摘要
Abstract
This paper describes an exploration of the effects of microwave and medicaments on coal desulfurization by the tests of three types of medium and high sulfur coals.The study investigates the effects of factors including medicament type,microwave time,microwave power,solid liquid ratio,and reagent ratio on desulfurization efficiency by using the three desulfurization methods with microwave,me-dicament,and microwave medicament combination.The research results show that peracetic acid is a mild and efficient desulfurization agent with the optimal microwave power by 300,500 W,the optimal ac-tion time at 75 s,and the optimal solid-liquid ratio of coal sample to peracetic acid by 3∶60.Under the optimal desulfurization parameters,the sulfur reduction rates of Haibowan coal,Suhaitu coal,and Jinjitai coal are 73.3%,62.4%,40.8%,respectively.The order of sulfur reduction rate from high to low by using the three desulfurization methods is microwave medicament combination,medicament,microwave;The coal samples from Suhaitu,Haibowan,and Jinjitai treated with microwave for or over 45,60,15 s,respectively,the sulfur reduction rate of the combination of microwave and medicament is greater than the sum of microwave and medicament sulfur reduction,which indicating a synergistic effect;The analysis of sulfur speciation shows that the three desulfurization methods mainly remove pyrite sulfur,and the parti-cle size of the sample has a certain impact on the desulfurization of the medicaments.关键词
煤炭脱硫/微波/药剂/降硫率/协同Key words
desulfurization of coal/microwave/medication/sulfur reduction rate/coordination分类
矿业与冶金
