Systems and methods for treating and preventing blockages in...

Furnaces – Process

Reexamination Certificate

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C110S116000, C110S1010CD

Reexamination Certificate

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07028625

ABSTRACT:
Systems, methods and apparatus are provided for introducing one or more unblocking materials into solid fuel conditioning equipment at predetermined locations and intervals to prevent the occurrence of, or to treat the existence of at least one solid fuel blockage within the equipment, wherein introduction of the one or more unblocking materials is based on or triggered by an assessment of whether there is an actual or impending partial or complete blockage of solid fuel within the conditioning equipment, and wherein such assessment is made by measuring pressure within the solid fuel conditioning equipment and then comparing the measurement(s) against a baseline pressure.

REFERENCES:
patent: 1628609 (1927-05-01), Newhouse
patent: 3050018 (1962-08-01), Pearson
patent: 3092337 (1963-06-01), Patterson
patent: 4919795 (1990-04-01), Fujii et al.
patent: 5025930 (1991-06-01), Barthelmess
patent: 5289978 (1994-03-01), Lundquist
patent: 5348272 (1994-09-01), Lukstas et al.
patent: 5560550 (1996-10-01), Krawczyk
patent: 5938045 (1999-08-01), Makino et al.
patent: 6443376 (2002-09-01), Huang et al.
patent: 6644479 (2003-11-01), Kimmeyer et al.

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