摘要
石油焦比煤具有更高的热值,同时价格低廉,利用石油焦浆气化制备合成气具有很大的优势。石油焦浆气化的第1步是制备水焦浆,采用煤气化黑水作为石油焦浆的稳定剂,不仅节约了稳定剂的成本,还解决了黑水的处理和对环境的污染问题。文中通过逐步提高石油焦浆制备过程中黑水与去离子水的添加比例,采用干磨湿混的方式制浆,测定了石油焦浆在剪切应力为100 s-1时的黏度,并观察其流动性及稳定时间等各项指标,考察了黑水对石油焦浆稳定性的影响。结果表明:黑水能够有效提高石油焦浆的稳定性,提高屈服应力。石油焦添加黑水最高可制备出固体颗粒质量分数为73%的水焦浆,其稳定性和黏度、流动性均满足工业气化用浆要求。
Petroleum coke has higher calorific value and lower price compared with coal.It has great advantages that petroleum coke-water slurry is used to prepare syngas.The first step of gasification with petroleum coke-water slurry is to prepare the coke-water slurry.With chilling black water of coal gasification as stabilizer of petroleum coke-water slurry,it can not only save the cost of stabilizer,but also resolve the problems of treating black water and environmental pollution.The way of producing petroleum coke-water slurry is dry grinding and humid mixing;the adding ratio of black water to deionized water is gradually increased;and the viscosity of the slurry was determined when the shear rate was 100 s-1.The liquidity and stable time of the slurry were observed.The effect of black water as stabilizer on the slurry properties of petroleum coke-water was investigated.The results show that black water can effectively improve the stability and yield stress of petroleum coke-water slurry.Petroleum coke added with black water can produce the coke-water slurry with solid mass fraction as high as 73%,and its stability,viscosity and liquidity can satisfy the demand of slurry for gasification in industry.
出处
《化学工程》
CAS
CSCD
北大核心
2011年第7期60-64,共5页
Chemical Engineering(China)
基金
上海市优秀学科带头人资助计划(08XD1401300)
"863"计划项目(2008AA05Z310)
关键词
石油焦
黑水
稳定剂
成浆性
petroleum coke
black water
stabilizer
slurry properties
