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公开(公告)号：US12115512B2
公开(公告)日：2024-10-15
申请号：US18257475
申请日：2022-04-28
Applicant: STAMICARBON B.V.
IPC: B01J19/24 , B01J19/00 , C07C273/04
CPC classification number: B01J19/24 , B01J19/0066 , B01J19/249 , C07C273/04 , B01J2219/2458
Abstract: 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.
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公开(公告)号：US20240327358A1
公开(公告)日：2024-10-03
申请号：US18699960
申请日：2023-11-22
Applicant: Stamicarbon B.V.
Inventor： Rahul PATIL
IPC: C07D251/60 , B01D3/06 , B01D53/00 , B01D53/14 , B01D53/18 , C07C273/12 , C07C273/16
CPC classification number: C07D251/60 , B01D3/06 , B01D53/002 , B01D53/1493 , B01D53/18 , C07C273/12 , C07C273/16 , B01D2252/2041 , B01D2252/20431
Abstract: The disclosure pertains to a plant and process for the coupled production of urea and melamine. In an embodiment, a lean carbamate solution is supplied from the melamine production section to a recovery section of the urea production section. In an embodiment, enriched carbamate solution from the urea production section is supplied to an off-gas condenser of the melamine production section.
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公开(公告)号：US20240261751A1
公开(公告)日：2024-08-08
申请号：US18578192
申请日：2023-05-12
Applicant: Stamicarbon B.V.
IPC: B01J19/00 , B01J4/00 , C07C273/04
CPC classification number: B01J19/0013 , B01J4/001 , B01J19/006 , C07C273/04 , B01J2208/00176 , B01J2208/00194 , B01J2208/00256 , B01J2219/00081
Abstract: 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.
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公开(公告)号：US11772971B2
公开(公告)日：2023-10-03
申请号：US18245254
申请日：2022-07-15
Applicant: STAMICARBON B.V.
Inventor： Carmen Pérez Salmerón , Aldo Maria Iaquaniello , Joey Dobree , Maria Paz Muñoz López
CPC classification number: C01B21/40 , B01D53/18 , B01J8/0278 , B01J8/0285 , B01J19/245 , C01C1/0405 , B01J2208/00504
Abstract: The disclosure pertains to a nitric acid production process and plant. The process involves supplying an oxygen gas stream and ammonia feedstock to the burner section. In embodiments, a part of the tail gas stream (4) is heated in a tail gas heating section (7) and supplied to the burner section (1).
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公开(公告)号：US20230257268A1
公开(公告)日：2023-08-17
申请号：US18245254
申请日：2022-07-15
Applicant: STAMICARBON B.V.
Inventor： Carmen PÉREZ SALMERÓN , Aldo Maria IAQUANIELLO , Joey DOBREE , Maria Paz MUÑOZ LÓPEZ
CPC classification number: C01B21/40 , C01C1/0405 , B01J8/0278 , B01J8/0285 , B01J19/245 , B01D53/18 , B01J2208/00504
Abstract: The disclosure pertains to a nitric acid production process and plant. The process involves supplying an oxygen gas stream and ammonia feedstock to the burner section. In embodiments, a part of the tail gas stream (4) is heated in a tail gas heating section (7) and supplied to the burner section (1).
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Patent Agency Ranking
公开(公告)号：US11420937B2
公开(公告)日：2022-08-23
申请号：US17424940
申请日：2020-12-30
Applicant: STAMICARBON B.V.
Inventor： Rahul Patil
IPC: C07C273/16 , B01D5/00 , C07C273/04 , B01D1/00
Abstract: A urea production process comprising concentrating a first urea solution in a first vacuum evaporator in an evaporation section to give a urea melt and a first vapor, and condensing the first vapor in a first condensation section, wherein the first condensation section is a chilled condensation section, and a urea production system comprising the chilled condensation section.
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公开(公告)号：US20220251032A1
公开(公告)日：2022-08-11
申请号：US17624716
申请日：2020-07-03
Applicant: STAMICARBON B.V.
Inventor： Kirk Anguah OFEI , Alexander Aleida Antonius SCHEERDER
IPC: C07C273/04 , C22C38/48 , C22C38/44 , C22C38/42 , C22C38/04 , C22C38/02 , C22C38/00 , B01J19/00 , B01J19/02 , C07C273/16 , B01D3/34 , B01D1/06
Abstract: 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.
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138.发明授权公开(公告)号：US11298646B2
公开(公告)日：2022-04-12
申请号：US15036714
申请日：2014-11-14
Applicant: Stamicarbon B.V.
Inventor： Brian Sayre Higgins
Abstract: 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.
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公开(公告)号：US10975022B2
公开(公告)日：2021-04-13
申请号：US16937976
申请日：2020-07-24
Applicant: STAMICARBON B.V.
IPC: B01J19/00 , C07C273/04 , B01D5/00 , C07C273/16 , C07C273/14
Abstract: Processes and plants for the production of purified urea solution are described. In a described urea production process, urea is produced in a synthesis section without a high pressure stripper and the urea solution is subjected to purification after the recovery section, to give purified urea solution and off-gas. The purification comprises e.g. steam stripping.
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公开(公告)号：US10829444B2
公开(公告)日：2020-11-10
申请号：US16472792
申请日：2018-07-13
Applicant: STAMICARBON B.V.
Inventor： Juan Coloma González , Johannes Henricus Mennen
Abstract: The invention pertains to a finishing process for urea-comprising material, a plant for finishing urea-comprising material, a method of modifying an existing plant, and a use. Methods are disclosed for preventing the clogging of the conduit for off-gas between the finishing section and the treatment section.
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