Importance

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Abstract

A regenerative thermal oxidation system is useful for treating a waste gas stream that contains volatile organic compounds. The volatile organic compounds are oxidized in an oxidation chamber. The heat and oxygen necessary to support the oxidation reactions is provided by a hot oxidation gas stream produced by the combustion of wood waste with excess air in a combustion chamber. The heat generated by the oxidation and combustion reactions is recovered in a plurality of regenerators. Any particulates in the hot oxidation gas stream are removed by a particulate removal system such as a cyclone separator or a high temperature filter. Preferably at least two regenerators containing heat exchange material are used to recover the heat from the oxidation reactions. The first regenerator is in heating service for heating the waste gas stream before it enters the oxidation chamber. The second regenerator is in cooling service for cooling the oxidized gas stream from the oxidation chamber by absorbing a portion of the heat generated by the oxidation and combustion reactions. Periodically the flow through the regenerators is reversed such that the cooling regenerator is switched to heating service and the heating regenerator is switched to cooling service.

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First Claim