公开(公告)号：US09365536B2

公开(公告)日：2016-06-14

申请号：US14433162

申请日：2013-11-19

申请人： Kureha Corporation

发明人： Takuya Ohzawa ,  Naoki Hayashi ,  Kentaro Otawara ,  Kazuyuki Yamane

IPC分类号： C07D319/00 ,  C07D319/12 ,  B01J19/24

CPC分类号： B01D3/26 ,  B01J19/24 ,  B01J2219/00018 ,  B01J2219/24 ,  C07D319/12

摘要： A method for producing glycolide provided with: step (1) wherein a GAO composition, which preferably contains a high-boiling-point organic solvent or a solubilizing agent, is supplied into a reactor and heated to a temperature at which a depolymerization reaction of the GAO occurs; step (2) wherein the heating is continued to subject the GAO to the depolymerization reaction, thereby producing glycolide; step (3) wherein glycolide is distilled out of the reactor; step (4) wherein the distillate is introduced into a rectifier and is rectified by means of gas-liquid countercurrent contact; and step (5) wherein glycolide is recovered. A method for purifying crude glycolide provided with: step (i) wherein a crude glycolide composition, which preferably contains a high-boiling-point organic solvent or a solubilizing agent, is supplied into a reactor and heated so that glycolicde is distilled; step (ii) wherein the distillate is introduced into a rectifier and is rectified by means of gas-liquid countercurrent contact; and step (iii) wherein glycolide is recovered. A glycolide producing apparatus and a crude glycolide purifying apparatus, each of which is provided with a reactor and a rectifier.

摘要翻译： 一种生产乙交酯的方法，其具有：步骤（1），其中将优选含有高沸点有机溶剂或增溶剂的GAO组合物供入反应器中，并加热至其中解聚反应的温度 GAO发生; 步骤（2），其中继续加热使GAO经历解聚反应，由此生成乙交酯; 步骤（3）其中将乙交酯从反应器中蒸出; 步骤（4），其中将馏出物引入整流器并通过气液逆流接触进行整流; 和回收乙交酯的步骤（5）。 提供粗品乙交酯的方法，其具有：步骤（i），其中将优选含有高沸点有机溶剂或增溶剂的粗乙醇酸组合物供入反应器中并加热使乙醇转化; 步骤（ii）其中将馏出物引入整流器并通过气液逆流接触进行精馏; 和回收乙交酯的步骤（iii）。 一种乙交酯生产装置和一种粗乙醇酸提纯装置，每个装置设有反应器和整流器。

公开(公告)号：US20150259320A1

公开(公告)日：2015-09-17

申请号：US14433162

申请日：2013-11-19

申请人： KUREHA CORPORATION

发明人： Takuya Ohzawa ,  Naoki Hayashi ,  Kentaro Otawara ,  Kazuyuki Yamane

IPC分类号： C07D319/12 ,  B01J19/24

CPC分类号： B01D3/26 ,  B01J19/24 ,  B01J2219/00018 ,  B01J2219/24 ,  C07D319/12

摘要： A method for producing glycolide provided with: step (1) wherein a GAO composition, which preferably contains a high-boiling-point organic solvent or a solubilizing agent, is supplied into a reactor and heated to a temperature at which a depolymerization reaction of the GAO occurs; step (2) wherein the heating is continued to subject the GAO to the depolymerization reaction, thereby producing glycolide; step (3) wherein glycolide is distilled out of the reactor; step (4) wherein the distillate is introduced into a rectifier and is rectified by means of gas-liquid countercurrent contact; and step (5) wherein glycolide is recovered. A method for purifying crude glycolide provided with: step (i) wherein a crude glycolide composition, which preferably contains a high-boiling-point organic solvent or a solubilizing agent, is supplied into a reactor and heated so that glycolicde is distilled; step (ii) wherein the distillate is introduced into a rectifier and is rectified by means of gas-liquid countercurrent contact; and step (iii) wherein glycolide is recovered. A glycolide producing apparatus and a crude glycolide purifying apparatus, each of which is provided with a reactor and a rectifier.

摘要翻译： 一种生产乙交酯的方法，其具有：步骤（1），其中将优选含有高沸点有机溶剂或增溶剂的GAO组合物供入反应器中，并加热至其中解聚反应的温度 GAO发生; 步骤（2），其中继续加热使GAO经历解聚反应，由此生成乙交酯; 步骤（3）其中将乙交酯从反应器中蒸出; 步骤（4），其中将馏出物引入整流器并通过气液逆流接触进行整流; 和回收乙交酯的步骤（5）。 提供粗品乙交酯的方法，其具有：步骤（i），其中将优选含有高沸点有机溶剂或增溶剂的粗乙醇酸组合物供入反应器中并加热使乙醇转化; 步骤（ii）其中将馏出物引入整流器并通过气液逆流接触进行精馏; 和回收乙交酯的步骤（iii）。 一种乙交酯生产设备和一种粗乙醇酸提纯设备，每个设备都设有电抗器和整流器。