1. What is an Acid Gas Condensing Cooler?

An Acid Gas Condensing Cooler is a type of heat exchanger specifically designed to cool down high-temperature acidic gases and promote partial condensation of acid vapors such as HCl, SO₂, or H₂S. These units are widely used in:

• Sulfur recovery (Claus process)

• Hydrochloric acid recovery

• Non-ferrous metal smelting off-gas treatment

• Flue gas condensation after wet desulfurization

• Acidic exhaust gas treatment in chemical industries

2. Characteristics of Acidic Gas Streams

3. Common Equipment Structures

(1) Shell-and-Tube Condensing Cooler (most common)

• Acid gas flows through shell or tube side

• Cooling medium: water, glycol, or oil

• Tube bundle material: corrosion-resistant alloys (e.g., titanium, Hastelloy, 316L)

(2) Double-Pipe Cooler

• Used for small flow, high-corrosion gas streams

• Compact and high heat transfer efficiency

4. Key Design Calculations

(1) Heat Duty

• $G$: gas mass flow rate (kg/s)

• $C_p$: specific heat (kJ/kg·K)

• $T_{in}, T_{out}$: inlet & outlet temperatures (°C)

(2) Heat Exchange Area

• $K$: overall heat transfer coefficient (typically 80–300 W/m²·K)

• $Delta T_{lm}$: log mean temperature difference

(3) Condensate Handling

• Drainage system required for acidic condensate

• Prevent accumulation to avoid under-deposit corrosion

5. Material Selection Guide

6. Recommended Safety & Maintenance Features

• Design pressure ≥ 120% of operating pressure

• Acid-resistant seals, dual-sealing flanges

• Automatic condensate discharge system

• Periodic inspection of tube wall thickness & lining integrity

• Optional anti-fouling design for sulfur deposition

7. We Can Provide

Technical Specification Sheet (editable)
Excel Calculator for Heat Duty & Area Estimation
2D/3D Schematic Illustrations
Material Comparison Table for Corrosion Resistance

Want to Proceed with a Preliminary Design?

If you can share the following data, I can help generate a basic design spec:

• Gas composition & flow rate (Nm³/h or kg/h)

• Inlet & outlet temperatures (°C)

• Cooling medium & temperature

• Material requirements or limitations

• Working pressure

• Purpose (e.g., bidding, design submission, proposal)