Technologies & Solutions
HCL acid
HCL acid extraction and rectification system
This system is suitable for HCL acid at any concentration. HCL gas is stripping out through adding the extracting agent CaCL2 in HCL acid to break the chemical balance, then the diluted CaCL2 solution flows into the concentration system for recovery and recycling utilization.
If there are impurities in the acid which tend to be reacted with the extractant, we suggest to adopt the differential pressure distillation method for HCL gas recovery.
This system is suitable for any concentration of hydrochloric acid. HCL gas is extracted and distilled by adding extractant CaCL2 into the acid to break the azeotropic partial pressure.
The diluted CaCL2 enters the concentration system and evaporates the acid-containing wastewater. Suitable for relatively clean hydrochloric acid.
HCL gas is produced by the change of azeotropic concentration of hydrochloric acid with pressure, and HCL gas is concentrated under negative pressure and desorbed under positive pressure.
This process is suitable for the working condition where hydrochloric acid contains impurities. But this method requires a larger investment and a higher steam consumption compared with the extraction method.
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