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Slurryability and combustion characteristics of coal-coking wastewater-slurry

Author:
Wang, Yi  Liu, Jian-Zhong  Chen, Cong  Cheng, Jun  


Journal:
CANADIAN JOURNAL OF CHEMICAL ENGINEERING


Issue Date:
2019


Abstract(summary):

The slurryability, rheological properties, stability, and combustion characteristics of coal water slurry (CWS), made from coking wastewater (CW), deionized water, and Shenhua coal were experimentally studied. Results showed that the solid concentration of coal-coking wastewater-slurry (CCWS) could be higher than 60.5 %, which is 0.5-1.5 % lower than that of coal water slurry (CWS). However, the pseudoplastic behaviour of CCWS was greatly evident. The dispersion effects of NNO and NDF were excellent. The stability of CCWS is better than CWS. Moreover, CCWS had lower ignition temperature and burnout temperature, higher combustion characteristic parameters, such as combustion characteristic index S and ignition stability index R-w, and better performance in combustion than CWS. The application of CW for the production of coal water slurry demonstrated the resource utilization of wastewater and improved the combustion characteristic.


Page:
1803---1808


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