高浓度有机废液对水煤浆气化的适用性研究  

Applicability of high concentration organic waste liquid to coal water slurry gasification

作　　者：杨国辉 Yang Guohui(Yankuang Coal Water Slurry Gasification and Coal Chemical National Engineering Research Center Co.,Ltd.,Tengzhou Shandong 277527,China)

机构地区：[1]兖矿水煤浆气化及煤化工国家工程研究中心有限公司,山东滕州277527

出　　处：《煤化工》2023年第1期42-46,共5页Coal Chemical Industry

摘　　要：为实现己内酰胺车间高浓有机废水资源化利用,对废水进行了成分分析和制浆试验,并采用Aspen Plus软件模拟了添加有机废水制浆对气化运行的影响。结果表明,加入有机废水后,煤灰成分变化不明显,煤灰渣黏温曲线黏度3 Pa·s~25 Pa·s对应的温度范围由1323℃~1379℃拓宽至1244℃~1382℃;单独使用有机废水制浆,煤浆流动性有所增强,但黏度明显变低,稳定性变差,煤浆静置24 h析水率大于5.00%;通过调节废液酸碱度,并使用羧甲基纤维素钠作为稳定剂,可改善煤浆稳定性;随着有机废液使用量增加,气化温度有所降低,有效气含量略有升高,节煤量增加。In order to realize the resource utilization of high concentration organic wastewater in caprolactam plant,the wastewater composition analysis and slurry preparation test were carried out,and the impact of adding organic wastewater on gasification operation was simulated with Aspen Plus software.The results showed that after the addition of organic wastewater,the composition of coal ash did not change significantly.Regarding the coal ash slag viscosity-temperature curve,the temperature range corresponding to the viscosity of 3 Pa·s-25 Pa·s was widened from 1323℃-1379℃to 1244℃-1382℃,which was conducive to the gasification operation.When organic wastewater was used alone to make slurry,the fluidity of coal slurry was enhanced,but the viscosity was greatly lowered,and the stability was worse.The water separation rate of coal slurry in 24 h was greater than 5.00%.The stability of coal slurry could be improved by adjusting the wastewater pH and using sodium carboxymethyl cellulose as stabilizer.With the increased use of organic waste liquid,the gasification temperature decreased,the effective gas content increased slightly,and the coal saving volume increased.

关 键 词：有机废液 制浆 灰渣黏温特性 水煤浆气化 黏度 稳定性 

分 类 号：TQ536[化学工程—煤化学工程] X703[环境科学与工程—环境工程]