Tank type calcining furnace capable of reducing carbon loss

Abstract

The invention discloses a tank type calcining furnace capable of reducing carbon loss. The tank type calcining furnace comprises a calcining furnace body, the calcining furnace body is sequentially provided with a feed inlet, a calcining cavity and a discharging pipeline from top to bottom, and the feed inlet, the calcining cavity and the discharging pipeline are in communication mutually. The discharging pipeline is provided with a cooling water sleeve, the calcining furnace body is provided with a plurality of layers of fire paths for heating the calcining cavity indirectly; the dischargingpipeline comprises a first segment and a second segment which are connected with each other, and the second segment is connected with the calcining cavity and is provided with the cooling water sleeve; the first segment is in communication with a first side branch pipeline, and the first side branch pipeline is provided with a first draught fan; and the first draught fan is used for extracting gasfrom the first segment or conveying nitrogen gas or inert gas into the first segment. According to the tank type calcining furnace capable of reducing carbon loss, an isolation segment is formed in adischarging opening by extracting air from the first segment, near the outside world, of the discharging pipeline or inputting nitrogen gas or inert gas into the first segment, so that air is prevented from entering the discharging pipeline, carbon loss caused by oxidization is reduced, and in actual process, the carbon loss can be reduced from 2%-3% to 1%-2%.

Description

technical field [0001] The invention relates to chemical technology, in particular to a tank-type calciner for reducing carbon loss. Background technique [0002] Due to the advantages of long heating time and sufficient heating, the tank calciner is currently the mainstream petroleum coke calcination equipment in my country. It uses multi-layer (generally 6-10 layers) fire channels to indirect high-temperature calcination of petroleum coke in the calcination chamber. . [0003] During calcination, the raw material is fed from the top of the calcination furnace body, and slowly moves down in the calcination furnace body by gravity. During the downward movement, it is calcined at a high temperature of up to 1200-1300 degrees Celsius, and the final product is discharged from the discharge port at the bottom of the calcination furnace body. Discharge, the temperature of the inner area of ​​the discharge port is about 200-300 degrees. Because the calcination process is complete...

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of the existing technology is that although the carbon loss of petroleum coke production is small, there is still room for further reduction, and the existing technology has not taken corresponding reduction measures

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