Analysis of combustion of wood pellets as a substitute fuel in a low-power boiler

• Autorzy: Zima W. , Ojczyk G.
• Języki publikacji: EN

Abstrakty

EN

The paper presents selected results of measurements carried out during combustion of wood pellets in a low-power boiler, equipped with a screw feeder and a retort burner. The tested boiler is a multi-fuel boiler with mechanized fuel feed, intended for combustion of small-size coal, sold under the trade name of "ekogroszek". Since initiation of the flame, the boiler operation is fully automatic. The fuel supply system and operation of the forced draught fan are controlled by the boiler controller. Wood pellets can also be used to fire this particular boiler, but it is a substitute fuel, and thus there are no documented test results for its combustion. Manufacturers of multi-fuel boilers on the other hand show great interest in obtaining such results. This is reflected in the delivery of a multi-fuel boiler to the Institute of Thermal Power Engineering of the Cracow University of Technology for the purpose of carrying out appropriate research and tests. The article also presents a test stand, equipped with the boiler supplied for testing, a measurement data acquisition system and a heat discharge system. Analysis of the obtained research results has been performed, and the paper presents also the conclusions from the observation of the boiler during combustion of the substitute fuel in the form of wood pellets.

Słowa kluczowe

EN

wood pellets; combustion; low-power boiler

• Wydawca: Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archivum Combustionis
• Rocznik: 2015
• Tom: Vol. 35 nr 2
• Strony: 117--130
• Opis fizyczny: Bibliogr. 24 poz., rys., tab.

Twórcy

autor

Zima W.

• Cracow University of Technology Institute of Thermal Power Engineering Warszawska 24, 31-155 Cracow

autor

Ojczyk G.

• Cracow University of Technology Institute of Thermal Power Engineering Warszawska 24, 31-155 Cracow

Bibliografia

• [1] Radziszewski M., Using biomass for energy purposes (in Polish), Conference on Green Units – large and small biomass investment projects, Szczecin 2012.
• [2] Malko J., Vision of the future – three points of view (in Polish), Rynek Energii 2(105)/2013.
• [3] Zuwała J., Sustainable use of biomass resources in combustion and co-combustion processes – current domestic policy and the EU regulations (in Polish), Forum of Power Engineering Technologies – Biomass combustion, Bełchatów 2011.
• [4] Zuwała J., The use of biomass for power purposes in the context of sustainable growth (in Polish), Energia i Budynek, No 3, pp. 2-5, 2012.
• [5] PN-EN 303-5: 2012E Heating boilers. Part 5. Manually and automatically stoked heating boilers with nominal heat output of up to 500 kW – terms, requirements, tests and marking.
• [6] Magdziarz A., Wilk M., The ecological aspect of biomass combustion in stoker-fired boilers (in Polish), Rynek Energii 2(99), 2012.
• [7] Technical materials, Spółdzielnia Metalowo-Odlewnicza "Ogniwo".
• [8] Technical materials, HERZ Armatura i Systemy Grzewcze Sp z o.o.
• [9] Buczkowski R., Igliński B., Cichosz M., Ojczyk G., Stańczak M., Piechota G., Biomass in the power sector (in Polish), The Nicolaus Copernicus University Press, Toruń 2012.
• [10] CTI–R04/5, Caratterizzazione del pellet a fini energetici, 2004.
• [11] DIN 51731, Prüfung fester Brennstoffe – Preßlinge aus naturbelassenem Holz – Anforderungen und Prüfung.
• [12] ÖNORM M 7135: 2000, Presslingeaus naturbelassenem Holz oder naturbelassenerRinde, Pelletsund Briketts; Anforderungen und Prüfbestimmungen.
• [13] SS 18 71 20: 1998, Biobränslen och torv-Bränslepellets-Klassificering. (Biofuels and peat-fuel pellets – Classification). Swedish Standards Institution. Stockholm: SIS. Standard.
• [14] ÖNORM M 7136: 2002, PresslingeausnaturbelassenemHolz oder naturbelassenerRinde, Pellets, Qualitäts-sicherungin der Transport-und Lagerlogistik.
• [15] ÖNORM M 7137: 2003, PresslingeausnaturbelassenemHolz –Holzpellets, Anforderungen an die Pelletslagerungbeim Endkunden.
• [16] EN14961-1, Solid biofuels. Fuel specification and classes. Part 1. General requirements.
• [17] EN14961-2, Solid biofuels. Fuel specification and classes. Part 2. Wood pellets for non-industrial use.
• [18] EN14961-3, Solid biofuels. Fuel specification and classes. Part 3. Wood briquettes for non-industrial use.
• [19] EN14961-4, Solid biofuels. Fuel specification and classes. Part 4. Wood chips for non-industrial use.
• [20] EN14961-5, Solid biofuels. Fuel specification and classes. Part 5. Firewood for non-industrial use.
• [21] EN14961-6, Solid biofuels. Fuel specification and classes. Part 6. Non-woody pellets for non-industrial use.
• [22] Brown R.C. (Editor), Thermochemical processing of biomass. Conversion into fuels, chemicals and power, John Wiley and Sons, Ltd. 2011.
• [23] http://zawijan.wordpress.com/burner-s-nowy-palnik/palnik-burner-s/
• [24] "Ecological safety mark" certificate No 915 issued by the Zabrze Institute for Chemical Processing of Coal, Zabrze 2009.