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    4.
    发明专利
    未知

    公开(公告)号：BR8008502A

    公开(公告)日：1981-07-21

    申请号：BR8008502

    申请日：1980-12-23

    Applicant: TEXACO DEVELOPMENT CORP

    Inventor： MARION C ,  REYNOLDS B ,  RICHTER G ,  CROUCH W ,  CHILD E ,  BRENT A

    IPC: C01B3/36 ,  C10J3/48 ,  F23D17/00 ,  C01B3/14 ,  C07C1/02 ,  C10J1/00 ,  B05B15/00

    Abstract: A burner for producing synthesis gas, fuel gas or reducing gas from slurries of solid carbonaceous fuel and/or liquid or gaseous hydrocarbon fuel. The burner has a high turndown feature and comprises a central conduit; a central bunch of parallel tubes that extend longitudinally through said central conduit; an outer conduit coaxial with said central conduit and forming an annular passage therewith; and an annular bunch of parallel tubes that extend longitudinally through said annular passage; and wherein the downstream ends of said central and annular bunches of parallel 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 orifice and the minimum width of the annular exit orifice. Three ranges of flow through the burner may be obtained by using one or both bunches of tubes and their surrounding conduits. Throughput levels may be rapidly changed-up and down-without sacrificing stable operation. Additional mixing of the reactant streams is obtained in one embodiment by providing one or more coaxial cylindrical shaped pre-mix chambers in series in the central conduit and/or one or more annular shaped pre-mix chambers in series in the annular passage.

    METHANE-RICH GAS PROCESS
    5.
    发明专利
    METHANE-RICH GAS PROCESS 未知

    公开(公告)号：ZA747701B

    公开(公告)日：1976-04-28

    申请号：ZA747701

    申请日：1974-12-03

    Applicant: TEXACO DEVELOPMENT CORP

    Inventor： CHILD E ,  ROBIN A

    IPC: C07B61/00 ,  B01J21/00 ,  B01J23/00 ,  C01B3/22 ,  C01B3/36 ,  C07C1/00 ,  C07C1/02 ,  C07C1/04 ,  C07C9/04 ,  C07C67/00 ,  C10G9/38 ,  C10J3/46 ,  C10G

    Abstract: A methane-rich gas stream is produced by catalytic methanation of synthesis gas feed comprising H2 and CO. When the mole % CO in the synthesis gas feed to the methanator is greater than 10 mole %, and the mole ratio H2/CO is in the range of greater than 1.0 to 3, by adjusting the mole % CO2 in the synthesis gas feed to the methanator to a value in the range of about 0.5 to 20, and the mole ratio H2/CO2 in the range of about 2 to 60 and preferably less than 3.9 it was unexpectedly found that a product gas is produced having a gross heating value which is greater than that which is obtained from a dry CO2-free methanator feed gas.

    PRODUCTION OF METHANE-RICH GAS STREAM
    6.
    发明专利
    PRODUCTION OF METHANE-RICH GAS STREAM 未知

    公开(公告)号：ZA747698B

    公开(公告)日：1976-04-28

    申请号：ZA747698

    申请日：1974-12-03

    Applicant: TEXACO DEVELOPMENT CORP

    Inventor： RICHTER G ,  ROBIN A ,  SLATER W ,  CHILD E

    IPC: B01J21/00 ,  B01J23/00 ,  C07B61/00 ,  C01B3/22 ,  C01B3/36 ,  C07C1/00 ,  C07C1/02 ,  C07C1/04 ,  C07C9/04 ,  C07C67/00 ,  C10G9/38 ,  C10J3/46 ,  C10G ,  C07C

    Abstract: Improved process for the production of a methane-rich product gas stream comprising the following steps: partial oxidation of a hydrocarbonaceous fuel feed employing a H2O/fuel weight ratio of 2.2 to 2.9 and an atomic ratio of oxygen in the substantially pure oxygen to carbon in the fuel of 0.80 to 0.84 to produce a process gas stream comprising principally H2, CO and CH4 in which the mole ratio H2/CO is 1 to 2.5, the mole % CH4 is 15 or more, and the particulate carbon is 13 weight % (basis carbon in the fuel) or less; cooling the process gas stream and separating H2O, CO2, carbon, and gaseous impurities; reacting together the H2 and CO in said process gas stream in a catalytic methanation zone to produce a methane-rich gas stream principally comprising CH4 and containing gaseous members selected from the group consisting of H2, CO, H2O, CO2, and mixtures thereof; and removing said H2O and CO2 to produce a methane-rich product gas stream comprising about 93 mole percent of CH 4. By means of the subject invention there is produced a high heating value clean fuel gas or a substitute natural gas of about 960 BTU per SCF or more.

    PRODUCTION OF METHANE
    7.
    发明专利
    PRODUCTION OF METHANE 未知

    公开(公告)号：ZA747697B

    公开(公告)日：1976-04-28

    申请号：ZA747697

    申请日：1974-12-03

    Applicant: TEXACO DEVELOPMENT CORP

    Inventor： RICHTER G ,  ROBIN A ,  SLATER W ,  CHILD E

    IPC: C07B61/00 ,  B01J21/00 ,  B01J23/00 ,  C01B3/22 ,  C01B3/36 ,  C07C1/00 ,  C07C1/04 ,  C07C4/04 ,  C07C9/04 ,  C07C67/00 ,  C10G9/38 ,  C10J3/46 ,  C10G ,  C07C

    Abstract: Improved process for the production of substantially pure methane or clean synthetic natural gas (SNG) including the steps of partial oxidation of a hydrocarbonaceous fuel feed with substantially pure oxygen to produce a process gas stream comprising principally H2, and CO and having a critical mole ratio H2/CO in the range of 1.0 to below 1.5 and preferably 1.0 to 1.3; cooling the process gas stream and separating H2O, CO2 particulate carbon and gaseous impurities therefrom, reacting together the H2 and CO in said process gas stream in a catalytic methanation zone to produce a methane-rich gas stream containing gaseous impurities selected from the group consisting primarily of H2O, and CO2, along with minor amounts of H2, CO, N2, and Ar and mixtures thereof; and removing said H2O and CO2 to produce a product gas stream comprising substantially pure methane i.e. 95 mole % or higher (dry basis). The product gas may be used as a clean substitute natural gas having a gross heating value of about 980 BTU/SCF or higher.

    PRODUCTION OF CLEANED AND COOLED SYNTHESIS GAS
    9.
    发明专利
    PRODUCTION OF CLEANED AND COOLED SYNTHESIS GAS 未知

    公开(公告)号：ZA802741B

    公开(公告)日：1981-09-30

    申请号：ZA802741

    申请日：1980-05-07

    Applicant: TEXACO DEVELOPMENT CORP

    Inventor： CHILD E ,  MUENGER J ,  BRENT A

    IPC: B01D45/08 ,  B01D45/12 ,  C10J3/46 ,  C10J3/86 ,  C10K1/02 ,  C10J ,  C10K

    Abstract: The hot raw synthesis gas stream leaving the reaction zone of a free flow partial oxidation gas generator at a temperature in the range of about 1800 DEG to 3000 DEG F. is passed through a first gas diversion and residue separation zone where the velocity of the gas stream is reduced and its direction is diverted into a side transfer line. Solid material and molten slag separate by gravity from the gas stream. The hot gas stream is then introduced into a second gas diversion and residue separation zone where additional residue is separated. About 0.5 to 20 vol. % of the hot gas stream may be passed through bottom outlets in said first and second gas diversion zones in order to prevent bridging. The hot gas stream from the second gas diversion zone is passed upwardly through a radiant cooler where additional solid matter is removed by gravity and the gas temperature is reduced to a temperature in the range of about 900 DEG to 1800 DEG F. In one embodiment, the second diversion and residue separation zone is a thermally insulated cyclone. By the subject process, 70 to 95 wt. % of the combustion residue is removed from the raw stream of synthesis gas, and the temperature of the gas stream is reduced below the maximum safe operating temperature for downstream devices used to recover energy from the hot gas stream, such as a conventional convection type gas cooler.

    10.
    发明专利
    未知

    公开(公告)号：BR8003379A

    公开(公告)日：1980-12-30

    申请号：BR8003379

    申请日：1980-05-29

    Applicant: TEXACO DEVELOPMENT CORP

    Inventor： CHILD E ,  MUENGER J ,  BRENT A

    IPC: B01D45/08 ,  B01D45/12 ,  C10J3/46 ,  C10J3/86 ,  C10K1/02

    Abstract: The hot raw synthesis gas stream leaving the reaction zone of a free flow partial oxidation gas generator at a temperature in the range of about 1800 DEG to 3000 DEG F. is passed through a first gas diversion and residue separation zone where the velocity of the gas stream is reduced and its direction is diverted into a side transfer line. Solid material and molten slag separate by gravity from the gas stream. The hot gas stream is then introduced into a second gas diversion and residue separation zone where additional residue is separated. About 0.5 to 20 vol. % of the hot gas stream may be passed through bottom outlets in said first and second gas diversion zones in order to prevent bridging. The hot gas stream from the second gas diversion zone is passed upwardly through a radiant cooler where additional solid matter is removed by gravity and the gas temperature is reduced to a temperature in the range of about 900 DEG to 1800 DEG F. In one embodiment, the second diversion and residue separation zone is a thermally insulated cyclone. By the subject process, 70 to 95 wt. % of the combustion residue is removed from the raw stream of synthesis gas, and the temperature of the gas stream is reduced below the maximum safe operating temperature for downstream devices used to recover energy from the hot gas stream, such as a conventional convection type gas cooler.

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