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.