Shell Oil Comapny

Rudolf Henri Max Herold

Cornelis Jacobus Smit

Thijme Last

Bernardus Josephus Maria Manshande

Robert Martijn Van Hardeveld

Adriaan Johannes Kodde

Rudolf Robert Gouman

The invention provides a process for removal of HCN and NHfrom synthesis gas, the process comprising the steps of: (a) contacting feed synthesis gas comprising HCN with a HCN hydrolysis sorbent in the presence of water, thereby obtaining synthesis gas comprising NH; (b) contacting the synthesis gas comprising NHwith an acidic cation exchange resin in the presence of water to remove NH, thereby obtaining purified synthesis gas.

Process for removal of hydrogen cyanide and ammonia from synthesis gas

The invention provides a process for removing COS and HS from a feed synthesis gas stream comprising COS and HS, the process comprising contacting the feed synthesis gas stream with solid adsorbent at a temperature in the range of from 100 to 240&#xb0; C. to remove carbonyl sulphide and hydrogen sulphide, thereby obtaining a purified synthesis gas stream, wherein the solid adsorbent comprises one or more metals or oxides of the metals or combinations thereof and the metals are selected from the group of Ag, Sn, Mo, Fe and Zn.

Process for removing carbonyl sulphide and hydrogen sulphide from a synthesis gas stream

The invention provides a process for the removal of COS and HS from a synthesis gas stream comprising COS and HS, the process having the steps of: removing HS from a feed synthesis gas stream with a first solid adsorbent to obtain a first synthesis gas stream, converting COS in the first synthesis gas stream to HS by contacting the first synthesis gas stream with a COS-hydrolysing catalyst in the presence of water in a hydrolysis zone to obtain a second synthesis gas stream depleted of COS and enriched in HS; and removing HS from the second synthesis gas stream by contacting the second synthesis gas stream with a second solid adsorbent in a HS removal zone to obtain a third synthesis gas stream depleted of HS and depleted of COS to very low levels.

[object Object]

A process for the reduction of carbonyl sulfide (COS) in a gas stream is described. It comprises contacting the gas stream with an iron oxide-based material. The present invention relates to the removal of COS from any type of gas stream, in particular those which include one or more of the group comprising ethane, methane, hydrogen, carbon dioxide, hydrogen cyanide, ammonia, hydrogen sulfide, and noble gases. These include natural gas, and in particular syngas. Syngas is useable in a Fischer-Tropsch process. The present invention provides a simple but effective process for the reduction of COS, especially with a material that can easily be located in existing guard beds&#x2014;avoiding any re-engineering time and costs. The iron oxide-based materials can also be useable against other impurities, providing a single bed solution.

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Amsterdam, Netherlands

Rudolf Henri Max Herold