1,1,2-trichloroethane reactor and method thereof

Abstract

The invention discloses a 1,1,2-trichloroethane reactor, which comprises a vertically installed cylinder body, wherein the cylinder body comprises a lower sealing head, a first cylinder body, a secondcylinder body, a third cylinder body, a fourth cylinder body and an upper sealing head which are sequentially connected from bottom to top, the bottom of the lower sealing head is provided with a circulating liquid inlet, a vinyl chloride distributor is arranged in the first cylinder body, the first cylinder body is provided with a vinyl chloride inlet, and the vinyl chloride inlet is connected with the vinyl chloride distributor. A chlorine distributor is arranged in the second cylinder body, a chlorine inlet is arranged on the second cylinder body, the chlorine inlet is connected with the chlorine distributor, a lower temperature measuring port and a middle temperature measuring port are arranged on the third cylinder body, a grid plate is arranged between the third cylinder body and the fourth cylinder body, a circulating liquid outlet, an overflow port and an upper temperature measuring port are arranged on the fourth cylinder body, and an exhaust port is arranged on the top of the upper sealing head. The invention also discloses a method for producing 1,1,2-trichloroethane by using the reactor. The1,1,2-trichloroethane reactor has the advantages of simple structure, large operation elasticity, good gas-liquid mass transfer effect and safe and controllable reaction process.

Description

technical field [0001] The invention relates to chlorinated alkanes, in particular to a 1,1,2-trichloroethane reactor and a method thereof. Background technique [0002] 1,1,2-Trichloroethane is a colorless, transparent, volatile liquid with a special sweet smell, nonflammable, insoluble in water, and miscible with alcohols, ethers, esters, and ketones. 1,1,2-Trichloroethane is an important organic intermediate, which can be used as a raw material for the production of vinylidene chloride (VDC); 1,1,2-Trichloroethane is also a good organic solvent , can be used as a solvent for oil, wax, rubber, cellulose acetate, etc., an extractant for dyes and spices, etc. [0003] The methods for industrial production of 1,1,2-trichloroethane mainly include vinyl chloride (VCM) chlorination and dichloroethane (EDC) chlorination. The VCM chlorination method has mild conditions, mature technology and strong competitiveness. The method is to react vinyl chloride and chlorine gas, and obt...

AI Technical Summary

Problems solved by technology

The disadvantages are high energy consumption, many product by-products, poor product selectivity, a huge post-processing system is required to obtain higher purity products, and equipment investment is large

The disadvantages are high energy consumption, many product by-products, poor product selectivity, and a huge alkali cleaning system is required

The disadvantage is that the mixing injection device and the main pipeline reactor equipped with static mixing components need to be used in the chlorination reaction process. These devices are relatively complex in structure, occupy a large space, have low product purity, many by-products, poor product selectivity, and high production costs.

The disadvantage is that the gas-liquid mass transfer and heat transfer effect of the preparation device is poor, which will easily cause the ratio of chlorine and vinyl chloride to be out of control, the temperature distribution will be uneven, the amount of by-product polychlorides will increase, and the reaction selectivity and yield will decrease.

The disadvantage is that each tower section in the chlorination tower is not conducive to the control of reaction heat and product recovery, the reaction selectivity is poor, and the yield is low

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