Sensitivity analysis of a methanol and power polygeneration system fueled with coke oven gas and coal gas
Tóm tắt
The sensitivity analysis of a polygeneration energy system fueled with duo fuel of coke oven gas and coal gas is performed in the study, and the focus is put on the relations among syngas composition, conversation rate and performance. The impacts of the system configuration together with the fuel composition on the performance are investigated and discussed from the point of cascading utilization of fuel chemical energy. First, the main parameters affecting the performance are derived along with the analysis of the system configuration and the syngas composition. After the performance is being simulated by means of the Aspen Plus process simulator of version 11.1, the variation of the performance due to the composition of syngas and the conversion rate of chemical subsystem is obtained and discussed. It is obtained from the result that the proper conversion rate of the chemical subsystem according to the specific syngas composition results in better performance. And the syngas composition affects the optimal conversion rate of the chemical subsystem, the optimal point of which is around the stoichiometric composition for methanol production (CO/H2 = 0.5). In all, the polygeneration system fueled with coke oven gas and coal gas, which can realize the reasonable conversion of syngas to power and chemical product according to the syngas composition, is a promising method for coal energy conversion and utilization.
Tài liệu tham khảo
DOE/USA. Clean coal technology demonstration program. US Department of Energy, 2000, DOE/EF-0419
Benjamin D, Hsieh C B. Overview of clean technology in the United States. The United States of America and the People’s Republic of China experts report on integrated gasification combined-cycle technology (IGCC), 1996, DOE/EF-0357
Fan Z, Robertson A. Co-production of hydrogen and electricity using pressurized circulation fluidized bed gasification technology. U.S. Department of Energy Final report, 2006, DE-FC26-00NT40972
Gao L, Jin H, Liu Z. Energy analysis of coal-based poly-generation system for power and chemical production. Energy-. International Journal (Toronto, Ont.), 2004, 29: 2359–2371
Gao L, Li H, Chen B, Jin H, Lin R, Hong H. Proposal of a natural gas-based polygeneration system for power and methanol production. Energy-. International Journal (Toronto, Ont.), 2005, 33: 206–212
Zhang G, Gao L, Jin H. Analysis of hybrid configuration of coal based methanol-power polygeneration system. In: 22nd International Conference on Efficiency, Cost, Optimization Simulation and Environmental Impact of Energy Systems. Foz do Iguaçu, Paraná, Brazil, 2009, 1917–1924
Gao L. Investigation of coal-based polygeneration systems for production of power and liquid fuel. Dissertation for the Doctoral Degree. Beijing: Institute of Engineering Thermophysics, Chinese Academy of Sciences, 2004, 95–96 (in Chinese)
Xie K. Focus on Coal Chemical Engineering. Beijing: Chemical Industry Press, 2008, 33–34 (in Chinese)
Wang M, Li Z, Huang H, Xu Z, Ni W. Reach on DME-power cogeneration from coal gas and coke-oven gas. Computers and Applied Chemistry, 2008, 25: 11–15 (in Chinese)
Sun S. Mechanism and integration of coke oven gas & coal gas based polygeneration systems for production of coke, chemicals & power. Dissertation for the Doctoral Degree. Beijing: Institute of Engineering Thermophysics, Chinese Academy of Sciences, 2009, 70–73 (in Chinese)
Sun S, Jin H, Gao L, Han W. A novel multifunctional energy system for methanol and power production based on coke oven gas and coal gas with CO2 capture. In: International Green Energy Conference. Beijing, 2008, (10): 657–667
Sun S, Gao L, Jin H, Lin R. System study on polygeneration system for methanol and power production based on coke oven gas and coal gas. In: Proceeding of ECOS2007. Padova: 2007, 1009–1016
Lin R, Sun S, Jin H, Gao L. Energy saving ratio and its reference performance benchmark of polygeneration systems with two kinds of fuel gas. In: Proceedings of the CSEE. Beijing: 2009, 29: 1–7 (in Chinese)