Acid Regeneration Plant (ARP)

The Acid Regeneration Plant (ARP) is a cutting-edge environmental solution in metal surface treatment and metallurgical industries, designed to recover and recycle spent pickling acids (e.g., HCl, H₂SO₄, HNO₃) generated from processes such as cold rolling, hot-dip galvanizing, and electroplating. Utilizing advanced technologies like Spray Roasting, Evaporation-Crystallization, or Membrane Separation, the system efficiently separates free acids from metal salts (FeCl₂, ZnSO₄, etc.), restoring acid concentration to 18%-22% while producing high-purity metal oxides (Fe₂O₃, ZnO) as industrial raw materials, achieving a closed-loop cycle of "acid-metal-water".

Integrated with Heat Recovery, Automated DCS/PLC Control, and Exhaust Gas Scrubbing, the ARP achieves acid recovery rates ≥99%, reduces acid consumption costs by over 80%, and eliminates neutralization sludge and acidic wastewater discharge, fully complying with ISO 14001 and zero-waste regulations. It serves steel, stainless steel, copper processing, and new energy battery material industries, driving the transition towards green and low-carbon metallurgical production.

Typical Achievements

Sichuan Longwei Steel 2.5m³/h Waste Acid Regeneration By Evaporation Method

Fujian Kaixi 3.5m³/h Waste Acid Regeneration By Roasting Method 

Shandong Hualu3.5m³/h Waste Acid Regeneration By Roasting Method

Sichuan Kaixi 4m³/h Waste Acid Regeneration By Roasting Method