F - Mech Eng,Light,Heat,Weapons – 23 – G
Patent
F - Mech Eng,Light,Heat,Weapons
23
G
110/10
F23G 5/12 (2006.01) F23G 5/16 (2006.01) F23G 5/32 (2006.01) F23G 5/50 (2006.01) F23G 7/10 (2006.01) F23N 3/00 (2006.01)
Patent
CA 1104879
TITLE METHOD AND APPARATUS FOR GENERATING HEAT FROM WASTE FUEL ABSTRACT OF THE DISCLOSURE A combustion apparatus is a two chamber wet wood burner with an optional third chamber. The third chamber is used to blend the combustion products down to the desired pro- cess temperature. Waste wood is fed into a primary chamber by means of an underfeed stoker. A conical pile is formed on the grate- covered floor centered above the stoker opening. Pre-heated underfire air is supplied to the bottom of the pile and both dries and gasifies the wood. The heat for gasification is developed from the reaction of the fixed carbon in the fuel with the underfire air. High pressure swirl air is admitted tangentially to the primary chamber above the fuel pile. The swirl air reacts with a small proportion of the pyrolized gases to maintain a steady temperature at the exit from the primary chamber. The swirl air also centrifugally separates particulate matter from the gas stream leaving the primary chamber. The total quanti- ty of underfire and swirl air is closely controlled to main- tain substoichiometric conditions in the primary chamber. Secondary air completes combustion of the pyrolized volatiles in the secondary chamber. The secondary air is admitted tangentially to establish a rotating mass of rela- tively cool combustion air adjacent to the walls of the sec- ondary combustion chamber. The air reacts with the volatiles at the base of the secondary chamber, after the volatiles have first been forced radially outward by the presence of a disc- shaped flame holder in the inlet to the chamber. The ensuing mass of hot flaming products of combustion, centered above the flame holder, spiral upwards within the outer rotating mass of combustion air and out the restricted outlet of the secondary chamber. The flame holder also acts as an effective barrier to the passage of finite sized particles of unburnt wood waste up the core of the concentric vertices in the primary and sec- ondary chambers. A heat exchanger drawing off hot stack gases suit- ably cooled in a blend chamber can be used to preheat the underfire air. The controls of the combustion apparatus act to 1) maintain a steady elevated temperature of pyrolized volatiles supplied to the secondary combustion chamber, 2) maintain an overall constant centrifugal separation force on particulate matter within the combined primary and secondary chamber, 3) maintain constant secondary and blend chamber exit tempera- tures, and 4) maintain constant underfire temperatures over a wide range of waste wood quantities and moisture contents.
322921
Lamb Frank H.
Lefcort Malcolm D.
Rada Petr
Enterprises International Inc.
Frayne & Company Robert
LandOfFree
Method and apparatus for generating heat from waste fuel does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for generating heat from waste fuel, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for generating heat from waste fuel will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-774224