淀粉改善焦炭热态性能及其机理研究  

STUDY OF INHIBITION AND MECHANISM OF STARCH ON IMPROVING COKE THERMAL PROPERTY

作　　者：张泽志[1,2] 王建设[3] 宋成盈[3] 赵建宏[3] 王留成[3] 王福安[3] 

机构地区：[1]郑州大学化工与能源学院 [2]河南教育学院化学系,郑州450001 [3]郑州大学化工学与能源学院,郑州博士450001

出　　处：《煤炭转化》2010年第4期40-42,共3页Coal Conversion

基　　金：河南省重大公益性科研项目(081100911800)

摘　　要：采用淀粉作为新型焦炭劣化抑制剂负载于焦炭表面以改善焦炭的热态性能,并用电子扫描电镜对焦炭结构和形貌进行表征,初步探讨了淀粉改善焦炭热态性能的机理.结果表明,喷洒淀粉溶液后焦炭热态性能指标得到明显改善;1.0%淀粉溶液能使焦炭反应性CRI降低4.08%,反应后强度CSR提高3.99%;焦炭表面气孔直径和深度显著减小,CO2对焦炭的侵蚀劣化作用减弱,这为改善焦炭性能指标开拓了新途径.To improve the thermal property of coke,the inhibition to coke deterioration by spraying starch as a new deterioration inhibitor was investigated.The structure and morphology of coke were scanned to explain starch＇s inhibition mechanism to coke by SEM.It was found that the CRI decreased by 4.08% and the CSR improved by 3.99% when spraying 1.0% starch.SEM scanning results showed that both the coke surface pore diameter and the depth had decreased sharphy,it helps to reduce CO2 to erode coke.

关 键 词：焦炭 淀粉 热态性能 劣化抑制剂 机理 

分 类 号：TQ520.6[化学工程—煤化学工程]