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1.发明申请公开(公告)号：US20110297528A1
公开(公告)日：2011-12-08
申请号：US12801385
申请日：2010-06-07
申请人： Ji-Young Jang , Kuang-Yeu Wu , Ming-Mou Yang
发明人： Ji-Young Jang , Kuang-Yeu Wu , Ming-Mou Yang
IPC分类号： B01D3/36
摘要： The invention disclosed is an apparatus and method for the recovery of acetic acid, azeotropic agent, extraction agent, re-usable water and other reaction products such as p-toluic acid, from an aqueous stream generated during a terephthalic acid production process, having superior energy efficiency and reduced water consumption. The apparatus of the invention includes: an azeotropic distillation column to remove water from acetic acid, a pair of mother liquor extraction columns sequentially connected in series for primary recovery of extraction solvent and other organics, an azeotropic agent stripper for recovery of azeotropic agent and a post-separation solvent stripper distillation column for further separation of the aqueous bottoms stream from said extraction columns into a volatiles stream comprising mainly organics with a very low amount of water and a liquid stream comprising water containing very low amounts of organics, each stream being sufficiently pure that it can be recycled for reuse in the purification of crude terephthalic acid.
摘要翻译： 本发明公开了一种用于从对苯二甲酸生产过程中产生的水流中回收乙酸，共沸剂，萃取剂，可再利用的水和其它反应产物如对甲苯甲酸的装置和方法，具有优异的 能效和减少用水量。 本发明的装置包括：用于从乙酸中除去水的共沸蒸馏塔，一系列串联连续的初级回收萃取溶剂和其它有机物的母液萃取塔，用于回收共沸剂的共沸剂汽提塔和 分离后溶剂汽提塔蒸馏塔，用于将含水塔底物流从所述提取塔进一步分离成挥发物料流，其主要包含具有非常少量水的有机物和包含非常少量有机物的水的液体流，每个流充分 纯净，可以回收再利用于粗对苯二甲酸的纯化。
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2.发明授权公开(公告)号：US08382961B2
公开(公告)日：2013-02-26
申请号：US12801385
申请日：2010-06-07
申请人： Ji-Young Jang , Kuang-Yeu Wu , Ming-Mou Yang
发明人： Ji-Young Jang , Kuang-Yeu Wu , Ming-Mou Yang
IPC分类号： B01D11/00
摘要： The invention disclosed is an apparatus and method for the recovery of acetic acid, azeotropic agent, extraction agent, re-usable water and other reaction products such as p-toluic acid, from an aqueous stream generated during a terephthalic acid production process, having superior energy efficiency and reduced water consumption. The apparatus of the invention includes: an azeotropic distillation column to remove water from acetic acid, a pair of mother liquor extraction columns sequentially connected in series for primary recovery of extraction solvent and other organics, an azeotropic agent stripper for recovery of azeotropic agent and a post-separation solvent stripper distillation column for further separation of the aqueous bottoms stream from said extraction columns into a volatiles stream comprising mainly organics with a very low amount of water and a liquid stream comprising water containing very low amounts of organics, each stream being sufficiently pure that it can be recycled for reuse in the purification of crude terephthalic acid.
摘要翻译： 本发明公开了一种用于从对苯二甲酸生产过程中产生的水流中回收乙酸，共沸剂，萃取剂，可再利用的水和其它反应产物如对甲苯甲酸的装置和方法，具有优异的 能效和减少用水量。 本发明的装置包括：用于从乙酸中除去水的共沸蒸馏塔，一系列串联连续串联用于初级回收提取溶剂和其它有机物的母液萃取塔，用于回收共沸剂的共沸剂汽提塔和 分离后溶剂汽提塔蒸馏塔，用于将含水塔底物流从所述提取塔进一步分离成挥发物料流，其主要包含具有非常少量水的有机物和包含非常少量有机物的水的液体流，每个流充分 纯净，可以回收再利用于粗对苯二甲酸的纯化。
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3.发明授权公开(公告)号：US09193660B2
公开(公告)日：2015-11-24
申请号：US13986969
申请日：2013-06-20
摘要： A carboxylic acid e.g. acetic acid, is recovered from an aqueous feed stream containing the corresponding ester, an alcohol and a small amount of water by catalytically dehydrating the alcohol to the corresponding ether and water, and reacting the water with the ester to generate a liquid carboxylic acid rich product stream. The acid is recovered by distillation. In a second embodiment, additional alcohol and/or water are co-fed with the feed or fed directly to a catalytic distillation column, resulting in a liquid bottom product stream of substantially pure acetic acid and a top distillate stream of substantially pure ether.
摘要翻译： 羧酸例如 乙酸通过将醇催化脱水至相应的醚和水从含有相应的酯，醇和少量水的含水进料流中回收，并使水与酯反应以产生液体富含羧酸的产物 流。 酸通过蒸馏回收。 在第二个实施方案中，额外的醇和/或水与进料共同进料或直接进料到催化蒸馏塔，导致基本上纯的乙酸的液体底部产物流和基本上纯的乙醚的顶部馏出物流。
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4.发明申请公开(公告)号：US20140378703A1
公开(公告)日：2014-12-25
申请号：US13986969
申请日：2013-06-20
IPC分类号： C07C51/42
摘要： A carboxylic acid e.g. acetic acid, is recovered from an aqueous feed stream containing the corresponding ester, an alcohol and a small amount of water by catalytically dehydrating the alcohol to the corresponding ether and water, and reacting the water with the ester to generate a liquid carboxylic acid rich product stream. The acid is recovered by distillation. In a second embodiment, additional alcohol and/or water are co-fed with the feed or fed directly to a catalytic distillation column, resulting in a liquid bottom product stream of substantially pure acetic acid and a top distillate stream of substantially pure ether.
摘要翻译： 羧酸例如 乙酸通过将醇催化脱水至相应的醚和水从含有相应的酯，醇和少量水的含水进料流中回收，并使水与酯反应以产生液体富含羧酸的产物 流。 酸通过蒸馏回收。 在第二个实施方案中，额外的醇和/或水与进料共同进料或直接进料到催化蒸馏塔，导致基本上纯的乙酸的液体底部产物流和基本上纯的乙醚的顶部馏出物流。
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公开(公告)号：US20130012738A1
公开(公告)日：2013-01-10
申请号：US13573416
申请日：2012-09-14
IPC分类号： C07C51/48
CPC分类号： C07C51/46 , B01D3/143 , B01D3/36 , B01D11/0426 , B01D11/0488 , B01D11/0492 , C07C51/48 , C07C53/08
摘要： A method for recovering acetic acid from an aqueous feed stream containing acetic acid and, in particular, a stream generated during terephthalic acid production includes feeding a water-rich feed stream to a liquid-liquid extraction column, which includes a guard bed near the top thereof for conversion of alcohol within the feed stream by reaction with acetic acid to the corresponding ester; and removing residual water from acetic acid in an azeotropic distillation column by feeding water-poor feed streams from the extraction column to the distillation column at a height at which the mixture has a similar water concentration. The liquid-liquid extraction column produces an extract comprising an extraction solvent and acetic acid which is sent to the azeotropic distillation column to separate residual water and acetic acid.
摘要翻译： 从含有乙酸的水性进料流中回收乙酸的方法，特别是在对苯二甲酸生产过程中产生的流中的方法包括将富含水的进料流进料到液 - 液萃取塔，液柱萃取塔包括靠近顶部的保护床 其用于通过与乙酸与相应的酯反应在进料流内转化醇; 并通过在混合物具有相似的水浓度的高度将来自萃取塔的贫水进料流送入蒸馏塔，在共沸蒸馏塔中从乙酸中除去残留的水。 液 - 液萃取柱产生包含萃取溶剂和乙酸的提取物，其被送入共沸蒸馏塔以分离残留的水和乙酸。
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6.发明授权公开(公告)号：US08268131B2
公开(公告)日：2012-09-18
申请号：US12382801
申请日：2009-03-24
CPC分类号： C07C51/46 , B01D3/143 , B01D3/36 , B01D11/0426 , B01D11/0488 , B01D11/0492 , C07C51/48 , C07C53/08
摘要： The invention disclosed relates to an apparatus and method for recovering acetic acid from an aqueous feed stream containing acetic acid, in particular a stream generated during terephthalic acid production. The apparatus includes: a liquid-liquid extraction column to which water-rich feed streams are fed, having a guard bed situated near the top and within the extraction column for conversion by reaction with acetic acid of alcohol within the mixture to the corresponding ester; and an azeotropic distillation column to remove residual water from acetic acid, to which water-poor feed streams are fed directly at a height of the azeotropic distillation column at which the mixture therein has a similar water concentration. The liquid-liquid extraction column produces an extract comprising an extraction solvent and acetic acid which is sent to the azeotropic distillation column to separate residual water and acetic acid.
摘要翻译： 所公开的本发明涉及从含有乙酸的含水进料流中回收乙酸的设备和方法，特别是在对苯二甲酸生产期间产生的流。 该装置包括：液体 - 液体萃取塔，其中富含进料物流被供给到该液 - 液萃取塔中，具有位于顶部附近和萃取塔内的保护床，用于通过与混合物中的乙酸乙酯反应而转化成相应的酯; 和共沸蒸馏塔以从乙酸中除去残留的水，在其中混合物具有类似水浓度的共沸蒸馏塔的高度处直接向其供应不良的进料流。 液 - 液萃取柱产生包含萃取溶剂和乙酸的提取物，其被送入共沸蒸馏塔以分离残留的水和乙酸。
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公开(公告)号：US08506766B2
公开(公告)日：2013-08-13
申请号：US13573416
申请日：2012-09-14
CPC分类号： C07C51/46 , B01D3/143 , B01D3/36 , B01D11/0426 , B01D11/0488 , B01D11/0492 , C07C51/48 , C07C53/08
摘要： A method for recovering acetic acid from an aqueous feed stream containing acetic acid and, in particular, a stream generated during terephthalic acid production includes feeding a water-rich feed stream to a liquid-liquid extraction column, which includes a guard bed near the top thereof for conversion of alcohol within the feed stream by reaction with acetic acid to the corresponding ester, and removing residual water from acetic acid in an azeotropic distillation column by feeding water-poor feed streams from the extraction column to the distillation column at a height at which the mixture has a similar water concentration. The liquid-liquid extraction column produces an extract of an extraction solvent and acetic acid which is sent to the azeotropic distillation column to separate residual water and acetic acid.
摘要翻译： 从含有乙酸的水性进料流中回收乙酸的方法，特别是在对苯二甲酸生产过程中产生的流中的方法包括将富含水的进料流进料到液 - 液萃取塔，液柱萃取塔包括靠近顶部的保护床 其用于通过与乙酸反应转化为进料流中的醇至相应的酯，并且通过将来自萃取塔的不含水的进料流进料到蒸馏塔中，在共沸蒸馏塔中从乙酸中除去残留的水， 该混合物具有相似的水浓度。 液 - 液萃取柱产生萃取溶剂和乙酸的萃取液，将其送入共沸蒸馏塔分离出残留的水和乙酸。
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8.发明申请公开(公告)号：US20100249457A1
公开(公告)日：2010-09-30
申请号：US12382801
申请日：2009-03-24
CPC分类号： C07C51/46 , B01D3/143 , B01D3/36 , B01D11/0426 , B01D11/0488 , B01D11/0492 , C07C51/48 , C07C53/08
摘要： The invention disclosed relates to an apparatus and method for recovering acetic acid from an aqueous feed stream containing acetic acid, in particular a stream generated during terephthalic acid production. The apparatus includes: a liquid-liquid extraction column to which water-rich feed streams are fed, having a guard bed situated near the top and within the extraction column for conversion by reaction with acetic acid of alcohol within the mixture to the corresponding ester; and an azeotropic distillation column to remove residual water from acetic acid, to which water-poor feed streams are fed directly at a height of the azeotropic distillation column at which the mixture therein has a similar water concentration. The liquid-liquid extraction column produces an extract comprising an extraction solvent and acetic acid which is sent to the azeotropic distillation column to separate residual water and acetic acid.
摘要翻译： 所公开的本发明涉及从含有乙酸的含水进料流中回收乙酸的设备和方法，特别是在对苯二甲酸生产期间产生的流。 该装置包括：液体 - 液体萃取塔，其中富含进料物流被供给到该液 - 液萃取塔中，其具有靠近顶部和萃取塔内的保护床，用于通过与混合物中的乙醇的乙酸反应转化成相应的酯; 和共沸蒸馏塔以从乙酸中除去残留的水，在其中混合物具有类似水浓度的共沸蒸馏塔的高度处直接向其供应不良的进料流。 液 - 液萃取柱产生包含萃取溶剂和乙酸的提取物，其被送入共沸蒸馏塔以分离残留的水和乙酸。
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公开(公告)号：US20050091998A1
公开(公告)日：2005-05-05
申请号：US10917287
申请日：2004-08-13
申请人： Eun-Jun Cho , Yoon-Jei Hwang , Yun-Ho Ryu , Cheol-Min Kim , Chan-Ho Song , Chang-Min Choi , Ji-Young Jang , Young-Seob Choi , Woo-Ho Cha , Seung-Youp Hyun , Won-Hee Lee
发明人： Eun-Jun Cho , Yoon-Jei Hwang , Yun-Ho Ryu , Cheol-Min Kim , Chan-Ho Song , Chang-Min Choi , Ji-Young Jang , Young-Seob Choi , Woo-Ho Cha , Seung-Youp Hyun , Won-Hee Lee
CPC分类号： F25B49/022 , F25B2400/0751 , F25B2600/021 , F25B2600/0251 , Y02B30/741
摘要： A method for controlling operations of an air-conditioner includes: a step in which when an operation load of an air-conditioner increases, if an outputted compressing capacity of the air-conditioner is smaller than a compressing capacity corresponding to the operation load and an operation frequency of the first compressor is a maximum frequency of the first compressor, a second compressor is operated; and a step in which when the operation load is reduced, if the outputted compressing capacity of the air-conditioner is greater than the compressing capacity corresponding to the operation load and the operation frequency of the first compressor is a minimum frequency of the first compressor, the second compressor is stopped.
摘要翻译： 一种用于控制空调的操作的方法包括：当空调的操作负载增加时，如果空调的输出压缩容量小于与操作负载相对应的压缩容量，则 第一压缩机的运转频率是第一压缩机的最大频率，第二压缩机运转; 以及当操作负载减小时，如果空调的输出压缩容量大于对应于操作负载的压缩容量，并且第一压缩机的操作频率是第一压缩机的最小频率， 第二压缩机停止。
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公开(公告)号：US20060032255A1
公开(公告)日：2006-02-16
申请号：US11033163
申请日：2005-01-12
申请人： Yoon-Jei Hwang , Chan-Ho Song , Ji-Young Jang , Jeong-Taek Park
发明人： Yoon-Jei Hwang , Chan-Ho Song , Ji-Young Jang , Jeong-Taek Park
CPC分类号： F25B49/025 , F25B2600/02 , F25B2600/025 , F25B2600/0251 , F25B2600/0253 , F25B2700/21152 , F25B2700/2116 , Y02B30/741
摘要： An apparatus for controlling operation of an air conditioner having a compressor for compressing refrigerant and a heat exchanger for heat-exchanging refrigerant with ambient air, includes a temperature sensor installed on a passage through which refrigerant passes, for detecting a temperature of refrigerant; and a control unit connected to the temperature sensor, for controlling the operation of the compressor in response to the temperature detected by the temperature sensor. Accordingly, an overload of the compressor is determined on the basis of a temperature of refrigerant, which is detected by the temperature sensor, so that an effective compressor overload response can be made.
摘要翻译： 一种用于控制具有用于压缩制冷剂的压缩机和用于与周围空气热交换制冷剂的热交换器的空调的操作的装置，包括安装在制冷剂通过的通道上的温度传感器，用于检测制冷剂的温度; 以及控制单元，连接到所述温度传感器，用于响应于由所述温度传感器检测到的温度来控制所述压缩机的操作。 因此，基于由温度传感器检测到的制冷剂的温度来确定压缩机的过载，从而可以进行有效的压缩机过载响应。
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