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首页> 外国专利> DESULFURIZATION PROCESS FOR REMOVAL OF REFRACTORY ORGANOSULFUR HETEROCYCLES FROM PETROLEUM STREAMS

DESULFURIZATION PROCESS FOR REMOVAL OF REFRACTORY ORGANOSULFUR HETEROCYCLES FROM PETROLEUM STREAMS

机译：脱除石油流中难降解有机硫杂物的脱硫工艺

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Hydrocarbon feeds are upgraded by contact of the stream underhydrodesulfurization (HDS) conditions with a catalyst systemcomprising a sulfided transition metal promoted tungsten/molybdenum HDScatalyst, e.g., Ni/Co-Mo/A 12O3 and a solid acid catalystwhich is effective for the isomerization/disproportionation/transalkylation ofalkyl substituted, condensed ring heterocyclic sulfur compoundspresent in the feedstream, e.g. zeolite or a heteropolyacid compound.Isomerization, disproportionation and transalkylation reactions convertrefractory sulfur compounds such as 4- or 4,6-alkyl dibenzothiophenes intocorresponding isomers or disproportionated isomers which can bemore readily desulfurized by conventional HDS catalysts to H2S and otherproducts. A hydrocarbon feed is first passed to a hydrotreatingreactor (1). The effluent from the hydrotreating reactor (1) goes through ahigh-pressure gas-liquid separator (2) and is passed to afractionator (3). The fractionator bottoms are passed to reactor (4) andeffluent from reactor (4) is recycled to hydrotreater (1).
机译：烃类进料是通过在催化剂体系的加氢脱硫（HDS）条件包含硫化过渡金属促进的钨/钼HDSNi / Co-Mo / A 12O3等催化剂和固体酸催化剂对异戊二烯的异构化/歧化/烷基转移有效烷基取代的稠环杂环硫化合物存在于进料流中，例如沸石或杂多酸化合物。异构化，歧化和烷基转移反应转化难熔硫化合物，例如4-或4,6-烷基二苯并噻吩相应的异构体或歧化异构体传统的HDS催化剂更容易将其脱硫为H2S和其他产品。首先将碳氢化合物进料进行加氢处理反应器（1）。加氢处理反应器（1）的流出物通过高压气液分离器（2）并通过分馏器（3）。将分馏塔的塔底物料通入反应器（4），然后将反应器（4）的流出物再循环至加氢处理机（1）。

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