Prepn. method and apparatus of trichloromethy chloroformate

A technology of trichloromethyl chloroformate and methyl chloroformate, which is applied in the field of preparation and equipment of trichloromethyl chloroformate, can solve problems such as danger, and achieve the effects of fast reaction speed, reasonable principle and high reaction temperature

Inactive Publication Date: 2003-01-08
邵益丰
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  • Application Information

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Problems solved by technology

[0002] Phosgene is an important chemical raw material with a wide range of applications, but because it is a highly toxic gas, it is extremely dangerous in the process of production, transportation, storage and use

Method used

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  • Prepn. method and apparatus of trichloromethy chloroformate
  • Prepn. method and apparatus of trichloromethy chloroformate
  • Prepn. method and apparatus of trichloromethy chloroformate

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Embodiment Construction

[0012] An equipment for preparing trichloromethyl chloroformate, which has a primary reactor 4 and a secondary reactor 6, and the primary reactor 4 is provided with a feeding port, a feeding port, a sampling port, a sight glass, and a thermometer , Combining the ultraviolet lamp tube and the glass cooler group 5, the glass cooler group 5 is connected to the secondary reaction kettle 6, a chlorine ventilation device 3 is arranged at the inner bottom of the primary reaction kettle 4, and the chlorine ventilation device 3 has a distributor 31, The upper end of the distributor 31 has a main pipe 32, and the lower end has a branch pipe 33. The main pipe 32 communicates with the liquid chlorine cylinder 1. The liquid chlorine cylinder 1 is installed outside the first-stage reaction kettle 4. The liquid chlorine cylinder 1 communicates with the chlorine ventilation device 3 through the sulfuric acid dryer 2. The upper end of the glass cooler group 5 communicates with the secondary rea...

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PUM

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Abstract

The present invention relates to a preparation method of trichloromethyl chloroformate and its special-purpose equipment. It includes the following steps: placing methyl chlorocarbonate in an enamel reactor still; under the double catalytic action of liught and phosphorus pentachloride and under the conditino of that the reactor still temp. is 50-80 deg.C continuously introducing chlorine gas into the reactor still in speed of 8-15 kg/hr. to make chlorination reaction to produce trichloromethyl chloroformate and hydrogen chloride; reaction time is 48-70 hr., detecting specific weight of material d1(35 deg.C)=1.61-1.62, after the reaction reaches to end point, stopping introduction of chlorine gas, cooling and discharging to obtain the invented finished product trichloromethyl chloroformate whose purity is greater than or equal to 98%.

Description

Technical field [0001] The invention relates to a production method and special equipment for chemical products, in particular to a preparation method and equipment for trichloromethyl chloroformate. Background technique [0002] Phosgene is an important chemical raw material with a wide range of applications, but because it is a highly toxic gas, it is extremely dangerous during production, transportation, storage, and use. Therefore, whether it is in the laboratory or industrial production, the phosgene route should be avoided as much as possible. Liquid phosgene (commonly known as diphosgene) - trichloromethyl chloroformate as a substitute for phosgene, it has obvious safety and environmental protection compared with phosgene in the process of production, transportation, storage and use. Contents of the invention [0003] The purpose of this invention is to provide a kind of preparation method and special-purpose equipment of industrialized production trichloromethyl c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C68/02C07C69/96
Inventor 邵益丰
Owner 邵益丰
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