The refined hydrogen chloride gas has a wide range of uses because of little impurity (especially organic matter). The following is a brief description of its utilization.

● Production of hydrochloric acid

The refined HCl gas (in a packed column or membrane absorption column) can be absorbed with water to produce industrial grade hydrochloric acid, which is the method used by most enterprises. These hydrochloric acids can be used for metal cleaning, acidification of oil Wells, hydrometallurgy (such as the treatment of clay, kaolin or carbon shale to produce alumina, instead of sulfuric acid to process ilmenite to produce titanium dioxide, hydrometallurgy to produce precious metal chloride, etc.), instead of sulfuric acid to react with sodium chlorate to produce chlorine dioxide, acidification of phosphate to produce fertilizer grade phosphate fertilizer, the manufacturing of inorganic substances (such as

Nanpiao Mining Bureau of Liaoning Province uses hydrochloric acid to treat coal gangue to produce crystalline aluminum chloride and polyaluminum chloride water treatment agent, which are 10,000 t/a for crystalline aluminum chloride and 50,000 t/a for industrial hydrochloric acid consumption respectively), organic matter synthesis (such as aromatic acid esterification), etc. In addition, hydrochloric acid can be produced by heating - desorption - condensation - filtration - adsorption to obtain high yield, high purity of hydrogen chloride, so that its use is more extensive.

● Production of high purity HCl gas

The by-product of refined hydrogen chloride gas can be used to produce high purity HCl gas by absorption - desorption - condensation - filtration - adsorption process. This high purity hydrogen chloride gas is used as follows:

● PVC production

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

● NH 4 Cl production

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

● Metal chloride production

At a temperature of 700 ℃ and in the presence of phosgene and NiCl 2, silicon tetrachloride can be prepared by the reaction of carbon silicon and hydrogen chloride. Mo, Nb, Ta, Ti, Zr, Hf, Cr, W and other metal chlorides can also be prepared by the reaction of corresponding metal nitride and hydrogen chloride.

● Chlorinated hydrocarbon production

Hydrogen chloride and olefins, alkanes compounds can be added to produce chlorocarbons. For example, at 35 ~ 40 ℃, hydrogen chloride and ethane react in liquid phase to produce chloroethane. The industrial production of 1, 1-dichloroethane and 1,1, 1-trichloroethane is produced using chloroethane and hydrogen chloride as raw materials.

● Organic synthesis

In the synthesis of organic matter, hydrogen chloride can be used directly as a chlorinating agent, such as various alkyl chlorides can be prepared by chlorinating the corresponding alcohol with hydrogen chloride.

● Other applications

HCl-H 2 mixture can be used for heavy oil desulfurization. High temperature dissociation of HCl has been applied to chemical plasma reactions, through which various C 1, C 2 chlorocarbons and chlorocarbons can be synthesized from carbon and hydrogen chloride.

By changing the conditions, 1, 1, 2-trichloroethane, 1, 2-dichloroethane, trichloroethylene and tetrachloroethylene can become the main products.

Company Profile

Founded in 2013, Zibo Dijia Special Gas Co., Ltd ,based on more than thirty years of research and production of hydrogen chloride gas, Dijia as the window to actively explore new markets and integration of special gas resources for domestic and foreign customers. Zibo Dijia has full range of gases, including Industrial gases,specialty gases,electronic gases, high purity gases, mixed gases, electric lighting gases, ultra-pure gases, laser gases, medical gases, calibration gases, a total of ten series of more than 100 varieties, with strong market competitiveness.