一种测定光催化反应器中紫外光辐射能的新方法

A NEW METHOD OF DETERMINATION OF THE DISTRIBUTION OF UV LIGHT IN PHOTOCATALYTIC REACTOR

设计了一种利用光导纤维测定多相光催化反应器中紫外光辐射能的新方法,并系统地研究了影响光催化反应器中紫外光辐射能分布规律的各种因素。结果表明:光催化剂对紫外光辐射能的吸收和阻挡作用较大,其紫外光辐射能量与在反应器中的穿透距离之间的关系可用一指数方程表示,Y=8 98exp(-1 1408X)。紫外光辐射能在反应器中轴向上的分布是不均匀的,在反应器的中间处最强,而在反应器上、下两部分则较小。

A new method of determination of the distribution of UV light radiant energy was studied by fiber-optic and raster-spectrometer in heterogeneous photocatalytic reactor.The experimental results showed that the adsorption and obstruction function of photocatalyst to the distribution of ultraviolet light relative radiant energy is stronger than other factors. The attenuation model can be expressed by an exponential equation: Y=8.98exp((-1.1408X)).The distribution of UV light radiant energy is not well-distributed at the axial of the reactor. The UV light radiant energy is the strongest at the middle of the reactor.