平炉の空気力学的構成(III)
下炉の機能
1957 年 43 巻 2 号 p. 117-121
詳細
1957 年 43 巻 2 号 p. 117-121
Studies with two-and three-dimensional models made clear the followings concerning fundamental features of the flow and the flow in lower furnaces:-
(1) The flow turning angle, corner, projection or hollow spot behaves as if it 'knows where it is going1)'. In the dead spots of the flow secondary vortices appear.
(2) A main flow in the slag pocket passes curving in the upper space of it and threedimensional vortices occupy the space under the main flow. The curving flow and vortices separate dusts.
(3) The fantail does not play the role of flow equalizer. It is better to decline the fantail roof toward the checker chamber in order to distribute outgoing flow uniformly to the checker and to send unbiased incoming air to the air-uptakes.
(4) The flow into the checker chamber inclines to pass through the farther side of the chamber. This inclination is rectified effectively by deflectors as shown in Fig. 10 (c), (d). Double path checker chambers answer the purpose also.
