Optimization of the Air Distribution in a Biomass Grate-Fired Furnace-Reference-Cited by-同舟云学术

Optimization of the Air Distribution in a Biomass Grate-Fired Furnace

Published:2023-11-17 Issue:22 Volume:16 Page:7634
ISSN:1996-1073
Container-title:Energies
language:en
Short-container-title:Energies

Author:

Wang Qingjia¹²,Zhang Man²,Xiao Fan²³,Wang Hairui¹,Jin Yan³,Hu Nan¹^ORCID,Yang Hairui²

Affiliation:

1. School of Energy and Power Engineering, Changchun Institute of Technology, Changchun 130012, China

2. State Key Laboratory of Power Systems, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China

3. College of Electrical and Power Engineering, Taiyuan University of Technology, Taiyuan 030024, China

Abstract

This study utilized a combination of FLIC(1D3.2C) and FLUENT(2021R2) software to optimize the primary air distribution along the grate and the performance of a straw briquette combustion furnace of a 7 MW unit in China used to produce hot air for drying grain. Three air distribution modes, namely front-enhanced, uniform, and rear-enhanced modes, were analyzed to determine their effect on the flue gas components above the grate, the temperature field in the furnace, and the nitrogen oxide concentration at the furnace outlet. The results of the calculations showed that the NOx emissions for the front-enhanced, uniform, and rear-enhanced modes were 133.5 mg/Nm3, 104.4 mg/Nm3, and 76.6 mg/Nm3, respectively. It was found that the rear-enhanced mode can expand the biomass drying, devolatilization, and combustion zone, thus improving the furnace combustion performance and decreasing NOx emissions. These findings can provide useful guidance for optimizing biomass chain-grate-firing furnaces.

Funder

Key Research and Development project of Changchun Science and Technology Bureau

Taiyuan City “unveiled the list of commanding” project: the flexibility of low-carbon power generation technology development for a high proportion of new energy consumption

Publisher

MDPI AG

Subject

Energy (miscellaneous),Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment,Electrical and Electronic Engineering,Control and Optimization,Engineering (miscellaneous),Building and Construction

Link

https://www.mdpi.com/1996-1073/16/22/7634/pdf

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