煤粒度和煤浆浓度对微生物法煤炭脱硫的影响

本文探讨了煤粒度和煤浆浓度对微生物脱硫的影响。实验结果表明,煤粒度越小,煤的脱硫率越高,小于0.054mm粒径的煤样(煤浆浓度10％),微生物在12天时间内,可脱除44.1％左右的硫,使煤的总含硫量从2.55％降到1.425％;浓度为10％的煤浆(粒径0.073—0.088mm)脱硫效果最好,微生物在12天时间内,可脱除38.9％左右的硫,使煤的总含硫量从2.55％降到1.558％。从而确定出微生物法煤炭脱硫工艺的最佳粒径要求和煤浆浓度条件。

Influenee of Coal Size and Pulp Concentration upon Microbial Desulfurization of Coal

On the basis of experiments, this paper discusses the influence of coal size and pulp concentration upon mic-robial desulfurization of coal. Experimental results show that the smaller the coal size is, the higher the coal desulfurization rate will be. When the coal size is smaller than 0.054mm (coal pulp concentration is 10%), 44.1% of the sulfur in the coal can be removed in 12 days, thus reducing the total sulfur content of the coal from 2.55% to 1.425%. The optimum pulp concentration for coal desulfurization is 10%. Under this condition (coal size is 0.073-0.088mm), the microorganism can remove about 38.9% of the sulfur in the coal in 12 days, thus reducing the total sulfur content of the coal from 2.55% to 1.558%.