钙基脱硫剂孔隙分形特性的实验研究

分形维数是描述分形结构特性的一个重要参数，其反映了结构的规划程度。通过实验的方法，研究钙基脱硫剂在不同温度，气氛及烧结时间等煅烧条件下，对孔结构分形维数的影响，以及分形特性对脱硫剂的硫化能力的影响。结果表明煅烧温度对CaO孔结构的分形维数影响较小；CaO孔隙的分形维数随着煅烧气氛中的CO2浓度的增加而减小，随着烧结时间的延长而减小，脱硫剂硫化过程中形成的不可进行孔隙量随着分形维数的增大而增大。

Experimental Investigation on Fractal Properties of Pore Structure in Calcium-based Sorbents

Fractal dimension, as an important parameter describing a fractal structure, reflects the regularity degree of a structure. By way of experiments investigated is the effect on pore structure fractal dimension of calcium based sorbents under calcination conditions of various temperatures, atmospheres and sintering durations as well as the effect of fractal properties on the sulfating ability of the sorbents. The test results show that calcination temperature has a relatively small influence on CaO pore structure. The fractal dimension of the CaO pore will decrease with the increase in CO 2 concentration in the calcination atmosphere and also decrease with the prolongation of the sintering time. The quantity of inaccessible pores formed during the process of sorbent sulfation will increase with an increase in the fractal dimension.