公开(公告)号：US06392096B1

公开(公告)日：2002-05-21

申请号：US09902467

申请日：2001-07-11

Applicant: Johannes H Mennen ,  Kees Jonckers

Inventor： Johannes H Mennen ,  Kees Jonckers

IPC: C07C27304

CPC classification number: C07C273/04

Abstract: The invention relates to a process for the preparation of urea from ammonia and carbon dioxide, the preparation being effected in whole or in part in a vertical combi-reactor. The gas stream leaving the stripper is fed to the condenser section of a vertical combi-reactor in which this gas stream is wholly or partially condensed in the carbamate stream which is transferred from the scrubber section to the condenser section via a downcomer. Ammonia and carbon dioxide are partially converted into urea in this condenser section of the combi-reactor. The urea conversion is completed in the reaction section of the combi-reactor.

Abstract translation: 本发明涉及一种从氨和二氧化碳制备尿素的方法，该方法全部或部分地在立式组合反应器中进行。 离开汽提塔的气流被送入垂直组合反应器的冷凝器部分，其中该气流在氨基甲酸盐流中完全或部分冷凝，氨基甲酸酯流通过降液管从洗涤器部分转移到冷凝器部分。 在组合反应器的冷凝器部分，氨和二氧化碳部分转化为尿素。 尿素转化在组合反应器的反应段中完成。