Integrated Mathematical Model of Pulverised Coal Combustion in a Blast Furnace
スポンサーリンク
概要
- 論文の詳細を見る
The shortage of coke production due to the closure of coke ovens has led in Japan and other industrialised countries to increasing the injection of auxiliary fuels, e.g. pulverised coal (PC) into blast furnace tuyeres. The PC injection at high rates of more than 200 kg/t requires high burnout within the raceway zone. In order to analyse flow and combustion in the raceway and to assist improvement of burner design, a two-dimensional mathematical model of PC combustion has been developed with simulating both the blowpipe and raceway. Effects of a packed bed on the turbulent features of gas and particulate flow were introduced to the model along with all other pertinent phenomena such as heterogeneous reactions of coke and char particles. Validation work against measurements in two industrial blast furnaces indicated that the model has worked satisfactorily for simulation with and without PC injection. Various measures for burnout improvements were explored under an injection rate of 200 kg/tHM. Notable improvements were observed by oxygen enrichment to the secondary air and enlargement of the outer diameter of the injection burner.
- 社団法人 日本鉄鋼協会の論文
- 1997-05-15
著者
-
Lockwood F.
Imperial College Of Science Technology And Medicine
-
Takeda Kanji
Research Laboratories Kawasaki Steel Corporation
関連論文
- 乱流モデルを用いた充填層内のガス流れの計算
- 確率過程を用いた充填層内での粉体の流動と分散モデル
- Integrated Mathematical Model of Pulverised Coal Combustion in a Blast Furnace