氯氧镁水泥对油泥砂固化/稳定化研究  

Solidification/Stabilization of Oily Sludge Using Magnesium Oxychloride Cement

作　　者：李鸿坤 贺函 梁纪灵 王禄 张颜 LI Hongkun;HE Han;LIANG Jiling;WANG Lu;ZHANG Yan(Liaoning Petrochemical University,Liaoning Fushun 113001,China)

机构地区：[1]辽宁石油化工大学土木工程学院,辽宁抚顺113001

出　　处：《辽宁化工》2024年第8期1203-1206,共4页Liaoning Chemical Industry

基　　金：辽宁省大学生创新创业项目(项目编号:S202210148025);辽宁石油化工大学博士启动基金项目(项目编号:2016xJJ-031)。

摘　　要：为实现油泥砂的资源化,以氯氧镁水泥(MOC)固化油泥砂用作建筑材料。考察了MOC组成(MgO与MgCl_(2)物质的量比R_(n))和油泥砂与MOC质量比(R_(m))对固结体的平衡抗压强度的影响。结果表明:MOC可有效固化油泥砂,抗压强度随油泥砂含油量增大而降低,随R_(n)和R_(m)增大呈先增大后降低趋势,在R_(n)=2.0~3.0和Rm=1.2~1.6时出现最大值,在所研究条件下固结体的最大平衡抗压强度可达11.20 MPa以上,满足《非烧结垃圾尾矿砖》(JC/T 422—2007)MU10级力学强度要求,MOC可将油泥砂中95%以上的油分稳定在固结体中,可有效降低油泥砂对土壤的二次污染,为油泥砂用作建筑材料提供了理论基础。To realize the resource disposal of oily sludge from oil field,magnesium oxychloride cement was used to solidify it.The effects of MOC composition(R_(n) the molar ratio of MgO to MgCl_(2))and the mass ratio of oily sludge to MOC(R_(m))on the equilibrium compressive strength of the consolidated body were investigated.The results showed that MOC could effectively solidify oil sludge sand,and the compressive strength decreased with the increase of oil content of oily sludge sand,and increased first and then decreased with the increase of R_(n) and R_(m),and reached the maximum when R_(n)=2.0~3.0 and R_(m)=1.2~1.6.Under the studied conditions,the maximum equilibrium compressive strength of the consolidated body could reach above 11.20 MPa,meeting the mechanical strength requirement of MU10 in Non-fired rubbish gangue brick(JC/T 422—2007),and MOC could stabilize more than 95%of the oil in the oil sludge sand in the consolidated body,effectively reducing the secondary pollution of the oil sludge sand to the soil.This result provides a theoretical basis for the oily sludge sand to be used as a building material.

关 键 词：油泥砂 固化/稳定化 无侧限抗压强度 氯氧镁水泥 

分 类 号：X741[环境科学与工程—环境工程]