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1. 发明申请

US20060032620A1 Tube bundle apparatus for processing corrosive fluids 有权
标题翻译：用于处理腐蚀性液体的管束装置
公开(公告)号：US20060032620A1
公开(公告)日：2006-02-16
申请号：US10512074
申请日：2003-05-09
申请人： Giorgio Gandolfi , Giuseppe Merelli , Andrea Scotto , Gian Pietro Testa
发明人： Giorgio Gandolfi , Giuseppe Merelli , Andrea Scotto , Gian Pietro Testa
IPC分类号： F28F19/02
CPC分类号： B01J19/02 , B01J19/2425 , B01J2219/00024 , B01J2219/0236 , F28D3/02 , F28F19/06
摘要： A tube bundle apparatus for thermal exchange operations at high pressures and temperatures, under conditions of high aggressiveness of process fluids. The tube bundle includes a series of tubes whose internal wall includes a material selected from titanium, zirconium, or an alloy thereof, resistant to aggression of fluids, in which at least one of access chambers to the tube bundle is delimited by a wall including at least the following three metallic layers in succession: a) an external layer for tolerating pressure load, subject to corrosion by contact with the highly aggressive process fluid; b) an intermediate layer of stainless steel; (c) an anticorrosive lining in contact with the highly corrosive fluid, of a material selected from titanium, zirconium, or an alloy thereof. The apparatus can be particularly used as an exchanger/reactor, for example as a stripper, in the high pressure cycle of synthesis processes of urea.
摘要翻译：一种管束装置，用于在高压和高温下，在过程流体的高侵蚀性条件下进行热交换操作。管束包括一系列管，其内壁包括选自钛，锆或其合金的材料，其耐流体侵蚀，其中管束的至少一个进入室由包括在管至少以下三个金属层：a）用于耐受压力负荷的外部层，通过与高侵蚀性过程流体接触而受到腐蚀; b）不锈钢中间层; （c）与高腐蚀性流体接触的防锈衬里，其选自钛，锆或其合金。在尿素的合成过程的高压循环中，该装置可以特别用作交换器/反应器，例如作为汽提塔。

2. 发明授权

US08293201B2 Method for the recovery of ammonia from a gaseous stream in a synthesis process of urea 有权
标题翻译：在尿素合成过程中从气流中回收氨的方法
公开(公告)号：US08293201B2
公开(公告)日：2012-10-23
申请号：US12743717
申请日：2008-11-14
申请人： Paolo Casara , Alessandro Gianazza , Ivano Miracca , Giuseppe Merelli , Gustavo Capannelli , Aldo Bottino
发明人： Paolo Casara , Alessandro Gianazza , Ivano Miracca , Giuseppe Merelli , Gustavo Capannelli , Aldo Bottino
IPC分类号： B01J19/00 , C01C1/02
CPC分类号： C07C273/04 , B01D53/326 , B01D53/58 , B01D53/75 , B01D61/44 , B01D61/445 , C02F1/20 , C02F1/441 , C02F1/4693 , C07C273/16 , Y02P20/582
摘要： A process for the recovery of ammonia contained in a gaseous purging stream produced in a synthesis process of urea.
摘要翻译：在尿素的合成过程中产生的气态吹扫液中所含的氨的回收方法。

3. 发明申请

US20080093064A1 CORROSION-RESISTANT BIMETALLIC TUBE AND ITS USE IN TUBE BUNDLE EQUIPMENT 有权
标题翻译：耐腐蚀双金属管及其在管道装置中的应用
公开(公告)号：US20080093064A1
公开(公告)日：2008-04-24
申请号：US11761735
申请日：2007-06-12
申请人： Alessandro Gianazza , Luca Mairano , Giuseppe Merelli , Domenico Sanfilippo
发明人： Alessandro Gianazza , Luca Mairano , Giuseppe Merelli , Domenico Sanfilippo
IPC分类号： F28F21/08 , B23P6/00
CPC分类号： F28F19/06 , B23P15/26 , F16L13/0236 , F28F9/18 , F28F21/081 , F28F21/084 , F28F21/086 , F28F2275/062 , F28F2275/068 , Y02P80/156 , Y10T29/49718
摘要： A bimetallic tube consisting of at least one tubular element in a first metal resistant to the corrosive and/or erosive action of a process fluid with which it is put in contact, having at least one end, or an area close to an end, externally coated with a layer of a second metal, different from the first and more suitable, with respect to this, for being seal-welded to a support. Tube bundle equipment to be used for thermal exchange operations at high temperatures and pressures, under conditions of high aggressiveness of the process fluids, wherein the tube bundle comprises at least one tube having the above characteristics. Said equipment is particularly used as a heat exchanger and decomposer, for example as a stripper, in the cycle of urea synthesis processes where there are conditions of high pressure, high temperatures, high aggressiveness of the process fluids, and in which the tube bundle consists of at least one tube having the above characteristics.
摘要翻译：一种双金属管，由至少一个第一金属管状元件组成，其耐受其与其接触的工艺流体的腐蚀性和/或侵蚀作用，具有至少一个端部或接近端部的区域，外部涂覆有与第一金属不同的第二金属层，并且对于密封焊接到支撑体上。管束设备，用于在高温和高压下在过程流体的高侵蚀性条件下进行热交换操作，其中管束包括至少一个具有上述特征的管。所述设备在尿素合成过程的循环中特别用作热交换器和分解器，例如作为汽提器，其中存在高压，高温，过程流体的高侵蚀性，并且其中管束组成具有上述特征的至少一个管。

4. 发明授权

US09341419B2 Corrosion-resistant bimetallic tube and its use in tube bundle equipment 有权
标题翻译：耐腐蚀双金属管及其在管束设备中的应用
公开(公告)号：US09341419B2
公开(公告)日：2016-05-17
申请号：US11761735
申请日：2007-06-12
申请人： Alessandro Gianazza , Luca Mairano , Giuseppe Merelli , Domenico Sanfilippo
发明人： Alessandro Gianazza , Luca Mairano , Giuseppe Merelli , Domenico Sanfilippo
IPC分类号： F28F19/00 , F28F9/18 , F28F21/08 , F16L13/02 , F28F19/06
CPC分类号： F28F19/06 , B23P15/26 , F16L13/0236 , F28F9/18 , F28F21/081 , F28F21/084 , F28F21/086 , F28F2275/062 , F28F2275/068 , Y02P80/156 , Y10T29/49718
摘要： A bimetallic tube consisting of at least one tubular element in a first metal resistant to the corrosive and/or erosive action of a process fluid with which it is put in contact, having at least one end, or an area close to an end, externally coated with a layer of a second metal, different from the first and more suitable, with respect to this, for being seal-welded to a support.Tube bundle equipment to be used for thermal exchange operations at high temperatures and pressures, under conditions of high aggressiveness of the process fluids, wherein the tube bundle comprises at least one tube having the above characteristics.Said equipment is particularly used as a heat exchanger and decomposer, for example as a stripper, in the cycle of urea synthesis processes where there are conditions of high pressure, high temperatures, high aggressiveness of the process fluids, and in which the tube bundle consists of at least one tube having the above characteristics.
摘要翻译：一种双金属管，由至少一个第一金属管状元件组成，其耐受其与其接触的工艺流体的腐蚀性和/或侵蚀作用，具有至少一个端部或接近端部的区域，外部涂覆有与第一金属不同的第二金属层，并且对于密封焊接到支撑体上。管束设备，用于在高温和高压下在过程流体的高侵蚀性条件下进行热交换操作，其中管束包括至少一个具有上述特征的管。所述设备在尿素合成过程的循环中特别用作热交换器和分解器，例如作为汽提器，其中存在高压，高温，过程流体的高侵蚀性，并且其中管束组成具有上述特征的至少一个管。

5. 发明申请

US20110091369A1 METHOD FOR THE RECOVERY OF AMMONIA FROM A GASEOUS STREAM IN A SYNTHESIS PROCESS OF UREA 有权
标题翻译：在尿素合成过程中从气体流中恢复氨的方法
公开(公告)号：US20110091369A1
公开(公告)日：2011-04-21
申请号：US12743717
申请日：2008-11-14
申请人： Paolo Casara , Alessandro Gianazza , Ivano Miracca , Giuseppe Merelli , Gustavo Capannelli , Aldo Bottino
发明人： Paolo Casara , Alessandro Gianazza , Ivano Miracca , Giuseppe Merelli , Gustavo Capannelli , Aldo Bottino
IPC分类号： C01C1/04 , C07C273/02 , B01D61/42
CPC分类号： C07C273/04 , B01D53/326 , B01D53/58 , B01D53/75 , B01D61/44 , B01D61/445 , C02F1/20 , C02F1/441 , C02F1/4693 , C07C273/16 , Y02P20/582
摘要： The present invention relates to a process for the recovery of ammonia contained in a gaseous purging stream produced in a synthesis process of urea, comprising the following phases: a) subjecting the gaseous purging stream to a washing with an aqueous acidic solution, at a pH ranging from 1 to 6, with the formation of a first purified gaseous stream and an aqueous solution containing an ammonium salt; b) subjecting the aqueous solution containing the ammonium salt coming from phase a) to stripping, after treatment with a strong base, at a temperature ranging from 50 to 250° C. and a pressure ranging from 1 to 40 absolute bar, with the formation of a second gaseous stream comprising NH3, H2O and possibly CO2 and a solution containing a salt of the cation of said strong base; c) subjecting the solution containing the salt of the cation of the strong base coming from phase b) to a Membrane Electrochemical Process (MEP) with the formation of an aqueous solution of the acid used in phase a), an aqueous solution of the base used in phase b) and possibly a diluted aqueous solution of the cation salt of the strong base; d) recycling said aqueous solution of the acid and aqueous solution of the base to phase a) and to phase b) respectively, and recycling said second gaseous stream coming from phase b) to the urea synthesis process. The relative equipment is also described.
摘要翻译：本发明涉及一种在尿素合成过程中产生的气态吹扫液中所含的氨的回收方法，包括以下阶段：a）在酸性溶液中以pH值进行洗涤，形成第一纯化气流和含有铵盐的水溶液; b）使来自a）相的含有铵盐的水溶液在强碱处理后，在50-250℃的温度和1至40绝对巴的压力下进行汽提，同时形成包含NH 3，H 2 O和可能的CO 2的第二气流和含有所述强碱的阳离子的盐的溶液; c）在相a）中使用的酸的水溶液的形成，将含有来自相b）的强碱的阳离子盐的溶液经受膜电化学工艺（MEP），将碱的水溶液在阶段b）中使用，并且可能是强碱的阳离子盐的稀释水溶液; d）将所述碱的酸和水溶液的所述水溶液分别循环到a）相和b相，并将来自b）相的所述第二气流再循环到尿素合成过程。还描述了相关设备。

6. 发明授权

US07712517B2 Tube bundle apparatus for processing corrosive fluids 有权
标题翻译：用于处理腐蚀性液体的管束装置
公开(公告)号：US07712517B2
公开(公告)日：2010-05-11
申请号：US10512074
申请日：2003-05-09
申请人： Giorgio Gandolfi , Giuseppe Merelli , Andrea Scotto , Gian Pietro Testa
发明人： Giorgio Gandolfi , Giuseppe Merelli , Andrea Scotto , Gian Pietro Testa
IPC分类号： B01D19/02 , F28F19/06
CPC分类号： B01J19/02 , B01J19/2425 , B01J2219/00024 , B01J2219/0236 , F28D3/02 , F28F19/06
摘要： A tube bundle apparatus for thermal exchange operations at high pressures and temperatures, under conditions of high aggressiveness of process fluids. The tube bundle includes a series of tubes whose internal wall includes a material selected from titanium, zirconium, or an alloy thereof, resistant to aggression of fluids, in which at least one of access chambers to the tube bundle is delimited by a wall including at least the following three metallic layers in succession: a) an external layer for tolerating pressure load, subject to corrosion by contact with the highly aggressive process fluid; b) an intermediate layer of stainless steel; (c) an anticorrosive lining in contact with the highly corrosive fluid, of a material selected from titanium, zirconium, or an alloy thereof. The apparatus can be particularly used as an exchanger/reactor, for example as a stripper, in the high pressure cycle of synthesis processes of urea.
摘要翻译：一种管束装置，用于在高压和高温下，在过程流体的高侵蚀性条件下进行热交换操作。管束包括一系列管，其内壁包括选自钛，锆或其合金的材料，其耐流体侵蚀，其中管束的至少一个进入室由包括在管至少以下三个金属层：a）用于耐受压力负荷的外部层，通过与高侵蚀性过程流体接触而受到腐蚀; b）不锈钢中间层; （c）与高腐蚀性流体接触的防锈衬里，其选自钛，锆或其合金。在尿素的合成过程的高压循环中，该装置可以特别用作交换器/反应器，例如作为汽提塔。

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