贝壳类新型钙基脱硫剂的试验研究

Experimental study on the new-type calcium-based sorbent shell

将贝壳用于流化床进行燃烧脱硫试验研究 ,并与一种优质石灰石比较 .结果表明 ,贝壳具有比石灰石更高的脱硫效率和钙利用率 ;并且具有更好的高温硫化反应活性 ,贝壳的最佳脱硫温度比石灰石约高 10 0℃ .利用压汞仪对试验样品进行微观结构测定 ,煅烧后贝壳的微孔直径主要集中在 0 2— 5 0 μm之间 ,而石灰石的微孔直径主要集中在 0 0 0 5— 0 14 2 μm之间 ,贝壳表现出较好的微观孔结构特性 .研究表明 。

Shell was used in the study of fluidized-bed combustion desulfurization experiment, which was compared with one kind of good limestone. The results show that shell has higher desulfurization efficiency and calcium utilization ratio than limestone, and furthermore, it has better high-temperature-reaction activity , the optimum desulfurization temperature of shell is about 100℃ higher than that of limestone. Microscopic structure of the test samples was measured by mercury porosimeter. Pore diameter of the calcined shell mainly focuses the range of 0.2 to 5.0 μm, while that of the calcined limestone is mainly between 0.005 and 0.142 μm. Shell represents better micro-structural characteristic of inner pore. The results show that shell is one kind of new-type sorbent with better desulfurization performance than limestone.