公开(公告)号：US5707511A

公开(公告)日：1998-01-13

申请号：US362073

申请日：1994-12-22

申请人： Gerald E. Markley ,  George C. Hadjiloizou

发明人： Gerald E. Markley ,  George C. Hadjiloizou

IPC分类号： C10G45/02

CPC分类号： C10G45/02

摘要： A process for simultaneously removing heteroatoms, such as sulfur, from a virgin distillate stream and a light catalytic cyclic stream in two reaction zones in a hydrotreating process unit. One reaction zone will be a low temperature reaction zone and the other will be the high temperature zone. In the low temperature reaction zone, the cracked stream is reacted with a hydrotreating catalyst at a predetermined temperature and in high temperature reaction zone, the virgin distillate stream is reacted with a catalyst which is less reactive than that of the first reaction zone. When catalyst in the high reaction zone is replaced with fresh catalyst the temperature is lowered so that it now becomes the low temperature zone in which the cracked stream is redirected. Correspondingly, the virgin stream is redirected to the other reaction zone whose temperature is now raised and which becomes the high temperature zone and which now contains a catalyst less active than the low temperature reaction zone which now contains the fresher more active catalyst. This cyclic operation is repeated each time fresh catalyst is substituted for spent catalyst.

摘要翻译： 在加氢处理单元中的两个反应区中同时从原始馏出物流中除去杂原子如硫的方法和轻质催化的环状物流。 一个反应区是低温反应区，另一个是高温区。 在低温反应区中，裂化物流与加氢处理催化剂在预定温度和高温反应区中反应，原始馏出物流与反应性低于第一反应区的催化剂反应。 当高反应区中的催化剂被新鲜的催化剂代替时，温度降低，使其现在成为破裂流被重定向的低温区。 相应地，原始物流被重定向到温度现在升高的另一个反应区，并且其成为高温区，现在含有比现在含有更新鲜的活性催化剂的低温反应区活性较低的催化剂。 每当新鲜催化剂代替废催化剂时，重复该循环操作。