Zhili provides specialized materials for FGD systems: UHMWPE linings for absorber tanks, rubber compounds for slurry handling, nickel-based hardfacing for pump components, and low-chromium alloys for limestone grinding.
Flue Gas Desulfurization (FGD) and chemical desulfurization systems operate in one of the most corrosive and abrasive environments in process industry. The combination of acidic slurry (pH 3-6), high chloride content from coal-derived HCl, gypsum and limestone slurry abrasion, and temperature gradients creates a unique challenge for every wetted surface. Each FGD component — absorber tanks, slurry pumps, piping, and dewatering equipment — faces the combined attack of chemical corrosion and mechanical abrasion simultaneously.
Zhili provides specialized materials for FGD systems: UHMWPE linings for absorber tanks, rubber compounds for slurry handling, nickel-based hardfacing for pump components, and low-chromium alloys for limestone grinding. Our solutions are proven across wet limestone, semi-dry spray dryer, and sodium-based desulfurization processes in power plants, steel mills, and chemical facilities worldwide.
Ultra-high-molecular-weight polyethylene absorber tank linings, spray shields, and nozzle liners. Zero chemical absorption, 10× better wear resistance than steel, inert to pH 1-14.
Natural rubber and butyl rubber linings for limestone slurry pipes, pump casings, and absorber internals. Formulated for FGD chemistry — acid-resistant, chloride-resistant.
Low-chromium cast iron grinding balls for wet limestone ball mills. Optimized corrosion-wear balance for acidic FGD slurry environments.
Rubber-lined or Ni-based hardfaced slurry pump components for limestone-gypsum slurry transport. Designed for high-flow, high-abrasion FGD slurry service.
Nickel-based flux-cored hardfacing wires for rebuilding worn FGD slurry pump impellers, fan blades, and valve seats in-situ.
Stainless steel (316L) and polyurethane components for gypsum thickening and dewatering. Optimized slot geometry for maximum dewatering rate.
The premium lining material for FGD absorber tanks, slurry pipes, and hoppers. Molecular weight 3-6 million g/mol provides exceptional abrasion resistance (10x better than steel), near-zero water absorption, and complete chemical inertness to acidic FGD slurries including chloride and sulfate solutions. Service life exceeds 15 years in FGD absorber service.
For FGD slurry pump impellers, pipe bends, and tank linings, natural rubber and synthetic rubber compounds provide excellent abrasion resistance with good chemical resistance. Zhili formulates compounds specifically for FGD chemistry — high chloride content, acidic pH, and temperature cycling from ambient to 60C. Butyl rubber is preferred for absorber linings due to superior H2SO4 and HCl resistance.
For limestone grinding in FGD ball mills, standard high-chromium alloys suffer galvanic corrosion in acidic slurry. Zhili's LC-FGD alloy (2-3% Cr, optimized C content) provides the right balance of corrosion resistance (Cr2O3 passive layer) and abrasion resistance for wet limestone grinding.
For slurry pump volutes, impeller leading edges, and fan blades, NiCrBSi (Colmonoy-type) hardfacing overlays applied by PTA or oxy-acetylene welding provide excellent resistance to combined corrosive-abrasive wear in high-chloride FGD environments.
Limestone-gypsum slurry absorbs SO2 at pH 5-6. Tank walls, spray headers, and mist eliminators face slurry droplet impact abrasion and chemical corrosion. UHMWPE or rubber linings are the standard solution.
Wet ball milling of limestone to 90% <75um for slurry preparation. Grinding media and mill liners face three-body abrasion from angular limestone in acidic slurry (pH 4-5).
Limestone and gypsum slurry pumps at high flow rates (500-2000 m3/h). Pump impellers and volutes experience severe slurry abrasion — rubber-lined or Ni-based hardfaced components are optimal.
Gypsum slurry dewatering in centrifuges and belt filters. 316L stainless steel or polyurethane components resist gypsum crystal abrasion and residual chloride from wash water.
Wet, acidic flue gas handling at 50-80C with fine gypsum and fly ash particulate. Fan blades require erosion resistance plus corrosion protection — stainless steel or Ni-based alloy overlays.
Rotary atomizer and absorber vessel in semi-dry FGD. Lime/limestone slurry spray-dried at 150-200C. Vessel walls and atomizer components face corrosive gas attack and abrasive particulate erosion.
Provide medium composition and working condition parameters, we will recommend the optimal corrosion and wear resistant solution for you
We will fully understand your working conditions and recommend the most appropriate material selection. Provide drawings based on your machine models and spare parts dimensions.
Address:
Luoyang, Henan Province, China
Zhili International Limited : Hong Kong, China.
Factory 01 : Luoyang Henan, China
Factory 02 : Kunming Yunnan, China
Email: cnwearparts@lyzhili.com
Phone/WhatsApp: +86-1335-3997-333
Response: We will reply within 24 hours
Service: Free quotation · Worldwide sales · Short delivery cycle
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