降低FCC再生烟气NOx排放助剂的开发 |
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引用本文: | 宋海涛,田辉平,朱玉霞,达志坚.降低FCC再生烟气NOx排放助剂的开发[J].石油炼制与化工,2014,45(11):7-12. |
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作者姓名: | 宋海涛 田辉平 朱玉霞 达志坚 |
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作者单位: | 中国石化石油化工科学研究院 |
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基金项目: | 中国石油化工股份有限公司合同项目(112120、ST114111) |
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摘 要: | 开发了用于降低FCC再生烟气NOx排放的RDNOx系列助剂(I型和II型助剂)。I型助剂为非贵金属助剂,主要是通过催化CO对NOx的还原反应以降低NOx排放;II型助剂为贵金属助剂,是用于替代传统Pt助燃剂,在等效助燃CO的同时减少NOx的生成。两类助剂可以单独使用,也可以同时使用。助剂性能评价结果表明,在催化剂藏量中加入0.5%~0.9%的II型助剂与2%~4%的I型助剂,可以在基本不影响FCC产品分布的情况下,使再生烟气NOx排放量降低50%~64%。
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关 键 词: | 催化裂化 再生烟气 NOx 助剂 产物分布 |
收稿时间: | 2014-04-28 |
修稿时间: | 2014-05-27 |
DEVELOPMENT OF DECREASING NOx EMISSION ADDITIVES FOR FCC FLUE GAS |
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Abstract: | Reducing NOx emission additives for FCC flue gas (RDNOx,types I and II) were developed. RDNOx-I, a non-noble metal additive, is used to reduce NOx emission through catalyzing the reaction of NOx reduction. RDNOx-II, a noble metal additive, is used to substitute Pt based CO promoter, as it can promote CO combustion and decrease NOx formation at the same time. RDNOx-I and II can be used separately or simultaneously. The evaluation results show that when 0.5%-0.9% of RDNOx-II and 2-4% of RDNOx-I are applied, NOx emission in flue gas is reduced by about 50%-64%, while no negative influence on FCC product distribution is observed. |
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