共查询到17条相似文献,搜索用时 312 毫秒
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加氢脱硫降烯烃技术在FCC汽油加氢脱硫及烯烃饱和的同时,很好地减少汽油辛烷值损失问题。介绍了采用HDDO-01催化剂与HDDO-02催化剂组合工艺,对催化裂化汽油进行加氢处理,w(硫)〈50μg/g,汽油辛烷值损失〈2。 相似文献
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《现代化工》2020,(3)
以催化裂化汽油为原料,采用中压加氢实验装置模拟S-Zorb工艺研究催化裂化汽油临氢吸附脱硫的反应规律。使用工业吸附剂考察烯烃分子在临氢吸附脱硫过程中的反应行为,结果发现,汽油中C_5和C_6烯烃主要发生加氢饱和反应,异构化和芳构化反应性能较差,这是导致精制后汽油辛烷值损失的主要原因。为了减少S-Zorb工艺中C_5和C_6烯烃加氢饱和引起的辛烷值损失,以9∶1的质量比混合工业吸附剂和实验室研制的具有异构化及芳构化性能的助催化剂,优化并获得提高汽油辛烷值的工艺条件为:反应温度为430℃、反应压力为2.4 MPa、重时空速为4 h~(-1)、氢油摩尔比为0.30。相较工业吸附剂,精制汽油硫质量分数小于10μg/g,C_5和C_6烯烃减少量降低3.84%,C_5和C_6异构化程度提高0.71,汽油辛烷值损失减少1个单位。 相似文献
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Lina Liang Youzhi Liu Weizhou Jiao Qiaoling Zhang Chao Zhang 《Frontiers of Chemical Science and Engineering》2021,15(5):1229
Octanes in alkylation products obtained from industrial alkylation were studied by batch experiments. More than eight octane isomers were identified and quantified by gas chromatography-mass spectrometry. Based on a classic carbenium ion mechanism, the carbocation transition states in concentrated sulfuric acid catalyzed alkylation were investigated using quantum-chemical simulations and predicted the concentration and octane isomerization products including trimethylpentane and dimethylhexane as well as the formation of heavier compounds that resulted from the oligomerization of octane and butene. The agreement between model calculations and experimental data was quite satisfactory. Calculation results indicated that composition and content of trimethylpentanes in the alkylation products were 2,2,4-trimethylpentane>2,3,3-trimethylpentane>2,3,4-trimethylpentane>2,2,3-trimethylpentane whether the 2-butene or i-butene acts as olefin. Heavier compounds in the alkylate were primarily formed by the oligomerization of dimethylhexane with 1-butene. Hopefully, the carbocation transition state models developed in this work will be useful for understanding the product distributions of octane in alkylation products. 相似文献
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禁用MTBE后的应对措施分析 总被引:2,自引:0,他引:2
甲基叔丁基醚(MTBE)作为汽油辛烷值的改进剂已在美国部分地区受到禁用,并有大规模禁用的可能性。介绍了现有MTBE转产及替代品生产技术及工业应用情况,认为探索研究清洁原料新添加剂的开发是解决问题的理想方法。 相似文献
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第三代降烯烃催化剂GOR-Ⅲ的开发和工业应用 总被引:3,自引:0,他引:3
殷喜平 《化学工业与工程技术》2005,26(3):27-29
针对进一步增强催化剂的降烯烃能力、汽油辛烷值不降或少降、提高重油裂化能力和改善产品的市场需求,开发了第三代降烯烃催化剂GORⅢ并进行了工业应用。工业应用结果表明,采用新型基质材料ASP、改性活性组分制备的GORⅢ催化剂降烯烃能力强,同时能在一定程度上提高稳定汽油的辛烷值,且汽油的诱导期延长,催化汽油性质有所改善。GORⅢ催化剂具有活性高、重油裂化能力强,产品选择性好,轻质油收率高等优点。 相似文献
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CIP-1型裂解催化剂的研究 总被引:2,自引:0,他引:2
CIP-1裂解催化剂是一种多组元分子筛催化剂, 适用于催化裂解Ⅱ型工艺(DCC-Ⅱ)。该催化剂具有在生产高辛烷值汽油的同时多产丙烯及低碳异构烯烃的特点工业应用表明, 在反应温度505℃ 下汽油、丙烯、异丁烯和异戊烯的产率分别为40.98、12.52、4.57和5.78wt%, 在反应温度530℃下分别为38.45、14.43、4.75和5.93wt%. 相似文献
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Recent developments in UOP Platforming are described and discussed. The concept of approach to theoretical yield is utilized to demonstrate progress of Platforming technology. Topics included in this review include: technology efficiency improvements, yield loss with octane increase and benzene management. Possible modifications available as first generation up-grades are discussed as are the latest catalysts and the status of the second generation CCR process. 相似文献