多种改性USY分子筛在煤热解生成单环芳烃中的作用研究  

he Role of Various Modified USY Molecular Sieves in the Generation of Monocyclic Aromatic Hydrocarbons from Coal Pyrolysis

作　　者：韩蕙宇 程序 梁博[1] 范江 HAN Huiyu;CHENG Xu;LIANG Bo;FAN Jiang(Shaanxi Polytechnic Institute,Xianyang,Shaanxi 712000,China)

机构地区：[1]陕西工业职业技术学院,陕西咸阳712000

出　　处：《自动化与仪器仪表》2024年第5期38-41,45,共5页Automation & Instrumentation

基　　金：校级课题《陕北煤定向热解生成单环芳烃的机理研究》(2023YKYB-011);陕西省教育厅一般专项科研计划项目(23JK0313)。

摘　　要：为了增加煤热解反应中单环芳烃的生产量,此次设计了一种面向煤热解反应的Fe、Mo双组分改良超稳态Y型分子筛催化剂和基于改进反向传播算法的煤热解反应预测模型。测试显示,预测模型在测试中RMSE小于10.0数据组的累计样本占比为72.0%,高于对比模型。该模型能更准确预测煤热解反应,使用它调整实验中的参数。实验结果显示,Fe_(2)O_(3)浸渍量越大,反应后的单环芳烃含量越高,当Fe_(2)O_(3)浸渍量为9%时,对应焦油中单环芳烃含量为7.20%,高于所有对照组,且在实验开始后第37 s即完成热解,也短于所有对照组。实验结果说明,此次设计的改性分子筛能起到提高煤热解单环芳烃产量的作用。In order to increase the production of monocyclic aromatic hydrocarbons in coal pyrolysis reactions,a Fe and Mo dual component improved metastable Y-type molecular sieve catalyst for coal pyrolysis reactions and a coal pyrolysis reaction prediction model based on improved backpropagation algorithm were designed.The test showed that the cumulative sample proportion of the prediction model in the test group with RMSE less than 10.0 was 72.0%,higher than the comparison model.This model can more accurately predict coal pyrolysis reactions and use it to adjust the parameters in the experiment.The experimental results showed that the larger the Fe_(2)O_(3) impregnation amount,the higher the content of monocyclic aromatic hydrocarbons after the reaction.When the Fe_(2)O_(3) impregnation amount was 9%,the corresponding monocyclic aromatic hydrocarbon content in the tar was 7.20%,higher than all control groups,and the pyrolysis was completed at 37th seconds after the experiment began,which was also shorter than all control groups.The experimental results indicate that the modified molecular sieve designed in this design can play a role in increasing the yield of monocyclic aromatic hydrocarbons during coal pyrolysis.

关 键 词：超稳态Y型分子筛 煤热解 单环芳烃 反向传播 反应预测 

分 类 号：TQ530.2[化学工程—煤化学工程]