Zhongsheng's Flue Gas Desulfurization (FGD) Scrubber combines SO₂ removal and particulate collection in a single integrated tower. Using lime/limestone wet scrubbing, it achieves high desulfurization efficiency while producing reusable gypsum byproduct — with no moving parts, low operating cost, and compliance with EPA NSPS, EU Industrial Emissions Directive 2010/75/EU, and World Bank emission guidelines.
Zhongsheng Environmental's FGD Scrubber System delivers simultaneous sulfur dioxide removal and particulate capture in a compact, single-vessel design. Engineered on aerodynamic and fluid-dynamic principles, the scrubber accelerates hot flue gas into intimate contact with an alkaline lime slurry, generating fine droplets that maximize gas–liquid contact area. SO₂ and other acid gases react with the calcium-based sorbent to form calcium sulfate (gypsum), while entrained dust particles are captured by inertial impaction and washed from the gas stream. A dedicated separation stage removes the gypsum slurry, producing clean flue gas that meets stringent emission limits and a solid byproduct suitable for construction applications.
Hot flue gas from the boiler or furnace enters the scrubber at high velocity and is directed through a series of acceleration and contact zones. As the gas stream impacts the circulating lime/limestone slurry, the high temperature and turbulent mixing rapidly atomize the liquid into fine droplets, creating an extensive gas–liquid interface.
The key chemical reactions are:
Dust particles are simultaneously captured through inertial impaction, interception, and diffusion within the wet scrubbing zone. The cleaned gas then passes through a mist elimination stage to remove entrained droplets before being discharged through the stack. The spent slurry — now rich in gypsum — is directed to a separation/dewatering system for byproduct recovery.
| Parameter | Specification |
|---|---|
| Desulfurization Efficiency | ≥ 90% (up to 98% with enhanced design) |
| Dust Removal Efficiency | ≥ 95% |
| Sorbent | Quicklime (CaO) or Limestone (CaCO₃) |
| Applicable Flue Gas Temp. | Up to 250 °C inlet |
| Pressure Drop | 800 – 1,500 Pa (application dependent) |
| Byproduct | FGD Gypsum (CaSO₄ · 2H₂O) |
| Moving Parts | None (static internals) |
| Construction Material | Carbon steel with FRP/rubber lining; 316L SS options |
| Applicable Standards | EPA NSPS (40 CFR Part 60), EU IED 2010/75/EU, World Bank EHS Guidelines |
Zhongsheng's integrated FGD scrubber achieves dual-purpose emission control — SO₂ and particulate — in a single, zero-moving-part vessel that costs less to install, operate, and maintain than separate systems. The use of commodity lime as a sorbent keeps operating expenses low, while gypsum byproduct recovery can generate revenue or offset disposal costs. With no rotating components to wear or fail, our scrubbers deliver decades of reliable service with minimal downtime. Zhongsheng provides complete project support including emissions modeling, system sizing, structural design, installation supervision, and post-commissioning performance verification.
Industrial boilers, foundries, coke ovens, ceramic kilns, cement rotary kilns, refractory tunnel kilns, rare earth processing, smelting, glass manufacturing, food drying, and power plants.
Yes, the calcium sulfate (gypsum) byproduct is suitable for wallboard manufacturing, cement additive, and soil amendment — offsetting disposal costs.
Widely available lime or limestone — low-cost, abundant resources with no proprietary chemicals required.
No, static internal components eliminate mechanical wear, reduce maintenance frequency, and extend service life significantly.
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