Experimental study on cement clinker co-generation in pulverized coal combustion boilers of power plants

The idea to co-generate cement clinker in pulverized coal combustion (PCC) boilers of power plants is introduced and discussed. An experimental study and theoretical analysis showed this idea to be feasible and promising. By adding quick lime as well as other mineralizers to the coal and grinding th...

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Bibliographic Details
Published in:Waste management & research 2006-06, Vol.24 (3), p.207-214
Main Authors: Wang, Wenlong, Luo, Zhongyang, Shi, Zhenglun, Cen, Kefa
Format: Article
Language:English
Subjects:
Boilers
Cement
Cement clinkers
Cements
Clinker
Coal
Cogeneration
Cogeneration power plants
Combustion
Electric power generation
Electric power plants
Electricity generation
Environmental aspects
Environmental protection
Materials Testing
Minerals - analysis
Natural resources
Power Plants
Production processes
Pulverized coal
Silicates - analysis
Silicon dioxide
Solid wastes
Studies
Theoretical analysis
Thermal power
X-Ray Diffraction
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Summary:The idea to co-generate cement clinker in pulverized coal combustion (PCC) boilers of power plants is introduced and discussed. An experimental study and theoretical analysis showed this idea to be feasible and promising. By adding quick lime as well as other mineralizers to the coal and grinding the mixture before combustion, sulfoaluminate cement clinker with a high content of silicate (SCCHS) could be generated. The main mineral phases in SCCHS are 2CaO · SiO2 (dicalcium-silicate), 3CaO · 3Al2O3 ·CaSO4 (calcium-sulfoaluminate) and 2CaO · Al2 O3 ·SiO2(gehlenite). Performance tests showed that the SCCHS met the requirements for utilization in common construction. Based on this idea, zero solid waste generation from PCC would be realized. Furthermore, thermal power production and cement production could be combined, and this would have a significant effect on both environmental protection and natural resource saving.
ISSN:0734-242X
1096-3669
0734-242X
DOI:10.1177/0734242X06063892