聚乙烯醇对型煤热解的影响研究

Effect of Polyvinyl Alcohol on Pyrolysis of Briquette

摘要:

以PVA为粘结剂与粉煤混合制成型煤，在热重分析仪上进行热解。实验数据表明：随着PVA含量的增加，R增大，反应速率加快，且低位发热量增大。通过FTIR光谱、BET、工业分析等方法分析说明，PVA的加入，增加了型煤的微孔结构，提高了燃料层间的传热和传质；型煤中羟基含量增多，促进了热解过程中苯酚的生成，使气态产物CO含量增多。

Abstract:

The influence of PVA on the pyrolysis was studied from macro and micro angles. In this paper, briquette pyrolysis was operated with thermal analyzer. The experimental data showed that with the increase of PVA content, the R value, the reaction rate and the low calorific value increased. The FTIR spectrum, BET, industrial analysis and quantum chemical analysis were described that the addition of PVA was advantage to briquette pyrolysis. The number of micropores was increased and the heat and mass transferation was improved among the fuel layer with the addition of PVA.