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1. 发明申请

WO2007089099A1 REACTOR WITH IMPROVED HEAT TRANSFER PERFORMANCE 审中-公开
标题翻译：具有改进的热传递性能的反应器
公开(公告)号：WO2007089099A1
公开(公告)日：2007-08-09
申请号：PCT/KR2007/000529
申请日：2007-01-31
申请人： LG CHEM, LTD. , SHIN, Sang-Baek , HAN, Sang-Phil , IM, Ye-Hoon , KIM, Young-Bae , CHANG, Jung-Hoon , NA, Sang-Oeb , LEE, Won-Am
发明人： SHIN, Sang-Baek , HAN, Sang-Phil , IM, Ye-Hoon , KIM, Young-Bae , CHANG, Jung-Hoon , NA, Sang-Oeb , LEE, Won-Am
IPC分类号： F28D7/00
CPC分类号： F28F9/22 , B01J8/008 , B01J8/067 , B01J2208/00221 , F28D7/0091
摘要： Disclosed is a shell-and-tube reactor or heat exchanger, which alternately comprises a doughnut-type baffle plate and a first disc-type baffle plate in order to increase heat transfer efficiency. In the reactor or heat exchanger, a second disc-type baffle plate is placed in an empty space inside of the doughnut-type baffle plate, and some tubes, through the inside of which a first object for heat transfer with a heat transfer medium, are present in a region inside of the doughnut-type baffle plate and outside of the second disc-type baffle plate. Also disclosed is a method for producing an oxide, comprising: using said reactor or heat exchanger, and causing a catalytic vapor-phase oxidation reaction in the tubes, through the inside of which the first object for heat transfer with the heat transfer medium is passed.
摘要翻译：公开了一种管壳式反应器或热交换器，其交替地包括环形挡板和第一盘式挡板，以提高传热效率。在反应器或热交换器中，第二盘式挡板放置在环形挡板的内部的空的空间中，一些管通过其内部具有传热介质传热的第一物体，存在于环形挡板的内侧的区域和第二盘状挡板的外侧。还公开了一种生产氧化物的方法，包括：使用所述反应器或热交换器，并在管中引起催化气相氧化反应，通过其内部，传热介质的第一物体通过。

2. 发明申请

WO2007083927A1 REACTOR WITH IMPROVED HEAT TRANSFER PERFORMANCE 审中-公开
标题翻译：具有改进的热传递性能的反应器
公开(公告)号：WO2007083927A1
公开(公告)日：2007-07-26
申请号：PCT/KR2007/000298
申请日：2007-01-18
申请人： LG CHEM, LTD.
发明人： SHIN, Sang-Baek , HAN, Sang-Phil , IM, Ye-Hoon , KIM, Young-Bae , CHANG, Jung-Hoon , NA, Sang-Oeb , LEE, Won-Am
IPC分类号： F28D7/00
CPC分类号： B01J8/067 , B01J2208/00194 , B01J2208/00221 , B01J2208/0023 , B01J2208/025 , F28D7/0091 , F28F9/22
摘要： Disclosed is a shell-and-tube reactor or heat exchanger comprising: first tubes, through the inside of which a first object for heat transfer with a heat transfer medium is passed, some of the first tubes being provided in a zone in which a flow of the heat transfer medium (parallel flow) parallel to the axis of the tubes is present; and a second tube, through the inside of which the first object is not passed, the second tube being provided in said zone such that it is parallel to the axis of the first tubes. Also disclosed is a method for producing an oxide, comprising using said shell-and-tube reactor or heat exchanger, and causing a catalytic vapor-phase oxidation reaction in first tubes, through the inside of which the first object for heat transfer with the heat transfer medium is passed.
摘要翻译：公开了一种管壳式反应器或热交换器，其包括：第一管，通过其内部通过与传热介质进行热传递的第一物体，一些第一管设置在其中流动的区域的平行于管的轴的传热介质（平行流）; 以及第二管，其第一物体的内部不通过，所述第二管设置在所述区域中，使得其平行于第一管的轴线。还公开了一种生产氧化物的方法，包括使用所述管壳式反应器或热交换器，并且在第一管中引起催化气相氧化反应，其中第一管内的第一物体与热量传热转印介质通过。

3. 发明申请

WO2006014053A1 METHOD FOR PRODUCING (METH)ACRYLIC ACID 审中-公开
标题翻译：生产（甲基）丙烯酸的方法
公开(公告)号：WO2006014053A1
公开(公告)日：2006-02-09
申请号：PCT/KR2005/002432
申请日：2005-07-27
申请人： LG CHEM, LTD.
发明人： KANG, Seong-Pil , CHOI, Seok-Hwan , HA, Kyoung-Su , KO, Jun-Seok , KIM, Young-Bae , WOO, Boo-Gon , PARK, Min-Jeong
IPC分类号： C07C57/07
CPC分类号： C07C51/44 , C07C51/48 , C07C57/04
摘要： Disclosed is a method for producing (meth)acrylic acid comprising a process of recovering (meth)acrylic acid as aqueous (meth)acrylic acid solution from a (meth)acrylic acid-containing gas mixture produced by the catalytic gas phase oxidation of at least one reactant selected from the group consisting of propane, propylene, isobutylene and (meth)acrolein, wherein the recovering process comprises the steps of: (1) feeding the (meth)acrylic acid-containing gas mixture into a quenching tower and condensing it in the quenching tower so as to recover an aqueous (meth)acrylic acid solution from the bottom of the quenching tower, in which some of the recovered aqueous (meth)acrylic acid solution is recycled to the upper portion of the quenching tower so as to condense the (meth)acrylic acid-containing gas mixture; (2) passing the uncondensed part of the (meth)acrylic acid-containing gas mixture from the top of the quenching tower to a distillation tower; and (3) heating the bottom of the distillation tower to separate water-containing impurity components from the uncondensed (meth)acrylic acid-containing gas mixture and to discharge them from the top of the distillation tower. A system used for carrying out the method is also disclosed.
摘要翻译：公开了一种制备（甲基）丙烯酸的方法，包括从（甲基）丙烯酸水溶液中回收（甲基）丙烯酸作为（甲基）丙烯酸水溶液的方法，所述方法至少由选自丙烷，丙烯，异丁烯和（甲基）丙烯醛的一种反应物，其中回收方法包括以下步骤：（1）将含（甲基）丙烯酸的气体混合物进料到淬火塔中并将其冷凝淬火塔，以从骤冷塔的底部回收（甲基）丙烯酸水溶液，其中一些回收的（甲基）丙烯酸水溶液被循环到淬火塔的上部以冷凝（甲基）丙烯酸气体混合物; （2）使来自（甲基）丙烯酸的气体混合物的未冷凝的部分从淬火塔的顶部通到蒸馏塔; 和（3）加热蒸馏塔的底部以将含水的杂质组分与未冷凝（甲基）丙烯酸的气体混合物分离并从蒸馏塔的顶部排出。还公开了用于执行该方法的系统。

4. 发明申请

WO2007007979A1 METHOD OF PRODUCING UNSATURATED ACID IN FIXED-BED CATALYTIC PARTIAL OXIDATION REACTOR WITH HIGH EFFICIENCY 审中-公开
标题翻译：固定床催化部分氧化反应器高效生产不饱和酸的方法
公开(公告)号：WO2007007979A1
公开(公告)日：2007-01-18
申请号：PCT/KR2006/002651
申请日：2006-07-07
申请人： LG CHEM, LTD.
发明人： HA, Kyoung-Su , WOO, Boo-Gon , KO, Jun-Seok , KANG, Seong-Pil , CHOI, Seok-Hwan , KIM, Young-Bae
IPC分类号： C07C45/27
CPC分类号： C07C45/34 , B01J8/0453 , B01J8/0457 , B01J8/067 , B01J2208/00212 , B01J2208/0053 , B01J2208/025 , B01J2219/0004 , C07C45/35 , C07C45/36 , C07C45/37 , C07C51/215 , C07C51/252 , C07C47/21 , C07C47/22 , C07C57/04
摘要： Disclosed is a process for producing unsaturated aldehydes and/or unsaturated acids from olefins or alkanes in a fixed bed shell-and-tube heat exchanger-type reactor by catalytic vapor phase oxidation. A heat exchanger-type reactor for use in such a process is also disclosed. In the process, at least one of the first-step reaction zone and the second-step reaction zone is divided into two or more shell spaces by at least one partition; each of the divided shell spaces is independently heat-controlled; a heat transfer medium in the first shell space of the first-step reaction zone or the first shell space of the second-step reaction zone has a temperature ranging from the lowest active temperature of a catalyst layer packed in a reaction tube corresponding to the first shell space of the first-step reaction zone or the first shell space of the second-step reaction zone to [the lowest active temperature + 20 °C], when referring to the two or more shell spaces corresponding to the first-step reaction zone sequentially as the first shell space of the first-step reaction zone, the second shell space of the first-step reaction zone, ..., the n th shell space of the first-step reaction zone, and the two or more shell spaces corresponding to the second-step reaction zone sequentially as the first shell space of the second-step reaction zone, the second shell space of the second-step reaction zone, ... , the n th shell space of the second-step reaction zone; and the first shell space of the first-step reaction zone or the first shell space of the second-step reaction zone is controlled in such a manner that the first shell space provides a reactant conversion contribution per length as defined in Equation 1 or 2 of 1.2∼2.5.
摘要翻译：公开了一种通过催化气相氧化在固定床管壳式热交换器型反应器中由烯烃或烷烃生产不饱和醛和/或不饱和酸的方法。还公开了一种用于这种方法的热交换器型反应器。在该过程中，至少一个第一步骤反应区和第二步反应区被至少一个隔板分成两个或多个壳层空间; 每个分开的壳空间是独立的热控制的; 在第一步骤反应区的第一壳体空间或第二阶段反应区的第一壳体空间中的传热介质的温度范围从填充在对应于第一步骤的反应管的反应管中的催化剂层的最低活性温度当第二步反应区的第一阶段反应区的壳层空间或第二阶段反应区的第一壳空间为最低活性温度+ 20℃时，依次作为第一步反应区的第一壳空间，第一步反应区的第二壳空间，第一步反应区的第n个第二壳空间，和对应于第二步反应区的两个或多个壳层空间依次作为第二步反应区的第一壳空间，第二步反应区的第二壳空间，第二步反应区的壳层空间; 并且以这样的方式控制第一步骤反应区或第二阶段反应区的第一壳层空间的第一壳层空间，使得第一壳空间提供如式1或2中定义的每个长度的反应物转化贡献 1.2〜2.5。

5. 发明申请

WO2006098601A1 METHOD OF PRODUCING UNSATURATED ACID FROM OLEFIN 审中-公开
标题翻译：从烯烃生产不饱和酸的方法
公开(公告)号：WO2006098601A1
公开(公告)日：2006-09-21
申请号：PCT/KR2006/000979
申请日：2006-03-17
申请人： LG CHEM, LTD.
发明人： WOO, Boo-Gon , KO, Jun-Seok , HA, Kyoung-Su , KANG, Seong-Pil , CHOI, Seok-Hwan , KIM, Young-Bae
IPC分类号： C07C51/16
CPC分类号： B01J8/067 , B01J2208/00212 , B01J2208/025 , C07C51/215 , C07C51/252 , C07C57/04
摘要： Disclosed is a shell-and-tube heat exchanger type reactor that can be used for a process of producing unsaturated acids from olefins via fixed-bed catalytic partial oxidation, which comprises at least one reaction tube, each including at least one first-step catalyst layer, in which olefins are oxidized by a first-step catalyst to mainly produce unsaturated aldehydes, and at least two second-step catalyst layers, in which the unsaturated aldehydes are oxidized by a second-step catalyst to produce unsaturated acids, wherein a first catalyst layer of the second-step catalyst layers, disposed right adjacent to the first-step catalyst layer, has an activity corresponding to 5∼ 30% of the activity of the catalyst layer having a highest activity among the second-step catalyst layers. A method of producing unsaturated acids from olefins by using the reactor is also disclosed.
摘要翻译：公开了一种壳管式热交换器型反应器，其可用于通过固定床催化部分氧化由烯烃生产不饱和酸的方法，其包括至少一个反应管，每个反应管包含至少一个第一步催化剂层，其中烯烃被第一步催化剂氧化以主要产生不饱和醛，以及至少两个第二阶段催化剂层，其中不饱和醛被第二步催化剂氧化以产生不饱和酸，其中第一与第一级催化剂层相邻设置的第二级催化剂层的催化剂层的活性相对于第二级催化剂层中具有最高活性的催化剂层的活性的5〜30％的活性。还公开了通过使用反应器由烯烃生产不饱和酸的方法。

6. 发明申请

WO2005105721A1 METHOD FOR RECOVERING ACRYLIC ACID 审中-公开
标题翻译：回收丙烯酸的方法
公开(公告)号：WO2005105721A1
公开(公告)日：2005-11-10
申请号：PCT/KR2005/001199
申请日：2005-04-26
申请人： LG CHEM, LTD.
发明人： KANG, Seong-Pil , CHOI, Seok-Hwan , HA, Kyoung-Su , KO, Jun-Seok , WOO, Boo-Gon , KIM, Young-Bae
IPC分类号： C07C51/44
CPC分类号： C07C51/44 , B01J2219/00006 , C07C51/487 , C07C57/04
摘要： Disclosed is a simplified method for recovering acrylic acid from a mixture containing crylic acid, acrylic acid dimer and impurities with high boiling point, in a stable and efficient anner. The method comprises the steps of: introducing the mixture into an acrylic acid ecovering device comprising an acrylic distillation unit integrated with an acrylic acid dimer yrolysis tank; carrying out decomposition of acrylic acid dimmer under reduced pressure and ecovering acrylic acid. The method optionally further comprises a step of recycling a portion of he solution obtained from the bottom of the acrylic acid recovering device to the acrylic acid ecovering device.
摘要翻译：公开了一种在稳定且高效的惰性气体中从含有丙烯酸，丙烯酸二聚物和高沸点杂质的混合物中回收丙烯酸的简化方法。该方法包括以下步骤：将混合物引入到丙烯酸环保装置中，该装置包括与丙烯酸二聚体溶解槽结合的丙烯酸蒸馏装置; 在减压下进行丙烯酸二聚体的分解和环保的丙烯酸。该方法还可以包括将从丙烯酸回收装置的底部获得的溶液的一部分再循环到丙烯酸环保装置的步骤。

7. 发明申请

WO2009054688A2 METHOD FOR COLLECTING (METH)ACRYLIC ACID AND APPARATUS FOR COLLECTING (METH)ACRYLIC ACID 审中-公开
标题翻译：收集（甲基）丙烯酸的方法和收集（甲基）丙烯酸的装置
公开(公告)号：WO2009054688A2
公开(公告)日：2009-04-30
申请号：PCT/KR2008/006279
申请日：2008-10-23
申请人： LG CHEM, LTD. , BAEK, Se-Won , HA, Kyoung-Su , PARK, Sung-Kyoo , KO, Jun-Seok , WOO, Dong-Hyun , KIM, Young-Bae , CHANG, Jung-Hoon
发明人： BAEK, Se-Won , HA, Kyoung-Su , PARK, Sung-Kyoo , KO, Jun-Seok , WOO, Dong-Hyun , KIM, Young-Bae , CHANG, Jung-Hoon
IPC分类号： C07C57/07
CPC分类号： C07C51/42 , C07C57/04
摘要： The present invention provides a (meth)acrylic acid collecting method for collecting a (meth)acrylic acid from a mixed gas that includes an organic byproduct, a steam, and a (meth)acrylic acid that are generated in a production reaction of the (meth)acrylic acid, which includes the steps of a) contacting the mixed gas that includes the organic byproduct, the steam, and the (meth)acrylic acid with a (meth)acrylic acid absorption solvent to obtain a gas that includes the organic byproduct and the steam and the (meth)acrylic acid containing solution while the gas and the (meth)acrylic acid containing solution are separated from each other; b) contacting the gas that includes the organic byproduct and the steam that are obtained in the step a with the organic byproduct absorption solvent to obtain the gas that includes the steam and the organic byproduct containing solution while the gas and the organic byproduct containing solution are separated from each other; c) supplying the gas that includes the steam that is obtained in the step b into the production reaction of the (meth)acrylic acid; and d) obtaining the (meth)acrylic acid from the (meth)acrylic acid containing solution that is obtained in the step a while the (meth)acrylic acid and the (meth)acrylic acid containing solution are separated from each other, and a (meth)acrylic acid collecting device.
摘要翻译：本发明提供一种（甲基）丙烯酸收集方法，用于从包含有机副产物，蒸汽和（甲基）丙烯酸的混合气体中收集（甲基）丙烯酸，所述有机副产物，蒸汽和（甲基）丙烯酸在（甲基）丙烯酸，其包括以下步骤：a）使包含有机副产物，蒸汽和（甲基）丙烯酸的混合气体与（甲基）丙烯酸吸收溶剂接触以获得包含有机副产物的气体和蒸汽和（甲基）丙烯酸溶液，同时气体和（甲基）丙烯酸溶液彼此分离; b）将包含有机副产物的气体和步骤a中获得的蒸汽与有机副产物吸收溶剂接触，以获得包含蒸汽和含有机副产物的溶液的气体，同时气体和含有机副产物的溶液为相互分离 c）将包含步骤b中获得的蒸汽的气体供应到（甲基）丙烯酸的生产反应中; 和d）在（甲基）丙烯酸和（甲基）丙烯酸的溶液相互分离的同时，从步骤a得到的（甲基）丙烯酸溶液得到（甲基）丙烯酸，（甲基）丙烯酸收集装置。

8. 发明申请

WO2007097573A1 ANNULAR DISTRIBUTOR HAVING GUIDE VANE TO IMPROVE FLOW RATE DISTRIBUTION 审中-公开
标题翻译：具有导向槽的环形分布器提高流量分布
公开(公告)号：WO2007097573A1
公开(公告)日：2007-08-30
申请号：PCT/KR2007/000919
申请日：2007-02-22
申请人： LG CHEM, LTD.
发明人： SHIN, Sang-Baek , HAN, Sang-Phil , IM, Ye-Hoon , KIM, Young-Bae , CHANG, Jung-Hoon
IPC分类号： B01J8/06 , B01J8/02 , F28D7/00
CPC分类号： F28D7/0091 , B01J8/067 , B01J2208/00221 , F28D7/16 , F28F9/02 , F28F9/0263
摘要： Disclosed is an annular distributor having: an annular slit layer that is mounted on an inner circumferential surface of the annular distributor and has at least one slit discharging or introducing a fluid; at least one opening that is formed on an outer circumferential surface of the annular distributor and is connected with any one of a fluid supply duct and a fluid discharge duct; and at least one guide vane selected from three types of guide vanes that are installed in the annular distributor, and splits a flow rate of the fluid supplied from the duct or collects a flow rate of the fluid discharged to the duct. And disclosed are a reactor or heat exchanger has the annular distributor, and a method of producing unsaturated aldehyde or unsaturated acid from olefin by catalytic gas phase oxidation in the reactor.
摘要翻译：公开了一种环形分配器，其具有：环形狭缝层，其安装在环形分配器的内周面上，并且具有排出或引入流体的至少一个狭缝; 至少一个开口，其形成在所述环形分配器的外周表面上并与流体供应管道和流体排放管道中的任何一个连接; 以及选自安装在环形分配器中的三种导向叶片中的至少一个导向叶片，并分离从管道供应的流体的流量或收集排出到管道的流体的流量。并且公开了一种具有环形分布器的反应器或热交换器，以及在反应器中通过催化气相氧化从烯烃生产不饱和醛或不饱和酸的方法。

9. 发明申请

WO2006135189A1 TEMPERATURE MEASURING DEVICE 审中-公开
标题翻译：温度测量装置
公开(公告)号：WO2006135189A1
公开(公告)日：2006-12-21
申请号：PCT/KR2006/002261
申请日：2006-06-14
申请人： LG CHEM, LTD.
发明人： HA, Kyoung-Su , KO, Jun-Seok , WOO, Boo-Gon , KANG, Seong-Pil , CHOI, Seok-Hwan , LEE, Sang-Youn , KIM, Young-Bae
IPC分类号： G01K1/14
CPC分类号： G01K3/14 , G01K1/14 , G01K7/02
摘要： Disclosed is a temperature measuring device. The temperature measuring device includes: a thermo-well tube; and a cable or wire type temperature measuring means which is installed in a thermo-well tube, wherein temperature measuring means has temperature detecting sensors disposed at an intermediate portion thereof, and the temperature detecting sensors can be moved axially in the thermo-well tube by applying tension to both ends of the cable or wire type temperature measuring means. The present invention also provides a reaction tube in which the temperature measuring device is disposed axially, and a reactor including at least one temperature measuring device or reaction tube as described above.
摘要翻译：公开了一种温度测量装置。所述温度测量装置包括：热井管; 以及安装在热井管中的电缆或线型温度测量装置，其中温度测量装置具有设置在其中间部分的温度检测传感器，并且温度检测传感器可以在热井管中轴向移动，对电缆或电线式温度测量装置的两端施加张力。本发明还提供一种反应管，其中温度测量装置轴向设置，反应器包括如上所述的至少一个温度测量装置或反应管。

10. 发明申请

WO2005080310A1 METHOD FOR PRODUCING (METH)ACRYLIC ACID 审中-公开
标题翻译：生产（甲基）丙烯酸的方法
公开(公告)号：WO2005080310A1
公开(公告)日：2005-09-01
申请号：PCT/KR2005/000427
申请日：2005-02-18
申请人： LG CHEM, LTD.
发明人： KANG, Seong-Pil , CHOI, Seok-Hwan , HA, Kyoung-Su , KIM, Geon-Yong , WOO, Boo-Gon , LEE, Sang-Youn , KIM, Young-Bae , KANG, Koo-Hyun
IPC分类号： C07C51/43
CPC分类号： C07C51/48 , C07C57/04
摘要： The present invention relates to a method for producing (meth)acrylic acid comprising a process of recovering (meth)acrylic acid as an aqueous (meth)acrylic acid from a (meth)acrylic acid-containing gas mixture produced by the catalytic gas phase oxidation of at least one reactant selected from the group consisting of propane, propylene, isobutylene and (meth)acrolein, and a system usable for the method. The recovery process comprises the steps of: (1) feeding the (meth)acrylic acid-containing gas mixture into a quenching tower and condensing it in the quenching tower so as to recover an aqueous (meth)acrylic acid solution from the bottom of the quenching tower, in which some of the recovered aqueous solution of (meth)acrylic acid is recycled to the top part of the quenching tower so as to condense the (meth)acrylic acid-containing gas mixture; (2) passing the uncondensed part of the (meth)acrylic acid-containing gas mixture from the quenching tower through the top of the quenching tower to an absorption column; (3) absorbing (meth)acrylic acid contained in the uncondensed part of the (meth)acrylic acid-containing gas mixture in the absorption column with a absorption solvent; (4) feeding the (meth)acrylic acid solution resulting from the absorption in the step (3) to a desorption column; and (5) separating the solvent used in the step (3) from the (meth)acrylic acid solution in the desorption column, so that the substance from which the solvent has been removed in the desorption column is fed to the quenching tower, and the separated solvent is recycled to the absorption column. The inventive method is an efficient and economic method which allows a reduction in energy consumption in subsequent purification processed by maximizing the concentration of an aqueous solution of (meth)acrylic solution recovered at the bottom of the quenching tower and minimizing the concentration of (meth)acrylic acid lost from the vent gas of the absorption column.
摘要翻译：本发明涉及一种生产（甲基）丙烯酸的方法，包括从由（甲基）丙烯酸的气体混合物通过催化气相氧化制备的（甲基）丙烯酸水溶液回收（甲基）丙烯酸的方法的至少一种选自丙烷，丙烯，异丁烯和（甲基）丙烯醛的反应物，以及可用于该方法的系统。回收方法包括以下步骤：（1）将含（甲基）丙烯酸的气体混合物进料到淬火塔中，并将其冷凝在淬火塔中，以从底部回收（甲基）丙烯酸水溶液淬火塔，其中一些回收的（甲基）丙烯酸水溶液被再循环到淬火塔的顶部，以冷凝（甲基）丙烯酸的气体混合物; （2）将来自淬火塔的（甲基）丙烯酸混合气体的未冷凝部分通过淬火塔的顶部通入吸收塔; （3）用吸收溶剂吸收吸收塔中含（甲基）丙烯酸的气体混合物的未缩合部分中所含的（甲基）丙烯酸; （4）在步骤（3）中将由吸收产生的（甲基）丙烯酸溶液进料到解吸塔; 和（5）将步骤（3）中使用的溶剂与解吸塔中的（甲基）丙烯酸溶液分离，使得在解吸塔中除去溶剂的物质被供给至淬火塔，将分离的溶剂再循环至吸收塔。本发明的方法是一种有效和经济的方法，其允许通过使在淬火塔底部回收的（甲基）丙烯酸溶液的水溶液的浓度最大化并使（甲基）丙烯酸从吸收塔的排气中流失。

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