Experimental research on flue gas desulfurization by water mist

Flue gas desulfurization process with water mist was conducted on spray-spouted tower. By use of fine limestone particles as the desulfurization sorbent, the experiments to investigate the effects of operating conditions on the SO₂ removal efficiency had been carried out. Results showed that it has been obtained that the SO₂ removal efficiency was 80% Some alkali metal compounds (such as NaON, NaCl, MgCl₂) have been used as an additive to improve the SO₂ removal efficiency. The experimental results show that the three additives can increase significantly desulfurization efficiency. The effects of NaOH and NaCl are better than MgCl₂, the desulfurization efficiency using the additives is over 90% comparative with without additives process.