Boiler Water Scrubber

Boiler water scrubber is a wet washing device for boiler flue gas purification. Boiler flue gas contains dust, sulfur oxides, and other pollutants. The water scrubber contacts flue gas with water spray; dust is captured by droplets, part of water-soluble gas is absorbed, and clean gas is discharged. It is suitable for coal-fired boilers, biomass boilers, and oil-fired boilers. It uses water film or spray washing, with relatively simple structure and controllable operation and maintenance cost.

• Water film washing is uniform, good dust removal effect. Spray system forms a uniform water film on the tower inner wall; dust in flue gas is captured by the water film when approaching the tower wall under centrifugal force. Multi-stage spray and packing layer further improve gas-liquid contact.
• Simple structure, convenient operation and maintenance. Water scrubber consists of tower body, spray system, circulating water tank, and pump. Nozzle aperture designed according to water pressure change to avoid dust blockage. Daily maintenance mainly checks spray uniformity and cleans circulating water tank.
• Optional alkali dosing system. If flue gas contains sulfur oxides, pH automatic dosing system can be fitted to add alkali to circulating water to neutralize acid components, improving desulfurization efficiency.
• Settling tank separates sludge. Tower bottom settling tank separates dust sludge from washing liquid; clear liquid is recycled, sludge discharged periodically. Reduces circulating water replacement frequency.
• If flue gas is mainly dry dust, baghouse is preferred; if flue gas contains sulfur or high humidity, water scrubber is preferred.

• Coal-fired boiler flue gas dedusting
• Biomass boiler flue gas purification
• Oil-fired boiler flue gas treatment
• Industrial kiln flue gas washing
• Small boiler room flue gas treatment

• Tower diameter and height designed to boiler flue gas volume
• Spray layer quantity and nozzle arrangement configured to dedusting requirements
• Tower material selected to flue gas temperature and corrosiveness
• Alkali dosing system optional
• Settling tank volume designed to sludge volume
• Inlet/outlet direction adjusted to site duct layout
• OEM/ODM: customized to boiler type and flue gas parameters; customer brand on nameplate and outer packaging

After tower welding, weld seam sealing is checked. Spray system is tested for spray uniformity, confirming complete water film coverage. Circulating water pump test run records flow. 100% powered test run before packing. Third-party inspection accepted. The factory has supplied this equipment to coal-fired, biomass, and oil-fired boiler projects, and uses this field data to set spray layer quantity and settling tank volume.