Methods and apparatus for incinerating combustible waste material such as farm animal biomass
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Feb 20, 2001
Grant Date -
N/A
app pub date -
May 12, 1998
filing date -
May 12, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Farm animal biomass, such as the waste and shredded carcasses of poultry and hogs, and/or animal bedding, is incinerated by being delivered to the inlet of a duct. During a processing period the biomass is heated uniformly to a temperature while advanced through the duct by a feed screw without sufficient oxygen to support combustion. The temperature and processing time are sufficient for partially carbonizing the biomass into combustible gas and partially carbonized char. The char is discharged to a first combustion chamber to be combusted and converted to ash. The combustible gas is discharged to a second combustion chamber to be combusted within hot porous cylindrical ceramic combustors. A portion of the duct passes through the second combustion chamber in order to supply heat for partially carbonizing the biomass. Additional heat is provided by passing hot air through the feed screw. That hot air is discharged from the feed screw and supplied to the combustion chambers to support combustion therein.
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