| 摘要 |
Methods for continuously producing 2,3-dichloro-1-propanol (2,3-DCH) and epichlorohydrin in high yields and in a stabel manner for a long time are disclosed. In a method where allyl alcohol is chorinated in a hyrochloric acid solution and the reaction solution is introduced into a degassing tower to release hydrogen chloride and 2,3-DCH is obtained from the remaining solution, the concentraton of chlorine in the reaction mixture to be introduced into the degassing tower is maintaining to 0.015 g/ml or less and/or the partial pressure of chlorine gas in the reactor immediately before the degassing tower to 0.08 MPa or less, by monitoring and/or the partial pressure of chlorine gas in the reactor immediately before the degassing tower to 0.08 MPa or less, by monitoring and/or controlling the chlorine concentration of a solution at the outlet of the reactor immediately before the degassing tower and/or the partial pressure of chlorine gas present in the gas phase section of the reactor and the flow rate of chlorine gas immediately before the degassing tower. |
