公开(公告)号：US07700767B2

公开(公告)日：2010-04-20

申请号：US11897883

申请日：2007-08-31

申请人： Chien-Hsien Li ,  Shou-Li Luo

发明人： Chien-Hsien Li ,  Shou-Li Luo

IPC分类号： C07D223/04

CPC分类号： C07D223/10 ,  C07D201/16

摘要： A system for purifying an aqueous solution of crude caprolactam is provided, which includes a filtration zone (A), an inspection unit (B), a purification zone (C), and a first temporary storage tank (D). The filtration zone (A) contains a filtration apparatus though which an aqueous solution of crude caprolactam is filtered to remove ionic impurities therein, so as to obtain caprolactam-containing filtrate; the inspection unit (B) is used for judging the filtrate from the filtration zone (A) meets the preset inspection standards; the purification zone (C) is used for concentrating and further purifying filtrate meeting the preset inspection standards, thereby forming a final caprolactam product; and the first temporary storage tank (D) is used for receiving the filtrate not meeting the preset inspection standards, which is then mixed with the aqueous solution of crude caprolactam and delivered back to the filtration zone (A).

摘要翻译： 提供了一种用于纯化粗己内酰胺水溶液的体系，其包括过滤区（A），检查单元（B），净化区（C）和第一临时储罐（D）。 过滤区（A）含有过滤装置，通过其过滤粗己内酰胺水溶液以除去其中的离子杂质，得到含己内酰胺的滤液; 检查单元（B）用于判断过滤区域（A）的滤液符合预设的检验标准; 净化区（C）用于浓缩并进一步净化满足预设检查标准的滤液，从而形成最终的己内酰胺产品; 并且第一临时储罐（D）用于接收不符合预设检查标准的滤液，然后将其与粗己内酰胺水溶液混合并输送回过滤区（A）。

公开(公告)号：US20090272700A1

公开(公告)日：2009-11-05

申请号：US12502838

申请日：2009-07-14

申请人： Shu-Hung YANG ,  Shou-Li Luo

发明人： Shu-Hung YANG ,  Shou-Li Luo

IPC分类号： B01D17/00

CPC分类号： C01B21/1481 ,  B01D19/0005

摘要： This invention provides a method for removing organic contaminants from an inorganic processing solution, comprising the step of: introducing the inorganic processing solution comprising organic contaminants into steam stripping treatment; heating the inorganic processing solution; reintroducing the inorganic processing solution into the steam stripping treatment; and removing the organic contaminants from the inorganic processing solution, thereby the inorganic processing solution comprises a total carbon content not more than 300 ppm, based on the total amount of the inorganic processing solution; wherein the step of heating is performed by heat exchange between the inorganic processing solution and desuperheated steam.

摘要翻译： 本发明提供一种从无机处理液中除去有机污染物的方法，其特征在于包括以下步骤：将含有机污染物的无机处理溶液引入蒸汽汽提处理中; 加热无机处理液; 将无机处理溶液重新引入蒸汽汽提处理中; 从无机处理液中除去有机污染物，无机处理液的总碳含量以无机处理液总量计不超过300ppm; 其特征在于，所述加热步骤通过所述无机处理液和过热蒸汽之间的热交换进行。

公开(公告)号：US20080167495A1

公开(公告)日：2008-07-10

申请号：US11900385

申请日：2007-09-11

申请人： Jih-Dar Hwang ,  Hsiu-Li Cheng ,  Shou-Li Luo

发明人： Jih-Dar Hwang ,  Hsiu-Li Cheng ,  Shou-Li Luo

IPC分类号： C07C249/08

CPC分类号： C01B21/1418

摘要： A recycling system for hydroxylamine formation and oximation is proposed. The recycling system includes a hydroxylamine formation zone, an oximation zone, a purification zone, and an adjusting zone having a nitrate absorption tower. An inorganic process solution, used by the recycling system, partially enters the nitrate absorption tower supplementing nitrate, followed by mixing with the residual inorganic process solution, thereby reducing the loss rate of hydroxylamine in the inorganic process solution due to degradation. In addition, the organic impurities with high boiling point in the inorganic process solution can be effectively removed in the purification zone. As a result, the reduced activity or selectivity of the catalyst for hydroxylamine formation, caused by the toxic effects of these organic impurities on the catalyst, can be avoided, and hence, a high concentration of hydroxylamine can be obtained.

摘要翻译： 提出了羟胺形成和肟化的循环系统。 回收系统包括羟胺形成区，肟化区，净化区和具有硝酸盐吸收塔的调节区。 由再循环系统使用的无机工艺溶液部分地进入补充硝酸盐的硝酸盐吸收塔，然后与剩余的无机工艺溶液混合，从而降低由于降解导致的无机工艺溶液中羟胺的损失率。 此外，可以在净化区域中有效地除去无机工艺溶液中具有高沸点的有机杂质。 结果，可以避免由这些有机杂质对催化剂的毒性作用引起的羟胺形成催化剂的活性降低或选择性降低，因此可以获得高浓度的羟胺。

公开(公告)号：US07381843B2

公开(公告)日：2008-06-03

申请号：US11534167

申请日：2006-09-21

申请人： Shu-Hung Yang ,  Shou-Li Luo

发明人： Shu-Hung Yang ,  Shou-Li Luo

IPC分类号： C07C239/08

CPC分类号： C01B21/1418

摘要： A method for preparing hydroxylamine by reducing nitric acid or its salt with hydrogen gas in an aqueous medium in the presence of a catalyst, wherein reduction of nitric acid or its salt is performed in a reactor comprising a reaction section, a cooler disposed at the lower portion of the reactor, and a middle gas distributor and a lower gas distributor respectively disposed above and below the cooler for introducing hydrogen gas into the reaction section. According to the present invention, gas distribution become more uniform by disposing the gas distributors at different positions of the reactor, which results in higher yield of hydroxylamine.

摘要翻译： 一种在催化剂存在下，通过在含水介质中还原硝酸或其盐与硝酸或其盐形成羟胺的方法，其中硝酸或其盐的还原反应是在反应器中进行的，所述反应器包括反应段，位于下部的冷却器 分别设置在冷却器上方和下方的中间气体分配器和下部气体分配器，以将氢气引入反应部分。 根据本发明，通过将气体分布器设置在反应器的不同位置，气体分布变得更均匀，这导致羟胺的较高产率。

公开(公告)号：US20070253885A1

公开(公告)日：2007-11-01

申请号：US11727819

申请日：2007-03-28

申请人： Shu-Hung Yang ,  Shou-Li Luo

发明人： Shu-Hung Yang ,  Shou-Li Luo

IPC分类号： C01B21/14 ,  A62D3/20 ,  B01J19/00

CPC分类号： C01B21/1481 ,  B01D19/0005

摘要： A steam stripping device for an inorganic processing solution is provided, which includes a steam stripping unit for heat stripping the inorganic processing solution; a heat exchanging unit coupled to the steam unit for heating the inorganic processing solution; and a desuperheating unit for decreasing the temperature of a steam when overheated before the steam is fed into the heat exchanging unit by cooling liquid. The device can be applied to the inorganic processing solution for removing organic contaminants contained therein. By the provision of the desuperheating unit, the adverse influence on the inorganic processing solution caused by partially superheating can be prevented.

摘要翻译： 提供了一种用于无机处理溶液的汽提装置，其包括用于热无机处理溶液的汽提装置; 耦合到所述蒸汽单元的用于加热所述无机处理溶液的热交换单元; 以及减热单元，用于在蒸汽通过冷却液体进入热交换单元之前过热时降低蒸汽的温度。 该装置可以应用于无机处理溶液以除去其中所含的有机污染物。 通过设置减温装置，可以防止由部分过热引起的对无机处理液的不利影响。

公开(公告)号：US07671236B2

公开(公告)日：2010-03-02

申请号：US11986366

申请日：2007-11-20

申请人： Jih-Dar Hwang ,  Kai-Hung Haung ,  Hsiu-Li Cheng ,  Shou-Li Luo

发明人： Jih-Dar Hwang ,  Kai-Hung Haung ,  Hsiu-Li Cheng ,  Shou-Li Luo

IPC分类号： C07C249/08

CPC分类号： C07C249/08 ,  C07C2601/14 ,  C07C251/44

摘要： Provided is a process of producing cyclohexanone oxime comprising the steps of: pre-mixing an inorganic process solution containing a high concentration of hydroxylamine phosphate with a first stream of cyclohexanone such that the concentration of hydroxylamine phosphate is reduced to 80% or less of its initial concentration; and subjecting hydroxylamine phosphate in the premixed inorganic process solution to an oximation reaction with a second stream of cyclohexanone. According to the process, oximation is performed after the inorganic process solution containing a high concentration of hydroxylamine phosphate has been pre-mixed with the first stream of cyclohexanone to reduce the concentration of hydroxylamine phosphate. As a result, not only that the efficiency of oximation and the yield of cyclohexanone oxime are increased, but also the organic content of the inorganic process solution discharged from the oximation tower is reduced.

摘要翻译： 提供了制备环己酮肟的方法，包括以下步骤：将含有高浓度磷酸羟胺的无机工艺溶液与第一环己酮流预混合，使得磷酸羟胺的浓度降低至其初始浓度的80％以下 浓度; 并将预混合的无机工艺溶液中的磷酸羟胺与第二个环己酮流进行肟化反应。 根据该方法，在含有高浓度磷酸羟胺的无机处理溶液与第一环己酮流预混合后，进行肟化，以降低磷酸羟胺的浓度。 结果，不仅提高了肟化的效率和环己酮肟的收率，还降低了从肟化塔排出的无机工艺溶液的有机含量。

公开(公告)号：US20080167496A1

公开(公告)日：2008-07-10

申请号：US11986366

申请日：2007-11-20

申请人： Jih-Dar Hwang ,  Kai-Hung Haung ,  Hsiu-Li Cheng ,  Shou-Li Luo

发明人： Jih-Dar Hwang ,  Kai-Hung Haung ,  Hsiu-Li Cheng ,  Shou-Li Luo

IPC分类号： C07C249/08

CPC分类号： C07C249/08 ,  C07C2601/14 ,  C07C251/44

摘要： Provided is a process of producing cyclohexanone oxime comprising the steps of: pre-mixing an inorganic process solution containing a high concentration of hydroxylamine phosphate with a first stream of cyclohexanone such that the concentration of hydroxylamine phosphate is reduced to 80% or less of its initial concentration; and subjecting hydroxylamine phosphate in the premixed inorganic process solution to an oximation reaction with a second stream of cyclohexanone. According to the process, oximation is performed after the inorganic process solution containing a high concentration of hydroxylamine phosphate has been pre-mixed with the first stream of cyclohexanone to reduce the concentration of hydroxylamine phosphate. As a result, not only that the efficiency of oximation and the yield of cyclohexanone oxime are increased, but also the organic content of the inorganic process solution discharged from the oximation tower is reduced.

摘要翻译： 提供了制备环己酮肟的方法，包括以下步骤：将含有高浓度磷酸羟胺的无机工艺溶液与第一环己酮流预混合，使得磷酸羟胺的浓度降低至其初始浓度的80％以下 浓度; 并将预混合的无机工艺溶液中的磷酸羟胺与第二个环己酮流进行肟化反应。 根据该方法，在含有高浓度磷酸羟胺的无机处理溶液与第一环己酮流预混合后，进行肟化，以降低磷酸羟胺的浓度。 结果，不仅提高了肟化的效率和环己酮肟的收率，还降低了从肟化塔排出的无机工艺溶液的有机含量。

公开(公告)号：US20080131339A1

公开(公告)日：2008-06-05

申请号：US12029183

申请日：2008-02-11

申请人： Shu-Hung YANG ,  Shou-Li Luo

发明人： Shu-Hung YANG ,  Shou-Li Luo

IPC分类号： B01J19/00 ,  F28D21/00

CPC分类号： C01B21/1418

摘要： A method for preparing hydroxylamine by reducing nitric acid or its salt with hydrogen gas in an aqueous medium in the presence of a catalyst, wherein reduction of nitric acid or its salt is performed in a reactor comprising a reaction section, a cooler disposed at the lower portion of the reactor, and a middle gas distributor and a lower gas distributor respectively disposed above and below the cooler for introducing hydrogen gas into the reaction section. According to the present invention, gas distribution become more uniform by disposing the gas distributors at different positions of the reactor, which results in higher yield of hydroxylamine.

摘要翻译： 一种在催化剂存在下，通过在含水介质中还原硝酸或其盐与硝酸或其盐形成羟胺的方法，其中硝酸或其盐的还原反应是在反应器中进行的，所述反应器包括反应段，位于下部的冷却器 分别设置在冷却器上方和下方的中间气体分配器和下部气体分配器，以将氢气引入反应部分。 根据本发明，通过将气体分布器设置在反应器的不同位置，气体分布变得更均匀，这导致羟胺的较高产率。

公开(公告)号：US07785549B2

公开(公告)日：2010-08-31

申请号：US11900385

申请日：2007-09-11

申请人： Jih-Dar Hwang ,  Hsiu-Li Cheng ,  Shou-Li Luo

发明人： Jih-Dar Hwang ,  Hsiu-Li Cheng ,  Shou-Li Luo

IPC分类号： B01J8/00 ,  B01J8/04 ,  C07C259/00

CPC分类号： C01B21/1418

摘要： A recycling system for hydroxylamine formation and oximation is proposed. The recycling system includes a hydroxylamine formation zone, an oximation zone, a purification zone, and an adjusting zone having a nitrate absorption tower. An inorganic process solution, used by the recycling system, partially enters the nitrate absorption tower supplementing nitrate, followed by mixing with the residual inorganic process solution, thereby reducing the loss rate of hydroxylamine in the inorganic process solution due to degradation. In addition, the organic impurities with high boiling point in the inorganic process solution can be effectively removed in the purification zone. As a result, the reduced activity or selectivity of the catalyst for hydroxylamine formation, caused by the toxic effects of these organic impurities on the catalyst, can be avoided, and hence, a high concentration of hydroxylamine can be obtained.

摘要翻译： 提出了羟胺形成和肟化的循环系统。 回收系统包括羟胺形成区，肟化区，净化区和具有硝酸盐吸收塔的调节区。 由再循环系统使用的无机工艺溶液部分地进入补充硝酸盐的硝酸盐吸收塔，然后与剩余的无机工艺溶液混合，从而降低由于降解导致的无机工艺溶液中羟胺的损失率。 此外，可以在净化区域中有效地除去无机工艺溶液中具有高沸点的有机杂质。 结果，可以避免由这些有机杂质对催化剂的毒性作用引起的羟胺形成催化剂的活性降低或选择性降低，因此可以获得高浓度的羟胺。

公开(公告)号：US20080058513A1

公开(公告)日：2008-03-06

申请号：US11897883

申请日：2007-08-31

申请人： Chien-Hsien Li ,  Shou-Li Luo

发明人： Chien-Hsien Li ,  Shou-Li Luo

IPC分类号： C07D201/16

CPC分类号： C07D223/10 ,  C07D201/16

摘要： A system for purifying an aqueous solution of crude caprolactam is provided, which includes a filtration zone (A), an inspection unit (B), a purification zone (C), and a first temporary storage tank (D). The filtration zone (A) contains a filtration apparatus though which an aqueous solution of crude caprolactam is filtered to remove ionic impurities therein, so as to obtain caprolactam-containing filtrate; the inspection unit (B) is used for judging the filtrate from the filtration zone (A) meets the preset inspection standards; the purification zone(C) is used for concentrating and further purifying filtrate meeting the preset inspection standards, thereby forming a final caprolactam product; and the first temporary storage tank (D) is used for receiving the filtrate not meeting the preset inspection standards, which is then mixed with the aqueous solution of crude caprolactam and delivered back to the filtration zone (A).

摘要翻译： 提供了一种用于纯化粗己内酰胺水溶液的体系，其包括过滤区（A），检查单元（B），净化区（C）和第一临时储罐（D）。 过滤区（A）含有过滤装置，通过其过滤粗己内酰胺水溶液以除去其中的离子杂质，得到含己内酰胺的滤液; 检查单元（B）用于判断过滤区域（A）的滤液符合预设的检验标准; 净化区（C）用于浓缩并进一步净化满足预设检查标准的滤液，从而形成最终的己内酰胺产品; 并且第一临时储罐（D）用于接收不符合预设检查标准的滤液，然后将其与粗己内酰胺水溶液混合并输送到过滤区（A）。