Diluted hydrochloric acid concentration equipment (23% -31%)

This process uses negative pressure evaporation+salt desorption for concentration. The evaporation desorption process is based on the theory of salt effect, adopting the method of adding salt evaporation desorption. Inorganic salts are added to the dilute hydrochloric acid solution that needs to be evaporated to change the relative volatility of the components and disrupt the constant boiling composition of hydrochloric acid and water.

Diluted sulfuric acid concentration equipment

The waste sulfuric acid first enters the filtration system to remove impurities. After impurity removal, the dilute sulfuric acid enters the gas-liquid separator from the metering tank. After reaching a certain capacity, it enters the evaporator for steam heating. The gas evaporated through gas-liquid separation in the separator is condensed through the condenser and then enters the weak acid water collection tank. Due to the vacuum effect, it can prevent the material from adhering to the inner wall of the heating tube. After the waste sulfuric acid reaches the required concentration through evaporation, it is collected and enters the automatic acid preparation system. After concentration adjustment, it is prepared to the required concentration and reused for production.

Diluted nitric acid concentration equipment (68%)

This treatment system mainly uses a heat source to heat the waste nitric acid liquid through a special material heat exchanger. Under negative pressure, the water is evaporated and separated by an efficient concentration tower. After passing through the packing layer, it enters the vacuum condenser and condenses into weakly acidic water (COD ≤ 300, PH5-6), which is collected and reused in the collection tank or enters the sewage treatment station. The concentrated liquid is>68% nitric acid. If the waste nitric acid contains other impurities, this concentrated solution enters the extraction system and continues to evaporate to extract ≥ 66% nitric acid, with a small amount of residue and impurities collected and processed.