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公开(公告)号：US20150322000A1
公开(公告)日：2015-11-12
申请号：US14655330
申请日：2013-12-27
Applicant: STAMICARBON B.V.
IPC: C07C273/04 , B01J19/24
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。
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公开(公告)号：US20190015811A1
公开(公告)日：2019-01-17
申请号：US15576214
申请日：2017-03-30
Applicant: STAMICARBON B.V.
IPC: B01J19/18 , B01D5/00 , C07C273/04 , C07C275/02
CPC classification number: B01J19/1837 , B01D3/06 , B01D3/14 , B01D5/006 , B01D2257/406 , B01D2257/504 , B01J19/24 , B01J2219/00006 , B01J2219/00018 , B01J2219/00024 , B01J2219/00038 , B01J2219/0004 , B01J2219/00051 , B01J2219/00087 , B01J2219/00092 , B01J2219/00162 , C07C273/04 , C07C275/02 , Y02P20/582
Abstract: Disclosed is a urea plant wherein, in deviation from conventional plants, a high-pressure synthesis section is operated with two different pressures. The synthesis section comprises a reactor, which is operated under a first high pressure. The synthesis section also comprises a stripper and a condenser, both operated at substantially the same second high pressure. In accordance with the invention, the first pressure is substantially higher than the second pressure. The disclosed plant particularly comprises a compression unit capable of converting a pressure difference into work, or more specifically, mechanical energy for compression. This compression unit is positioned between a liquid outlet of the condenser and a liquid inlet of the reactor, and in fluid communication therewith. In order to make use of a pressure drop (expansion as a result of a liquid being depressurized), said compression unit is configured to obtain compression energy from one or more events in the urea production process (i.e., at one or more points in the urea production plant), at which a loss of energy occurs, such as decompression of a high energy stream. Typically, the compression unit is thereby configured to utilize mechanical energy recovered from a decompression unit positioned downstream of the stripper and upstream of the recovery section.
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公开(公告)号：US20170326521A1
公开(公告)日：2017-11-16
申请号：US15669818
申请日：2017-08-04
Applicant: Stamicarbon B.V.
Inventor： Luc Louis Maria DIELTJENS
IPC: B01J12/00 , C07C273/04
CPC classification number: B01J12/005 , B01J12/00 , C07C273/04 , Y02P20/142
Abstract: The invention relates to a urea plant with a CO2 and a NH3 feed, which comprises a purge line, characterized in that the purge line is connected with a fuel gas input line of a utility plant or an NH3 plant.
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公开(公告)号：US20150343409A1
公开(公告)日：2015-12-03
申请号：US14655680
申请日：2013-12-27
Applicant: STAMICARBON B.V.
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.
Abstract translation: 公开了提高现有尿素装置的能力的方法。 关于尿素装置的常规部件，包括包含高压氨基甲酸酯冷凝器和反应器的合成部分和回收部分，该方法包括在回收部分和高压氨基甲酸铵冷凝器之间安装另外的反应器。 附加的反应器优选地与喷射器结合安装，以允许附加反应器的地面放置。
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