| 摘要 |
<p>Background of the Invention This invention relates to a process and apparatus for the destruction of solid waste material by burning the combustibles in a gravity-type, multiple hearth furnace. Heretofore in the art to which my invention relates, the conventional operation of such furnaces includes three distinct process functions, namely, drying and preheating the feed materials; burning of the volatiles in the feed materials; and cooling the inert ash. Prior to being burned or oxidized in the burning section, the solid matter flows through a pre-heating zone where it is preheated and dried by the flow of hot waste gas from the burning zone or by other means. Such a process is particularly adapted for the burning of substances that are high in inerts and low in calorific value, such as filter cake</p> |
