摘要
选取具有代表性的石化污泥、城市污泥和造纸污泥,借助旋转黏度计考察污泥改性剂的种类和添加量对污泥焦浆流变特性和稳定性的影响,从而获得制备高浓度污泥焦浆的工艺参数。结果表明:选用Ca(OH)2、KOH、NaOH对3种污泥进行改性可以制备出满足工业应用的污泥焦浆;石油焦的单独成浆浓度可达70%以上,并且浆体表现出剪切增稠的现象,但是随着3种改性污泥添加量的增加,浆体逐渐由胀塑性流体转变为假塑性流体。在3种改性污泥添加量为石油焦干基重量的12%时,石化污泥焦浆、城市污泥焦浆和造纸污泥焦浆的最大成浆浓度分别为62%、62%和64%。随着污泥添加量的增加,污泥焦浆的稳定性明显提高,污泥完全可以代替石油焦单独成浆所需的稳定剂。
The typical petrochemical sludge,sewage sludge and paper mill sludge were used to investigate the effects of types and additive amounts of modified agents on the rheological properties and stability of coke-sludge slurry（CSS） by means of rotational viscometer to obtain process parameters of preparing high concentration of sludge coke slurry.The results show that three kinds of coke-sludge slurries,modified by Ca（OH）2,KOH,NaOH can satisfy the demand in industrial application.The concentration of the coke-water slurry（CWS） could achieve above 70% without stabilizer and the slurry appears shear-thickening behavior.With the increase of adding amount of sludge,the CSS gradually converts from the dilatant fluid into pseudoplastic fluid.The maximum concentration of CSS is 62%,62% and 64% respectively when the additive amounts of sludge are 12% of the petrochemical coke.With the increase of additive amount of sludge,the stability of the CSS increases significantly,and sludge can completely replace the stabilizer using in coke-water slurry.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2012年第35期59-65,共7页
Proceedings of the CSEE
基金
国家重点基础研究发展计划项目(973项目)(2010CB227001)
国家自然科学基金项目(51206028)
中国博士后科学基金项目(2012M520971)
浙江大学能源清洁利用国家重点实验室开放基金项目(ZJUCEU2010010)~~
关键词
石化污泥
城市污泥
造纸污泥
石油焦
共成浆性
petrochemical sludge
sewage sludge
paper mill sludge
petroleum coke
co-slurryability
