High-Performance Alloy Solutions for Environmental Engineering & Flue Gas Desulfurization (FGD)
Environmental protection regulations require power plants, waste incinerators, and industrial facilities to scrub harmful pollutants—such as sulfur dioxide SO2, nitrogen oxides NO, hydrogen chloride HCl, and heavy metals—from flue gas streams before atmospheric release. However, Flue Gas Desulfurization (FGD) absorbers and waste-to-energy incinerators create some of the most corrosive micro-environments known to industry.
As gases cool inside scrubbers, highly acidic condensates containing high concentrations of chloride and fluoride ions form. Combined with operating temperatures up to 500°C, these fluids destroy conventional stainless steels within months. BELNADE provides premium nickel-chromium-molybdenum alloys specifically engineered to guarantee continuous, zero-leak operation in emission control systems.
Target Environmental Scenarios & Critical Components
1. Flue Gas Desulfurization (FGD) Systems in Power Plants
Absorber Tower Inlets & Wet Scrubbers: Zone exposed to hot, un-scrubbed acidic gas entering the wet slurry environment.
Mixing Zones & Dampers: Flue gas bypass dampers, inlet ducting, and spray header systems.
Chimney Liners & Outlet Ducts: Outlet ducting and stack liners subjected to low-pH wet acid condensation.
2. Waste-to-Energy (WtE) & Municipal Incinerators
Boiler Superheater Cladding: Alloy overlay and composite tubes protecting heat exchangers from molten salt and chlorine gas attack.
Incinerator Furnace Linings: Thermally stable sheets and anchors enduring thermal cycling and corrosive ash deposits.
3. Hazardous Waste & Municipal Wastewater Treatment
Wet Air Oxidation (WAO) Units: High-pressure reactors handling toxic sludge and industrial effluents.
Acid Recovery & Scrubbing Towers: Gas washing towers handling halogenated waste gas streams.
Recommended BELNADE Environmental Alloys
Alloy Grade | UNS Designation | Material Strengths | FGD / Environmental Function |
Hastelloy C-276 | UNS N10276 | Benchmark CRA alloy; exceptional resistance to localized pitting and crevice corrosion in low-pH high-chloride environments. | Absorber mixing zones, wet scrubbers, duct liners, spray nozzles. |
Hastelloy C-22 | UNS N06022 | Enhanced resistance to pitting in severe oxidizing wet acid chloride streams compared to C-276. | Critical scrubber internals, agitator shafts, inlet duct wallpapering. |
Inconel 625 | UNS N06625 | Excellent strength and resistance to high-temperature gas corrosion and molten salt deposits. | Waste incinerator boiler tube cladding, thermowell sheaves. |
Incoloy 800H | UNS N08810 | High thermal strength and carburization resistance at elevated temperatures. | Incinerator structural supports, high-temperature ductwork. |
Supply Options & Fabrication Technologies
BELNADE delivers flexible product forms tailored for large-scale environmental plant installation:
Wide Sheets & Plates (Wallpapering Sheets): 1.5mm to 3.0mm thin sheets designed for “wallpapering” interior steel ducting and absorber walls.
Clad Plates (Composite Material): Nickel alloy clad onto carbon steel backing plates, providing maximum corrosion resistance at optimal material cost.
Welded & Seamless Scrubbing Pipes: Large-diameter piping systems, spray pipes, and custom elbows.
Welding Wire & Electrodes: ERNiCrMo-4 and ERNiCrMo-10 welding wire ensuring matching corrosion resistance across welded seams.
The BELNADE Environmental Commitment
Extended Lifecycle Guarantee: Designed to achieve 20+ year operational service life in coal-fired and industrial FGD plants.
Cost-Effective Cladding Solutions: We supply both solid alloy sheets and explosive-bonded clad plates to optimize project CAPEX.
Turnkey Material Supply: Full range of plates, welding consumables, and fasteners delivered directly to project job sites.
Upgrade Your Emission Control Systems Today
Protect your FGD equipment and incineration plants against corrosive destruction. Contact the BELNADE technical sales team for material quotes and engineering specifications.
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Shanghai, China
Rm 106, Bld A, Zhengjue Industrial Park, Lane 1356, Xinyuan Road, Minhang Distric