Solid fuel pulverizer for pulverized fuel burning system

Patent · Tue Sep 01 04:00:00 EDT 1987

OSTI ID:6082029

Sayler, W H; White, J C

A solid fuel pulverizer is describes which consists of: a vertical shaft rotatably mounted in a vertically positioned substantially cylindrical housing having a top wall, cylindrical side wall, and bottom wall; a series of horizontal impellers fixed to the shaft in mutually spaced arrangement and terminating short of but relatively close to the housing to define therewith relatively narrow peripheral flow space therearound, the impellers are provided with air-motivating, solid particle impact members thereon, and the inside face of the cylindrical side wall of the housing being provided with mutually spaced, substantially vertical, impact bars positioned within the flow space; a series of annular, substantially flat and horizontal partitions fixed to the housing, the individual partitions thereof extending peripherally inwardly thereof between mutually adjacent impellers, each of the individual partitions being spaced closely below and underlying a corresponding impeller to direct flow toward the axis of the shaft in opposition to centrifugal force exerted by the impellers; air inlet means in the top wall of the housing for introducing primary air to provide a carrier stream of air; solid fuel inlet means also in the top wall of the housing for introducing solid fuel to be pulverized; discharge conduit means adjacent to the lower end of the housing; and means for rotating the impeller shaft.

• Assignee: T.A.S., Inc., Magna, UT
• Patent Number(s): US 4690338
• OSTI ID: 6082029
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
421000* -- Engineering-- Combustion Systems
AIR FLOW
CHEMICAL REACTIONS
COMBUSTION
COMMINUTION
FLUID FLOW
FUELS
FURNACES
GAS FLOW
INTAKE STRUCTURES
MACHINE PARTS
MECHANICAL STRUCTURES
OXIDATION
POSITIONING
PULVERIZED FUELS
PULVERIZERS
SHAFTS
SOLID FUELS
SPACE DEPENDENCE
THERMOCHEMICAL PROCESSES
WALLS