【摘要】 采用形态分离法 ,研究了硫酸钙、氧化钙、铝土矿三种固体吸附剂在煤燃烧过程中对痕量重金属元素Cd,Pb,Co,Cu和 Ni释放的化学控制 .结果表明 ,三种吸附剂对重金属元素具有一定的捕获力 .三种吸附剂对重金属元素的吸附既有物理吸附 ,又有吸附剂与重金属之间的化学反应更多还原

【Abstract】 Three solid sorbents (Calcium sulfate, Calcium oxide and bauxite) were used to control the emission of heavy metals (Cd, Pb, Co, Cu, Ni) in coal combustion. The speciation extraction method was applied to study the chemical control. The results show that the overall sorption is a complex combination of physical adsorption and chemical reaction between sorbents and heavy metals. It can be seen that the sorbents have certain capacity of adsorption of heavy metals from the distribution of heavy metals between coarse ash residues and fine particles and also from the increment of stable speciation in fine particles.更多还原