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Revamp vs. Grassroots Unit

If the only consideration is to reduce sulfur, the preferred solution would probably be to add reactor volume as in Case 3, but this assumes that the existing gas recycle system can manage the increased pressure drop and that the diesel yield loss due to cracking is acceptable. It may be necessary to revamp the recycle gas system and the overhead fiactionator. In many cases, the performance of the existing reactor can also be improved by installing state-of-the-art liquid distribution trays and quench mixers.  [Pg.315]

If PAH content, density or cetane number are also important, the refiner may choose to build a new high pressure unit to meet the 50 wppm product sulfur level, i.e. the Case 4 solution. This involves more costly investments and the intelligent use of existing equipment may help reduce overall costs. In this case, incremental investment to meet the 10 wppm sulfur specification in 2009 will be lower. [Pg.315]

International Energy Outlook, March 2002, www.eia.doe.gov/oiaf/ieo/index.html Purvin Gertz, Hart s 4 Annual World Fuel Conference, Brussels, May 19-21,1999 Mochida, L Sakanishi, K. Ma, X. Nagao, S. Isoda, T., Catal. Today, 1996, 29,185. Whitehurst, D.D. Isoda, I. Mochida, l.,Adv. Catal., 1998, 42, 343. [Pg.316]

Knudsen, K.G. Zeuthen, P. Whitehurst, D.D., I EProc. Res., in press. Knudsen, K.G. Whitehurst, D.D Zeuthen, P., A detailed understanding of the inhibition effect of organic nitrogen compounds for ultra deep HDS and the consequences for the choice of catalyst, Presented at the AIChE Spring National Meeting, Atalanta, GA, March 5-9,2000 [Pg.316]

Bingham, F.E. Muller, M. Christensen, P. Moyse, B.M., Performance Focused Reactor Design to Maximise Benefits of High Activity Hydrotreating Catalysts, ERIC Conference, London, Nov. 17-19, 1997. [Pg.316]


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