Method and plant for the treatment of materials, in particular waste materials and refuse

Abstract

A plant for the treatment of materials, in particular waste materials and refuse, comprises a combustion reactor (10) to which the material to be treated can be supplied. The combustion reactor has an input (17) for a combustion supporter comprising oxygen and an output (34) for the gases that are produced during the combustion of the material inside the reactor (10) and, in use, is substantiallyisothermic or quasi-isothermic at high or very high temperature, and without substantial oxygen deficit, in all of its parts. A portion of the combustion gases is recirculated and mixed with the combustion supporter to bring about a high degree of opacification thereof, which is increased by increasing the total pressure of the combustion chamber. The substances which cannot be gasified inside the reactor are immediately fused. The parameters of the gases at the output from the reactor are constantly measured by sensors with response-time characteristics of about 2 seconds.

Description

technical field [0001] The present invention relates to a method and apparatus for processing all kinds of materials, especially but not limited to waste and refuse. [0002] The present invention has been especially developed for an apparatus and method which can accept as input any material in solid, granular or liquid form or in slurry form, and which method is used to carry out this process and produce Inert slags and gases that are easily disposed of under the premise. Background technique [0003] A known method and apparatus of the above type are described in US patent US 5337683 and subsequent developments in patent application WO 02 / 081970 by the same applicant. This patent relates to a method of treating material such as waste or refuse to ensure its simple and economical disposal by introducing it into a high-pressure reactor, wherein the reactor is injected with up to 100% oxygen-enriched air (i.e. at least in the present pure oxygen within the limits achievabl...

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Problems solved by technology

[0012] However, despite the preheating of the recirculated fumes from which moisture has been removed, the cold zone at the feed end of the reactor is not eliminated, the result of which is known in the prior art, namely the formation of toxic organic substances, the temperatures reached during combustion Only partial segregation of non-combustible ashes, especially molten fractions, is permitted because the volatile constituents of the ash are entrained in the combustion fumes

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