PP Scrubber

PP scrubber is a wet waste gas purification device built with a polypropylene (PP) tower body. The selection of this equipment starts from tower material and tower structure, not from a specific pollutant. PP is corrosion-resistant to acid and alkali media, light in weight, and operates stably from -10°C to 120°C. The tower can be vertical or horizontal, with single or multi-layer packing, and the spray medium can be circulating water, alkali, or acid depending on the waste gas.

• Step 1: choose vertical or horizontal tower. Vertical tower uses counter-current gas-liquid contact, occupies less floor space, and handles large air volume. Horizontal tower uses cross-flow contact, is lower in height, and suits height-limited installation positions.
• Step 2: choose tower diameter. Tower diameter is matched to air volume; empty tower gas velocity is designed at 2.4–2.7 m/s to ensure gas-liquid contact time meets absorption requirements.
• Step 3: choose packing layer quantity. Single-layer packing suits low-concentration waste gas; multi-layer packing suits high-concentration or high purification requirements. Each additional packing layer increases pressure loss, requiring a higher-pressure fan.
• Step 4: choose spray medium. Circulating water, alkali, or acid selected according to waste gas acidity/alkalinity.
• PP material is corrosion-resistant to acid and alkali media; equipment weight is light and specific strength is high. Pressure loss controlled at 390–780 Pa, reducing matched fan power and long-term power consumption.
• Circulating water pump power and dosing system can be selected according to liquid-gas ratio and site conditions.

• Tower diameter and height designed to air volume and installation space
• Tower material: PP, PVC, fiberglass
• Structure: vertical or horizontal
• Packing layer quantity configured to waste gas concentration and purification requirements
• Spray medium selected to waste gas acidity/alkalinity
• Inlet/outlet direction adjusted to site duct layout
• Circulating water pump power and dosing system optional
• Liquid-gas ratio designed to working conditions
• OEM/ODM: customized to waste gas composition, air volume, and installation space; customer brand on nameplate and outer packaging

After tower welding, weld seam sealing is checked, confirming no leakage. Before packing installation, packing specification and filling density are checked. Spray system is tested circuit by circuit for spray uniformity. Circulating water pump test run records current and flow. 100% powered test run before packing, confirming spray and circulation system action. Third-party inspection accepted. The factory has supplied this equipment to electroplating, chemical, and metallurgy workshops, and uses this field data to set packing layer quantity and liquid-gas ratio.