Relationship Between the Nanopore Structure and Basic Characteristics of Coal with the Protogenetic CO Content

2021 ◽  
Vol 21 (1) ◽  
pp. 505-514
Author(s):  
Bo Tan ◽  
Gang Cheng ◽  
Xianbing Yang ◽  
Xiaoman Zhu ◽  
Mingming Hu ◽  
...  
Keyword(s):  
Coal Combustion ◽  
Coal Sample ◽  
Synthesis Process ◽  
Elemental Content ◽  
Coal Seams ◽  
Gas Emission ◽  
Internal Factors ◽  
Exponential Power Distribution ◽  
Spontaneous Coal Combustion ◽  
Co Gas

In the prediction and forecasting of spontaneous coal combustion, protogenetic CO produced in the process of coal oxidation is used as the indicator gas, but the sources of CO gas in coal seams are extensive. Protogenetic CO in coal seams often interferes with predictions of spontaneous coal combustion. To predict the content of protogenetic CO gas in coal seams and its emission, this study established an experimental system of protogenetic CO content and emission in coal seams. Six groups of coal samples were tested, and the CO emission content was determined per hour within 24 hours of obtaining each coal sample. Four kinds of protogenetic CO gas emission indexes were defined. Then, internal factors of coal, including industrial components, elemental content and pore structure, were analysed. Finally, the relationship between the protogenetic CO gas emission index of coal seams and the internal factors of coal was obtained. The results indicate that the relation between the CO dispersion concentration and the time of the coal sample follows an exponential power distribution. The internal factors of coal influence the content and emission of protogenetic CO in coal seams, but there is no strict correlation with each parameter as it is a multi-parameter correlation synthesis process.

Adiabatic spontaneous coal combustion period derived from the thermal effect of spontaneous combustion

Energy ◽  
2021 ◽  
pp. 122101
Author(s):  
Li Yan ◽  
Hu Wen ◽  
Wenyong Liu ◽  
Yongfei Jin ◽  
Yin Liu ◽  
...  
Keyword(s):  
Thermal Effect ◽  
Coal Combustion ◽  
Spontaneous Combustion ◽  
Spontaneous Coal Combustion

scholarly journals Optimization Process of Carbon Mono Oxide (CO) Gas Emission Adsorption using Activated Carbon from Rice Husk

2018 ◽  
Vol 1114 ◽  
pp. 012014
Author(s):  
Suhendrayatna ◽  
M Aprianti ◽  
P N Sheilla ◽  
I Machdar ◽  
Elvitriana
Keyword(s):  
Activated Carbon ◽  
Rice Husk ◽  
Optimization Process ◽  
Gas Emission ◽  
Co Gas

scholarly journals The Variability of Mercury Content in Bituminous Coal Seams in the Coal Basins in Poland

Resources ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 127
Author(s):  
Justyna Auguścik-Górajek ◽  
Marek Nieć
Keyword(s):  
Coal Combustion ◽  
Bituminous Coal ◽  
Mercury Content ◽  
Limited Extent ◽  
Iron Sulfides ◽  
Coal Seams ◽  
Preliminary Assessment ◽  
Coal Basin ◽  
Coal Quality ◽  
Mercury Emission

The mercury content in bituminous coal in Poland varies depending on the coal basin. The highest of its concentrations are recorded in the Lower Silesian Coal Basin where this may be the result of the volcanic activity reported there. A much lower average of Hg content was recorded in Lublin and the Upper Silesian Coal Basins (LCB and USCB), although it was higher in the former. A higher mercury concentration in the LCB is probably related to the zone of supposed deep disturbances, named the Karpinsky lineament. Most published works present the data on the mercury content in the bulk of mined coal. The preliminary assessment of mercury content in coal seams indicates that it varies considerably between and within them. It is bound to the presence of arsenic-bearing iron sulfides. Concentration of mercury in small zones of limited extent suggests it was introduced by migrating fluids. The knowledge of mercury content distribution in coal seams would improve the prediction of its content in the mined coal and allow better management of produced coal quality with the aim of reducing mercury emission to the atmosphere as a result of coal combustion.

A model for assessing the compound risk represented by spontaneous coal combustion and methane emission in a gob

2020 ◽  
Vol 273 ◽  
pp. 122925 ◽  
Author(s):  
Yu Xu ◽  
Zijun Li ◽  
Huasen Liu ◽  
Xiaowei Zhai ◽  
Rongrong Li ◽  
...  
Keyword(s):  
Methane Emission ◽  
Coal Combustion ◽  
Spontaneous Coal Combustion

scholarly journals Numerical simulation of the effect of material catalytic converter on gas emission

2018 ◽  
Vol 204 ◽  
pp. 04018
Author(s):  
Suheni ◽  
Rudy Sunoko ◽  
Slamet Wahyudi ◽  
Amin S Leksono
Keyword(s):  
Numerical Simulation ◽  
Mass Fraction ◽  
Thermal Condition ◽  
Catalytic Converter ◽  
Human Life ◽  
High Mass ◽  
Gas Emission ◽  
Rest Time ◽  
Fluent Software ◽  
Co Gas

The disposal of gas emission from vehicle is the biggest contributor to the environmental pollution which generates most carbon monoxide, hydrocarbon, and lead (Pb=Plumbum). Those substance particulates are pollutants and harmful for both the environment and human life. One of the innovations that can reduce the pollutive particulates is to reduce CO gas by assembling a catalytic converter are displayed. In order to find out the effect of catalytic converter absorption toward (CO) gas particulate, varied with various materials in an environmentally friendly catalytic converter, a simulation using fluent software is carried out. From the simulation, it is seen a significant thermal condition and CO mass fraction absorption from various different materials, by applying mass fraction of CO=0.04;N2=0.8796; and O2=0.12, the decrease of high mass fraction (decrease of CO=0.004 mass fraction) occurs at the channel centre area due to the mass fraction of various materials that moves away from the center with a longer rest time (high conversion) at the surrounding channel.

scholarly journals Research on the Influence of Oxygen-containing Functional Group and Gas Emission by Coal Seams

2012 ◽  
Vol 17 ◽  
pp. 1901-1906 ◽  
Author(s):  
Ou Yangdong ◽  
Guo Liwen ◽  
Ma hongcui
Keyword(s):  
Functional Group ◽  
Coal Seams ◽  
Gas Emission
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