专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

41. 发明授权

US07563927B2 Process for producing (meth)acrylic acid or (meth)acrolein 有权
标题翻译：（甲基）丙烯酸或（甲基）丙烯醛的制造方法
公开(公告)号：US07563927B2
公开(公告)日：2009-07-21
申请号：US11547004
申请日：2004-10-27
申请人： Yasushi Ogawa , Shuhei Yada , Yoshiro Suzuki , Kenji Takasaki , Kimikatsu Jinno
发明人： Yasushi Ogawa , Shuhei Yada , Yoshiro Suzuki , Kenji Takasaki , Kimikatsu Jinno
IPC分类号： C07C51/16
CPC分类号： C07C45/35 , C07C51/215 , C07C51/252 , C07C47/22 , C07C57/04
摘要： A producing method of (meth)acrolein or (meth)acrylic acid where by use of a multi-tubular reactor that has a plurality of reaction tubes filled with a catalyst, catalytic gas phase oxidation of propylene, propane, isobutylene or (meth)acrolein is carried out in the presence of a composite oxide catalyst by use of molecular oxygen or a gas containing molecular oxygen, in which method (meth)acrolein or (meth)acrylic acid can be obtained stably in high yield for a long period of time without allowing the activity of the catalyst to decrease locally (disproportionately) and extremely. A temperature difference between a temperature of a heat medium at the beginning of operation and a peak temperature of the catalyst is set in a range of 20 to 80° C., and during operations a change of the peak temperature T of the catalyst in a tube axis direction is maintained in a definite range.
摘要翻译：（甲基）丙烯醛或（甲基）丙烯酸的制备方法，其中通过使用多管反应器，其具有填充有催化剂的多个反应管，丙烯，丙烷，异丁烯或（甲基）丙烯醛的催化气相氧化通过使用分子氧或含分子氧的气体在复合氧化物催化剂存在下进行，其中可以以高产率长时间稳定地获得（甲基）丙烯醛或（甲基）丙烯酸，而不用允许催化剂的活性局部（不成比例地）减少和极度降低。操作开始时的热介质的温度与催化剂的峰值温度之间的温差设定在20〜80℃的范围内，在操作中，催化剂的峰值温度T的变化为管轴方向保持在一定范围内。

42. 发明授权

US07549341B2 Method of maintaining a multitubular reactor 有权
标题翻译：维持多管反应器的方法
公开(公告)号：US07549341B2
公开(公告)日：2009-06-23
申请号：US11597939
申请日：2004-10-25
申请人： Yasushi Ogawa , Shuhei Yada , Yoshiro Suzuki , Kenji Takasaki , Kimikatsu Jinno
发明人： Yasushi Ogawa , Shuhei Yada , Yoshiro Suzuki , Kenji Takasaki , Kimikatsu Jinno
IPC分类号： G01L13/00
CPC分类号： C07C45/35 , B01J8/06 , B01J2208/00539 , B01J2208/00654 , B01J2208/00734 , B01J2208/00982 , B01J2208/021 , B01J2219/002 , B01J2219/00213 , B01J2219/00225 , B01J2219/0024 , B01J2219/00268 , C07C51/00 , C07C51/252 , C07C47/22 , C07C57/04
摘要： The object of this invention is to provide a method of maintaining a multi-tubular reactor which can ensure the uniformity of states of reaction in the reaction tubes in the multi-tubular reactor.This invention is a method of maintaining a multi-tubular reactor in good condition by selecting a part of reaction tubes in a multi-tubular reactor at random, measuring a differential pressure occurring in each reaction tube when passing gas therethrough, separating any reaction tube showing an abnormal differential pressure as compared with the average of differential pressures in reaction tubes packed with an fresh catalyst of the same kind, giving adequate treatment to the separated reaction tube and returning it into the reactor with any other selected reaction tube falling within a normal range.
摘要翻译：本发明的目的是提供一种维持多管式反应器的方法，其可以确保多管式反应器中的反应管中的反应状态的均匀性。本发明是通过在多管式反应器中随机选择反应管的一部分来测量在每个反应管中产生的差压，使气体通过其中的压差，分离任何反应管，显示出多个反应管，从而维持多管式反应器处于良好状态的方法与装有相同种类的新鲜催化剂的反应管中的压差的平均值相比，产生异常压差，给分离的反应管提供足够的处理并将其返回到反应器中，任何其它选择的反应管落在正常范围内。

43. 发明授权

US07473338B2 Distillation apparatus for readily polymerizable compound 失效
标题翻译：用于易聚合的化合物的蒸馏装置
公开(公告)号：US07473338B2
公开(公告)日：2009-01-06
申请号：US11188710
申请日：2005-07-26
申请人： Shuhei Yada , Yasushi Ogawa , Yoshiro Suzuki , Kenji Takasaki , Kiyoshi Takahashi
发明人： Shuhei Yada , Yasushi Ogawa , Yoshiro Suzuki , Kenji Takasaki , Kiyoshi Takahashi
IPC分类号： B01D3/10 , B01D3/42 , C07C51/44 , C07C51/50
CPC分类号： B01D3/225 , B01D3/10 , B01D3/14 , B01D3/146 , B01D3/22 , B01D3/322 , B01D3/4216 , C07C51/44 , Y10S203/22 , C07C57/04
摘要： A distillation apparatus for subjecting a crude readily polymerizable compound to distillation under vacuum conditions to purify it, the distillation apparatus having a distillation column and a vacuum generator and an exhaust gas conduit of the vacuum generator connected to a connecting conduit therebetween through a pressure control valve. A method provides purifying of a readily polymerizable compound by subjecting a crude readily polymerizable compound to distillation under vacuum conditions to purify it, the method including using a distillation apparatus having a distillation column and a vacuum generator and an exhaust gas conduit of the vacuum generator connected to a connecting conduit therebetween through a pressure control valve and controlling the action of the pressure control valve based on a pressure of the distillation column.
摘要翻译：一种蒸馏装置，用于使粗易于聚合的化合物在真空条件下进行蒸馏以净化，所述蒸馏装置具有蒸馏塔和真空发生器以及通过压力控制阀连接到其间的连接导管的真空发生器和废气导管。一种方法是通过使粗易于聚合的化合物在真空条件下进行蒸馏来纯化易于聚合的化合物，该方法包括使用具有蒸馏塔和真空发生器的蒸馏装置和连接到真空发生器的排气导管通过压力控制阀连接到它们之间的连接导管，并且基于蒸馏塔的压力控制压力控制阀的作用。

44. 发明授权

US07348455B2 Process for producing (meth)acrylic acids 有权
标题翻译：（甲基）丙烯酸的制造方法
公开(公告)号：US07348455B2
公开(公告)日：2008-03-25
申请号：US10859221
申请日：2004-06-03
申请人： Shuhei Yada , Yasushi Ogawa , Yoshiro Suzuki , Kiyoshi Takahashi , Kenji Takasaki
发明人： Shuhei Yada , Yasushi Ogawa , Yoshiro Suzuki , Kiyoshi Takahashi , Kenji Takasaki
IPC分类号： C07C51/16 , C07C57/02
CPC分类号： C07C51/252 , B01D3/14 , B01D3/225 , B01D3/24 , B01D3/322 , B01J8/228 , B01J14/00 , B01J19/006 , B01J19/0066 , B01J19/18 , B01J2208/00283 , B01J2208/003 , B01J2208/0084 , B01J2219/00006 , B01J2219/00094 , B01J2219/00247 , B01J2219/00252 , B01J2219/00774 , C07C57/04
摘要： A process for producing (meth)acrylic acid or (meth)acrylic acid esters, which comprises a reaction step comprising vapor phase catalytic oxidation of propylene, propane or isobutylene and, if necessary, a reaction step comprising an esterification step, characterized in that at the time when a high boiling mixture (hereinafter referred to as a high boiling material) containing a Michael addition product, is decomposed in a decomposition reactor to recover (meth)acrylic acids, while forcibly imparting a liquid flow in the circumferential direction to a liquid reaction residue in the decomposition reactor, the liquid reaction residue is discharged. In a process for recovering a valuable substance by thermally decomposing the high boiling material containing the Michael addition product of (meth)acrylic acids, it is possible to transfer the decomposition residue from the decomposition reactor to the storage tank without clogging, whereby a long-term continuous operation is possible.
摘要翻译：一种制备（甲基）丙烯酸或（甲基）丙烯酸酯的方法，其包括反应步骤，其包括丙烯，丙烷或异丁烯的气相催化氧化，如果需要，包括酯化步骤的反应步骤，其特征在于在当在分解反应器中分解含有迈克尔加成产物的高沸点混合物（以下称为高沸点物质）以回收（甲基）丙烯酸时，同时强制地将液体在圆周方向上的液体流向液体反应残渣在分解反应器中，液体反应残渣排出。在通过热分解包含（甲基）丙烯酸的迈克尔加成产物的高沸点材料来回收有价物质的方法中，可以将分解残留物从分解反应器转移到储罐而不堵塞，长期连续运行是可能的。

45. 发明申请

US20080045748A1 Process for Producing (Meth)Acrolein or (Meth)Acrylic Acid 有权
标题翻译：生产（甲基）丙烯醛或（甲基）丙烯酸的方法
公开(公告)号：US20080045748A1
公开(公告)日：2008-02-21
申请号：US11596287
申请日：2004-10-25
申请人： Kimikatsu Jinno , Yasushi Ogawa , Yoshiro Suzuki , Shuhei Yada
发明人： Kimikatsu Jinno , Yasushi Ogawa , Yoshiro Suzuki , Shuhei Yada
IPC分类号： C07C51/21 , C07C45/33 , C07C51/215 , C07C45/35
CPC分类号： B01J8/0085 , B01J8/065 , B01J8/067 , B01J2208/00212 , B01J2208/00796 , B01J2208/00849 , B01J2219/00245 , C07C45/33 , C07C45/35 , C07C51/215 , C07C51/252 , C07C47/22 , C07C57/04
摘要： An object of the invention is to provide a production method for (meth)acrolein or (meth)acrylic acid which can continue an operation without causing a decomposition reaction of acrolein or the like. According to the invention, provided is a production method for (meth)acrolein or (meth)acrylic acid, in which (meth)acrolein or (meth) acrylic acid is obtained by performing a catalytic gas phase oxidation on propylene, propane or isobutylene by using oxygen by means of a heat-exchange type multi-tubular reactor, having a tube bundle portion in which a multiple of reaction tubes each filled with a catalyst are aligned in parallel to one another and a tube plate which is adjacent to a downstream side of the tube bundle portion of the reaction tubes and forms a lead-out portion for a reaction gas, in which the tube bundle portion of the reaction tubes has a hollow-columnar constitution as a whole, and which is characterized in that a rectifier is provided on a tube plate.
摘要翻译：本发明的目的是提供一种可以继续操作而不引起丙烯醛等的分解反应的（甲基）丙烯醛或（甲基）丙烯酸的制备方法。根据本发明，提供了（甲基）丙烯醛或（甲基）丙烯酸的制备方法，其中通过对丙烯，丙烷或异丁烯进行催化气相氧化获得（甲基）丙烯醛或（甲基）丙烯酸）使用具有管束部分的热交换型多管式反应器的氧气，其中每个填充有催化剂的多个反应管彼此平行排列，并且与下游侧相邻的管板反应管的管束部分形成反应气体的引出部分，其中反应管的管束部分作为整体具有中空柱状结构，其特征在于整流器是设在管板上。

46. 发明授权

US07319162B2 Method of decomposing by-product during the production of (meth)acrylic ester 有权
标题翻译：在（甲基）丙烯酸酯生产过程中分解副产物的方法
公开(公告)号：US07319162B2
公开(公告)日：2008-01-15
申请号：US10870930
申请日：2004-06-21
申请人： Shuhei Yada , Kenji Takasaki , Yasushi Ogawa , Yoshiro Suzuki
发明人： Shuhei Yada , Kenji Takasaki , Yasushi Ogawa , Yoshiro Suzuki
IPC分类号： C07C67/48
CPC分类号： C07C67/327 , C07C67/60 , C07C69/54
摘要： A method of decomposing a Michael addition reaction product formed as a by-product in the production step of a(meth)acrylic ester and recovering (meth)acrylic acid, a (meth)acrylic ester and an alcohol, in which the formation of an olefin as a by-product can be suppressed. A method of thermally decomposing a by-product at the time of production of a (meth)acrylic ester using an alcohol bearing a branched chain and having 3 or more carbon atoms, wherein the decomposition reaction is carried out in the absence of a catalyst.
摘要翻译：在（甲基）丙烯酸酯的制备步骤中分解作为副产物形成的迈克尔加成反应产物和回收的（甲基）丙烯酸，（甲基）丙烯酸酯和醇的方法，其中形成可以抑制作为副产物的烯烃。使用带有支链并具有3个或更多个碳原子的醇生产（甲基）丙烯酸酯时副产物热分解的方法，其中分解反应在不存在催化剂的情况下进行。

47. 发明授权

US07041849B2 Method of recovering polymerization inhibitor and method of producing acrylic acid 有权
标题翻译：回收聚合抑制剂的方法和制备丙烯酸的方法
公开(公告)号：US07041849B2
公开(公告)日：2006-05-09
申请号：US10845571
申请日：2004-05-14
申请人： Shuhei Yada , Kenji Takasaki , Yasushi Ogawa , Yoshiro Suzuki
发明人： Shuhei Yada , Kenji Takasaki , Yasushi Ogawa , Yoshiro Suzuki
IPC分类号： C07C51/42 , C07C51/16
CPC分类号： C07C51/44 , C07C51/215 , C07C51/252 , C07C51/50 , C07C57/04
摘要： In an acrylic acid production process which comprises the step of producing acrylic acid by catalytic vapor-phase oxidation of propane, propylene, and/or acrolein; and purifying the acrylic acid produced in the step of producing with distillation in the presence of the polymerization inhibitor for preventing polymerization of the acrylic acid, a viscosity at 20° C. of the bottoms which comprises the polymerization inhibitor, discharged in the step of purifying, is adjusted to 2 Pa·s (2,000 cP) or less and the polymerization inhibitor is extracted using an aqueous medium.According to the method, in an acrylic acid production process, an extraction operation for recovery of the polymerization inhibitor can be continuously conducted in a stable manner.
摘要翻译：在丙烯酸生产方法中，其包括通过丙烷，丙烯和/或丙烯醛的催化气相氧化制备丙烯酸的步骤; 并且在用于防止丙烯酸聚合的聚合抑制剂存在下，在蒸馏生产步骤中纯化生产的丙烯酸，在包含聚合抑制剂的底部的20℃下的粘度在净化步骤中排出，调节至2Pa.s（2,000cP）以下，使用水性介质提取聚合抑制剂。根据该方法，在丙烯酸制造方法中，可以稳定地连续进行回收阻聚剂的萃取操作。

48. 发明授权

US07015357B2 Processes for producing (meth)acrylic acid 有权
标题翻译：（甲基）丙烯酸的制造方法
公开(公告)号：US07015357B2
公开(公告)日：2006-03-21
申请号：US10898341
申请日：2004-07-26
申请人： Shuhei Yada , Kenji Takasaki , Yasushi Ogawa , Yoshiro Suzuki
发明人： Shuhei Yada , Kenji Takasaki , Yasushi Ogawa , Yoshiro Suzuki
IPC分类号： C07C51/42 , C07C57/02
CPC分类号： C07C51/44 , C07C57/04
摘要： In the purification and distillation step of acrylic acid (including (meth)acrylic acid), stable continuous operation for a long period is enabled by inhibiting the undesirable polymerization reaction of acrylic acid thereby to prevent the device from a trouble such as clogging. A process for producing acrylic acid which comprises purifying crude acrylic acid prepared by vapor-phase catalytic oxidation by distillation, wherein the concentration of β-acryloxypropionic acid in the feed stream to a distillation column mainly for the separation of water from acrylic acid is controlled to be at most one-fiftieth of the concentration of acrylic acid; the concentration of β-acryloxypropionic acid in the feed stream to a distillation column mainly for the separation of acetic acid from acrylic acid is controlled to be at most one-fortieth of the concentration of acrylic acid; and the concentration of β-acryloxypropionic acid in the feed stream to a distillation column mainly for the separation of acrylic acid from water, acetic acid and a solvent is controlled to be at most one-fiftieth of the concentration of acrylic acid.
摘要翻译：在丙烯酸（包括（甲基）丙烯酸）的纯化和蒸馏步骤中，通过抑制丙烯酸的不期望的聚合反应，能够长时间的稳定的连续操作，从而防止装置等堵塞的问题。一种制备丙烯酸的方法，其包括通过蒸馏气相催化氧化制备的粗丙烯酸的纯化，其中将主要用于从丙烯酸分离水的蒸馏塔的进料流中的β-丙烯酰氧基丙酸的浓度控制为至多为丙烯酸浓度的五十分之一; 将主要用于从丙烯酸分离乙酸的蒸馏塔的进料流中的β-丙烯酰氧基丙酸的浓度控制在丙烯酸浓度的至多四十分之一; 并且将主要用于将丙烯酸与水，乙酸和溶剂分离的蒸馏塔的进料流中的β-丙烯酰氧基丙酸的浓度控制在丙烯酸浓度的至多五十分之一。

49. 发明授权

US06989463B2 Method for handling high-viscosity substances 有权
标题翻译：高粘度物质处理方法
公开(公告)号：US06989463B2
公开(公告)日：2006-01-24
申请号：US10978281
申请日：2004-11-01
申请人： Shuhei Yada , Yasushi Ogawa , Kenji Takasaki , Yoshiro Suzuki
发明人： Shuhei Yada , Yasushi Ogawa , Kenji Takasaki , Yoshiro Suzuki
IPC分类号： C07C57/02 , C07C51/42 , C07C69/34 , C07C67/48
CPC分类号： C07C51/50 , C07C67/62 , C07C57/04 , C07C69/54
摘要： There is provided a method for handling high-viscosity substances discharged from a production process of acrylic acid or esters thereof by gas-phase catalytic oxidation, which method is improved such that upon transporting the high-viscosity substances in a molten state to a storage tank through a pipeline, the retention or clogging of the high-viscosity substances in the pipeline can be effectively prevented without adding a solvent thereto, resulting in smooth transportation thereof through the pipeline.In the method for handling high-viscosity substances discharged from a production process of acrylic acid or esters thereof by gas-phase catalytic oxidation according to the present invention, when the high-viscosity substances are transported to a storage tank through a pipeline, contents of acrylic acid polymers and a polymerization inhibitor in the high-viscosity substances are controlled to not less than 40% by weight and not less than 4% by weight, respectively, and the high-viscosity substances are maintained at a temperature of not less than 110° C.
摘要翻译：提供了一种通过气相催化氧化处理由丙烯酸或其酯的生产方法排出的高粘度物质的方法，该方法得到改进，使得在熔融状态下将高粘度物质输送到储罐通过管道，可以有效地防止管道中高粘度物质的滞留或堵塞，而不需要加入溶剂，从而使其通过管道的顺利输送。在根据本发明的通过气相催化氧化处理由丙烯酸或其酯的制备方法排出的高粘度物质的方法中，当高粘度物质通过管道输送到储罐时，高粘度物质中的丙烯酸聚合物和阻聚剂分别控制在不低于40重量％且不小于4重量％，并且高粘度物质保持在不低于110℃的温度 C。

50. 发明申请

US20050267313A1 Process for producing (meth)acrolein or (meth)acrylic acid 审中-公开
标题翻译：制备（甲基）丙烯醛或（甲基）丙烯酸的方法
公开(公告)号：US20050267313A1
公开(公告)日：2005-12-01
申请号：US10985015
申请日：2004-11-10
申请人： Shuhei Yada , Yasushi Ogawa , Kenji Takasaki , Yoshiro Suzuki
发明人： Shuhei Yada , Yasushi Ogawa , Kenji Takasaki , Yoshiro Suzuki
IPC分类号： C07B61/00 , C07C45/33 , C07C45/35 , C07C45/82 , C07C47/22 , C07C51/16 , C07C51/25 , C07C51/44 , C07C57/05
CPC分类号： C07C45/33 , C07C45/35 , C07C51/252 , C07C47/22 , C07C57/04
摘要： There is provided a process for producing (meth)acrolein or (meth)acrylic acid which is capable of avoiding stoppage of operation of a plant for production thereof as a whole due to failure of an oxidation reaction step in the process and ensuring a continuous stable operation of the plant, and is excellent in economical aspects. The process for producing (meth)acrolein or (meth)acrylic acid according to the present invention sequentially comprises an oxidation reaction step of subjecting a raw gas to gas-phase catalytic oxidation; a reaction gas cooling step of cooling the resultant reaction gas; a low-boiling fraction separation step of separating low-boiling components from the reaction product; a purification step of separating and removing high-boiling components from the reaction product; and a high-boiling fraction decomposition step of decomposing high-boiling components contained in a bottom liquid obtained from the purification step, said oxidation reaction step comprising a plurality of oxidation reaction steps which are disposed in parallel with each other and operated at the same time.
摘要翻译：提供了一种生产（甲基）丙烯醛或（甲基）丙烯酸的方法，其能够避免由于该方法中的氧化反应步骤失败而导致植物整体生产的停止，从而确保连续稳定工厂运行，经济性好。根据本发明的（甲基）丙烯醛或（甲基）丙烯酸的制备方法依次包括使原料气体进行气相催化氧化的氧化反应步骤; 反应气体冷却步骤，冷却所得到的反应气体; 将低沸点组分与反应产物分离的低沸点馏分分离步骤; 从反应产物中分离除去高沸点组分的纯化步骤; 以及分解由纯化工序得到的底液中含有的高沸点组分的高沸点馏分分解步骤，所述氧化反应步骤包括彼此平行并且同时操作的多个氧化反应步骤。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式