Gas-gas heater protection system and method

Details Gas-gas heater protection system and method Gas-gas heater protection system and method

1993-12-02

1996-04-23

Rivell, John

Heat exchange

Regenerator

Movable heat storage mass with enclosure

165 4, 110345, 110344, 110215, F23L 1502

Patent

active

055094619

ABSTRACT:
A system for protecting the material of a gas-gas heater which receives a raw flue gas for being provided to a desulfurization plant for cleaning of the flue gas comprises a path of raw flue gas having a gas temperature which is provided to the heater. A quench device communicates with the raw flue gas flow for providing a rapid cooling of the raw flue gas. A controller communicates with the flow of raw flue gas and the quench device. The controller has a variable, pre-set temperature value which is the temperature at which the material of the heater can be damaged. The controller monitors the temperature of the raw flue gas for detecting when the temperature of the raw flue gas is greater than the pre-set temperature value for activating the quench device in order to provide a rapid cooling of the raw flue gas until the gas temperature is less than the pre-set temperature value.

REFERENCES:
patent: 3997294 (1976-12-01), Kritzler
patent: 4078503 (1978-03-01), von Dreusche, Jr.
patent: 4289502 (1981-09-01), Meunger et al.
patent: 4503902 (1985-03-01), Zolik
patent: 4909160 (1990-03-01), Frick et al.
patent: 5000924 (1991-03-01), Cygnarowicz et al.
patent: 5048430 (1991-09-01), Kawai
patent: 5097889 (1992-03-01), Ritter
patent: 5213152 (1993-05-01), Cox
patent: 5282429 (1994-02-01), Kato et al.

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