利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

41 条记录 (耗时 0.016 秒)

    Method for Producing Polyoxymethylene Dimethyl Ethers
    32.
    发明申请
    Method for Producing Polyoxymethylene Dimethyl Ethers 有权
    生产聚甲醛二甲醚的方法

    公开(公告)号：US20150291722A1

    公开(公告)日：2015-10-15

    申请号：US14601787

    申请日：2015-01-21

    申请人： Shandong Yuhuang Chemical Co., Ltd. ,  Tsinghua University

    发明人： Jinfu Wang ,  Yanyan Zheng ,  Shengwei Wang ,  Tiefeng Wang ,  Shuangxi Chen ,  Confu Zhu

    IPC分类号： C08G16/02 ,  C07C41/36 ,  C07C41/09

    CPC分类号： C08G16/0225 ,  C07C41/01 ,  C07C41/09 ,  C07C41/14 ,  C07C41/36 ,  C07C41/56 ,  C07C41/58 ,  C08G2/34 ,  C07C43/30

    摘要： A method for producing polyoxymethylene dimethyl ethers using fluidized bed reactor is provided. The fluidized bed reactor gives high conversion of feedstock during synthesis of polyoxymethylene dimethyl ethers. The product separation process includes pre-rectification, extractive rectification and vacuum rectification in series. In the pre-rectification process, the side-draw fraction PODE2 is recycled into the fluidized bed reactor, thus product distribution and selectivity to target components in the reactor can be improved. The extractive rectification process realizes coupling of neutralization, extraction, recovery of unconverted feedstock and products separation, thus significantly simplifies the process. The method for preparation of polyoxymethylene dimethyl ethers in this invention is simple, and has high conversion of feedstock, low energy cost and high selectivity to products.

    摘要翻译： 提供了使用流化床反应器生产聚甲醛二甲醚的方法。 流化床反应器在合成聚甲醛二甲醚期间提供原料的高转化率。 产品分离过程包括预整流，萃取精馏和真空整流。 在预精馏过程中，侧馏分PODE2被再循环到流化床反应器中，从而可以提高反应器中对目标组分的产物分布和选择性。 萃取精馏过程实现中和，提取，未转化原料的回收和产物分离的偶联，从而显着简化了工艺。 本发明的聚甲醛二甲醚的制备方法简单，原料转化率高，能量成本低，产品选择性高。

    METHOD FOR REFINING POLYOXYMETHYLENE DIALKYL ETHERS BY CATALYTIC HYDROGENATION USING A SLURRY BED
    33.
    发明申请
    METHOD FOR REFINING POLYOXYMETHYLENE DIALKYL ETHERS BY CATALYTIC HYDROGENATION USING A SLURRY BED 有权
    通过使用浆料床的催化加氢精制聚羟基乙烯二醇的方法

    公开(公告)号：US20140364652A1

    公开(公告)日：2014-12-11

    申请号：US14257215

    申请日：2014-04-21

    申请人： Dongfang Hongsheng New Energy Application Technology Research Institute Co., Ltd.

    发明人： Zhengpeng HONG ,  Hongyan SHANG ,  Xiaoting FENG

    IPC分类号： C10L1/02

    CPC分类号： C10L1/02 ,  C07C29/141 ,  C07C41/56 ,  C08G2/28 ,  C08G2/34 ,  C08L59/02 ,  C07C43/303 ,  C07C31/04

    摘要： The present invention relates to a method for refining polyoxymethylene dialkyl ethers by catalytic hydrogenation using a slurry bed, wherein, using a slurry bed reactor of refining by hydrogenation, an equilibrium system of products containing polyoxymethylene dialkyl ethers is refined by catalytic hydrogenation, so as to remove formaldehyde contained therein. The refining method by hydrogenation described in the present invention is able to remarkably increase the extracting rate of polyoxymethylene dialkyl ethers, and the polyoxymethylene dialkyl ethers obtained after subsequent rectification have purity greater than 99.5%, yield greater than 97% and atom utilization ratio close to 100%.

    摘要翻译： 本发明涉及一种通过使用淤浆床的催化氢化来精制聚甲醛二烷基醚的方法，其中使用通过氢化精制的淤浆床反应器，通过催化氢化精制含有聚甲醛二烷基醚的产物的平衡体系，以便 除去其中所含的甲醛。 通过本发明所述的氢化精炼方法能够显着提高聚甲醛二烷基醚的萃取率，后续精馏后得到的聚甲醛二烷基醚的纯度大于99.5％，收率大于97％，原子利用率接近 100％。