Sorbent use with oxyfuel sour compression

Sulfur dioxide (SO 2 ) is removed from carbon dioxide feed gas (2) comprising SO 2 as a contaminant by maintaining the carbon dioxide feed gas at an elevated pressure in contact with an alkaline sorbent (14) for a period of time sufficient to react said alkaline sorbent with SO 2 (12). Where NO x ,...

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Bibliographic Details
Main Authors FOGASH KEVIN BOYLE, WHITE VINCENT, PETROCELLI FRANCIS PETER
Format Patent
LanguageEnglish
Published 18.02.2015
Subjects
CHEMISTRY
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
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Summary:Sulfur dioxide (SO 2 ) is removed from carbon dioxide feed gas (2) comprising SO 2 as a contaminant by maintaining the carbon dioxide feed gas at an elevated pressure in contact with an alkaline sorbent (14) for a period of time sufficient to react said alkaline sorbent with SO 2 (12). Where NO x , oxygen (O 2 ) and water are also present, not only is the rate of reaction with the sorbent increased, but also additional SO 2 is removed by conversion (18) to sulfuric acid, and NO x is removed as nitric acid. The method has particular application in the removal of SO 2 and NO x from flue gas produced by oxyfuel combustion of a hydrocarbon or carbonaceous fuel.
Bibliography:Application Number: CN201110286424