B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 8/24 (2006.01) B01J 8/18 (2006.01) B01J 8/38 (2006.01) F22B 31/00 (2006.01) F23C 10/02 (2006.01) F23C 11/02 (1995.01)
Patent
CA 2158846
A reactor chamber (12, 112, 312) of a fluidized bed reactor (10) has an internal circulation of particles. Larger recirculated particles are prevented from contacting heat transfer surfaces (40, 140) by classifying particles adjacent the bottoms (24, 124, 224) of the reactor chamber (12, 112, 312) using a particle chamber (22, 122, 222, 322) having a barrier wall (30, 130, 230, 330) with holes (50) or slots (52) of a maximum dimension of less than about 30 mm. The heat transfer surfaces (40, 140) may be disposed in the particle chamber (22, 122, 222, 322). Larger particles flow down the walls of the particle chamber into the reactor chamber, and some fine particles within the particle chamber are preferably recirculated back to the fluidized bed. The barrier wall is preferably the top wall of the particle chamber, and may be refractory lined with furrows (54), and/or may be formed of water tubes (64) connected together by fins (66), with the holes or slots formed in the fins.
Foster Wheeler Energia Oy
Gowling Lafleur Henderson Llp
LandOfFree
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