A tunnel kiln device and application for recovery of waste heat from calcium carbide boiler

Abstract

The invention belongs to the field of tunnel kiln waste heat recovery and relates to a tunnel kiln device for recovering waste heat from a calcium carbide pot and an application. The device comprises a kiln car track, a medium temperature chamber and two high temperature chambers, wherein kiln cars enter the medium temperature chamber through the kiln car track, then enter the high temperature chambers from the medium temperature chamber and are forcibly cooled through tuyeres of external air blowers, hot air is discharged into high temperature air channels through hot air outlets in the top centers of the high temperature chambers, the kiln cars are cooled to a certain temperature and then pushed out through the medium temperature chamber, and the medium temperature chamber aims at preventing the outside from communicating with the high temperature chambers and preventing loss of heat. The tunnel kiln device has the beneficial effects as follows: the provided waste heat recovery device can recover a large amount of heat, and effects of energy conservation and emission reduction are realized; the medium temperature chamber is used for separating the outside from the high temperature chambers, and loss of heat is reduced; the tuyeres are controlled by the temperature to be opened and closed, and accordingly, the comprehensive benefit of electric energy utilization and waste heat recovery is improved.

Description

technical field [0001] The invention belongs to the field of tunnel kiln waste heat recovery and relates to a tunnel kiln device used for recovery of calcium carbide boiler waste heat. Background technique [0002] The main component of calcium carbide is calcium carbide, which plays an important role in industrial production. It is mainly used to add water to produce acetylene gas, organic synthesis, and release a lot of heat at the same time. Calcium carbide production methods include aerobic thermal method and electrothermal method. Generally, the electrothermal method is used to produce calcium carbide, that is, quicklime and carbon-containing raw materials (coke, anthracite or petroleum coke) are placed in the calcium carbide furnace, and calcium carbide is generated by arc high-temperature melting reaction (melting temperature is as high as 2300 ° C). At present, the main problem faced by the calcium carbide factory is the serious waste of waste heat. The high-tempera...

AI Technical Summary

Problems solved by technology

At present, the main problem faced by the calcium carbide factory is the serious waste of waste heat. The high-temperature molten calcium carbide is put into the calcium carbide pot and relies on natural cooling, resulting in a great waste of high-temperature waste heat in the calcium carbide pot. The heat and remaining energy will bring a lot of economic losses.

[0003] However, no one has officially proposed a tunnel kiln device specially used for recovery of calcium carbide boiler waste heat. For this reason, referring to the waste heat recovery process of industrial kilns, the patent of this invention establishes a tunnel kiln waste heat recovery device to melt the waste heat of the calcium carbide cooling process at high temperature Recycle

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