发明名称 PROCESS FOR THE PREPARATION OF UREA
摘要 Process for the preparation of urea from ammonia and carbon dioxide in which all or part of the liquid ammonia needed for the process is supplied to the high-pressure scrubber in such a way that it is in direct contact with the other streams supplied to this scrubber. In particular in such a way that there is direct contact between the liquid ammonia and the off-gases transferred to the high-pressure scrubber from the urea synthesis reactor. More in particular in such a way that there is direct contact between the liquid ammonia and the off-gases transferred to the high-pressure scrubber from the urea reactor and with the carbamate stream, which is transferred from the low-pressure urea recovery section.
申请公布号 WO0240443(A1) 申请公布日期 2002.05.23
申请号 WO2001NL00799 申请日期 2001.11.01
申请人 DSM N.V.;BIERMANS, ANDREAS, JOHANNES;JONCKERS, KEES 发明人 BIERMANS, ANDREAS, JOHANNES;JONCKERS, KEES
分类号 C07C273/04;(IPC1-7):C07C273/04 主分类号 C07C273/04
代理机构 代理人
主权项
地址