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Title: Removing sulphur oxides from a fluid stream

Abstract

A process for removing sulphur oxides from a fluid stream, such as flue gas, comprising: providing a non-aqueous absorption liquid containing at least one hydrophobic amine, the liquid being incompletely miscible with water; treating the fluid stream in an absorption zone with the non-aqueous absorption liquid to transfer at least part of the sulphur oxides into the non-aqueous absorption liquid and to form a sulphur oxide-hydrophobic amine-complex; causing the non-aqueous absorption liquid to be in liquid-liquid contact with an aqueous liquid whereby at least part of the sulphur oxide-hydrophobic amine-complex is hydrolyzed to release the hydrophobic amine and sulphurous hydrolysis products, and at least part of the sulphurous hydrolysis products is transferred into the aqueous liquid; separating the aqueous liquid from the non-aqueous absorption liquid. The process mitigates absorbent degradation problems caused by sulphur dioxide and oxygen in flue gas.

Inventors:
; ; ; ; ;
Issue Date:
Research Org.:
Research Triangle Institute, Research Triangle Park, NC (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1129174
Patent Number(s):
8,691,171
Application Number:
13/782,290
Assignee:
BASF SE (DE); Research Triangle Institute (Research Triangle Park, NC)
DOE Contract Number:  
AR0000093
Resource Type:
Patent
Resource Relation:
Patent File Date: 2013 Mar 01
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Katz, Torsten, Riemann, Christian, Bartling, Karsten, Rigby, Sean Taylor, Coleman, Luke James Ivor, and Lail, Marty Alan. Removing sulphur oxides from a fluid stream. United States: N. p., 2014. Web.
Katz, Torsten, Riemann, Christian, Bartling, Karsten, Rigby, Sean Taylor, Coleman, Luke James Ivor, & Lail, Marty Alan. Removing sulphur oxides from a fluid stream. United States.
Katz, Torsten, Riemann, Christian, Bartling, Karsten, Rigby, Sean Taylor, Coleman, Luke James Ivor, and Lail, Marty Alan. Tue . "Removing sulphur oxides from a fluid stream". United States. https://www.osti.gov/servlets/purl/1129174.
@article{osti_1129174,
title = {Removing sulphur oxides from a fluid stream},
author = {Katz, Torsten and Riemann, Christian and Bartling, Karsten and Rigby, Sean Taylor and Coleman, Luke James Ivor and Lail, Marty Alan},
abstractNote = {A process for removing sulphur oxides from a fluid stream, such as flue gas, comprising: providing a non-aqueous absorption liquid containing at least one hydrophobic amine, the liquid being incompletely miscible with water; treating the fluid stream in an absorption zone with the non-aqueous absorption liquid to transfer at least part of the sulphur oxides into the non-aqueous absorption liquid and to form a sulphur oxide-hydrophobic amine-complex; causing the non-aqueous absorption liquid to be in liquid-liquid contact with an aqueous liquid whereby at least part of the sulphur oxide-hydrophobic amine-complex is hydrolyzed to release the hydrophobic amine and sulphurous hydrolysis products, and at least part of the sulphurous hydrolysis products is transferred into the aqueous liquid; separating the aqueous liquid from the non-aqueous absorption liquid. The process mitigates absorbent degradation problems caused by sulphur dioxide and oxygen in flue gas.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {4}
}

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