Flue gas coming from coal or oil burning combustors and heaters in petrochemical plant contains 100~3000ppm SO₂ and NOx. Through cooperation with domestic universities, overseas engineering companies and catalyst producers, Keyon Process provides clients with highly efficient and reliable desulfurization and denitration solutions.We adopt a unique solvent that has highly selective and strong SO₂ adsorption . The solvent can deeply remove SO₂ in flue gas to make tail gas meet ultra-low SO₂ emission requirement ( SO₂≤35mg/Nm3). SO₂ in the solvent can be desorbed for regeneration usage, in the meantime released SO₂ can be used to produce sulfur or sulfuric acid.

The core of DSR process is DSR solvent that is highly selective to adsorbing SO₂, with minimum adsorption to CO₂, H₂O and N₂ etc.. Hence, the solvent has superb desulfurization ability in treating SO₂ contiaining flue gas or tail gas.

SO₂ enriched DSR solvent can be regenerated by heating and releasing of SO₂. Based on reasonable chemical composition, the DSR solvent has stable adsoption and strong desorption ability that ensures the release of SO₂ is easily achieved by heating, and leads to low energy consumption.