Numerical study of operating modes of single-stage air-steam blown entrained flow gasifier
DOI:
https://doi.org/10.14529/power170302Keywords:
gasification, coal, air blasting, numerical simulationAbstract
The gasification of solid fuels makes it possible to increase the technical and environment efficiency of
the solid fuels using in the power engineering. Large-capacity gasifiers mostly operate on the principle of entrained flow: pulverized-coal fuel is entrained by blowing and undergoes the stages of conversion into combustible gases in the reactor. The paper studies the one-step process of air-steam coal gasification with preliminary heating of the gasification agent. To this end, a mathematical model is used, including one-dimensional transport equations and chemical transformations of fuel and gas mixture. The calculations provide the main characteristics of the gasification process and their dependence on the control parameters: the air heating temperature, the excess of the oxidant and the steam consumption.
References
Spliethoff H. Power Generation from Solid Fuels. Springer, 2010. 704 p. DOI: 10.1007/978-3-642-02856-4
Wang T., Stiegel G. (eds.) Integrated Gasification Combined Cycle (IGCC) Technologies. Woodhead Publ., 2017. 929 p. DOI: 10.1016/B978-0-08-100167-7.00001-9
Grabner M. Industrial Coal Gasification Technologies Covering Baseline and High-ash Coal. Wiley-VCH, 2015. 376 p. DOI: 10.1002/9783527336913
Ryzhkov A.F., Bogatova T.F., Lingyan Zeng, Osipov P.V. [Development of Entrained-Flow Gasification Technologies in the Asia-Pacific Region (review)]. Thermal Engineering, 2016, vol. 63, no. 11, pp. 791–801. DOI: 10.1134/S0040601516110069
Olkhovskii G.G. [New Projects for CCGTs with Coal Gasification (Review)]. Thermal Engineering, 2016, vol. 63, no. 10, pp. 679–689. DOI: 10.1134/S0040601516100074
Mikula V.A., Ryzhkov A.F., Val'tsev N.V. [Analyzing the Possibility of Constructing Air Heating System for Integrated Solid Fuel Gasification Combined-Cycle Power Plant]. Thermal Engineering, 2015, vol. 62, no. 11, pp. 773–778. DOI: 10.1134/S0040601515110038
Kler A.M., Tyurina E.A., Mednikov A.S. [Coal Combined-Cycle Plant with Working Medium Heating
in Gas-turbine Cycle in Periodic Regenerative Heat Exchangers]. Bulletin of the Tomsk Polytechnic University, vol. 323, no. 4, pp. 75–80. (in Russ.)
Aslanjan G.S., Ginevskaja I.Ju., Shpil’rajn E.E. [Influence of Oxygen-Steam Blowing Parameters on Carbon Gasification]. Himija tverdogo topliva [Solid Fuel Chemistry], 1984, no. 1, pp. 90–98.
Tsuji H., Gupta A.K., Hasewaga T., Katsuki M., Kishimoto K., Morita M. High Temperature Air Combustion. From Energy Conservation to Pollution Reduction. CRC Press, 2003. 405 p. DOI: 10.1201/9781420041033
Som S.K., Datta A. Thermodynamic Irreversibilities and Exergy Balance in Combustion Processes. Progress in Energy and Combustion Science, 2008, vol. 34, pp. 351–376. DOI: 10.1016/j.pecs.2007.09.001
Li P.F., Mi J.C., Dally B.B., Wang F.F., Wang L., Liu Z.H., Chen S., Zheng C.G. Progress and Recent Trend in MILD Combustion. Science China. Technological Sciences, 2011, vol. 54, no. 2, pp. 255–269. DOI: 10.1007/s11431-010-4257-0
Ryzhkov A.F., Gordeev S.I., Bogatova T.F. [Selecting the Process Arrangement for Preparing the Gas Turbine Working Fluid for an Integrated Gasification Combined-cycle Power Plant]. Thermal Engineering, 2015, vol. 62, no. 11, pp. 796–801. DOI: 10.1134/S0040601515110075
Monaghan R.F.D., Ghoniem A. A Dynamic Reduced Order Model for Simulating Entrained Flow Gasifiers. Part I: Model Development and Description. Fuel, 2012, vol. 91, pp. 61–80. DOI: 10.1016/j.fuel.2011.07.015
Gazzani M., Manzolini G., Macchi E., Ghoniem A.F. Reduced Order Modeling of the Shell-Prenflo Entrained Flow Gasifier. Fuel, 2013, vol. 104, pp. 822–837. DOI: 10.1016/j.fuel.2012.06.117
Sahraei M.H, Duchesne M.A., Yandon D., Hughes R.W., Ricardez-Sandoval L.A. Reduced Order Modeling of a short-residence Time Gasifier. Fuel, 2015,vol. 161, pp. 222–232. DOI: 10.1016/j.fuel.2015.07.096
Hla S.S., Roberts D.G., Harris D.J. A numerical model for understanding the behaviour of coals in an entrained-flow gasifier. Fuel Processing Technology, 2015, vol. 134, pp. 424–440. DOI: 10.1016/j.fuproc.2014.12.053
Donskoi I.G. Mathematical Modeling of the Reaction Zone of a Shell-Prenflo Gasifier with the Use of
the Models of Sequential Equilibrium. Solid Fuel Chemistry, 2016, vol. 50, no. 3, pp. 191–196. DOI: 10.3103/S0361521916030034
Donskoy I.G., Shamansky V.A, Kozlov A.N., Svishchev D.A. Coal Gasification Process Simulations
Using Combined Kinetic-thermodynamic Models in One-dimensional Approximation. Combustion Theory and Modelling, 2017, vol. 21, no. 3, pp. 529–559. DOI: 10.1080/13647830.2016.1259505
Koukkari P., Pajarre R. Introducing Mechanistic Kinetics to the Lagrangian Gibbs Energy Calculation. Computers and Chemical Engineering, 2006, vol. 30, pp. 1189–1196. DOI: 10.1016/j.compchemeng.2006.03.001
Kaganovich B.M., Keiko A.V., Shamansky V.A. Equilibrium thermodynamic modeling of dissipative macroscopic systems. Advances in chemical engineering: Thermodynamics and kinetics of complex systems, ed. by D.H. West and G. Yablonsky, 2010, vol. 39, pp. 1–74. DOI: 10.1016/S0065-2377(10)39001-6
Prins M.J., Ptasinski K.J. Energy and Exergy Analyses of the Oxidation and Gasification of Carbon.
Energy, 2005, vol. 30, no. 7, pp. 982–1002. DOI: 10.1016/j.energy.2004.08.010
Biagini E. Study of the Equilibrium of Air-blown Gasification of Biomass to Coal Evolution Fuels. Energy Conversion and Management, 2016, vol. 128, pp. 120–133. DOI: 10.1016/j.enconman.2016.09.068
Zhu Q. High Temperature Syngas Coolers (CCC/257). IEA Clean Coal Centre, 2015. 60 p.
