【摘要】 对钛酸锌高温煤气脱硫剂固定床的寿命进行61个循环的不间断评价试验,历时2 500 h;对不同工艺条件下脱硫剂脱硫活性、再生条件及使用寿命进行了试验研究.试验结果表明:脱硫温度600℃时脱硫剂的穿透硫容最高,表明脱硫剂的活性最好;进口H2S浓度对脱硫剂活性有一些影响,但不是很大;脱硫时空速加大可以有限地提高脱硫剂的穿透硫容.但空速过高时会使脱硫剂的脱硫效率下降;脱硫剂为700℃再生时效果最好;在61个循环的不间断地评价试验过程中,脱硫剂的穿透硫容呈缓慢下降趋势,最终仍能保持在初始硫容的70%左右.更多还原

【Abstract】 The fixed-bed contanious desulfurization and regeneration assessment test of zinc titanate sorbent for hot-gas desulfurization was carried out in laboratory for 2 500 hours,61 cycles.The sorbent activities under different condition,regeneration condition and the life of the sorbent were tested.The test result indicates that the sorbent has the highest sulfur capacity in 600 ℃,which means it has the best desulfurization activity.The inlet concentration of H₂S has little influence on sorbent activity.Increasing the desulfurization space velocity can improve sulfur capacity to some extend,but the desulfurization efficiency will drop at too high space velocity.The sorbent has the best regeneration result at 700 ℃.During the course of 61 cycles’contanious assessment test,the sulfur capacity dropping slowly,finally,it is about 70% of initial sulfur capacity.更多还原