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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：EP2240437A2
公开(公告)日：2010-10-20
申请号：EP09700235.6
申请日：2009-01-09
发明人： ITO, Takanori , KINOSHITA, Masahiro
IPC分类号： C07C319/20 , C07C323/52 , C07C323/60
CPC分类号： C07C319/20 , C07C323/60 , C07C323/52
摘要： Provided is a process for producing an amide (A) : by hydrating a nitrile (B) at high conversion in relatively short period of time even without use of high-capacity cooling apparatuses (25, 35) and a large amount of inorganic acid (D). In the process for the present invention, a nitrile (B) is hydrated in continuous mode in the presence of an inorganic acid (D) so as to give a conversion of 80% to 98%, and the unreacted nitrile contained in the resultant hydrated reaction liquid (E) is hydrated in batch-wise mode so as to give a conversion of 99.9% or more, thereby producing an amide (A). For example, the inorganic acid (D) is sulfuric acid and the use amount thereof is 0.5 to 1-fold mol with respect to the nitrile (B), and the temperature in hydration is 40 to 70 -C, and hydration is performed in continuous mode using a tubular reactor (2c), loop reactor (2d) and the like. The resultant amide (A) can be hydrolyzed to produce a thiobutanoic acid (G).
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公开(公告)号：EP4364829A1
公开(公告)日：2024-05-08
申请号：EP22832743.3
申请日：2022-06-08
CPC分类号： Y02A20/131 , B01D61/58 , B01D61/12 , B01D61/02 , B01D69/02
摘要： Provided is a membrane separation method to which a reverse osmosis method can be applied as a method for separating or concentrating a to-be-treated liquid having a high osmotic pressure or as a water recovery method. The membrane separation method for a to-be-treated liquid having an osmotic pressure according to the present invention includes a first step of separating the to-be-treated liquid into a first permeate and a first retentate by a reverse osmosis method using a loose RO membrane (50). The to-be-treated liquid satisfies πCb' > ΔPmax when an osmotic pressure of a to-be-treated liquid side membrane surface concentration Cb' is represented by πCb' and a maximum operating pressure difference is represented by ΔPmax, or has an osmotic pressure of 5 MPa or more and 100 MPa or less. The loose RO membrane (50) is a membrane through which at least a part of a solute contained in the to-be-treated liquid passes together with a solvent.
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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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