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作 者:庞小肖[1] 张建[2] 屈一新[1] 祝威[2] 王际东[1] 侯影飞[2] 雍兴跃[1]
机构地区:[1]北京化工大学化学工程学院,北京100029 [2]胜利油田胜利勘察设计研究院有限公司,山东东营257026
出 处:《北京化工大学学报(自然科学版)》2011年第5期105-110,共6页Journal of Beijing University of Chemical Technology(Natural Science Edition)
基 金:国家"十一五"科技支撑项目(2008BAC43B03)
摘 要:以含聚油泥微波焚烧残渣作为微波吸收剂加入到含聚油泥中,研究焚烧残渣对含聚油泥的微波热解过程的强化作用。实验结果表明在微波作用下,微波吸收剂的加入对热处理过程特征没有影响,依然分为快速升温、微波干化、烃类物质微波蒸发、微波热解和微波焚烧5个阶段。但是,微波吸收剂的加入能够加速油泥的微波热解过程,当微波吸收剂的加入量为原料的3%时,能够有效的缩短微波热解过程时间近80%,缩短了整个微波热处理过程时间近3/5左右;而当加入量为5%时,微波热解过程时间缩短了约90%,进而整个微波热处理过程时间缩短了2/3,从而达到高效节能的目的。随着微波吸收剂添加量的增加,油泥微波热处理产物冷凝回收液和不凝气的生成速率曲线的基本特征保持不变。然而,随着微波吸收剂的增多,油品的回收率呈先增大后减小趋势,当吸收剂添加量达到3.0%左右时,油品的回收率最高,可达80%左右。The characteristics of an accelerated microwave pyrolysis process for oily sludge containing PAC (polyaluminium chloride) were studied after the oily sludge was mixed with a microwave absorber which was produced during the microwave heat treatment of oily sludge. It was found that the microwave absorber had no effect on the characteristics of the microwave heat treatment process for oily sludge containing PAC. However, when the process was separated into five stages--rapidly-increasing temperature, microwave drying, microwave evaporation of heavy hydrocarbons, microwave pyrolysis, and microwave burning--it was found that the microwave absorber markedly accelerated the microwave pyrolysis of the oily sludge, resulting in a reduced microwave treatment time. When the amount of microwave absorber was 3% , the microwave pyrolysis time of oily sludge was decreased by almost 80% and the overall microwave treatment time was decreased by about 60%. When the amount of microwave absorber was 5% , the microwave pyrolysis time of the oily sludge was decreased by almost 90% and the overall microwave treatment time was decreased by about 67%. The variation in the yields of non-condensed gases or condensed liq- uids with temperature was essentially unchanged when the amount of microwave absorber was varied. The yield of recovered oil increased with increasing amount of microwave absorber below 3% , but the yield decreased with in- creasing amount of microwave absorber in the range 3% to 5%. When the microwave absorber content was 3.0% , the yield of recovered oil reached a maximum of about 80%.
分 类 号:X705[环境科学与工程—环境工程] X741
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