Vibrating apparatus and method improvements for providing contin

Details Vibrating apparatus and method improvements for providing contin Vibrating apparatus and method improvements for providing contin

1989-05-24

1990-02-13

Yuen, Henry C.

Furnaces

Fuel feeders

Feeder responsive to fuel bed height

110186, 110101CF, 110347, 198762, 198771, F23H 518

Patent

active

048996696

ABSTRACT:
The apparatus and method are improvements over the refuse derived fuel (RDF) handling system disclosed in applicant's U.S. Pat. No. 4,774,893, in which the activated bins are equipped with centerless baffles made up of a plurality of stub type internal baffles affixed cantilever fashion to the bin side walls at predetermined levels downwardly of the bin, with the baffles having increased length as the levels of same approach the bin discharge outlet, that avoid the formation of vertical bridges building up from the top baffle through the bin inlet to clog and feed of the RDF to the respective bins, the use of cycle type operation or pulsing for the vibrating feeder drives on start up of the system to eliminate vertical bridging up from the feeder trough into and through the activated bins supplying same and insure the steady low feed rate required while the power plant furnaces involved are brought up to temperate, and to provide the system vibrating feeders with an inclined ramp type obstruction upstream but adjacent the feeder trough RDF discharge outlet to the furnace fuel feed chute serviced by same to insure that the RDF supplied to the furnace feed chute was conveyed solely by vibration, whereby the tendency of some furnace fire chambers to operate at negative pressure, which can result in the loss of control of the discharge rate of the feeder servicing same, is not a factor in the supply of the RDF to the furnace fire chamber.

REFERENCES:
patent: 3178068 (1965-04-01), Dumbaugh
patent: 3251457 (1966-05-01), Dumbaugh
patent: 3261592 (1966-07-01), Dumbaugh et al.
patent: 4774893 (1988-10-01), Dumbaugh
patent: 4844289 (1989-07-01), Dumbaugh
Bulk Solids Handling, vol. 4, No. 1, Mar. 1984, reprint of article by G. D. Dumbaugh, "The Evolution of the First Universal Vibratory Drive System for Moving and Processing Bulk Solid Materials", pp. 125-140.
Resource Recovery, No. 3, Sep. 1987, Article "From Cash Burner to Trash Burner", front cover sheet and pp. 5-10, 58 and 59, by Michael D. Long.
Solid Waste & Power, Feb., 1987, Article "RDF: A Practical and Finally Proven Alternative", pp. 16-22, by D. E. Hill.

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