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US 8,617,512 B2Granted
Water gas shift process
AssigneeStichting Energieonderzoek Centrum Nederland
InventorsPaul Dean Cobden, Stéphane Walspurger, Rudolf Willem Van Den Brink, Hendricus Adrianus Johannes Van Dijk
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Abstract
The invention provides a water gas shift process comprising a reaction stage. The reaction stage comprises (a) providing a gas mixture comprising CO, H2O and an acid gas component to a reactor containing an adsorbent, and (b) subjecting the gas mixture to water gas shift reaction conditions to perform the water gas shift reaction. The adsorbent comprises an alkali promoted alumina based material. The acid gas component comprises H2S.
Claims11
A water gas shift process comprising:
- (a) providing a gas mixture comprising CO, H2O and an acid gas component to a reactor comprising an adsorbent,
- wherein the adsorbent comprises a metal oxide comprising alumina, magnesia, and an alkali metal,
- wherein the reactor does not comprises a catalyst, and
- where the acid gas component comprises at least 200 ppm H2S relative to the gas mixture, and
- (b) subjecting the gas mixture to water gas shift reaction conditions to perform the water gas shift reaction.
2 more elements
A water gas shift process comprising:
- (a) providing a gas mixture comprising CO, H2O and an acid gas component to a reactor comprising an adsorbent and optional catalyst,
- where the adsorbent comprises a metal oxide comprising alumina, magnesia, and an alkali metal,
- wherein the weight ratio of adsorbent to any catalyst is greater than 10, and
- wherein the acid gas component comprises at least 200 ppm H2S relative to the gas mixture, and
- (b) subjecting the gas mixture to water gas shift reaction conditions to perform the water gas shift reaction,
- wherein the adsorbent is derived from an alkali promoted hydrotalcite having the chemical formula:
- [MII(1-x)Al(αx)MIII((1-α)x)(OH)2][Cn-](x/n).yH2O.zMI(m)Am-
- wherein
- MI is one or more selected from the group consisting of Li, Na, K, Rb and Cs;
- MII comprises Mg and, optionally, further comprises one or more of Mn, Cu, Co, Fe, Cd and Cr;
- Al is aluminium;
- MIII is optionally one or more of the group consisting of Fe, Cr and Mn;
- Cn- is one or more anions selected from the group consisting of NO3−, SO42−, CO32−, CH3CO2−, Cl−, Br−, F− and I−;
- Am- is one or more anions,
- n=1 or 2;
- x=0.01-0.99;
- y=0-4;
- z=0.001-7;
- and α=0.5-1.
16 more elements
Dependencies are inferred from the claim text.