High Dispersion Trays for Hydrotreating 1

sshep · Jun 25, 2004

Does anyone in this forum have knowledge of improved distributor design for conventional hydrotreating reactors(mixed phase, downflow, 9ftDia x 45ftT-T)? Our application is to treat kerosene streams for a downstream chemical process for which S and N are poisons.

We are considering a change-out of our conventional trays to get some additional reactor volume and any better performance which is possible from such a change. Currently I am inquiring into Shell's High Dispersion (HD) trays. I have a concern that the cost to benifit ratio of a change-out could be overstated.

If anyone has either installed or considered installing this type hardware, I would be most interested in your comments and experience. Thanks, sshep

22082002 · Jul 4, 2004

You can also try Haldor Topsoe VLT trays.
Again these tray would be expensive, but you are assured of very good V+L distribution on the entire bed,(+/-3°C or even better). I experienced +/-1°C when Guarantee Test Run was done. Only one in 37 RTD's deviated by 5°C otherwise it was +/-1°C.
Topsoe would give longer life, if they have VLT's as distributor/redistributor.In some cases, it can range from 10-30% extended life cycle.
Talk to them, they can also give you a competetive adavantage.
Regards,
SAA

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High Dispersion Trays for Hydrotreating 1

sshep

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22082002

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