A dynamic calciner for powder with double outlets

Abstract

The invention discloses a dual-discharge powder dynamic calcining furnace, which comprises a calcining furnace main body (1), a raw material heater (2), a heater A (3), a vacuum cleaner A (6) and a star discharge valve A (7), cyclone separator A (9), star discharge valve B (8), heat exchanger A (10), air cooler A (11), heater B (12), heat exchanger B (19) ), air cooler B (20), cyclone separator B (14), star discharge valve C (15), vacuum cleaner B (18), star discharge valve D (16) and tail exhaust fan (17) , the heat exchanger A (10), the cyclone separator A (9) and the vacuum cleaner A (6) are connected in series in sequence, and the heat exchanger B (19), the cyclone separator B (14) and the vacuum cleaner B (18) are connected in series in sequence. The beneficial effects of the invention are as follows: the device has the advantages of small air extraction, reducing the heat carried by the exhaust gas, less material accumulation at the bottom, recovering part of the waste heat to save energy, and preventing material accumulation in the calciner.

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 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 consumption of the calciner;

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

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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