发明申请
US20100137652A1 MULTI-STAGE PROCESS AND APPARATUS FOR RECOVERING DICHLOROHYDRINS
失效
用于回收二氯乙烯的多级处理和装置
- 专利标题: MULTI-STAGE PROCESS AND APPARATUS FOR RECOVERING DICHLOROHYDRINS
- 专利标题(中): 用于回收二氯乙烯的多级处理和装置
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申请号: US12595480申请日: 2008-04-11
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公开(公告)号: US20100137652A1公开(公告)日: 2010-06-03
- 发明人: Danil Tirtowidjojo , Andrei S. Merenov , Christian D. Kneupper , Bruce D. Hook , Anil I. Mehta
- 申请人: Danil Tirtowidjojo , Andrei S. Merenov , Christian D. Kneupper , Bruce D. Hook , Anil I. Mehta
- 国际申请: PCT/US08/59968 WO 20080411
- 主分类号: C07C29/82
- IPC分类号: C07C29/82 ; B01D3/26
摘要:
A process and apparatus for recovering dichlorohydrins from a mixture comprising dichlorohydrins, one or more compounds selected from esters of dichlorohydrins, monochlorohydrins and/or esters thereof, and multihydroxylated-aliphatic hydrocarbon compounds and/or esters thereof, and optionally one or more substances comprising water, chlorinating agents, catalysts and/or esters of catalysts is disclosed. The mixture is distilled or fractionated to separate a lower boiling fraction comprising dichlorohydrin(s) from the mixture to form a higher boiling fraction comprising the residue of the distillation or fractionation. The higher boiling fraction is stripped to recover remaining dichlorohydrins. Advantages include more efficient recovery of dichlorohydrins for a given distillation column, less waste due to avoiding the conditions conducive to the formation of heavy byproducts, and reduced capital investment in recovery equipment.
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