电化学法在煤炭预脱硫中的应用

Coal desulfurization via electrochemical oxidation process

脱硫是煤炭工业和电力工业中煤炭的洁净燃烧和加工技术的研究重点,目前有燃烧过程中脱硫和烟气脱硫,均为燃烧后的脱硫技术。近年来,多种新型的燃烧前脱硫技术涌现,电化学脱硫法为其中之一,通过电氧化作用将煤炭中的低价态无机硫和有机硫氧化为硫酸盐硫,达到脱硫的目的。本文综述了该技术的几种典型形式、脱硫原理、研究进展及其在实际煤炭处理中的应用情况,展望了电化学技术在前置煤脱硫中的发展方向和应用前景。

Electrochemical desulfurization was an attractive new technique for coal desulfurization before coal combustion in coal and power industries.Organic and inorganic sulfur compounds in coal were converted to sulfate by using electrochemical oxidation method.In this paper, several typical processes and desulfurization mechanisms were introduced in details.The status of laboratory scale research and the application in coal treatment were summarized.The prospects of this technique were proposed as well.