Double-discharging dynamic powder calcining furnace

Abstract

The invention discloses a double-discharging dynamic powder calcining furnace. The double-discharging dynamic powder calcining furnace comprises a calcining furnace body (1), a raw material heating device (2), a heater A (3), a dust collector A (6), a star-shaped discharging valve A (7), a cyclone separator A (9), a star-shaped discharging valve B (8), a heat exchanger A (10), an air cooler A (11), a heater B (12), a heat exchanger B (19), an air cooler B (20), a cyclone separator B (14), a star-shaped discharging valve C (15), a dust collector B (18), a star-shaped discharging valve D (16) and a tail exhaust fan (17). The heat exchanger A (10), the cyclone separator A (9) and the dust collector A (6) are sequentially connected in series. The heat exchanger B (19), the cyclone separator B (14) and the dust collector B (18) are sequentially connected in series. The double-discharging dynamic powder calcining furnace has the advantages that the sucking rate is small, heat taken away by exhaust can be reduced, less materials are accumulated at the bottom, partial waste heat can be recycled, energy is saved, and no material is accumulated in the calcining furnace.

Description

technical field [0001] The invention relates to a calciner, in particular to a dynamic calciner for powder with double discharges. Background technique [0002] The powder raw materials to be calcined in the fluidized calciner and swirling flow dynamic calciner under the existing technical conditions are all fed from the lower part of the calciner, and the calcined finished product is drawn out from the upper part of the calciner through the tail-mounted induced draft fan. This calcination method has the following disadvantages: [0003] 1. Since the calcination furnace has a certain height, it takes a lot of energy to transport a large amount of materials from the bottom of the furnace to the top of the furnace; [0004] 2. Since a large amount of carrier air needs to be added to transport a large amount of materials from the lower part of the calciner to the upper part, the total exhaust volume of the entire calciner will increase a lot, thus increasing the energy consump...

AI Technical Summary

Problems solved by technology

[0003]1. Since the calcination furnace has a certain height, it takes a lot of energy to transport a large amount of materials from the furnace bottom to the furnace top;

[0004]2. Since it is necessary to increase a large amount of carrier air to transport a large amount of materials from the lower part of the calciner to the upper part, the total exhaust volume of the entire calciner is increased a lot, so that Increased energy consumption of the calciner;

[0005]3. Due to the particle size and humidity of the calcined material, the bottom of the calcined furnace will easily accumulate material;

However, the increase in the total exhaust volume of the calciner will reduce the concentration of carbon dioxide in the tail gas, and this industry cannot use the traditional boiling calciner or swirling flow dynamic calciner for calcining

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