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1.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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2.发明申请METHOD FOR CRYSTALLIZING (METH)ACRYLIC ACID AND METHOD FOR REGULATING CONTENT OF POLYMERIZATION INHIBITOR IN PRODUCT (METH)ACRYLIC ACID 有权用于结晶（甲基）丙烯酸的方法和用于调节产物（甲基）丙烯酸中聚合抑制剂含量的方法公开(公告)号：US20120071620A1
公开(公告)日：2012-03-22
申请号：US13322633
申请日：2010-05-27
IPC分类号： C08F120/06 , C07C51/50
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，提供了调节产品（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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3.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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4.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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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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6.发明授权Composite-oxide catalyst and process for production of acrylic acid using said catalyst 失效复合氧化物催化剂和使用所述催化剂生产丙烯酸的方法公开(公告)号：US07429678B2
公开(公告)日：2008-09-30
申请号：US10764852
申请日：2004-01-26
申请人： Michio Tanimoto , Harunori Hirao
发明人： Michio Tanimoto , Harunori Hirao
IPC分类号： C07C51/16 , C07C51/235
CPC分类号： C07C45/35 , B01J23/002 , B01J23/8885 , B01J35/0006 , B01J2523/00 , C07C51/252 , C07C47/22 , C07C57/04 , B01J2523/54 , B01J2523/68 , B01J2523/17 , B01J2523/53 , B01J2523/55 , B01J2523/69 , B01J2523/842
摘要： There are disclosed a catalyst and a process for production of acrylic acid using this catalyst, wherein, even under conditions where hot spots are formed, the catalyst is excellent in activity, selectivity, and catalyst life time and displays stable performances for a long time. The catalyst is shown by the following formula (1): MoaVbWcCudAeBfCgOx (1) (wherein: A is at least one species selected from among cobalt, nickel, iron, lead, and bismuth; B is at least one species selected from among antimony, niobium, and tin; and C is at least one species selected from among silicon, aluminum, titanium, and zirconium; and further, a, b, c, d, e, f, g, and x are atomic ratios of Mo, V, W, Cu, A, B, C, and O respectively; and, in the case of a=12, the following inequalities are satisfied: 2≦b≦15; 0
摘要翻译： 公开了使用该催化剂的催化剂和丙烯酸的制造方法，其中即使在形成热点的条件下，催化剂的活性，选择性和催化剂寿命也优异，长时间显示出稳定的性能。 催化剂由下式（1）表示：<？in-line-formula description =“In-line Formulas”end =“lead”？> Mo a >>>>> e e O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O （1）<？in-line-formula description =“In-line Formulas”end =“tail”？>（其中：A是选自钴，镍，铁，铅中的至少一种 和铋; B是选自锑，铌和锡中的至少一种; C是选自硅，铝，钛和锆中的至少一种;此外，a，b，c，d， e，f，g和x分别是Mo，V，W，Cu，A，B，C和O的原子比;并且在a = 12的情况下，满足以下不等式：2 <= b <= 15; 0
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公开(公告)号：US06825381B2
公开(公告)日：2004-11-30
申请号：US10304751
申请日：2002-11-27
申请人： Harunori Hirao
发明人： Harunori Hirao
IPC分类号： C07C5142
CPC分类号： B01D53/1487 , B01D53/1412 , C07C51/42 , C07C57/04
摘要： The object of the present invention is to provide a method to suppress changes the concentration of (meth)acrylic acid in the bottom solution discharged from the absorption column, and to enable stable operation for separating and purifying (meth)acrylic acid in the subsequent steps onward. The above-mentioned object can be achieved by way of changing the water amount contained in the gas exhausted from the top portion of the absorption column.
摘要翻译： 本发明的目的是提供一种抑制从吸收塔排出的底部溶液中的（甲基）丙烯酸浓度变化的方法，并且能够在后续步骤中分离和纯化（甲基）丙烯酸的稳定操作 上述目的可以通过改变从吸收塔的顶部排出的气体中包含的水量来实现。
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公开(公告)号：US07183428B2
公开(公告)日：2007-02-27
申请号：US10858935
申请日：2004-06-02
申请人： Kouji Ueno , Harunori Hirao , Naoki Serata , Takeshi Yokogoshiya
发明人： Kouji Ueno , Harunori Hirao , Naoki Serata , Takeshi Yokogoshiya
摘要： A method for producing acrylic acid by using an acrylic acid-containing solution of high concentration without azeotropic distillation is provided. This method of producing acrylic acid comprises introducing an acrylic acid-containing gas obtained by catalytic gas phase oxidation reaction into an absorption column and supplying the acrylic acid-containing solution to crystallization step thereby separating the solution into acrylic acid and residual mother liquid, and distilling at least part of the residual mother liquid and circulating the distillate obtained by the distillation to the absorption column.
摘要翻译： 提供了一种通过使用不经共沸蒸馏的高浓度的含丙烯酸的溶液制备丙烯酸的方法。 该制造丙烯酸的方法包括将通过催化气相氧化反应获得的含丙烯酸的气体引入吸收塔中，并将含丙烯酸的溶液供给结晶步骤，从而将溶液分离成丙烯酸和残余的母液，并蒸馏 至少部分残余母液，并将通过蒸馏获得的馏出物循环到吸收塔。
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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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公开(公告)号：US07511172B2
公开(公告)日：2009-03-31
申请号：US11880549
申请日：2007-07-23
申请人： Harunori Hirao , Kouji Ueno , Naoki Serata , Takeshi Yokogoshiya
发明人： Harunori Hirao , Kouji Ueno , Naoki Serata , Takeshi Yokogoshiya
IPC分类号： C07C51/16
CPC分类号： B01D53/1487 , C07C51/252 , C07C57/04
摘要： A method for producing acrylic acid by absorbing acrylic acid at a high ratio and obtaining an acrylic acid-containing solution of high concentration is provided. This method comprises a step of circulating part of a discharged gas from an absorption step of acrylic acid to the reactor and discarding the remainder to the out side of system while the gas is cooled before circulation to the reactor. By the method, the acrylic acid-containing solution of high concentration is obtained due to decrease of an acrylic acid loss.
摘要翻译： 提供通过以高比例吸收丙烯酸生产丙烯酸的方法，并获得高浓度的含丙烯酸的溶液。 该方法包括将排出的气体的一部分从丙烯酸的吸收步骤循环到反应器中并将余量排出到系统外侧的步骤，同时在循环到反应器之前冷却气体。 通过该方法，由于丙烯酸损失的降低，得到高浓度的含丙烯酸的溶液。
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