초록 ▼

The particulate carbon in a liquid organic extractant-carbon-water dispersion stream that is produced in a decanter is separated as clean, dry carbon particles from the liquid carrier by atomizing the dispersion and vaporizing the liquid organic extractant and water in a spray dryer. Thermal energy

The particulate carbon in a liquid organic extractant-carbon-water dispersion stream that is produced in a decanter is separated as clean, dry carbon particles from the liquid carrier by atomizing the dispersion and vaporizing the liquid organic extractant and water in a spray dryer. Thermal energy for completely vaporizing the liquid carrier is provided by directly contacting the atomized dispersion in the spray dryer with a split stream of hot raw synthesis gas containing entrained particulate carbon from a partial oxidation gas generator. The continuous closed-cycle operation permits recovery and recycle of the water used for cooling and cleaning the stream of raw synthesis gas as well as the recovery and reuse of the liquid organic extractant. Clean dewatered and clean saturated streams of synthesis gas are simultaneously produced along with the by-product clean, dry carbon particles.

대표청구항 ▼

In a process for the partial oxidation of a hydrocarbonaceous feedstock with a free oxygen-containing gas in the reaction zone of a free-flow noncatalytic partial oxidation gas generator at a temperature in the range of about 1700°F. to 3500°F. and a pressure in the range of about 5 to 300 atmospher

In a process for the partial oxidation of a hydrocarbonaceous feedstock with a free oxygen-containing gas in the reaction zone of a free-flow noncatalytic partial oxidation gas generator at a temperature in the range of about 1700°F. to 3500°F. and a pressure in the range of about 5 to 300 atmospheres in the presence of a temperature moderator to produce a hot raw effluent gas stream comprising H2, CO, CO2, entrained particulate carbon and at least one material from the group H2O, N2, Ar, H2S, COS, CH4, and ash; and cooling and cleaning the process gas stream; the improved method for simultaneously producing a clean dewatered gas stream and a clean gas stream saturated with H2O, and for recovering the particulate carbon from said effluent gas stream comprising; (1) splitting all of the hot raw effluent gas stream leaving the reaction zone into first and second hot raw gas streams wherein the first hot raw gas stream comprises in the range of about 5 to 50 volume percent of all of the effluent gas stream and the second hot raw gas stream comprises the remainder; (2) cooling and cleaning the second hot raw gas stream from (1) by direct contact with water thereby removing the solid particles entrained therein, and producing a carbon-water dispersion; (3) mixing the carbon-water dispersion from (2) with a liquid organic extractant, and separating in a decanting zone a stream of liquid organic extractant-carbon-water dispersion at a temperature in the range of about 180°F. to 650°F. and a pressure in the range of about 5 to 300 atmospheres, and a stream of clarified water; (4) scrubbing the gas stream from (2) with water comprising at least a portion of the clarified water from (3) to produce a clean gas stream saturated with H2O; (5) spraying and atomizing the liquid organic extractant-carbon-water dispersion from (3) in a spray drying zone to produce droplets; directly contacting said droplets in the spray drying zone with all of the first hot raw gas stream from (1); vaporizing in said spray drying zone substantially all of the liquid organic extractant and water in said dispersion to produce a gaseous stream comprising said first raw gas stream, vaporized liquid organic extractant, H2O, and entrained particulate solids; separating clean, dry particulate solids from said gaseous stream in the spray drying zone; and separately removing the gaseous stream and particulate solids from the spray drying zone; and (6) cooling the aqueous stream leaving the spray drying zone in (5) to a temperature below the dew point of said H2O and said liquid organic extractant, whichever is lower, and in a separating zone separating from each other water, liquid organic extractant, and a clean dewatered gas stream.