Method and apparatus for treating mixed waste by pyrolysis
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United States of America Patent
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Mar 29, 2011
Grant Date -
Apr 7, 2005
app pub date -
Jan 29, 2003
filing date -
Jan 30, 2002
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Abstract
A method and apparatus for treating mixed waste by pyrolysis. Organic mass is carbonized by heating to carbon in a pyrolysis reactor (3) in an oxygen-free environment. Pyrolysis gases are distilled for oil and the gases are used for energy production. Solid matter resulting from pyrolysis is sieved for separating inorganic coarse particles from a carbon fraction. The carbon fraction is milled in two operations, first with a roller mill (8) and then with a jet mill (10), a removal of metal being performed between the operations. The pulverized carbon fraction is classified by means of ionizing particle separators (11, 12, 13). The multi-stage particle separation is followed by discharging clean air and recovering fine carbon.
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