1 reply to this topic

Dear All,

I have to go through this topic, and to prepare a draft report within 2 weeks.

can I have you precious help?

Regards,

[kkala]

I have to go through this topic, and to prepare a draft report within 2 weeks. can I have you precious help?

You can start from Nelson (Petroleum Refinery Engineering, 4th ed, McGraw-Hill, 1958) devoting chapter 21 on catalytic cracking and reforming; as well as wekipedia on "catalytic reforming" article.
Nelson reports three catalyst categories, based on Mo, Pt, other. Probably Pt was the most important in 1958, and wikipedia indicates that this is true even today, even though Re (Rhenium) has substituted Pt in some cases, partially (Pt-Re) or totally.
Catalyst (Pt) deactivation occurs by arsenic, sulphur compounds, probably lead (Nelson), as well as nitrogen compounds, chloride compounds, coke deposition in the pores (wikipedia). Arsenic, if any, is removed to about 5 ppb before reforming. Hydro-desulphurization also removes organic nitrogen.
Continuous regenerating part of the catalyst (CCR) is last state of the art, applied to few units worldwide. Most common is to regenerate the catalyst in situ (SRR), batch wise (lasting 2-3 days), every (say) one year. At any case the catalyst has to be replaced by new every (say) 4 years.
It is understood from wikipedia that catalytic reforming concerns only naphtha. You can find more info on WWW.
Above is just introductory; hope the report will hit the target.

Edited by kkala, 14 March 2010 - 08:31 AM.