公开(公告)号：EP2477961A1

公开(公告)日：2012-07-25

申请号：EP10740669.6

申请日：2010-08-10

Applicant: Stamicarbon B.V.

Inventor： MEESSEN, Jozef Hubert ,  ORFANIDIS, Pantelis

IPC: C07C273/16 ,  C01C1/12 ,  C05C3/00 ,  C05C9/00 ,  C05G3/00

CPC classification number: C05C3/00 ,  B01D53/54 ,  B01D53/58 ,  B01D53/80 ,  B01D2251/506 ,  B01D2257/406 ,  B01D2257/70 ,  C01C1/12 ,  C01C1/22 ,  C05C3/005 ,  C05C9/00 ,  C07C273/16

Abstract: The invention relates to a method for recovery of urea dust and ammonia from a gas stream by contacting said gas stream with an aqueous sulphuric acid solution, thus forming an acid solution of ammonium sulphate and urea, characterized in that the acid solution is concentrated to a melt comprising less than 5 wt% of water, which melt is subsequently transferred into solid particles comprising urea and ammonium sulphate

公开(公告)号：EP2297093B1

公开(公告)日：2012-07-11

申请号：EP09749834.9

申请日：2009-05-19

Applicant: Stamicarbon B.V.

Inventor： GEVERS, Lambertus Wilhelmus ,  MEESSEN, Jozef Hubert ,  MENNEN, Johannes Henricus

IPC: C07C273/00 ,  C07C273/04

CPC classification number: C07C273/04

Abstract: Process for the production of urea from ammonia and carbon dioxide in a urea plant containing a high-pressure synthesis section comprising at least one reactor section, a stripper and a condenser wherein all the high-pressure equipment is placed in a low position, wherein the height of the high-pressure section is less than 35 m from ground level and at least one of the reactor sections comprises means for the separate distribution of ammonia in the bottom of the reactor section.