fluidized bed reactor and method of operation thereof

Details fluidized bed reactor and method of operation thereof fluidized bed reactor and method of operation thereof

1994-08-17

1996-07-09

Kamen, Noah P.

Liquid heaters and vaporizers

Miscellaneous

110245, F22B 102

Patent

active

055334717

ABSTRACT:
A fluidized bed reactor system includes a reaction chamber comprising a circulating (fast) fluidized bed, with a first grid for the introduction of fluidizing gas, and a bubbling (slow) fluidized bed having a second grid for introduction of fluidizing gas. The second grid is mounted below the first grid. First and second interconnections are provided between the circulating and bubbling beds. Particles flow from the circulating bed through the first interconnection to the bubbling bed, and vice versa for the second connection. The interconnections are positioned with respect to each other so that the pressure and density conditions within the beds are the sole mechanisms that provide the driving force to control the flow of particles from the circulating bed to the bubbling bed. An indirect heat exchanger is located in the bubbling bed for cooling particles, and various constructions of partitions may be provided for dividing up the bubbling bed and defining the interconnections, the system and method provided being greatly simplified compared to prior art constructions.

REFERENCES:
patent: 3893426 (1975-07-01), Bryers
patent: 4111158 (1978-09-01), Reh et al.
patent: 4829912 (1989-05-01), Alliston
patent: 4947804 (1990-08-01), Abdulally
patent: 4969404 (1990-11-01), Virr
patent: 5141708 (1992-08-01), Campbell et al.
patent: 5332553 (1994-07-01), Hyppanen

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