摘要
为了找到一种有效的高硫炼焦煤脱硫方法,以山西新裕煤矿和圪堆煤矿的高有机硫炼焦精煤为研究对象,考察酸性助剂(HCl),碱性助剂(NaOH),氧化性助剂(CH3COOH-H2O2混合溶剂),还原性助剂(HI)和有机类助剂(正丙醇、四氢萘、四氯乙烯)条件下,微波辐照时间对脱硫效果的影响。结果表明:盐酸助剂对煤中硫分脱除效果甚微;以NaOH为代表的碱性助剂只有在熔融的条件下才有较好的脱硫效果,其煤样全硫最多可下降39.14%和40.32%;醋酸和双氧水的混合溶液在反应的前2min即可达到较好脱硫效果,煤中硫分分别下降13.16%和24.11%;HI可以使煤中硫分分别下降20.72%和36.76%;在有机类助剂中,四氢萘和四氯乙烯分别对新裕煤样和圪堆煤样有一定脱硫效果,可使煤中硫分分别下降10.53%和11.07%。
The effect of different desulfurizers,such as HCl,NaOH,oxidizing reagent（mixture of acetic acid and hydrogen peroxide）,reducing reagent（HI）,and organic reagent（n-propyl alcohol,tetrahydronaphthalene,tetrachloroethylene）,on mcrowave desulfurization of coking coal at different irradiation times was investigated using the concentrates with high organic sulfur obtained from Xinyu and Gedui coal mines,Shanxi province.The results showed that HCl had little effect on sulfur removal with microwave irradiation.Alkaline assistant（NaOH）showed good desulfurization only under the melting condition,in which the sulfur contents of two coal samples decreased by 39.14%and 40.32%,respectively.The maximum desulfurizations of mixed solution（acetic acid and hydrogen peroxide）were achieved for two coal samples in 2 min with the decrease of sulfur content by13.16% and 24.11%,respectively.The sulfur removals were obtained to 20.72% and 36.76% of total sulfur for two coal samples by HI,respectively.Among the organic assistants,the desulfurizations of 10.53% and 11.07% for Xinyu and Gedui coal samples by microwave desulfurization were achieved by tetrahydronaphthalene and tetrachloroethylene,respectively.
出处
《中国科技论文》
CAS
北大核心
2015年第3期266-269,共4页
China Sciencepaper
基金
高等学校博士学科点专项科研基金资助项目(20130095110008)
国家自然科学基金资助项目(51274199)
江苏高校优势学科建设工程资助项目
关键词
选矿工程
煤炭
有机硫
助剂
微波脱硫
mineral processing
coal
organic sulfur
desulfurizer
microwave desulfurization
