Method of manufacturing a gas rich in carbon monoxide

Claim 1

THE METHOD OF MANUFACTURING A GAS RICH IN CARBON MONOXIDE FROM SOLID CARBONACEOUS MATERIAL, WHICH COMPRISES CONTACTING POWDERED CARBONACEOUS MATERIAL AT A TEMPERATURE OF FROM ABOUT 1500*-2000* F. IN THE FORM OF A DENSE FLUIDIZED MASS IN A GAS PRODUCING ZONE WITH A FEED GAS CONTAINING CARBON DIOXIDE, STEAM AND FREE OXYGEN FOR A SUFFICIENT PERIOD SUBSTANTIALLY COMPLETELY TO REDUCE CO2 AND STEAM PRESENT IN SAID ZONE BY THE CARBON OF SAID CARBONACEOUS MATERIAL AT SAID TEMPERATURE, MAINTAINING THE FREE OXYGEN CONTENT OF SAID FEED GAS SUFFICIENTLY HIGH TO MAINTAIN SAID TEMPERATURE BY COMBUSTION IN SAID ZONE, WITHDRAWING A PRODUCT GAS RICH IN CARBON MONOXIDE AND SUBSTANTIALLY FREE OF CARBON DIOXIDE AND STEAM FROM SAID ZONE, WITHDRAWING CARBONACEOUS MATERIAL FROM SAID ZONE, CHARGING IT TO A SECOND PHYSICALLY SEPARATED ZONE, MAINTAINING THE CARBONACEOUS MATERIAL IN SAID SECOND ZONE IN THE FORM OF A DENSE FLUIDIZED MASS, PASSING A COMBUSTION-SUPPORTING GAS CONTAINING STEAM AND SUFFICIENT FREE OXYGEN TO PROVIDE THE DESIRED COMPOSITION IN SAID FEED GAS UPWARDLY THROUGH SAID SECOND ZONE, MAINTAINING A TEMPERATURE BETWEEN ABOUT 1500* AND 2500* F. IN THE SECOND ZONE ADEQUATE FOR THE COMBUSTION OF CARBON AND HIGHER THAN SAID FIRST-NAMED TEMPERATURE BUT BELOW THE SINTERING TEMPERATURE OF THE RESULTANT ASH, WITHDRAWING HOT GASES FROM SAID SECOND ZONE AND DISCHARGING THEM INTO SAID FIRST-NAMED ZONE TO SUPPLY SAID FEED GAS TEHRETO, AND WITHDRAWING ASH FROM SAID SECOND ZONE.

Claim 2

THE METHOD OF MANUFACTURING A GAS RICH IN CARBON MONOXIDE FROM SOLID CARBONACEOUS MATERIAL, WHICH COMPRISES CONTACTING POWDERED CARBONACEOUS MATERIAL AT A TEMPERATURE OF FROM ABOUT 1500*-2000* F. IN THE FORM OF A DENSE FLUIDIZED MASS IN A GAS PRODUCING ZONE WITH A FEED GAS CONTAINING CARBON DIOXIDE, STEAM AND FREE OXYGEN FOR A SUFFICIENT PERIOD SUBSTANTIALLY COMPLETELY TO REDUCE CO2 AND STEAM PRESENT IN SAID ZONE BY THE CARBON OF SAID CARBONACEOUS MATERIAL AT SAID TEMPERATURE, MAINTAINING THE FREE OXYGEN CONTENT OF SAID FEED GAS SUFFICIENTLY HIGH TO MAINTAIN SAID TEMPERATURE BY COMBUSTION IN SAID ZONE, WITHDRAWING A PRODUCT GAS RICH IN CARBON MONOXIDE AND SUBSTANTIALLY FREE OF CARBON DIOXIDE AND STEAM FROM SAID ZONE, WITHDRAWING CARBONACEOUS MATERIAL FROM SAID ZONE, CHARGING IT TO A SECOND PHYSICALLY SEPARATED ZONE, MAINTAINING THE CARBONACEOUS MATERIAL IN SAID SECOND ZONE IN THE FORM OF A DENSE FLUIDIZED MASS, PASSING A COMBUSTION-SUPPORTING GAS CONTAINING STEAM AND SUFFICIENT FREE OXYGEN TO PROVIDE THE DESIRED COMPOSITION IN SAID FEED GAS UPWARDLY THROUGH SAID SECOND ZONE, MAINTAINING A TEMPERATURE BETWEEN ABOUT 1500* AND 2500* F. IN THE SECOND ZONE ADEQUATE FOR THE COMBUSTION OF CARBON AND HIGHER THAN SAID FIRST-NAMED TEMPERATURE BUT BELOW THE SINTERING TEMPERATURE OF THE RESULTANT ASH, WITHDRAWING HOT GASES FROM SAID SECOND ZONE AND DISCHARGING THEM INTO SAID FIRST-NAMED ZONE TO SUPPLY SAID FEED GAS TEHRETO, AND WITHDRAWING ASH FROM SAID SECOND ZONE.