Abstract
A new poly-generation system combined coal combustion and pyrolysis has been developed for clean and high efficient utilization of coal. Coal is first pyrolyzed in a fluidized bed gasifier and produced gas is then purified and used for MeOH or DME production. Tar is collected during purification and can be processed to extract monocyclic aromatic hydrocarbons, polycyclic aromatic hydrocarbons and to make liquid fuels by hydrorefining. Semi-coke from the gasifier is burned in a CFB boiler for heat or power generation. A 12MW CFB gas, tar, heat and power poly-generation system was erected by Zhejiang University in cooperation with the Huainan Mining Industry (Group) Co., Ltd. in 2007. The experimental study focused on the two fluidized bed operation and characterization of gas, tar and char yields and compositions. The results showed that the system could operate stable, and produce about 0.12Nm3/kg gas with 22MJ/Nm3 heating value and about 10wt.% tar when pyrolysis temperature between 500 and 600°C. The produced gases were mainly H2, CH4, N2, CO, CO2, C2H4, C2H6, C3H6 and C3H8. Gas component concentrations were 24.18, 36.29, 7.96, 5.6, 7.84, 11.70 and 3.28%, respectively. The CFB boiler run steadily, whether the gasifier run or not, and produced 12MW power.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Fang M, Luo Z, et al. A multi-product cogeneration system using combined coal gasification and combustion. Energy. 1998;23(3):203–12.
Simell P, Ståhlberg P, et al. Provisional protocol for the sampling and analysis of tar and particulates in the gas from large-scale biomass gasifiers. Version 1998. Biomass Bioenergy. 2000;18(1):19–38.
Li H, Yang Z, et al. Pyrolysis of coal in a fluidized bed reactor II: effects of temperature and residence time in freeboard on gaseous product composition. J Fuel Chem Technol. 1998;26(4):339–44.
Sada E, Kumazawa H, et al. Pyrolysis of lignins in molten salt media. Ind Eng Chem Res. 1992;31(2):612–16.
Xu W, Tomita A. Effect of temperature on the flash pyrolysis of various coals. Fuel. 1987;66(5):632–6.
Tyler RJ. Flash pyrolysis of coals. 1. Devolatilization of a Victorian brown coal in a small fluidized-bed reactor. Fuel. 1979;58(9):680–6.
Wang J, Lu X, et al. Experimental study of coal topping process in a downer reactor. Ind Eng Chem Res. 2005;44(3):463–70.
Zhu X, Zhu Z, et al. Fundamental study on the pyrolysis of coals I. Effect of atmosphere and temperature on pyrolysis. J East China Univ Sci Technol. 1998;24(1):37–41.
Acknowledgement
This work was supported by the National High technology Research and Development Program of China (863 Program) (No. 2007AA05Z334) and Zhejiang province Natural Science Foundation (R108011).
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2013 Springer-Verlag Berlin Heidelberg & Tsinghua University Press
About this paper
Cite this paper
Fang, M. et al. (2013). Research on Coal Pyrolysis and Combustion Poly-generation System. In: Qi, H., Zhao, B. (eds) Cleaner Combustion and Sustainable World. ISCC 2011. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-30445-3_73
Download citation
DOI: https://doi.org/10.1007/978-3-642-30445-3_73
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-30444-6
Online ISBN: 978-3-642-30445-3
eBook Packages: EnergyEnergy (R0)