Shell Spher process

The Shell Spher process (Shell Pellet Heat Exchange Retorting) is an above ground fluidization bed retorting technology for shale oil extraction. It is classified as a hot recycled solids technology.^[1][2]

Shell Spher process

Process type	chemical
Industrial sector(s)	Chemical industry, oil industry
Feedstock	oil shale
Product(s)	shale oil
Developer(s)	Shell Oil

Raw oil shale is crushed to a fine particles. Heat is transferred to oil shale by heat-carrying ceramic balls of size 6 to 8 millimetres (0.24 to 0.31 in). Raw oil shale is preheated in fluidized bed at the temperature of 600 °F (320 °C) in the case if oxygen is used as fluidizing medium, or at 650 °F (340 °C) if non-oxidizing gases are used. Heated ceramic balls fall then through the bed in counter-current direction. The preheated oil shale is further heated in the retorting vessel. The retorted spent shale is cooled in a fast-fluidized bed by the recirculated cool pellets from the preheater; while cooling the spent shale ceramic balls are heated by the spent shale.^[3]

See also

• Alberta Taciuk Process
• Kiviter process
• Petrosix process
• Galoter process
• Fushun process
• Paraho process
• Lurgi-Ruhrgas process
• TOSCO II process