高硫煤电化学催化氧化脱硫机理的研究  

Mechanism of High-Sulfur Removal from Coal by Electrolytic Oxidation

作　　者：张鸿波[1,2] 李丽[1] 李悦[1] 王志杰[2] 

机构地区：[1]黑龙江科技学院,黑龙江哈尔滨150027 [2]山西潞安环保能源开发股份有限公司,山西长治046000

出　　处：《矿产综合利用》2013年第2期71-73,共3页Multipurpose Utilization of Mineral Resources

基　　金：教育部科学技术研究重点项目资助(211049);黑龙江自然科学基金项目(E201058);黑龙江省普通高等学校青年骨干教师支持计划项目(1155G48);山西潞安集团博士后基金项目(2009026)

摘　　要：电化学催化氧化脱硫方法是一种温和的化学脱硫方法,它比常规的物理和化学脱硫方法更具优势,对于无机硫(FeS2)和有机硫都有一定的脱除效果。但其脱硫机理至今还没有完全弄清楚。本文以石坷节高硫煤样为原料,在酸性体系下,利用电化学催化氧化方法对煤样进行了处理。并利用X射线衍射(XRD)、X射线荧光光谱(XRF)等现代测试手段研究煤中矿物成分,矿物元素含量的变化,以及电解液组分变化。研究表明,电化学催化氧化脱硫是借助电解阳极表面产生活性氧等氧化剂或高价离子氧化煤中的硫,将煤中黄铁矿硫和有机硫化物转化成水溶性的硫化合物,从而达到脱硫的目的。通过试验分析也可得出,加入的催化剂离子也参与了反应,加速了脱硫的进程。The method of desulfurization by electrochemically catalytic oxidation is a mildchemical one, which has more advantagesthanconventionalphysical and chemicalmethods. Furthermore, it has some effects on the removal of inorganicsulfur such asFeS2 or organicsulfur, but itsdesulfurization mechanismisstillnot fully understood. This paper used the method of electrochemical oxidation desulfurization to process the coal in acidicsystem and used XRD, XRF, and other modem testing technology to analyze the mineral composition, changes in content of mineral element and electrolyte component. The research showed that the pyrite sulfur and the organic sulfide were converted into water-soluble sulfur compounds through the electrolysis anode surface producing active oxygen and other oxidants or sulfur in high ions oxidized coal when the method of desulfurization by electrochemically catalytic oxidation was used. The test analysis finds that the added catalyst ions are also involved in the reaction and the process of desulfu- rization is accelerated.

关 键 词：机理 X射线衍射 X荧光光谱分析 电化学脱硫 

分 类 号：TD94[矿业工程—选矿]