Catalytic cracking

Mineral oils: processes and products – Chemical conversion of hydrocarbons – Cracking

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Details

208 52CT, 208120, 208125, C10G 1105, C10G 4716

Patent

active

048286788

ABSTRACT:
In the cataytic cracking of gas oils or heavier feeds, retarded catalyst aging is achieved by adding lighter saturated hydrocarbons such as paraffins and/or cycloparaffins to the feed together with employing a highly siliceous zeolite as the cracking catalyst. The unconverted light hydrocarbon may be recovered and recycled. The invention is applicable to fluid catalytic cracking for the manufacture of gasoline and light fuel oil, and also to the catalytic dewaxing process wherein normal paraffins are selectively cracked to reduce the pour point of a fuel oil or of a lubricant based stock.

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