Exhaust boiler

Details Exhaust boiler Exhaust boiler

1988-09-08

1989-05-16

Favors, Edward G.

Liquid heaters and vaporizers

Flue

Vertical

60 39182, 122470, F22D 100

Patent

active

048299383

ABSTRACT:
An exhaust boiler includes a high-pressure superheater, a high-pressure steam generator, a high-pressure economizer, a low-pressure steam generator and a low-pressure economizer disposed sequentially from an upstream side within an exhaust gas flow passageway, and a denitrification apparatus is disposed upstream of the high-pressure economizer. Such boiler is improved so as to achieve maximum heat recovery regardless of whether or not sulfur oxides are contained in the exhaust gas. A bypass duct is connected to the exhaust gas passageway at a position downstream of the high-pressure economizer and upstream of the low-pressure steam generator, and dampers are disposed respectively within the bypass duct and at a position within the exhaust gas passageway downstream of the connecting point of the bypass duct and upstream of the low-pressure steam generator.

REFERENCES:
patent: 2020686 (1935-11-01), Kaiser
patent: 4693213 (1987-09-01), Yanai et al
patent: 4706612 (1987-11-01), Moreno et al.
patent: 4738224 (1988-04-01), Bruckner et al.

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