Anodic Protection Shell Tube Sulfuric Acid Cooler CD-AP-60 60m2 316L Tubes for 98 Percent Acid Cooling

The Carpe Diem CD-AP-60 Anodic Protection Shell and Tube Sulfuric Acid Cooler is a precision-engineered heat exchange solution designed for highly corrosive concentrated sulfuric acid cooling applications in chemical processing and metallurgical industries. This compact yet powerful unit delivers a 60 square meter heat exchange area through a meticulously welded 304L stainless steel shell housing a 316L stainless steel tube bundle with tube specification of Φ19×2.0×6000 mm. The anodic protection system actively prevents acid-induced corrosion by maintaining a stable passive film on all wetted metal surfaces, dramatically extending equipment service life and eliminating the safety risks associated with uncontrolled corrosion in sulfuric acid environments. Designed to cool 98 percent sulfuric acid from an inlet temperature of 76.5°C down to 40°C at a flow rate of 20,770 kilograms per hour, this cooler achieves exceptional thermal efficiency while operating entirely within safe electrochemical parameters. Every unit undergoes rigorous hydrostatic testing and electrochemical potential verification prior to dispatch, ensuring reliable performance from the very first day of operation.

• Anodic Protection Technology: The integrated anodic protection system applies a controlled anodic potential to all acid-wetted surfaces, forming and maintaining a stable passive oxide film that prevents active corrosion even in highly aggressive 98 percent sulfuric acid environments. This electrochemical protection method eliminates the need for expensive exotic alloy construction while delivering equivalent corrosion resistance.
• Dual-Grade Stainless Steel Construction: The shell is fabricated from 304L stainless steel for structural durability and external corrosion resistance, while the tube bundle utilizes 316L stainless steel with enhanced molybdenum content to withstand the extreme corrosive conditions on the acid side. This optimized material pairing balances cost-effectiveness with maximum performance where it matters most.
• Optimized Counter Flow Design: The shell and tube configuration employs a counter flow arrangement that maximizes the logarithmic mean temperature difference between the hot sulfuric acid and cooling water streams. This design achieves superior heat transfer rates and minimizes the required heat exchange surface area compared to parallel flow alternatives.
• Expanded Joint Tube Sealing: Each tube is mechanically expanded into the tube sheet using precision rolling equipment, creating a leak-proof mechanical joint that withstands thermal cycling and pressure fluctuations. The expanded joint technology eliminates the risk of crevice corrosion that commonly affects welded tube-to-tube sheet joints in acidic environments.
• Compact High-Efficiency Footprint: With overall dimensions of Φ500×7174×960 mm and a total weight of 3,391 kilograms, the CD-AP-60 delivers maximum cooling capacity within a minimized installation footprint. The vertical shell orientation further reduces ground space requirements and simplifies piping connections in congested plant layouts.
• Comprehensive Quality Verification: Each cooler undergoes mandatory hydrostatic testing at 1.5 times the design pressure, helium leak detection on all tube-to-tube sheet joints, and electrochemical potential mapping across all anodically protected surfaces. Full material traceability is maintained from mill certificate to finished product.

The CD-AP-60 Anodic Protection Sulfuric Acid Cooler is ideally suited for medium-scale sulfuric acid cooling operations in chemical manufacturing plants, fertilizer production facilities, and non-ferrous metal hydrometallurgical processing. Typical applications include acid circulation cooling loops in sulfuric acid production plants with daily capacities up to several hundred tons, intermediate acid cooling stages in titanium dioxide pigment manufacturing, and electrolyte temperature control systems in copper and zinc electrowinning tankhouses. The 60 square meter heat exchange area and 98 percent acid concentration capability make this model particularly effective for cooling the product acid stream in sulfur-burning sulfuric acid plants where acid concentrations range from 96 to 99 percent. The compact dimensions and moderate weight also make the CD-AP-60 suitable for plant modernization projects where existing acid cooling infrastructure needs to be upgraded within constrained equipment layouts.

Each CD-AP-60 Anodic Protection Sulfuric Acid Cooler is shipped in naked packing with a protective steel frame that safeguards against transportation impacts while allowing full visual inspection upon delivery. All flange faces are fitted with protective covers, and nozzle openings are sealed with desiccant packs inside to prevent moisture ingress during transit. Our quality assurance program includes 100 percent radiographic examination of all shell and tube sheet welds, positive material identification (PMI) verification of all stainless steel components, and complete hydrostatic testing per ASME Section VIII Division 1 requirements. Every cooler ships with a comprehensive documentation package including material test certificates, weld procedure specifications (WPS), procedure qualification records (PQR), pressure test reports, and anodic protection system commissioning guidelines. Carpe Diem provides 24-month warranty coverage against manufacturing defects and offers on-site commissioning supervision by experienced field service engineers upon request.