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：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.

公开(公告)号：US20200254419A1

公开(公告)日：2020-08-13

申请号：US16858492

申请日：2020-04-24

Applicant: Stamicarbon B.V.

Inventor： Linn LARSSON ,  Daniel GULLBERG ,  Ulf KIVISÄKK ,  Martin ÖSTLUND ,  Alexander Aleida Antonius SCHEERDER

IPC: B01J19/02 ,  B22F3/15 ,  C22C33/02 ,  C22C38/40 ,  C22C38/42 ,  C22C38/44 ,  C22C38/58 ,  F28F21/08 ,  C07C273/04 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04

Abstract: Disclosed is a Hot Isostatic Pressed ferritic-austenitic steel alloy, as well objects thereof. The elementary composition of the alloy comprises, in percentages by weight: C 0-0.05; Si0-0.8; Mn0-4.0; Crmore than 29-35; Ni3.0-10;  Mo0-4.0; N0.30-0.55;   Cu0-0.8; W0-3.0; S 0-0.03; Ce0-0.2; the balance being Fe and unavoidable impurities. The objects can be particularly useful in making components for a urea production plant that require processing such as machining or drilling. A preferred use is in making, or replacing, liquid distributors as used in a stripper as is typically present in the high-pressure synthesis section of a urea plant.

公开(公告)号：US20160325261A1

公开(公告)日：2016-11-10

申请号：US15108549

申请日：2014-12-23

Applicant: Stamicarbon B.V.

Inventor： Linn LARSSON ,  Daniel GULLBERG ,  Ulf KIVISÄKK ,  Martin ÖSTLUND ,  Alexander Aleida Antonius SCHEERDER

IPC: B01J19/02 ,  B22F3/15 ,  C22C38/44 ,  C07C273/04 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C22C33/02 ,  C22C38/42

CPC classification number: B01J19/02 ,  B01J2219/0286 ,  B22F3/15 ,  C07C273/04 ,  C22C33/0285 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/40 ,  C22C38/42 ,  C22C38/44 ,  C22C38/58 ,  F28F21/083

Abstract: Disclosed is a Hot Isostatic Pressed ferritic-austenitic steel alloy, as well objects thereof. The elementary composition of the alloy comprises, in percentages by weight: C 0-0.05; Si 0-0.8; Mn 0-4.0; Cr more than 29-35; Ni 3.0-10; Mo 0-4.0; N 0.30-0.55; Cu 0-0.8; W 0-3.0; S 0-0.03; Ce 0-0.2; the balance being Fe and unavoidable impurities. The objects can be particularly useful in making components for a urea production plant that require processing such as machining or drilling. A preferred use is in making, or replacing, liquid distributors as used in a stripper as is typically present in the high-pressure synthesis section of a urea plant.

Abstract translation: 公开了一种热等静压型铁素体 - 奥氏体钢合金及其目的。 合金的元素组成按重量百分数计：C 0-0.05; Si 0-0.8; Mn 0-4.0; 铬超过29-35; Ni 3.0-10; Mo 0-4.0; N 0.30-0.55; Cu 0-0.8; W 0-3.0; S 0-0.03; Ce 0-0.2; 余量为Fe和不可避免的杂质。 这些物体在制造需要诸如机械加工或钻孔的加工的尿素生产设备的部件方面特别有用。 优选的用途是制造或替代在汽提器中使用的液体分配器，如通常存在于尿素装置的高压合成段中。

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：US20180304224A1

公开(公告)日：2018-10-25

申请号：US16024686

申请日：2018-06-29

Applicant: Stamicarbon B.V.

Inventor： Linn LARSSON ,  Daniel GULLBERG ,  Ulf KIVISÄKK ,  Martin ÖSTLUND ,  Alexander Aleida Antonius SCHEERDER

IPC: B01J19/02 ,  C22C38/04 ,  C22C38/00 ,  C07C273/04 ,  B22F3/15 ,  C22C38/58 ,  C22C38/44 ,  C22C38/42 ,  F28F21/08 ,  C22C38/40 ,  C22C33/02 ,  C22C38/02

Abstract: Disclosed is a Hot Isostatic Pressed ferritic-austenitic steel alloy, as well objects thereof. The elementary composition of the alloy comprises, in percentages by weight: C 0-0.05; Si0-0.8; Mn0-4.0; Crmore than 29-35; Ni3.0-10;  Mo0-4.0; N0.30-0.55:  Cu0-0.8; W0-3.0; S 0-0.03; Ce0-0.2; the balance being Fe and unavoidable impurities. The objects can be particularly useful in making components for a urea production plant that require processing such as machining or drilling. A preferred use is in making, or replacing, liquid distributors as used in a stripper as is typically present in the high-pressure synthesis section of a urea plant.

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.