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Effects of Temperature Uniformity of Radiant Tube on Firebox

In order to study the effect of the radiant tube and the influence of combustion power on temperature uniformity of the firebox,an experiment was set up with a forced air blast burner to obtain the temperature variation of the firebox before and after installing a radiant tube in the heater. Based on the Heater in Daqing Oilfield,this experiment was carried out by comparing the temperature variations before and after the radiant tube installation and at different powers. Results illustrate that after installing the radiant tube,the highest temperature difference of the firebox will drop to 49% at 400 k W and 48 % at 700 k W respectively. And the temperature uniformity of the firebox is obviously better than before,which decreased the risk of burning loss of the firebox greatly. The temperature of the firebox increases with the increasing powers,and the distribution trend of the temperature is consistent.