Removal of hydrogen sulfide from process streams
First Claim
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1. A process for removing H2S from a gas stream containing H2S, the process comprising(i) assessing the O2/H2S molar ratio in the H2S containing gas stream to determine if the O2/H2S molar ratio is less than about 1.5;
- (ii) mixing air or oxygen into the H2S containing gas stream at a rate to achieve an O2/H2S molar ratio equal to or greater than about 1.5, if the measured O2/H2S molar ratio is less than about 1.5;
(iii) assessing the relative humidity of the H2S containing gas stream to determine if the relative humidity is equal to or greater than about 50%;
(iv) reducing the relative humidity of the H2S gas stream to less than about 50%, if the measured relative humidity is greater than 50%; and
subsequently(v) contacting the H2S containing gas stream with a porous amorphous solid mixed metal oxy-hydroxide H2S removal media comprising copper and iron.
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Abstract
Disclosed are processes for gas streams containing H2S, the processes comprise contacting the gas streams with a mixed metal oxy-hydroxide media comprising two or more metals selected from the group consisting of iron, copper and silicon.
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Citations
8 Claims
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1. A process for removing H2S from a gas stream containing H2S, the process comprising
(i) assessing the O2/H2S molar ratio in the H2S containing gas stream to determine if the O2/H2S molar ratio is less than about 1.5; -
(ii) mixing air or oxygen into the H2S containing gas stream at a rate to achieve an O2/H2S molar ratio equal to or greater than about 1.5, if the measured O2/H2S molar ratio is less than about 1.5; (iii) assessing the relative humidity of the H2S containing gas stream to determine if the relative humidity is equal to or greater than about 50%; (iv) reducing the relative humidity of the H2S gas stream to less than about 50%, if the measured relative humidity is greater than 50%; and
subsequently(v) contacting the H2S containing gas stream with a porous amorphous solid mixed metal oxy-hydroxide H2S removal media comprising copper and iron. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification