PROCESS FOR SYNTHESIS OF ACROLEIN
    3.
    发明申请
    PROCESS FOR SYNTHESIS OF ACROLEIN 失效
    ACROLEIN合成方法

    公开(公告)号:US20120310016A1

    公开(公告)日:2012-12-06

    申请号:US13577680

    申请日:2010-02-09

    IPC分类号: C07C45/00

    摘要: An object of the present invention is to provide a technology which can suppress the blockage and abrasion of pipes and devices caused by the production of by-products and stably synthesize acrolein at a high yield, under a condition in which energy efficiency is improved by an elevated concentration of glycerol in a reaction liquid, in a process for synthesis of acrolein by reacting supercritical water and an acid with glycerol. An embodiment of the present invention includes: setting a concentration of glycerol in the reaction liquid at 30% by weight or lower; also cooling the reaction liquid to a temperature between a temperature (300° C. or lower) at which the reaction stops and a temperature (100° C. or higher) at which tar contained in the reaction liquid can keep a state in which its viscosity is sufficiently low; then separating and removing carbon particles from the reaction liquid; subsequently cooling the reaction liquid to a temperature which is a boiling point of water or lower and at which the tar component in the reaction liquid does not adhere to devices; and then decompressing the cooled reaction liquid.

    摘要翻译: 本发明的目的是提供一种能够抑制副产物生成引起的管道和装置的堵塞和磨损的技术,并且在能够提高能量效率的条件下以高产率稳定地合成丙烯醛 在超临界水和酸与甘油反应合成丙烯醛的方法中,反应液中甘油浓度升高。 本发明的一个实施方案包括:将反应液中甘油的浓度设定为30重量%以下; 还将反应液体冷却至反应停止的温度(300℃以下)和反应液中所含的焦油的温度(100℃以上)可以保持其状态 粘度足够低; 然后从反应液中分离除去碳颗粒; 随后将反应液体冷却至沸点低于水的温度,反应液中的焦油成分不附着在装置上; 然后减压冷却的反应液。

    Equipment and method for producing polyhydroxycarboxylic acid
    4.
    发明授权
    Equipment and method for producing polyhydroxycarboxylic acid 有权
    多羟基羧酸的制备方法和设备

    公开(公告)号:US08153754B2

    公开(公告)日:2012-04-10

    申请号:US12544477

    申请日:2009-08-20

    IPC分类号: C08G63/08 B01D53/00 B01J19/18

    摘要: An equipment for producing polyhydroxycarboxylic acid, includes a ring-opening polymerization apparatus, a liquid phase devolatilizing apparatus, and a drying apparatus, wherein an indirect heat exchanger is connected to a vent gas discharge path of the liquid phase devolatilizing apparatus. The indirect heat exchanger captures a dispersed in-process substance containing hydroxycarboxylic acid cyclic dimers and transfers the substance to the ring-opening polymerization apparatus; a wet condenser and a hot well are connected to a vent gas discharge path of the indirect heat exchanger and that of the drying apparatus, respectively. The wet condenser captures a dispersed in process substance containing the cyclic dimers with the use of a refrigerant containing hydroxycarboxylic acid corresponding to the cyclic dimers and transfers the substance to the hot well; the hot well causes hydrolysis of the cyclic dimers for generation of hydroxycarboxylic acid; the generated hydroxycarboxylic acid is mixed with a refrigerant and the mixture is circulated to the wet condenser; and hydroxycarboxylic acid is highly concentrated via circulation between the wet condenser and the hot well and then discharged.

    摘要翻译: 用于制备聚羟基羧酸的设备包括开环聚合设备,液相脱挥发酵设备和干燥设备,其中间接热交换器连接到液相脱挥发设备的通气气体排放路径。 间接热交换器捕获含有羟基羧酸环二聚体的分散的在线物质并将物质转移到开环聚合装置中; 湿式冷凝器和热井分别连接到间接热交换器和干燥装置的排放气体排出路径。 湿式冷凝器使用含有对应于环状二聚体的羟基羧酸的制冷剂捕获含有环状二聚体的分散过程物质,并将物质转移到热井中; 热阱引起环状二聚体的水解产生羟基羧酸; 将所生成的羟基羧酸与制冷剂混合,并将混合物循环至湿式冷凝器; 并且羟基羧酸通过湿式冷凝器和热井之间的循环高度浓缩,然后排出。

    PROCESS AND SYSTEM FOR PURIFICATION OF TETRAHYDROFURAN
    5.
    发明申请
    PROCESS AND SYSTEM FOR PURIFICATION OF TETRAHYDROFURAN 审中-公开
    四氢呋喃的净化方法和系统

    公开(公告)号:US20120215012A1

    公开(公告)日:2012-08-23

    申请号:US13505022

    申请日:2009-10-30

    IPC分类号: C07D307/08 B01D3/14

    CPC分类号: C07D307/08 C07B63/00

    摘要: A method for purifying tetrahydrofuran from a liquid containing tetrahydrofuran and as impurities at least water, 2,5-dihydrofuran and butanol, the method comprising: a first distillation step in which the liquid is subjected to distillation using a distillation column to separate into a first bottoms product containing water as a major component and a first distillate containing tetrahydrofuran, 2,5-dihydrofuran and butanol as major components, a second distillation step in which the first distillate is subjected to distillation using a distillation column to separate into a second bottoms product containing tetrahydrofuran and butanol as major components and a second distillate containing 2,5-dihydrofuran as a major component, a third distillation step in which the second bottoms product is subjected to distillation using a distillation column to separate into a third bottoms product containing butanol as a major component and a third distillate containing tetrahydrofuran as a major component, and further comprising a recirculation step in which a part of the second top liquid is recirculated into the first distillation step as a recirculation liquid and the remaining part is discharged into the outside of the system.

    摘要翻译: 一种从含有四氢呋喃的液体中提取四氢呋喃的方法,至少是水,2,5-二氢呋喃和丁醇作为杂质,该方法包括:第一蒸馏步骤,其中使用蒸馏塔对液体进行蒸馏以分离成第一 含有水作为主要组分的底部产物和含有四氢呋喃,2,5-二氢呋喃和丁醇作为主要组分的第一馏出物,第二蒸馏步骤,其中第一馏出物使用蒸馏塔进行蒸馏以分离成第二塔底产物 含有四氢呋喃和丁醇作为主要组分的第二馏出物和含有2,5-二氢呋喃作为主要组分的第二馏出物,第三蒸馏步骤,其中使用蒸馏塔对第二塔底产物进行蒸馏以分离成含有丁醇的第三底部产物 主要组分和第三馏出物,其中四氢呋喃为主要成分 并且还包括再循环步骤,其中所述第二顶部液体的一部分作为再循环液体再循环到所述第一蒸馏步骤中,并且所述剩余部分被排出到所述系统的外部。

    Polylactide manufacturing apparatus and method for manufacturing polylactide
    6.
    发明授权
    Polylactide manufacturing apparatus and method for manufacturing polylactide 有权
    聚丙交酯制造装置和聚丙交酯的制造方法

    公开(公告)号:US08106150B2

    公开(公告)日:2012-01-31

    申请号:US12453912

    申请日:2009-05-27

    IPC分类号: C08G63/08 B01D53/78 B01J19/18

    摘要: In a process of manufacturing polylactide, synthesis of high-quality polymers is achieved with a sufficient degree of vacuum secured. Provided is an apparatus for manufacturing polylactide which includes the steps of preparing lactide through oligomerization of lactic acid and depolymerization of the resulting oligomers, effecting ring-opening polymerization of the lactide, and removing unreacted lactide. The apparatus comprises an exhausting gas treatment device for reducing pressure in the step of removing unreacted lactide. The exhausting gas treatment device includes boilers (81-83) for generating water vapor; a pressure-reducing section having stages each including an ejector (71-73) driven with the water vapor, a condenser (61-63) connected downstream of the ejector, and a hot well tank (41-43) connected to the condenser; and a main condenser 60 and a main hot well tank 40 connected to the main condenser that are disposed on a pipe line through which a gas of the unreacted lactide is suctioned into the pressure-reducing section. The gas of the unreacted lactide is washed away in the main condenser using a liquid containing lactic acid as a main component that has been collected in the main hot well tank.

    摘要翻译: 在制备聚丙交酯的过程中,通过确保足够的真空度实现高质量聚合物的合成。 提供了一种制备聚丙交酯的装置,包括通过乳酸低聚制备丙交酯并使所得低聚物解聚,进行丙交酯的开环聚合和除去未反应的丙交酯的步骤。 该装置包括用于在去除未反应的丙交酯的步骤中降低压力的排气处理装置。 排气处理装置包括用于产生水蒸汽的锅炉(81-83) 减压部,其具有各自包括由水蒸气驱动的喷射器(71-73)的台阶,连接在喷射器下游的冷凝器(61-63)和连接到冷凝器的热井箱(41-43); 以及主冷凝器60和连接到主冷凝器的主热水箱40,所述主冷凝器60设置在管道上,未反应的丙交酯的气体被吸入减压部。 未反应的丙交酯的气体在主冷凝器中使用含有乳酸作为主要成分的液体在主要热水槽中被收集。

    Device and method for producing polybutylene succinate
    7.
    发明授权
    Device and method for producing polybutylene succinate 有权
    聚丁二酸丁二醇酯的制备方法

    公开(公告)号:US08604156B2

    公开(公告)日:2013-12-10

    申请号:US13503078

    申请日:2010-10-21

    IPC分类号: C08G63/02

    摘要: A device and a method for producing high-quality polybutylene succinate are provided. The method for producing polybutylene succinate comprises the steps of: preparing a raw-material slurry by mixing succinic acid or a derivative thereof with 1,4-butanediol in a raw-material slurry preparation tank; storing the raw-material slurry in a raw-material slurry storage tank while maintaining flowability; carrying out an esterification reaction of the raw-material slurry in an esterification reactor; and synthesizing polybutylene succinate with a polycondensation reaction of the ester in a polycondensation reactor, in which the polycondensation reactor is divided, from the upstream side, into at least an initial polycondensation reactor, an intermediate polycondensation reactor, and a final polycondensation reactor, a catalyst is added in an amount from 1000 ppm to 3000 ppm in relation to succinic acid or a derivative thereof, the reaction time in the intermediate polycondensation reactor ranges from 0.25 hours to 0.75 hours, and the reaction temperature in the final polycondensation reactor ranges from 245° C. to 255° C.

    摘要翻译: 提供了一种用于生产高品质聚丁二酸丁二醇酯的装置和方法。 聚丁二酸丁二醇酯的制造方法包括以下步骤:通过在原料浆料制备槽中混合琥珀酸或其衍生物与1,4-丁二醇来制备原料浆料; 将原料浆料储存在原料浆料储罐中同时保持流动性; 在酯化反应器中进行原料浆料的酯化反应; 并将聚缩丁醛琥珀酸酯与缩聚反应器中的缩聚反应器在上游侧分离成至少初始缩聚反应器,中间缩聚反应器和最终缩聚反应器中的催化剂进行缩聚反应, 相对于琥珀酸或其衍生物以1000ppm至3000ppm的量加入,中间缩聚反应器中的反应时间为0.25小时至0.75小时,最终缩聚反应器中的反应温度为245℃ C.至255°C

    PRODUCTION METHOD AND APPARATUS FOR POLYTRIMETHYLENE TEREPHTHALATE
    8.
    发明申请
    PRODUCTION METHOD AND APPARATUS FOR POLYTRIMETHYLENE TEREPHTHALATE 审中-公开
    聚对苯二甲酸十二烷酸的生产方法和装置

    公开(公告)号:US20110269934A1

    公开(公告)日:2011-11-03

    申请号:US13094929

    申请日:2011-04-27

    IPC分类号: C08G63/80 B01J19/18

    摘要: An object of the present invention is to provide a reasonable polycondensation step by which an appropriate molecular weight can be obtained and material decomposition associated with thermolysis can be suppressed, so as to contribute to production technology for PTT polymers. The production method for polytrimethylene terephthalate comprises an esterification step and a polycondensation step, wherein the polycondensation step is divided into multiple stages, polycondensation is performed using a polymerization vessel having a twin-shaft agitator in the final stage of the polycondensation step, and the polymerization temperature during the subsequent stage of the polycondensation step is less than the polymerization temperature during the former stage of the polycondensation step.

    摘要翻译: 本发明的目的是提供合理的缩聚步骤,通过该步骤可以获得适当的分子量,并且可以抑制与热解相关的材料分解,从而有助于PTT聚合物的生产技术。 聚对苯二甲酸丙二酯的制备方法包括酯化步骤和缩聚步骤,其中缩聚步骤分成多个阶段,在缩聚步骤的最后阶段中使用具有双轴搅拌器的聚合容器进行缩聚,并且聚合 在缩聚步骤的后续阶段期间的温度低于缩聚步骤的前一阶段期间的聚合温度。

    Process for synthesis of acrolein
    9.
    发明授权
    Process for synthesis of acrolein 失效
    合成丙烯醛的方法

    公开(公告)号:US08742178B2

    公开(公告)日:2014-06-03

    申请号:US13577680

    申请日:2010-02-09

    IPC分类号: C07C45/00

    摘要: An object of the present invention is to provide a technology which can suppress the blockage and abrasion of pipes and devices caused by the production of by-products and stably synthesize acrolein at a high yield, under a condition in which energy efficiency is improved by an elevated concentration of glycerol in a reaction liquid, in a process for synthesis of acrolein by reacting supercritical water and an acid with glycerol. An embodiment of the present invention includes: setting a concentration of glycerol in the reaction liquid at 30% by weight or lower; also cooling the reaction liquid to a temperature between a temperature (300° C. or lower) at which the reaction stops and a temperature (100° C. or higher) at which tar contained in the reaction liquid can keep a state in which its viscosity is sufficiently low; then separating and removing carbon particles from the reaction liquid; subsequently cooling the reaction liquid to a temperature which is a boiling point of water or lower and at which the tar component in the reaction liquid does not adhere to devices; and then decompressing the cooled reaction liquid.

    摘要翻译: 本发明的目的是提供一种能够抑制副产物生成引起的管道和装置的堵塞和磨损的技术,并且在能够提高能量效率的条件下以高产率稳定地合成丙烯醛 在超临界水和酸与甘油反应合成丙烯醛的方法中,反应液中甘油浓度升高。 本发明的一个实施方案包括:将反应液中甘油的浓度设定为30重量%以下; 还将反应液体冷却至反应停止的温度(300℃以下)和反应液中所含的焦油的温度(100℃以上)可以保持其状态 粘度足够低; 然后从反应液中分离除去碳颗粒; 随后将反应液体冷却至沸点低于水的温度,反应液中的焦油成分不附着在装置上; 然后减压冷却的反应液。

    Method for synthesizing acrolein
    10.
    发明授权
    Method for synthesizing acrolein 失效
    丙烯醛合成方法

    公开(公告)号:US08450531B2

    公开(公告)日:2013-05-28

    申请号:US12979459

    申请日:2010-12-28

    IPC分类号: C07C45/64 C07D307/46 C07H1/00

    摘要: An object of the present invention is to provide a method for commercially manufacturing acrolein in a large flow rate by making supercritical water and an acid interact with glycerin, wherein by efficiently mixing high-concentration glycerin and supercritical water with each other, the method is made capable of making the synthesis stably proceed with a high yield while the occlusion and abrasion of the pipes and devices due to the generation of by-products are being suppressed. The method for synthesizing acrolein of the present invention is a method for synthesizing acrolein by making supercritical water and an acid interact with glycerin, the method using a reaction apparatus including: a cylindrical mixing flow path for mixing a fluid including glycerin and a fluid including supercritical water with each other; a first inlet flow path, disposed offset from the central axis of the mixing flow path, for making the fluid including glycerin flow into the mixing flow path; and a second inlet flow path, disposed offset from the central axis of the mixing flow path, for making the fluid including supercritical water flow into the mixing flow path, wherein the first inlet flow path and the second inlet flow path are each provided in a plurality of numbers in such a way that the first inlet flow paths and the second inlet flow paths are alternately arranged so as to encircle the central axis of the mixing flow path.

    摘要翻译: 本发明的目的是提供一种通过使超临界水和酸与甘油相互作用而大量流动丙烯醛的方法,其中通过将高浓度甘油和超临界水相互有效地混合,制备方法 能够以高产率稳定地进行合成,同时由于副产物的产生而引起的管道和装置的堵塞和磨损被抑制。 本发明的丙烯醛的合成方法是通过使超临界水和酸与甘油相互作用来合成丙烯醛的方法,使用反应装置的方法包括:将含有甘油的液体和包含超临界流体的流体混合的圆筒状混合流路 水相互; 第一入口流动路径,设置为偏离混合流动路径的中心轴线,用于使包含甘油的流体流入混合流动路径; 以及第二入口流动路径,其设置成偏离混合流动路径的中心轴线,用于使包括超临界水流的流体流入混合流动路径,其中第一入口流动路径和第二入口流动路径分别设置在 多个数字,使得第一入口流动路径和第二入口流动路径交替地布置成环绕混合流动路径的中心轴线。