초록 ▼

A carbon monoxide-rich gas of a carbon monoxide concentration of at least 98% by volume is produced by [A]GENERATING A HYDROGEN AND CARBON MONOXIDE-CONTAINING CRUDE GAS BY GASIFICATION OF A FINELY DIVIDED SOLID FUEL, INCLUDING DUST-LIKE FUEL, WITH OXYGEN OR OXYGEN-ENRICHED AIR AND STEAM; [B]DESULFUR

A carbon monoxide-rich gas of a carbon monoxide concentration of at least 98% by volume is produced by [A]GENERATING A HYDROGEN AND CARBON MONOXIDE-CONTAINING CRUDE GAS BY GASIFICATION OF A FINELY DIVIDED SOLID FUEL, INCLUDING DUST-LIKE FUEL, WITH OXYGEN OR OXYGEN-ENRICHED AIR AND STEAM; [B]DESULFURIZING THE CRUDE GAS; [C]REMOVING ANY CARBON DIOXIDE PRESENT IN THE CRUDE GAS BY A SELECTIVE WASH; [D]SUBJECTING THE THUS-TREATED CRUDE GAS TO A LOW TEMPERATURE DECOMPOSITION INTO A CARBON MONOXIDE FRACTION, A HYDROGEN FRACTION AND A FRACTION CONSTITUTED BY THE RESIDUAL GASES; [E]CARRYING OUT AN ENDOTHERMAL CATALYTIC CONVERSION OF THE HYDROGEN FRACTION BY REACTION WITH THE CARBON DIOXIDE REMOVED IN STEP [C]FROM THE CRUDE GAS, THE CARBON MONOXIDE-RICH GAS OCCURRING IN SAID CONVERSION REACTION, AFTER ELIMINATION OF THE CONDENSATE, BEING RECYCLED INTO THE CRUDE GAS AT A PLACE PRECEDING SAID CARBON DIOXIDE REMOVAL (STEP [C]), WHILE [F]RECOVERING THE FORMED CARBON MONOXIDE-RICH GAS FRACTION FOR FURTHER USE AND DISCHARGING THE RESIDUAL GAS FRACTION INTO THE ATMOSPHERE. The process permits to use solid fuels instead of the gaseous or liquid hydrocarbons usually used in prior art processes.

대표청구항 ▼

A process for producing a carbon monoxide-rich gas of which the carbon monoxide contents is at least 98% by volume, the said process comprising the following steps: [a]generating a crude gas which contains hydrogen, carbon monoxide, and sulfur and which may also contain carbon dioxide by gasificatio

A process for producing a carbon monoxide-rich gas of which the carbon monoxide contents is at least 98% by volume, the said process comprising the following steps: [a]generating a crude gas which contains hydrogen, carbon monoxide, and sulfur and which may also contain carbon dioxide by gasification of a finely divided solid fuel into oxygen or oxygen-enriched air and steam; [b]desulfurizing the crude gas; [c]removing any carbon dioxide present in the crude gas by a selective wash; [d]subjecting the thus-treated crude gas to a low temperature separation into a carbon monoxide fraction, a hydrogen fraction and a fraction constituted by the residual gases; [e]carrying out an endothermal catalytic conversion of the hydrogen fraction by reaction with the carbon dioxide removed in step [c]from the crude gas, the carbon monoxide-rich gas occurring in said conversion reaction, after elimination of the condensate, being recycled into the crude gas prior to said carbon dioxide removel (step [c]), while [f]recovering the formed carbon monoxide-rich gas fraction for further use and discharging the residual gas fraction into the atmosphere.