公开(公告)号：US2738256A

公开(公告)日：1956-03-13

申请号：US40076953

申请日：1953-12-28

Applicant: STAMICARBON

Inventor： LOON WILLEM VAN ,  SIEDS KOOPAL

IPC: C01B32/942

CPC classification number: C01B32/942

公开(公告)号：US2724503A

公开(公告)日：1955-11-22

申请号：US32860352

申请日：1952-12-30

Applicant: STAMICARBON

Inventor： FONTEIN FREERK J

IPC: B04C5/081 ,  B04C5/12 ,  B04C5/14 ,  B04C5/26 ,  B22F3/14

CPC classification number: B04C5/12 ,  B04C5/081 ,  B04C5/14 ,  B04C5/26 ,  B22F3/14

公开(公告)号：US2701641A

公开(公告)日：1955-02-08

申请号：US39238053

申请日：1953-11-16

Applicant: STAMICARBON

Inventor： CENTINUS KRIJGSMAN

IPC: B03B5/30

CPC classification number: B03B5/30

公开(公告)号：US2671560A

公开(公告)日：1954-03-09

申请号：US16813250

申请日：1950-06-14

Applicant: STAMICARBON

Inventor： FONTEIN FREERK J ,  LEEMAN JAN N J

IPC: B04C5/04 ,  B04C5/081 ,  B04C5/12 ,  B04C5/26 ,  B04C5/28

CPC classification number: B04C5/04 ,  B04C5/081 ,  B04C5/12 ,  B04C5/26 ,  B04C5/28

公开(公告)号：US20250108350A1

公开(公告)日：2025-04-03

申请号：US18850970

申请日：2023-03-28

Applicant: STAMICARBON B.V.

Inventor： Paul Maria Gerardus Clemens Petrus Hubertus JORISSEN ,  Alexander Aleida Antonius SCHEERDER ,  Kirk Anguah OFEI ,  Alessandro BRUN ,  Michael SIMML

IPC: B01J3/02 ,  B01J3/03 ,  C05C9/00 ,  C07C273/04

Abstract: 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.

公开(公告)号：US12209061B2

公开(公告)日：2025-01-28

申请号：US17368924

申请日：2021-07-07

Applicant: STAMICARBON B.V.

Inventor： Joey Dobree ,  Johannes Henricus Mennen

IPC: C07C273/04 ,  B01D3/00 ,  B01J19/00 ,  C01C1/18 ,  C05C1/00 ,  C05C9/00 ,  C05G5/23 ,  C07C273/02 ,  C07C273/10 ,  C07C273/14 ,  C07C275/02

Abstract: 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.

公开(公告)号：US12186725B2

公开(公告)日：2025-01-07

申请号：US18578192

申请日：2023-05-12

Applicant: Stamicarbon B.V.

Inventor： Rahul Patil ,  Lambertus Wilhelmus Gevers ,  Markus Theodorus Marie Michaël Wagemans

IPC: B01J19/00 ,  B01J4/00 ,  C07C273/04

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.

公开(公告)号：US12179138B2

公开(公告)日：2024-12-31

申请号：US17141328

申请日：2021-01-05

Applicant: STAMICARBON B.V.

Inventor： Cain Christopher Doherty ,  Aloysius Mechteldis Emmanuel Schoenmakers

IPC: B01D47/10 ,  B01D47/05 ,  B01D47/06 ,  C05C9/00 ,  C07C273/02 ,  C07C273/04

Abstract: 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.

公开(公告)号：US12083468B2

公开(公告)日：2024-09-10

申请号：US17684716

申请日：2022-03-02

Applicant: Stamicarbon B.V.

Inventor： Brian Sayre Higgins

IPC: B01D47/12 ,  B01D47/05 ,  B01D47/06 ,  B01D47/10 ,  B03C3/013 ,  C07C273/16 ,  B01D53/58

CPC classification number: B01D47/12 ,  B01D47/05 ,  B01D47/06 ,  B01D47/10 ,  B03C3/013 ,  C07C273/16 ,  B01D53/58 ,  B01D2247/04 ,  B01D2247/102 ,  B01D2247/103 ,  B01D2247/107 ,  B01D2251/506 ,  B01D2252/103

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.

公开(公告)号：US20240270685A1

公开(公告)日：2024-08-15

申请号：US18688914

申请日：2023-11-22

Applicant: Stamicarbon B.V.

Inventor： Rahul PATIL ,  Johannes Henricus MENNEN ,  Lambertus Wilhelmus GEVERS

IPC: C07C273/12 ,  C07D251/60

CPC classification number: C07C273/12 ,  C07D251/60

Abstract: 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.