公开(公告)号：US20240035135A1

公开(公告)日：2024-02-01

申请号：US18481659

申请日：2023-10-05

Applicant: Stamicarbon B.V.

Inventor： Daniel GULLBERG ,  Christina HARALDSSON ,  Anders WILSON ,  Alexander Aleida Antonius SCHEERDER ,  Kirk Anguah OFEI

IPC: C22C38/58 ,  B01J19/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/44 ,  F28F21/08 ,  C21D9/08 ,  C21D8/00 ,  C22C33/04 ,  C07C273/04 ,  C21D6/00 ,  B01D1/06 ,  B01D3/32 ,  C22C1/02 ,  C22C38/42

CPC classification number: C22C38/58 ,  B01J19/02 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/44 ,  F28F21/083 ,  C21D9/08 ,  C21D8/005 ,  C22C33/04 ,  C07C273/04 ,  C21D6/004 ,  B01D1/06 ,  C22C38/004 ,  B01D3/32 ,  C22C1/02 ,  C22C38/42 ,  C21D2211/001 ,  C21D2211/005 ,  B01J2219/0286 ,  Y02P10/122

Abstract: The present disclosure relates to a corrosion resistant duplex stainless steel (ferritic austenitic alloy) which is suitable for use in a plant for the production of urea; and uses thereof. The disclosure also relates to objects made of said duplex stainless steel. Furthermore, the present disclosure also relates to a method for the production of urea and to a plant for the production of urea comprising one or more parts made from said duplex stainless steel, and to a method of modifying an existing plant for the production of urea.

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：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.

公开(公告)号：US20180195158A1

公开(公告)日：2018-07-12

申请号：US15746384

申请日：2016-07-20

Applicant: STAMICARBON B.V.

Inventor： Daniel GULLBERG ,  Christina HARALDSSON ,  Anders WILSON ,  Alexander Aleida Antonius SCHEERDER ,  Kirk Anguah OFEI

IPC: C22C38/58 ,  C22C38/44 ,  C22C38/42 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  F28F21/08

CPC classification number: C22C38/58 ,  B01D1/06 ,  B01D3/32 ,  B01J19/02 ,  B01J2219/0286 ,  C07C273/04 ,  C21D6/004 ,  C21D8/005 ,  C21D9/08 ,  C21D2211/001 ,  C21D2211/005 ,  C22C1/02 ,  C22C33/04 ,  C22C38/001 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44 ,  F28F21/083 ,  Y02P10/122

Abstract: The present disclosure relates to a corrosion resistant duplex stainless steel (ferritic austenitic alloy) which is suitable for use in a plant for the production of urea; and uses thereof. The disclosure also relates to objects made of said duplex stainless steel. Furthermore, the present disclosure also relates to a method for the production of urea and to a plant for the production of urea comprising one or more parts made from said duplex stainless steel, and to a method of modifying an existing plant for the production of urea.

公开(公告)号：US20240262787A1

公开(公告)日：2024-08-08

申请号：US18621755

申请日：2024-03-29

Applicant: STAMICARBON B.V.

Inventor： Kirk Anguah OFEI ,  Alexander Aleida Antonius SCHEERDER

IPC: C07C273/04 ,  B01D1/06 ,  B01D3/34 ,  B01J19/00 ,  B01J19/02 ,  B22F7/06 ,  C07C273/16 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/26 ,  C22C38/42 ,  C22C38/44 ,  C22C38/48

CPC classification number: C07C273/04 ,  B01D1/065 ,  B01D3/346 ,  B01J19/0013 ,  B01J19/02 ,  C07C273/16 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/26 ,  C22C38/42 ,  C22C38/44 ,  C22C38/48 ,  B01J2219/00081 ,  B01J2219/0286 ,  B22F7/064 ,  B22F2301/35 ,  C21D2211/005

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.

公开(公告)号：US20230123681A1

公开(公告)日：2023-04-20

申请号：US18069690

申请日：2022-12-21

Applicant: STAMICARBON B.V.

Inventor： Kirk Anguah OFEI ,  Alexander Aleida Antonius SCHEERDER

IPC: C07C273/04 ,  B01D1/06 ,  B01D3/34 ,  B01J19/00 ,  B01J19/02 ,  C07C273/16 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44 ,  C22C38/48 ,  C22C38/26

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.