METHOD FOR PRODUCING HIGHLY PURE MONOETHYLENE GLYCOL

    公开(公告)号:PL195588B1

    公开(公告)日:2007-10-31

    申请号:PL34758099

    申请日:1999-09-21

    Applicant: BASF AG

    Abstract: A process for the distillative recovery of high purity monoethylene glycol from the hydrolysis, product of ethylene oxide by pressure dewatering, preferably in a battery, vacuum dewatering and subsequent purifying distillation, wherein during the vacuum dewatering an aqueous stream is withdrawn which contains-monoethylene glycol in a concentration below 1% by weight, preferably below 0.1% by weight, medium boilers and low boilers. The withdrawn aqueous stream is, optionally after further workup, removed from the system.

    5.
    发明专利
    未知

    公开(公告)号:DE59907884D1

    公开(公告)日:2004-01-08

    申请号:DE59907884

    申请日:1999-09-21

    Applicant: BASF AG

    Abstract: A process for the distillative recovery of high purity monoethylene glycol from the hydrolysis, product of ethylene oxide by pressure dewatering, preferably in a battery, vacuum dewatering and subsequent purifying distillation, wherein during the vacuum dewatering an aqueous stream is withdrawn which contains-monoethylene glycol in a concentration below 1% by weight, preferably below 0.1% by weight, medium boilers and low boilers. The withdrawn aqueous stream is, optionally after further workup, removed from the system.

    6.
    发明专利
    未知

    公开(公告)号:PT880491E

    公开(公告)日:2001-10-30

    申请号:PT97901073

    申请日:1997-01-21

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP97/00271 Sec. 371 Date Jul. 16, 1998 Sec. 102(e) Date Jul. 16, 1998 PCT Filed Jan. 21, 1997 PCT Pub. No. WO97/27164 PCT Pub. Date Jul. 31, 1997A process for obtaining glycols of low aldehyde content in which the plant used to obtain the glycol(s) is surface-treated, in whole or in part, with at least one reductive phosphorus compound.

    7.
    发明专利
    未知

    公开(公告)号:ES2159832T3

    公开(公告)日:2001-10-16

    申请号:ES97901073

    申请日:1997-01-21

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP97/00271 Sec. 371 Date Jul. 16, 1998 Sec. 102(e) Date Jul. 16, 1998 PCT Filed Jan. 21, 1997 PCT Pub. No. WO97/27164 PCT Pub. Date Jul. 31, 1997A process for obtaining glycols of low aldehyde content in which the plant used to obtain the glycol(s) is surface-treated, in whole or in part, with at least one reductive phosphorus compound.

    8.
    发明专利
    未知

    公开(公告)号:BR9913889A

    公开(公告)日:2001-07-03

    申请号:BR9913889

    申请日:1999-09-21

    Applicant: BASF AG

    Abstract: A process for the distillative recovery of high purity monoethylene glycol from the hydrolysis, product of ethylene oxide by pressure dewatering, preferably in a battery, vacuum dewatering and subsequent purifying distillation, wherein during the vacuum dewatering an aqueous stream is withdrawn which contains-monoethylene glycol in a concentration below 1% by weight, preferably below 0.1% by weight, medium boilers and low boilers. The withdrawn aqueous stream is, optionally after further workup, removed from the system.

    طريقة ومبخر لتبخير مركبات حساسة للأكسدة

    公开(公告)号:SA1144B1

    公开(公告)日:2006-08-20

    申请号:SA97180477

    申请日:1997-10-08

    Applicant: BASF AG

    Abstract: الملخص: يتعلقالإختراعبعمليةلتبخيرسائليحتويعلىمركباتقابلةللتبخرحساسةللأكسدة vaporizable oxidation-sensitive compounds فيمبخر evaporator الذيفيهيتصلالسائلمعسطحصلبساخنللتبخير،بواسطةعمليةفيهايتجنبجوهرياالإتصالالمباشربينحالةالبخار vapor phase الناتجوالسطحالصلبالساخن،ومبخر evaporator يشملسطحصلبقابلللتسخين،جهازلتسخينالسطحالصلب. يتعلقالإختراعأيضابمبخر evaporator متكونمنسطحصلبقابلللتسخين (٦١)،جهاز (٢،٣) لتسخينالسطحالصلبوجهاز (١٠) لتغذيةسائليحتويعلىمركباتقابلةللتبخرإلىالسطحالصلبالقابلللتسخين،حيثيصممويرتبالجهازلتغذيةالسائلفيالمبخر evaporator بحيث (١٢،١٤،١٨) يتجنبجوهرياالإتصالالمباشربينحالةالبخار vapor phase الناتجوالسطحالصلبالقابلللتسخين.،

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