Process for gasifying solid carbon containing materials

Claim 1

The method which comprises gasifying a solid carbon-containing charge in the presence of water and an oxygen-containing gas thereby forming a hot synthesis gas containing carbon monoxide and hydrogen at 1100° C.-1600° C.; cooling by radiation said hot synthesis gas containing carbon monoxide and hydrogen to 500° C.-800° C. thereby forming a cooled synthesis gas; removing at least a portion of the ash components from said cooled synthesis gas thereby forming a partially deashed cooled synthesis gas; convectively cooling said partially deashed cooled synthesis gas in a transfer line convection cooler from initial temperature of 500° C.-800° C. to a final temperature of 400° C.-700° C. thereby forming a further cooled synthesis gas; convectively cooling a first, carbon monoxide-production portion of said further cooled synthesis gas to 150° C.-400° C. thereby forming a convectively cooled first portion; scrubbing said convectively cooled first portion thereby forming a scrubbed first portion of said synthesis gas in amount desired for carbon monoxide production; contacting a second portion of said cooled synthesis gas with aqueous coolant in a synthesis gas scrubbing and quench operation wherein, as said gas is cooled from 400° C.-700° C. down to 150° C.-250° C., it volatilizes therein water in predetermined desired amount for shift conversion thereby forming a shift conversion charge gas; preheating said shift conversion charge gas to 175° C.-250° C.; passing said preheated shift conversion charge gas to a shift conversion operation wherein at 250° C.-550° C. and 300-1200 psig water reacts with carbon monoxide forming carbon dioxide and hydrogen to yield a product synthesis gas; and withdrawing said product synthesis gas.

Claim 2

The method which comprises gasifying a solid carbon-containing charge in the presence of water and an oxygen-containing gas thereby forming a hot synthesis gas containing carbon monoxide and hydrogen at 1100° C.-1600° C.; cooling by radiation said hot synthesis gas containing carbon monoxide and hydrogen to 500° C.-800° C. thereby forming a cooled synthesis gas; removing at least a portion of the ash components from said cooled synthesis gas thereby forming a partially deashed cooled synthesis gas; convectively cooling said partially deashed cooled synthesis gas in a transfer line convection cooler from initial temperature of 500° C.-800° C. to a final temperature of 400° C.-700° C. thereby forming a further cooled synthesis gas; convectively cooling a first, carbon monoxide-production portion of said further cooled synthesis gas to 150° C.-400° C. thereby forming a convectively cooled first portion; scrubbing said convectively cooled first portion thereby forming a scrubbed first portion of said synthesis gas in amount desired for carbon monoxide production; contacting a second portion of said cooled synthesis gas with aqueous coolant in a synthesis gas scrubbing and quench operation wherein, as said gas is cooled from 400° C.-700° C. down to 150° C.-250° C., it volatilizes therein water in predetermined desired amount for shift conversion thereby forming a shift conversion charge gas; preheating said shift conversion charge gas to 175° C.-250° C.; passing said preheated shift conversion charge gas to a shift conversion operation wherein at 250° C.-550° C. and 300-1200 psig water reacts with carbon monoxide forming carbon dioxide and hydrogen to yield a product synthesis gas; and withdrawing said product synthesis gas.

Claim 18

The method which comprises gasifying a slurried bituminous charge, of particle size such that 100% passes through a 14-mesh sieve, in the presence of water and oxygen thereby forming a hot synthesis gas containing carbon monoxide and hydrogen at 1100° C.-1600° C.; cooling by radiation said hot synthesis gas containing carbon monoxide and hydrogen to 500° C.-800° C. thereby forming a cooled synthesis gas; passing said cooled synthesis gas downwardly out of said radiant cooling operation thereby directing ash in a downwardly directed stream by velocity and gravity head toward an ash collecting zone and forming a partially deashed cooled synthesis gas; withdrawing said partially deashed cooled synthesis gas laterally of said downwardly directed stream; convectively cooling said partially deashed cooled synthesis gas in a transfer line convection cooler from initial temperature of 500° C.-800° C. to a final temperature of 400° C.-700° C. thereby forming a further cooled synthesis gas; convectively cooling a first, carbon monoxide-production portion of said further cooled synthesis gas to 150° C.-400° C. thereby forming a convectively cooled first portion; scrubbing said convectively cooled first portion thereby forming a scrubbed first portion of said synthesis gas in amount desired for carbon monoxide production; contacting a second portion of said cooled synthesis gas with aqueous coolant in a synthesis gas scrubbing and quench operation wherein, as said gas is cooled from 400° C.-700° C. down to 150° C.-250° C., it volatilizes thereinto water in predetermined desired amount for shift conversion thereby forming a shift conversion charge gas; preheating said shift conversion charge gas to 175° C.-250° C.; passing said shift conversion charge gas to a shift conversion operation wherein at 250° C.-550° C. and 300-1200 psig, in the presence of a catalyst, water reacts with carbon dioxide forming carbon monoxide and hydrogen to yield a product synthesis gas; and withdrawing said product synthesis gas.

Claim 19

The method which comprises gasifying a slurried bituminous charge, of particle size such that 100% passes through a 14-mesh sieve, in the presence of water and oxygen thereby forming a hot synthesis gas containing carbon monoxide and hydrogen at 1100° C.-1600° C.; cooling by radiation said hot synthesis gas containing carbon monoxide and hydrogen to 500° C.-800° C. thereby forming a cooled synthesis gas; passing said cooled synthesis gas downwardly out of said radiant cooling operation thereby directing ash in a downwardly directed stream by velocity and gravity head toward an ash collecting zone and forming a partially deashed cooled synthesis gas; withdrawing said partially deashed cooled synthesis gas laterally of said downwardly directed stream; convectively cooling said partially deashed cooled synthesis gas in a transfer line convection cooler from initial temperature of 500° C.-800° C. to a final temperature of 400° C.-700° C. thereby forming a further cooled synthesis gas; convectively cooling a first, carbon monoxide-production portion of said further cooled synthesis gas to 150° C.-400° C. thereby forming a convectively cooled first portion; scrubbing said convectively cooled first portion thereby forming a scrubbed first portion of said synthesis gas in amount desired for carbon monoxide production; contacting a second portion of said cooled synthesis gas with aqueous coolant in a synthesis gas scrubbing and quench operation wherein, as said gas is cooled from 400° C.-700° C. down to 150° C.-250° C., it volatilizes thereinto water in predetermined desired amount for shift conversion thereby forming a shift conversion charge gas; preheating said shift conversion charge gas to 175° C.-250° C.; passing said shift conversion charge gas to a shift conversion operation wherein at 250° C.-550° C. and 300-1200 psig, in the presence of a catalyst, water reacts with carbon dioxide forming carbon monoxide and hydrogen to yield a product synthesis gas; and withdrawing said product synthesis gas.