B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
23/343
B01D 53/14 (2006.01)
Patent
CA 1196476
A B S T R A C T WASH PROCESS Process for the removal of H2S from a sour gas by converting the H2S to sulphur using a polyvalent metal chelate solution of nitrilotriacetic acid, washing the sulphur with an aqueous wash solution, contacting the used wash solution with HCl, H2SO4 or H3PO4 to precipitate solid nitrilotriacetic acid and recovering precipitated nitrilotriacetic acid.
418870
Shell Canada Limited
Smart & Biggar
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