Energy-saving ceramic tunnel kiln

Abstract

The invention provides an energy-saving ceramic tunnel furnace. A kiln body is provided with a peheating zone, a clinkering zone and a cooling zone, wherein the clinkering zone is vertically provided with two baffle walls at two ends of a high-temperature zone of between 1,300 and 1,380 DEG C, and the baffle walls are fixed on a kiln top by using a metal hanging piece; the upper part of the high-temperature zone is isolated from the upper parts of other temperature zones, so that the temperature of the high-temperature zone is relatively stable, the temperature of the upper and lower parts is more uniform, and thus the tunnel kiln is favorable for sintering products and saving fuel gas. A combustion system is controlled by adopting full-automatic air / fuel ratios, the fuel gas and combustion air enter a fuel gas burner through precise control and mixing to be combusted in the kiln completely, so that the highest heat value is obtained, surplus air is prevented from entering the kiln, and fuel is saved. A smoke exhaust fan and a combustion fan are controlled by adopting frequency control of motor speed, so that the stability of kiln pressure, the pressure of the combustion air and sintering atmosphere is maintained, the quality of the products is improved and electricity is saved.

Description

technical field [0001] The invention relates to a ceramic kiln, in particular to an energy-saving ceramic tunnel kiln. Background technique [0002] Tunnel kiln is a continuous production kiln with horizontal airflow, which is widely used in the firing process of daily-use ceramics. In particular, the tunnel kiln fueled by liquefied petroleum gas has been widely promoted because of its high firing yield and stable quality. However, the daily-use ceramics industry is a high-energy-consuming industry, and the energy consumption cost accounts for 30-40% of the ceramic production cost, and the energy consumption of the firing process accounts for 70-80% of the total energy consumption of production. It is always a key issue in reducing production costs in ceramic production. Although the existing ceramic tunnel kilns have taken many measures for energy saving, there are still uneven temperatures in the firing zone of the kiln body, resulting in high stress on the product, easy...

AI Technical Summary

Problems solved by technology

Although the existing ceramic tunnel kilns have taken many measures for energy saving, there are still uneven temperatures in the firing zone of the kiln body, resulting in high stress on the product, easy to cause cracking and prolonging the firing time, and the gas burner does not work properly. When the mixture of combustion-supporting air and fuel does not reach the optimal ratio, it will affect the combustion efficiency and some other areas that need improvement

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