Research on co-combustion utilization of domestic sludge and coal slime and mixed viscosity characteristics

HUI Baoan; CHAI Dongqing; XU Xuezhi; WANG Lianxi; WANG Yimin; LI Qian; DENG Shuanghui; XIA Zhong; WANG Xuebin; TAN Houzhang

doi:10.13205/j.hjgc.202507008

Volume 43 Issue 7

Jul. 2025

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2025 > 43(7): 73-81

HUI Baoan, CHAI Dongqing, XU Xuezhi, WANG Lianxi, WANG Yimin, LI Qian, DENG Shuanghui, XIA Zhong, WANG Xuebin, TAN Houzhang. Research on co-combustion utilization of domestic sludge and coal slime and mixed viscosity characteristics[J]. ENVIRONMENTAL ENGINEERING , 2025, 43(7): 73-81. doi: 10.13205/j.hjgc.202507008

Citation:

HUI Baoan, CHAI Dongqing, XU Xuezhi, WANG Lianxi, WANG Yimin, LI Qian, DENG Shuanghui, XIA Zhong, WANG Xuebin, TAN Houzhang. Research on co-combustion utilization of domestic sludge and coal slime and mixed viscosity characteristics[J]. ENVIRONMENTAL ENGINEERING , 2025, 43(7): 73-81. doi: 10.13205/j.hjgc.202507008

Citation:

HUI Baoan, CHAI Dongqing, XU Xuezhi, WANG Lianxi, WANG Yimin, LI Qian, DENG Shuanghui, XIA Zhong, WANG Xuebin, TAN Houzhang. Research on co-combustion utilization of domestic sludge and coal slime and mixed viscosity characteristics[J]. ENVIRONMENTAL ENGINEERING , 2025, 43(7): 73-81. doi: 10.13205/j.hjgc.202507008

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Research on co-combustion utilization of domestic sludge and coal slime and mixed viscosity characteristics

doi: 10.13205/j.hjgc.202507008

1. Shandong Yankuang Jisan Power Co., Ltd., Jining 272069, China;
2. Faculty of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China

Received Date: 2024-04-22
Accepted Date: 2024-06-15
Rev Recd Date: 2024-05-31

Available Online: 2025-09-11

Abstract

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.
- domestic sludge,
- coal slime,
- combustion characteristics,
- ash melting characteristics,
- viscosity

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References(25)

References

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