Method for preparing chlorohydrins and method for preparing epichlorohydrin using chlorohydrins prepared thereby

A method of preparing chlorohydrins by reacting polyhydroxy aliphatic hydrocarbon with a chlorination agent in the presence of a catalyst, the method comprising at least one combination of a series of unit operations comprising a plurality of reaction steps and a water removal step in the following stated order:

• a first reaction step of reacting the polyhydroxy aliphatic hydrocarbon with the chlorination agent;
• a water removal step of removing water as a by-product from a reaction mixture discharged from the first reaction step;
• and
• a second reaction step of reacting at least one constituent of the dehydrated reaction mixture with at least one of the chlorination agent and an additional chlorination agent,
• wherein the method further comprises purifying a reaction mixture discharged from a final reaction step of the plurality of reaction steps to obtain a concentrate of chlorohydrins.