INTRODUCTION

Combustion chamber is a commonly seen part in rotary kiln, wood chip dryer and other machines, which enjoys the remarkable advantages of high thermal efficiency, full combustion, environmental protection and energy consumption, etc. In order to exert the greatest value of combustion chamber, you should notice the following points. The excess air coefficient should be controlled rationally, since it can improve the inside temperature of furnace. If the temperature in furnace is relatively high, the igniting and burning process of coal powder would be accelerated. While compared with the burning process of volatile matter, char particles are burned very slowly.

The reason for slow burning of char particles is that their surface is covered with combustion products, which impedes the diffusion process of oxygen molecule to char particles. Besides, the oxygen content around the char particles steadily decreases. In order to accelerate the diffusion speed of oxygen, you can intensify the flowing process of air. In a word, proper control of excess air coefficient and sufficient oxygen content are the premises for rapid and complete combustion of coal powder. By virtue of high working efficiency, reliable operation, high thermal efficiency and easy maintenance, Dingli wood shavings dryer is more and more popular since it comes to birth.

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