Plant for retorting oil products contained in shales and sands

Patent · Tue Jul 20 04:00:00 EDT 1982

OSTI ID:6983248

Roma, C

A plant is described for continuously retorting oil products contained in shales and sands comprising a substantially horizontal retort furnace into which said shales and sands are introduced by means of hoppers and metering devices and placed on metal conveyors moving in counter-current to gases. Means are provided for placing shales and sands onto conveyors with a suitable thickness and for stirring the shales and sands. One or more combustion chambers are arranged outside the retort furnace for producing hot gases, and one or more input zones are located along the retort furnace for admitting hot gases into the retort furnace, causing the hot gases to mix with circulating gases which have been preheated by removing sensible heat from the exhausted shale and sand material. A direct contact condenser at the furnace head utilizes cold fluid to condense distilled oil products, and a decantation tank is arranged beneath the condenser for freeing the process gases from the dust. Uncondensed gases containing carbon dioxide, hydrogen, high hydrocarbon fractions, nitrogen and steam are recycled into the retort. Condensed oils from said distillation step, as well as oil drawn from the tunnel retort in liquid phase, are decanted and submitted to successive treatments.

• Assignee: EDB-83-014546
• Patent Number(s): US 4340444
• OSTI ID: 6983248
• Country of Publication: United States
• Language: English

Related Subjects

04 OIL SHALES AND TAR SANDS
040402* -- Oil Shales & Tar Sands-- Surface Methods
BELT CONVEYORS
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
CHEMICAL REACTORS
COMBUSTION CHAMBERS
CONVEYORS
DECOMPOSITION
DESIGN
DISTILLATION EQUIPMENT
ENERGY SOURCES
EQUIPMENT
FLUIDS
FOSSIL FUELS
FUELS
FURNACES
GASES
HAULAGE EQUIPMENT
INDUSTRIAL PLANTS
MATERIALS
MATERIALS HANDLING EQUIPMENT
OIL SAND PROCESSING PLANTS
OIL SANDS
OIL SHALE PROCESSING PLANTS
OIL SHALES
RETORTING
RETORTS
STIRRING