摘要
以油页岩三种工艺过程产生的残渣(油页岩固体热载体法干馏半焦、油页岩抚顺炉法干馏半焦和油页岩电厂循环流化床细渣)为研究对象,结合不同煅烧温度下的XRD特征研究了煅烧温度、煅烧时间和反应粒度对SiO2利用率的影响规律.结果表明,只有油页岩固体热载体半焦需要煅烧活化,850℃下煅烧0.5 h可获得SiO2最大碱浸出率为80%;抚顺炉干馏半焦和热电厂灰渣勿需煅烧活化,其SiO2利用率分别约为75%和60%.
The aim of the present study was to experimentally investigate the influence of calcination on SiO2 utilization ratios of oil shale residues. Three kinds of residues were selected from different processing methods including retorting carbocoal by solid heat carrier method, retorting carbocoal of Fushun-type and fine residues from a circulating fluidized-bed of a power sta- tion. Effects of calcination temperature, calcination time and particle size were analyzed with XRD patterns. Results show that a maximum SiO2 leaching rate of 80% can be received from the carbocoal by solid heat carrier method after calcination activation at 850℃ for 0.5 h, while those for the carbocoal of Fushun-type and residues from a power station are 75% and 60% respectively, without the need of calcinations.
出处
《煤炭转化》
CAS
CSCD
北大核心
2011年第2期91-96,共6页
Coal Conversion
基金
辽宁省自然科学基金资助项目(20052194)
关键词
页岩残渣
煅烧活化
SiO2利用率
XRD
oil shale residue,calcination, utilization ratio of SiO2,XRD pattern
