Manufacturing and purification process and apparatus of epichlorohydrin

    公开(公告)号:JP2011513311A

    公开(公告)日:2011-04-28

    申请号:JP2010548757

    申请日:2009-01-22

    CPC classification number: C07D301/12 C07D301/32

    Abstract: A process and apparatus are disclosed for the purification of epichlorohydrin. The process includes distilling and/or fractionating a feed stream containing epichlorohydrin, dichlorohydrin(s), and one or more other substances, subjecting at least a portion of the liquid phase effluent to a dichlorohydrin dehydrochlorination process for converting residual dichlorohydrin(s) in the liquid phase effluent to epichlorohydrin, and recovering purified epichlorohydrin from the vapor phase effluent in which the distillation/fractionation pressure and/or temperature of step (1) is adjusted to retain at least 5 weight-percent epichlorohydrin in the liquid phase effluent and/or the distillation/-fractionation pressure and/or temperature of step (1) is adjusted to satisfy the equation: R –¡ 100000 –¡ P 100 –¡ T k wherein P represents the distillation pressure of the vapor phase effluent produced by step (1) in Pascal, T k represents the distillation temperature of the liquid phase effluent produced by step (1) in degrees Kelvin, and R represents the number 2.8. The apparatus for making purified epichlorohydrin includes a dehydrochlorination apparatus, a first liquid-vapor contacting apparatus, and a second liquid-vapor contacting apparatus connected to the dehydrochlorination apparatus for recycling a distillate to the dehydrochlorination apparatus. Advantages include more efficient recovery of epichlorohydrins and reduced capital investment in recovery equipment.

    Method for gas-phase polymerization

    公开(公告)号:JP2011516241T

    公开(公告)日:2011-05-26

    申请号:JP2010544429T

    申请日:2009-01-23

    Abstract: 開口端を有する外管と、外管開口端と連結している直径を有するノズルチップと、ノズルチップの内側に連結し、外管に連結しているオリフィスと、オリフィスの内部に連結し、外管に連結している内部混合ゾーンと、内部混合ゾーンに連結している開口端をさらに含んでいる外管内に在る内管と、を含む触媒噴射ノズルであって、霧化用ガスと少なくとも1つの液体触媒フィードとの間の定常状態の均一な2相の流動様式が、内部混合ゾーン内で、霧化用ガス対液体触媒フィードの約0.05から約10までの流量比では生じない触媒噴射ノズルが開示されている。

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