Standby cooling system for a fluidized bed boiler

Details Standby cooling system for a fluidized bed boiler Standby cooling system for a fluidized bed boiler

1989-06-09

1990-03-27

Yuen, Henry C.

Liquid heaters and vaporizers

Plants

Feed water heaters

122 4D, 122507, F22B 3300

Patent

active

049111078

ABSTRACT:
A system for protecting components including the heat exchangers of a fluidized bed boiler against thermal mismatch. The system includes an injection tank containing an emergency supply of heated and pressurized feedwater. A heater is associated with the injection tank to maintain the temperature of the feedwater in the tank at or about the same temperature as that of the feedwater in the heat exchangers. A pressurized gas is supplied to the injection tank to cause feedwater to flow from the injection tank to the heat exchangers during thermal mismatch.

REFERENCES:
patent: 4493186 (1985-01-01), Emsperger et al.
patent: 4495899 (1985-01-01), Carberry
patent: 4800846 (1989-01-01), Idei et al.
patent: 4845942 (1989-07-01), Schemenau et al.

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