公开(公告)号：US2756685A

公开(公告)日：1956-07-31

申请号：US21084951

申请日：1951-02-14

Applicant: STAMICARBON

Inventor： HOOGENDONK JOHAN W

IPC: F04F5/38

CPC classification number: F04F5/38

公开(公告)号：US2701058A

公开(公告)日：1955-02-01

申请号：US36547753

申请日：1953-07-01

Applicant: STAMICARBON

Inventor： LEEMAN JAN N J

IPC: B03B5/36 ,  B03B11/00

CPC classification number: B03B11/00 ,  B03B5/36 ,  B03B2011/004 ,  B03B2011/008

公开(公告)号：US2689810A

公开(公告)日：1954-09-21

申请号：US36961853

申请日：1953-07-22

Applicant: STAMICARBON

Inventor： VEGTER HERMAN J

IPC: B04C5/081 ,  C08B30/04

CPC classification number: B04C5/081 ,  C08B30/044

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.

Inventor： Ronny Albert Mathijs Pustjens ,  Johan Albert Arno Van Den Tillaart

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.

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.

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.

Inventor： Rahul PATIL ,  Lambertus Wilhelmus GEVERS ,  Markus Theodorus Marie Michaël WAGEMANS

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.

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

IPC: C01B21/40 ,  C01C1/04 ,  B01D53/18 ,  B01J8/02 ,  B01J19/24

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).

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

IPC: C01B21/40 ,  C01C1/04 ,  B01J8/02 ,  B01J19/24 ,  B01D53/18

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).

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.

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.