Mineral oils: processes and products – Refining – Metal contaminant removal
Patent
1996-06-19
1998-11-24
Myers, Helane
Mineral oils: processes and products
Refining
Metal contaminant removal
208253, C10G 1700, C10G 2904
Patent
active
058401784
ABSTRACT:
A heavy feed, such as a resid which contains coke precursors and metals, is upgraded by dissolving a feed soluble metal alkoxide in the feed which is heated to a temperature sufficient to decompose the alkoxide, but below 450.degree. F. The alkoxide decomposition precipitates at least a portion of the coke precursors and metals out of the feed as a separate phase, thereby effectively removing them to form an upgraded feed. The upgraded feed, with or without the precipitate present, is then sent to a cat cracker or to other upgrading. When fed into a cat cracker, such as a FCC, the upgraded feed is converted to lower boiling liquids with less deactivation of the cracking catalyst than would occur if the metals and coke precursors remained in the feed, even with the precipitate present in the feed. In the cat cracker, the precipate which contains the alkoxide metal and coke precursors and metals from the feed, is converted into coke particles having a particle size smaller than the catalyst particles. This enables the coke particles to be separated from the spent catalyst particles via cyclone separation, so that the coke particles are not sent to the catalyst regenerator.
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Huang Jean C.
Lambeth Belinda G.
Leta Daniel P.
Terry Patrick H.
Exxon Research and Engineering Company
Myers Helane
Takemoto James H.
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