F - Mech Eng,Light,Heat,Weapons – 23 – G
Patent
F - Mech Eng,Light,Heat,Weapons
23
G
110/14
F23G 5/20 (2006.01) C10G 1/02 (2006.01) F23G 5/46 (2006.01)
Patent
CA 1227970
METHOD AND APPARATUS FOR COMBUSTION OF DIVERSE MATERIALS AND HEAT UTILIZATION ABSTRACT OF THE DISCLOSURE A method and apparatus is disclosed for combustion of diverse materials, particularly combustible solids, liquids or gases, and mixtures thereof. Organic waste materials or hydrocarbon-containing materials such as sewage sludge, refuse, coal, refinery sludge, tar sands, coal shale, coal tailings, spent foundry sand, and many other materials, may be inciner- ated. 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. In one form the apparatus has a series of internal zones including an ignition zone, a principal combustion zone, a falling temperature zone and a spent solids removal zone. The appa- ratus 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. Particulate combustible solids gases or liquids feedstock may also be heated by re- cycled hot solids material to preheat, condition or otherwise treat the feedstock. The method and apparatus employs direct solids-to-gas contact established by lifting and cascading combustible solids through a hot gas stream such that high combustion efficiency, rapid throughput, low pressure drop across the combustion zone, among other advantages, are ob- tained. In particular, the method and apparatus is especially suitable for burning coal and utilization of the by-product heat of combustion for generating steam. Incineration of refinery sludge, spent foundry sand and oily mill scale are also disclosed and all processes provide environmental advan- tages. -2-
456323
Reed Leland M.
Reed William A.
Saeman Walter C.
Macrae & Co.
Pedco Inc.
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