Energy-saving and consumption-reducing combustion process of alkali recovery medium-pressure furnace

The invention discloses an energy-saving and consumption-reducing combustion process of an alkali recovery medium-pressure furnace. Semi-concentrated black liquor passes through a III-effect evaporator, a II-effect evaporator and a I-effect evaporator, the output concentration is controlled to be 60...

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Bibliographic Details
Main Authors CHEN YUANGONG, CHEN QINGHAN
Format Patent
LanguageChinese
English
Published 28.12.2021
Subjects
BLASTING
DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE
FURNACES
HEATING
KILNS
LIGHTING
MECHANICAL ENGINEERING
OVENS
RETORTS
WEAPONS
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Summary:The invention discloses an energy-saving and consumption-reducing combustion process of an alkali recovery medium-pressure furnace. Semi-concentrated black liquor passes through a III-effect evaporator, a II-effect evaporator and a I-effect evaporator, the output concentration is controlled to be 60%-62%, the semi-concentrated black liquor is sent to an alkali furnace mixing tank to be mixed with alkali gray mirabilite, then the semi-concentrated black liquor is sent back to a high-concentration-effect pressure evaporator to be evaporated, the output concentration of high-concentration black liquor is controlled to be 70%-75%, the output concentration temperature of the high-concentration black liquor is controlled by adjusting the opening degree of a valve of a flash tank of the high-concentration-effect pressure evaporator, so that the output concentration temperature is controlled to be below the boiling point of the output concentration, and then the high-concentration black liquor is sent to a high-conce
Bibliography:Application Number: CN202111145732