Combustion Engineering, Inc.

Peter L Stanwicks

Stanley E Kmiotek

Frank J Paskowski, Jr

A high efficiency exhauster which is capable of attaining operating efficiencies of up to 70% when employed in a solid fuel pulverizer firing system that includes a pulverizer which is operative to effect the pulverization therewithin of the solid fuel supplied thereto and a furnace into which the pulverized solid fuel is injected for combustion therewithin. The high efficiency exhauster includes a casing, an inlet ring supported on the casing, a rotor mounted on the casing for rotation therewithin, a multiplicity of blades, each of a preestablished length and width, mounted in spaced relation one to another on the circumference of the rotor so as to extend at a preestablished angle, and an outlet formed in the casing.

High efficiency exhauster for a solid fuel pulverizing and firing system

A journal bearing system (50, 52) particularly suited for use in a bowl mill (10) of the type that is employed for purposes of effecting therewithin the pulverization of material such as coal. The function of the subject journal bearing system (50, 52) is to provide the bearing support for the journal shaft (22, 54) on which the pulverizer roll (20) is mounted that through the coaction thereof with a suitable surface (14) provided for this purpose effects the pulverization of material. The subject journal bearing system (50, 52) includes first bearing means (62, 116) positioned at a first location along the length of the journal shaft (22, 54) so as to be cooperatively associated therewith, second bearing means (80, 128) positioned at a second location along the length of the journal shaft (22, 54) so as to be cooperatively associated therewith, oil seal wear ring means (86, 140) positioned at a third location along the length of the journal shaft (22, 54) so as to be cooperatively associated therewith and air seal ring means (88, 142) cooperatively associated with the upper journal housing (58, 110) and operative for purposes of effecting control over seal air pressure.

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Windsor, CT, United States of America

Peter L Stanwicks