基于生物脱硫技术的应用

论述了煤炭脱硫方法主要有燃烧前的物理方法、化学方法和生物方法,燃烧中的固硫技术及燃烧后的烟道气脱硫技术,提出目前可行且环保的脱硫方法主要是选煤技术脱硫与生物技术脱硫。阐述了有机硫、无机硫的脱除机理,提出了生物脱硫方法主要有微生物浸出法、微生物浮选法及微生物絮凝法,并对3种方法的优缺点进行分析。基于3DMINE软件,选用距离幂次反比法对钻孔进行插值以生成矿体,选用普通克里格法对矿体赋以含硫率,并最终建立矿体三维模型。采用燃烧前物理与生物结合方法对某矿进行脱硫分析,结果表明:6-2煤层含硫量为0.59%~1.00%的区域无需脱硫,含硫量为1.00%~1.72%的区域进行选煤脱硫,含硫量为1.72%~2.47%的区域进行生物脱硫,而2.47%~2.93%区域生物脱硫后的含硫量为1.00%~1.19%,还应进行有机硫的脱除。 The coal desulfurization methods include physical,chemical and biological method before combustion,sulfur capture technologies during combustion and flue gas desulfurization technologies after combustion.The feasible and environmentally friendly method is coal preparation technology and biological technology.Expound the removal mechanism about organic sulfur and inorganic sulfur.Introduce that biological desulfurization methods mainly include microbial leaching,microbial flotation and microbial flocculation method,analyse their advantages and disadvantages.With the help of 3DMINE software,adopt the Inverse Distance to generate the ore body on borehole interpolation and the Ordinary Kriging to assign the ore body with sulfur content,and the 3-D ore body model is set up finally.Analyse the sulfur content of ore body combining the physical and chemical desulfurization method before combustion.The results show that,the sulfur content of NO.6 to NO.2 coal seam,ranging from 0.59 percent to1.00 percent,1.00 percent to 1.72 percent,1.72 percent to 2.47 percent,2.47 percent to 2.93 percent,except the first one,desulfurize with coal preparation,biological and biological method.After desulfurization,the sulfur content of last one still ranges from 1.00 percent to 1.19 percent,which need to remove based on the organic sulfur removal mechanism