KEY TECHNOLOGIES FOR EFFICIENT CLEAN DIESEL PRODUCTION AND COMMERCIAL APPLICATIONS

Abstract

Abstract: Faced with challenges from the national dual quality requirements for low-sulfur and low-aromatics diesel, based on the in-depth understanding of the deactivation mechanism of diesel hydroprocessing catalysts together with the reaction chemistry of hydrodesulfurization and hydrodearomatization, the new catalyst preparation technology was developed by inventing the assembly technology of high-performance active phase and the stabilization technology of well-dispersion active phase. Two highly-active and well-stable hydrogenation catalysts were developed with above preparation technology, along with the RTS (Remove Trace Sulfur) process invention, which aims at directionally strengthening the targeted reactions, and the problem for industrial units to achieve ultra-deep hydrodesulfurization, deep hydrodeacromatization and long operation cycle simultaneously was solved. Innovations in both catalyst and process brought the formation of key technologies for efficient clean diesel production, which can realize the long term stable production of China V / China VI standard diesel with low-cost, high-efficiency. Until now, these technologies have been successfully applied in 36 sets of commercial units with a total processing capacity of more than 50 Mt/a, providing technical supports for the rapid upgrading of China's fuel oil quality.

Key words: diesel, hydroprocessing catalyst, RTS process, ultra-deep hydrodesulfurization, deep hydrodearomatization

References

[1] 北京市环境保护局，北京市PM2.5来源解析，新闻通稿第35期，2018年5月14日.
[2] 李大东. 加氢处理工艺与工程（第二版）[M]. 北京：中国石化出版社，2016.
[3] 李大东，炼油工业：市场的变化与技术对策[J]，石油学报(石油加工)，2015，31（2）：208-217.
[4] Nie H., Li H.F., Yang Q.H., et al. Effect of structure and stability of active phase on catalytic performance of hydrotreating catalysts[J], Catalysis Today, 2018, 316: 13-20.
[5] 张乐，李明丰，丁石，等. 原料性质对柴油超深度加氢脱硫NiMoW/Al2O3催化剂活性稳定性的影响[J]，石油学报（石油加工），2017, 33(5)：834-841.
[6] 张乐，李明丰，聂红，等. 高性能柴油超深度加氢脱硫催化剂RS-2100和RS-2200的开发和工业应用[J]，石油炼制与化工，2017，48(6)：1-6.
[7] 丁石，高晓冬，聂红，等. 柴油超深度加氢脱硫(RTS)技术开发[J], 石油炼制与化工，2011，42 (6)：23-28.
[8] Lauritsen J.V., Kibsgaard J., Olesen G.H., et al. Location and coordination of promoter atoms in Co- and Ni-promoted MoS2-based hydrotreating catalysts[J], Journal of Catalysis, 2007, 249: 220-233.
[9] Martin C., Lamonier C., Fournier M., et al. Evidence and characterization of a new decamolybdocobaltate cobalt salt: an efficient precursor for hydrotreatment catalyst preparation[J], Chemistry of Materials, 2005, (17): 4438-4448.
[10] Li M.F., Li H.F., Jiang F., et al. Effect of surface characteristics of different alumina on metal-support interaction and hydrodesulfurization activity[J], Fuel, 2009, 88: 1281-1285.
[11] 聂红，李会峰，龙湘云，等, 络合制备技术在加氢催化剂中的应用[J]，石油学报（石油加工），2015, 31(2): 250-258.
[12] 邵志才，高晓冬，李皓光，等. 氮化物对柴油深度和超深度加氢脱硫的影响Ⅰ.氮化物含量的影响[J]，石油学报（石油加工），2006，22(4)：12-17.
[13] 邵志才，聂红，高晓冬. 氮化物对柴油深度和超深度加氢脱硫的影响 Ⅱ.工艺条件和催化剂的影响[J]，石油学报（石油加工），2006，22(5)：14-19.
[14] 王倩，龙湘云，聂红. 氮化物对NiW/Al2O3上DBT和4,6-DMDBT加氢脱硫反应活性的影响[J]，石油炼制与化工，2011，42(4)：30-34.
[15] Han W., Nie H., Long X.Y., et al. A study on the origin of the active sites of HDN catalysts using alumina-supported MoS3 nanoparticles as a precursor[J], Catalysis Science & Technology, 2016, 6: 3497-3509.