Technique for coproducing polyvinyl chloride from by-product hydrogen chloride of trichloroethylene
The invention relates to a production technology of trichloroethylene, with HCL as by-product and polyvinyl chloride as co-product, which is applicable to the corporations for producing chlor-alkali,calcium carbide process (PVC) and trichloroethylene, aiming at solving the difficult problem of recyc...
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Format | Patent |
Language | Chinese English |
Published |
24.02.2010
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Abstract | The invention relates to a production technology of trichloroethylene, with HCL as by-product and polyvinyl chloride as co-product, which is applicable to the corporations for producing chlor-alkali,calcium carbide process (PVC) and trichloroethylene, aiming at solving the difficult problem of recycling and processing byproduct HCL in the existing trichloroethylene production. A refining processis done to the HCL; the separated chlorohydrocarbon is directly sent to the distillation system of trichloroethylene; the HCL gas after the refining process can meet the technology requirement for HCLof VCM synthesis in PVC production in terms of gas purity, chlorohydrocarbon content and pressure; after five steps of chlorohydrocarbon rough separation, effective collection, adsorption in adsorbing tower, and so on, the HCL meets technology requirement; the qualified HCL, after being cooled and pressured, is sent to carry out VCM synthesis, which solves the problem of the HCL retraction mixingwith chlorohydrocarbon, red |
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AbstractList | The invention relates to a production technology of trichloroethylene, with HCL as by-product and polyvinyl chloride as co-product, which is applicable to the corporations for producing chlor-alkali,calcium carbide process (PVC) and trichloroethylene, aiming at solving the difficult problem of recycling and processing byproduct HCL in the existing trichloroethylene production. A refining processis done to the HCL; the separated chlorohydrocarbon is directly sent to the distillation system of trichloroethylene; the HCL gas after the refining process can meet the technology requirement for HCLof VCM synthesis in PVC production in terms of gas purity, chlorohydrocarbon content and pressure; after five steps of chlorohydrocarbon rough separation, effective collection, adsorption in adsorbing tower, and so on, the HCL meets technology requirement; the qualified HCL, after being cooled and pressured, is sent to carry out VCM synthesis, which solves the problem of the HCL retraction mixingwith chlorohydrocarbon, red |
Author | LIU DINGWEN HUANG DALI WANG JIE XIE NANJIE LI YING |
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RelatedCompanies | GUIZHOU ZUNYI ALKALI PLANT GUIZHOU BLUE SKY CHEMICAL CO., LTD |
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Snippet | The invention relates to a production technology of trichloroethylene, with HCL as by-product and polyvinyl chloride as co-product, which is applicable to the... |
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Title | Technique for coproducing polyvinyl chloride from by-product hydrogen chloride of trichloroethylene |
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