焙烧温度对高温Mn-Fe-Ca脱硫剂脱硫性能的影响

EFFECT OF CALCINATION TEMPERATURE ON DESULFURIZATION PERFORMANCE OF Mn-Fe-Ca SORBENTS FOR HOT GOAL GAS DESULFURIZATION

采用机械混合法制备了Mn-Fe-Ca脱硫剂,通过XRD,SEM和H2-TPR等手段研究了焙烧温度对脱硫剂的织构、物相和还原性能的影响,并在固定床反应器中考察了焙烧温度对脱硫剂脱硫性能的影响.结果表明,1 050℃下焙烧后的脱硫剂有较好的机械强度和脱硫性能,脱硫精度最高可达4×10-6,硫容量可达33.3%.焙烧温度的改变,可以改变脱硫剂的微观结构和反应活性.

Desulfurization of coal-gas at high temperature is the critical technology improving energy utilizing efficiency. Mn-Fe-Ca sorbents were prepared by mixing methods and effect of calcination temperature on texture, phase, reducibility of Mn-Fe-Ca sorbents was investigated by XRD, SEM and H2-TPR. The effect of calcination temperature on desulfurization performance of Mn-Fe-Ca sorbents were studied in fixed bed reactor. The experimental results show that H2S could be desulfured to 4×10^-6 and sulfur content was 33.3% by the sorbents calcined at 1 050℃ which also had good mechanical intensity and desulfurization performance. The change of calcination temperature can effects the micro-structure and reactivity of the sorbents.