摘要
用氨水作沉淀剂与一定量的Fe2+和Fe3+反应制备了具有磁性的碱性氮脱除剂,研究了在外加磁场作用下其对柴油中碱性氮的脱除效果。结果表明,外加磁场的存在有利于碱性氮化合物在磁性物质上的吸附,可以大大提高碱性氮的脱除率。对碱性氮质量分数为65.6μg/g的模拟油样品,在反应温度为0℃、反应时间为10min、剂油质量比为0.06的条件下,在无外加磁场和螺线管电流强度为5A时,其碱性氮的脱除率分别为83.3%和94.0%。对碱性氮含量为45.4μg/g的实际柴油样品,在反应温度为0℃、反应时间为10min、剂油质量比为0.06的条件下,在无外加磁场和螺线管电流强度为5A时,其碱性氮的脱除率分别为72.0%和90.1%,油样的回收率分别为98.1%和98.9%。
The magnetic adsorbent for separating basic nitrogen compounds（BNC）in diesel fuel was prepared by precipitation method using ammonia as precipitator to react with Fe^2＋ and Fe^3＋. The BNC removal rates under various conditions were determined and the influence of additional magnetic field on the removal rate was studied. The results showed that the presence of additional magnetic field could promote the adsorption of BNC to the surface of magnetic adsorbent, thus, the removal of BNC was enhanced. Under the conditions of a reaction temperature of 0 C ,a reaction time of 10 min,a mass ratio of adsorbent to oil of 0.06,when treating a model oil with a BNC concentration of 65.6μg/g,the BNC removal rates were 83.3% and 94.0% for base case and with additional magnetic field（solenoid electric current intensity of 5A）, respectively. At the same treating conditions, when a diesel fuel sample with a BNC concentration of 45.4 μg/g was tested,the BNC removal rates were 72.0% and 90.1% for base case and with additional magnetic field（solenoid electric current intensity of 5.0A）,respectively; and the oil recovery rates were 98.1% and 98.9% ,respectively.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2007年第11期1-5,共5页
Petroleum Processing and Petrochemicals
基金
中国石油化工集团公司合同项目(X501022)
北京化工大学优秀青年教师资助项目(QN0624)
关键词
分子磁强化
碱性氮
柴油
脱除
molecular magnetism aggrandizement
basic nitrogen
diesel oil
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