固体副生成物の除去工程を含んでなる、硫化水素および二酸化硫黄含有ガスの処理方法ならびに装置

Japanese Patent JP4450901

B2

By-product layer lies between liquid sulfur and separated solvent. Liquid fraction containing solid by-products is removed at the layer level and subjected to specified treatment, to give a mainly by-product flow and a by-product-free solvent flow. Effluent gas free from H2S and SO2 is recovered. Liquid sulfur is separated from solvent by liquid-liquid decantation. Treatment of the liquid fraction containing solid by-products involves carrying out at least one of the following operations at 120-180 degrees C: (a) treatment with an aqueous phase such as water at a temperature, pressure (preferably between atmospheric pressure and 1.5 MPa), and flow rate sufficient to solubilize at least the major part of the solid by-products in the aqueous phase, and to obtain liquid-liquid separation between the aqueous phase and an organic phase containing most of the removed solvent, and/or (b) filtration treatment, and/or (c) collection on a solid support of by-products in order to recover at least two phases: a phase consisting of solvent depleted in solid by-products and a phase discharged from regeneration of the collection bed and containing most of the by-products. Independent claims are given for: (i) a device used for implementation of the process; and (ii) application of the process for treatment of effluent from Claus units for treatment of hydrogen sulfide discharged from natural gas purification and petrol refining operations.

Fabric control
Christian Strachee
Daniel Bunayoan
Cecil Barul-Torrika

JP28637799A

April 14, 2010

October 07, 1999

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ENI S.P.A.

B01D53/50; C01B17/04; B01D53/52; B01D53/77; B01D53/86; C01B17/02; C01B17/033; C01B17/05

US4565678
US5951961

Akio Miyazaki
Nobuyuki Kaneda
Ishibashi Masayuki
Katsuhiro Ito

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