水热碳化联合化学清洗技术处理油泥砂中总石油烃(C10-C40)  

Treatment of total petroleum hydrocarbons(C10-C40)in oil mud sands by hydrothermal carbonization combined with chemical cleaning technology

作　　者：王聪毅 WANG Congyi(Beijing Institute of Geological Hazard Prevention,Beijing 100120,China)

机构地区：[1]北京市地质灾害防治研究所,北京100120

出　　处：《城市地质》2024年第3期345-352,共8页Urban Geology

基　　金：中国石化企业用地土壤地下水环境初步调查成果项目资助。

摘　　要：油泥砂是在油气勘探开发过程中使用油基钻井泥浆产生的含油岩屑,具有处理难度大、环境风险高的特点,对生态环境和人体健康构成潜在威胁,亟需探索出一种油泥砂资源化的处理方法。文章以天津大港油田油泥砂为样品,通过水热碳化联合化学清洗技术的方法,探索出了一种油泥砂资源化处理的新配方。在实验装置设定为最高温度250℃、压力3~4 MPa,恒温2~3 h时,探究出实验的最佳固液比[油泥砂(g)/清洗液体积(L)]=50∶3,第一脱油催化剂X+第一破乳催化剂Y+复配剂Z(第二脱油催化剂A+第二破乳催化剂B+碱性清洗剂C)=16.7 g·L^(-1)+16.7 mL·L^(-1)+2 g·L^(-1),此新配方作为中试实验结果,可将油泥砂含油率由6.31%左右降低至0.30%以下,总石油烃含量符合GB4284-2018《农用污泥污染物控制标准》,油泥砂固体由危险废物转化为一般固体废物,为实际工程场地中油田油泥砂的大规模处理提供了参考。Oil mud sand is an oily rock debris produced by oil-based drilling mud in the process of oil and gas exploration and development.It is difficult to treat and poses a potential threat to the ecological environment and human health.Therefore,it is urgent to find a treatment method for oil mud sand resource utilization.This paper takes the oil mud sand provided by China Oilfield Services Limited(COSL)as a sample,and explores a new formula for resource utilization of oil mud sand through the method of hydrothermal carbonization combined with chemical cleaning technology.When the experimental device is set at a maximum temperature of 250℃,pressures of 3-4 MPa,and constant temperatures of 2-3 h,the optimal solid-liquid ratio is obtained(oil mud sand(g)/cleaning solution volume(L))=50∶3.First deoiling catalyst X+first demulsification catalyst Y+complex agent Z(second deoiling catalyst A+second demulsification catalyst B+alkaline cleaning agent C)is 16.7 g·L^(-1)+16.7 mL·L^(-1)+2 g·L^(-1).This new formula resulted from the pilot experiment can reduce the oil content of oil mud sand from about 6.31%to below 0.30%.The total petroleum hydrocarbon content now meets the"Control Standards for Agricultural Sludge Pollutants"(GB4284-2018).The solid oil mud sand is transformed from hazardous waste to general solid waste,providing a reference for the large-scale treatment of oil mud sand in actual engineering sites.

关 键 词：油泥砂 总石油烃 水热碳化 化学清洗 

分 类 号：X74[环境科学与工程—环境工程]