Agitating – With heating or cooling – Medium in stirrer or mixing chamber
Patent
1987-10-30
1988-05-24
Simone, Timothy F.
Agitating
With heating or cooling
Medium in stirrer or mixing chamber
366171, 366172, 366293, 366305, 366307, 366343, B01F 716, B01F 1506
Patent
active
047462221
ABSTRACT:
Apparatus for the mixing and cooling of hot, particulate matter, such as hot, retorted oil shale, comprises a plurality of enclosed, vertically spaced apart, converging vessels through which the material to be mixed and cooled is flowed. At least the lowermost vessel is configured for a packed bed flow of the material and has mounted therein, on a vertical drive shaft, a mixer blade assembly having a plurality of similar mixing blades which are upwardly inclined at an angle, A.sub.1, of between about 30.degree. and about 75.degree. and preferably within about .+-.15.degree. of the sidewall angle of the vessels. The blades are mounted so as to have an angle of attack, A.sub.2, relative to the rotational direction of travel, of between about 20.degree. and about 60.degree.. A constant angle of attack along each mixing blade is assured by making the angle, A.sub.3, between the blade leading edge and the blade base to be related to the blade inclination and attack angles in accordance with the relationship:
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Cobb Delwin E.
Griswold Charles F.
Shih Chien-Cheng J.
Lambert Howard R.
Sandford D.
Simone Timothy F.
Union Oil Company of California
Wirzbicki G.
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