Properties Analysis of Spent Commercial Residue Hydrotreating Catalyst: Surface Property Changes of Spent Catalysts in Commercial Residue Hydrotreating Unit
In this study, the changes of the surface properties of 14 spent catalysts, which were sampled from a commercial residue hydrotreating unit at the end of an operation cycle, were analyzed and compared with the corresponding fresh catalysts. It was found that the changes in the surface properties do not have change laws along the bed height. Furthermore, the pore size, pore volume and surface area of most of the catalysts decreased after reaction and the number of micropores of the spent catalysts increased, due to the fact that the coke and metals deposited in the catalyst to alter the pore distribution. But some catalysts with high coke content, the pore size and pore volume decreased with the increase of surface area, which was a result of the forming of massive micro/mesopores (the pore size is mainly ranged from 3 to 10 nm), when partial soft coke desorbed under the action of the deposited active metals and micro/mesopores were formed in macropores or large mesopores. The surface properties of the spent catalysts were not only related to the deposition amounts, but also to the deposition configurations of the coke and metals on the catalysts.
Al-Dalama, K., & Stanislus, A. (2006). Comparison between deactivation pattern of catalysts in fixed-bed and ebullating-bed residue hydroprocessing unit. Chemical Engineering Journal, 120, 33-42.
Ancheyta, J., Betancourt, G., Centeno, G., & Marroquín, G. (2003). Catalyst deactivation during hydroprocessing of Maya heavy crude oil. (II) Effect of temperature during time-on-stream. Energy Fuels, 17, 462-467.
Galiasso, R., Blanco, R., Gonzalea, C., & Quinteros, N. (1983). Deactivation of hydrodemetallization catalyst by pore plugging. Fuel, 62(7), 817-822.
Jiang, L. J., Weng, Y. B., & Liu, C. H. (2010). Hydrotreating residue deactivation kinetics and metal deposition. Energy Fuels, 24, 1475-1478.
Sun, S. H., & Wang, Y. L. (2005). Metal deposition and distribution on residue hydrotreating catalyst. Petroleum Refinery Engineering, 35, 52-54.
Sun, Y. D., Yang, C. H., & Liu, Z. Y. (2012). Properties analysis of spent catalyst for fixed-bed redidue hydrotreating unit: composition of deposited elements along catalyst bed. Energy Science and Technology, 4, 34-40.
Tailleur, R. G., & Caprioli, L. (2005). Catalyst pore plugging effects on hydrocracking reactions in an ebullated bed reactor operation. Catalysis Today, 109, 185-194.
Van Dongen, R. H., Bobe, D., Van der Eijk, H., & Van Klinken, J. (1980). Hydrodemetallization of heavy residual oils in laboratory trickle-flow liquid recycle reactors. Industrial & Engineering Chemistry Process Design and Development, 19(4), 630-635.
Zhang, H. C., Ma, B., Li, J. B., Liu, S. Q., Geng, J.Y., & Wang, J. F. (2008). Analysis of Coke on Spent Catalysts Used for Residue Hydrotreating Process. Contemporary Chemical Industry, 37, 277-282.
- There are currently no refbacks.
If you have already registered in Journal A and plan to submit article(s) to Journal B, please click the CATEGORIES, or JOURNALS A-Z on the right side of the "HOME".
We only use three mailboxes as follows to deal with issues about paper acceptance, payment and submission of electronic versions of our journals to databases: email@example.com; firstname.lastname@example.org; email@example.com
Copyright © 2010 Canadian Research & Development Centre of Sciences and Cultures
Address: 730, 77e AV, Laval, Quebec, H7V 4A8, Canada
Telephone: 1-514-558 6138