Journal ArticleDOI
Experimental characterization of anthracite combustion and NOx emission for a 300-MWe down-fired boiler with a novel combustion system: Influence of primary and vent air distributions
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TLDR
In this article, a breakthrough idea was proposed to significantly increase the primary air velocity by reducing the damper opening of vent air, and the effects of the high primary air velocities on coal char burnout and NOx formation were investigated via industrial experiments.About:
This article is published in Applied Energy.The article was published on 2019-03-15. It has received 44 citations till now. The article focuses on the topics: Pulverized coal-fired boiler & Combustion.read more
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NO emissions under pulverized char combustion in O2/CO2/H2O preheated by a circulating fluidized bed
TL;DR: In this paper, the char combustion characteristics and NO emission characteristics of O2/CO2/H2O preheated by a circulating fluidized bed were studied; such analysis can simulate the actual wet flue gas recirculation process in the preheating combustion process.
Journal ArticleDOI
Molecular Characterization of Henan Anthracite Coal
TL;DR: A type of Chinese anthracite coal was analyzed by several analytical techniques such as Fourier transform infrared spectrum (FTIR), X-ray photoelectron spectroscopy (XPS), solid-state 13C nuclear m...
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Achievement in ultra-low-load combustion stability for an anthracite- and down-fired boiler after applying novel swirl burners: From laboratory experiments to industrial applications
TL;DR: In this paper, a novel swirl burner (NSB) with an eccentric secondary air arrangement was proposed, and the validity and the progressiveness of the NSB in achieving ultra-low-load combustion stability for down-fired boilers were confirmed from laboratory experiments to industrial applications.
Journal ArticleDOI
More efficient and environmentally friendly combustion of low-rank coal in a down-fired boiler by a simple but effective optimization of staged-air windbox
TL;DR: In this article, the authors investigated how to mitigate low char burnout and high NOx emissions in a 300 MWe down-fired utility boiler burning a low-volatile coal by optimizing the staged-air windbox structure.
Journal ArticleDOI
Numerical evaluation of pulverized coal swirling flames and NOx emissions in a coal-fired boiler: Effects of co- and counter-swirling flames and coal injection modes
TL;DR: In this article, a numerical evaluation was performed to investigate the effects of swirl arrangement and coal injection mode on the flame structure, coal particle uniformity, burnout performance, and nitrogen oxide (NOx) emissions in a 16-kWth coal-fired boiler.
References
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Combustion technology developments in power generation in response to environmental challenges
TL;DR: In this article, the authors discuss the state of the art in coal-firing power generation and their potential for application in the near future, and the key role of combustion science and technology as a guide in their continuing development highlighted.
Journal ArticleDOI
Coal combustion and its pollution control in China
Changfu You,X.C. Xu +1 more
TL;DR: In this article, the authors presented the coal combustion scenario and its related air pollution in China, and some commonly used technologies for removing the pollutants from coal combustion had been introduced after comparison of its utilization efficiency, engineering investment, and operation expense.
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Pulverized coal combustion characteristics of high-fuel-ratio coals
TL;DR: In this article, coal combustion characteristics of high-fuel-ratio coals were experimentally investigated using an approximately 100 kg-coal/h pulverized coal combustion test furnace. But the results showed that under the non-staged combustion condition, the minimum burner load for stable combustion rises as fuel ratio increases.
Journal ArticleDOI
Multi-step-ahead prediction of NOx emissions for a coal-based boiler
TL;DR: In this paper, a multi-step-ahead prediction of NOx emissions that can provide a basis for on-line control is presented, based on optimal features, a model comparison study including linear (ARX and ARMAX) and nonlinear (NN and SVR) modelling approaches is presented.
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Review of Gas/Particle Flow, Coal Combustion, and NOx Emission Characteristics within Down-Fired Boilers
Min Kuang,Zhengqi Li +1 more
TL;DR: In this paper, a comprehensive review of investigations into the gas/particle flow, combustion and NOx emission characteristics within various types of down-fired boilers is presented, and a series of suggestions for organizing reasonable combustion in downfired furnaces have been provided so as to achieve timely ignition, symmetric and stable combustion, weak slagging, good burnout, and asymmetric combustion.
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Review of Gas/Particle Flow, Coal Combustion, and NOx Emission Characteristics within Down-Fired Boilers
Min Kuang,Zhengqi Li +1 more