Fluidized bed drying process for porous materials

Details Fluidized bed drying process for porous materials Fluidized bed drying process for porous materials

1976-09-30

1978-04-25

Camby, John J.

Drying and gas or vapor contact with solids

Apparatus

With means to treat gas or vapor

432 15, F26B 308

Patent

active

040855163

ABSTRACT:
Porous, moisture-containing materials are dried in a fluidized bed reactor. The moisture content of both the underflow and carryover products from the dryer are controlled by introducing hot gases into the freeboard region above the fluidized bed. One or more tuyeres of extended length with ports at a level above the fluidized bed in the freeboard regin may be employed to admit hot gases directly into the freeboard region from the reactor windbox without traversing the fluidized bed. Alternatively, a valved conduit may be employed extending through the refractory dome or gas distributor to regulate gas flow between the windbox and the freeboard region.

REFERENCES:
patent: 2650084 (1953-08-01), White
patent: 3892538 (1975-07-01), Seth
patent: 3938259 (1976-02-01), Ormos et al.

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