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公开(公告)号：UA100560C2
公开(公告)日：2013-01-10
申请号：UAA201015113
申请日：2009-05-19
Applicant: STAMICARBON
IPC: C07C273/00 , C07C273/04
Abstract: Способпроизводствамочевиныизаммиакаи диоксидауглероданазаводепопроизводствумочевины, которыйосуществляютв секциисинтезапривысокомдавлении, котораясодержитпокрайнеймереоднусекциюреактора, стриппери конденсатор, причемвсеоборудованиевысокогодавленияразмещаютв низкомположении, причемвысотасекциивысокогодавлениясоставляетменьшечемотуровняземли, ипокрайнеймереоднаизсекцийреакторасодержитсредство, вкоторомотдельнораспределяютаммиакв объемесекцииреактора.
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公开(公告)号：PL2297093T3
公开(公告)日：2012-12-31
申请号：PL09749834
申请日：2009-05-19
Applicant: STAMICARBON
IPC: C07C273/00 , C07C273/04
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公开(公告)号：AU2009231478B2
公开(公告)日：2012-11-29
申请号：AU2009231478
申请日：2009-03-30
Applicant: STAMICARBON
Inventor： MENNEN JOHANNES HENRICUS
IPC: C07C273/04 , B01J12/00 , C07C275/06
Abstract: Process for increasing the capacity of an existing urea plant comprising a high-pressure urea synthesis section and one or more recovery sections, wherein next to the existing urea plant a urea production unit, comprising a high-pressure urea synthesis section and a medium-pressure recovery section, is installed, wherein a urea-containing stream is produced from ammonia and carbon dioxide and the urea-containing stream is sent to the existing urea plant where the urea-containing stream is further purified in the low-pressure recovery section.
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公开(公告)号：CA2830648A1
公开(公告)日：2012-10-04
申请号：CA2830648
申请日：2012-03-30
Applicant: STAMICARBON
Inventor： MENNEN JOHANNES HENRICUS , CUCCHIELLA BARBARA
IPC: 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.
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Patent Agency Ranking
公开(公告)号：CA2779841A1
公开(公告)日：2011-07-14
申请号：CA2779841
申请日：2011-01-07
Applicant: STAMICARBON
Inventor： MENNEN JOHANNES HENRICUS
IPC: C07C273/04
Abstract: The invention relates to a process for producing urea wherein an aqueous urea solution, leaving a urea reaction zone is fed to a stripper, where a part of the non-converted ammonia and carbon dioxide is separated from the aqueous urea solution, which solution leaves the stripper to a first recovery section of one or more serial recovery sections and is subsequently fed to one or more urea concentration sections, wherein the urea solution leaving the stripper is subjected to an adiabatic expansion, thus creating a vapor and a liquid, which are separated before the liquid enters a first recovery section and the vapor is condensed. The invention further relates to a urea plant comprising a stripper and a first recovery section, wherein an adiabatic expansion valve and a liquid/gas separator is provided between the stripper and the first recovery section.
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公开(公告)号：AU2009249693A1
公开(公告)日：2009-11-26
申请号：AU2009249693
申请日：2009-05-19
Applicant: STAMICARBON
IPC: 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 two reactor sections, a stripper and a condenser, and a recovery section, wherein in the first reactor section a first synthesis solution is formed that is fed to the second reactor section; fresh carbon dioxide is fed to the second reactor section and in the second reactor section a second synthesis solution is formed that is fed to the stripper, wherein the second synthesis solution is stripped with the use of carbon dioxide as stripping gas and the mixed gas stream obtained in the stripper is sent to the condenser together with fresh ammonia and a carbamate stream, whereafter the condensate that is formed in the condenser is fed to the first reactor section and the urea stream that is obtained in the stripper is further purified in the recovery section, wherein the flow of the first synthesis solution from the first reactor section to the second reactor section, the flow of the second synthesis solution from the second reactor section to the stripper, the flow of the mixed gas stream from the stripper to the condenser and of the condensate from the condenser to the first reactor section is a gravity flow.
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公开(公告)号：AU2009249691A1
公开(公告)日：2009-11-26
申请号：AU2009249691
申请日：2009-05-19
Applicant: STAMICARBON
IPC: C07C273/00 , 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.
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公开(公告)号：AU2002303036B2
公开(公告)日：2008-01-10
申请号：AU2002303036
申请日：2002-04-24
Applicant: STAMICARBON
Inventor： MENNEN JOHANNES HENRICUS
IPC: C07C273/04 , B01J12/02
Abstract: Process for the preparation of urea from ammonia and carbon dioxide in which a urea synthesis solution containing urea, ammonium carbamate and unconverted ammonia is formed in a synthesis zone, a part of the urea synthesis solution being transferred from the synthesis zone to a medium-pressure treatment zone operating at a pressure of 1-4 MPa, and a gas stream from the medium-pressure treatment zone being absorbed into the low-pressure ammonium carbamate solution from the urea recovery section.
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公开(公告)号：AU2001234252B2
公开(公告)日：2005-07-14
申请号：AU2001234252
申请日：2001-01-29
Applicant: STAMICARBON
Inventor： MENNEN JOHANNES HENRICUS
IPC: B01J3/04 , B01J10/00 , C07C273/04 , B01J012/00
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