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PROCESS FOR EXTRACTING (CHLORINATED) HYDROCARBON-FREE HYDROGEN CHLORIDE AND PHOSGENE-FREE (CHLORINATED) HYDROCARBONS FROM A HYDROGEN CHLORIDE STREAM CONTAINING (CHLORINATED) HYDROCARBONS AND PHOSGENE
PROCESS FOR EXTRACTING (CHLORINATED) HYDROCARBON-FREE HYDROGEN CHLORIDE AND PHOSGENE-FREE (CHLORINATED) HYDROCARBONS FROM A HYDROGEN CHLORIDE STREAM CONTAINING (CHLORINATED) HYDROCARBONS AND PHOSGENE
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机译:从含(氯)氢和氯的氢氯化物流中提取(氯化)无氢氯化氢和无气(氯化)氢的方法
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摘要
In a process for extracting (chlorinated) hyrocarbon-free hydrogen chloride and phosgene-free (chlorinated) hydrocarbons from a hydrogen chloride stream containing (chlorinated) hydrocarbons and phosgene, (i) the fresh hydrogen chloride stream containing phosgene and (chlorinated) hydrocarbons is led in a first step first through a first adsorber and then through a second adsorber interconnected in series, until essentially no more (chlorinated) hydrocarbon is adsorbed by the first adsorber; (ii) the fresh hydrogen chloride stream is led in a second step through the second adsorber, while the first adsorber is regenerated, substantially phosgene-free (chlorinated) hydrocarbon being produced during regeneration; (iii) the fresh hydrogen chloride stream is led in a third step first through the second adsorber and then through the regenerated first adsorber, until substantially no more (chlorinated) hydrocarbon is adsorbed by the second adsorber; (iv) the fresh hydrogen chloride stream is led in a fourth step through the first adsorber, while the second adsorber is regenerated, a substantially phosgene-free (chlorinated) hydrocarbon being produced during regeneration, and steps (i) to (iv) can be successively repeated one or more times.
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