摘要
针对油基岩屑处理过程中的大颗粒部分(0.5—1 cm),研究了以"热水洗+臭氧氧化"为核心的联合工艺的处理效果,并分别对热水洗、臭氧氧化环节的工艺参数进行了优化.结果表明,在最优条件下,经过处理后的油基岩屑的含油率可由15.8%降低到0.24%,达到了GB 4284-2018中规定的处置要求,处理过程中回收的油分可重新用于配制钻井液.通过对油基岩屑固相的表征发现,其具备臭氧催化氧化催化剂的明显特征,是一种天然的臭氧催化氧化催化剂,并从反应动力学角度对臭氧氧化环节的反应特性进行了定量分析.结果表明,其满足准一级反应动力学特征,反应活化能为14.421 kJ·mol-1.以"热水洗+臭氧氧化"为核心的联合工艺为大颗粒油基岩屑的无害化、资源化处理提供了一种参考.
One key problem during the treatment of oil-based cuttings,i.e.,large particles(0.5—1 cm)treatment,needs to be solved.A combined process of"hot water washing+ozone oxidation"was used for the treatment of the large particle oil-based cuttings,and the parameters of the hot water washing and ozone oxidation process were optimized respectively.Under the optimal conditions,the oil content of the treated oil-based cuttings was reduced from 15.8%to 0.24%,which met the disposal requirements stipulated in GB 4284—2018,while the oil recovered in the process could be reused to prepare fresh drilling fluid.Through the characterization of the solid phase of the oil-based cuttings,it was found that the solid possessed the characteristics of ozone oxidation catalyst and was a natural ozone oxidation catalyst.The reaction kinetics of ozone oxidation was analyzed quantitatively,and the result showed that it satisfied the kinetic characteristics of the pseudo-first order reaction,while the reaction activation energy was 14.421 kJ·mol-1.The combined process with"hot water washing+ozone oxidation"provides a new technology for the harmless and resourceful treatment of large particle oil-based cuttings.
作者
陈红硕
刘阳生
CHEN Hongshuo;LIU Yangsheng(College of Environmental Sciences and Engineering,Peking University,Beijing,100871,China)
出处
《环境化学》
CAS
CSCD
北大核心
2020年第2期388-396,共9页
Environmental Chemistry
基金
国家自然科学基金(21077002)资助。
关键词
热水洗
臭氧氧化
大颗粒油基岩屑
反应动力学
活化能
清洗剂
hot water washing
ozone oxidation
large particle oil-based cuttings
reaction kinetics
activation energy
cleaning agents
作者简介
通讯联系人:刘阳生,Tel:15911089010,E-mail:ysliu@pku.edu.cn
