Process principle:
Using the characteristics of concentrated hydrochloric acid volatile, heated the hydrochloric acid part will dissolve in the water hydrogen desorption.
Process description:
Concentrated hydrochloric acid after preheating went into the tower, the tower layer by the exchange of mass and heat transfer, the purity of 99% or more separate hydrogen chloride gas from the top of the tower, cooling and low temperature drops to mist eliminator to remove acid, hydrogen chloride gas to use process. Bottom discharge azeotropic acid reflux to dilute hydrochloric acid storage tank after cooling to room temperature. Desorption heat provided by the bottom reboiler is continuous.
Technical features:
1. DCS automatic control, safety interlock control system is reliable and efficient;
2. High quality of hydrogen chloride, delivery pressure 0.05 to 0.3 MpaG (adjustable).
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