BOILER

BOILER

PROBLEM TO BE SOLVED: To suppress the generation of slagging, in a combustion burner.SOLUTION: A boiler comprises: a hollow furnace 11 which is installed along a vertical direction; first combustion burners 21, 22 which form a first flame swirl flow C1 by blowing first fine powdered-coal mixed air w...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: MATSUO TOMOHIRO, ARIGA TAKESHI, TOMINAGA SACHIHIRO
Format: Patent
Sprache:eng ; jpn
Schlagworte:
AIR
BLASTING
COMBUSTION APPARATUS
COMBUSTION PROCESSES
HEATING
LIGHTING
MECHANICAL ENGINEERING
METHODSOR APPARATUS FOR COMBUSTION USING FLUID FUELOR SOLID FUEL SUSPENDED IN
WEAPONS
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Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To suppress the generation of slagging, in a combustion burner.SOLUTION: A boiler comprises: a hollow furnace 11 which is installed along a vertical direction; first combustion burners 21, 22 which form a first flame swirl flow C1 by blowing first fine powdered-coal mixed air which is generated by mixing high ash melting-point fine powdered coal and combustion air into the furnace 11; and second combustion burners 23, 24 and 25 which form a second flame swirl flow C2 different from the first flame swirl flow C1 by bowing second fine powdered-coal mixed air which is generated by mixing low ash melting-point fine powdered coal and combustion air into the furnace 11.SELECTED DRAWING: Figure 1 【課題】燃焼バーナにおいて、スラッギングの発生を抑制可能とする。【解決手段】中空形状をなして鉛直方向に沿って設置される火炉１１と、高灰融点微粉炭と燃焼用空気を混合した第１微粉炭混合気を火炉１１内に向けて吹き込むことで第１火炎旋回流Ｃ１を形成する第１燃焼バーナ２１，２２と、低灰融点微粉炭と燃焼用空気を混合した第２微粉炭混合気を火炉１１内に向けて吹き込むことで第１火炎旋回流Ｃ１と旋回径の相違する第２火炎旋回流Ｃ２を形成する第２燃焼バーナ２３，２４，２５とを設ける。【選択図】図１