Hydrochloric Acid Regeneration Plant Design Process Manufacturing

Reference project 2x6.0m3/h Acid Regeneration Plant

Beijing JJRS Technology Development Co., Ltd. registered in national high tech park-Beijing Economic and Technological Development Zone, is high-tech enterprise specialized in the complete set of metallurgical equipments, intensive processing of steel strip and metal surface coating engineering project, with the integration of mechanism, optics, electric and hydraulic pressure.

JJRS is professional on turn-key projects, from general planning, designing, to manufacturing, installing, commissioning and servicing. Besides, our business also covers single equipment’s designing, manufacturing and installing, as well as electric transmission, control system and spare parts. All basing on these supporting businesses, we mark out a developing strategy that taking metal strip intensive processing and color coating production lines as main, and the associated industry products as supplement.

When hot rolled steel strip is pickledby hydrochloric acid, iron and iron oxide on surface of hot-rolled steel strip shall have chemical reaction with hydrochloric acid and then transform into chloride majored by FeCL2 and dissolve into hydrochloric acid solution. Along with acid pickling proceeding, iron ion density in hydrochloric acid solution will go up, while dissociated HCL density will go down. In order to maintain the density of free HCL in the acid solution, remove the iron ion increased, the waste acid pickling solution will be sent to acid regeneration plant to regenerate free acid which shall be returned into acid pickling unit for waste acid reutilization. At the same time, iron oxide powder is obtained.
The acid pickling process is expressed as the following chemical reaction equations.

Fe+2HCL=FeCL2+H2
FeO+2HCL=FeCL2+H2O
Fe2O3+2HCL FeCL2+FeCL3+H2O
Fe2O3+6HCL=2FeCL3+3H2O
2FeCL3+Fe=3FeCL2
4FeCL2B+4HCL+O2=4FeCL3+2H2O