Furnaces – Process – Treating fuel constituent or combustion product
Reexamination Certificate
1999-07-01
2001-03-06
Ferensic, Denise L. (Department: 3749)
Furnaces
Process
Treating fuel constituent or combustion product
C110S196000, C110S219000, C110S223000, C110S224000, C110S227000, C110S1010CD, C110S102000, C110S327000, C110S255000, C110S289000
Reexamination Certificate
active
06196144
ABSTRACT:
BACKGROUND OF THE INVENTION
(1) Field of the Invention
The invention relates to a device, and a process for charging thereof, for carrying out high-temperature recycling for heterogeneously occurring waste.
(2) Description of the Prior Art
It is thus known from German Patentschrift 4 130 416, to thermally treat heterogeneously occurring waste in unsorted, untreated form so that all contents are thermally separated and optionally subjected to material conversion, so that high-temperature recycling may be achieved with complete processing. The heterogeneously occurring waste is thus compressed to form compact packages and charged into an elongated channel heated externally, wherein the temperature of the heated channel should be above 100~C. Non-positive contact with the channel walls should thus be maintained only until the entrained liquids and slightly fluid materials are evaporated and existing recovery forces of individual components are compensated.
It has now been shown that there are material conversions due to the heat input into the compact packages via the externally heated channel, which firstly may reduce the volume, and that secondly the recovery forces of the compacted waste are compensated considerably more quickly than is desirable from the point of view of gas tightness.
A similar solution is also described in German Patentschrift 4 339 548 and there in the corresponding process the gases and condensation products being produced are removed in the direction of the high-temperature reactor via additional side channels arranged outside of the channel. Removal takes place via appropriately designed openings and additional rotating mechanical clearing devices are present at the side channels.
SUMMARY OF THE INVENTION
It is the object of the invention to improve the gas tightness at the inlet to a channel, such as that shown in German Patentschrift 4 130 416.
The device of the invention is thus designed so that the heterogeneously occurring waste in unsorted form is compressed without any further pre-treatment to form compact packages having a predetermined cross section which are serially forced through a heated channel of equal cross section for evaporation of liquids and slightly fluid materials. A high-temperature reactor is connected to this channel for thermal treatment and processing of the different material components present in the waste. The [device of the] invention is characterised by a temperature insulating mouthpiece interconnecting the reactor and the channel for limiting the conduction of heat from the reactor to the channel.
Accordingly, packages may be serially forced through the channel and into the reactor while maintaining the packages in sealing engagement with the channel to prevent reduction in the predetermined cross section in response to high temperatures transmitted from the reactor. [in that a non-heated section is present at the inlet of the channel into which at least one compact package of the compressed waste may be introduced.]
REFERENCES:
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patent: 3697056 (1972-10-01), Prins, Sr. et al.
patent: 3855950 (1974-12-01), Hughes, Jr. et al.
patent: 4473014 (1984-09-01), Dejanovich
patent: 4637327 (1987-01-01), Jorgensen
patent: 4650546 (1987-03-01), Le Jeune
patent: 4732090 (1988-03-01), Bollmann, Sr. et al.
patent: 5197684 (1993-03-01), Bihlet et al.
patent: 5890443 (1999-04-01), Taya et al.
patent: 6030204 (2000-02-01), Breen et al.
Ferensic Denise L.
Howard & Howard
Rinehart Ken B.
Thermoselect AG
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