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Partial oxidation process with production of power

  • US 4,121,912 A
  • Filed: 05/02/1977
  • Issued: 10/24/1978
  • Est. Priority Date: 05/02/1977
  • Status: Expired due to Term
First Claim
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1. A process for the production of a product gas stream comprising H2 and CO along with power comprising;

  • (1) producing a raw gas stream comprising H2, CO, CO2, H2 O, and at least one member of the group H2 S, COS, CH4, N2, and A, and containing entrained particulate carbon and other solids in the reaction zone of a free-flow gas generator by the partial oxidation of a hydrocarbonaceous fuel with a free-oxygen containing gas and with or without a temperature moderator, at a temperature in the range of about 1800°

    to 3000°

    F. and a pressure in the range of about 10 to 200 atmospheres;

    (2) removing a portion of the entrained solids from the raw gas stream from (1), and in a mixing zone mixing all of said raw gas stream with a cooled, cleaned and compressed recycle gas stream from (6);

    wherein the volume ratio of said recycle gas stream to the total gas mixture leaving said mixing zone is in the range of about 0.2 to 0.8;

    (3) expanding the mixture of gas streams from (2) in a power recovery expansion turbine means at an inlet temperature in the range of about 1000°

    to 2400°

    F., and above the dew point and at an inlet pressure in the range of about 10 to 200 atm. abs.;

    (4) removing a stream of gas from said turbine means in (3) at a pressure in the range of about 2 to 15 atm. abs. and a temperature in the range of about 350°

    to 1000°

    F., and cooling said gas stream;

    (5) cleaning any remaining entrained particulate solids from the cooled gas stream from (4), and condensing and removing water;

    (6) compressing the gas stream from (5) to a pressure greater than the pressure in said gas generator in a gas compression zone comprising at least one gas compressor operated from power produced by said expansion turbine, and passing a portion of the compressed gas stream into said mixing zone in (2) as said recycle gas stream; and

    (7) removing the remainder of said compressed gas stream from said compression zone in (6) as said product gas stream.

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