ZSM-5催化剂加氢脱硫与烯烃芳构化反应研究 |
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引用本文: | 孔飞飞 王海彦 项洪涛 刘冬梅. ZSM-5催化剂加氢脱硫与烯烃芳构化反应研究[J]. 石油炼制与化工, 2016, 47(3): 60-66 |
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作者姓名: | 孔飞飞 王海彦 项洪涛 刘冬梅 |
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作者单位: | 1. 辽宁石油化工大学石油化工学院2. 中国石油抚顺石化公司石油三厂 |
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基金项目: | 辽宁省自然科学基金资助项目;国家自然科学基金资助项目 |
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摘 要: | 采用Na2CO3溶液以及Na2CO3/TPAOH(四丙基氢氧化铵)混合碱溶液对不同硅铝比的ZSM-5分子筛进行处理,用XRD,BET,NH3-TPD,SEM等方法对碱处理前后的ZSM-5分子筛进行表征。结果表明:Na2CO3/TPAOH混合碱处理没有破坏ZSM-5分子筛原晶体形貌,且更利于增加分子筛的比表面积和介孔体积。以FCC汽油为原料,对碱处理后不同硅铝比的ZSM-5分子筛制得的Co-Mo/ZSM-5催化剂进行加氢脱硫及烯烃芳构化性能评价。结果表明,在反应温度为400 ℃、反应压力为2.5 MPa、氢油体积比为300∶1、反应空速为1.5 h-1的条件下,脱硫率为94.2%,芳烃收率为30.82%。
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关 键 词: | 脱硫率 加氢脱硫 芳构化 Na2CO3/TPAOH混合碱 |
收稿时间: | 2015-08-07 |
修稿时间: | 2015-09-25 |
HYDRODESULFURIZATION AND OLEFIN AROMATIZATION OVER Co-Mo/ZSM-5 ZEOLITE TREATED BY MIXED ALKLI |
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Abstract: | ZSM-5 zeolites with different Si/Al ratios were treated by mixed alkali solution of Na2CO3 and TPAOH solution. The zeolites before and after alkali treatment were characterized by XRD, BET, SEM and NH3-TPD techniques. The results showed that the original zeolite frame structure was not destroyed after Na2CO3/TPAOH treatment, and the alkali treatment were beneficial to the increasing of specific surface area, external surface area, average pore size, and pore volume of mesoporous for HZ (80-4-0.2). With FCC gasoline as the raw material, the reaction of hydrogenation desulfurization and aromatic over CoMo/ZSM-5 catalyst prepared by ZSM-5 zeolites before and after alkali treatement were studied. At the certain reaction contion CoMo/HZ(80-4-0.2)showed the most desulfurization rate and the most yield of aromatization. The effect of process conditions on the reaction of hydrogenation desulfurization and aromatization of CoMo/HZSM-5(80-4-0.2) in a small fixed bed reactor was investigated. The results illustrated that when the reaction temperature was 400 ℃, the reaction pressure was 2.5 MPa, the reaction velocity was 1.5 h-1, the desulfurization rate was the higher, 94.2%., and the yield of aromatization was the larger, 30.82%. |
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Keywords: | desulphurization rate hydrodesulfurization aromatization Na2CO3/TPAOH mixed alkali |
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