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公开(公告)号：US5546763A
公开(公告)日：1996-08-20
申请号：US321995
申请日：1994-10-12
申请人： Kazuo Kikuchi , Hiroshi Umino , Hiromitsu Shibuya , Masahito Makino , Yasuyuki Sakakura , Kiyoshi Takahashi
发明人： Kazuo Kikuchi , Hiroshi Umino , Hiromitsu Shibuya , Masahito Makino , Yasuyuki Sakakura , Kiyoshi Takahashi
CPC分类号： B01D9/0013 , B01D9/0072
摘要： Crystallization method and crystallization apparatus each use vertical plates for crystallization thereon. Both surfaces of the plate are used for different two liquids to flow down as films. Specifically, on one vertical surface, a feed liquid mixture containing crystallizable components therein flows down as a film, and on an opposite vertical surface, a cooling medium flows down as a film. Accordingly, the crystallizable component contained in the feed liquid mixture is cooled and crystallized to form crystal layers on the one vertical surface of the plate. The formed crystal layers are melted by a heating medium which flows down on the opposite vertical surface, and are collected as a melt. A pair of the plates may be used to form a unit to purify the liquid mixture on a large scale. A number of the units may be used to form a block which is suitable for a larger-scale crystallization processing. Further, a number of the blocks may be used to purify the liquid mixtures on a further larger-scale processing.
摘要翻译： 结晶方法和结晶装置均使用垂直板在其上结晶。 板的两个表面用于不同的两种液体作为膜流下。 具体地说，在一个垂直表面上，含有其中可结晶成分的进料液体混合物作为膜向下流动，在相对的垂直表面上，冷却介质作为膜流下。 因此，进料液体混合物中所含的可结晶组分被冷却并结晶，以在板的一个垂直表面上形成晶体层。 形成的晶体层通过在相对的垂直表面上向下流动的加热介质熔化，并且作为熔体收集。 可以使用一对板来形成用于大规模净化液体混合物的单元。 可以使用多个单元来形成适于大规模结晶处理的块。 此外，可以使用多个块来进一步大规模处理来净化液体混合物。
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公开(公告)号：US5393429A
公开(公告)日：1995-02-28
申请号：US970132
申请日：1992-11-02
CPC分类号： B01D11/043 , Y10S210/05
摘要： In a non-agitational, countercurrent flow type of liquid-liquid contacting tower, splitter plates with plural slits and/or holes through which light and heavy liquids flow, and baffles having the appropriate shapes and areas in order to cover the liquid flowing upward or downward, are alternately mounted horizontally inside the tower shell in vertical direction. The ratios of the opening area to the total cross-sectional area in the splitter plate are 10% to 40%, and the opening area of a baffles is larger than the aperture area of a splitter plate. The advantages of this invention are as follows: Because of the high contacting efficiency, a relatively smaller contactor has an equivalent performance with that of a larger contactor; there exists no risk of plugging due to scum accumulation, and maintenance is easy.
摘要翻译： 在非搅动式逆流流动型液 - 液接触塔中，具有多个狭缝和/或多个狭缝和/或孔的分离板，轻质和重质液体通过其流动，以及具有适当形状和面积的挡板以覆盖向上流动的液体或 向下，在垂直方向上交替地水平地安装在塔壳内。 分离板中的开口面积与总横截面积的比率为10％〜40％，挡板的开口面积大于分离板的开口面积。 本发明的优点如下：由于接触效率高，相对较小的接触器具有与较大接触器相当的性能; 由于浮渣积聚，不存在堵塞的风险，维护容易。
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公开(公告)号：US5048601A
公开(公告)日：1991-09-17
申请号：US481023
申请日：1990-02-16
申请人： Katsunobu Yamaguchi , Tateo Kurihara , Isamu Yanai , Kazuo Kikuchi , Tomoo Saito , Suguru Hamanaka , Teruo Nagai , Yasuyuki Sakakura , Takeshi Shibano , Yoji Kawatani , Tadahiko Kondoh
发明人： Katsunobu Yamaguchi , Tateo Kurihara , Isamu Yanai , Kazuo Kikuchi , Tomoo Saito , Suguru Hamanaka , Teruo Nagai , Yasuyuki Sakakura , Takeshi Shibano , Yoji Kawatani , Tadahiko Kondoh
CPC分类号： F28F13/14 , B01J8/067 , C07C51/252 , F28D7/0066 , F28D7/0091 , F28D7/16 , B01J2208/00044 , B01J2208/00212 , B01J2208/00495 , B01J2208/025
摘要： A shell-and-tube apparatus, more specifically, a shell-and-tube reactor, which includes a vessel, at least one intermediate tube plate sectioning the interior of the vessel into at least two compartments having different temperatures, a number of heat transferring tubes penetrating the intermediate tube plate or plates, and a fluid passing through the tubes which is heated or cooled by a heat transfer medium surrounding the tubes. At least one insulation plate or plates are provided on one or both sides of the intermediate tube plate so that the space between the intermediate tube plate or plates and, if two or more insulation plates are used, the space or spaces between the insulation plates may be utilized as a stagnation zone for the heat transfer medium, so as to make the temperature gradient through the intermediate tube plate or plates gentle and relax the thermal stress occurring in the body wall. The reactor is particularly useful for production of (meth)acrolain and/or (meth)acrylic acid by catalytic gas-phase oxidation of propylene or butenes.
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公开(公告)号：US06448438B1
公开(公告)日：2002-09-10
申请号：US09493011
申请日：2000-01-28
IPC分类号： C07C5121
摘要： A method for purifying acrylic acid, which comprises carrying out dehydration distillation of an aqueous solution of acrylic acid by means of a dehydration column, wherein a distillation column having a theoretical plate number of at least 3 plates is used as the dehydration column, and the operational temperature of a site corresponding to the second theoretical plate is adjusted to be from 50 to 78° C.
摘要翻译： 一种纯化丙烯酸的方法，其包括用脱水塔对丙烯酸水溶液进行脱水蒸馏，其中使用具有至少3个板的理论塔板数的蒸馏塔作为脱水塔， 将与第二理论塔板相对应的部位的工作温度调整为50〜78℃。
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公开(公告)号：US20050226793A1
公开(公告)日：2005-10-13
申请号：US11141614
申请日：2005-06-01
申请人： Yasuyuki Sakakura , Youji Kawatani , Teruo Saitou
发明人： Yasuyuki Sakakura , Youji Kawatani , Teruo Saitou
IPC分类号： B01J8/02 , B01J19/24 , C07B61/00 , C07C27/14 , C07C45/35 , C07C47/22 , C07C51/00 , C07C51/25 , C07C57/05 , F28D9/00 , B01J10/00
CPC分类号： F28D9/0031 , B01J19/249 , B01J2219/2453 , B01J2219/2455 , B01J2219/2459 , B01J2219/2462 , B01J2219/2481 , C07C45/35 , C07C51/00 , C07C47/22
摘要： A plate type catalytic reactor capable of improving reaction performance and extending the service life of the catalyst by controlling efficiently a temperature profile in a catalyst layer, is presented. A plate type catalytic reactor characterized in that a plurality of pairs of heat transfer plates, each formed of two sheets of corrugated plates joined to each other and each having a plurality of heat transfer medium flow passages, are arranged so that projected surface parts and recessed surface parts of the corrugated plates of adjacent heat transfer plates are opposed to each other to form a catalyst layer, wherein a circular or elliptic arc shape formed in the corrugated palates may be changed to increase the thickness of the catalyst layer from the inlet toward the outlet for a starting material gas fed to the catalyst layer.
摘要翻译： 提出了一种能够通过有效地控制催化剂层中的温度分布来提高反应性能并延长催化剂使用寿命的板式催化反应器。 一种板式催化反应器，其特征在于，由成对的两对传热板组成，每对传热板由彼此连接并且具有多个传热介质流动通道的两片波纹板组成，以使得突出的表面部分和凹陷 相邻传热板的波纹板的表面部分彼此相对以形成催化剂层，其中可以改变形成在波纹腭中的圆形或椭圆弧形状，从而将催化剂层的厚度从入口朝向 用于供给催化剂层的原料气体的出口。
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公开(公告)号：US20050038290A1
公开(公告)日：2005-02-17
申请号：US10863511
申请日：2004-06-09
CPC分类号： C07C51/235 , C07C45/35 , C07C51/25 , C07C47/22 , C07C57/04
摘要： In the process for producing (meth)acrolein or (meth)acrylic acid, which comprises feeding a raw material of the (meth)acrolein or (meth)acrylic acid, and a molecular oxygen-containing gas mixed with a diluting gas and compressed by a compressor, to an oxidation reactor to conduct a catalytic gas-phase oxidation reaction therebetween; feeding the obtained reaction gas to an absorption column to contact with water; recovering an aqueous solution of the (meth)acrolein or (meth)acrylic acid from a bottom of the absorption column and an exhaust gas from a top of the absorption column; and recycling a part or whole of the thus recovered exhaust gas to use as the diluting gas, the temperature of the mixed gas at a suction inlet of the compressor is controlled to a temperature higher than a dew point thereof. According to the process of the present invention, the compressor is prevented from suffering from clogging or damage thereto.
摘要翻译： 在制备（甲基）丙烯醛或（甲基）丙烯酸的方法中，其包括将（甲基）丙烯醛或（甲基）丙烯酸的原料和与稀释气体混合的含分子氧的气体进料并由 一个压缩机，到一个氧化反应器，在它们之间进行催化气相氧化反应; 将获得的反应气体进料到吸收塔以与水接触; 从吸收塔的底部回收（甲基）丙烯醛或（甲基）丙烯酸的水溶液和来自吸收塔的顶部的废气; 并且将这样回收的废气的一部分或全部再循环用作稀释气体，将压缩机的吸入口处的混合气体的温度控制在高于其露点的温度。 根据本发明的方法，防止压缩机堵塞或损坏压缩机。
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公开(公告)号：US07067696B2
公开(公告)日：2006-06-27
申请号：US10863511
申请日：2004-06-09
CPC分类号： C07C51/235 , C07C45/35 , C07C51/25 , C07C47/22 , C07C57/04
摘要： In the process for producing (meth)acrolein or (meth)acrylic acid, which comprises feeding a raw material of the (meth)acrolein or (meth)acrylic acid, and a molecular oxygen-containing gas mixed with a diluting gas and compressed by a compressor, to an oxidation reactor to conduct a catalytic gas-phase oxidation reaction therebetween; feeding the obtained reaction gas to an absorption column to contact with water; recovering an aqueous solution of the (meth)acrolein or (meth)acrylic acid from a bottom of the absorption column and an exhaust gas from a top of the absorption column; and recycling a part or whole of the thus recovered exhaust gas to use as the diluting gas, the temperature of the mixed gas at a suction inlet of the compressor is controlled to a temperature higher than a dew point thereof. According to the process of the present invention, the compressor is prevented from suffering from clogging or damage thereto.
摘要翻译： 在制备（甲基）丙烯醛或（甲基）丙烯酸的方法中，其包括将（甲基）丙烯醛或（甲基）丙烯酸的原料和与稀释气体混合的含分子氧的气体进料并由 一个压缩机，到一个氧化反应器，在它们之间进行催化气相氧化反应; 将获得的反应气体进料到吸收塔以与水接触; 从吸收塔的底部回收（甲基）丙烯醛或（甲基）丙烯酸的水溶液和来自吸收塔的顶部的废气; 并且将这样回收的废气的一部分或全部再循环用作稀释气体，将压缩机的吸入口处的混合气体的温度控制在高于其露点的温度。 根据本发明的方法，防止压缩机堵塞或损坏压缩机。
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8.发明授权Process for recovering liquid chemical products in chemical production facility 有权在化学生产设备中回收液体化学产品的过程公开(公告)号：US06968872B2
公开(公告)日：2005-11-29
申请号：US11037451
申请日：2005-01-19
申请人： Yasuyuki Sakakura , Shuhei Yada , Yasushi Ogawa , Yoshiro Suzuki
发明人： Yasuyuki Sakakura , Shuhei Yada , Yasushi Ogawa , Yoshiro Suzuki
IPC分类号： B01D3/32 , B08B9/08 , C07C45/78 , C07C47/22 , C07C51/42 , C07C57/07 , C07C67/48 , C07C69/54 , B65B1/04
CPC分类号： B01D3/32 , B08B9/08 , C07C45/78 , C07C45/82 , C07C51/44 , C07C51/46 , C07C67/54 , Y10T137/5762 , Y10T137/85954 , Y10T137/86187 , C07C47/22 , C07C57/04 , C07C69/54
摘要： The present invention provides a process for recovering liquid chemical products, in which the residual liquid chemical products remaining in respective handling devices in a chemical production facility can be efficiently and safely recovered therefrom without leakage thereof out of the system.In the process for recovering liquid chemical products in a chemical production facility according to the present invention, the chemical products are withdrawn from the handling devices through bottom discharge pipes (14), (15), (16) and (17) thereof, directly collected by the gravity thereof into a common inclined collection pipe (13) located at a position lower than the bottom discharge pipes and connected to the bottom discharge pipes, and then delivered by the gravity thereof through the inclined collection pipe (13) to a recovery tank (1) located at a position lower than the inclined collection pipe and connected to a lower end of the inclined collection pipe.
摘要翻译： 本发明提供了一种用于回收液体化学产品的方法，其中残留在化学生产设备中的各个处理装置中的残留液体化学品可以被有效且安全地从其中回收而不会从系统泄漏出来。 在根据本发明的化学生产设备中回收液体化学产品的过程中，化学产品通过底部排出管（14），（15），（16）和（17）直接从处理装置中排出 通过其重力被收集到位于比底部排放管低的位置并且连接到底部排出管的公共倾斜收集管（13）中，然后通过倾斜收集管（13）被重力地输送到回收管 罐（1）位于比倾斜收集管低的位置并连接到倾斜收集管的下端。
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公开(公告)号：US5910607A
公开(公告)日：1999-06-08
申请号：US508697
申请日：1995-07-28
IPC分类号： C07C51/46 , C07C57/07 , C07C51/21 , C07C51/235
CPC分类号： C07C51/46
摘要： In a process for producing acrylic acid, wherein propylene and/or acrolein is catalytically oxidized with molecular oxygen in a vapor phase and the gas resulting from the oxidation is cooled and/or absorbed in water to form a crude aqueous acrylic acid, followed by azeotropic distillation to remove the water with an entrainer of a boiling point of no higher than 130.degree. C. on the crude aqueous acrylic acid which may have, upon necessity, undergone removal of aldehydes contained therein to produce acrylic acid purified in that the crude aqueous acrylic acid is substantially dehydrated, the improvement which comprises conducting the azeotropic distillation under such conditions that concentrations of the entrainer and water in the bottom product of the azeotropic distillation are from 5% to 30% by weight and no higher than 0.5% by weight, respectively, where the theoretical number of plates in the azeotropic distillation column for dehydration used and that in the distillation column for separating acetic acid used are preferably from 5 to 20. Highly-purified acrylic acid can thus be obtained from the crude aqueous acrylic acid without causing unfavorable polymerization of acrylic acid.
摘要翻译： 在制备丙烯酸的方法中，其中丙烯和/或丙烯醛在气相中用分子氧催化氧化，并且由氧化产生的气体在水中冷却和/或吸收以形成粗水性丙烯酸，然后共沸 蒸馏以除去水，其中沸点不高于130℃的夹带剂在粗水性丙烯酸上，根据需要，可以将其除去其中所含的醛以产生纯化的丙烯酸，因为粗水性丙烯酸 酸基本脱水，其改进包括在共沸蒸馏的底部产物中的夹带剂和水的浓度分别为5重量％至30重量％且不高于0.5重量％的条件下进行共沸蒸馏 ，其中用于脱水的共沸蒸馏塔中的理论塔板数和蒸馏塔中的板的理论数量 所使用的分离乙酸优选为5〜20。因此，可以从粗水性丙烯酸获得高度纯化的丙烯酸，而不会引起丙烯酸的不利聚合。
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公开(公告)号：US07119227B2
公开(公告)日：2006-10-10
申请号：US10937657
申请日：2004-09-10
IPC分类号： C07C51/16
CPC分类号： C07C45/35 , B01J8/067 , B01J2208/00053 , B01J2208/00061 , B01J2208/00088 , B01J2208/00221 , B01J2208/00256 , B01J2208/0053 , B01J2208/025 , B01J2219/0002 , B01J2219/00259 , C07C51/252 , C07C47/22 , C07C57/04
摘要： The present invention provides a process for catalytic vapor phase oxidation which prevents runaway reaction or early deterioration of a catalyst, in the production of (meth)acrylic acid or the like from propylene or isobutylene by the catalytic vapor phase oxidation process using a multi-tubular reactor, which can lead to the production thereof constantly in high yield for a long period of time. Further, the present invention provides a process for catalytic vapor phase oxidation wherein raw material gas is introduced for oxidation into reaction tubes of a multi-tubular reactor which is equipped with, as arranged within the shell of the reactor, a plurality of reaction tubes having a catalyst packed therein and a plurality of baffle plates for changing the direction of the flow of a heating medium introduced into the shell, characterized in that the temperature of the catalyst packed in a reaction tube which is not connected with at least one baffle plate is measured at plural points in the direction of an axis of the reaction tube.
摘要翻译： 本发明提供催化气相氧化方法，其通过使用多管状催化气相氧化法从丙烯或异丁烯生产（甲基）丙烯酸等，防止催化剂失控反应或早期劣化 反应器，其可以长时间以高产率持续地生产。 此外，本发明提供了一种催化气相氧化方法，其中将原料气体引入氧化成多管式反应器的反应管中，该多管式反应器配备有布置在反应器壳体内的多个反应管，其具有 填充在其中的催化剂和用于改变引入壳体的加热介质的流动方向的多个挡板，其特征在于，填充在与至少一个挡板相连的反应管中的催化剂的温度为 在反应管的轴线方向的多个点处测量。
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