● Production of high purity HCl gas

The process of absorption - desorption - condensation - filtration - adsorption can be used to produce high purity HCl gas from by-product hydrogen chloride gas after refining. The uses of this high purity hydrogen chloride gas are as follows:

● PVC production

High purity HCl gas can be used to synthesize vinyl chloride with ethylene, and can also be used to catalyze oxygen chlorination reaction with hydrocarbons, air (or oxygen) to produce chlorinated hydrocarbons. The most important oxygen-chlorination reaction in industry is the production of dichloroethane, the resulting dichloroethane is cracked to produce vinyl chloride and byproduct HCl gas, which can be recycled.

● NH 4 Cl production

Ammonia and HCl can be directly synthesized to produce NH 4 Cl, and phosphorus chloride can also be produced as an intermediate for 4-hydroxymethyl phosphorus chloride.

● Metal chloride production

In the presence of phosgene and NiCl 2, silicon tetrachloride can be prepared by the reaction of carbon silicon and hydrogen chloride at 700 ℃. Chlorides of Mo, Nb, Ta, Ti, Zr, Hf, Cr, W and other metals can also be prepared by the reaction of corresponding metal nitrides with hydrogen chloride.