The invention belongs to the technical field of chemical equipment, and particularly relates to a chlorination
hydrolysis high-pressure reaction method and
system. In order to solve the technical problem of reducing high-content salt in
sewage, the method comprises the following steps: S1, preparing a
methanol aqueous solution by using recycled
methanol,
raw material methanol and water; s2, a
furfuryl alcohol and methanol
mixed solution is prepared, and methanol
mass flow and
furfuryl alcohol mass flow are interlocked; s3, pumping a certain volume of methanol
aqueous solution into the chlorination kettle, and then carrying out circulating cooling; introducing
chlorine and dropwise adding
furfuryl alcohol into the chlorination kettle at the same time, and carrying out chlorination reaction; after the chlorination reaction is finished, feeding liquid in the chlorination kettle to a high-pressure reaction kettle for
distillation; s4, circularly cooling the high-pressure reaction kettle after
distillation is finished, adding caustic soda liquid into the cooled high-pressure reaction kettle, adjusting the pH value to 2.5-3.0, and conveying the neutralized liquid with the adjusted pH value to a preheating kettle; and S5, preheating the neutralized liquid in the preheating kettle, and sublimating the neutralized liquid.