冷流式有机气体催化氧化研究

对二甲苯气体的冷流式催化氧化工艺进行的研究表明:当二甲苯浓度为16.71g/m~3,空速为7083h~(-1)时,不需辅助热量,靠反应热可以维持反应的进行,催化氧化反应的主要影响因素是催化床温度,只要维持床温在240℃以上,二甲苯温度在1—16.71g/m~3范围内,不预热气体可在较低的进气温度下实现催化氧化反应。

Research on Catalytic Oxidation of Organic Vapors by Unheated Stream

This paper focuses on the process and mechanism of catalytic oxidation of xylene vapor by unheated stream. The results demonstrate that the process of catalytic oxidation by unheated stream is possible, and the reaction may be maintained by reaction heat without auxiliary heat required at the xylene concentration of 16.71 g/m³ and the volumetric velocity of 7083 h^-1. The main factor affecting the catalytic oxidation is the temperature of catalyst bed, and the reaction can be realized at a low temperature(about 513k)of inlet stream containing orgainc vapor by the concentration of 1-16.71 g/m³. Comparing with the process by heated inlet stream, the catalytic oxidation process by unheated stream is characterized by relatively lower temperature of catalyst bed and. the outlet stream, less time and less power required for starting the system, and easily controlling the temperature of the catalyst bed.