公开(公告)号：US07332070B2

公开(公告)日：2008-02-19

申请号：US10555080

申请日：2004-07-15

申请人： Hiroto Nishida ,  Kouji Kishinami ,  Tomohiro Arase

发明人： Hiroto Nishida ,  Kouji Kishinami ,  Tomohiro Arase

IPC分类号： C10G75/04 ,  C08F6/00

CPC分类号： F28F19/00 ,  C08F2/007 ,  C08F10/00 ,  C10G75/04 ,  Y10S585/95

摘要： A specific nonionic surfactant is added to a component mainly comprising hydrocarbons before passing through a heat exchanger in a petrochemical plant or a polyolefin production plant, whereby fouling of the heat exchanger can be efficiently prevented, that is, the performance of the heat exchanger can be prevented from being deteriorated, and long-term operation is feasible without sacrificing the speed of production. The nonionic surfactant is preferably a polyoxyalkylene compound represented by the general formula [I] below, more preferably a compound represented by the general formula [II] below. R1—O—[CH2—CH(R3)—O]k—R2[I] wherein R1, R2 and R3 are selected from a hydrogen atom, a C1 to C20 alkyl group, a C6 to C20 aryl group and a C1 to C20 acyl group, and may be the same or different from each other. HO—(CH2CH2O)m—[CH2CH(CH3)O]n—(CH2CH2O)pH[II] wherein m, n and p each represent the average number of repeating units, and m is in the range of 1 to 20, n is 2 to 50 and p is 1 to 20.

摘要翻译： 在通过石油化工厂或聚烯烃生产设备中的热交换器之前，将特定的非离子表面活性剂加入到主要包含烃的组分中，从而可以有效地防止热交换器的结垢，即热交换器的性能可以 防止恶化，长期经营不牺牲生产速度。 非离子表面活性剂优选为下述通式[I]表示的聚氧化烯化合物，更优选为下述通式[II]表示的化合物。 <？in-line-formula description =“In-line formula”end =“lead”？> R 1 -O - [CH 2 CH 2（R 0 > 3 其中R 1，R 2，R 3和R 3选自氢原子，C 1至C 20烷基，C 6至C 20 C20芳基和C1〜C20酰基，可以相同也可以不同。 <？in-line-formula description =“In-line formula”end =“lead”？> HO-（CH 2）2 CH 2）O < - （CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 3） 其中m，n和p各自代表一个或多个，其中m，n和p各自表示 平均重复单元数，m为1〜20的范围，n为2〜50，p为1〜20。