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    Process for separating mono-chloromethylation and di-chloromethylation product of a c10 or lower aromatic hydrocarbon
    4.
    发明授权
    Process for separating mono-chloromethylation and di-chloromethylation product of a c10 or lower aromatic hydrocarbon 失效
    分离C10或更低芳烃的单氯乙烯和二氯乙烯化产物的方法

    公开(公告)号：US3652689A

    公开(公告)日：1972-03-28

    申请号：US3652689D

    申请日：1968-05-02

    申请人： EXXON RESEARCH ENGINEERING CO

    发明人： CIER HARRY E ,  WILDER HULEN L

    IPC分类号： C07C17/38 ,  C07C17/392 ,  C07C22/04 ,  C07C25/14

    CPC分类号： C07C22/04 ,  C07C17/38 ,  C07C17/392

    摘要： A PROCESS FOR SEPARATING THE MONO-CHLOROMETHYLATION FROM THE DI-CHLOROMETHYLATION PRODUCTS OF AROMATIC HYDROCARBONS OF C10 OR LOWER WHOSE MONO-CHLOROMETHYLATION PRODUCTS HAVE A MELTING POINT OF ABOUT 25*C. OR HIGHER. A CHLOROMETHYLATION REACTION MIXTURE IS HEATED WITH A C6 TO C9 AROMATIC HYDROCARBON IN THE LIQUID PHASE TO DISSOLVE THE MONO-CHLOROMETHYLATION AND DI-CHLOROMETHYLATION PRODCUTS AND IS THEN COOLED TO PRECIPITATE SOLID DI-CHLOROMETHYLATION PRODUCT. SOLID DI-CHLOROMETHYALTION PROCUCT IS SEPARATED FROM THE AROMATIC HYDROCARBON SOLUTION AND WASHED WITH A C5 TO C8 SATURATED HYDROCARBON IN THE LIQUID PHASE TO HIGH PURITY. THE AROMATIC HYDROCARBON SOLUTION IS VAPORIZED TO LEAVE A RESIDUE INCLUDING THE MONO-CHLOROMETHYLATED PRODUCT. THE RESIDUE IS HEATED WITH A SATURATED C5 TO C8 HYDROCARBON IN THE LIQUID PHASE TO DISSOLVE MONO-CHLOROMETHYLATED PRODUCT THEREIN. THEN THE HOT SATURATED HYDROCARBON IS SEPARATED FROM UNDISSOLVED SOLIDS AND IS COOLE TO PRECIPITATE SOLID MONO-CHLOROMETHYLATED PRODUCT, WHICH IS THEN RECOVERED FROM THE SATURATED HYDROCARBON.