Title: Furnace for incinerating waste materials

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Claims: I claim:

1. A furnace for incinerating waste materials which comprises:

a stationary casing;

a frusto-conically shaped grate mounted for rotational movement within said casing; said grate formed by a plurality of cylindrically-shaped, juxtaposed rings, said rings having radially and outwardly extending face members including orifice means for joining adjacent face members for expansion by pins, each ring member being formed of a plurality of overlapping subsections; and

means for rotating said grate.

2. The furnace according to claim 1 characterized in that there are provided rotating joints at each end of the grate so as to ensure its tightness with respect to the stationary casing.

3. The furnace according to claim 1 characterized in that oxygen and liquefied petroleum gas injections can be automatically effected by means of a known per se temperature control system in case of insufficient temperature to add their effect to that of the main fuel burners; the pressure thereof can be decreased by the same regulator device in case of excess of temperature.

4. The furnace as defined in claim 1 including a cylindrically-shaped member mounted to said grate proximate to junctures of radially-extending face members.

5. The furnace as defined in claim 1 wherein said subsections are of like sizes.

6. An incinerator unit including the furnace as defined in claim 1 and additionally comprising an external casing which envelopes said stationary casing, said external casing provided with a predrying chamber means disposed upstream of the entrance to said furnace for predrying said waste materials to be treated with hot flue gases withdrawn from said furnace.

7. The incinerator unit as defined in claim 6 and additionally comprising post combustion zone means for receiving said hot flue gas, said zone means including burner means for maintaining operational temperatures therein.

8. The incinerator unit as defined in claim 6 and additionally comprising an ash pit means disposed between said furnace and said external casing to receive hot ashes, one end of said ash pit being disposed beneath a water reservoir to permit selective discharge of water from said reservoir into said pit to extinguish said ashes and to transport said ashes to a discharge zone of said incinerator unit.

9. The incinerator unit as defined in claim 8 wherein said incinerator includes a flue gas purification system including a flue gas fan means for discharging flue gas from said incinerator.

10. The incinerator unit as defined in claim 9 wherein a register is provided in said flue gas purification system to permit recycle of flue gas during start-up.
Other info:

Inventors: du Chambon, Michel Georges Jean Picard (Versailles, FR)

Application Number: 508355
Filing Date: 1974-09-23
Publication_date: 1976-02-24
Assignee: B. V. Peximac (Netherlands, NL)
Primary Class(es): 110/240 432/105
Other Classes:
US Patent Ref:

2127328	Aug, 1938	Egan	110/19.
2915877	Dec, 1959	Darling	432/251.
2985120	May, 1961	Brandt et al.	110/19.
3050868	Aug, 1962	Erisman et al.	34/136.
3408969	Nov, 1968	Maurice	110/14.
3631824	Jan, 1972	Smuck	110/14.
3682117	Aug, 1972	Rousseau	110/19.

Other Refs:
Primary Examiner: Sprague, Kenneth W.
Assistant Examiner:
Attorney: Marn & Jangarathis