The anode protection acid cooler is a specialized shell-and-tube heat exchanger engineered for cooling high-temperature, high-concentration corrosive acid media. Primarily utilized in sulfuric acid, phosphoric acid, and other chemical industrial processes, this advanced equipment integrates electrochemical anodic protection technology to solve severe corrosion challenges in strong acid environments.
Working Principle
The system operates through controlled anodic polarization. A stable external electric potential is applied to the stainless steel surface in contact with acid medium, pushing the metal into a stable passive state. This process forms a dense, anti-corrosive passivation film that effectively isolates the metal matrix from corrosive acids.
This technology reduces the annual corrosion rate to 0.01-0.03mm—significantly lower than unprotected equipment—while cooling water circulates inside the tube bundle to conduct efficient heat exchange.
Structural Design
The equipment features a fully welded compact structure with acid flowing on the shell side and cooling water on the tube side. Precision monitoring and control electrodes enable real-time adjustment of polarization parameters to ensure stable, reliable protection under variable temperature and concentration conditions.
Fully welded compact construction
Precision monitoring and control electrodes
High heat exchange efficiency
Minimal floor space requirements
Stable operational performance
Industrial Applications
Widely deployed in sulfuric acid drying, absorption, and purification sections, this cooler overcomes the limitations of traditional cast iron and ordinary stainless steel coolers. It significantly extends equipment service life while reducing downtime, maintenance costs, and improving acid product purity.
With outstanding anti-corrosion performance and stable heat exchange capacity, the anode protected sulfuric acid cooler has become an essential, energy-saving, and durable solution for modern acid chemical enterprises.