-
公开(公告)号：US20080221228A1
公开(公告)日：2008-09-11
申请号：US11996075
申请日：2006-06-28
IPC分类号： C08J11/08
CPC分类号： C08J11/08 , C08J2325/06 , Y02W30/701
摘要： The invention relates to an enhanced process for the recycling of expanded polystyrene. Said process essentially comprises the reduction in volume of expanded polystyrene by means of dissolution in a solvent, separation of the insoluble components, selective precipitation of the polystyrene with an anti-solvent, separation, drying and extrusion of the precipitated polystyrene, recovery by distillation and recycling of the solvent. The process is characterized in that the anti-solvent is a butanol selected form n-butanol, iso-butanol or sec-butanol and the solvent is dimethyl carbonate, alone or in a mixture containing up to 25% by weight of butanol.
摘要翻译： 本发明涉及一种用于再发泡聚苯乙烯的增强方法。 所述方法基本上包括通过在溶剂中的溶解减少发泡聚苯乙烯的体积，分离不溶组分，用抗溶剂选择性沉淀聚苯乙烯，分离，干燥和挤出沉淀的聚苯乙烯，通过蒸馏回收和 回收溶剂。 该方法的特征在于，反溶剂是选自正丁醇，异丁醇或仲丁醇的丁醇，溶剂是单独的碳酸二甲酯或含至多25重量％丁醇的混合物。
-
公开(公告)号：US07728047B2
公开(公告)日：2010-06-01
申请号：US11996075
申请日：2006-06-28
IPC分类号： C08J11/04
CPC分类号： C08J11/08 , C08J2325/06 , Y02W30/701
摘要： The invention relates to an enhanced process for the recycling of expanded polystyrene. Said process essentially comprises the reduction in volume of expanded polystyrene by means of dissolution in a solvent, separation of the insoluble components, selective precipitation of the polystyrene with an anti-solvent, separation, drying and extrusion of the precipitated polystyrene, recovery by distillation and recycling of the solvent. The process is characterized in that the anti-solvent is a butanol selected form n-butanol, iso-butanol or sec-butanol and the solvent is dimethyl carbonate, alone or in a mixture containing up to 25% by weight of butanol.
摘要翻译： 本发明涉及一种用于再发泡聚苯乙烯的增强方法。 所述方法基本上包括通过在溶剂中的溶解减少发泡聚苯乙烯的体积，分离不溶组分，用抗溶剂选择性沉淀聚苯乙烯，分离，干燥和挤出沉淀的聚苯乙烯，通过蒸馏回收和 回收溶剂。 该方法的特征在于，反溶剂是选自正丁醇，异丁醇或仲丁醇的丁醇，溶剂是单独的碳酸二甲酯或含至多25重量％丁醇的混合物。
-
3.发明授权Method for removing acid and saline contaminants from a gaseous stream leaving a dimethylcarbonate synthesis reactor 失效从离开二甲基碳酸酯合成反应器的气流中除去酸和盐污染物的方法
公开(公告)号：US5527943A
公开(公告)日：1996-06-18
申请号：US272229
申请日：1994-07-08
申请人： Franco Rivetti , Ugo Romano , Guido Garone , Maurizio Ghirardini
发明人： Franco Rivetti , Ugo Romano , Guido Garone , Maurizio Ghirardini
CPC分类号： C07C68/08 , C07C68/005
摘要： A method is described enabling HCl and possible entrained CuCl particulate to be removed from a gas-vapor stream leaving a dimethylcarbonate synthesis reactor. The contaminant removal is effected by one of the process fluids used in a small quantity.
摘要翻译： 描述了一种方法，其使HCl和可能夹带的CuCl颗粒从气 - 气流中除去，留下碳酸二甲酯合成反应器。 污染物去除是通过少量使用的工艺流体之一来实现的。
-
4.发明授权Process for producing dimethyl carbonate and apparatus suitable for such purpose 失效生产碳酸二甲酯的方法和适用于此目的的设备
公开(公告)号：US5536864A
公开(公告)日：1996-07-16
申请号：US364520
申请日：1994-12-27
IPC分类号： B01J27/122 , B01J19/24 , C07B61/00 , C07C68/00 , C07C69/96
CPC分类号： B01J19/2435 , C07C68/005
摘要： The reaction between methanol, carbon monoxide and oxygen for preparing dimethyl carbonate, in the presence of cuprous chloride as the catalyst, is carried out in a special reactor constituted by two parallel, vertical tubes, at the base of one of which the fresh gas and the recycle gas are fed; the reaction products are separated by partially condensing the recirculate vapors.
摘要翻译： 在氯化亚铜作为催化剂的存在下，甲醇，一氧化碳和氧气之间的反应用于制备碳酸二甲酯，在由两个平行的垂直管构成的专用反应器中进行，其中一个是新鲜气体和 再循环气体进料; 通过部分冷凝再循环蒸气来分离反应产物。
-
公开(公告)号：US09006476B2
公开(公告)日：2015-04-14
申请号：US13508171
申请日：2010-10-29
摘要： A process for producing a high-purity dimethyl carbonate, which includes: (I) cooling a commercial grade dimethyl carbonate containing 1 ppm or more of chlorine to a temperature from +6° C. to −5° C. at a rate from 0.5-2° C./hour, to obtain a first solid dimethyl carbonate; (II) heating the first solid dimethyl carbonate to a temperature from −5° C. to +6° C. at a rate of 1-5° C./hour, to obtain a mixture comprising a second solid dimethyl carbonate and a predetermined amount of a first liquid dimethyl carbonate; (III) separating the first liquid dimethyl carbonate from the mixture, to obtain the second solid dimethyl carbonate; (IV) heating the second solid dimethyl carbonate to a temperature from 20° C. to 40° C., to obtain a second liquid dimethyl carbonate, wherein the second liquid dimethyl carbonate has a purity degree higher than 99.99% and a chlorine content lower than or equal to 1 ppm.
摘要翻译： 一种生产高纯度碳酸二甲酯的方法，其包括：（I）以0.5的速度将含有1ppm或更多氯的商业级碳酸二甲酯冷却至+ 6℃至-5℃的温度 -2℃/小时，得到第一固体碳酸二甲酯; （II）以1-5℃/小时的速度将第一固体碳酸二甲酯加热至-5℃至+ 6℃的温度，以获得包含第二固体碳酸二甲酯和预定的 第一液体碳酸二甲酯的量; （III）从混合物中分离第一液体二甲基碳酸酯，得到第二固体碳酸二甲酯; （IV）将第二固体碳酸二甲酯加热至20℃至40℃的温度，得到第二液体碳酸二甲酯，其中第二液体碳酸二甲酯的纯度高于99.99％，氯含量较低 大于等于1ppm。
-
公开(公告)号：US20120283464A1
公开(公告)日：2012-11-08
申请号：US13508171
申请日：2010-10-29
摘要： A process for producing a high-purity dimethyl carbonate, which includes: (I) cooling a commercial grade dimethyl carbonate containing 1 ppm or more of chlorine to a temperature from +6° C. to −5° C. at a rate from 0.5-2° C./hour, to obtain a first solid dimethyl carbonate; (II) heating the first solid dimethyl carbonate to a temperature from −5° C. to +6° C. at a rate of 1-5° C./hour, to obtain a mixture comprising a second solid dimethyl carbonate and a predetermined amount of a first liquid dimethyl carbonate; (III) separating the first liquid dimethyl carbonate from the mixture, to obtain the second solid dimethyl carbonate; (IV) heating the second solid dimethyl carbonate to a temperature from 20° C. to 40° C., to obtain a second liquid dimethyl carbonate, wherein the second liquid dimethyl carbonate has a purity degree higher than 99.99% and a chlorine content lower than or equal to 1 ppm.
摘要翻译： 一种生产高纯度碳酸二甲酯的方法，其包括：（I）以0.5的速度将含有1ppm或更多氯的商业级碳酸二甲酯冷却至+ 6℃至-5℃的温度 -2℃/小时，得到第一固体碳酸二甲酯; （II）以1-5℃/小时的速度将第一固体碳酸二甲酯加热至-5℃至+ 6℃的温度，以获得包含第二固体碳酸二甲酯和预定的 第一液体碳酸二甲酯的量; （III）从混合物中分离第一液体二甲基碳酸酯，得到第二固体碳酸二甲酯; （IV）将第二固体碳酸二甲酯加热至20℃至40℃的温度，得到第二液体碳酸二甲酯，其中第二液体碳酸二甲酯的纯度高于99.99％，氯含量较低 大于等于1ppm。
-
公开(公告)号：US5478962A
公开(公告)日：1995-12-26
申请号：US391169
申请日：1995-02-21
IPC分类号： C07C68/00
CPC分类号： C07C68/005
摘要： Process for the preparation of dimethylcarbonate which consists in feeding oxygen and a mixture of methanol and carbon monoxide to the reactor, with a molar ratio methanol/carbon monoxide of between 1 and 2, this mixture coming directly from the non catalytic direct oxidation of methane with oxygen characterized in that the above molar ratio between methanol and carbon monoxide, with fixed temperature and pressure values, is obtained by maintaining the ratio between methane and oxygen between 1 and 100, by injections of fresh oxygen into a tubular reactor, during the above oxidation reaction.
摘要翻译： 制备碳酸二甲酯的方法，其中包括将氧气和甲醇和一氧化碳的混合物进料到反应器中，甲醇/一氧化碳的摩尔比在1和2之间，该混合物直接来自甲烷的非催化直接氧化， 氧气，其特征在于通过在上述氧化过程中通过将新鲜氧气注射到管式反应器中，通过将甲烷与氧气之间的比例保持在1和100之间来获得具有固定温度和压力值的甲醇和一氧化碳之间的上述摩尔比 反应。
-
-
-
-
-
-
搜索结果
7 条记录 (耗时 0.017 秒)
