C - Chemistry – Metallurgy – 10 – G
Patent
C - Chemistry, Metallurgy
10
G
196/22
C10G 1/04 (2006.01)
Patent
CA 1059052
ABSTRACT Bitumen froth from a hot water process extraction plant is fed into a large surge tank in which it is retained for at least one hour while mixing. The froth is then fed by a variable speed pump through a feed conduit to a distributor vessel connected to scroll centrifuge separators. The pressure changes within the distributor vessel are monitored and used to regulate the pump to prevent froth surges at the separators. Naphtha is introduced into the feed line to mix with the froth. The viscosity of this mixture is monitored and used to regulate the naphtha addition to maintain a constant diluent/bitumen ratio in the diluted froth. The system supplies the diluted froth to the separators at a feed rate and with a composition which vary only slowly.
235429
Falkenberg Grant
Kizior Thaddeus E.
Canada-Cities Service
Gulf Oil Canada Limited
Her Majesty The Queen In Right Of The Province Of Alberta
Imperial Oil Limited
Majesty (her) The Queen In Right Of Canada As Represented By The Minist Er Of Energy
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