F - Mech Eng,Light,Heat,Weapons – 23 – G
Patent
F - Mech Eng,Light,Heat,Weapons
23
G
60/1, 48/6
F23G 5/027 (2006.01) C10B 53/00 (2006.01) C10J 3/66 (2006.01)
Patent
CA 1259800
ABSTRACT OF THE DISCLOSURE A process for pyrolysis and combustion of combusti- ble solid material which comprises the steps of introducing combustible solid material into the upper section of a pyrolysis chamber, moving the material downwardly at a controlled rate through multiple stage zones in said pyrolysis chamber, passing hot gaseous products of the partial oxidation of carbon char upwardly countercurrent to the movement of said solid material in said pyrolysis chamber, driving off volatile matter in said solid material in a multistage equilibrium process, depositing carbon char in the lower section of the pyrolysis chamber, in- troducing air into the lower section of the pyrolysis chamber and partially oxidizing the char to form said hot gaseous pro- ducts, removing ash and other non-combustible material from the bottom of the chamber, removing a hot overhead fuel gas comprised of the volatile matter from the solid material and the hot gaseous products of the partial oxidation of the carbon char, passing the overhead fuel gas to a combustion chamber for combustion thereof with air, and applying the resulting hot com- bustion gases exiting the combustion chamber to a heat load. Where the combustible solid material contains one or more acid components, the process also includes the step of passing the overhead fuel gas containing said components to a zone con- taining a chemical adsorbent, and recovering a clean hot fuel gas substantially free of the acid components, for passage to the combustion chamber.
516978
G.g.c. Inc.
Johnson Douglas S. Q.c.
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