Energy-saving and environment-friendly electrically calcined coal production system

Abstract

The invention provides an energy-saving and environment-friendly electrically calcined coal production system. The system comprises a furnace body, a feeding mechanism arranged at the top of the furnace body, a discharging mechanism arranged at the bottom of the furnace body, an upper electrode, a lower electrode, a water-cooling circulating mechanism, a material conveying mechanism, a material tank, a discharging bin and a dust removal mechanism. The feeding mechanism comprises a storage bin, a feeding plate and a feeding motor. The discharging mechanism comprises a discharging plate and a discharging motor. An electrode shell and a holder are arranged outside the upper electrode. A mounting base is arranged below the lower electrode. The material conveying mechanism comprises two storagehoppers and a conveyor. The dust removal mechanism comprises a bag-type dust remover and a plurality of dust removal pipelines. The electrically calcined coal after calcining is stored by the material tank, the material conveying mechanism is matched with an electric calcinator, after discharging, the electrically calcined coal does not need to be transferred and is directly conveyed out by the conveyor, cooling is achieved in the conveying process, the electrically calcined coal is directly pumped into the material tank to be stored, and complete continuous production equipment with continuous calcination, continuous discharging, continuous conveying and continuous storage is achieved.

Description

technical field [0001] The invention relates to the technical field of electric calcined coal production, in particular to an energy-saving and environment-friendly electric calcined coal production system. Background technique [0002] As an important raw material for the production of downstream carbon-containing high-quality products, electric calcined coal has excellent properties, such as low ash content, low specific resistance, and good homogeneity. Electric calcined coal is produced using a calciner. [0003] The existing calciner usually adopts two feeding ports and one or two feeding ports. In this structure, the feeding port and the discharging port are both fixed structures. material, so that the accumulation angle of the material in the calcining area of ​​the furnace body is eccentric, and the eccentricity will cause the thickness of the material accumulation between the upper electrode and the lower electrode to be uneven, and the resistance will be uneven, a...

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Problems solved by technology

[0003] The existing calciner usually adopts two feeding ports and one or two feeding ports. In this structure, the feeding port and the discharging port are both fixed structures. material, so that the accumulation angle of the material in the calcining area of ​​the furnace body is eccentric, and the eccentricity will cause the thickness of the material accumulation between the upper electrode and the lower electrode to be uneven, and the resistance will be uneven, and the uniform resistance of the material will be too large when the material is calcined, and the heat will be generated. Overweight, resulting in excessive calcination, relatively speaking, the resistance of other parts is too small, the calcination is impenetrable, and the homogeneity of the discharged product is poor, such as figure 1 shown

[0004] During the calcination process, the temperature in the calcination zone can reach above 1500°C, and the upper electrode burns faster. Most of the existing technologies use carbon electrodes, and the purchase price of carbon electrodes is very high, which becomes an important indicator of furnace body loss. Although the lower electrode is not burned, it needs to withstand the mechanical erosion of high-temperature hot material, and it is also easy to damage

[0005] In the prior art, the temperature of the electric calcined coal calcined by the electric calciner is still very high. Even if the material is cut and cooled at the discharge port, the temperature still reaches hundreds of degrees Celsius. The temperature is too high, and it enters the outdoor environment after discharge. , rich in oxygen in the air, prone to spontaneous combustion

[0006] During the transportation of electric calcined coal after calcination, there is often the problem of flying dust. These flying dust will not only pollute the environment, but also these dusts are a part of the fine particle size of electric calcined coal, which has high utilization value. The existing technology underused in

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