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Hydrocracker feed specification

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LEMCS

LEMCS

Petroleum
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Jul 14, 2009
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I wonder about hydrocracker (Hydrocracking Process) feedstock specification. Does anybody know practical values to be assumed for HCC run-length of 2 years ? Feedstock to be considered is vacuum gasoil and coker gasoil.
 
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From my old notes the influence of nitrogen in feedstock on zeolite-based catalysts was as follows:

ppm cat aging, oC/day

650 to 750 0.05 to 0.06
~1200 0.14

It appears that ammonia may neeutralize acid sites.
 
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