公开(公告)号：US10919846B2

公开(公告)日：2021-02-16

申请号：US16961319

申请日：2019-12-18

Applicant: Stamicarbon B.V.

Inventor： Rahul Patil ,  Fredericus Henricus Maria Buitink

IPC: C07C273/14 ,  C07C273/04 ,  B01J3/04 ,  B01D5/00 ,  B01D3/06 ,  B01D3/00

Abstract: The invention pertains to a urea production process using a high pressure stripper and a low pressure decomposer connected to a low pressure carbamate condenser which is in heat exchanging contact through a wall with a sub-atmospheric decomposer wherein urea solution obtained from the low pressure decomposer is processed.

公开(公告)号：US10315925B2

公开(公告)日：2019-06-11

申请号：US15528708

申请日：2015-11-26

Applicant: Stamicarbon B.V.

Inventor： Johannes Henricus Mennen ,  Fredericus Henricus Maria Buitink ,  Willem Frederik Roos

IPC: C01C1/18 ,  C05C1/00 ,  C05C9/00 ,  B01J19/00 ,  B01J10/00

Abstract: The invention provides a method and a plant for producing urea ammonium nitrate (UAN). The method involves the use of a condensation section, optionally in combination with a medium pressure decomposition section, between the dissociation and neutralization sections. The invention further provides a method of modifying an existing UAN plant. The advantages of the process of the invention are that the emission of CO2 can be reduced, the plant capacity can be increased and the high capital expenditure needed for CO2 compression equipment is reduced.

公开(公告)号：US09914107B2

公开(公告)日：2018-03-13

申请号：US14655680

申请日：2013-12-27

Applicant: Stamicarbon B.V.

Inventor： Fredericus Henricus Maria Buitink ,  Luc Louis Maria Dieltjens

IPC: B01J19/00 ,  B01D3/00 ,  C07C273/04

CPC classification number: B01J19/00 ,  B01D3/009 ,  B01J2219/00024 ,  B01J2219/00027 ,  B01J2219/0004 ,  B01J2219/185 ,  C07C273/04 ,  Y10T29/49718

Abstract: Disclosed is a method of increasing the capacity of an existing urea plant. With reference to the regular components of a urea plant, including a synthesis section comprising a high pressure carbamate condenser and a reactor, and a recovery section, the method comprises installing an additional reactor between the recovery section and the high pressure carbamate condenser. The additional reactor is preferably installed in connection with an ejector, so as to allow ground placement of the additional reactor.

公开(公告)号：US09512069B2

公开(公告)日：2016-12-06

申请号：US14655330

申请日：2013-12-27

Applicant: Stamicarbon B.V.

Inventor： Fredericus Henricus Maria Buitink ,  Luc Louis Maria Dieltjens

IPC: C07C273/04 ,  B01J19/24 ,  B01J19/02

CPC classification number: C07C273/04 ,  B01J19/02 ,  B01J19/24 ,  B01J19/245 ,  B01J2219/00006 ,  B01J2219/00024 ,  B01J2219/00103 ,  B01J2219/00765 ,  B01J2219/0286 ,  B01J2219/24 ,  C07C275/02

Abstract: Disclosed is a urea plant comprising an additional reactor. With reference to the regular components of a urea plant, including a recovery section and a high pressure carbamate condenser, the additional reactor is positioned between the recovery section and the high pressure carbamate condenser. The invention also relates to a process for the synthesis of urea, comprising an additional reaction step converting, at an earlier stage than conventional, recovered carbamate into urea.

Abstract translation: 公开了一种包含另外的反应器的尿素装置。 参考包括回收部分和高压氨基甲酸酯冷凝器的尿素装置的常规部件，附加反应器位于回收部分和高压氨基甲酸酯冷凝器之间。 本发明还涉及一种用于合成尿素的方法，其包括另外的反应步骤，其比在常规方法中将回收的氨基甲酸酯转化成尿素的步骤更好。