Green method for separating plant monophenol glycidol ether and recycling industrial salt

Green method for separating plant monophenol glycidol ether and recycling industrial salt

  • CN 104,130,217 A
  • Filed: 07/18/2014
  • Published: 11/05/2014
  • Est. Priority Date: 07/18/2014
  • Status: Active Application
First Claim
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1. a method for the single phenol glycidyl ether of green separation plant and recovery Industrial Salt, is characterized in that, step is as follows:

  • (1) take the single phenol of plant and propylene oxide is raw material, and the mass ratio of the single phenol of plant and epoxy chloropropane is 1;

    0.5~

    2, adds solvent, under the protection of rare gas element, open loop addition etherification reaction occurs under catalyzer quaternary ammonium salt, and the reaction times is 0.5~

    2h;

    Then adding mass concentration is 30%~

    60% sodium hydroxide solution, carry out first closed loop epoxidation dechlorination reaction, the temperature of reaction of first closed loop epoxidation dechlorination reaction is 50~

    80 ℃

    , and the reaction times is 0.5~

    3h, and the mass ratio of the single phenol of consumption and plant is 0.2~

    0.5;

    1;

    Underpressure distillation is for the first time isolated after solvent and excessive epoxy chloropropane, adding mass concentration is that 10%~

    30% sodium hydroxide solution carries out second closed loop epoxidation dechlorination reaction again, the temperature of second closed loop epoxidation dechlorination reaction is 60~

    90 ℃

    , reaction times is 1~

    5h, and the mass ratio of the single phenol of consumption and plant is 0.1~

    0.4;

    1.(2) underpressure distillation is for the second time isolated after solvent and excessive epoxy chloropropane more than standing 2h, and carries out separatory for the first time with separating funnel, isolates the aqueous solution on lower floor'"'"'s epoxy chloropropane and upper strata;

    After underpressure distillation, remaining cut obtains the single phenol glycidyl ether crude product of plant and salts solution by centrifuging for the second time;

    The single phenol glycidyl ether of plant crude product through washing, separatory, distillation, after multi-layer filter paper filters the single phenol glycidyl ether of plant finished product;

    The salts solution that centrifuging obtains is used industrial alcohols to wash away after cull, through whizzer, dries and can obtain Industrial Salt.

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