废白土无害化处理中的高温热解法研究  

Research on High Temperature Pyrolysis Method for Harmless Treatment of Waste White Soil

作　　者：田世豪 田永林 Tian Shihao;Tian Yonglin(Jiangsu Hengmao Renewable Energy Co.,Ltd.,Taizhou 225502,China)

机构地区：[1]江苏恒茂再生能源有限公司,江苏泰州225502

出　　处：《皮革制作与环保科技》2024年第12期119-121,124,共4页Leather Manufacture and Environmental Technology

摘　　要：为了解决工业生产中含润滑油废白土带来的环境污染问题,本文以含润滑油废白土为原料,探索和优化对废白土进行无公害处理的工艺条件,利用二段高温热解的方法,研究了煅烧温度、保温时间和载气量等条件对废白土蒸油率的影响。研究结果表明:在氮气氛围下,焙烧温度为400℃,保温时间为2 h时,蒸油率可达39%。其中不凝性气体(CH_(4)、NH_(3)、N_(2)H_(4)、C_(3)H_(8)、C_(4)H_(10)等)占15%左右,可回收油量约为24%;当焙烧温度为800℃,保温时间为2 h时,蒸油率可达7.47%,其中有C_(3)H_(8)、CH_(4)及其他少量碳氢化合物产生。通过该方法处理后的废白土基本能够达到国家非危废物的排放标准,并且能够回收原废白土中20%左右的含油量。本研究为企业的进一步中试开发提供了废白土无害化处理的方法依据及基础数据。In order to solve the environmental pollution problem caused by waste clay containing lubricating oil in industrial production,this article takes waste clay containing lubricating oil as raw material,explores and optimizes the process conditions for pollutionfree treatment of waste clay,and uses the two-stage high-temperature pyrolysis method to study the effects of calcination temperature,insulation time,and carrier gas volume on the oil evaporation rate of waste clay.The research results show that under nitrogen atmosphere,when the calcination temperature is 400℃and the insulation time is 2 hours,the oil evaporation rate can reach 39%.Non condensable gases(CH_(4)、NH_(3)、N_(2)H_(4)、C_(3)H_(8)、C_(4)H_(10),etc.)account for about 15%,and the recoverable oil amount is about 24%;When the roasting temperature is 800℃ and the holding time is 2 hours,the oil evaporation rate can reach 7.47%,with C_(3)H_(8)、CH_(4),and other small amounts of hydrocarbons produced.The waste clay treated by this method can basically meet the national non-hazardous waste discharge standards,and can recover about 20%of the oil content in the original waste clay.Providing a method basis and basic data for the harmless treatment of waste clay for further enterprise pilot development.

关 键 词：废白土 焙烧温度 蒸油率 氮气氛 

分 类 号：TS5[轻工技术与工程—皮革化学与工程]