A Review on Application of Acoustic Emission in Coal…
Based on CiteSpace software, this paper reviews and analyzes the application articles of acoustic emission in coal from 2010 to 2020. In this paper, CiteSpace software visualizes 453 articles collected in the Web of Science core database. The cooperation networks between different countries, institutions, and authors are used …
State-of-the-art applications of fly ash from coal and …
Based on the chemical and mineralogical composition, fly ash is commonly classified as Class F or Class C [82].Class F fly ash is characterized by a total Si 2 O 3, Fe 2 O 3, and Al 2 O 3 content greater than 70% and a CaO content less than 5%; the percentage of unburned carbon is generally high at ≥6.0% and up to 12%. Class F ash …
Review and update on the applications of inertinite macerals in coal
Macroscopic charcoal in coal was named as fusain and belongs to one of the macrolithotypes of coal (Fig. 1 N; Stach et al., 1982). Fusain appears as lenses or layers in coal seams. Microscopic charcoal in coal was named as inertinite and belongs to one of the maceral types of coal under microscope (ICCP, 1963, ICCP, 2001).
Processes | Free Full-Text | Preparation and Application of Coal …
P-Nitrophenol (4-NP) is a high toxicity material and has harmful effects on the environment. Thus, the analysis of 4-NP is an important topic at present. In this work, the fabrication of a novel electrochemical sensor based on coal-liquefaction-residue (CLR)-derived porous carbon (PC) materials. CLR-based porous carbon material was prepared …
The application of coal liquefaction residue raffinate slag-based
The coal-to-oil technology of Shenhua Group first opens up a new direction for China to solve the oil shortage. However, a large amount of by-product coal liquefaction residues (CLR) are produced during coal liquefaction. ... This study may provide potential guidance on the application of industrial sorbents and realize the sustainable value of ...
Use of coal
In 2022, coal accounted for about 19.5% of U.S. electricity generation. Coal use by industry. Many industries use coal and coal byproducts. The concrete and paper industries burn large amounts of coal to produce heat. The steel industry uses coal indirectly as coal coke to smelt iron ore into iron to make steel. The high temperatures created by ...
Performance study and application of new coal-fired boiler …
For a coal-fired boiler, there is a substantial amount of heat that can be recovered from the FGD outlet flue gas. This paper proposed a new coal-fired flue gas heat recovery system. The system was applied at the Jinan-Beijiao cogeneration power plant (China). Based on the measured operating data, the plant performance was …
Synthesis, modification strategies and applications of coal …
Coal is a low cost and abundant natural resource. As one of the most important energy sources, coal has been the backbone to humanity and society development, and this will be continued in the coming 20–30 years in some countries such as China [1].It is well known that coal is largely a combination of amorphous, degraded …
Coal
Coal is a black or brownish-black sedimentary rock that can be burned for fuel and used to generate electricity.It is composed mostly of carbon and hydrocarbons, …
Application of cable-supported spatial grid in dry coal shed
This paper presented a new structural style cable-supported spatial grid, which was applied in large span dry coal sheds. The influence of configuration of cable on the force of cable and beam, the ratio of beam force to cable force and the deflection of span was investigated, and a rational configuration of cable was obtained. The results …
Research on the Application of THz-TDS in Coal–Rock …
The recognition of coal–rock interface is very crucial for research in the intelligent production of coal mines. To this end, the study investigated the application of terahertz time-domain spectroscopy in the recognition of coal–rock interface, including the identification of coal–rock and coal–rock mixtures, as well as the accurate …
Prospective application of coal gangue as filler in fracture …
Nevertheless, researches on the application of coal gangue in asphalt is still limited and should be further investigated to promote the recycling of this environmental pollutant. Fatigue crack is a common defect that occurs on asphalt pavements, which will deteriorate the pavements service quality(Lei et al., 2019).
Other uses of coal
Coal is a key energy fuel in the production of aluminium a non-ferrous metal known for its lightweight properties and widely used in cars, trains, and airplanes to reduce the weight …
Applicability of coal slag for application as packed bed …
The application of coal slag in energy storage systems has multiple benefits (Henry and Prasher, 2014, Calvet et al., 2013, Ortega-Fernández et al., 2015). First, recycling waste reduces the costs of TES systems and electricity generation. Second, using recycled materials rather than new raw materials (other sand and rocks) avoids the ...
Coal: exploration, reserves, and utilization
altered coal and caused fast carbonication-aromatization of coal and the formation of new minerals, in some cases with high concentrations of potentially toxic trace elements. The aim of eld exploration is to determine the loca-tion and lithology of coal seams and associated rocks in coal-bearing sequences, as well as the structural features,
Application of Palynology in Petroleum and Coal Exploration
The total amount of carbon in the Earth crust has been estimated to be about 2.65 × 10 20 g (Hunt 1977) of this, almost 82% of the carbon is in the form of carbonates in limestone and dolomites.And just 18% occurs as organic carbon in the form of coal oil and gas (Schidlowski et al. 1974).The process of formation of hydrocarbon resources starts …
Retrofit and application of pulverized coal burners with LNG …
1. Introduction. Thermal power technology in China is constantly evolving. Currently, 300 MW thermal power generating units, especially units using lean coal, are facing tough competition and peak regulation [1], [2], [3].Although several coal-fired generating units with larger capacity and higher efficiency parameters have been built, …
Application of principal-component analysis to the …
Direct application of rich PAHs in coal tars in renewable applications such as photovoltaic devices will not only reduce the carbon emission and waste production, but also upgrade the tar-to-product chain with higher additive value. Decoding the component of coal tars and their optical properties is the basis to apply these complex PAHs in ...
Application of coal-based direct reduction-magnetic …
1. Introduction. Coal-based direct reduction (CBDR) in iron ore smelting, emerging as a prominent method in the mid-20th century, represents a significant evolution in response to energy crises and environmental concerns, entails the removal of oxygen from solid iron ore to produce solid sponge iron that can be used in electric arc furnace …
The application of coal combustion by-products in mine site
Coal combustion by-products (CCBs), including boiler slag, bottom ash, fly ash and flue gas desulphurisation (FGD) material, are solid residues that remain after the burning of coal (Kalyoncu and Olson, 2001, Scheetz and Earle, 1998).The global production of CCBs in 1992 was 459 million tonnes with China as the largest producer …
Application of Data Mining in the Coal Enterprises in ERP
[1] Zhi L and Jian L 2012 Application research of ERP in coal enterprises based on data miningtechnology J. Coal Technology 2 183-185 Google Scholar [2] Wei X, Yanmin X and Jinhu N 2012 The application of data mining technology in the reverselogistics management in coal enterprises J. Coal Technology 10 45-46 Google Scholar [3] Tao S …
Principles and Applications Of Coal Petrology
It is the intent of this course to deal with the very broad aspects of coal petrology. In the process of doing this, the authors intend to point out many of the areas in which the science has been applied to geological and various production problems and also to suggest some areas where future work may be of value.
A review of sustainable utilization and prospect of coal …
As the leading industry of coal chemical industry, Coal gasification plays an important role in efficient and clean utilization of coal. It is a process in which solid fuels such as coal, coke, or semi-coke react with gasifying agents under high temperature and pressure to produce gaseous products and a certain amount of slag (Aprianti et al., …
Analysis on the application and prospect of coal mine
Song et al. [53] reviewed the application status of types of coal mine robots in China and abroad, including tunneling, coal mining, tra portation, safety control and rescue, studied the ...
Coal
Coal is the most carbon-intensive fossil fuel and a huge contributor to climate change, air pollution, and land disruption. It is a chemically complex, rock-like hydrocarbon that contains heavy metals (e.g., mercury and …
Application of novel flotation systems to fine coal cleaning
Coal is the primary energy resource in China (Dmitrienko, Nyashina, and Strizhak 2018; He et al. 2018). China's raw coal output was 3.41 billion tons in 2016. ... Application of novel flotation systems to fine coal cleaning. Gan Cheng College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, Henan …
How Coal Works
How coal is formed. Coal is formed when dead plant matter submerged in swamp environments is subjected to the geological forces of heat and pressure over hundreds of millions of years. Over time, the …
A review on the preparation and applications of coal-based …
Deep processing and functional applications of coal are important strategies to overcome the bottleneck of current coal applications. In recent years, the fluorescent carbon dots (CDs), a new member of the carbon nanomaterials family, have shown great application prospects in biological imaging, chemical sensing and photocatalysis owing …
The present situation, challenges, and prospects of the application …
Industrial application of ammonia–coal co-firing. In a 600-MW unit of a pulverized coal-fired boiler, a 5 % uptick in NH 3 content per calorific fraction within the fuel can lead to a 24.08-ton per hour decrease in CO 2 emissions.
Overview of industrial utilization of coal
Continued application of coal in blast furnace technology is facing two major challenges, namely declining supply of high-quality coking coal and increasing pressure to minimize impact on climate change. The role of coke in a blast furnace appears indispensable as it provides mechanical support, permeability, CO gas for reduction of …