| abstract |
The invention discloses a preparation method of potassium guaiacol sulfonate. The method uses guaiacol as a raw material, and prepares crude potassium guaiacol sulfonate through sulfonation, calcification and potassium reaction. The method of introducing nitrogen gas during sulfonation prevents the oxidation and polymerization of guaiacol, and solves the problem that the hydroxyl group is easily oxidized by the oxidizing property possessed by the sulfonating agent. The solution adopts the heat pump recompression decompression concentration continuous crystallization technology to carry out the decompression concentration continuous crystallization to reduce the temperature of the concentration process and reduce the impurities generated due to the high temperature in the concentration process. The preparation method is simple, time-consuming, and guaiacol sulfonic acid. Potassium has high purity and good yield, and is suitable for industrial mass production. |