CAJ | 학술논문

为研究HCl电解质体系中电化学脱硫对煤质的影响，利用扫描电镜（ SEM）、X射线荧光光谱（XRF）、X-射线衍射（XRD）、红外光谱（FT-IR）等分析方法对原煤和脱硫后煤样进行成分分析，研究煤中矿物化学成分、矿物元素含量、黄铁矿分布形态、煤表面官能团变化等。结果表明，在电解质为HCl，电流密度0.044 A/ cm2，煤浆质量浓度0.02 g / mL，电解质浓度0.75 mol/ L，煤粒度小于0.5 mm的条件下，电化学脱硫法可有效脱除煤中硫，全硫脱除率为76.32%，其中有机硫、无机硫脱除率分别为62.32%和82.80%，基本实现无机硫和有机硫的同步脱除；煤中灰分较脱硫前降低了9.38%，精煤发热量增加了0.70 MJ/ kg，表明电化学脱硫法基本不破坏煤的原有结构，有助于改善煤质。
위연구HCl전해질체계중전화학탈류대매질적영향，이용소묘전경（ SEM）、X사선형광광보（XRF）、X-사선연사（XRD）、홍외광보（FT-IR）등분석방법대원매화탈류후매양진행성분분석，연구매중광물화학성분、광물원소함량、황철광분포형태、매표면관능단변화등。결과표명，재전해질위HCl，전류밀도0.044 A/ cm2，매장질량농도0.02 g / mL，전해질농도0.75 mol/ L，매립도소우0.5 mm적조건하，전화학탈류법가유효탈제매중류，전류탈제솔위76.32%，기중유궤류、무궤류탈제솔분별위62.32%화82.80%，기본실현무궤류화유궤류적동보탈제；매중회분교탈류전강저료9.38%，정매발열량증가료0.70 MJ/ kg，표명전화학탈류법기본불파배매적원유결구，유조우개선매질。
In order to study the influence of electrolytic desulfurization on coal properties under HCl electrolyte condition,taking raw coal and coal samples after desulfurization as research objects,the changes of minerals composition,element content,pyrite distribution,surface oxygen groups were analyzed by SEM,XRF,XRD,FT - IR. The results showed that,when the concentration of electrolyte HCl was 0. 75 mol/ L,the current density was 0. 044 A/ cm2 ,the coal slurry mass concentration was 0. 02 g/ mL,the coal particle size was below 0. 5 mm,the electrochemical desulfurization method basically realized inorganic and organic sulfur simultaneous removal. The removal rate of total sulfur,organic sulfur and inorganic sulfur could reach 76. 32% ,62. 32% and 82. 80% . The ash of clean coal decreased by 9. 38% ,and the calorific value of clean coal increased by 0. 70 MJ/ kg,so the electrochemical desulfurization method improved the coal properties without destroying original coal structure.