一种酯化反应釜
    72.
    发明公开

    公开(公告)号:CN104437308A

    公开(公告)日:2015-03-25

    申请号:CN201410654134.5

    申请日:2014-11-17

    Applicant: 刘超

    Inventor: 刘超

    Abstract: 本发明公开了一种酯化反应釜,包括釜体和釜盖,所述的釜体包括内胆和外罐体,所述的釜盖处设置有不锈钢热电阻探头,所述的釜体内设置有搅拌轴,搅拌轴连接电机,所述的釜体两侧设置有入料口,所述釜体的上部设置有出料口,所述内胆和外罐体之间设置有夹套加热冷却一体机,其特征在于,在釜体的出料口处还设置一个碱石灰除水装置。精馏塔结构简单,设计科学合理,运行成本低,保养维修较方便。

    Method for Preparing Polyvinyl Chloride by Suspension and Polymerization, and Feeding Device

    公开(公告)号:US20170349680A1

    公开(公告)日:2017-12-07

    申请号:US15533605

    申请日:2015-02-11

    Abstract: The present invention provides a production method of polyvinyl chloride by suspension polymerization and a feeding apparatus. This method comprises: Step 1: injecting a vinyl chloride monomer and water at 25-98° C. into a reaction vessel to obtain a water suspension, closing the reaction kettle, repeatedly and cyclically performing vacuum-pumping and cleansing with nitrogen, stirring and evacuating oxygen in the reaction kettle; Step 2: adding a first suspension agent and a second suspension agent into the reaction kettle, and then adding a nanopowder and an initiator composite, to carry out the polymerization reaction; Step 3: adding cold water to terminate the polymerization reaction upon the pressure in the reaction kettle is reduced to 3.5 bar or less; Step 4: evacuating and vacuumizing the reaction kettle, and then filtering, washing and drying the resulted polymer, to obtain polyvinyl chloride. The present invention also provides a feeding apparatus used for the above production method. Polyvinyl chloride produced by the method of this invention has good performance and can meet the requirements of physical and chemical properties and applicability for most applications.

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