Patents by Inventor Kees Jonckers
Kees Jonckers has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7407532Abstract: The invention relates to a process for separating NH3 from a mixture containing NH3, CO2 and H2O which comprises an NH3 rectification step carried out in a NH3 separation device to which one or more streams containing NH3, CO2 and H2O including the mixture, are supplied, with a stream consisting substantially of gaseous NH3 being formed in the NH3 separation device, separated from the mixture and discharged. In the process according to the invention a condensation step is carried out on at least one of the stream consisting substantially of gaseous NH3 or the one or more streams containing NH3, CO2 and H2O supplied to the NH3 separation device, in which at least a part of the existing CO2 is converted to a liquid phase.Type: GrantFiled: January 9, 2004Date of Patent: August 5, 2008Assignee: DSM IP Assets B.V.Inventors: Andreas Johannes Biermans, Kees Jonckers, Johannes Henricus Mennen, Nora Anna De Wit, Herbert Willem Gerrit Hooijkaas, Bastiaan Renè Agnes Marie Van De Kerkhove
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Publication number: 20060112821Abstract: The invention relates to a process for separating NH3 from a mixture containing NH3, CO2 and H2O which comprises an NH3 rectification step carried out in a NH3 separation device to which one or more streams containing NH3, CO2 and H2O, including the mixture, are supplied, with a stream consisting substantially of gaseous NH3 being formed in the NH3 separation device, separated from the mixture and discharged. In the process according to the invention a condensation step is carried out on at least one of the stream consisting substantially of gaseous NH3 or the one or more streams containing NH3, CO2 and H2O supplied to the NH3 separation device, in which at least a part of the existing CO2 is converted to a liquid phase.Type: ApplicationFiled: January 9, 2004Publication date: June 1, 2006Inventors: Andreas Biermans, Kees Jonckers, Johannes Mennen, Nora Wit De, Herbert Hooijkaas, Bastiaan Kerkhove Van De
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Patent number: 6921838Abstract: The invention relates to a process for the preparation of urea from ammonia and carbon dioxide with the application of a synthesis reactor, a condenser, a scrubber and a stripper, wherein an outlet of the stripper, through which a gas stream is discharged during operation, is functionally connected to the inlet of the condenser and to the inlet of the reactor and wherein an outlet of the condenser is functionally connected to an inlet of the scrubber and wherein the obtained reaction mixture is stripped in the stripper in countercurrent with one of the starting materials, wherein the division of the gas stream from the stripper to the condenser and the reactor is completely or partly controlled by one or more controlling elements present in the non-common part of the functional connection between the outlet of the stripper and the inlet of the condenser and/or the inlet of the reactor.Type: GrantFiled: September 26, 2002Date of Patent: July 26, 2005Assignee: DSM IP Assets B.V.Inventors: Kees Jonckers, Jozef Hubert Meessen
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Patent number: 6881862Abstract: The invention relates to a process for the preparation of urea from ammonia and carbon dioxide, which preparation takes places wholy or partly with the application of a synthesis reactor, a condenser, a scrubber and a stripper, wherein an outlet of the stripper, through which a gas stream is discharged during operation, is functionally connected to the inlet of the condenser and to the inlet of the reactor and wherein an outlet of the condenser is functionally connected to an inlet of the scrubber and wherein the obtained reaction mixture is stripped in the stripper in countercurrent with one of the starting materials, wherein the gas stream coming from the top of the submerged condenser is subjected to an extra washing step before this gas stream is supplied to the high-pressure scrubber. The submerged condenser operating as such may be for example a submerged condenser of horizontal or vertical design of a falling-film high-pressure carbamate condenser transformed into a submerged condenser.Type: GrantFiled: September 26, 2002Date of Patent: April 19, 2005Assignee: DSM IP Assets B.V.Inventors: Jozef Hubert Meessen, Kees Jonckers
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Patent number: 6858755Abstract: Process for the preparation of urea from ammonia and carbon dioxide, wherein the waste gases released at virtually atmospheric pressure in a urea plant are compressed by an ejector driven by the waste gas from the high-pressure synthesis and are supplied to a medium-pressure absorber. The pressure of the waste gases is increased by 0.15-1 MPa.Type: GrantFiled: November 23, 2001Date of Patent: February 22, 2005Assignee: DSM N.V.Inventors: Jozef Hubert Meessen, Kees Jonckers
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Publication number: 20050038293Abstract: The invention relates to a process for the preparation of urea from ammonia and carbon dioxide with the application of a synthesis reactor, a condenser, a scrubber and a stripper, wherein an outlet of the stripper, through which a gas stream is discharged during operation, is functionally connected to the inlet of the condenser and to the inlet of the reactor and wherein an outlet of the condenser is functionally connected to an inlet of the scrubber and wherein the obtained reaction mixture is stripped in the stripper in countercurrent with one of the starting materials, wherein the division of the gas stream from the stripper to the condenser and the reactor is completely or partly controlled by one or more controlling elements present in the non-common part of the functional connection between the outlet of the stripper and the inlet of the condenser and/or the inlet of the reactor.Type: ApplicationFiled: September 26, 2002Publication date: February 17, 2005Inventors: Kees Jonckers, Jozef Meessen
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Patent number: 6855846Abstract: Process for the preparation of urea from ammonia and carbon dioxide in which all or part of the liquid ammonia needed for the process is supplied to the high-pressure scrubber in such a way that it is in direct contact with the other streams supplied to this scrubber. In particular in such a way that there is direct contact between the liquid ammonia and the off-gases transferred to the high-pressure scrubber from the urea synthesis reactor. More in particular in such a way that there is direct contact between the liquid ammonia and the off-gases transferred to the high-pressure scrubber from the urea reactor and with the carbamate stream, which is transferred from the low-pressure urea recovery section.Type: GrantFiled: November 1, 2001Date of Patent: February 15, 2005Assignee: DSM IP Assets B.V.Inventors: Andreas Johannes Biermans, Kees Jonckers
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Publication number: 20050004397Abstract: The invention relates to a process for the preparation of urea from ammonia and carbon dioxide, which preparation takes places wholy or partly with the application of a synthesis reactor, a condenser, a scrubber and a stripper, wherein an outlet of the stripper, through which a gas stream is discharged during operation, is functionally connected to the inlet of the condenser and to the inlet of the reactor and wherein an outlet of the condenser is functionally connected to an inlet of the scrubber and wherein the obtained reaction mixture is stripped in the stripper in countercurrent with one of the starting materials, wherein the gas stream coming from the top of the submerged condenser is subjected to an extra washing step before this gas stream is supplied to the high-pressure scrubber. The submerged condenser operating as such may he for example a submerged condenser of horizontal or vertical design of a falling-film high-pressure carbamate condenser transformed into a submerged condenser.Type: ApplicationFiled: September 26, 2002Publication date: January 6, 2005Inventors: Josef Hubert, Kees Jonckers
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Publication number: 20040054229Abstract: Process for the preparation of urea from ammonia and carbon dioxide, wherein the waste gases released at virtually atmospheric pressure in a urea plant are compressed by an ejector driven by the waste gas from the high-pressure synthesis and are supplied to a medium-pressure absorber. The pressure of the waste gases is increased by 0.15-1 MPa.Type: ApplicationFiled: October 21, 2003Publication date: March 18, 2004Inventors: Jozef Hubert Meessen, Kees Jonckers
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Publication number: 20040054228Abstract: Process for the preparation of urea from ammonia and carbon dioxide in which all or part of the liquid ammonia needed for the process is supplied to the high-pressure scrubber in such a way that it is in direct contact with the other streams supplied to this scrubber. In particular in such a way that there is direct contact between the liquid ammonia and the off-gases transferred to the high-pressure scrubber from the urea synthesis reactor. More in particular in such a way that there is direct contact between the liquid ammonia and the off-gases transferred to the high-pressure scrubber from the urea reactor and with the carbamate stream, which is transferred from the low-pressure urea recovery section.Type: ApplicationFiled: October 6, 2003Publication date: March 18, 2004Inventors: Andreas Johannes Biermans, Kees Jonckers
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Patent number: 6392096Abstract: The invention relates to a process for the preparation of urea from ammonia and carbon dioxide, the preparation being effected in whole or in part in a vertical combi-reactor. The gas stream leaving the stripper is fed to the condenser section of a vertical combi-reactor in which this gas stream is wholly or partially condensed in the carbamate stream which is transferred from the scrubber section to the condenser section via a downcomer. Ammonia and carbon dioxide are partially converted into urea in this condenser section of the combi-reactor. The urea conversion is completed in the reaction section of the combi-reactor.Type: GrantFiled: July 11, 2001Date of Patent: May 21, 2002Assignee: DSM N.V.Inventors: Johannes H Mennen, Kees Jonckers
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Publication number: 20020035292Abstract: The invention relates to a process for the preparation of urea from ammonia and carbon dioxide, the preparation being effected in whole or in part in a vertical combi-reactor. The gas stream leaving the stripper is fed to the condenser section of a vertical combi-reactor in which this gas stream is wholly or partially condensed in the carbamate stream which is transferred from the scrubber section to the condenser section via a downcomer. Ammonia and carbon dioxide are partially converted into urea in this condenser section of the combi-reactor. The urea conversion is completed in the reaction section of the combi-reactor.Type: ApplicationFiled: July 11, 2001Publication date: March 21, 2002Inventors: Johannes H. Mennen, Kees Jonckers
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Publication number: 20010041813Abstract: Process for the preparation of urea from ammonia and carbon dioxide in which a submerged condenser is used as high-pressure carbamate condenser and the urea synthesis solution leaving the submerged condenser is transferred to the reactor by means of an ejector. In particular, this relates to a process in which a pool condenser is used as submerged condenser.Type: ApplicationFiled: December 29, 2000Publication date: November 15, 2001Inventors: Kees Jonckers, Jozef H. Meessen
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Patent number: 6165315Abstract: A reactor for the synthesis of urea from ammonia and carbon dioxide at elevated temperature and pressure is provided with perforated reactor trays in which at least a pair of spaced part perforated reactor trays each have at least one opening at least a distance closer towards the periphery than the center, such as on or near the edge of a perforated reactor tray, and each of such pair perforated reactor trays is provided with a tube with a height of 50-500 mm located on and depending from an underside, e.g. bottom side in a column reactor, of each of such pair perforated reactor tray. The tubes extend to no more than 1/3 of the distance between two adjacent reactor trays.Type: GrantFiled: May 3, 1999Date of Patent: December 26, 2000Assignee: DSM N.V.Inventors: Kees Jonckers, Hendrik F. Perree
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Patent number: 6118023Abstract: Method for increasing the capacity of an existing urea process, the existing urea process comprising a reactor (R), a pressure-reduction section (SC) and a urea-recovery section (U), characterized in that(i) a stripping column (S) is added, in which ammonium carbamate from the reaction mixture is stripped with carbon dioxide or is thermally stripped at almost the same elevated pressure, resulting in a gaseous mixture (G1) and a liquid mixture (M4), which liquid mixture (M4) is fed to the pressure-reduction section (SC),(ii) a condenser (C) is added, which is fed with the gaseous mixture (G1), ammonia and optionally carbon dioxide, in which the gaseous mixture (G1) is condensed at almost the same elevated reactor pressure (P) and at least 30% of the equilibrium amount of urea obtainable under the condensation conditions is furthermore formed, in which a liquid mixture containing urea, water and ammonium carbamate (MS) is formed, which mixture is fed to the bottom of the existing reactor (R), and a gaseous mixtType: GrantFiled: January 9, 1998Date of Patent: September 12, 2000Assignee: DSM N.V.Inventors: Kees Jonckers, Hendrik F. Perree
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Patent number: 5767313Abstract: The present invention relates to a process and apparatus for the preparation of urea, and in particular for urea obtained from ammonium carbamate formulated from carbon dioxide and ammonia at a pressure of about 125 bar to about 350 bar in a urea synthesis solution in a urea reactor. The reactor defines a horizontally arranged condensation zone and contains a heat exchanger. According to this process, NH.sub.3 and CO.sub.2 are supplied to the reactor and are largely absorbed into the urea synthesis solution. A substantial portion of the heat formed in the condensation is discharged by means of the heat exchanger. The residence time of the urea synthesis solution in the reactor preferably is selected so that at least about 85% of the theoretically obtainable amount of urea is prepared. Thereafter, the urea synthesis solution can be processed into a urea solution or solid urea.Type: GrantFiled: May 23, 1996Date of Patent: June 16, 1998Assignee: DSM N.V.Inventor: Kees Jonckers
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Patent number: 4866207Abstract: An improved process and apparatus for the concentration of an aqueous urea solution by evaporation of water in a single pass shell and tube heat exchanger having a substantially vertical tube bundle within the shell. The aqueous urea solution is introduced into the top of the vertical tube bundle and caused to fall as a film down the inside of said tubes whereby it is heated and water evaporated therefrom to form a concentrated urea solution. The heat for this evaporation is provided by condensing at least a part of a gas mixture containing NH.sub.3, CO.sub.2 and H.sub.2 O in the shell side of the heat exchanger. This gas mixture is introduced into a lower portion of the shell wherein it is caused to flow upwardly in shell in contact with said tube bundle, counter-current to the flow of the aqueous urea solution within the tubes whereby heat from said condensation is transferred to said aqueous urea solution flowing down the inside of the tubes.Type: GrantFiled: January 23, 1987Date of Patent: September 12, 1989Assignee: Stamicarbon B.V.Inventors: Kees Jonckers, Henk C. Burks
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Patent number: 4801747Abstract: An improved process for the preparation of urea from carbon dioxide and excess ammonia at an elevated temperature and pressure to form a urea synthesis solution containing uncoverted ammonium carbamate and free ammonia. A portion of the ammonium carbamate contained in the urea synthesis solution is decomposed in a first decomposition zone by the supply of heat, and the first gas mixture thus obtained is separated and at least partially condensed in a first condensation zone. The residual area solution is heated in a second decomposition zone maintained at a pressure of between about 4 and 40 bar thereby decomposing a further portion of ammonium carbamate and the second gas mixture thus obtained is separated from the second residual urea containing stream. This second residual area stream is introduced into a further decomposition zone wherein remaining ammonium carbamate is substantially removed, and a third gas mixture thereby formed is processed to form a dilute aqueous ammonium carbamate solution.Type: GrantFiled: October 6, 1986Date of Patent: January 31, 1989Assignee: Stamicarbon B.V.Inventor: Kees Jonckers
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Patent number: 4540813Abstract: A process for the preparation of urea from ammonia and carbon dioxide at an elevated temperature and pressure having a reaction zone and a stripping zone. In the reaction zone, carbon dioxide and a portion of the ammonia are converted to ammonium carbamate, and a portion of the ammonium carbamate is converted to urea, the combined conversions resulting in a net formation of heat. In the stripping zone, a urea product stream containing unconverted ammonium carbamate is heated by heat exchange with the reaction zone to decompose a portion of the ammonium carbamate. In the reaction zone, the conversion of ammonium carbamate into urea is continued until the quantity of urea formed is at least 50 percent of that quantity of urea that would be obtained at equilibrium under the reaction conditions present in the reaction zone.Type: GrantFiled: May 2, 1983Date of Patent: September 10, 1985Assignee: Unie van Kunstmestfabrieken B.V.Inventors: Petrus J. M. van Nassau, Andreas J. Biermans, Kees Jonckers, Mario G. R. T. de Cooker
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Patent number: 4539077Abstract: An improved process for the preparation of urea from carbon dioxide and excess ammonia at elevated temperature and pressure. The urea solution from the urea synthesis zone is heated and stripped at an elevated pressure to decompose a portion of the ammonium carbamate contained therein and the ammonium and carbon dioxide containing off-gas produced is condensed in a first condensation zone. The stripped urea solution is heated at a reduced pressure in a decomposition zone to decompose a further portion of ammonium carbamate, and the ammonia and carbon dioxide containing off-gas thereby produced is condensed in a second condensation zone to form an aqueous ammonium carbamate solution.Type: GrantFiled: April 21, 1983Date of Patent: September 3, 1985Assignee: Unie van Kunstmestfabrieken B.V.Inventors: Kees Jonckers, Petrus J. M. Van Nassau, Andreas J. Biermans