Review of works on the preparation of coal water fuel and its combustion in boilers
DOI:
https://doi.org/10.18321/cpc464Keywords:
Keywords: coal-water fuel (WCF), WCF preparation, WCF combustion, cavitation treatment, coal waste.Abstract
In the process of coal enrichment, huge volumes of waste are generated, which, as a rule, are thrown into the surrounding space, polluting it. The waste may contain up to 50% carbon. Small industrial power generation, municipal boiler houses mainly use layered combustion of coal. At the same time, the carbon burnout coefficient is 50–60%, the efficiency of boilers often does not exceed 60%, and their environmental performance does not meet modern requirements. An effective way to solve the problem of coal waste disposal can be the conversion of boilers to the combustion of coal in the form of coal-water suspension (CWS). The article presents the results of the authors on the technology of preparation of water-coal fuel (WCF) and its combustion in vortex furnaces of boilers. The data on new equipment necessary for the implementation of the technology is presented. It is shown that ordinary coal, anthracite, coal sludge, as well as coal preparation waste can serve as the basis for the production of CWF. Examples of pilot-industrial application of watercoal technology are given. At the same time, the fuel burnup coefficient reaches values of the order of 95%, and the efficiency of the boilers exceeds 85%.
References
(1). Marinicheva O (2012) Energy and Industry of Russia [Energetika i promyshlennost’ Rossii] 11(199):1–4. (in Russian)
(2). British Petroleum. BP Statistical Review of World Energy. London: BP, – 2018. – P.56.
(3). Munawer ME (2018) Journal of Sustainable Mining. 17(2):87–96. https://doi.org/10.1016/j.jsm.2017.12.007
(4). Franco A, Diaz AR (2009) Energy. 34(3):348–354. https://doi.org/10.1016/j.energy.2008.09.012
(5). Baranova MP, Kulagin VA (2017) Physical and chemical bases for obtaining fuel watercoal suspensions [Fiziko-himicheskie osnovy polucheniya toplivnyh vodougol’nyh suspenzij] Siberian Federal University, Krasnoyarsk, Russia. ISBN 978-5-7638-2116-1 (in Russian)
(6). Glushkov DO, Strizhak PA, Chernetskii MY (2016) Therm. Eng. 63(10):707–717. https://doi.org/10.1134/S0040601516100037
(7). Nyashina GS, Kuznetsov GV, Strizhak PA (2018) J. Clean. Prod. 172:1730–1738. https://doi.org/10.1016/j.jclepro.2017.12.023
(8). Nyashina GS (2018) Investigation of ways to reduce the impact of thermal power plants on the environment when burning suspension fuels from coal enrichment waste and biomass. [Issledovanie sposobov snizheniya vliyaniya teplovyh elektricheskih stancij na okruzhayushchuyu sredu pri szhiganii suspenzionnyh topliv iz othodov ugleobogashcheniya i biomassy] Dissertation for the degree of candidate of technical sciences. Tomsk, Russia. P.201. (in Russian)
(9). Fan W, Li Y, Guo Q, Chen C, Wang Y (2017) Energy. 125:417–426. https://doi.org/10.1016/j.energy.2017.02.130
(10). Zhang H, Liu J, Shen J (2013) Front. Energy.7:119–126. https://doi.org/10.1007/s11708-012-0226-6
(11). Ma J, Shen J, Liu J, Ma Y, Jiang X (2020) Fuel. 220:25–31. https://doi.org/10.1016/j.fuel.2018.02.011
(12). Chang S, Zhuo J, Meng S, Qin S, Yao Q (2016) Engineering. 2(4):447-459. https://doi.org/10.1016/J.ENG.2016.04.015
(13). Guan G (2017) Chinese Journal of Chemical Engineering. 25(6):689–697.https://doi.org/10.1016/j.cjche.2016.12.008
(14). Wang G, Xu Y, Ren H (2019) International Journal of Mining Science and Technology. 29(2):161–169. https://doi.org/10.1016/j.ijmst.2018.06.005
(15). Cheng J, Zhou J, Li Y, Liu J, Cen K (2008) Fuel. 87(12):2620–2627. https://doi.org/10.1016/j.fuel.2008.01.028
(16). Zhang Y, Xu Z, Tu Y, Wang J, Li J (2020) Powder Technology 366:552–559. https://doi.org/10.1016/j.powtec.2020.03.005
(17). Chen X, Wang C, Wang Z, Zhao H, Liu H (2019) Fuel 242:788–793. https://doi.org/10.1016/j.fuel.2019.01.007
(18). Liu F, Lyu T, Pan T, Wang F (2017) Energy Policy 105:398–406. https://doi.org/10.1016/j.enpol.2017.03.017
(19). Mal’tsev LI, Kravchenko IV, Kartashova LV, Kravchenko AI (2017) Cavitation generator [Generator kavitacii] Patent of the Russian Federation 2635142.
(20). Mal’tsev LI, Belogurova TP, Kravchenko IV (2017) Thermal Engineering 64(8):585-590. https://doi.org/10.1134/S0040363617080069
(21). Alekseenko SV, Mal’tsev LI, Kravchenko IV, Kravchenko AI, Kartashova LV (2014) Device for burning water-coal fuel (options)[Ustrojstvo dlya szhiganiya vodougol’nogo topliva (varianty)] Patent of the Russian Federation 2518754.
(22). Alekseenko SV, Maltsev LI, Bogomolov AR, Chernetsky MYu, Kravchenko IV, Kravchenko AI, Shevyrev SA, Lyrshchikov SYu (2017) Bulletin of the Tomsk Polytechnic University. Engineering of georesources [Izvestiya Tomskogo politekhnicheskogo universiteta. Inzhiniring georesursov] 12:16–28. (in Russian)
(23). Mal’tsev LI, Alekseenko SV, Kravchenko IV (2014) Pneumatic nozzle [Pnevmaticheskaya forsunka] Patent of the Russian Federation №2523816.
(24). Alekseenko SV, Anufriev IS, Dekterev AA, Kuznetsov VA, Maltsev LI, Minakov AV, Chernetskiy MYu, Shadrin EYu, Sharypov OV (2019) International Journal of Heat and Fluid Flow. 77:288–298 https://doi.org/10.1016/j.ijheatfluidflow.2019.04.013
(25). Kuznetsov VA, Maltsev LI, Dekterev AA, Chernetskiy MY (2018) Numerical investigation of the influence of operating conditions on the description of the nitrogen oxides formation in the combustion chamber of low-power boiler during the combustion of water-coal fuel. J. Phys.: Conf. Ser. P.012042. https://doi.org/10.1088/1742-6596/1105/1/012042
(26). Kuznetsov VA, Maltsev LI, Dekterev AA (2020) Numerical investigation of coal-water fuel combustion in two-chamber furnace of a low-power boiler. XXXVI Siberian Thermophysical Seminar (STS 36) Journal of Physics: Conference Series. https://doi.org/10.1088/1742-6596/1677/1/012110
