Combustion characteristics and NO formation for biomass blends in a 35-ton-per-hour travelling grate utility boiler

Li, Zhengqi; Zhao, Wei; Li, Ruiyang; Wang, Zhenwang; Li, Yuan; Zhao, Guangbo

doi:10.1016/j.biortech.2008.11.005

Cited by 34 publications

(13 citation statements)

References 16 publications

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“…Grate-firing boiler is one of major and popular boiler types to burn biomass for heat and power production in China and European countries [21][22][23]. Most of these plants are used to combust residues of wood industry in Europe.…”

Section: Grate-firing Biomass Combustionmentioning

confidence: 99%

Evolution of fuel-N in gas phase during biomass pyrolysis

Ren

Zhao

2015

Renewable and Sustainable Energy Reviews

113

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Section: Grate-firing Biomass Combustionmentioning

confidence: 99%

Evolution of fuel-N in gas phase during biomass pyrolysis

Ren

Zhao

2015

Renewable and Sustainable Energy Reviews

113

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“…Biomass is the most common form of renewable energy and is seen as a means of helping to reduce global warming by displacing the use of fossil fuels [1,2]. The conversion of biomass into energy can be achieved in two broad pathways: biological (fermentation and anaerobic digestion) or thermochemical (gasification, liquefaction and pyrolysis) processes.…”

Section: Introductionmentioning

confidence: 99%

Comparison of catalytic pyrolysis of biomass with MCM-41 and CaO catalysts by using TGA–FTIR analysis

Wang

Xiao

Zhang

et al. 2010

Journal of Analytical and Applied Pyrolysis

208

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“…The higher emissions of CO in rectangular burner can be explain by poor combustion which might result from low combustion temperature, insufficient oxygen, poor mixing of fuel with combustion air and a too short residence time of the combustion gases in the combustion zone [14]. In the small burner and combustion space, the temperature of the gas exceeds 1300 °C leading to the thermal oxidation of atmospheric nitrogen to form NO x [15,16]. Therefore, NO x emissions should be directly related to the nitrogen bound in fuel, but due to relatively high ash contents of agro-pellets (not wood), the catalytic effects of ash surface on NO x formation must be taken into account.…”

Section: Resultsmentioning

confidence: 99%

Influence of burner form and pellet type on domestic pellet boiler performance

Rastvorov

Осинцев

Toropov

2017

IOP Conf. Ser.: Earth Environ. Sci.

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Abstract. The study presents combustion and emission results obtained using two serial pellet boilers of the same heating capacity 40 kW. These boilers have been designed by producers for domestic conditions of exploitation. The principal difference between boilers was the type of the burner. The study concerns the efficiency and ecological performance difference between burners of circular and rectangular forms. The features of the combustion process in both types of burners were studied when boiler operated with different sorts of pellets. The results suggest that the burner of circular form excels the rectangular form burner. However, there is some difference of NO x emission between circular and rectangular burners. IntroductionAt present day many economical, technical, ecological, as well as political reasons motivate firms and homeowners to use their own autonomous, independent of central heating pipeline and gas pipeline heat energy sources. The causes of such choice usually are striving for independence of the heat supplying organization pricing policy, avoidance of bureaucratic apparatus cooperation with (in questions of tariff agreement, the correspondence heating pipeline and gas pipeline connection standards, payment for extra project documentation necessary for central pipeline connection), unwillingness to bear expenses for the heat energy losses in a long and, sometimes, not of perfect quality heating pipeline from a relatively distant central heating source. A diesel fuel boiler, a wood boiler, a coal boiler, a heat pump may be used as independent heat energy source, when it is technically possible. A boiler with biomass and a boiler with granules can also be used. The use of boilers with fuel manual load with relatively big heat power is complicated by the need of heavy manual work. Diesel fuel heating is appreciably more expensive that all others named above and causes serious air pollution. The heat pump for relatively big heat power requires sufficiently big electrical power; a pellet or ground biomass boiler is the most suitable option for such decision.In the last 15-20 years pellet boilers have gained serious popularity in Russia and the EU countries and the number of sold pellet boilers keeps growing. The high prevalence of such heat energy sources is reached thanks to several certain factors: easiness of automatization of the fuel feeding process owing to the standardized size of pellets; easy ash removal that can be automatic or manual, because the pellets ash content seldom exceeds 4 %. The exception is pellets made of straw with the ash content from 7 to 10 percent; compactness of all equipment as compared with unstandardized solid fuel boilers; accessibility of pellets in the market, reasonable price for domestic use. In all pellet boilers the fuel-bed firing technology is used. However, prevailing burner and feeding systems in the EU countries and Russia are different.

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Combustion characteristics and NO formation for biomass blends in a 35-ton-per-hour travelling grate utility boiler

Cited by 34 publications

References 16 publications

Evolution of fuel-N in gas phase during biomass pyrolysis

Evolution of fuel-N in gas phase during biomass pyrolysis

Comparison of catalytic pyrolysis of biomass with MCM-41 and CaO catalysts by using TGA–FTIR analysis

Influence of burner form and pellet type on domestic pellet boiler performance

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