatile components from said distillation liquid stream. 27. The process according to claim 23 wherein said means for providing heat and mass transfer includes one or more passes for an external heating medium to supplement the heating supplied by said second portion for said stripping of said more volatile components from said distillation liquid stream. 28. The apparatus according to claim 18 wherein (1) said means for providing heat and mass transfer is arranged in upper and lower regions, and(2) said processing assembly is connected to said third expansion means to receive said expanded remaining portion of said at least one liquid stream and direct it between said upper and lower regions of said means for providing heat and mass transfer. 29. The apparatus according to claim 18 wherein (1) said means for providing heat and mass transfer is arranged in upper and lower regions; and(2) said processing assembly is connected to said third expansion means to receive said expanded at least a portion of said at least one liquid stream and direct it between said upper and lower regions of said means for providing heat and mass transfer. 30. The apparatus according to claim 18 wherein (1) said means for providing heat and mass transfer is arranged in upper and lower regions, and(2) said processing assembly is connected to said third expansion means to receive said expanded remaining portion of said at least one liquid stream and direct it between said upper and lower regions of said means for providing heat and mass transfer. 31. The apparatus according to claim 10, 11, 12, 13, 14, 28, 29, or 30 wherein (1) an additional means for providing heat and mass transfer is included inside said separating means, said additional means for providing heat and mass transfer including one or more passes for an external refrigeration medium;(2) said vapor stream is directed to said additional means for providing heat and mass transfer to be cooled by said external refrigeration medium to form additional condensate; and(3) said additional condensate becomes a part of said at least one liquid stream separated therein. 32. The apparatus according to claim 9, 10, 11, 12, 13, 14, 28, 29, 30, or 15 wherein (1) a third dividing means is connected to said one or more means for providing heat exchange to receive said condensed stream and divide it into at least first and second reflux streams;(2) said first absorbing means is adapted to be connected to said third dividing means to receive said first reflux stream as said top feed thereto; and(3) said means for providing heat and mass transfer is adapted to be connected to said third dividing means to receive said second reflux stream as a top feed thereto. 33. The apparatus according to claim 31 wherein (1) a third dividing means is connected to said one or more means for providing heat exchange to receive said condensed stream and divide it into at least first and second reflux streams;(2) said first absorbing means is adapted to be connected to said third dividing means to receive said first reflux stream as said top feed thereto; and(3) said means for providing heat and mass transfer is adapted to be connected to said third dividing means to receive said second reflux stream as a top feed thereto. 34. The apparatus according to claim 9, 10, 11, 12, 13, 14, 28, 29, 30, or 15 wherein said means for providing heat and mass transfer includes one or more passes for an external heating medium to supplement the heating supplied by said second portion for said stripping of said more volatile components from said distillation liquid stream. 35. The apparatus according to claim 31 wherein said means for providing heat and mass transfer includes one or more passes for an external heating medium to supplement the heating supplied by said second portion for said stripping of said more volatile components from said distillation liquid stream. 36. The apparatus according to claim 32 wherein said means for providing heat and mass transfer includes one or more passes for an external heating medium to supplement the heating supplied by said second portion for said stripping of said more volatile components from said distillation liquid stream. 37. The apparatus according to claim 33 wherein said means for providing heat and mass transfer includes one or more passes for an external heating medium to supplement the heating supplied by said second portion for said stripping of said more volatile components from said distillation liquid stream.
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