FRP Desulfurization Tower

Product Overview

The FRP desulfurization tower is a fiberglass reinforced plastic wet scrubbing vessel used to remove sulfur dioxide, acid gases and associated particulates from industrial flue gas. It is also called an FRP FGD tower, fiberglass desulfurization tower, FRP absorption tower, FRP wet scrubber tower or fiberglass SO₂ removal tower.

Flue gas enters the tower and contacts alkaline absorbent through spray, packing or swirl plate sections. Sulfur dioxide and acid components are absorbed and neutralized, forming sulfite or sulfate compounds. The purified gas passes through a demister before discharge, while the circulating slurry or washing liquid is collected, treated and reused. Typical SO₂ removal efficiency can reach 90–99 percent depending on inlet concentration, liquid-to-gas ratio and process configuration.

FRP construction provides strong corrosion resistance against acidic slurry, wet flue gas and chloride-containing condensate, making it a cost-effective alternative to high-alloy steel for many wet desulfurization applications.

Why FRP for Desulfurization Towers

Wet flue gas desulfurization systems operate under low pH, high humidity and continuous slurry contact. The internal environment may contain sulfurous acid, sulfuric acid, chlorides, suspended solids and reaction byproducts, which can cause severe corrosion to carbon steel and many metallic materials.

FRP desulfurization towers resist wet corrosion better than ordinary carbon steel and can be manufactured with vinyl ester or epoxy vinyl ester resin systems to improve acid resistance. The material is lighter than steel, easier to form into large-diameter towers, and suitable for spray layers, piping, demister supports and structural sections inside the tower. For high-temperature inlet zones or heavy abrasion areas, additional wear-resistant lining or reinforced laminate design can be applied.

Structure & Working Principle

The FRP desulfurization tower is usually a vertical cylindrical vessel with gas inlet, gas outlet, spray system, optional packing or swirl plate section, demister, circulation tank and inspection ports. Flue gas flows upward while absorbent liquid is sprayed downward, forming counter-current gas-liquid contact.

The spray layer distributes alkaline slurry through nozzles to generate fine droplets and increase absorption surface area. If required, a packing layer or swirl plate section can be added to enhance mass transfer and improve SO₂ capture efficiency. The demister at the top removes entrained droplets to reduce carryover and protect downstream equipment.

Common absorbents include limestone slurry, lime slurry, sodium hydroxide solution and double-alkali systems. The selection depends on inlet SO₂ concentration, byproduct handling requirements and operating cost targets.

Typical Specifications

The FRP desulfurization tower is manufactured in vertical tower configuration, with diameter, height, wall thickness and internal layout customized according to gas volume and desulfurization requirements. Typical gas flow capacity can range from several thousand to several hundred thousand cubic meters per hour, and tower diameter is commonly designed between 1 m and 15 m depending on application scale.

Main components include FRP shell, spray nozzles, spray pipes, packing or swirl plate section, demister, circulation pump, drain outlet, inspection door and supporting structure. The number of spray layers, nozzle arrangement, liquid-to-gas ratio and demister type should be determined according to inlet SO₂ concentration, emission limit and site layout.

Typical Applications

FRP desulfurization towers are widely used in coal-fired boiler flue gas treatment, biomass boiler exhaust cleaning, brick kiln and tunnel kiln desulfurization, metallurgical furnace gas purification, chemical plant acid gas removal, waste incineration flue gas treatment, cement and lime kiln exhaust control, and industrial boiler desulfurization systems. They can also be combined with dust collectors, wet electrostatic precipitators, condensers and downstream polishing equipment to achieve integrated dust removal, desulfurization and mist separation.

Manufacturing & Company Strength

Wuxi Xinchangyuan Equipment Manufacturing Co., Ltd. specializes in the design and manufacture of stainless steel and FRP-compatible environmental process equipment, including wet electrostatic precipitators, absorption towers, spray towers, scrubber towers, anode modules and anode tube bundles. Our facility is equipped with plate rolling, laser cutting, CNC forming, automatic welding, surface treatment and module assembly capabilities, supporting both standard and customized equipment for industrial exhaust gas treatment.

For FRP desulfurization towers, we provide engineering support on process layout, material selection, structural design and integration with downstream treatment systems. Each tower is manufactured according to project flue gas composition, SO₂ load, temperature, corrosion level and installation conditions. Our team can coordinate FRP tower supply with stainless steel pretreatment units, demisters, circulation systems and WESP polishing stages, helping industrial customers achieve stable desulfurization performance and reliable long-term operation.

FAQ

What is an FRP desulfurization tower used for?
It is used to remove sulfur dioxide and acid gases from industrial flue gas through wet scrubbing and chemical absorption.

Can it also remove dust and mist?
Yes. With proper spray, packing or swirl plate design, it can achieve co-removal of particulates and mist, though a dedicated dust collector or WESP may be required for stricter emission limits.

Why is FRP preferred over carbon steel for wet FGD?
FRP offers better resistance to acidic slurry, wet corrosion and chloride attack, while being lighter and easier to fabricate into large tower structures.

Can it be customized for different fuels and kiln types?
Yes. Size, resin system, spray layers, packing type and circulation capacity can be customized according to boiler load, kiln type, sulfur content and local emission requirements.

Tel：+86 13656199922

Phone：+86 13656199922

Email：wxxcysbzzyxgs@163.com

Address：35-3 Yanqiao Road, Yanqiao Street, Huishan District, Wuxi City, Jiangsu Province, China