陶瓷梭式窑天然气掺氢燃烧特性的研究与应用  

Key Technologies of Hydrogen Doped Low Carbon Combustion in Ceramic Shuttle Kiln and Their Applications

作　　者：陆琳 李文琪 冯青 汤永智 蓝艺 LU Lin;LI Wenqi;FENG Qing;TANG Yongzhi;LAN Yi(Jingdezhen Ceramic University,Jingdezhen 333403,Jiangxi,China)

机构地区：[1]景德镇陶瓷大学,江西景德镇333403

出　　处：《陶瓷学报》2024年第3期468-474,共7页Journal of Ceramics

基　　金：江西省重大科技研发专项(20214ABC28W003);大学生创新创业项目(S202310408035)。

摘　　要：陶瓷烧制过程消耗的能源以及排放的污染物较多。天然气作为目前烧制陶瓷的主要燃料,其主要成分为甲烷,与煤炭、石油相比,虽属于清洁能源,但是其燃烧过程仍会产生NO、NO_(2)等污染物。为实现国家“双碳”目标,系统研究了窑炉燃烧过程中掺氢对燃烧的影响。通过研究五种不同的掺氢比例对于窑炉整体燃烧的影响,发现氢气的加入会促进燃烧使得窑炉内温度上升200 K,并且随着氢气含量的提升,·O、·OH、·H这类促进燃烧的自由基产生速率提高。氢气的加入会促进窑炉内部NO的产生,也会抑制窑炉内部NO_(2)的产生。氢气的加入并不会改变燃烧本身的性质,即燃烧仍是以CH链氧化为主的燃烧反应。结果显示,最优掺氢比例为40%。In ceramic production process,the firing process consumes the largest proportion of energy and emits pollutants.Natural gas is currently the main choice in the firing process.Although methane,the main gas component,is a clean energy,as compared with traditional carbon and oil,pollutants(such as NO_(2))could be produced.In response to carbon peaking and carbon neutrality goals,we focused on the effect of hydrogen doping on combustion during kiln firing.Using five hydrogen doping ratios,the effect of hydrogen on overall combustion of the kiln was clarified.It is concluded that the addition of hydrogen would promote combustion,increase the temperature in the kiln by 200 K,and increase the production rate of free radicals(such as·O,·OH,and·H),with increasing content of hydrogen.The addition of hydrogen would promote the production of NO in the kiln,but the production of NO_(2)could be inhibited.The addition of hydrogen does not change the properties of the combustion,which is still a combustion reaction dominated by C-H chain oxidation.The optimal hydrogen doping ratio in the kiln was 40%.

关 键 词：甲烷 氢气 清洁燃烧 陶瓷窑炉 

分 类 号：TQ174.65[化学工程—陶瓷工业]