| 摘要 |
A method and apparatus is disclosed for combustion of diverse materials, particularly combustible solids, liquids or gases, such as sewage sludge, refuse, coal, refinery sludge, tar sands, coal shale, coal tailings and spent foundry sand. A rotary combustion apparatus is employed which consists of a cylindrical drum, or other similar regularly shaped chamber, with a substantially horizontal axis of rotation including an ignition zone, a principal combustion zone, a falling temperature zone and a spent solids removal zone. The apparatus further includes solids transport chutes for forward and backward circulation of solids, arranged for the transfer of solids to or from one or more points. Feedstock may also be heated by recycled hot solids. The method and apparatus employs direct solids-to-gas contact established by lifting and cascading combustible solids through a hot gas stream.
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