Energy-saving four-duct once-setting firing tunnel kiln

Abstract

The invention discloses an energy-saving four-duct once-setting firing tunnel kiln, which comprises a burning kiln body and a drying kiln body, wherein the burning kiln body and the drying kiln body are provided with a kiln chamber respectively and are communicated through a heat delivery draught fan; the two sides of the kiln chamber of the burning kiln body are symmetrically provided with upper and lower duct layers respectively of which the upper duct layer serves as a residual heat duct and the lower duct layer serves as a draught duct; a plurality of air brakes are arranged in the residual heat duct and the draught duct and are communicated with the kiln chamber of the burning kiln body respectively; the two sides of the kiln chamber of the drying kiln body are also symmetrically provided with the upper and lower duct layers respectively of which the upper duct layer serves as a dehumidifying duct and the lower duct layer serves as a heat delivery duct; the dehumidifying duct is provided with a dehumidifying fan; and a plurality of air brakes are arranged in the dehumidifying duct and the heat delivery duct and are communicated with the drying kiln body respectively. The tunnel kiln can improve yield, reduce the coal consumption and power consumption, reduce the emission of carbon dioxide, ensure difficult kiln collapse when drying wet blanks and easy control in burning and improve the qualification rate of the product.

Description

technical field [0001] The invention relates to an industrial tunnel kiln, in particular to an energy-saving tunnel kiln with four air passages for one-time code firing. Background technique [0002] In the existing tunnel kiln for primary firing, there is only one layer of air ducts on both sides of the kiln body, the roasting kiln body only has air ducts, and the drying kiln body only has hot air ducts. Under the combined action of the unique induced air blower and the drying kiln body exhaust fan, the residual heat of the back fire of the roasting kiln body and the smoke heat of the front fire can be directly entered into the induced air duct through the induced air duct gate, and then passed through the induced air to the heat blower. The heat-supply air duct that feeds into the drying kiln body enters the kiln chamber through the air gate, passes through the billet pile from bottom to top, and is exhausted out of the kiln body by a centralized moisture exhaust fan. Thi...

AI Technical Summary

Problems solved by technology

This kind of mode has high energy consumption and low output. When drying the wet billet, it is easy to "invert the kiln", it is difficult to control when it is over-fired, and the product qualification rate is low. Own practical experience and technical concept, through research and development, and finally have the present invention

Images