XU Hongjian, PAN Weiguo, GUO Ruitang, et al. STUDY ON AFFECTING FACTORS UPON BEHAVIOR OF CaSO4·2H2O CRYSTALLIZATION[J]. Thermal power generation, 2010, 39(11): 45-48.
XU Hongjian, PAN Weiguo, GUO Ruitang, et al. STUDY ON AFFECTING FACTORS UPON BEHAVIOR OF CaSO4·2H2O CRYSTALLIZATION[J]. Thermal power generation, 2010, 39(11): 45-48.DOI:
The growth regularity of gypsum(CaSO4·2H2O) crystal under condition of wet flue gas desulphurization(WFGD) and the affecting factors upon crystallization of CaSO4·2H2O have been studied.The study shows that the induced time of CaSO4·2H2O crystallization is gradually shortened as the reaction temperature raises.The metallic impurities
such as ions of Fe
Mg
and Al
affect the state of CaSo4·2H2O crystal
decreasing the dewaterability of CaSO4·2H2O
the sequence of inhibiting ability to crystallization by similar mole concentration of metallic impurities is as follows:Al3+Fe3+Mg2+;the influence of Mg2+ upon the inducel time is basically negligble.