06221241 is referenced by 15 patents and cites 24 patents.

A process for the purification of a fluid stream containing a sulphur contaminant, such as hydrogen sulphide, and mercury, phosphine, stibine, and/or arsenic compounds as a second contaminant wherein said fluid stream is passed through a bed of a particulate absorbent containing a sulphide of a variable valency metal, especially copper, that is more electropositive than mercury, to remove said second contaminant and then the sulphur contaminant is removed from at least part of the effluent from that bed by passing that part of the effluent through a bed of a particulate sulphur absorbent comprising a compound selected from oxides, hydroxides, carbonates and basic carbonates of said variable valency metal is disclosed. The removal of the sulphur contaminant converts said variable valency metal compound to the corresponding sulphide. The resulting bed of variable valency metal sulphide is subsequently used for the removal of the second contaminant.

Title
Process for removal of sulphur together with other contaminants from fluids
Application Number
9/426914
Publication Number
6221241 (B1)
Application Date
October 26, 1999
Publication Date
April 24, 2001
Inventor
Edwin Stephen Willis
Northallerton
US
Peter John Herbert Carnell
Stockton on Tees
US
Agent
Pillsbury Winthrop
US
Assignee
Imperial Chemical
US
IPC
C07C 7/12
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