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Hydrogen fluoride treating system

阅读:584发布:2023-11-05

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1. THE METHOD OF REMOVING IMPURITIES IN A HYDROGEN FLUORIDE TREATMENT SYSTEM WHEREIN A HYDROCARBON CONTAINING DISSOLVED WATER AND SULFUR COMPOUNDS IS CONTACTED WITH HYDROGEN FLUORIDE UNDER CONDITIONS TO FROM RAFFINATE AND EXTRACT PHASES AND SAID PHASES ARE SEPARATELY STRIPPED IN STRIPPING ZONES TO REMOVE SUBSTANTIALLY ALL HYDROGEN FLUORIDE, WATER, HYDROGEN SULFIDE AND NORMALLY GASEOUS HYDROCARBONS THEREFROM AS STRIPPER OVERHEAD STREAMS, WHICH METHOD COMPRISES PARTIALLY CONDENSING AT LEAST ONE OF SAID STRIPPER OVERHEAD STREAMS TO OBTAIN A LIQUID AQUEOUS HYDROGEN FLUORIDE STREAM AND A GASEOUS HYDROGEN FLUORIDE STREAM CONTAINING H2S, EXTRACTIVELY DISTILLING SAID AQUEOUS HYDROGEN FLUORIDE STREAM WITH CONCENTRATED SULFURIC ACID BY INTRODUCING SAID CONCENTRATED SULFURIC ACID AT
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