Fluidized bed having modified surfaces in the heat extractor

Details Fluidized bed having modified surfaces in the heat extractor Fluidized bed having modified surfaces in the heat extractor

1985-12-20

1987-12-29

Scott, Samuel

Combustion

Fuel disperser installed in furnace

Disperser feeds into permeable mass, e.g., checkerwork, etc.

16510416, 1651341, 422146, F23D 2100, F28D 1300, F28F 1900

Patent

active

047158093

ABSTRACT:
Heat exchanger tubes which are immersed in a fluidized bed of a combustion fluidized bed installation are provided with flow deflectors which reduce erosion of the fluidized materials in the bed on the tubes. The flow deflectors are preferably fins or pins, which protrude from the surface of the tubes and which disturb the erosive flow against the outer walls of the tubes. The flow deflectors also increase the surface areas of the tubes and thereby improve heat transfer from the combustion in the fluidized bed to a fluid heat exchanging medium within the tubes.

REFERENCES:
patent: 3030937 (1962-04-01), Witzke
patent: 3957419 (1976-05-01), McKenzie
patent: 4124068 (1978-11-01), Thompson
patent: 4425303 (1984-01-01), Schilling et al.
patent: 4545959 (1985-10-01), Schilling et al.
patent: 4554967 (1985-11-01), Johnson et al.

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