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- W94494580 abstract "The present invention is directed to a wear compensating seal arrangement for use in a rotary piston feeder utilized for feeding pulverized coal into a gasifier operating at relatively high pressures and elevated temperatures. The rotary piston feeder has a circular casing with a coal loading opening therein diametrically opposed from a coal discharge and contains a rotatable disoidal rotor having a cylinder in which a reciprocatable piston is disposed. The reciprocation of the piston within the cylinder is provided by a stationary conjugate cam whereby pulverized coal from a coal hopper at atmospheric pressure can be introduced into the cylinder and then discharged therefrom into the high pressure gasifier while maintaining minimal losses of producer gas and the expenditure of minimal energy which would detract from the efficiency of the gasification. The seal arrangement of the present invention is disposed between the rotor and the casing about the coal discharge and prevents the high pressure gases from within the gasifier from escaping between these relatively movable parts during operation of the coal feeder. The seal utilizes a primary seal in contact with the rotor and a secondary seal supporting the primary seal. The primary seal is continuously urged towardsmore » the rotor by springs and the high pressure producer gas.« less" @default.
- W94494580 created "2016-06-24" @default.
- W94494580 creator A5040581137 @default.
- W94494580 creator A5054969825 @default.
- W94494580 date "1979-03-06" @default.
- W94494580 modified "2023-09-24" @default.
- W94494580 title "Wear compensating seal means for rotary piston coal feeder. [DOE Patent]" @default.
- W94494580 hasPublicationYear "1979" @default.
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