Environmental Valuation & Cost-Benefit News
A preliminary process design and economic assessment of a catalyst rejuvenation process for waste disposal of refinery spent catalysts
01/29/08
08:13:12 pm, by damageva 
, 195 words, 230 views 
Categories: Energy, Contaminated Properties, Asia, Academic Study/Journal Article, Hazardous Waste, Costs and Benefits
A preliminary process design and economic assessment of a catalyst rejuvenation process for waste disposal of refinery spent catalysts
Abstract: Spent hydroprocessing catalysts from refineries have been classified as hazardous solid waste by the United States Environmental Protection Agency (USEPA), refiners must find a viable but economical solution to solve this serious environmental issue. Catalyst rejuvenation is an attractive option for minimizing the environmental problems associated with spent catalysts. In this study, a preliminary design for such a process and the corresponding economic analysis are performed to assess the proposed catalyst rejuvenation process for metal-fouled spent catalysts generated in residue hydroprocessing units. The scenarios used in the economic assessment are based on three options of process synthesis and two operator modes. It is found that the option of rejuvenating medium and lightly fouled spent catalyst produced by the refinery will be the best solution for refiners, both environmentally and economically.
Keywords: Hazardous waste; Hydroprocessing; Spent catalyst recycling; Rejuvenation; Economic assessment; Waste utilisation
by Meena Marafi, Antony Stanislaus and Ezra Kam all of Petroleum Refining Department, Petroleum Research and Studies Center, Kuwait Institute for Scientific Research, P.O. Box 24885, Safat 13109, Kuwait; Telephone: +965 3980499; fax: +965 3980445.
Journal of Environmental Management via Elsevier Science Direct www.ScienceDirect.com
Volume 86, Issue 4; March, 2008; Pages 665-681
http://dx.doi.org/10.1016/j.jenvman.2006.12.017
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