Selexol and Wastewater H2S and Siloxane Treatment
Selexol and Wastewater H2S and Siloxane Treatment
(OP)
Anybody got any info on this subject?
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Selexol and Wastewater H2S and Siloxane Treatment
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RE: Selexol and Wastewater H2S and Siloxane Treatment
Don't believe that the Selexol process is used on any wastewater treatment systems because other processes are much more economical.
The Selexol process is used on acid gas cleanups. It is an acid gas removal system to separate the H2S from the syngas in coal gasification processes:
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The Selexol process uses a physical solvent to remove acid gas from streams of synthetic or natural gas. The process may be regenerated either thermally, by flashing, or by stripping gas. The Selexol process is ideally suited for the selective removal of H2S and other sulfur compounds, or for the bulk removal of CO2.
The Selexol process uses Union Carbide’s Selexol solvent, a physical solvent made of a dimethyl ether of polyethylene glycol. The Selexol solvent is chemically inert and is not subject to degradation.
Acid gas partial pressure is the key driving force for the Selexol process. Typical feed conditions range between 300 and 2000 psia with acid gas composition (CO2 + H2S) from 5% to more than 60% by volume. The product specifications achievable depend on the application and can be anywhere from ppmv up to percent levels of acid gas.
Siloxane Treatment is a completely different process:
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RE: Selexol and Wastewater H2S and Siloxane Treatment
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