| 钒污染对CRC－3 FCC催化剂选择性的影响及钝钒剂的研究 |
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| 引用本文： | 李嘉庆,张在龙,周世新,王槐平,蔺五正.钒污染对CRC－3 FCC催化剂选择性的影响及钝钒剂的研究[J].中国石油大学学报(自然科学版),1996(3). |
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| 作者姓名： | 李嘉庆 张在龙 周世新 王槐平 蔺五正 |
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| 作者单位： | 石油大学炼制系 |
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| 摘 要： | 以正庚烷为裂化原料，采用微反活性评价装置和气相色谱分析方法研究了重金属钒对ＣＲＣ－３裂化催化剂选择性的影响，并用Ｘ射线衍射仪测定了经钒污染后催化剂相对结晶度的变化．结果表明，ＣＲＣ－３催化剂上沉积的钒具有脱氢活性，明显降低了催化剂的裂化反应选择性和相对结晶度．向ＣＲＣ－３催化剂中加入高岭土或α－Ａｌ２Ｏ３担载的稀土氧化物（ＲＥ２Ｏ３），可明显提高催化剂的抗钒污染能力．
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| 关 键 词： | 裂化催化剂 重金属污染 钒 钝化作用 |
THE EFFECTS OF VANADIUM ON SELECTIVITY OF CRC-3 FCC CATALYST AND VANADIUM PASSIVATOR |
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| Li Jiaqing, Zhang Zailong, Zhou Shixin,Wang Huaiping ,Lin Wuzheng.THE EFFECTS OF VANADIUM ON SELECTIVITY OF CRC-3 FCC CATALYST AND VANADIUM PASSIVATOR[J].Journal of China University of Petroleum,1996(3). |
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| Authors: | Li Jiaqing Zhang Zailong Zhou Shixin Wang Huaiping Lin Wuzheng |
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| Institution: | University of Petroleum. Dongying. China 257062 |
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| Abstract: | The effects of vanadium on selectivity of CRC-3 FCC catalyst was studied by means of measuring composition change of n-Heptane cracking, products with fixed-bed microreactor-chromatography. The relative crystallinity was determined by X-ray diffraction (XRD). The results show that the vanadium deposited on CRC-3 has a dehydro-activity which decreases the selectivity and relative crystallinity of CRC-3 catalyst. The addition of passivator can apparently improve the vanadium passivation ability of CRC-3 catalyst. |
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| Keywords: | Cracking catalysts Polution of heavy metals Vandium Passivation |
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