生活污泥与煤泥混合燃烧利用与混合黏度特性研究

用沙子与泥土按一定比例混合，增强保水性 #生活技巧# #园艺种植技巧# #土壤调理方法#

摘要:为了实现生活污泥与煤泥的混合利用，对生活污泥和煤泥混合后的燃烧性能、积灰结渣特性和黏度特性进行了综合研究。结果表明，随着生活污泥掺混比的增加，生活污泥和煤泥混合样品的着火点温度逐渐降低，燃烧特性指数逐渐升高，着火稳定性指数从生活污泥掺混比为3.95%时开始高于煤泥并且逐渐增加；当生活污泥添加比例<8.75%时，生活污泥的添加对煤泥的灰熔融温度影响较小。生活污泥掺混比由0增加到8.75%，湿生活污泥和湿煤泥混合样品的黏度逐渐增加；在湿生活污泥和湿煤泥混合样品的含水率为45%时，湿生活污泥的掺比过高会导致混合样品的黏度变化幅度变大，将会增大输送系统的压力。为了能够实现湿生活污泥和湿煤泥混合输送进入锅炉燃烧，含水率为80%的生活污泥掺混比不宜超过3.95%。研究结果可为生活污泥和煤泥的综合处理和利用提供基础数据和应用参考。

关键词:生活污泥 / 煤泥 / 燃烧特性 / 灰熔融特性 / 黏度 

Abstract:In order to realize the co-utilization of domestic sludge and coal slime， the combustion performance， slag and ash deposition characteristics， and viscosity characteristics of their mixture were studied. The results showed that with the increase of the mixing ratio of domestic sludge， the ignition point temperature of the mixed samples （domestic sludge and coal sludge） gradually decreased， the combustion characteristic index gradually increased， and the ignition stability index exceeded that of pure coal sludge when 3.95% domestic sludge added and continued to rise. When the addition ratio of domestic sludge was less than 8.75%， it had little effect on the ash melting temperature of coal slime. When the addition ratio of wet domestic sludge increased from 0 to 8.75%， the viscosity of the mixed samples （wet domestic sludge and wet coal sludge） gradually increased. When the moisture content of the mixed samples （wet domestic sludge and wet coal sludge） was 45%， a high mixing ratio of wet domestic sludge increased the viscosity change amplitude of the mixed samples， thereby increased the pressure on the conveying system. In order to realize the mixed transportation of wet domestic sludge and wet coal sludge into the boiler for combustion， the mixing ratio of wet domestic sludge（with a moisture content of 80%） should not exceed 3.95%. The results obtained in this study can provide basic data and application reference for the comprehensive treatment and utilization of domestic sludge and coal slime.

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