PREHEATED GAS BLOWING DEVICE AND PREHEATED GAS BLOWING METHOD TO BLAST FURNACE SHAFT PART, AND BLAST FURNACE OPERATING METHOD

• Main Authors: NOUCHI TAIHEI, KAWAJIRI YUKI, OZAWA SUMIHITO, TAKAHASHI KOICHI
• Format: Patent
• Language: English; Japanese
• Published: 23.08.2018
• Subjects: BLASTING; CHEMISTRY; 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; MANUFACTURE OF IRON OR STEEL; MECHANICAL ENGINEERING; METALLURGY; METALLURGY OF IRON; OVENS; RETORTS; WEAPONS

PROBLEM TO BE SOLVED: To provide a preheated gas blowing device and a preheated gas blowing method to a blast furnace shaft part, capable of blowing preheated gas appropriately adjusted in temperature to a blast furnace.SOLUTION: A preheated gas blowing device to a blast furnace shaft part includes: a pressure increasing machine for increasing pressure of blast furnace gas; a combustion furnace for generating preheated gas by combusting the blast furnace gas increased in pressure; a storage chamber for storing the preheated gas generated in the combustion furnace; a dilution gas flow channel for supplying dilution gas to the storage chamber; and a receiver tank as an annular tube provided so as to surround the blast furnace shaft part. The receiver tank is connected to the storage chamber and a plurality of gas blowing nozzles installed in the circumferential direction of the blast furnace shaft part.SELECTED DRAWING: Figure 1 【課題】適切に温度が調整された予熱ガスを高炉に吹込むことができる、高炉シャフト部への予熱ガス吹込み装置および予熱ガス吹込み方法を提供する。【解決手段】高炉シャフト部への予熱ガス吹込み装置であって、高炉ガスを昇圧する昇圧機と、昇圧された高炉ガスを燃焼して予熱ガスを生成する燃焼炉と、燃焼炉で生成された予熱ガスを貯蔵する貯蔵室と、貯蔵室に希釈ガスを供給する希釈ガス流路と、高炉シャフト部を囲むように設けられた環状管であるレシーバータンクと、を有し、レシーバータンクは、貯蔵室と、高炉シャフト部の円周方向に設置された複数のガス吹込みノズルとに接続されている。【選択図】図１