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公开(公告)号：EP1961699A1
公开(公告)日：2008-08-27
申请号：EP06834542.0
申请日：2006-12-06
发明人： MORI, Yasuhiko , OMOTO, Norihito
摘要： Disclosed is a process for producing chlorine by oxidation of hydrogen chloride through a catalytic gas-phase reaction in the presence of a catalyst, wherein hydrogen chloride as a raw material is a by-product of synthesis of isocyanate by reacting phosgene and primary amine and oxidizing the hydrogen chloride through a catalytic gas phase reaction in the presence of a catalyst. The process is characterized by adjusting the sulfur content in carbon monoxide which is a raw material for the phosgene to 2000 vol. ppb or less.
摘要翻译： 本发明公开了一种在催化剂存在下通过催化气相反应氧化氯化氢生产氯气的方法，其中氯化氢作为原料是通过光气和伯胺反应合成异氰酸酯和氧化的副产物 通过催化气相反应在催化剂存在下氯化氢。 该方法的特征在于将作为光气原料的一氧化碳中的硫含量调节至2000体积％。 ppb或更少。
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公开(公告)号：EP3617187A1
公开(公告)日：2020-03-04
申请号：EP18791984.0
申请日：2018-04-27
发明人： OMOTO, Norihito , SATOH, Yoshitaka , MORIKAWA, Masayuki , KOIZUMI, Yoshiyuki , YAMASHIRO, Naoya , KATAGAMI, Ryousuke
IPC分类号： C07C319/20 , C07C319/28 , C07C323/58
摘要： The present invention provides a method for producing methionine characterized by comprising a step of hydrolyzing 5-[2-(methylthio)ethyl]imidazolidine-2,4-dione in the presence of an alkali compound to obtain a reaction solution containing an alkali salt of methionine, a step of precipitating methionine by introducing carbon dioxide into the reaction solution to obtain a first slurry containing the methionine, a step of allowing the first slurry to flow into a pressurized filter and obtaining the solid methionine and mother liquor from the first slurry, and a step of recovering carbon dioxide from the mother liquor. By the present production method, the carbon dioxide introduced in the crystallization step is suppressed from being released from the mother liquor, and the carbon dioxide can be recovered.
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公开(公告)号：EP1961699B1
公开(公告)日：2015-03-04
申请号：EP06834542.0
申请日：2006-12-06
发明人： MORI, Yasuhiko , OMOTO, Norihito
摘要： Disclosed is a process for producing chlorine by oxidation of hydrogen chloride through a catalytic gas-phase reaction in the presence of a catalyst, wherein hydrogen chloride as a raw material is a by-product of synthesis of isocyanate by reacting phosgene and primary amine and oxidizing the hydrogen chloride through a catalytic gas phase reaction in the presence of a catalyst. The process is characterized by adjusting the sulfur content in carbon monoxide which is a raw material for the phosgene to 2000 vol. ppb or less.
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公开(公告)号：EP2501665A1
公开(公告)日：2012-09-26
申请号：EP10831292.7
申请日：2010-10-20
IPC分类号： C07C17/10 , C07C21/067 , C07C29/66 , C07C31/36
CPC分类号： C07C17/38 , C01B7/04 , C01B7/0706 , C07C17/10 , C07C29/66 , C07C21/067 , C07C31/36
摘要： A method for producing allyl chloride is provided which includes: a chlorination step of reacting propylene with chlorine to obtain a reaction product containing allyl chloride, unreacted propylene and by-product hydrogen chloride; a separation step of cooling the reaction product to separate the reaction product into the allyl chloride and a mixed gas containing the unreacted propylene and the by-product hydrogen chloride; a collection step of separating the mixed gas into the unreacted propylene and the by-product hydrogen chloride to collect the unreacted propylene; and an oxidation step of oxidizing the separated by-product hydrogen chloride to obtain chlorine. At least part of the chlorine used in the chlorination step is the chlorine obtained in the oxidation step. A method for producing dichlorohydrin using the chlorine obtained in the oxidation step is also provided.
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公开(公告)号：EP2374752A1
公开(公告)日：2011-10-12
申请号：EP09831855.3
申请日：2009-12-03
IPC分类号： C01B7/04
CPC分类号： C01B7/04 , C01B7/0743
摘要： An object of the present invention is to provide a novel method for producing chlorine with improved efficiency, which can remove impurities other than hydrogen chloride contained in a raw material gas and can recover unreacted hydrogen chloride after an oxidation reaction efficiently. The method of the present invention for producing chlorine includes an oxidation step of oxidizing hydrogen chloride in a raw material gas containing hydrogen chloride and impurities with oxygen, thereby obtaining a gas containing chlorine, and an absorption step of bringing the gas containing chlorine obtained in the oxidation step into contact with water or aqueous hydrochloric acid to form a solution containing hydrogen chloride and water as main components, thereby recovering unreacted hydrogen chloride and simultaneously obtaining a gas containing chlorine and oxygen as main components, wherein the above-mentioned raw material gas contains a gas obtained in at least one step of a first stripping step and a second stripping step, and the above-mentioned raw material gas passes through a step of removing moisture and a step of performing compression after at least one step of the first stripping step and the second stripping step and before being subjected to the oxidation step.
摘要翻译： 本发明的目的在于提供一种能够除去原料气体中所含的氯化氢以外的杂质，并且能够有效地回收氧化反应后的未反应的氯化氢的效率提高的氯的新的制造方法。 本发明的氯的制造方法包括：将含有氯化氢和杂质的原料气体中的氯化氢用氧气氧化而得到含氯气体的氧化工序;以及将含有氯的气体 氧化步骤与水或盐酸水溶液接触以形成含有氯化氢和水作为主要组分的溶液，由此回收未反应的氯化氢并同时获得含有氯和氧作为主要组分的气体，其中上述原料气体含有 在第一汽提步骤和第二汽提步骤中的至少一个步骤中获得的气体以及上述原料气体经过除去水分的步骤和在第一汽提步骤中的至少一个步骤之后进行压缩的步骤 和第二剥离步骤并且在经受氧化步骤之前。
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公开(公告)号：EP2377812A1
公开(公告)日：2011-10-19
申请号：EP09834692.7
申请日：2009-12-03
IPC分类号： C01B7/04
CPC分类号： C01B7/04 , C01B7/07 , C01B7/0712 , C01B7/0743 , Y02P20/22
摘要： An object of the present invention is to provide a novel method for producing chlorine, by which it is possible to remove impurities contained with hydrogen chloride in a raw material gas and further to recover unreacted hydrogen chloride after an oxidation reaction efficiently in a method for producing chlorine by oxidizing hydrogen chloride. The method of the present invention for producing chlorine includes [1] an oxidation step of oxidizing hydrogen chloride in a raw material gas containing the hydrogen chloride and impurities with a gas containing oxygen, thereby obtaining a gas containing chlorine, water, unreacted hydrogen chloride, and unreacted oxygen; [2] an absorption step of bringing the gas containing chlorine, water, unreacted hydrogen chloride, and unreacted oxygen obtained in the oxidation step into contact with an absorbent liquid including water or aqueous hydrochloric acid or cooling the gas, thereby recovering unreacted hydrogen chloride in the form of a solution containing hydrogen chloride and water as main components and simultaneously obtaining a gas containing chlorine and unreacted oxygen as main components; and [3] a stripping step of distilling the solution obtained in the absorption step, thereby obtaining a gas containing hydrogen chloride as a main component, wherein the gas obtained in the stripping step, which contains hydrogen chloride as a main component and contains 5 to 50% by volume of water, is recovered and mixed with the raw material gas.
摘要翻译： 本发明的目的是提供一种生产氯的新方法，通过该方法可以除去原料气体中的氯化氢所含的杂质，并且在生产方法中有效地进行氧化反应后的未反应的氯化氢回收 通过氯化氢氧化氯。 本发明的氯的制造方法包括：[1]在含有氯的气体中含有氯化氢和杂质的原料气体中的氯化氢的氧化工序，得到含有氯，水，未反应的氯化氢的气体， 和未反应的氧气; [2]将在氧化步骤中得到的含有氯，水，未反应的氯化氢和未反应的氧的气体与包含水或盐酸水溶液的吸收剂液体接触或冷却气体的吸收步骤，从而将未反应的氯化氢 以氯化氢和水为主要成分的溶液的形式，同时获得含有氯和未反应的氧作为主要成分的气体; 和[3]蒸馏步骤，蒸馏在吸收步骤中获得的溶液，从而获得含有氯化氢作为主要成分的气体，其中在汽提步骤中获得的气体含有氯化氢作为主要成分并含有5〜 将50体积％的水回收并与原料气体混合。
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公开(公告)号：EP2368842A1
公开(公告)日：2011-09-28
申请号：EP09830319.1
申请日：2009-11-24
CPC分类号： C01B7/0712 , B01D3/14 , B01D3/36
摘要： Provided is a method of purifying hydrochloric acid by removing an organic substance having a boiling point of - 25 °C to 120 °C under atmospheric pressure from an organic substance-containing hydrochloric acid that contains the organic substance and has a hydrogen chloride concentration higher than an azeotropic hydrogen chloride concentration under atmospheric pressure. The method includes the step of subjecting the organic substance-containing hydrochloric acid to distillation using a distillation tower at an operation pressure set such that an azeotropic hydrogen chloride concentration under the operation pressure is higher than the hydrogen chloride concentration of the organic substance-containing hydrochloric acid, to distill out the organic substance from the top of the distillation tower.
摘要翻译： 本发明提供一种在含有有机物的含有有机物的盐酸中，在常压下除去沸点为-25℃〜120℃的有机物，且氯化氢浓度高于 大气压下的共沸氯化氢浓度。 该方法包括以下操作压力对含有有机物质的盐酸进行蒸馏：使用蒸馏塔在操作压力下进行蒸馏，所述操作压力设定为使得操作压力下的共沸氯化氢浓度高于含有机物质的盐酸的氯化氢浓度 酸，从蒸馏塔顶部蒸馏出有机物质。
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公开(公告)号：EP2366661A1
公开(公告)日：2011-09-21
申请号：EP09823656.5
申请日：2009-10-29
发明人： SEKI, Kohei , OMOTO, Norihito
IPC分类号： C01B7/04
CPC分类号： C01B7/0718 , B01J20/08 , B01J20/28061 , B01J21/063 , B01J21/08 , B01J23/462 , C01B7/04 , Y02P20/228
摘要： Disclosed is a process for producing chlorine, which makes it possible to successfully continue an oxidation reaction, even if sulfur component-containing hydrogen chloride is used. This process comprises a step of feeding sulfur component-containing hydrogen chloride and oxygen into a reaction tube 1 comprising a catalyst packed bed 10, to thereby oxidize the hydrogen chloride to produce chlorine, wherein the catalyst packed bed 10 includes an alumina-mixed catalyst packed bed 20 formed of a mixture of a catalyst 3 with alumina (or a diluent 4), and wherein the BET specific surface area of the alumina is from 10 to 500 m 2 /g. Preferably, the alumina is γ-alumina and/or θ-alumina.
摘要翻译： 本发明公开了即使使用含有硫成分的氯化氢，也能够成功地继续氧化反应的氯的制造方法。 该方法包括将含硫组分的氯化氢和氧供给到包含催化剂填充床10的反应管1中，从而氧化氯化氢以产生氯的步骤，其中催化剂填充床10包括氧化铝混合的催化剂 床20由催化剂3与氧化铝（或稀释剂4）的混合物形成，并且其中氧化铝的BET比表面积为10-500m 2 / g。 优选地，氧化铝是γ-氧化铝和/或θ-氧化铝。
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公开(公告)号：EP3617189A1
公开(公告)日：2020-03-04
申请号：EP18790756.3
申请日：2018-04-27
发明人： SATOH, Yoshitaka , OMOTO, Norihito , KOIZUMI, Yoshiyuki , YAMASHIRO, Naoya , KATAGAMI, Ryousuke
IPC分类号： C07C319/28 , C07C319/20 , C07C323/58
摘要： The present provides a method for producing methionine which is characterized by a crystallization step in which carbon dioxide is introduced into a reaction solution containing an alkali salt of methionine which is obtained by hydrolyzing 5-[2-(methylthio)ethyl] imidazoline-2,4-dione in the presence of an alkali compound, thereby precipitating the methionine, and further comprises a step of adding waste methionine to the reaction solution. The method of production of the present invention can improve a yield in the production of methionine.
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公开(公告)号：EP3617188A1
公开(公告)日：2020-03-04
申请号：EP18792235.6
申请日：2018-04-27
发明人： OMOTO, Norihito , SATOH, Yoshitaka , MORIKAWA, Masayuki , KOIZUMI, Yoshiyuki , YAMASHIRO, Naoya , KATAGAMI, Ryousuke
IPC分类号： C07C319/20 , C07C319/28 , C07C323/58 , B04B1/20
摘要： The present invention provides a method for producing methionine which is characterized by comprising (1) a reaction step: a step of hydrolyzing 5-[2-(methylthio)ethyl]imidazolidine-2,4-dione in the presence of an alkali compound to obtain a reaction solution containing an alkali salt of methionine, (2) a first crystallizing step: a step of introducing carbon dioxide into the reaction solution and precipitating methionine from the reaction solution to obtain the first crystal of methionine and the first crystal mother liquor, and (3) a second crystallizing step: a step in which after obtaining a slurry which contains precipitates containing the second crystals of methionine precipitated by introducing carbon dioxide to the first crystal mother liquor and the slurry was subjected to centrifugation to separate the second crystal of methionine and the second crystal mother liquor by a solid-liquid separation, and the precipitate remained in the obtained second crystal mother liquor is separated using a filter.
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