氧化吸附法深度脱除MTBE产品中硫化物研究.pdf

石油与天然气化
CHEMICAL ENGINEERING OF OIL &. GAS
2017
OIL AND GAS TREATMEN AND PROCESSING
氧化吸附法深度脱除MTBE产品中硫化物研究
王胜强王庆2于宏兵
1.南开大学环境科学与工程学院2.新疆师范大学化学化工学院
油气处理与加工
摘要甲基叔丁基醚(MTBE)是我国汽油中一种重要的调和组分。降低MTBE产品中硫化物
含量,可促进汽油的清洁燃烧和环境保护。采用MTBE为溶剂分别配制了以ニ甲基二硫醚(DMDS)、
甲基叔丁基硫醚(TBMS)为模型硫化物的含硫MTBE产品样品。脱硫剂由Pd/C、异丙醇、氧化钠和
去离子水组成。首先,采用N2吸附等温线、TEM、XRD对Pd/C结构特征进行了表征。结果显示,
Pd/C的比表面积为1836m2/g,孔容为0.98cm3/g,根据其I型吸附等温线可知,其绝大部分孔为微
孔。由Pd/C的TEM图可以看出,Pd的纳米颗粒比较均匀地分布于活性炭材料上,Pd金属纳米粒子
直径约3~5nm。XRD图显示Pd纳米晶体颗粒的(111)、(200)、(220)和(311)典型晶面存在。脱硫实
验结果显示,采用间歌反应器在50℃下,脱硫剂可在1h内将MTBE产品中的硫质量分数从150g/g
降至10pg/g以下,从而得到低含硫MTBE产品,脱硫剂的脱硫效果得到较好的验证。PdC既作为原
位产生过氧化氢的催化剂,又是吸附砜类硫化物的吸附剂,洗脱再生后仍具有较好的催化和脱硫性能。
关键词甲基叔丁基醚脱硫氧化吸附二甲基二碗醚甲基叔丁基碗醚
中图分类号:TE624.5;TQ028文献标志码:ADOI:10.3969/j.issn.1007-3426.2017.01.002
Deep removal of sulfur compounds from MTBE products
based on oxidative adsorption
Wang Shenggiang!, Wang Qing"2, Yu Hongbing
1. College of Environmental Science and Engineering of Nankai University, Tianjin, China
2. School of Chemistry and Chemical Engineering of Xinjiang Normal University, Urumqi, Xinjiang, China
Abstract: Methyl tert-butyl ether(MTBE) is an important blending component of gasoline ir
China. Reducing the sulfur compounds contents in MTBE products can promote clean burning of
gasoline and environmental protection. The MTBE products samples containing sulfur compound
were prepared with dimethyl disulfide (DMDS)and tert-butyl methyl sulfide (TBMS) using MTBE as
solvents, respectively. The desulfurizer was composed of Pd/C, isopropanol, sodium hydroxide and
deionized water. The Pd/C structure characteristics was characterized by N2 adsorption isotherm
TEM and XRD. The feature of type I isotherm confirmed that the existence of micropores in Pd/C
catalyst and the BET surface area of Pd/C was 1 836 m"/g and the pore volume was 0.98 cm/g
respectively. According to the adsorption isotherm, it could be concluded that most of the pores are
micropores. The average particle size of Pd crystal particle shown in TEM images was about 3-5 nm
and the crystal particles of Pd were distributed uniformly in activated carbon which could strengthen
the catalytic efficiency and result in strong combination between Pd and activated carbon. Four typical
基金项目:国家自然科学基金(缩聚反应/吸附法深度脱除燃油中咔唑类氮化物研究)“21006053”;南开大学2015年校级教学
改革项目(以创新研究与训练为导向的公选课课程建设研究)“ZB160052”;天津市教育系统调研课题项目(校企合作育人调研项目)
“普通课题14”。
作者简介:王胜强(1977~),男,山东平原人,南开大学讲师,主要从事燃料油脱硫与工业清洁生产技术研究工作。E-mail
sheng(②126.com
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