五彩湾煤微波脱钠提质研究  

Sodium removal from Wucaiwan coal by microwave treatment

作　　者：黄小河[1] 张守玉[1] 江锋浩 

机构地区：[1]上海理工大学能源与动力工程学院,上海200093

出　　处：《洁净煤技术》2017年第5期1-6,共6页Clean Coal Technology

基　　金：国家科技支撑计划资助项目(2012BAA04B01);上海理工大学科技发展资助项目(16KJFZ094)

摘　　要：为探究微波处理对五彩湾煤脱钠提质的影响,使用微波炉及电加热炉对五彩湾煤进行水洗脱钠后并对水洗后五彩湾煤进行微波和传统鼓风干燥试验,使用电感耦合等离子体原子发射光谱仪对原煤及水洗煤样进行Na含量分析。研究结果表明,五彩湾煤中钠元素主要以水溶性钠形式存在。煤样经200℃微波加热水洗及传统热风干燥后脱钠率可达到51.6%,相同条件下微波水洗脱钠率高于传统电加热水洗脱钠率。传统电加热水洗后煤样微波干燥的条件下,总脱钠率随微波功率增加而增加,200℃微波干燥条件下最佳停留时间为10 min。相同条件下微波干燥脱钠率较传统热风干燥脱钠率高。In order to study the effect of microwave treatment on the sodium removal from the Wucaiwan coal, Wucaiwan coal was water-washed in laboratory microwave oven and high-pressure reactor, and the coal sample prepared by water-washing in high-pressure reactor was dried by microwave drying and traditional air drying method, respectively. The sodium content of the raw and treated coal samples was determined by an inductively coupled plasma atomic emission spectroscopy. The results indicate that the sodium contained in Wucaiwan coal is mainly in the forms of water-soluble sodium. With the increase of temperature, the efficiency of sodium removal from the coal using microwave water-washing followed by traditional air drying increased and reached 51.6% at 200℃. Compared with the electric heating water washing method, the microwave treatment has the higher efficiency of sodium removal. The sodium content of the electric heating wa- ter-washed coal sample can be further decreased by the subsequent microwave drying. The best microwave drying time （ at 200 ℃） for the sodium removal from the coal treated by the electric washing is 10 min. Compared with the hot air drying, a higher efficiency of sodium removal was obtained by the microwave drying after the electric heating water washing （200℃） in a short time.

关 键 词：微波 脱钠 五彩湾煤 水洗 

分 类 号：TQ536[化学工程—煤化学工程]