浸渍活性炭燃点影响因素研究

Study on Factors Affecting the Ignition Point of Nuclear Grade Activated Carbon

本文以椰壳活性炭为基材,研究了浸渍剂TEDA含量、KI含量、风速、堆积体积对燃点的影响规律,并利用均匀性试验设计建立数学模型,对改性活性炭燃点进行燃点预测以及实验验证。结果表明:TEDA浸渍后的活性炭燃点低于基炭,随着TEDA含量的升高,活性炭燃点收敛于335℃;少量的KI能够显著降低活性炭的燃点,但随着KI浸渍比例的再升高,其燃点有所升高,但不会高于基炭;燃点随通过活性炭层空气流速和堆积体积的增大而降低。均匀性试验设计得到的回归方程燃点计算值与实际测量值具有较好的一致性,可以利用此方程在一定范围内对燃点进行预测。

In this paper,coconut-based activated carbon was used as the substrate to study the influence of impregnation agent TEDA content,KI content,air flow rate,and volume of activated carbon on the ignition point of activated carbon.In addition,the mathematical model was established by using the uniform design,and the ignition temperature of impregnation activated carbon was predicted and verified.The results show that the ignition point of activated carbon after TEDA is lower than the initial carbon.With the increase of TEDA content,the ignition temperature of activated carbon converges to 335°C.A small amount of KI can significantly reduce the ignition temperature of activated carbon,but with the increase of KI content.The ignition temperature is raised,but it is not higher than the initial activated carbon.The ignition temperature decreases as the air flow rate increase which through the activated carbon layer.And the ignition temperature decreases as the volume of activated carbon increase.The regression equation obtained by the uniformity design and has a high consistency with the actual measured value,and the equation can be used to predict the ignition point within a certain range.