公开(公告)号：US20110124834A1

公开(公告)日：2011-05-26

申请号：US12897199

申请日：2010-10-04

申请人： Jörg HEILEK ,  Dirk Litters ,  Klaus Joachim Müller-Engel

发明人： Jörg HEILEK ,  Dirk Litters ,  Klaus Joachim Müller-Engel

IPC分类号： C08F20/06 ,  C07C51/42

CPC分类号： C07C51/43 ,  C07C51/47 ,  C07C57/04

摘要： A process for starting up a separating process for purifying removal of acrylic acid crystals from a suspension S of crystals thereof in mother liquor with a hydraulic wash column which has a crystal melt circuit including crystal melt space, and a process space and a distributor space which are separated by an end with passages connecting the two spaces, in which the crystal bed is formed for the first time by first filling the crystal melt circuit and, at least partly, the process space with an acrylic acid-comprising startup liquid whose acrylic acid crystal formation temperature is less than or equal to the temperature of the suspension S increased by 15° C., and then continuing the filling of the wash column with the suspension S and optionally with control liquor until the difference between the pressure in the crystal melt space and the pressure in the distributor space falls suddenly, the arithmetic mean of the total waste liquor flow flowing through the filters of the filter tubes of the wash column until this time, based on the area of all filters, being not more than 80 m3/(m2·h).

摘要翻译： 一种用于利用具有包括晶体熔融空间的晶体熔融回路的液压洗涤柱从母液中的晶体悬浮液S中纯化除去丙烯酸晶体的分离过程的工艺，以及工艺空间和分配器空间， 通过连接两个空间的通道分开一端，其中通过首先填充晶体熔融回路并且至少部分地与包含丙烯酸的启动液体的工艺空间首次形成晶体床，其中丙烯酸 晶体形成温度小于或等于悬浮液S的温度升高15℃，然后用悬浮液S和任选地与对照液体继续填充洗涤柱，直到晶体熔体中的压力差 空间和分配器空间中的压力突然下降，流过滤器过滤器的总废液流的算术平均值 根据所有过滤器的面积，直到此时为止，洗涤塔的管子不超过80立方米/（m2·h）。

公开(公告)号：US08461383B2

公开(公告)日：2013-06-11

申请号：US12897199

申请日：2010-10-04

申请人： Joerg Heilek ,  Dirk Litters ,  Klaus Joachim Mueller-Engel

发明人： Joerg Heilek ,  Dirk Litters ,  Klaus Joachim Mueller-Engel

IPC分类号： C07C51/43

CPC分类号： C07C51/43 ,  C07C51/47 ,  C07C57/04

摘要： A process for starting up a separating process for purifying removal of acrylic acid crystals from a suspension S of crystals thereof in mother liquor with a hydraulic wash column which has a crystal melt circuit including crystal melt space, and a process space and a distributor space which are separated by an end with passages connecting the two spaces, in which the crystal bed is formed for the first time by first filling the crystal melt circuit and, at least partly, the process space with an acrylic acid-comprising startup liquid whose acrylic acid crystal formation temperature is less than or equal to the temperature of the suspension S increased by 15° C., and then continuing the filling of the wash column with the suspension S and optionally with control liquor until the difference between the pressure in the crystal melt space and the pressure in the distributor space falls suddenly, the arithmetic mean of the total waste liquor flow flowing through the filters of the filter tubes of the wash column until this time, based on the area of all filters, being not more than 80 m3/(m2·h).

摘要翻译： 一种用于利用具有包括晶体熔融空间的晶体熔融回路的液压洗涤柱从母液中的晶体悬浮液S中纯化除去丙烯酸晶体的分离过程的工艺，以及工艺空间和分配器空间， 通过连接两个空间的通道分开一端，其中通过首先填充晶体熔融回路并且至少部分地与包含丙烯酸的启动液体的工艺空间首次形成晶体床，其中丙烯酸 晶体形成温度小于或等于悬浮液S的温度升高15℃，然后用悬浮液S和任选地与对照液体继续填充洗涤柱，直到晶体熔体中的压力差 空间和分配器空间中的压力突然下降，流过滤器过滤器的总废液流的算术平均值 根据所有过滤器的面积，直到此时为止，洗涤塔的管子不超过80立方米/（m2·h）。