Research of the operation efficiency of vegetable biomass-operated solid fuel boiler
DOI:
https://doi.org/10.15587/2312-8372.2019.183054Keywords:
boiler equipment, combustion surface, pneumatic-mechanical loader, vegetable biomassAbstract
The object of research is the process of ensuring uniform distribution of fuel over the combustion surface of the combustion chamber of a solid fuel boiler operating on biomass. The uniform distribution of fuel over the combustion surface is one of the important levers for eliminating the phenomena of its chemical and mechanical under-conditioning, which increases the efficiency of boiler equipment. One of the problems of studying this issue is the lack of a sufficient theoretical base and practical experience in the process of chemical-thermal conversion of plant biomass to other types of energy.
An approach is proposed based on the hypothesis that it is possible to increase the efficiency of boiler equipment on plant biomass by establishing an intensive and high-quality combustion process, ensuring an even distribution of fuel on the combustion surface. And also to identify patterns and indicate methods for optimizing the structure of boiler equipment designs by adapting it to plant materials. The implementation of this approach is carried out by conducting a multivariate experiment. During the experiment, the dependence of the coefficient of uneven distribution of fuel along the combustion plane on the height of the loader nozzle, the angle of inclination of the loader control plate to the surface of the combustion mirror and mass fuel supply is determined.
As a result of the study, practical results are obtained, mathematical dependences of the coefficient of uneven distribution of fuel over the combustion surface on the indicated variable factors in the form of a second-order polynomial are presented.
The obtained research results will improve the efficiency of the process of heat production from low-grade solid fuels of vegetable origin in boiler plants, facilitate their wider use, and increase the environmental component of the process.
The research results are interesting both for manufacturers of boiler equipment based on vegetable raw materials and for its users who want to burn the biomass available on the farm to meet energy needs.
References
- Qiu, G., Shao, Y., Li, J., Liu, H., Riffat, S. B. (2012). Experimental investigation of a biomass-fired ORC-based micro-CHP for domestic applications. Fuel, 96, 374–382. doi: http://doi.org/10.1016/j.fuel.2012.01.028
- Demirbas, A. (2004). Combustion characteristics of different biomass fuels. Progress in Energy and Combustion Science, 30 (2), 219–230. doi: http://doi.org/10.1016/j.pecs.2003.10.004
- Roni, M. S., Chowdhury, S., Mamun, S., Marufuzzaman, M., Lein, W., Johnson, S. (2017). Biomass co-firing technology with policies, challenges, and opportunities: A global review. Renewable and Sustainable Energy Reviews, 78, 1089–1101. doi: http://doi.org/10.1016/j.rser.2017.05.023
- ECU lab-scale combustor. 2014. Available at: https://www.ecu.edu.au/schools/engineering/research-activity/thermofluids-research-group
- Zhou, H., Jensen, A., Glarborg, P., Jensen, P., Kavaliauskas, A. (2005). Numerical modeling of straw combustion in a fixed bed. Fuel, 84 (4), 389–403. doi: http://doi.org/10.1016/j.fuel.2004.09.020
- Abelha, P., Gulyurtlu, I., Crujeira, T., Cabrita, I. (2008) Co-combustion of several biomass materials with bituminous coal in a circulating fluidized bed combustor. Proceedings of the 9th International Conference on Circulating Fluidized Beds in conjunction with the 4th International VGB Workshop Operating Experience with Fluidized Bed Firing Systems. Hamburg.
- Knöbig, T., Werther, J., Åmand, L.-E., Leckner, B. (1998). Comparison of large- and small-scale circulating fluidized bed combustors with respect to pollutant formation and reduction for different fuels. Fuel, 77 (14), 1635–1642. doi: http://doi.org/10.1016/s0016-2361(98)00092-1
- Saidur, R., Abdelaziz, E. A., Demirbas, A., Hossain, M. S., Mekhilef, S. (2011). A review on biomass as a fuel for boilers. Renewable and Sustainable Energy Reviews, 15 (5), 2262–2289. doi: http://doi.org/10.1016/j.rser.2011.02.015
- Openshaw, K. (2010). Biomass energy: Employment generation and its contribution to poverty alleviation. Biomass and Bioenergy, 34 (3), 365–378. doi: http://doi.org/10.1016/j.biombioe.2009.11.008
- Werther, J. (2009). Potentials of Biomass Co-Combustion in Coal-Fired Boilers. Proceedings of the 20th International Conference on Fluidized Bed Combustion, 27–42. doi: http://doi.org/10.1007/978-3-642-02682-9_3
- Jenkins, B., Baxter, L., Miles, T., Miles, T. (1998). Combustion properties of biomass. Fuel Processing Technology, 54 (1-3), 17–46. doi: http://doi.org/10.1016/s0378-3820(97)00059-3
- Bridgwater, T. (2006). Biomass for energy. Journal of the Science of Food and Agriculture, 86 (12), 1755–1768. doi: http://doi.org/10.1002/jsfa.2605
- Van Loo, S., Koppejan, J. In, Van Loo, S., Koppejan, J. (2008). The handbook of biomass combustion and co-firing. London: Earthscan, 465.
- Van Der Lans, R., Pedersen, L. T., Jensen, A., Glarborg, P., Johansen, D. (2000). Modelling and experiments of straw combustion in a grate furnace. Biomass and Bioenergy, 19 (3), 199–208. doi: http://doi.org/10.1016/s0961-9534(00)00033-7
- Kaer, S. (2001) Numerical investigation of ash deposition in straw-fired boilers: using CFD as the framework for slagging and fouling predictions. Department of Energy Technology Fluid Mechanics and Combustion. Denmark: Videnbasen for Aalborg Universitet VBN, 203.
- Yin, C., Rosendahl, L., Kær, S. K., Clausen, S., Hvid, S. L., Hille, T. (2008). Mathematical Modeling and Experimental Study of Biomass Combustion in a Thermal 108 MW Grate-Fired Boiler. Energy & Fuels, 22 (2), 1380–1390. doi: http://doi.org/10.1021/ef700689r
- Ku, X., Li, T., Løvås, T. (2015). CFD–DEM simulation of biomass gasification with steam in a fluidized bed reactor. Chemical Engineering Science, 122, 270–283. doi: http://doi.org/10.1016/j.ces.2014.08.045
- Melnikov, S. V., Atselkin, V. R., Roshchin, P. M. (1980). Planirovaniye eksperimenta v issledovaniyakh sel'skokhozyaystvennykh protsessov. Leningrad: Kolos, 168.
- Vasylkovskyy, O., Leshchenko, S., Vasylkovska, K., Petrenko, D. (2016). Pidruchnyk doslidnyka. Kirovohrad, 204.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2019 Gennadii Golub, Nataliya Tsyvenkova, Viacheslav Chuba, Savelii Kukharets, Yaroslav Yarosh, Marina Tereshchuk
This work is licensed under a Creative Commons Attribution 4.0 International License.
The consolidation and conditions for the transfer of copyright (identification of authorship) is carried out in the License Agreement. In particular, the authors reserve the right to the authorship of their manuscript and transfer the first publication of this work to the journal under the terms of the Creative Commons CC BY license. At the same time, they have the right to conclude on their own additional agreements concerning the non-exclusive distribution of the work in the form in which it was published by this journal, but provided that the link to the first publication of the article in this journal is preserved.
