摘要
由于在加压降温资源化回收过程中,烟气中氮氧化物和水会产生亚硝酸,但高压系统中亚硝酸的生成量尚未被直接检测,采用差分吸收光谱法测量亚硝酸的质量浓度,并通过气相和液相实验以获得气液中含氮物质的质量守恒规律。结果表明:随着压力的升高,在气相反应中,NO转化率明显增大,在气液反应中,NO生成亚硝酸的质量浓度略微减小;反应前后含氮物质的质量守恒误差小于10%;在实验结束吹扫N_2时,随着压力的升高,溶液中解析出的亚硝酸量略微减小。
To solve the problem that direct detection can not be realized for the nitrous acid（HONO）converted from NOx during flue gas resource recovery using pressuring and cooling technologies,the differential optical absorption spectroscopy（DOAS）was used to measure the HONO concentration,while gas phase and liquid phase experiments were conducted to find the mass balance law of molecular nitrogen.Results show that the conversion rate of NO increases with the rise of reaction pressure in gas phase experiments,while the conversion rate of NO to HONO reduces slightly in liquid phase experiments.The relative error in mass balance of nitrogen related species is less than 10%in both gas and liquid phase.At the end of experiments in N2 sweeping period,with the increase of pressure,the amount of HONO from desorption of solutions decreases slightly.
作者
于帅帅
刘敦禹
陈军
YU Shuaishuai;LIU Dunyu;CHEN Jun(Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering,School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)
出处
《动力工程学报》
CAS
CSCD
北大核心
2018年第9期725-731,共7页
Journal of Chinese Society of Power Engineering
基金
上海市浦江人才资助项目(16PJ1407900)
国家自然科学基金资助项目(91544225
51676130)
