| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hydrolysis method for monochlorobenzene excellent in terms of energy saving, effectively utilizing the heat of the hydrolysis reaction mixture. <P>SOLUTION: This method comprising a material vaporizing process of vaporizing a hydrolysis material liquid containing monochlorobenzene and water by heating, for obtaining hydrolysis material gas, a hydrolysis reaction process of providing the hydrolysis material gas to hydrolysis reaction for converting the monochlorobenzene at least partially to phenol and hydrogen chloride for obtaining a hydrolysis reaction mixture including phenol, monochlorobenzene, water and hydrogen chloride, and a distillation separation process of supplying the hydrolysis reaction mixture to a distillation column for obtaining a liquid rich in phenol from the bottom of the column, utilizes at least partially the heat obtained by condensing gas obtained from the top of the distillation column in the distillation separating process as the heat source for vaporizing hydrolysis material liquid in the material vaporizing step. <P>COPYRIGHT: (C)2008,JPO&INPIT |
