Furnaces – Refuse incinerator – For explosive or radioactive material
Patent
1982-06-09
1983-12-13
Favors, Edward G.
Furnaces
Refuse incinerator
For explosive or radioactive material
110235, 110255, F23G 700
Patent
active
044199430
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
This invention relates to an incinerator for chemical waste material stored in barrels. In many factories and enterprises within the chemical field it is very difficult and expensive to dispose of the chemical waste material resulting from the operation in a manner harmless to the environment, even where the waste in question is in itself suitable for complete combustion without giving rise to air pollution. More particularly, the waste material in question is such which arises from various forms of chemical activities and is stored in barrels, generally of a size of 200 l. The waste material is frequently not pumpable, but has a high viscous or tough consistency or is in a solid state. The chemical waste may, however, also be in entirely liquid form. The taking-out of such waste material from the barrels prior to disposal may involve considerable environmental risks for the persons who handle the waste.
Illustrative of waste which can be incinerated by the present invention is waste resulting from the production of lacquer and varnish. Examples of such waste are phenol lacquer comprising phenol, formaldehyde, cresol, xylene, i-butanol, methanol or peramine lacquer (composed of formaldehyde, urea, ethanol, i-butanol) or melamine lacquer (comprising formaldehyde, melamine, water) or epoxy lacquer (comprising epoxy resin, methanol, methyloxitol, acetone, tetrabromobisphenol A, dimethylformamide). Besides, a number of solvents occur in connection with these types of waste.
Incinerators for chemical waste material are known which comprise a primary combustion chamber with an outlet connected to a secondary combustion chamber, in which the combustion of gases and flying particles from the primary combustion chamber is completed. An example of such an incinerator is disclosed in U.S. Pat. No. 3,670,667.
It is the object of the invention to construct the primary combustion chamber and associated equipment of an incinerator of the kind referred to in such a manner that it is capable of receiving the chemical waste material in the barrels, in which it is stored and to effect incineration under optimum conditions irrespectively of the consistency of the waste material within the full range from liquid to solid.
SUMMARY OF THE INVENTION
According to the invention, in an incinerator of the kind referred to, the primary combustion chamber has a bottom section suitable for the combustion of solid waste material and a top section provided with a lateral port with a sluice closure and associated means for introducing a barrel through the port into the top section and withdrawing it therefrom, a barrel holder being provided in the top section in level with the lateral port, the barrel holder being adapted to receive and hold a barrel introduced through the port and being mounted for rotation about a horizontal axis for the purpose of turning a barrel held by it from upright to fully or partly inverted position and vice versa, burners and air injection means being provided for supplying flame heat and air both to the bottom section of the primary combustion chamber and to the interior of a barrel standing upright in the barrel holder.
In an incinerator constructed in this manner, incineration will be initiated as soon as a barrel has been introduced into the top section of the combustion chamber and is standing in upright position in the barrel holder. If the waste material is in a liquid state, incineration in this manner may proceed until practically the whole content of the barrel has been burnt, and the barrel may then be turned in its holder to fully or partly inverted position to drop any residual waste material and/or any ashes into the bottom section of the combustion chamber, where residual waste material will be burnt in conventional manner. If the waste material is solid or of tough consistency, the initial stage of the incineration will mainly serve to burn the waste material loose from the wall of the barrel so that practically the whole content of the barrel may then be dropped
REFERENCES:
patent: 2822160 (1958-02-01), Walpole
patent: 3670667 (1972-06-01), Faurholdt
patent: 3922974 (1975-12-01), Hempelmann
patent: 4136624 (1979-01-01), Kato et al.
patent: 4332626 (1982-06-01), Hood et al.
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