Influence of Fuel Type and Water Content Variation on Pollutant Emission Characteristics of a Biomass Circulating Fluidized Bed Boiler

Jianjie He, Shanjian Liu, Di Yao, Ranran Kong and Yaya Liu
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Jianjie He: School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China
Shanjian Liu: School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China
Di Yao: School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China
Ranran Kong: School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China
Yaya Liu: School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China

Energies, 2021, vol. 14, issue 18, 1-17

Abstract: In general, the biomass raw materials burned by biomass power plants generally have the characteristics of variable fuel types, high moisture content, and high volatile content. In this paper, a 130 t/h biomass circulating fluidized bed (BCFB) model was established on the MWorks platform with Modelica language. The influence of biomass type changes on operation parameters, the corresponding steady-state characteristics, and the dynamic characteristics of the BCFB were carried out. The temperature corresponding to the combustion of pine was overall higher than that of the other fuels, and the flue gas from the combustion of pine had the highest concentration of SO 2 , up to 520.49 mg/Nm 3 . The flue gas from the combustion of pure cotton sticks had the highest concentration of NO, up to 254.34 mg/Nm 3 . The changes of fuel type and moisture content all have a great influence on the operation of BCFBs. The emission of pollutants was not only related to the element content of fuel, but also closely related to the furnace temperature. The fuel moisture content also indirectly affects the pollutant emission concentration and the steam-water system.

Keywords: biomass; circulating fluidized bed; simulation; pollutant emission; fuel type; water content (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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