Method and apparatus to prevent air flow inversion in flare stac

Details Method and apparatus to prevent air flow inversion in flare stac Method and apparatus to prevent air flow inversion in flare stac

1975-11-28

1976-11-30

Favors, Edward G.

Combustion

Process of combustion or burner operation

Burning waste gas, e.g., furnace gas, etc.

23277C, 431202, F23D 1320

Patent

active

039946630

ABSTRACT:
Hazardous inversion of ambient air into a waste gas elevated flare stack is prevented by the controlled injection of a purge gas into the bottom of the stack. Upward or downward flow of gases in the stack deflects a small horizontal, high velocity stream of gas relative to opposite tubes capable of sensing the impact energy relative to differential pressure detection devices. The devices thus send a signal to control the quantity of purge gas input as a function of the deflection of the stream.

REFERENCES:
patent: 3578892 (1971-05-01), Wilkinson
patent: 3741713 (1973-06-01), Reed
patent: 3901643 (1975-08-01), Reed et al.

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