摘要
对预热催化氧化装置氧化床的温度分布均匀性进行了实验研究,在热平衡状态下研究了空速、进气温度和体积分数对氧化床温度场均匀性的影响。实验结果表明:氧化床在催化氧化时间段内的温度明显比加热启动段要均匀;氧化床内部在加热启动段内的温度不均匀系数由前至后越来越低,而在催化氧化段内的温度不均匀性系数先降低再升高;进气温度对氧化床温度分布均匀性的影响最为明显,氧化床的温度分布均匀性随进气温度的提升明显改善,而较高的空速和较低的进气体积浓度会减缓温度不均匀性系数随进气温度的变化速率。以上研究成果为预热催化氧化装置的优化设计和性能提升提供理论参考。
The temperature distribution uniformity of preheating catalytic oxidation reactor was experimentally investigated and the effects of space velocity,inlet gas temperature and methane volume concentration on the temperature distribution uniformity of oxidation bed in thermal equilibrium states were studied. The experimental results show that the temperature distribution uniformity is obviously better during catalytic oxidation period than that during heating startup period. Inside the oxidation bed,the temperature distribution uniformity coefficient becomes lower and lower from front to back during heating startup period,and however decreases first and then increases from front to back during catalytic oxidation period. The inlet gas temperature is the main influencing factor and the temperature distribution uniformity is improved significantly with the increase of inlet gas temperature,while the high space velocity and low inlet methane volume concentration will slow down the improvement of temperature distribution uniformity with the increase of inlet gas temperature. The above results provide a theoretical guidance on the design optimization and performance improvement of the preheating catalytic oxidation reactor.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2015年第1期109-114,共6页
Journal of China Coal Society
基金
国家高技术研究发展计划(863)重点资助项目(2009AA063202)
山东省科技发展计划资助项目(2012GGX10417)
山东省自然科学基金资助项目(ZR2013EEQ008)
关键词
预热催化氧化
煤矿乏风
氧化床
温度分布均匀性
空速
preheating catalytic oxidation
coal mine ventilation air methane
oxidation bed
temperature distribution uniformity
space velocity
