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Limestone wet FGD systems

Open spray towers and forced oxidation for SO₂ removal and gypsum production.

The MET Limestone / Gypsum system utilizes an open spray tower and high velocity mist eliminators. The SO₂ in the flue gas is absorbed by the recycle slurry, containing calcium carbonate. By introducing air into the absorber reaction tank the calcium sulfite reaction product is oxidized into calcium sulfate (gypsum). The gypsum is dewatered and can be used in agricultural applications or in the manufacture of wallboard and cement. MET has more than 30 years and 95 projects of WFGD design utilizing limestone.

Benefits of Limestone / Gypsum

  • Cost effective technology for SO₂removal efficiency of 98+%
  • Minimal disposal costs with saleable gypsum by-product
  • Oxidized mercury control co-benefit

Advantages of MET System Design

Open Spray Tower

(lower pressure drop, no tray or packing)

Worldwide reputation

for reliability and flexibility

Greater than 98% SO₂

removal efficiencies

SO₂ Scrubber Studies and Upgrades By MET

WFGD Studies and upgrades

Need more information? Contact us.

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Proven SO2 Removal at Jiangxi Datang Fuzhou

Testimonials

Proven SO₂ Removal at Jiangxi Datang Fuzhou (2×1000 MW) — Client Letter from ECE

MET (Marsulex Environmental Technologies) supplied limestone Wet FGD technology for Jiangxi Datang International Fuzhou Power Plant, Units 1 & 2 (2×1000 MW) via licensee Ever Cleaning Environmental Inc. (ECE). The systems have delivered ≥99% SO₂ removal since commissioning (Unit 1 — 2015; Unit 2 — 2016).

Plant: Jiangxi Datang International Fuzhou, Jiangxi Province, PR China

  1. Units & capacity: 2 × 1000 MW
  2. Technology: Limestone Wet FGD
  3. Commissioning: 2015 & 2016
  4. Performance: SO₂ collection efficiency ≥99%
  5. Partner: Ever Cleaning Environmental Inc. (ECE), MET licensee in China
The Wet FGD Units have been in successful operation from commissioning to the present date, meeting the established SO₂ removal reduction requirements consistently. ECE/MET has proven itself to be a reliable, responsive, and diligent supplier.

— Client quote (ECE, 25 Aug 2025)

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An industrial power plant at dusk showcasing Marsulex Environmental Technologies' AS WFGD system that converts SO2 into eco-friendly fertilizer, enhancing sustainability.

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