摘要
通过对炼焦过程产生的多环芳烃(PAHs)和NOx浓度进行监测,得到PAHs和NOx的产生规律及其产生的相关性.结果显示,PAHs主要在煤的升温阶段产生,在结焦初期的1h～3h产生的多环芳烃最多,整个炼焦过程中的产生量逐渐减少;随炼焦时间延长,NOx浓度先增大后减小,在最初的第4h～第6h出现峰值;在炼焦过程前期,PAHs和NOx的产生量呈负相关性,通过指数拟合,得到不同煤种和配煤情况下PAHs与NOx最大产生量的关系式.
The generation chatacteristic and the relativity of polycyclic aromatic hydrocar- bons（PAHs） and nitrogen oxide（NO.） were obtained by monitoring their generation in coking. The results show that the amount of PAHs mainly generated at the stage of coal temperature in- creasing is the maximum at the beginning 1 h-3 h of coking and is gradually reduced in the whole coking process. With the time prolonging the amount of NO~ generated which peak value oc- curred at the stage from the fourth h to the sixth h is increased firstly and then reduced. The a- mounts of PAHs and NO~ generated at the beginning stage have a negtive correlation and the re- lation of maximum amounts between PAHs and NOx for different coals and different blended coals was obtained by fitting an exponential curve.
出处
《煤炭转化》
CAS
CSCD
北大核心
2009年第4期66-69,共4页
Coal Conversion
基金
长江学者和创新团队发展计划项目(IRTO708)
