FRP Desulfurization Tower for Flue Gas Treatment
Created on 08.20
FRP Desulfurization Tower for Corrosive Industrial Flue Gas Treatment
Sulfur-containing flue gas presents two major challenges for industrial plants: meeting emission requirements and protecting equipment against chemical corrosion.
An FRP desulfurization tower combines wet gas cleaning with a corrosion-resistant fiberglass structure. It can be customized for boilers, kilns, power plants, chemical facilities and other industrial exhaust gas treatment systems.
Hebei Yingnai designs and manufactures FRP/GRP desulfurization towers, scrubber towers, absorber towers, ductwork and related components according to each project’s actual operating conditions.
How Does an FRP Desulfurization Tower Work?
In a typical wet desulfurization process, flue gas enters the lower section of the tower and moves upward.
An alkaline scrubbing liquid is distributed through spray nozzles, packing or swirl-contact components. This creates a large gas-liquid contact area, allowing sulfur dioxide and other soluble acidic components to be absorbed and neutralized.
Before the treated gas leaves the tower, a mist eliminator removes entrained liquid droplets. The scrubbing liquid is then collected and recirculated through the system.
A complete FRP desulfurization system may include:
- FRP desulfurization or absorber tower
- Spray nozzles and internal piping
- Packing or swirl-contact components
- Mist eliminator
- Circulation tank
- Circulation pumps
- FRP inlet and outlet ductwork
- Access platforms and inspection openings
- FRP exhaust stack
- Washing and monitoring system
The internal configuration is selected according to the gas composition, required removal performance, pressure-drop limit and operating conditions.
Why Use FRP for Desulfurization Equipment?
Excellent Corrosion Resistance
Wet flue gas may contain sulfur dioxide, acidic condensate, alkaline slurry and other corrosive substances. The FRP corrosion barrier and structural layers can be designed with a suitable resin system for the actual chemical environment.
Custom Engineering
Tower diameter, height, wall thickness, resin system, internal components, nozzles, flanges and access openings can all be customized.
Our historical product series covers reference gas-flow capacities from approximately 3,000 to 600,000 m³/h. Final dimensions and performance must be confirmed according to the customer’s operating data.
Lightweight and High Strength
Compared with many traditional metallic structures, FRP equipment offers a favorable strength-to-weight ratio. Its lower weight may simplify transportation, lifting and installation, especially for large tower sections.
Reduced Corrosion Maintenance
FRP does not require the same type of external and internal corrosion protection used for many metal systems. When the resin system and laminate structure are correctly selected, it can help reduce corrosion-related maintenance and replacement requirements.
Integrated FRP System
The tower body, ductwork, stack, circulation tank and connecting components can be supplied as an integrated corrosion-resistant system. This reduces material compatibility problems between connected equipment.
Typical Applications
FRP desulfurization and scrubber towers can be engineered for:
- Coal-fired and oil-fired boiler flue gas
- Industrial kiln exhaust gas
- Power plant desulfurization systems
- Chemical and fertilizer plants
- Metallurgical and mineral-processing facilities
- Acidic exhaust gas absorption
- Industrial dust and mist removal
- Odor and corrosive gas treatment
The exact process must be selected according to the pollutants, gas temperature, gas volume and required outlet-emission target.
Temperature Must Be Evaluated Carefully
FRP equipment should not be selected only according to gas-flow capacity.
The continuous operating temperature and possible temperature peaks must remain within the design limits of the selected resin system and laminate structure. If the incoming flue gas temperature is too high, a quenching, cooling or gas-conditioning stage may be required before the gas enters the FRP tower.
Please provide both normal operating temperature and maximum possible temperature when requesting a technical proposal.
Information Required for Engineering Design
To prepare a suitable technical solution and quotation, please provide:
- Required gas-flow rate in m³/h
- Normal and maximum gas temperature
- Inlet SO₂ concentration
- Required outlet SO₂ concentration
- Dust concentration and particle characteristics
- Other chemical components in the gas
- Selected or preferred absorbent
- Required pressure-drop limit
- Tower installation location
- Available installation space
- Required design codes or project standards
- Scope of supply and required accessories
Based on this information, our engineering team can evaluate the tower diameter, height, resin system, laminate structure, spray arrangement, mist eliminator and connected ductwork.
A Project-Specific FRP Solution
Desulfurization efficiency depends on the inlet pollutant concentration, absorbent chemistry, liquid-to-gas ratio, gas-liquid contact method, temperature and required outlet target.
For this reason, Hebei Yingnai does not rely on one standard tower for every application. We develop the equipment configuration around the actual project requirements.
Whether you require a single FRP scrubber tower or a complete corrosion-resistant flue gas treatment system, we can support equipment design, manufacturing and technical coordination.
Request a Technical Proposal
Planning a boiler, kiln, power plant or industrial exhaust gas treatment project?
Send us your gas-flow rate, temperature, pollutant concentration and required outlet-emission target. We will evaluate the operating conditions and recommend a suitable FRP desulfurization tower configuration.
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