Systems and methods for processing waste materials

Furnaces – Combined

Reexamination Certificate

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Reexamination Certificate

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11245794

ABSTRACT:
A multi-step process is provided in which waste material is processed in two or more steps. Specifically, an earlier step of the process heats the waste material at a first temperature. This results in a release of vapors for materials having a boiling point that is lower than the first temperature. A subsequent step of the process heats some or all of the remaining waste material at a second temperature, which is preferably higher than the first temperature. The subsequent heating results in a release of additional vapors for those materials having a boiling point that is lower than the second temperature. A system configured to carry out the process is also disclosed.

REFERENCES:
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patent: 4977839 (1990-12-01), Fochtman et al.
patent: 5117771 (1992-06-01), Summers
patent: 5216821 (1993-06-01), McCabe et al.
patent: 5233932 (1993-08-01), Robertson
patent: 5337684 (1994-08-01), Summers
patent: 5411714 (1995-05-01), Wu et al.
patent: 5653183 (1997-08-01), Hansen et al.
patent: 6226889 (2001-05-01), Aulbaugh et al.
patent: 6619214 (2003-09-01), Walker

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