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Gasification of solid carbonaceous fuels - slurried in liquid carbon dioxide, by continuous partial oxidation
Gasification of solid carbonaceous fuels - slurried in liquid carbon dioxide, by continuous partial oxidation
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机译:固体碳质燃料的气化-通过连续部分氧化在液态二氧化碳中制浆
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摘要
Synthesis or fuel gas mixts. (constituents CO, CO2, H2, H2O, CH4, H2S, COS, N2, A) are produced by (a) mixing liquid CO2 and a solid particulate carbonaceous fuel at between -69 and +80 degrees F and at a pressure between above the triple point pressure of the CO2 and 1000 psig to produce an H2O-free slurry, (b) introducing the slurry at between-69 and + 1200 degrees F and at 76-4500 psia simultaneously with an O2-contg. (21 mole % O2) gas at 80-500 degrees F and 76-4500 psia into a free-flow noncatalytic gas generator and (c) carrying out partial oxidation of the mixt. at an autogenous temp. of 1200-3000 degrees F and 30-4400 psia. The liquid CO2 serves both as slurrying agent and temp. moderator. The process utilises low cost high-sulphur solid fuel feeds, reduces heat load and consequently oxygen requirements of the gas generator, eliminates heat exchanger fouling, avoids excessive duty and temp. degradation of recoverable heat when using a waste heat boiler, and reduces single-pass carbon waste.
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