公开(公告)号：US20130207035A1

公开(公告)日：2013-08-15

申请号：US13754584

申请日：2013-01-30

Applicant: Jozef Hubert MEESSEN

Inventor： Jozef Hubert MEESSEN

IPC: B01D53/92

CPC classification number: B01D53/92 ,  B01D53/79 ,  B01D53/90 ,  C07C273/16 ,  Y02C20/10

Abstract: The invention relates to process for the preparation of a urea-comprising aqueous stream, that is suitable for use in a unit for the reduction of NOx in combustion engine exhaust gases, wherein the urea-comprising aqueous stream is separated directly from or after a recovery section in a urea production process and is thereafter diluted with water until the urea-comprising stream comprises 30-35 wt % urea.

Abstract translation: 本发明涉及制备含尿素的含水流的方法，其适用于用于还原内燃机废气中的NOx的单元，其中含尿素的水流直接从回收或从回收后分离 然后用水稀释，直到含尿素流包含30-35重量％的尿素。