Patents Assigned to Stamicarbon B.V.
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Publication number: 20250115547Abstract: Disclosed is a method for the integrated production of two different urea products. One is an aqueous urea solution suitable for use in NOx abatement (generally indicated as Diesel Exhaust Fluid DEF). The other is a solution used as a fertilizer, viz. Urea Ammonium Nitrate (UAN). The production of DEF and UAN are integrated as follows: ammonia recovered from the production of urea is used as a feed to the production of ammonium nitrate. At least part of an aqueous urea stream from urea production, is mixed with ammonium nitrate so as to obtain UAN.Type: ApplicationFiled: December 18, 2024Publication date: April 10, 2025Applicant: STAMICARBON B.V.Inventors: Joey DOBREE, Johannes Henricus MENNEN
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Publication number: 20250108350Abstract: The disclosure pertains in certain embodiments to a plant and to urea production in a plant comprising a valve body comprising an inner body part and an outer body part.Type: ApplicationFiled: March 28, 2023Publication date: April 3, 2025Applicant: STAMICARBON B.V.Inventors: Paul Maria Gerardus Clemens Petrus Hubertus JORISSEN, Alexander Aleida Antonius SCHEERDER, Kirk Anguah OFEI, Alessandro BRUN, Michael SIMML
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Publication number: 20250108349Abstract: The disclosure pertains to a fluidized bed granulation process, for instance for urea melt. An embodiment of the process comprises providing a fluidized bed of the particles in a granulation compartment of the fluidized bed granulator; forming a film of the granulation liquid in the form of a hollow conical frustum projecting into the granulation compartment by supplying the granulation liquid through a first channel of a granulation nozzle; supplying secondary gas stream through a secondary gas channel of the granulation nozzle into the granulation compartment, wherein the secondary gas channel is provided as an annulus around the first channel, wherein the exit of the secondary gas channel is directly exposed to the fluidized bed in the granulation compartment, wherein particles from the fluidized bed are entrained in said secondary gas stream.Type: ApplicationFiled: August 29, 2023Publication date: April 3, 2025Applicant: STAMICARBON B.V.Inventors: Barbara CUCCHIELLA, Juan GONZALEZ COLOMA
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Publication number: 20250091986Abstract: The disclosure pertains to a urea production plant and process using a thermal stripper, wherein the reaction mixture is separated in two parts, wherein the first part is supplied at least in part to the thermal stripper and the second part at least in part bypasses the thermal stripper and is supplied to a medium pressure recovery section.Type: ApplicationFiled: December 5, 2024Publication date: March 20, 2025Applicant: Stamicarbon B.V.Inventor: Wilhelmus Hubertus GEURTS
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Patent number: 12240800Abstract: Embodiments pertain to a urea plant and to the operation of a urea plant in a reduced load mode. In embodiments, two evaporators in parallel are used, connected to a finishing section respectively to a melamine plant.Type: GrantFiled: November 22, 2023Date of Patent: March 4, 2025Assignee: Stamicarbon B.V.Inventors: Branislav Manic, Rahul Patil
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Patent number: 12215071Abstract: The disclosure pertains to a urea production plant and process using a thermal stripper, wherein the reaction mixture is separated in two parts, wherein the first part is supplied at least in part to the thermal stripper and the second part at least in part bypasses the thermal stripper and is supplied to a medium pressure recovery section.Type: GrantFiled: March 19, 2024Date of Patent: February 4, 2025Assignee: Stamicarbon B.V.Inventor: Wilhelmus Hubertus Geurts
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Patent number: 12209061Abstract: Disclosed is a method for the integrated production of two different urea products. One is an aqueous urea solution suitable for use in NOx abatement (generally indicated as Diesel Exhaust Fluid DEF). The other is a solution used as a fertilizer, viz. Urea Ammonium Nitrate (UAN). The production of DEF and UAN are integrated as follows: ammonia recovered from the production of urea is used as a feed to the production of ammonium nitrate. At least part of an aqueous urea stream from urea production, is mixed with ammonium nitrate so as to obtain UAN.Type: GrantFiled: July 7, 2021Date of Patent: January 28, 2025Assignee: STAMICARBON B.V.Inventors: Joey Dobree, Johannes Henricus Mennen
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Patent number: 12186725Abstract: The disclosure pertains to a high pressure carbamate condensation apparatus for a urea plant, a urea plant, and a urea production method. The apparatus comprises a first U-shaped tube bundle arranged around a second U-shaped tube bundle.Type: GrantFiled: May 12, 2023Date of Patent: January 7, 2025Assignee: Stamicarbon B.V.Inventors: Rahul Patil, Lambertus Wilhelmus Gevers, Markus Theodorus Marie Michaƫl Wagemans
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Publication number: 20250002360Abstract: The disclosure pertains to a plant for the production of ammonia. The ammonia is produced from hydrogen obtained by electrolysis of water. The electrolysis is powered by a renewable source of energy, complemented with power obtained from the plant during periods of low or no availability of the renewable energy. To this end, the plant is configured such that it can be operated in a charge configuration (obtaining and storing power) and a discharge configuration (employing said power).Type: ApplicationFiled: September 12, 2023Publication date: January 2, 2025Applicant: STAMICARBON B.V.Inventors: Joey DOBREE, Mahal PATEL, Paolo MAZZARA
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Patent number: 12179138Abstract: Disclosed is a method for the removal of urea dust from the off-gas of a finishing section of a urea production plant. the method comprises subjecting the off-gas to quenching with water so as to produce quenched off-gas. The quenched off-gas is subjected to humidification by mixing said quenched gas stream with a humidification fluid selected from (a) saturated steam and (b) superheated steam mixed with a second aqueous stream, so as to produce a humidified gas stream, subjecting said humidified gas stream to particle separation (i.e., dust removal) by means of a scrubbing liquid in which at least part of the particles in the gas stream are soluble.Type: GrantFiled: January 5, 2021Date of Patent: December 31, 2024Assignee: STAMICARBON B.V.Inventors: Cain Christopher Doherty, Aloysius Mechteldis Emmanuel Schoenmakers
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Publication number: 20240425449Abstract: The disclosure pertains to a urea production process wherein carbamate in a medium pressure (MP) urea solution is decomposed in a tube bundle of a high pressure (HP) carbamate condenser and resulting gas is condensed in indirect heat exchange with urea solution to be heated and wherein a high pressure (HP) stripper is preferably operated with relatively low stripping efficiency.Type: ApplicationFiled: February 21, 2023Publication date: December 26, 2024Applicant: STAMICARBON B.V.Inventor: Rahul Patil
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Patent number: 12151987Abstract: A urea plant and urea production process of the stripping type are provided that are adapted for making Diesel Exhaust Fluid (DEF) or precursor thereof in a DEF production unit downstream of a treatment section. The treatment section receives a part of the urea synthesis stream from a reaction zone, in particular bypassing the HP stripper.Type: GrantFiled: February 14, 2023Date of Patent: November 26, 2024Assignee: STAMICARBON B.V.Inventors: Johan Albert Arno Van Den Tillaart, Eelco Mostert
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Patent number: 12139448Abstract: The disclosure pertains to urea production with, in series, an MP carbamate condenser for condensing at least urea synthesis section off-gas, gas/liquid separation giving a gas stream and a liquid stream, and a second carbamate condenser receiving off-gas from melamine production and said liquid stream.Type: GrantFiled: October 13, 2023Date of Patent: November 12, 2024Assignee: Stamicarbon B.V.Inventors: Solomon Assefa Wassie, Rahul Patil
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Patent number: 12134590Abstract: The disclosure pertains to a coupled plant process for the production of urea and melamine, with a urea synthesis section with HP CO2 stripping, and with a part of the CO2 feed supplied to a recovery section.Type: GrantFiled: November 22, 2023Date of Patent: November 5, 2024Assignee: Stamicarbon B.V.Inventors: Rahul Patil, Johannes Henricus Mennen, Lambertus Wilhelmus Gevers
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Patent number: 12115512Abstract: Embodiments of the disclosure pertain to a chemical reactor comprising a mixing zone comprising first static mixer and a second static mixer both arranged in shell of the reactor, wherein the second static mixer is positioned further from said first inlet than said first static mixer, wherein the second static mixer is adapted for more intimate mixing of fluids in the reaction mixture than the first static mixer.Type: GrantFiled: April 28, 2022Date of Patent: October 15, 2024Assignee: STAMICARBON B.V.Inventors: Ronny Albert Mathijs Pustjens, Johan Albert Arno Van Den Tillaart
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Patent number: 12083468Abstract: Disclosed is a method for the removal of soluble particulate matter from a gas stream, such as urea dust from the off-gas of a finishing section of a urea production plant. The method comprises subjecting the off-gas to at least two quenching stages an aqueous quenching liquid. The quenching liquid used in a first, upstream quench stage, is allowed to have a higher concentration of dissolved particulate matter than the quenching liquid in the second, downstream quench stage. The quenched gas is led through a particle capture zone, typically comprising one or more of a wet scrubber, a Venturi scrubber, and a wet electrostatic precipitator.Type: GrantFiled: March 2, 2022Date of Patent: September 10, 2024Assignee: STAMICARBON B.V.Inventor: Brian Sayre Higgins
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Patent number: 12084406Abstract: The application provides in an aspect a process for producing urea in a urea plant comprising a high pressure synthesis section comprising a reactor, wherein the process comprises reacting NH3 feed and CO2 feed under urea formation conditions in said reactor to form a urea synthesis solution comprising urea, water, carbamate and ammonia, wherein the process further comprises contacting a carbamate-containing liquid stream with an equipment part of said high pressure synthesis section that is made of a ferritic steel alloy.Type: GrantFiled: December 21, 2022Date of Patent: September 10, 2024Assignee: STAMICARBON B.V.Inventors: Kirk Anguah Ofei, Alexander Aleida Antonius Scheerder
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Publication number: 20240279165Abstract: The disclosure pertains to a urea production plant and process using a thermal stripper, wherein the reaction mixture is separated in two parts, wherein the first part is supplied at least in part to the thermal stripper and the second part at least in part bypasses the thermal stripper and is supplied to a medium pressure recovery section.Type: ApplicationFiled: March 19, 2024Publication date: August 22, 2024Applicant: Stamicarbon B.V.Inventor: Wilhelmus Hubertus GEURTS
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Publication number: 20240279164Abstract: The disclosure pertains to a urea production plant and process using a thermal stripper, wherein the reaction mixture is separated in two parts, wherein the first part is supplied at least in part to the thermal stripper and the second part at least in part bypasses the thermal stripper and is supplied to a medium pressure recovery section.Type: ApplicationFiled: March 19, 2024Publication date: August 22, 2024Applicant: Stamicarbon B.V.Inventor: Wilhelmus Hubertus GEURTS
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Publication number: 20240270685Abstract: The disclosure pertains to a coupled plant process for the production of urea and melamine, with a urea synthesis section with HP CO2 stripping, and with a part of the CO2 feed supplied to a recovery section.Type: ApplicationFiled: November 22, 2023Publication date: August 15, 2024Applicant: Stamicarbon B.V.Inventors: Rahul PATIL, Johannes Henricus MENNEN, Lambertus Wilhelmus GEVERS