发明授权
- 专利标题: Process for removing relatively coarse-grained solids from a stationary fluidized bed
- 专利标题(中): 从固定流化床除去相对粗粒固体的方法
-
申请号: US09700358申请日: 2000-11-13
-
公开(公告)号: US06688474B1公开(公告)日: 2004-02-10
- 发明人: Martin Hirsch , Andreas Orth , Peter Weber
- 申请人: Martin Hirsch , Andreas Orth , Peter Weber
- 优先权: DE19830697 19980708
- 主分类号: B07B400
- IPC分类号: B07B400
摘要:
According to the invention, a fluidizing gas is introduced upwards into the fluidized bed (3) through a valve grid (2), said stationary fluidized bed (3) containing solids with different grain sizes. A supply pipe (10) is disposed in the area of the fluidized bed, the mouth of said pipe being located above the valve grid (2) and its outlet (12) leading outwards from the fluidized bed (3). Part of the solids located above the valve grid (2) is blown into the supply pipe by a gas jet (13) which is directed upwards and fed separately from the fluidizing gas and pneumatically evacuated from the fluidized bed through the supply pipe (10). Normally, the flow speed of the gas in the supply pipe is at least two times higher than the speed of the fluidizing gas in the fluidized bed.