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[Intermediate experiment and mechanism analysis of flue gas desulfurization technology by circulating fluidized bed]
Xudong Zhao1, Shaohua Wu, Chunyuan Ma
1Dept. of Thermal Engineering, Harbin Institute of Technology, Harbin 150001, China. xudongz@263.net
Abstract:
A new Circulating Fluidized Bed was designed for intermediate experiment of flue gas desulphurization, in which the flue gas flow rate was 3500 m3/h. By using it, the basic experiments were carried out to study the influence of Ca/S and supersaturated temperature on desulphurization efficiency and the effect of the recycling solid particle in the sulfur removal column on desulphurization performance. The results showed when Ca/S = 1.2, the desulphurization efficiency was increased by 15% through the recycle of solid particle; the gas velocity inside the bed could be designed higher. The mechanism analysis were also studied and the method to increase effective resident time was introduced.