Apparatus for cooling a middle region of the wall of a hearth in

Details Apparatus for cooling a middle region of the wall of a hearth in Apparatus for cooling a middle region of the wall of a hearth in

1991-09-26

1992-12-08

Bennet, Henry A.

Furnaces

Refuse incinerator

Refuse suspended in or supported by a fluid medium

34 57A, 34 57B, B09B 300

Patent

active

051688190

ABSTRACT:
Apparatus for cooling the wall of a fluidized bed hearth in a middle join region of generally upsidedown V-shaped vertical right cross-section between the upsidedown truncated pyramid-shaped bottom portions of the furnace above two parallel floors and a top portion of rectangular right cross-section, having a front face and a rear face parallel to the ridge of the upsidedown V-shape and having side faces perpendicular to said ridge, said wall being provided with heat exchanger tubes conveying water or an emulsion of water and steam, wherein the heat exchanger tubes are essentially horizontal and disposed in the flanks of the upsidedown truncated pyramid-shaped lower portions in line with the upsidedown V-shape and open out into tubes lining the side faces perpendicular to the ridge thereof. This makes it possible to perform cooling by natural circulation.

REFERENCES:
patent: 4823740 (1989-04-01), Ohshita et al.
"Umweltkraftwerk mit druckvirbel-schichtfeurerung", J. Bulbring, et al., BWK Brennstoff Warme Kraft, vol. 36, No. 10, Oct. 1984, pp. 405-409.
"Umweltfreundliches Kraftwerk mit Druckveirbelschichtfuerung", Von D. Bunthoff et al., VGB Kraftswerkstechnik, vol. 67, No. 8, Aug. 1987, pp. 751-757.
French Search Report.

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