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公开(公告)号：US09073843B2
公开(公告)日：2015-07-07
申请号：US13994275
申请日：2011-12-01
CPC分类号： C07C51/12 , B01J23/464 , B01J27/13 , C07C51/44 , C07C53/08
摘要： A process for producing acetic acid by: a reaction step for continuously allowing methanol to react with carbon monoxide in the presence of a catalyst system comprising a metal catalyst, an ionic iodide, and methyl iodide in a carbonylation reactor, a flash distillation step for continuously feeding a flasher with a reaction mixture from the reactor and evaporating a volatile component at least containing product acetic acid, methyl acetate, and methyl iodide by flash distillation to separate the volatile component and a liquid catalyst mixture at least containing the metal catalyst and the ionic iodide, and an acetic acid collection step for separating a stream containing acetic acid from the volatile component to collect acetic acid; wherein, in the flash distillation step, the flash distillation is conducted under the condition that the concentration of methyl acetate in the liquid catalyst mixture is not less than 0.6% by weight.
摘要翻译： 一种生产乙酸的方法，该方法是：在羰基化反应器中，在包含金属催化剂，离子碘化物和甲基碘的催化剂体系的存在下，连续使甲醇与一氧化碳反应的反应步骤，连续的闪蒸步骤 用来自反应器的反应混合物进料闪蒸器并通过闪蒸蒸发至少含有产物乙酸，乙酸甲酯和甲基碘的挥发性组分，以分离挥发性组分和至少含有金属催化剂和离子的液体催化剂混合物 碘化物和乙酸收集步骤，用于从含挥发性成分中分离含有乙酸的物流以收集乙酸; 其中，在闪蒸步骤中，在液体催化剂混合物中乙酸甲酯的浓度不小于0.6重量％的条件下进行闪蒸。
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公开(公告)号：US20130261334A1
公开(公告)日：2013-10-03
申请号：US13994275
申请日：2011-12-01
IPC分类号： C07C51/12
CPC分类号： C07C51/12 , B01J23/464 , B01J27/13 , C07C51/44 , C07C53/08
摘要： A process for producing acetic acid by: a reaction step for continuously allowing methanol to react with carbon monoxide in the presence of a catalyst system comprising a metal catalyst, an ionic iodide, and methyl iodide in a carbonylation reactor, a flash distillation step for continuously feeding a flasher with a reaction mixture from the reactor and evaporating a volatile component at least containing product acetic acid, methyl acetate, and methyl iodide by flash distillation to separate the volatile component and a liquid catalyst mixture at least containing the metal catalyst and the ionic iodide, and an acetic acid collection step for separating a stream containing acetic acid from the volatile component to collect acetic acid; wherein, in the flash distillation step, the flash distillation is conducted under the condition that the concentration of methyl acetate in the liquid catalyst mixture is not less than 0.6% by weight.
摘要翻译： 一种生产乙酸的方法，该方法是：在羰基化反应器中，在包含金属催化剂，离子碘化物和甲基碘的催化剂体系的存在下，连续使甲醇与一氧化碳反应的反应步骤，连续的闪蒸步骤 用来自反应器的反应混合物进料闪蒸器并通过闪蒸蒸发至少含有产物乙酸，乙酸甲酯和甲基碘的挥发性组分，以分离挥发性组分和至少含有金属催化剂和离子的液体催化剂混合物 碘化物和乙酸收集步骤，用于从含挥发性成分中分离含有乙酸的物流以收集乙酸; 其中，在闪蒸步骤中，在液体催化剂混合物中乙酸甲酯的浓度不小于0.6重量％的条件下进行闪蒸。
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公开(公告)号：US20130264186A1
公开(公告)日：2013-10-10
申请号：US13993109
申请日：2011-12-01
申请人： Masahiko Shimizu , Ryuji Saito , Hiroyuki Miura , Takashi Ueno
发明人： Masahiko Shimizu , Ryuji Saito , Hiroyuki Miura , Takashi Ueno
IPC分类号： C07C51/44
摘要： Acetic acid is produced while efficiently inhibiting condensation of hydrogen iodide in a distillation column (second distillation column) for purifying crude acetic acid by further distillation.A process for producing acetic acid comprises an acetic acid collection step for feeding a first distillation column with a volatile component at least containing acetic acid, methyl acetate, methyl iodide, water, and hydrogen iodide, separating a first lower boiling point component as an overhead, and collecting a first liquid stream mainly containing acetic acid, and an acetic acid purification step for feeding a second distillation column with the first liquid stream, further separating a second lower boiling point component as an overhead, and collecting a second liquid stream containing acetic acid, wherein an alkali component is added or mixed to the first liquid stream in the manners (1) and/or (2) for distilling a liquid object to be treated containing the first liquid stream and the alkali component in the second column: (1) the alkali component is added to or mixed with the first liquid stream before the first liquid stream is fed to the second column, (2) in the second column, the alkali component is added or mixed at the same height level as or at a height level upper than a height level at which the first liquid stream is fed.
摘要翻译： 产生乙酸，同时有效地抑制通过进一步蒸馏纯化粗乙酸的蒸馏塔（第二蒸馏塔）中碘化氢的冷凝。 一种生产乙酸的方法包括乙酸收集步骤，用于向至少含有乙酸，乙酸甲酯，甲基碘，水和碘化氢的挥发性成分进料第一蒸馏塔，分离作为塔顶馏分的第一低沸点组分 并收集主要含有乙酸的第一液体物流，以及用于向第二蒸馏塔供给第一液体物流的乙酸净化步骤，进一步分离作为塔顶馏出物的第二低沸点成分，并收集含有乙酸的第二液体物流 酸，其中以第（1）和/或（2）的方式将碱组分加入或混合到第一液体流中，用于蒸馏含有第二液体流和第二塔中的碱组分的待处理液体物质： 1）在将第一液体流送入第二塔之前，将碱成分加入或混合第一液体流，（2）在第二柱中 n，碱成分以与供给第一液体流的高度水平高度相同的高度水平添加或混合。
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公开(公告)号：US09776944B2
公开(公告)日：2017-10-03
申请号：US13993109
申请日：2011-12-01
申请人： Masahiko Shimizu , Ryuji Saito , Hiroyuki Miura , Takashi Ueno
发明人： Masahiko Shimizu , Ryuji Saito , Hiroyuki Miura , Takashi Ueno
摘要： A process for producing acetic acid including an acetic acid collection step for feeding a first distillation column with a volatile component at least containing acetic acid, methyl acetate, methyl iodide, water, and hydrogen iodide. Separating a first lower boiling point component as an overhead, and collecting a first liquid stream containing acetic acid. An acetic acid purification step for feeding a second distillation column with the first liquid stream, and separating a second lower boiling point component as an overhead. Collecting a second liquid stream containing acetic acid. An alkali component is added or mixed for distilling a mixture to be treated containing the first liquid stream and the alkali component in the second distillation column. In the mixture, at least one component (A) having a boiling point lower than acetic acid. The at least one component (A) having a concentration of 0.1 to 15% by weight.
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公开(公告)号：US09115071B2
公开(公告)日：2015-08-25
申请号：US13994373
申请日：2011-12-01
申请人： Masahiko Shimizu , Ryuji Saito , Hiroyuki Miura
发明人： Masahiko Shimizu , Ryuji Saito , Hiroyuki Miura
IPC分类号： C07C51/12
摘要： Acetic acid is produced while inhibiting an increased concentration or production of hydrogen iodide in a carbonylation reactor or corrosion of the carbonylation reactor.A production process of acetic acid comprises a reaction step for continuously allowing methanol to react with carbon monoxide in the presence of a catalyst system comprising a metal catalyst (e.g., a rhodium catalyst), an ionic iodide (e.g., lithium iodide), and methyl iodide in a carbonylation reactor; and in the process, (i) the concentration of the metal catalyst is maintained at not less than 860 ppm on the basis of weight, the concentration of water is maintained at 0.8 to 15% by weight, the concentration of methyl iodide is maintained at not more than 13.9% by weight, and the concentration of methyl acetate is maintained at not less than 0.1% by weight, in a whole liquid phase in the reactor, and/or (ii) the concentration of the metal catalyst is maintained at not less than 660 ppm on the basis of weight, the concentration of water is maintained at 0.8 to 3.9% by weight, the concentration of the ionic iodide is maintained at not more than 13% by weight, the concentration of methyl iodide is maintained at not more than 13.9% by weight, and the concentration of methyl acetate is maintained at not less than 0.1% by weight, in a whole liquid phase in the reactor.
摘要翻译： 产生乙酸，同时抑制羰基化反应器中碘化氢的浓度增加或羰基化反应器的腐蚀。 乙酸的生产方法包括在包含金属催化剂（例如，铑催化剂），离子碘化物（例如碘化锂）和甲基的催化剂体系存在下，连续使甲醇与一氧化碳反应的反应步骤 碘化物在羰基化反应器中; 在该过程中，（i）金属催化剂的浓度基于重量维持在不低于860ppm，水的浓度保持在0.8至15重量％，甲基碘的浓度保持在 不超过13.9重量％，乙酸甲酯的浓度在反应器的整个液相中保持在不小于0.1重量％，和/或（ii）金属催化剂的浓度保持不变 基于重量小于660ppm，水的浓度保持在0.8〜3.9重量％，离子碘的浓度保持在不超过13重量％，甲基碘的浓度保持不变 大于13.9重量％，并且在反应器中的整个液相中，乙酸甲酯的浓度保持在不小于0.1重量％。
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公开(公告)号：US09162958B2
公开(公告)日：2015-10-20
申请号：US13995102
申请日：2011-12-01
申请人： Masahiko Shimizu , Ryuji Saito , Hiroyuki Miura
发明人： Masahiko Shimizu , Ryuji Saito , Hiroyuki Miura
摘要： Acetic acid is produced while inhibiting increased concentrations of hydrogen iodide and acetic acid in an acetaldehyde distillation column.A production process of acetic acid comprises a step for allowing methanol to react with carbon monoxide; a step for feeding a flasher with the reaction mixture to separate a volatile component (2A) and a low-volatile component (2B); a step for feeding a distillation column with the volatile component (2A), and separating an overhead (3A) containing methyl iodide, acetic acid, methyl acetate, water, acetaldehyde, and hydrogen iodide, and a stream (3B) containing acetic acid to collect acetic acid; and a separation step for feeding an acetaldehyde distillation column with at least part of the overhead (3A) and separating a liquid object to be treated containing the overhead (3A) into a lower boiling point component (4A) containing acetaldehyde and a higher boiling point component (4B); wherein, in the separation step, the liquid object contains methanol and/or dimethyl ether in a concentration of 0.1 to 50% by weight is subjected to distillation.
摘要翻译： 产生乙酸，同时抑制乙醛蒸馏塔中碘化氢和乙酸的浓度增加。 乙酸的生产方法包括使甲醇与一氧化碳反应的步骤; 用反应混合物进料闪蒸器以分离挥发性组分（2A）和低挥发性组分（2B）的步骤; 将蒸馏塔与挥发性成分（2A）进料的工序，将含有甲基碘，乙酸，乙酸甲酯，水，乙醛，碘化氢的塔顶馏出物（3A）和含有乙酸的物流（3B）分离成 收集乙酸; 以及分离步骤，用于向塔顶（3A）的至少一部分进料乙醛蒸馏塔并将含有塔顶馏出物（3A）的待处理液体分离成含有乙醛和较高沸点的低沸点组分（4A） 组分（4B）; 其中，在分离步骤中，液体物质含有浓度为0.1至50重量％的甲醇和/或二甲醚进行蒸馏。
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公开(公告)号：US20130281735A1
公开(公告)日：2013-10-24
申请号：US13995102
申请日：2011-12-01
申请人： Masahiko Shimizu , Ryuji Saito , Hiroyuki Miura
发明人： Masahiko Shimizu , Ryuji Saito , Hiroyuki Miura
IPC分类号： C07C51/12
摘要： Acetic acid is produced while inhibiting increased concentrations of hydrogen iodide and acetic acid in an acetaldehyde distillation column.A production process of acetic acid comprises a step for allowing methanol to react with carbon monoxide; a step for feeding a flasher with the reaction mixture to separate a volatile component (2A) and a low-volatile component (2B); a step for feeding a distillation column with the volatile component (2A), and separating an overhead (3A) containing methyl iodide, acetic acid, methyl acetate, water, acetaldehyde, and hydrogen iodide, and a stream (3B) containing acetic acid to collect acetic acid; and a separation step for feeding an acetaldehyde distillation column with at least part of the overhead (3A) and separating a liquid object to be treated containing the overhead (3A) into a lower boiling point component (4A) containing acetaldehyde and a higher boiling point component (4B); wherein, in the separation step, the liquid object contains methanol and/or dimethyl ether in a concentration of 0.1 to 50% by weight is subjected to distillation.
摘要翻译： 产生乙酸，同时抑制乙醛蒸馏塔中碘化氢和乙酸的浓度增加。 乙酸的生产方法包括使甲醇与一氧化碳反应的步骤; 用反应混合物进料闪蒸器以分离挥发性组分（2A）和低挥发性组分（2B）的步骤; 将蒸馏塔与挥发性成分（2A）进料的工序，将含有甲基碘，乙酸，乙酸甲酯，水，乙醛，碘化氢的塔顶馏出物（3A）和含有乙酸的物流（3B）分离成 收集乙酸; 以及分离步骤，用于向塔顶（3A）的至少一部分进料乙醛蒸馏塔并将含有塔顶馏出物（3A）的待处理液体分离成含有乙醛和较高沸点的低沸点组分（4A） 组分（4B）; 其中，在分离步骤中，液体物质含有浓度为0.1至50重量％的甲醇和/或二甲醚进行蒸馏。
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公开(公告)号：US20130310603A1
公开(公告)日：2013-11-21
申请号：US13994373
申请日：2011-12-01
申请人： Masahiko Shimizu , Ryuji Saito , Hiroyuki Miura
发明人： Masahiko Shimizu , Ryuji Saito , Hiroyuki Miura
IPC分类号： C07C51/12
摘要： Acetic acid is produced while inhibiting an increased concentration or production of hydrogen iodide in a carbonylation reactor or corrosion of the carbonylation reactor.A production process of acetic acid comprises a reaction step for continuously allowing methanol to react with carbon monoxide in the presence of a catalyst system comprising a metal catalyst (e.g., a rhodium catalyst), an ionic iodide (e.g., lithium iodide), and methyl iodide in a carbonylation reactor; and in the process, (i) the concentration of the metal catalyst is maintained at not less than 860 ppm on the basis of weight, the concentration of water is maintained at 0.8 to 15% by weight, the concentration of methyl iodide is maintained at not more than 13.9% by weight, and the concentration of methyl acetate is maintained at not less than 0.1% by weight, in a whole liquid phase in the reactor, and/or (ii) the concentration of the metal catalyst is maintained at not less than 660 ppm on the basis of weight, the concentration of water is maintained at 0.8 to 3.9% by weight, the concentration of the ionic iodide is maintained at not more than 13% by weight, the concentration of methyl iodide is maintained at not more than 13.9% by weight, and the concentration of methyl acetate is maintained at not less than 0.1% by weight, in a whole liquid phase in the reactor.
摘要翻译： 产生乙酸，同时抑制羰基化反应器中碘化氢的浓度增加或羰基化反应器的腐蚀。 乙酸的生产方法包括在包含金属催化剂（例如，铑催化剂），离子碘化物（例如碘化锂）和甲基的催化剂体系存在下，连续使甲醇与一氧化碳反应的反应步骤 碘化物在羰基化反应器中; 在该过程中，（i）金属催化剂的浓度基于重量维持在不低于860ppm，水的浓度保持在0.8至15重量％，甲基碘的浓度保持在 不超过13.9重量％，乙酸甲酯的浓度在反应器的整个液相中保持在不小于0.1重量％，和/或（ii）金属催化剂的浓度保持不变 基于重量小于660ppm，水的浓度保持在0.8〜3.9重量％，离子碘的浓度保持在不超过13重量％，甲基碘的浓度保持不变 大于13.9重量％，并且在反应器中的整个液相中，乙酸甲酯的浓度保持在不小于0.1重量％。
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公开(公告)号：US08957248B2
公开(公告)日：2015-02-17
申请号：US13806290
申请日：2011-07-11
CPC分类号： C07C51/12 , C07C51/43 , C07C51/44 , Y02P20/124 , C07C53/08
摘要： A production process of acetic acid comprises a reaction step for continuously allowing at least one member selected from the group consisting of methanol, dimethyl ether, and methyl acetate to react with carbon monoxide in a catalyst system comprising a rhodium catalyst, an iodide salt, and methyl iodide in the presence of acetic acid and water in a plant compromising a reactor 1; a flasher 2; and a distillation column 3; wherein part of the vaporized stream is introduced into a heat exchanger 7. The process achieves a production of acetic acid with a high purity in a resource-saving and energy-saving equipment by efficiently removing a reaction heat even in a large-sized plant.
摘要翻译： 乙酸的制备方法包括在包含铑催化剂，碘化物盐和催化剂体系的催化剂体系中连续地使选自甲醇，二甲醚和乙酸甲酯中的至少一种与一氧化碳反应的反应步骤 甲基碘在乙酸和水的存在下在损害反应器1的植物中; 闪光灯2 和蒸馏塔3; 其中部分蒸发的物流被引入热交换器7.该方法通过有效地除去大型设备中的反应热量，在资源节约和节能设备中实现了高纯度的乙酸生产。
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公开(公告)号：US20130116470A1
公开(公告)日：2013-05-09
申请号：US13806290
申请日：2011-07-11
IPC分类号： C07C51/12
CPC分类号： C07C51/12 , C07C51/43 , C07C51/44 , Y02P20/124 , C07C53/08
摘要： A production process of acetic acid comprises a reaction step for continuously allowing at least one member selected from the group consisting of methanol, dimethyl ether, and methyl acetate to react with carbon monoxide in a catalyst system comprising a rhodium catalyst, an iodide salt, and methyl iodide in the presence of acetic acid and water in a plant compromising a reactor 1; a flasher 2; and a distillation column 3; wherein part of the vaporized stream is introduced into a heat exchanger 7. The process achieves a production of acetic acid with a high purity in a resource-saving and energy-saving equipment by efficiently removing a reaction heat even in a large-sized plant.
摘要翻译： 乙酸的制备方法包括在包含铑催化剂，碘化物盐和催化剂体系的催化剂体系中连续地使选自甲醇，二甲醚和乙酸甲酯中的至少一种与一氧化碳反应的反应步骤 甲基碘在乙酸和水的存在下在损害反应器1的植物中; 闪光灯2 和蒸馏塔3; 其中部分蒸发的物流被引入热交换器7.该方法通过有效地除去大型设备中的反应热量，在资源节约和节能设备中实现了高纯度的乙酸生产。
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