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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：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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公开(公告)号：US07326810B2
公开(公告)日：2008-02-05
申请号：US09919024
申请日：2001-07-31
CPC分类号： C07B41/00 , C07C51/252 , C07C57/04
摘要： In the reaction of catalytic gas phase oxidation induced by the supply of at least a raw material to be oxidized and a molecular oxygen-containing gas to a reactor for catalytic gas phase oxidation, a method for starting up the reactor for catalytic gas phase oxidation is disclosed which is characterized by causing the raw material and the molecular oxygen-containing gas to pass a range in which the concentration of the raw material is less than the lower explosion limit of the raw material and the concentration of oxygen is not less than the limiting oxygen concentration, but excluding the concentration of the raw material of 0 vol. %. The method enables the reactor to be started up economically and safely by avoiding the explosion range induced by the composition of a raw material and a molecular oxygen-containing gas supplied to the reactor and decreasing the amount of a diluting gas to be supplied.
摘要翻译： 在将至少要被氧化的原料供给的催化气相氧化和含有分子氧的气体引入用于催化气相氧化的反应器的反应中，用于启动催化气相氧化反应器的方法是 其特征在于，使原料和含分子氧气体通过原料浓度小于原料的下限爆炸极限的范围，氧浓度不低于限定值 氧浓度，但不包括原料浓度为0体积。 ％。 该方法能够通过避免由供给到反应器的原料和含分子氧气体的组成引起的爆炸范围，减少供给的稀释气体的量，从而经济，安全地启动反应器。
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公开(公告)号：US07102030B2
公开(公告)日：2006-09-05
申请号：US10796254
申请日：2004-03-09
IPC分类号： C07C51/16
CPC分类号： B01J19/002 , B01J8/0453 , B01J8/0492 , B01J23/8885 , B01J2208/00132 , B01J2219/00006 , B01J2219/00164 , B01J2219/00198 , B01J2219/002 , B01J2219/00216 , B01J2219/0022 , B01J2219/00225 , B01J2219/00268 , C07C51/252 , C07C57/04
摘要： A method for managing the operation of an apparatus for the reaction of gas phase partial oxidation of an unsaturated hydrocarbon with a molecular oxygen-containing gas for the purpose of omitting wasteful emergency stop of the operation and ensuring execution of necessary emergency measure and a method for producing (meth) acrylic acid by utilizing the method mentioned above are provided. The operation of the apparatus is brought to emergency stop exclusively when thee values of concentrations of various gases obtained by calculation from the flow rates of the gases being introduced at the inlet port of the reactor and the measured values obtained by analysis with gas analyzing instruments both deviate from the ranges of the present values.
摘要翻译： 用于管理不饱和烃与分子氧气体的气相部分氧化反应装置的操作的方法，以省略浪费的紧急停止操作并确保执行必要的应急措施和方法 提供了通过利用上述方法生产（甲基）丙烯酸的方法。 仅当通过计算得到的各种气体的浓度从在反应器的入口处引入的气体的流量和通过气体分析仪器的分析得到的测量值的值达到紧急停止时，设备的操作才被紧急停止 偏离当前值的范围。
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5.发明授权公开(公告)号：US06713648B2
公开(公告)日：2004-03-30
申请号：US09780787
申请日：2001-02-09
IPC分类号： C07C5142
摘要： This invention concerns a method for absorbing acrylic acid, characterized by supplying an acrylic acid-containing reaction gas component obtained by the reaction of catalytic gas phase oxidation to an acrylic acid absorption column and advancing a high boiling inert hydrophobic organic liquid into counter-flow contact with said reaction gas in said acrylic acid absorption column with the mass flow rate of the organic liquid fixed in the range of 0.2-4.5 times the mass flow rate of the acrylic acid in the reaction gas thereby absorbing acrylic acid in said organic liquid and obtaining an acrylic acid-containing solution and a method for purifying acrylic acid, comprising a step for purifying the acrylic acid-containing organic liquid obtained by the step mentioned above. By this invention, a product of acrylic acid containing a low boiling substance at a low concentration can be produced.
摘要翻译： 本发明涉及一种吸收丙烯酸的方法，其特征在于将通过催化气相氧化反应获得的含丙烯酸的反应气体组分供给丙烯酸吸收塔，并将高沸点惰性疏水性有机液体推入逆流接触 所述丙烯酸吸收塔中的所述反应气体的有机液体的质量流量固定在反应气体中丙烯酸的质量流量的0.2-4.5倍的范围内，从而吸收所述有机液体中的丙烯酸，并获得 含丙烯酸的溶液和丙烯酸的精制方法，其特征在于，含有通过上述工序得到的含丙烯酸的有机液的纯化工序。 通过本发明，可以制备含有低浓度低沸点物质的丙烯酸的产物。
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公开(公告)号：US07332624B2
公开(公告)日：2008-02-19
申请号：US10607767
申请日：2003-06-27
CPC分类号： C07C51/252 , C07C51/347 , C07C57/04
摘要： A method for the production of acrylic acid comprises (i) a step for introducing a polymerization inhibitor to a stage other than a stage for supplying a raw material and a stage for supplying a reflux of said distilling column or (ii) a step for supplying the acrylic acid recovered by thermally decomposing said oligomer to said stage for dehydration. Thus, the present invention enjoys effective utilization of acrylic acid and exalts the efficiency of production.
摘要翻译： 制备丙烯酸的方法包括（i）将聚合抑制剂引入到用于供应原料的阶段以外的阶段和用于提供所述蒸馏塔的回流的阶段的步骤，或（ii）供应步骤 通过将所述低聚物热分解为所述脱水阶段而回收的丙烯酸。 因此，本发明可有效利用丙烯酸，提高生产效率。
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公开(公告)号：US07109372B2
公开(公告)日：2006-09-19
申请号：US10633170
申请日：2003-08-01
IPC分类号： C07C51/16
CPC分类号： C07C51/252 , C07C57/04
摘要： A method is disclosed which produces acrylic acid in a high yield as maintaining the conditions for purifying acrylic acid in constant ranges and preventing the acrylic acid from polymerization. By using single a single reactor, propylene concentration adjusting in the range of 7–15 vol. % and water concentration adjusting in the range of 0–10 vol. % are introduced thereinto thereby obtaining an acrylic acid-containing gas. Then the gas is introduced to an acrylic acid absorption column to adjust water concentration in the range of 1–45 wt. %, thereby preventing from polymerization.
摘要翻译： 公开了一种以高产率生产丙烯酸的方法，其保持将丙烯酸纯化到一定范围内并防止丙烯酸聚合的条件。 通过使用单个单个反应器，丙烯浓度调节在7-15vol。 ％和水浓度调节在0-10 vol。 引入％，从而得到含丙烯酸的气体。 然后将气体引入丙烯酸吸收塔以调节1-45重量％的水浓度。 ％，由此防止聚合。
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8.发明授权Method for disposal of waste from acrylic acid process and acrylic ester process 有权从丙烯酸工艺和丙烯酸酯工艺处理废物的方法公开(公告)号：US07205429B2
公开(公告)日：2007-04-17
申请号：US10664237
申请日：2003-09-17
CPC分类号： C02F1/727 , B01D53/75 , C02F1/04 , C02F1/20 , C02F11/08 , C02F2103/18 , C07C67/08 , C07C69/54
摘要： This invention is providing a method for efficient treatment of the waste material from a process for production of acrylic acid and an acrylic ester. This is a method for the disposal of waste material, which at least one waste material selected from the group consisting of waste oil, waste water, and waste gas emitted from a process for production of acrylic acid is/are purified with at least one waste material selected from the group consisting of waste oil, waste water, and waste gas emitted from a process for production of an acrylic ester jointly. The efficiency of the treatment is enhanced by simultaneously treating the waste material.
摘要翻译： 本发明提供了一种从丙烯酸和丙烯酸酯的生产方法对废料进行有效处理的方法。 这是一种用于处理废物的方法，其中至少一种从由废油，废水和从生产丙烯酸的方法排出的废气中的废气中选出的废料被至少一种废物净化 从由废丙烯酸酯的制造方法排出的废油，废水和废气组成的组中选择的材料。 通过同时处理废料来提高处理效率。
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9.发明授权公开(公告)号：US06888025B2
公开(公告)日：2005-05-03
申请号：US10211040
申请日：2002-08-02
摘要： This invention concerns a method for absorbing acrylic acid, characterized by supplying an acrylic acid-containing reaction gas component obtained by the reaction of catalytic gas phase oxidation to an acrylic acid absorption column and advancing a high boiling inert hydrophobic organic liquid into counter-flow contact with said reaction gas in said acrylic acid absorption column with the mass flow rate of the organic liquid fixed in the range of 0.2-7.0 times the mass flow rate of the acrylic acid in the reaction gas thereby absorbing acrylic acid in said organic liquid and obtaining an acrylic acid-containing solution including a low boiling substance in the range of 0.7-7.5 wt % based on the weight of bottom liquid of absorption column.
摘要翻译： 本发明涉及一种吸收丙烯酸的方法，其特征在于将通过催化气相氧化反应获得的含丙烯酸的反应气体组分供给丙烯酸吸收塔，并将高沸点惰性疏水性有机液体推入逆流接触 所述丙烯酸吸收塔中的所述反应气体的有机液体的质量流量固定在反应气体中丙烯酸的质量流量的0.2-7.0倍的范围内，从而吸收所述有机液体中的丙烯酸，并获得 含有丙烯酸的溶液，其包含基于吸收塔底液重量的0.7-7.5重量％的低沸点物质。
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10.发明授权Method for crystallizing (meth)acrylic acid and method for regulating content of polymerization inhibitor in product (meth)acrylic acid 有权（甲基）丙烯酸结晶方法及其制备（甲基）丙烯酸中阻聚剂含量的方法公开(公告)号：US08704000B2
公开(公告)日：2014-04-22
申请号：US13322633
申请日：2010-05-27
摘要： PROBLEMThere is provided a melting method of (meth)acrylic acid crystal which is capable of providing a higher quality of (meth)acrylic acid without carrying out an additional purification treatment to (meth)acrylic acid obtained by a crystallization operation accompanied by melting of (meth)acrylic acid. In addition, there is provided a simple method for adjusting a content of polymerization inhibitor in a product (meth)acrylic acid.SOLUTIONIn the crystallization method melting (meth)acrylic acid crystal while wetting with the crystalline molten liquid, a polymerization inhibitor is added to a molten liquid melted after initiation of melting, and all of crystal is melted while circulating and feeding the molten liquid containing said polymerization inhibitor to the crystal. In addition, a content of polymerization inhibitor in product (meth)acrylic acid is adjusted by adding a predetermined amount of polymerization inhibitor corresponding to a product specification to the molten liquid melted after initiation of melting.
摘要翻译： 问题提供了（甲基）丙烯酸晶体的熔融方法，其能够提供更高质量的（甲基）丙烯酸，而不对通过伴随熔化的结晶操作获得的（甲基）丙烯酸进行额外的纯化处理 （甲基）丙烯酸。 此外，提供了调节产物（甲基）丙烯酸中阻聚剂含量的简单方法。 解决方案在熔融（甲基）丙烯酸晶体的结晶方法中，与结晶熔融液体一起润湿的同时，在熔融开始后熔化的熔融液中加入聚合抑制剂，并且在循环并将含有 阻聚剂结晶。 此外，通过向熔融开始熔融的熔融液中加入与产品规格相对应的规定量的聚合抑制剂来调节产品（甲基）丙烯酸中的聚合抑制剂的含量。
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