Abstract:To explore the influence of coal quality characteristics on air pollutant discharge of civil square briquette, 6 groups of briquettes were selected, which was widely used in an urban area of Hohhot, Inner Mongolia, to test their air pollutant discharges. The main factors affecting air pollutant discharge is discussed according to coal quality analysis data. Results show that volatile content is the main factor affecting PM2.5 and NOx emission concentration. The total content of volatile matter and fixed carbon is significantly related to the emission concentration of VOCs. The emission factors of major air pollutants (CO, SO2, NOx, TSP, PM2.5 and VOCs) are (36.0±17.3), (1.89±0.47), (1.18±0.62), (0.47±0.69), (0.19±0.15) and (0.27±0.18) g·kg?1, respectively. Based on an emission scenario, the emission reduction rates of major air pollutants after the promotion of square coal in an urban area of Hohhot are 61.9%, 22.2%, 20.6%, 89.3%, 91.6% and 89.1%, respectively. In the process of promoting briquette, it is necessary to strengthen the management of briquette coal quality and promote supporting briquette stoves to reduce the contribution of human operations to pollutant emissions. Key words:civil square briquette/ air pollutant/ emission characteristics/ environmental benefits.
图1实验炉具示意图 Figure1.Schematic of the experimental furnacee
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1.Beijing Municipal Institute of Labor Protection, Beijing 100054, China 2.China Association of Environmental Protection Industry, Beijing 100037, China Received Date: 2020-08-27 Accepted Date: 2021-07-07 Available Online: 2021-11-16 Keywords:civil square briquette/ air pollutant/ emission characteristics/ environmental benefits Abstract:To explore the influence of coal quality characteristics on air pollutant discharge of civil square briquette, 6 groups of briquettes were selected, which was widely used in an urban area of Hohhot, Inner Mongolia, to test their air pollutant discharges. The main factors affecting air pollutant discharge is discussed according to coal quality analysis data. Results show that volatile content is the main factor affecting PM2.5 and NOx emission concentration. The total content of volatile matter and fixed carbon is significantly related to the emission concentration of VOCs. The emission factors of major air pollutants (CO, SO2, NOx, TSP, PM2.5 and VOCs) are (36.0±17.3), (1.89±0.47), (1.18±0.62), (0.47±0.69), (0.19±0.15) and (0.27±0.18) g·kg?1, respectively. Based on an emission scenario, the emission reduction rates of major air pollutants after the promotion of square coal in an urban area of Hohhot are 61.9%, 22.2%, 20.6%, 89.3%, 91.6% and 89.1%, respectively. In the process of promoting briquette, it is necessary to strengthen the management of briquette coal quality and promote supporting briquette stoves to reduce the contribution of human operations to pollutant emissions.