Method for producing epoxy chloropropane
A technology of epichlorohydrin and its production method, which is applied in the direction of organic chemistry, and can solve problems such as explosion hazards, safety hazards, and development hindrances
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Embodiment 1
[0009] Add chloroform, 3-chloropropene, and catalyst to the reactor first, stir and heat up to the reaction temperature, then add hydrogen peroxide at a uniform speed within 1 hour, and the total reaction time is 2 hours. Feed mass ratio, chloroform: chloropropene: 50% (mass ratio) hydrogen peroxide: catalyst is 1: 1: 0.26: 0.08.
[0010] During the reaction process, the highest gas phase oxygen concentration is 1.3%, the conversion rate of allyl chloride is 29.6%, and the selectivity is 97.8%.
Embodiment 2
[0012] Add chloroform, 3-chloropropene, and catalyst to the reactor first, stir and heat up to the reaction temperature, then add hydrogen peroxide at a uniform speed within 30 minutes, and the total reaction time is 1.5 hours. The mass ratio of feed, chloroform: chloropropene: 50% hydrogen peroxide: catalyst is 1:1:0.26:0.08.
[0013] During the reaction process, the highest gas phase oxygen concentration is 3.8%, the conversion rate of allyl chloride is 30.2%, and the selectivity is 98.2%.
[0014] The mass ratio of 50% hydrogen peroxide to 3-chloropropene can be controlled to be 0.21-0.27:1.
[0015] A zirconia-type oxygen analyzer can be used, and the zirconia oxygen sensor is arranged above the gas phase of the reactor to monitor the oxygen concentration in the gas phase of the reactor online.
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Abstract
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