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US 8,945,424 B2Granted
Low temperature sulfur tolerant tar and sulfur removal with concomitant synthesis gas conditioning
AssigneeLummus Technology Inc.
InventorsSourabh S. Pansare, Joe D. Allison, Steven E. Lusk, Albert C. Tsang
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Abstract
A catalyst comprising of NiO; Al2O3; and ZnO. The catalyst is capable of greater than 5% sulfur removal from a synthesis gas at a temperature range from 300° C. to 600° C.
Claims11
A process of removing tar compounds from synthesis gas, the process comprising:
- producing a tar-containing synthesis gas;
- producing a treated synthesis gas by contacting the tar-containing synthesis gas with a first catalyst comprising:
- (a) NiO;
- (b) Al2O3;
- and
- (c) ZnO,
- introducing the treated synthesis gas to a further catalytic chemical reaction;
- wherein the synthesis gas is not heated prior to contact with the first catalyst and the treated synthesis gas is not cooled prior to undergoing the further catalytic chemical reaction.
5 more elements
A process of:
- producing a raw synthesis gas containing tar compounds and sulfur containing compounds by gasification;
- producing a treated synthesis gas by contacting the raw synthesis gas with a first catalyst comprising:
- (a) NiO present from 1 to 10 wt %;
- (b) Al2O3;
- and
- (c) ZnO,
- wherein the catalyst is capable of greater than 20% sulfur removal from a synthesis gas while simultaneously removing 20% to 60% of the tar from the raw synthesis gas at a temperature range from 350° C. to 550° C. and a pressure range from 14.7 to 1,200 psig;
- and
- introducing the treated synthesis gas to a subsequent catalytic chemical reaction;
- wherein the synthesis gas is not heated prior to contact with the first catalyst and the treated synthesis gas is not cooled prior to undergoing the subsequent catalytic chemical reaction.
7 more elements
Dependencies are inferred from the claim text.