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Main areas and thermal system design of tunnel kiln

2025-06-07

1. Main structural design

The structure of a tunnel kiln usually includes three main areas: preheating zone, firing zone and cooling zone. The preheating zone is mainly used for drying and preheating the blank, the firing zone is the key area for achieving physical and chemical changes in the material, and the cooling zone is used to gradually reduce the temperature of the product to avoid cracking or deformation. The length and temperature gradient of each zone need to be reasonably allocated to ensure the maximum utilization of heat energy in the entire kiln.

The masonry materials of the kiln body are also crucial. In order to reduce heat loss and improve the insulation effect, thermal insulation materials such as lightweight high-alumina bricks and aluminum silicate fibers are usually used. In addition, the design of the kiln car and its sealing device also needs to be optimized to prevent heat leakage and extend the service life of the equipment.

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2. Thermal system design

The thermal system is the core part of the tunnel kiln, including the combustion system, smoke exhaust system and waste heat recovery device. The layout of the combustion system directly affects the uniformity of the temperature field in the kiln. Usually, multi-point combustion is adopted, and the temperature is accurately controlled by adjusting the power and position of the burner.

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Henan Ruiyao Intelligent Environmental Protection Co., Ltd

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