公开(公告)号：US10046297B2

公开(公告)日：2018-08-14

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: B01J19/00 ,  B01J19/02 ,  B01J19/24 ,  B22F3/15 ,  C07C273/04 ,  C22C33/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/18 ,  C22C38/40 ,  C22C38/42 ,  C22C38/44 ,  C22C38/58 ,  F28F21/08

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.

公开(公告)号：US09435589B2

公开(公告)日：2016-09-06

申请号：US14398439

申请日：2013-05-02

Applicant: STAMICARBON B.V.

Inventor： Alexander Aleida Antonius Scheerder

IPC: F28F9/18 ,  B01J19/02 ,  B21D53/08 ,  B23K31/02 ,  F28F19/06 ,  F28F21/08 ,  F28D7/06 ,  B01J19/00 ,  B01J19/24 ,  B01J3/04 ,  F28D21/00

CPC classification number: F28F9/18 ,  B01J3/04 ,  B01J19/0013 ,  B01J19/006 ,  B01J19/02 ,  B01J19/24 ,  B01J2219/00081 ,  B01J2219/00256 ,  B01J2219/00768 ,  B01J2219/024 ,  B01J2219/0286 ,  B01J2219/182 ,  B01J2219/192 ,  B21D53/08 ,  B23K31/027 ,  B23K2101/14 ,  B23K2103/04 ,  B23K2103/05 ,  B23K2103/18 ,  F28D7/06 ,  F28D2021/0022 ,  F28F9/185 ,  F28F19/06 ,  F28F21/083 ,  Y02P20/142 ,  Y10T29/49373 ,  Y10T29/49968

Abstract: The present application relates to a method of manufacturing a tube sheet (7) and heat exchanger assembly for a pool reactor or pool condenser for use in the production of urea from ammonia and carbon dioxide, wherein the method comprises manufacturing of the tube sheet (7) from a carbon steel material grade and providing said tube sheet (7) with corrosion protective layers (8, 9) of an austenitic-ferritic duplex stainless steel grade, wherein the heat exchanger comprises at least one U-shaped tube (13) of an austenitic-ferritic duplex stainless steel grade, the method further comprises inserting at least two sleeves (11) of an austenitic-ferritic duplex stainless steel grade through the tube sheet (7) such that both ends of the sleeve (11) extend in a direction away from the tube sheet (7), the method further comprises connecting the sleeves (11), at least the opposing ends thereof, to at least the protective layers (8,9) of the tube sheet (7) and finally, connecting both ends of the at least one U-shaped tube (13) to the respective sleeves (11).

Abstract translation: 本申请涉及制造管板（7）和用于从氨和二氧化碳生产尿素的池式反应器或池式冷凝器的热交换器组件的方法，其中该方法包括制造管板（7 ），并且为所述管板（7）提供具有奥氏体 - 铁素体双相不锈钢等级的腐蚀保护层（8,9），其中所述热交换器包括至少一个U形管（13），所述U形管 奥氏体 - 铁素体双相不锈钢级，该方法还包括通过管板（7）插入至少两个奥氏体 - 铁素体双相不锈钢级的套筒（11），使得套筒（11）的两端在 远离管板（7）的方向，该方法还包括至少将套管（11）的相对端部连接到管板（7）的至少保护层（8,9）上，最后连接 的两端 至少一个U形管（13）到相应的套筒（11）。

公开(公告)号：US20150086440A1

公开(公告)日：2015-03-26

申请号：US14398439

申请日：2013-05-02

Applicant: STAMICARBON B.V.

Inventor： Alexander Aleida Antonius Scheerder

IPC: F28F9/18 ,  F28F19/06 ,  B21D53/08

CPC classification number: F28F9/18 ,  B01J3/04 ,  B01J19/0013 ,  B01J19/006 ,  B01J19/02 ,  B01J19/24 ,  B01J2219/00081 ,  B01J2219/00256 ,  B01J2219/00768 ,  B01J2219/024 ,  B01J2219/0286 ,  B01J2219/182 ,  B01J2219/192 ,  B21D53/08 ,  B23K31/027 ,  B23K2101/14 ,  B23K2103/04 ,  B23K2103/05 ,  B23K2103/18 ,  F28D7/06 ,  F28D2021/0022 ,  F28F9/185 ,  F28F19/06 ,  F28F21/083 ,  Y02P20/142 ,  Y10T29/49373 ,  Y10T29/49968

Abstract: The present application relates to a method of manufacturing a tube sheet (7) and heat exchanger assembly for a pool reactor or pool condenser for use in the production of urea from ammonia and carbon dioxide, wherein the method comprises manufacturing of the tube sheet (7) from a carbon steel material grade and providing said tube sheet (7) with corrosion protective layers (8, 9) of an austenitic- ferritic duplex stainless steel grade, wherein the heat exchanger comprises at least one U-shaped tube (13) of an austenitic-ferritic duplex stainless steel grade, the method further comprises inserting at least two sleeves (11) of an austenitic-ferritic duplex stainless steel grade through the tube sheet (7) such that both ends of the sleeve (11) extend in a direction away from the tube sheet (7), the method further comprises connecting the sleeves (11), at least the opposing ends thereof, to at least the protective layers (8,9) of the tube sheet (7) and finally, connecting both ends of the at least one U-shaped tube (13) to the respective sleeves (11).

Abstract translation: 本申请涉及制造管板（7）和用于从氨和二氧化碳生产尿素的池式反应器或池式冷凝器的热交换器组件的方法，其中该方法包括制造管板（7 ），并且为所述管板（7）提供具有奥氏体 - 铁素体双相不锈钢等级的腐蚀保护层（8,9），其中所述热交换器包括至少一个U形管（13），所述U形管 奥氏体 - 铁素体双相不锈钢级，该方法还包括通过管板（7）插入至少两个奥氏体 - 铁素体双相不锈钢级的套筒（11），使得套筒（11）的两端在 远离管板（7）的方向，该方法还包括至少将套管（11）的相对端部连接到管板（7）的至少保护层（8,9）上，最后连接 的两端 至少一个U形管（13）到相应的套筒（11）。

公开(公告)号：US11090627B2

公开(公告)日：2021-08-17

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: B01J19/00 ,  B01J19/02 ,  B22F3/15 ,  C07C27/04 ,  C22C33/02 ,  C22C38/02 ,  C22C38/04 ,  C22C38/40 ,  C22C38/42 ,  C22C38/44 ,  C22C38/58 ,  F28F21/08 ,  C07C273/04 ,  C22C38/00

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.

公开(公告)号：US10710047B2

公开(公告)日：2020-07-14

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

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：US12084406B2

公开(公告)日：2024-09-10

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 ,  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：US11746084B2

公开(公告)日：2023-09-05

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

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.