公开(公告)号：EP3083571A1

公开(公告)日：2016-10-26

申请号：EP14825459.2

申请日：2014-12-16

Applicant: Stamicarbon B.V.

Inventor： MENNEN, Johannes Henricus

IPC: C07D251/60 ,  C07C273/12

CPC classification number: C07D251/60 ,  B01J19/245 ,  B01J2219/00103 ,  B01J2219/24 ,  C07C273/12 ,  C07D251/62

Abstract: Disclosed is a process for the integrated production of urea and melamine. A urea production zone produces a urea synthesis stream comprising urea, water and ammonium carbamate. This stream is subjected to processing, preferably involving stripping, so as to separate an aqueous urea stream from residual dissociated carbamate vapor comprising ammonia, carbon dioxide, and water. The urea is fed to a melamine synthesis zone and subjected to melamine forming conditions so as to form melamine and off-gas comprising carbon dioxide and ammonia. The dissociated carbamate vapor and the melamine off-gas are subjected to combined condensation so as to form a dilute melamine off-gas condensate.

Abstract translation: 公开了一种尿素和三聚氰胺的综合生产方法。 尿素生产区产生包含尿素，水和氨基甲酸铵的尿素合成物流。 对该料流进行处理，优选涉及汽提，以便将含水的尿素流与包含氨，二氧化碳和水的残留的解离的氨基甲酸酯蒸气分离。 将尿素进料到三聚氰胺合成区，并进行三聚氰胺形成条件，以形成包含二氧化碳和氨的三聚氰胺和废气。 解离的氨基甲酸盐蒸汽和三聚氰胺废气进行组合冷凝，以形成稀的三聚氰胺尾气冷凝物。

公开(公告)号：EP2766341A1

公开(公告)日：2014-08-20

申请号：EP12778823.0

申请日：2012-10-12

Applicant: Stamicarbon B.V.

Inventor： MENNEN, Johannes Henricus

IPC: C07C273/16 ,  C07C273/02 ,  B01J2/22

CPC classification number: C07C273/16 ,  B01J2/22 ,  B01J2/30 ,  B29C43/006 ,  B29K2075/02 ,  C05C9/005 ,  C05C9/02 ,  C07C273/14 ,  Y10T29/49716

Abstract: Disclosed is a method for urea finishing. A urea solution is subjected to crystallization and, other than in conventional processes, the urea crystals are shaped by exerting mechanical force onto them. Thus, the conventional prilling or granulation finishing steps can be avoided, and so are the corresponding emissions of ammonia and/or dust. The crystallization comprises a flash crystallization. The invention also pertains to the urea particles obtainable by the process, to a urea plant, and to a method of modifying an existing urea plant.

Abstract translation: 公开了一种尿素整理方法。 尿素溶液经过结晶，除常规方法之外，尿素晶体通过施加机械力而成形。 因此，可以避免常规的造粒或造粒整理步骤，以及氨和/或粉尘的相应排放。 结晶包括闪晶结晶。 本发明还涉及通过该方法获得的尿素颗粒，尿素装置以及改进现有尿素装置的方法。

公开(公告)号：EP2744780A1

公开(公告)日：2014-06-25

申请号：EP12750881.0

申请日：2012-08-17

Applicant: Stamicarbon B.V.

Inventor： MENNEN, Johannes Henricus

IPC: C07C273/04

CPC classification number: C07C273/04 ,  Y10T29/49826

Abstract: The invention relates to a method for urea production and to a urea production plant wherein ammonia emission in the final step of forming urea prills is reduced. In the method, the concentration of a urea solution is performed in at least three consecutive concentration steps and the residence time of urea melt leaving a last concentrator to the prilling tower is minimised. This can be achieved by placing the last concentrator in adjacency with a urea melt inlet of the prilling tower, such as above the prilling tower. In this way, the ammonia emission in the prilling tower can be reduced by as much as 50% compared to the conventional urea production plants. The invention further relates to a method for reducing ammonia emission in the prilling tower of an existing urea production plant.

公开(公告)号：EP2467203A2

公开(公告)日：2012-06-27

申请号：EP10739376.1

申请日：2010-08-09

Applicant: Stamicarbon B.V.

Inventor： MENNEN, Johannes Henricus ,  EIJKENBOOM, Joseph Maria Gerardus

IPC: B01J19/24 ,  B01J19/00 ,  B01J10/00 ,  B01D19/00 ,  B01D1/06 ,  C01C1/04

CPC classification number: C07C273/04 ,  B01J10/00 ,  B01J19/0053 ,  B01J19/2415 ,  B01J2219/00081

Abstract: An apparatus used for the decomposition of non-converted ammonium carbamate in a supplied urea solution in a urea stripping synthesis section. The apparatus comprises a number of heat exchanger tubes between a top chamber and a bottom chamber, a liquid distributor mounted on each heat exchanger tube and a gas/ liquid separator together with a perforated basket at the centre of the top chamber.

公开(公告)号：EP2297093A1

公开(公告)日：2011-03-23

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.

公开(公告)号：EP3436430B1

公开(公告)日：2020-09-16

申请号：EP17718144.3

申请日：2017-03-30

Applicant: Stamicarbon B.V.

Inventor： COLOMA GONZÁLEZ, Juan ,  DIELTJENS, Luc Louis Maria ,  MENNEN, Johannes Henricus

IPC: C07C273/04 ,  B01J19/24

公开(公告)号：EP3083571B1

公开(公告)日：2019-02-20

申请号：EP14825459.2

申请日：2014-12-16

Applicant: Stamicarbon B.V.

Inventor： MENNEN, Johannes Henricus

IPC: C07D251/60 ,  C07C273/12

公开(公告)号：EP3436430A1

公开(公告)日：2019-02-06

申请号：EP17718144.3

申请日：2017-03-30

Applicant: Stamicarbon B.V.

Inventor： COLOMA GONZÁLEZ, Juan ,  DIELTJENS, Luc Louis Maria ,  MENNEN, Johannes Henricus

IPC: C07C273/04 ,  B01J19/24

Abstract: The invention is directed to a urea plant with a high pressure synthesis section and a recovery section. The high pressure synthesis section comprises a reactor, a stripper and a condenser, wherein the reactor operates at a higher pressure than the stripper and the condenser. The plant further includes a compression unit between the condenser and the reactor. The compression unit utilizes mechanical energy recovered from a decompression unit positioned downstream of the stripper and upstream of the recovery section.

公开(公告)号：EP2691365B1

公开(公告)日：2017-04-19

申请号：EP12712413.9

申请日：2012-03-30

Applicant: Stamicarbon B.V.

Inventor： MENNEN, Johannes Henricus ,  CUCCHIELLA, Barbara

IPC: C07C273/04 ,  B01J19/24

CPC classification number: C07C273/04 ,  B01J19/24

Abstract: Disclosed is a method for the production of urea allowing a substantial reduction, even down to zero, of the continuous emission of ammonia conventionally resulting from such a process. According to a preferred embodiment of the invention, the urea-forming reaction from carbon dioxide and ammonia is conducted in a synthesis section that does not require passivation by oxygen. As a result of the absence of oxygen, a hydrogen-rich gas stream results from the synthesis section, that can be used as a fuel in an incinerator. In the incinerator, ammonia-comprising gas streams from the urea production process are combusted.

公开(公告)号：EP2844640A1

公开(公告)日：2015-03-11

申请号：EP13724000.8

申请日：2013-05-02

Applicant: Stamicarbon B.V.

Inventor： MENNEN, Johannes Henricus ,  MEESSEN, Jozef Hubert

IPC: C07C273/04

CPC classification number: C07C273/04 ,  B01D5/006 ,  B01D5/009 ,  B01D47/00 ,  B01J10/00 ,  B23P15/26 ,  Y10T29/49352

Abstract: Disclosed is a plant for the production of urea. The plant comprises conventional sections for synthesis and recovery, for evaporation and condensation, for urea finishing, and for dust scrubbing. According to the invention, an additional evaporation and condensation loop is introduced from and to the dust scrubbing section. This loop results in a more favorable energy consumption of the plant.