Title: Pellet preheating and volatile recycling structure for glass making furnace

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Claims: I claim:

1. A pellet preheater adapted to receive the exiting combustion gases from a glass furnace for heating pellets to be introduced to the glass furnace comprising

a tubular hot gas stack section adapted to being connected to receive the exiting combustion gases from the glass furnace,

a top portion of the hot gas stack section being apertured to allow the combustion gases to pass therethrough,

a cylindrical exhaust tube to carry gases out of the preheater, and

a pellet containing stack section receiving and holding the pellets while they are heated and coated by the condensate from the combustion gases, said pellet stack section surrounding the hot gas stack section and the exhaust tube and including a lower portion, above that a reduced portion and above that a top section,

the lower portion of the pellet stack section surrounding the top portion of the hot gas stack section and including a discharge valve to allow discharge of the heated pellets from the preheater,

the top section of the pellet stack section surrounding the exhaust tube and including an intake valve to admit pellets to the preheater,

the reduced portion of the pellet stack section joining the top section and the lower portion of the pellet stack section and surrounding the exhaust tube, said reduced portion including an inwardly and downwardly sloping surface to heat the pellets by contact with the exhaust tube and the sloping surface of said reduced portion.

2. A pellet preheater as claimed in claim 1 wherein there is a fan connected to the exhaust tube to draw the exiting gas out from the pellet stack section of the preheater.

3. A pellet preheater as claimed in claim 1 wherein the intake valve and the discharge valve have the form of inverted cone-shaped surfaces to control the passage of pellets therethrough.

4. A pellet preheater as claimed in claim 1 wherein a downwardly and outwardly sloping surface connects the reduced portion and the lower portion of the pellet stack section to allow the lower portion to have a greater volume capacity so as to allow for maximum contact between the combustion gas and the pellets.

Other info:

Inventors: Lange, Karl H. (Allison Park, PA, US)

Application Number: 599440
Filing Date: 1975-07-28
Publication_date: 1976-04-27
Assignee: Pullman Incorporated (Chicago, IL)
Primary Class(es): 65/335 34/582, 55/479, 65/27, 432/180, 432/215
Other Classes:
US Patent Ref:

2179848	Nov, 1939	Forter	65/335.
3728094	Apr, 1973	Bowman	65/335.

Other Refs: 914,125

Jun, 1954	DT

Primary Examiner: Kellogg, Arthur D.
Assistant Examiner:
Attorney: Myers; Richard J.