FUEL 195 |
| The objective of selective hydrodesulfurization (SHDS) technologies, such as the UOP SelectFiningTM, is to reduce the sulfur content of the FCC naphtha while simultaneously maintaining its octane value by minimizing olefin saturation. As a result, selectivity is a key catalyst performance criterion. It has been observed that selectivity is impacted by catalyst particle size with smaller particles exhibiting greater selectivity. Unfortunately, practical considerations, e.g. pressure drop, limit the application of this observation in commercial operations. It is possible to overcome these limitations by the use of layered catalyst technology. A mathematical simulation of the intra-particle temperature and concentration gradients indicated that a layered catalyst with an active shell and inert core would have a selectivity advantage over conventional catalysts. The selectivity advantage of layered catalysts has also been demonstrated in pilot plant experiments. |
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Ultraclean Transportation Fuels
8:25 AM-12:00 PM, Wednesday, April 9, 2008 Morial Convention Center -- Rm. 238, Oral
Division of Fuel Chemistry |