Abstract:Sludge-coal combined fuel was produced through moulding-drying process in order to use sludge as fuel. The influence of initial water content, amount of addition of sewage sludge and moulding pressure on characteristics of combined fuel, and drying characteristics at different temperatures was studied. The results showed that, the optimization process conditions were: sludge initial moisture content 60%~70%, and 70%~80% of solid content in moulded sludge-coal. The drop shatter had been less influenced by moulding pressure at range of 10~30MPa. Combined fuel prepared from sludge had good strength of drop shatter, which was the same as commercial briquette level. Compared with sewage sludge, the moulded sludge-coal could be dried more easily and quickly at temperature of room or lower than 100℃. Thus, the rapid dehydration of sewage sludge as well as the use as a potential energy was achieved.
张辉, 胡勤海, 滕玮, 刘苗, 李霞. 污泥-煤复合燃料的成型干化工艺研究[J]. 中国环境科学, 2013, 33(3): 486-490.
ZHANG Hui, HU Qin-Hai, TENG Wei, LIU Miao, LI Xia. The molding and drying characteristics of sludge-coal combined fuel. CHINA ENVIRONMENTAL SCIENCECE, 2013, 33(3): 486-490.