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公开(公告)号：AU2010251315B2
公开(公告)日：2015-01-22
申请号：AU2010251315
申请日：2010-05-11
Applicant: STAMICARBON
Abstract: The present invention relates to a process for the production of granules from a liquid composition with a decreased dust production, said process comprising the steps of : applying the liquid composition onto solid particles that are kept in a continuous movement by a gas stream in a granulation zone of an oblong granulator, thereby depositing and solidifying said liquid composition around said solid particles to increase the size of the particles and thereby form grown solid particles; discharging a stream of said grown solid particles from the granulation zone, dividing, in a size-sorting apparatus, said stream of said grown solid particles into individual streams based on the size of said grown solid particles to thereby produce streams of undersized, oversized, and desired-sized grown solid particles; transferring said stream of said oversized grown solid particles to a size-reducing apparatus; crushing said stream of said oversized grown solid particles in said size-reducing apparatus, thereby reducing the particle size of said oversized grown solid particles and thereby producing a stream of crushed solid particles wherein that said stream of crushed solid particles is introduced in the granulator at a place below the place where the gas stream leaves the granulator.
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公开(公告)号：MY153120A
公开(公告)日：2014-12-31
申请号：MYPI20105414
申请日：2009-05-19
Applicant: STAMICARBON
IPC: C07C273/00
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：UA101500C2
公开(公告)日：2013-04-10
申请号：UAA201015112
申请日：2009-05-19
Applicant: STAMICARBON
IPC: C07C273/04
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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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Patent Agency Ranking
公开(公告)号：CA2774246A1
公开(公告)日：2011-03-24
申请号：CA2774246
申请日：2010-08-10
Applicant: STAMICARBON
Inventor： MEESSEN JOZEF HUBERT , ORFANIDIS PANTELIS
IPC: C07C273/16 , C01C1/12 , C05C3/00 , C05C9/00 , C05G3/00
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.
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公开(公告)号：CA2762166A1
公开(公告)日：2010-11-25
申请号：CA2762166
申请日：2010-05-11
Applicant: STAMICARBON
Abstract: The present invention relates to a process for the production of granules from a liquid composition with a decreased dust production, said process comprising the steps of : applying the liquid composition onto solid particles that are kept in a continuous movement by a gas stream in a granulation zone of an oblong granulator, thereby depositing and solidifying said liquid composition around said solid particles to increase the size of the particles and thereby form grown solid particles; discharging a stream of said grown solid particles from the granulation zone, dividing, in a size-sorting apparatus, said stream of said grown solid particles into individual streams based on the size of said grown solid particles to thereby produce streams of undersized, oversized, and desired-sized grown solid particles; transferring said stream of said oversized grown solid particles to a size-reducing apparatus; crushing said stream of said oversized grown solid particles in said size-reducing apparatus, thereby reducing the particle size of said oversized grown solid particles and thereby producing a stream of crushed solid particles wherein that said stream of crushed solid particles is introduced in the granulator at a place below the place where the gas stream leaves the granulator.
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公开(公告)号：MY140851A
公开(公告)日：2010-01-29
申请号：MYPI20030081
申请日：2003-01-10
Applicant: STAMICARBON
Inventor： MEESSEN JOZEF HUBERT
IPC: C07C273/04
Abstract: PROCESS FOR THE PREPARATION OF UREA FROM CARBON DIOXIDE AND AMMONIA BY MEANS OF A UREA STRIPPING PROCESS, COMPRISING A HIGH-PRESSURE STRIPPER AND A HIGH-PRESSURE CONDENSER, WHEREBY A UREA SYNTHESIS SOLUTION IS FORMED, AND WHEREIN THE STEAM CONDENSATE THAT FROM DURING HIGH-PRESSURE STRIPPING OF THE UREA SYNTHESIS SOLUTION IS UTILIZED FOR MEDIUM-PRESSURE DECOMPOSITION OF THE AMMONIUM CARBAMATE IN THE UREA SYNTHESIS SOLUTION, CHARACTERIZED IN THAT A COMBINATION OF THE STEAM CONDDENSATE AND STEAM A, WHICH FORMS IN THE HIGH-PRESSURE CONDENSER, IS USER FOR MEDIUM-PRESSURE DECOMPOSITION, WITH THE HIGH-PRESSURE CONDENSER BEING A SUBMERGED CONDENSER. THE INVENTION ALSO RELATES TO A PROCESS FOR IMPROVING A UREA PLANT COMPRISING A THERMAL STRIPPING PROCESS.
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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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