Abstract
We have developed technology for hydrogen-free removal of sulfur compounds (H2S + RSH + COS + CH3–S–CH3) from wide cut light hydrocarbon fractions (WCLHs) and target products (C3, C4, iso-C5, n-C5) of gas-fractionation plants, including base-catalysis treatment to remove hydrogen sulfide and mercaptans from WCLHs, utilizing the homogeneous catalyst IVKAZ; removal of carbonyl sulfide from propane with hot alkali and regeneration of the alkali; removal of dimethyl sulfide from isopentane by azeotropic distillation; oxidative catalytic treatment of sulfur-containing alkaline wastes using the homogeneous catalyst IVKAZ. The obvious advantages of the homogeneous catalyst IVKAZ compared with the heterogeneous phthalocyanine catalysts KS and KSM in demercaptanization of light hydrocarbon feedstock and oxidative treatment of sulfur-containing alkaline wastes has been proven in practice.
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