Experimental study on emission control of premixed catalytic combustion of natural gas using preheated air

Abstract

Abstract: In this paper the premixed catalytic combustion emissions such as CO, unburned hydrocarbon (UHC), NOx and the temperature distribution in the catalytic monolith with ultra low concentration of Pd were studied. Three types of monoliths were used for experiments and the temperature of preheated air was respectively 50℃, 100℃ and 200℃. The results showed that preheated air made radial temperature in the catalytic monolith uniform which helped to avoid local hot spots so as to decrease NOx emission. The experiment also proved that the shorter monolith showed much better catalytic combustion performance than longer one and the temperature at the exit of the shorter monolith was relatively lower. On the contrary, the temperature was higher in the longer monolith and the lethal NOx emission was slightly increased.

Key words: catalytic combustion, preheated air, natural gas, emission

摘要： In this paper the premixed catalytic combustion emissions such as CO, unburned hydrocarbon (UHC), NOx and the temperature distribution in the catalytic monolith with ultra low concentration of Pd were studied. Three types of monoliths were used for experiments and the temperature of preheated air was respectively 50℃, 100℃ and 200℃. The results showed that preheated air made radial temperature in the catalytic monolith uniform which helped to avoid local hot spots so as to decrease NOx emission. The experiment also proved that the shorter monolith showed much better catalytic combustion performance than longer one and the temperature at the exit of the shorter monolith was relatively lower. On the contrary, the temperature was higher in the longer monolith and the lethal NOx emission was slightly increased.

关键词: catalytic combustion;preheated air;natural gas;emission

XU ,Kao, LIU ,Zhongliang, HE ,Hong, CHENG ,Shuiyuan, MA ,Chongfang. Experimental study on emission control of premixed catalytic combustion of natural gas using preheated air[J]. .

许考, 刘中良, 何洪, 程水源, 马重芳. 使用加热空气的预混天然气催化燃烧的实验研究[J]. CIESC Journal.

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Experimental study on emission control of premixed catalytic combustion of natural gas using preheated air

使用加热空气的预混天然气催化燃烧的实验研究

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