The solubility of potassium lauryl sulfate in water is small, the solubility of sodium lauryl sulfate in water is high, and the solubility of sodium lauryl sulfate in hot water is higher. It is commonly dissolved in sodium lauryl sulfate. Potassium dodecyl sulfate is prepared by mixing with potassium ions in water, but the preparation rate is low, and a raw material pretreatment device for potassium dodecyl sulfate production is urgently needed to increase the preparation rate of potassium dodecyl sulfate, thereby Meet the needs of people in production and life.