Catalyst separation method reduces Platformer turnaround costs
- CRI International Inc., Houston, TX (United States)
- Fina Oil and Chemical Co., Port Arthur, TX (United States)
- UOP, Des Plaines, IL (United States)
A catalyst separation technology that segregates catalyst particles by density has proved successful in recovering CCR (continuous catalyst regeneration) Platforming catalyst that had been contaminated with heel catalyst, non-flowing catalyst. UOP`s CCR Platforming process converts naphtha to high-octane gasoline components and aromatics for petrochemical use. The reforming reactions take place in a series of Platforming reactors loaded with platinum-containing reforming catalyst. CCR Platforming technology incorporates a moving catalyst bed in a system that permits addition and withdrawal of catalyst from the reactor while the unit is operating. As the catalyst circulates through the reactors, it builds up typical carbon levels of 5%. Over time, the heel catalyst will build up carbon levels as high as 50%. When the catalyst is unloaded, heel catalyst is released, contaminating the last fraction of catalyst removed from the reactor. The heel-contaminated catalyst should not be reused because only a small fraction of the carbon on the heel catalyst is removed in the regeneration section. If returned to inventory, the carbon would react rapidly, causing temperature excursions. If heel-contaminated catalyst is reused, there is a high potential for damage to the unit. Density grading was used, after ex situ regeneration to recover the uncontaminated catalyst for reuse.
- OSTI ID:
- 103971
- Journal Information:
- Oil and Gas Journal, Vol. 93, Issue 38; Other Information: PBD: 18 Sep 1995
- Country of Publication:
- United States
- Language:
- English
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