摘要
基于石油石化污染物控制与处理国家重点实验室提出的油泥水热处理的新方法,构建无搅拌结构的水热反应器数学模型,以饱和水蒸气-含油污泥为介质分析了无搅拌结构反应器内蒸汽和油泥的混合过程,考察了蒸汽进气速率、环管分布器喷孔的孔径对反应器内气含率、液相速度分布的影响。结果表明,随着进气量的增加,反应器内液相的流动性趋好,边壁处的气相分布得到了改善;喷孔的孔径影响反应器内气相的整体分布,孔径越大,反应器内气相的分布趋优,但对边壁处的液相影响不大。当喷孔的孔径为3.5 mm,开孔数为8个时,反应器内整体气含率分布较好。
Based on the new method of oil sludge hydrothermal treatment proposed by the State Key Laboratory of Petroleum Pollution Control,a mathematical model of hydrothermal reactor without the stirring structure was established.The mixing process of steam and oil sludge in a non-stirred reactor was analysed with saturated steam oily sludge as the medium.The effects of steam inlet gas flow rate and inlet pipe diameter on gas holdup and liquid phase velocity distribution in the reactor were investigated.The results showed that with the increase of inlet gas flow rate,the liquid phase fluidity in the reactor became better,and the gas phase distribution at the side wall was improved;The inlet pipe diameter affects the overall distribution of gas phase in the reactor.The larger the inlet pipe diameter,the better the distribution of gas phase in the reactor,but it has little effect on the liquid phase at the side wall.The overall gas holdup distribution in the reactor is better when the inlet pipe diameter is 3.5 mm and the number of openings is 8.
作者
宋健斐
仝坤
聂凡
贾智凯
李思源
Song Jianfei;Tong Kun;Nie Fan;Jia Zhikai;Li Siyuan(State Key Laboratory of Petroleum Pollution Control,Beijing 102246,China;College of Mechanical and Transportation Engineering,China University of Petroleum,Beijing 102249,China)
出处
《环境工程》
CAS
CSCD
北大核心
2023年第S02期1047-1051,共5页
Environmental Engineering
基金
石油石化污染物控制与处理国家重点实验室开放课题(PPC2020009)
