Production of H2S for efficient metal removal from effluents
Assignee1983 LLC
InventorDania Valenzuela
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Abstract
Method and apparatus pertaining to the production of hydrogen sulfide using sodium salts recycle. Sodium sulfate is reacted with a carbon containing stream to produce sodium sulfide and carbon dioxide. The sodium sulfide is blended with elemental sulfur and water. The blend is subjected to elevated temperatures and pressures to result in the production of hydrogen sulfide and sodium sulfate. A mixing apparatus, such as a bubble column reactor, has been found to be especially useful. The hydrogen sulfide can be used for removing metal from effluents.
Claims22
A method to extract metals in a liquid stream containing at least one metal, comprising the steps of:
- flowing gaseous hydrogen sulfide (H2S) into a mixing apparatus containing the liquid stream;
- wherein
- the gaseous hydrogen sulfide and the liquid stream are mixed under conditions sufficient to extract the at least one metal, and wherein a make-up stream of Na2SO4 is combined with a Na2SO4 liquor recycle stream and directed into a Na2SO4 concentrator to extract water to thereby increase a Na2SO4 concentration, and the concentrated Na2SO4 is then directed through a pump into a Na2SO4/Na2S converter and natural gas flows in conjunction with the Na2SO4.
A method to extract metals in a liquid stream containing at least one metal, comprising the steps of:
- flowing gaseous hydrogen sulfide (H2S) into a mixing apparatus containing the liquid stream and comprised of one or more bubble column reactors;
- wherein the gaseous hydrogen sulfide and the liquid stream are mixed with natural gas in conjunction with Na2SO4 under conditions sufficient to extract the at least one metal.
Dependencies are inferred from the claim text.