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公开(公告)号：US06667419B1
公开(公告)日：2003-12-23
申请号：US09605219
申请日：2000-06-28
IPC分类号： C07C5142
CPC分类号： C07C45/783 , B01D53/18 , C07C51/42 , C07C47/22 , C07C57/04
摘要： A method for the absorption of (meth)acrylic acid and/or (meth)acrolein and an apparatus thereof which, in an absorption column adapted to cause an (meth)acrylic acid and/or (meth)acrolein-containing gas obtained in consequence of catalytic gas phase oxidation to come into countercurrent contact with a solvent, contemplate using a packing of relatively high efficiency in absorption disposed on the upstream side of the flow of a liquid containing the solvent and a packing and/or trays of relatively low performance of forming polymerization disposed on the downstream side thereof, in the column.
摘要翻译： 用于吸收（甲基）丙烯酸和/或（甲基）丙烯醛的方法及其装置，其在适于引起由此得到的（甲基）丙烯酸和/或（甲基）丙烯醛的气体的吸收塔中 的催化气相氧化以与溶剂逆流接触，考虑使用设置在含有溶剂的液体的流动的上游侧的吸收效率相对较高的填料和相对较低性能的填料和/或塔盘 在塔的下游侧形成聚合。
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公开(公告)号：US06566551B2
公开(公告)日：2003-05-20
申请号：US09724468
申请日：2000-11-29
申请人： Takeshi Nishimura , Yukihiro Matsumoto , Sei Nakahara , Misao Inada , Harunori Hirao , Mamoru Takamura
发明人： Takeshi Nishimura , Yukihiro Matsumoto , Sei Nakahara , Misao Inada , Harunori Hirao , Mamoru Takamura
IPC分类号： C07C5116
CPC分类号： C07C51/252 , C07C57/04
摘要： For use in a process for the production of (meth)acrylic acid comprising at least a step for the reaction of (meth)acrylic acid by catalytic gas phase oxidation and a step for the absorption thereof, a method for preventing an effluent gas pipe from blocking is disclosed, which method is characterized by causing part or the whole of the gas discharged from the step for absorption, while being circulated via the effluent gas pipe to the step for the reaction or being discarded, to be subjected to temperature elevation and application of pressure and/or mist separation. Particularly by setting the temperature of the waste gas from the absorption column at a level in the range of 30-70° C., it is made possible to decrease the contents of water, low boiling substances, and subliming substances entrained by the waste gas and, coupled with the temperature elevation and the application of pressure implemented in the effluent gas pipe, attain effective prevention of the interior of the effluent gas pipe from blockage and corrosion.
摘要翻译： 为了用于生产（甲基）丙烯酸的方法，至少包括通过催化气相氧化反应（甲基）丙烯酸的步骤和用于吸收的步骤，用于防止流出气体管道的方法 公开了这种方法，其特征在于，使得从步骤吸收的气体的一部分或全部通过废气管循环到用于反应或被丢弃的步骤中，以进行升温和施加 的压力和/或雾分离。 特别是通过将来自吸收塔的废气的温度设定在30〜70℃的范围内，能够降低水，低沸点物质和由废气夹带的升华物质的含量 再加上在排气管道中实施的温度升高和施加压力，有效防止排气管内部堵塞和腐蚀。
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3.发明授权公开(公告)号：US06372944B1
公开(公告)日：2002-04-16
申请号：US09667283
申请日：2000-09-22
IPC分类号： C07C5142
CPC分类号： C07C51/44 , B01D3/20 , B01D3/4205 , C07C67/54 , Y10S203/11 , C07C57/04 , C07C69/54
摘要： In the purification of an easily polymerizable compound such as (meth)acrylic acid by the use of a purification column adapted to withdraw a liquid from the middle portion of the column, a novel liquid withdrawing tray adapted to prevent the compound from polymerization effectively and permit the purification to be stably performed for a long time, a purification column using this tray, and a method for purifications using this purification column are provided. The liquid withdrawing tray for the purification column is composed of a liquid receiving plate and a liquid withdrawing tube for withdrawing the liquid from the liquid receiving plate.
摘要翻译： 在通过使用用于从塔的中间部分抽出液体的净化塔来纯化易于聚合的化合物如（甲基）丙烯酸的方法中，适用于有效地防止化合物聚合的新型液体回收塔，并允许 提供长时间稳定地进行的纯化，使用该托盘的纯化塔和使用该纯化塔的纯化方法。 用于净化塔的液体排出托盘由液体接收板和用于从液体接收板中取出液体的液体抽出管构成。
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公开(公告)号：US20060009655A1
公开(公告)日：2006-01-12
申请号：US11221213
申请日：2005-09-07
CPC分类号： F28D7/0066 , B01J8/067 , B01J2208/00212 , B01J2208/00256 , B01J2208/00716 , B01J2219/00006 , C07C45/35 , C07C51/252 , C07C47/22 , C07C57/04
摘要： A method for quickly starting up a reactor and a reactor system therefor are provided. A shell-and-tube reactor in the system is adapted to circulate a heat medium having a solid point in the range of 50-250° C. to the outside of the reaction tubes and characterized by initiating temperature elevation of the reactor by introducing a gas of a temperature in the range of 100-400° C. to the reaction tubes' side and then circulating the heat medium in a heated state to the outside of the reaction tubes. By introducing a gas of an elevated temperature preparatorily to the reaction tubes, it is made possible to prevent the heat medium after circulation from being solidified again and enable the reactor to be quickly started up.
摘要翻译： 提供了一种用于快速启动反应器及其反应器系统的方法。 系统中的管壳式反应器适于将具有在50-250℃范围内的固点的热介质循环到反应管的外部，并且其特征在于通过引入反应器的温度升高 将温度在100-400℃范围内的气体加到反应管侧，然后将加热的热介质循环到反应管的外部。 通过将升温的气体预先引入反应管，可以防止循环后的热介质再次固化，使反应器快速启动。
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公开(公告)号：US06848501B2
公开(公告)日：2005-02-01
申请号：US10356428
申请日：2003-01-31
申请人： Harunori Hirao , Yukihiro Matsumoto , Sei Nakahara , Osamu Dodo , Tetsuji Mitsumoto , Takeshi Nishimura , Kazuhiko Sakamoto , Hiroo Iwato
发明人： Harunori Hirao , Yukihiro Matsumoto , Sei Nakahara , Osamu Dodo , Tetsuji Mitsumoto , Takeshi Nishimura , Kazuhiko Sakamoto , Hiroo Iwato
CPC分类号： F28D9/0068 , B01J19/002 , B01J2219/00252 , F28D7/1607 , F28D7/1623 , F28D9/0062 , F28F9/0278 , F28F19/00 , F28F2250/102
摘要： In an apparatus provided with a plate type heat exchanger as a heater and/or a cooler and operated to treat a gas containing an easily blocking substance, a method for preventing the plate type heat exchanger from being blocked is disclosed which is characterized by i) setting the width of a flow path on a plate of the plate type heat exchanger in the apparatus in a range of 6-25 mm and ii) setting the average flow rate of the gas passing the plate type heat exchanger in the apparatus per unit cross-sectional area of the flow path on the plate in the range of 3-15 m/s. In the exchange of heat of an easily blocking substance by the use of a plate type heat exchanger, a method for preventing the plate type heat exchanger from blockage is disclosed which has the plate type heat exchanger provided in the port for introducing a gas containing an easily blocking substance with a gas dispersion plate. This invention, in the heat exchange of an effluent gas emanating from a process for the production of (meth)acrylic acid or an ester thereof or the disposal of the gas, significantly allays blockage of the interior of the plate type heat exchanger.
摘要翻译： 在设置有作为加热器和/或冷却器的板式热交换器并且被操作以处理含有易阻塞物质的气体的装置中，公开了一种防止板式热交换器被堵塞的方法，其特征在于i） 将设备中板式热交换器的板上的流路宽度设置在6-25mm的范围内，以及ii）将通过板式热交换器的气体的平均流量设置在每单位十字的装置中 板上流路的截面面积在3-15 m / s的范围内。 在通过使用板式热交换器交换容易堵塞物质的热的情况下，公开了一种防止板式热交换器堵塞的方法，其具有设置在用于引入含有 用气体分散板容易地堵塞物质。 本发明在从（甲基）丙烯酸或其酯的制备方法产生的流出气体的热交换或气体的处理中显着地阻止了板式热交换器的内部堵塞。
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公开(公告)号：US07468167B2
公开(公告)日：2008-12-23
申请号：US11221213
申请日：2005-09-07
CPC分类号： F28D7/0066 , B01J8/067 , B01J2208/00212 , B01J2208/00256 , B01J2208/00716 , B01J2219/00006 , C07C45/35 , C07C51/252 , C07C47/22 , C07C57/04
摘要： A method for quickly starting up a reactor and a reactor system therefor are provided. A shell-and-tube reactor in the system is adapted to circulate a heat medium having a solid point in the range of 50-250° C. to the outside of the reaction tubes and characterized by initiating temperature elevation of the reactor by introducing a gas of a temperature in the range of 100-400° C. to the reaction tubes' side and then circulating the heat medium in a heated state to the outside of the reaction tubes. By introducing a gas of an elevated temperature preparatorily to the reaction tubes, it is made possible to prevent the heat medium after circulation from being solidified again and enable the reactor to be quickly started up.
摘要翻译： 提供了一种用于快速启动反应器及其反应器系统的方法。 系统中的管壳式反应器适于将具有在50-250℃范围内的固点的热介质循环到反应管的外部，并且其特征在于通过引入反应器的温度升高 将温度在100-400℃范围内的气体加到反应管侧，然后将加热的热介质循环到反应管的外部。 通过将升温的气体预先引入反应管，可以防止循环后的热介质再次固化，使反应器快速启动。
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公开(公告)号：US06946573B2
公开(公告)日：2005-09-20
申请号：US09845694
申请日：2001-04-30
IPC分类号： B01J19/00 , B01J12/00 , B01J19/24 , C07C45/35 , C07C47/22 , C07C51/235 , C07C51/25 , C07C57/05 , C07C57/055 , F28D7/00 , C07C57/02
CPC分类号： F28D7/0066 , B01J8/067 , B01J2208/00212 , B01J2208/00256 , B01J2208/00716 , B01J2219/00006 , C07C45/35 , C07C51/252 , C07C47/22 , C07C57/04
摘要： A method for quickly starting up a reactor and a reactor system therefor are provided. A shell-and-tube reactor in the system is adapted to circulate a heat medium having a solid point in the range of 50-250° C. to the outside of the reaction tubes and characterized by initiating temperature elevation of the reactor by introducing a gas of a temperature in the range of 100-400° C. to the reaction tubes' side and then circulating the heat medium in a heated state to the outside of the reaction tubes. By introducing a gas of an elevated temperature preparatorily to the reaction tubes, it is made possible to prevent the heat medium after circulation from being solidified again and enable the reactor to be quickly started up.
摘要翻译： 提供了一种用于快速启动反应器及其反应器系统的方法。 系统中的管壳式反应器适于将具有在50-250℃范围内的固点的热介质循环到反应管的外部，并且其特征在于通过引入反应器的温度升高 将温度在100-400℃范围内的气体加到反应管侧，然后将加热的热介质循环到反应管的外部。 通过将升温的气体预先引入反应管，可以防止循环后的热介质再次固化，使反应器快速启动。
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公开(公告)号：US06407287B2
公开(公告)日：2002-06-18
申请号：US09800705
申请日：2001-03-07
IPC分类号： C07C5116
CPC分类号： C07C51/252 , C07C51/46 , C07C57/04
摘要： In a method for producing acrylic acid by the steps of a reaction of catalytic gas phase oxidation, absorbing the acrylic acid with an absorbent, and dehydrating the acrylic acid-containing aqueous solution, the method is characterized that the step of dehydration comprises adding and an azeotropic solvent, distilling the resultant mixture, and adjusting the acrylic acid concentration at the top of the column in the range of 0.06-0.80 wt. %, thereby preventing the bottoms of the azeotropic dehydration column from substantially containing the azeotropic solvent and water. As results, the acrylic acid is kept from forming a polymer in any of the distillation columns involved in the production, and effective utilization of acrylic acid.
摘要翻译： 在通过催化气相氧化反应，吸收丙烯酸和吸收剂的步骤和使含丙烯酸水溶液脱水的步骤来制备丙烯酸的方法中，脱水步骤包括加入和 共沸溶剂，蒸馏得到的混合物，并调节柱顶部的丙烯酸浓度为0.06-0.80wt。 ％，从而防止共沸脱水塔的底部基本上含有共沸溶剂和水。 结果，丙烯酸在生产中涉及的任何蒸馏塔中都不会形成聚合物，有效利用丙烯酸。
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公开(公告)号：US06676808B2
公开(公告)日：2004-01-13
申请号：US09871213
申请日：2001-05-31
申请人： Kei Hamamoto , Yukihiro Matsumoto , Sei Nakahara , Misao Inada
发明人： Kei Hamamoto , Yukihiro Matsumoto , Sei Nakahara , Misao Inada
IPC分类号： B01D334
CPC分类号： C07C51/46 , B01D3/322 , B01D3/4227 , C07C51/50 , Y10S203/07 , Y10S203/22 , C07C57/04
摘要： A method for starting up a distilling column destined to handle an easily polymerizing compound-containing solution characterized by supplying at the start of the operation of the distilling column a polymerization inhibitor to the bottom liquid of the distilling column having a temperature of not higher than 80° C. Further, by supplying a reflux liquid through the top of the distilling column or the middle stage of the column prior to the start of the temperature elevation of the distilling column, thereby preventing the polymerization of the easily polymerizing compound more effectively.
摘要翻译： 一种用于启动用于处理容易聚合的含化合物的溶液的蒸馏塔的方法，其特征在于，在蒸馏塔开始操作时将聚合抑制剂供入具有不高于80℃的蒸馏塔的底部液体 ℃。此外，在蒸馏塔开始升温之前，通过在蒸馏塔的顶部或塔的中间阶段供应回流液体，从而更有效地防止了容易聚合的化合物的聚合。
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公开(公告)号：US06613196B2
公开(公告)日：2003-09-02
申请号：US09901267
申请日：2001-07-09
申请人： Kei Hamamoto , Yukihiro Matsumoto , Sei Nakahara , Misao Inada
发明人： Kei Hamamoto , Yukihiro Matsumoto , Sei Nakahara , Misao Inada
IPC分类号： B01D342
CPC分类号： B01D3/343 , B01D3/14 , C07C51/44 , Y10S203/07 , Y10S203/22 , C07C57/04
摘要： A method for stopping a purifying column handling an easily polymerizing compound-containing solution is disclosed, which method is characterized by lowering the inner oxygen concentration of the column below the limit of oxygen concentration by supplying an inert gas to the column while the concentration of the gas of easily polymerizing compound is in the range of 100% to the lower limit of the flammable range in volume % of the purifying column or by further supplying a reflux liquid thereby cooling the interior of the column at a rate in the range of 0.01-10° C./min. This invention enjoys exceptionally high economic value in respect that it is capable of preventing the easily polymerizing compound from the occurrence of polymerization in the purifying column, precluding the interior of the purifying column from being clogged by adhesion of a polymer, and moreover avoiding the possibility of explosion.
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