Studies on magnesium-based wet flue gas desulfurization process with oxidation inhibition of the byproduct

Reversible absorption of SO2 from simulated flue gas by aqueous calcium lactate solution

“…Both the amounts of excessive lactic acid and the consumption of calcium salt are determined by the amount of CaSO 4 produced. Currently, there are mature technologies to inhibit the oxidation of sulfite salts, such as CaSO 3 , Na 2 SO 3 and MgSO 3 [5,6,[19][20][21]. For example, an oxidation ratio between 4% and 10% is usually designed in the limestone inhibited oxidation process (LSIO) [1].…”

“…Therefore, regenerable technologies show many advantages for the capture of SO 2 . It is well known that sodium method [3,4], magnesium method [5,6] and amine method [7,8] have been commercially used in the process of desulfurization of flue gas. Besides the commercially used methods, the absorption of SO 2 by recyclable organic solvents [9,10] or ionic liquids (ILs) [11][12][13][14][15] has also been proposed by researchers in recent years.…”

Research on the thermal decomposition and kinetics of byproducts from MgO wet flue gas desulfurization

“…This technology has been widely used in Japan, Taiwan and Southeast Asia, and also in 330 Â 2 MW and 225 Â 2 MW power plants in China. Some studies about MgO WFDG such as the investment [8], the characteristics of the MgSO 3 and MgSO 3 Á6H 2 O [9][10][11], SO 2 absorption in desulfurization system [12,13], the oxidation inhibition of the byproducts [14,15], the byproduct recovering process [16,17], the magnesium-based WFGD process [18,19], and the activity of MgO generated from the decomposition of the by-products [20] have been carried out. Besides, a series of patents have been applied in this area [21][22][23][24][25] To date, the thermal decomposition and kinetics characteristic of the byproducts of MgO FGD from thermal power plant were reported rarely.…”

Recovery of SO2and MgO from By-Products of MgO Wet Flue Gas Desulfurization

“…Kang (2011) studied the effect of pyrolysis temperature on the activity of MgO generated from the decomposition of the by-products using a pipe furnace. Shen et al (2013) studied the magnesium-based wet FGD process with oxidation inhibition of the by-product. Chen et al (2009) studied the thermo-gravimetric kinetics of MgSO 3 $6H 2 O byproduct from Magnesia wet FGD.…”