4.
    发明专利
    未知

    公开(公告)号:MX171295B

    公开(公告)日:1993-10-18

    申请号:MX1073388

    申请日:1988-03-11

    Applicant: HOECHST AG

    Abstract: A process for the removal of solid particles from a mixture containing at least one liquid chlorinated hydrocarbon is described. The solids-containing liquid mixture is introduced into at least one hydrocyclone having a downstream separator. The liquid mixture which has been enriched in solids and discharged from the hydrocyclone is preferably subjected to sedimentation of the solid particles, without the use of centrifugal forces. Efficient removal of interfering particles is achieved in this way, together, with long service lives and a minimum of emission.

    6.
    发明专利
    未知

    公开(公告)号:RO72435A

    公开(公告)日:1981-06-26

    申请号:RO8190375

    申请日:1975-04-05

    Applicant: HOECHST AG

    Abstract: Vinyl chloride is produced by pyrolytic decomposition of 1,2-dichloroethane in a furnace with coiled up reaction tube having an internal diameter of from 12 to 16 cm. The dichloroethane is vaporized completely in the convection zone of the pyrolytic furnace, different amounts of heat are supplied to the different zones of the reaction tube and, after decomposition in the working up of the reaction products, the low-boiling constitutents are treated with chlorine and separated together with the high-boiling constituents.

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