Fluid bed heat exchanger for contaminated gas

Details Fluid bed heat exchanger for contaminated gas Fluid bed heat exchanger for contaminated gas

1978-08-28

1981-12-29

Davis, Albert W.

Heat exchange

Regenerator

Checker brick structure

16510416, 16510418, 34 57A, 55390, 55267, F28D 1300, F28D 1500

Patent

active

043077730

ABSTRACT:
A heat exchanger is presented in which heat from a hot contaminated fluid stream is transferred to granular media of a fluid bed. Such streams can issue from, for example, manufacturing processes such as glass furnaces, and magnetohydrodynamic power plant. The hot fluid stream is used to fluidize the media; ash, slag, condensed vapors and other contaminants often found therein are deposited on the media. The bed is kept from fouling by diluting the contaminants with large quantities of media and by keeping the media of the bed highly active. Heat is transferred to the media and is subsequently transferred from the heated media to a second fluid stream either by removing the media from the bed and contacting it directly with the second fluid stream or by submerging conduits in the fluid bed and directing the second fluid stream therethrough. Where a high effectiveness for the heat exchanger is desired, the hot fluid stream is passed through two or more fluid beds in series and the media flows from fluid bed to fluid bed, countercurrent to the flow of the hot fluid stream. Contaminants can be recovered from the media, from the fluid beds and from the exhaust fluid from the fluid beds.

REFERENCES:
patent: 2537044 (1951-01-01), Garbo
patent: 2580635 (1952-01-01), Winter, Jr.
patent: 2665971 (1954-01-01), Lewis et al.
patent: 2697653 (1954-12-01), Nicholson
patent: 2702091 (1955-02-01), Smith, Jr.
patent: 2995426 (1961-08-01), Keith
patent: 3619422 (1971-11-01), Rummel et al.
patent: 3981355 (1976-09-01), Squires

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