Fluidized bed apparatus and process for feeding gas to a...

Details Fluidized bed apparatus and process for feeding gas to a... Fluidized bed apparatus and process for feeding gas to a...

B - Operations, Transporting

01

J

23/370, 23/423

B01J 8/24 (2006.01) B01J 8/18 (2006.01) B01J 8/44 (2006.01) C08F 2/34 (2006.01) C08F 10/00 (2006.01)

Patent

CA 1333325

A fluidized bed apparatus (1) having a fluidization grid (2) below which is positioned a tuyere (5) for guiding fluidization gas to the fluidization grid (2). The tuyere (5) comprises a widening pipe the wider end (6) of which is positioned towards the fluidization grid (2) and has an area which is substantially the same as the cross-sectional area of the fluidized bed apparatus (1) and is 2 to 30 times that of the area of the narrower end (7) of the widening pipe. The process for feeding fluidization gas to a fluidized bed using such apparatus enables a good gas distribution across the bed to be achieved with a modest additional pressure drop. The invention is particularly useful for apparatus e.g. greater than 3 m in diameter.

570735

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