Furnaces – Including noncombustible fluid supply means – Having treatment means
Patent
1993-07-15
1994-03-15
Davis, Jr., Albert W.
Furnaces
Including noncombustible fluid supply means
Having treatment means
110302, 165 4, 165 7, 137309, F27D 1700, F28D 1702
Patent
active
052938271
ABSTRACT:
The present invention is directed to an improved regenerative thermal oxidizer and a method of purifying gases by raising gases to their auto ignition temperature and by exchanging heat by inleting and outleting gases. The reactor has at least three regenerative thermal chamber units and these units have on a single surface at least three openings, a purge opening, an inlet opening and an outlet opening, which are connected to recycled outlet gases for purging, and to inlet and outlet gases respectively. Set against the purge, inlet and outlet openings is a slidable gate which has a single opening which moves through cycles so that its single opening coincides with the inlet opening of its chamber unit, or coincides with one or more spaces which are closed between the inlet and outlet opening, or with the purge opening, or coincide with the outlet opening. In other words, the gate cycles between inleting gases, no gas movement, purge position, no gas movement and outleting gases. There are means provided for moving the gate through the aforesaid cycle and, inlet ducts, purge ducts and outlet ducts are connected to their respective openings. The method involves utilizing the aforesaid apparatus so as to purify gases by thermal oxidation and to cause heat exchange by first running inlet gases through a given chamber unit and outlet gases through another chamber unit and reversing the flow between units as well as switching units for inlet and outlet purposes, and as well as purging used process gases as needed.
REFERENCES:
patent: 3225819 (1965-12-01), Stevens
patent: 3741286 (1973-06-01), Muhlrad
patent: 4280416 (1981-07-01), Edgerton
patent: 4470806 (1984-09-01), Greco
patent: 4754806 (1988-07-01), Astle, Jr.
patent: 4966228 (1990-10-01), Fawcett
patent: 5026277 (1991-06-01), York
patent: 5134945 (1992-08-01), Reimlinger et al.
Nester James L.
Reimlinger Richard G.
Davis Jr. Albert W.
Glynn Kenneth P.
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