Marion Charles P. (Mamaroneck NY) Crouch William B. (Chappaqua NY) Brent Albert (Huntington NY) Richter George N. (San Marino CA) Child Edward T. (Tarrytown NY) Reynolds Blake (Riverside CT)
출원인 / 주소
Texaco, Inc. (White Plains NY 02)
인용정보
피인용 횟수 :
24인용 특허 :
4
초록▼
A partial oxidation process for continuously producing synthesis gas, fuel gas or reducing gas in which process one fuel is replaced by a differing fuel without shutting down or depressurizing the gas generator. This multifuel process is not tied to one particular fuel and reacts slurries of solid c
A partial oxidation process for continuously producing synthesis gas, fuel gas or reducing gas in which process one fuel is replaced by a differing fuel without shutting down or depressurizing the gas generator. This multifuel process is not tied to one particular fuel and reacts slurries of solid carbonaceous fuel and/or liquid or gaseous hydrocarbonaceous fuels. Problems of fuel availability are reduced due to the wide selection of fuels that are suitable for the subject process. A two-section burner having a high turndown feature is employed that comprises a central conduit; a central bunch of tubes positioned in said central conduit; an outer conduit coaxial with said central conduit and forming an annular passage therewith; and an annular bunch of tubes positioned in said annular passage. The downstream ends of said central and/or annular bunches of tubes are respectively retracted upstream from the burner face a distance of about 0 to 12 i.e. 3 to 10 times the minimum diameter of the central exit orifie and the minimum width of the annular exit orifice. A control system is provided for switching the type of reactant fuel streams flowing through either one or both sections of the burner. The flow rates of the oxidant, fuel, and temperature moderator streams may also be varied in either one or both sections of the burner, thereby effecting a rapid turndown or turnup of the burner and a change in the production of the effluent gas.
대표청구항▼
In a process for producing gaseous mixtures comprising H2, CO, CO2, entrained particulate carbon, and at least one material from the group consisting of H2O, N2, H2S, COS, CH4, Ar, and ash in a free-flow noncatalytic partial oxidation gas generator, the improvement employing a burner having a centra
In a process for producing gaseous mixtures comprising H2, CO, CO2, entrained particulate carbon, and at least one material from the group consisting of H2O, N2, H2S, COS, CH4, Ar, and ash in a free-flow noncatalytic partial oxidation gas generator, the improvement employing a burner having a central section with separate first and second fluid passage means and an annular section with separate third and fourth fluid passage means, and changing from one reactant feedstream to another without shutting down or depressurizing the system comprising the steps of: (1) passing a first reactant stream of first solid carbonaceous fuel slurry or hydrocarbonaceous fuel with or without mixture with H2O through either the first or second fluid passage means in the central section of said burner, and/or simultaneously passing a second reactant stream of said first solid carbonaceous fuel slurry or hydrocarbonaceous fuel with or without mixture with H2O through either the third or fourth fluid passage means in the annular section of said burner; wherein the central section of the burner includes a central conduit, said central conduit being closed at the upstream end and having an unobstructed downstream circular exit orifice at the tip of the burner; said annular section being bounded by an outer conduit coaxial and concentric with said central conduit along its length and in spaced relationship therewith and forming an annular passage therebetween, said annular passage being closed at the upstream end and having an unobstructed downstream annular exit orifice at the tip of the burner and wherein the central longitudinal axis of the annular passage is parallel to the central longitudinal axis of the burner throughout its length; said first passage means comprises a central bunch of tubes passing through the closed end of said central conduit and making a gastight seal therewith, and wherein the downstream ends of said central bunch of tubes are retracted upstream from the burner face a distance of about 0 to 12 times the minimum diameter of the central conduit exit orifice at the tip of the burner; said second passage means comprising the space between the inside wall of said central conduit and the outside surfaces of the central bunch of tubes; said third passage means comprising an annular bunch of tubes passing through the closed end of said annular passage and making a gastight seal therewith, and wherein the downstream ends of said annular bunch of tubes are retracted upstream from the burner face a distance of about 0 to 12 times the minimum width of the annular exit orifice at the tip of the burner; and said fourth passage means comprising the space between the inside wall of the outer conduit and the outside surfaces of the annular bunch of tubes; (2) simultaneously passing a separate reactant stream of free-oxygen containing gas with or without mixture with a temperature moderating gas through the unused fluid passage means in each of the central and/or annular sections of said burner which are related to said fluid passage means through which said stream(s) of first solid carbonaceous fuel slurry or hydrocarbonaceous fuel with or without mixture with H2O are passing; (3) mixing together said reactant streams from (1) and (2) to produce a well-distributed blend, and reacting said mixture by partial oxidation in the reaction zone of said gas generator at an autogenous temperature in the range of about 1700°to 3500°F., a pressure in the range of about 1 to 300 atmospheres, an atomic ratio of oxygen/carbon in the range of about 0.5 to 1.7, and a weight ratio H2O/fuel in the range of about 0 to 5.0; (4) replacing in said central and/or annular section(s) one or more of said reactant stream(s) of first solid carbonaceous fuel slurry or hydrocarbonaceous fuel with or without mixture with H2O with a replacement stream of a second carbonaceous fuel slurry or hydrocarbonaceous fuel with or without mixture with H2O; and simultaneously with (4) or after completion of (4); (5) controlling the temperature and weight ratio H2O/fuel in the reaction zone at design conditions by adjusting the flow rate(s) of the reactant stream(s) of free-oxygen containing gas with or without mixture with a temperature moderating gas passing through the burner, and if necessary introducing supplemental H2O into the reaction zone.
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이 특허에 인용된 특허 (4)
Hanson Robert C. (Excelsior MN), Control system and apparatus for producing compatible mixtures of fuel gases.
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Hershkowitz Frank ; Deckman Harry W. ; Reynolds Robert P. ; Gonatas Constantine P. ; Fulton John W. ; Schoenman Leonard ; Ito Jack I., Distributed injection process and apparatus for producing synthesis gas.
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Pawlak, Nathan A.; Carr, Robert W.; Grunch, Roger J, Tandem reactor system having an injectively-mixed backmixing reaction chamber, tubular-reactor, and axially movable interface.
Pawlak, Nathan A.; Carr, Robert W.; Grunch, Roger J., Tandem reactor system having an injectively-mixed backmixing reaction chamber, tubular-reactor, and axially movable interface.
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