Process for removing heavy metals from process streams
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United States of America Patent
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Mar 6, 2018
Grant Date -
Jul 2, 2015
app pub date -
Jul 10, 2013
filing date -
Jul 26, 2012
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Abstract
A process for removing heavy metals from process fluids includes passing a heavy-metal-containing process fluid, including a reductant selected from hydrogen and carbon monoxide, at an inlet temperature ≦125° C. over a sorbent including
- (i) 4-75% by weight of one or more sulphided copper compounds selected from sulphided basic copper carbonate, sulphided copper hydroxide, sulphided copper oxide or mixtures of these,(ii) optionally a support material, and(iii) a binder and the binder content of the sorbent is in the range 5-30% by weight,wherein essentially all of the sulphided copper is in the form of CuS and the total metal sulphide content of the sorbent, other than copper sulphide, is ≦5% wt.
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