Ammonia-based desulphurisation technology
Product Details
I. Overview
The ammonia desulphurisation process utilises liquid ammonia or ammonia water to remove SO₂ from flue gas, whilst simultaneously producing high-quality ammonium sulphate [(NH₄)₂SO₄]. This technology is particularly well-suited for the removal of SO₂ from flue gases in large-scale thermal power generation units and chemical plants that burn low-cost, high-sulphur fuels. By utilising waste ammonia for desulphurisation whilst producing high-quality, high-purity ammonium sulphate, it is gradually becoming the mainstream technology for the circular economy and comprehensive utilisation of flue gas desulphurisation in large-scale projects.
II. Characteristics of the Ammonia Desulphurisation Process
(1) Technologically mature: This ammonia desulphurisation technology is designed for flue gas volumes typical of 500 MW-class power plants.
(2) The desulphurisation tower is resistant to scaling.
(3) It offers strong adaptability to variations in fuel sulphur content, particularly for the desulphurisation of high-sulphur coal, high-sulphur heavy oil and high-sulphur petroleum coke, with no secondary pollution.
(4) The by-product, ammonium sulphate, has a wide range of applications.
(5) Low NH₃ escape rate, ≤10 ppm.
(6) High desulphurisation efficiency, easily achieving levels generally exceeding 95%.
(7) Simple system design.
⑻ Compact equipment footprint.
⑼ High utilisation rate of the absorbent.
⑽ Turns waste into a valuable resource; the sale of by-products yields significant economic benefits.
III. Scope of Application
⑴ New or retrofitted medium-to-large power generation units of 50 MW and above;
⑵. Desulphurisation of municipal gas plants;
⑶. Fuels with a sulphur content of 0.5% to 5% or higher;
⑷. Process desulphurisation in oil refineries;
⑸. Applications requiring a desulphurisation efficiency of 95% or higher;
⑹. Facilities located in areas with synthetic ammonia production plants in the vicinity;
⑺. Power stations in saline-alkali regions.
