The preparation and application of ultraclean coal is one of the important aspects of clean energy technology. However, the preparation of ultraclean coal is mainly chemical methods, which are low in efficiency, high in energy consumption and expensive. It is urgent to find an effective method to prepare ultraclean coal. In this paper, the combined method of grinding and the collector ...
Construction of intelligent coal mine knowledge map. Through the establishment of information entities, the mapping from the physical space to the digital space is realized. This mapping includes not only physical entities (, coal mining machines, hydraulic supports, and tunneling machines), but also time entities (, roof pressure, gas overruns, equipment failures) and functional ...
According to our literature survey, coal is a porous medium and its spontaneous combustion is a multiscale process.
Chemical products are ubiquitous in modern society. The chemical sector is the largest industrial energy consumer and the third largest industrial emitter of carbon dioxide. The current portfolio of mitigation options for the chemical sector emphasizes upstream "supply side" solutions, whereas downstream mitigation options, such as material efficiency, are given comparatively short shrift ...
In this work, to efficiently utilize waste fruit and lowrank coal for the hydrogen (H 2)rich syngas production, steam cogasification of banana peel (BP) and brown coal (BC) was studied in a fixedbed results showed that the gasification rate of BC was highly enhanced after mixing it with BP and the obvious synergistic effect was observed in all investigated three mixing weight ...
In this study, the characteristic temperature of coal spontaneous combustion, the generation law of indicator gases, the combustion process, and the division of the combustion stages of coal samples taken from Hongqingliang (HQL) and Dayan (DY) mines were investigated using thermogravimetric analysis experiment, indicator gas detection experimen...
The main process treats carbon dioxide like any other pollutant, and as flue gases are passed through an amine solution the CO2 is absorbed. It can later be released by heating the solution. ... The displacement effect means that coal seam CO 2 injection could be most effective as part of the commercial production of coal seam methane (also ...
Resource Demands of Coal Production. In Environmental Impacts of Coal Mining Utilization, 1987. A Waterconscious Future. Having estimated the quantity and location of future coal production and processing, and the methods by which this coal will be extracted, transported and processed, Alcamo (1984) computed the industry's water requirements. He assumed a "waterconscious" future in ...
Silica aerogel materials are well recognized for their superinsulation performance and are regarded as one of the hot candidates to revolutionize building insulation. To date, high production cost related to exorbitant precursors as well as cumbrous multistep hydrophobization process has often narrowed the field of applications. In this work, granular silica aerogel materials were synthesized ...
Th e process of converting coal into electricity has multiple steps and is similar to the process used to convert oil and natural gas into electricity: 1. A machine called a pulverizer grinds the coal into a fi ne powder. 2. Th e coal powder mixes with hot air, which helps the coal burn more effi ciently, and the mixture moves to the furnace. 3.
In addition to the importance of pyrolysis in coal processing, analysis of pyrolysis products can supply important clues to the structure of the parent coal, especially since many of its structural elements are preserved in the heavy volatile products (tar). Keywords Furnace Temperature Coal Particle Bituminous Coal
Ellison G, Stanmore BR (1981a) High strength binderless brown coal briquettes part I. Production and properties. Fuel Process Technol 4:277289. Google Scholar Ellison G, Stanmore BR (1981b) High strength binderless brown coal briquettes part II. An investigation into bonding. Fuel Process Technol 4(4):291304
processes used in coal‐to‐SNG. The proven and commercialized method of gasification for the coal‐to‐ SNG process, however, is the steam‐oxygen gasification process. Steam‐oxygen gasification In the steam‐oxygen process of converting coal to SNG, coal is
Fuel Processing Technology (FPT) deals with the scientific and technological aspects of the processing and utilization of clean fuels, fuelrelated chemicals and advanced carbon materials and byproducts. Preference will be given to the publication of papers on renewables, including the integration .. From January 1, 2024, Fuel Processing ...
Fully mechanized mining (FMM) technology has been applied in Chinese coal mines for more than 40 years. At present, the output of a FMM face has reached 10million tons with Chinesemade equipment. In this study, the new developments in FMM technology and equipment in Chinese coal mines during past decades are introduced. The automatic FMM technology for thin seams, complete sets of FMM ...
China's unique energy reserve structure abundant in coal and scarce in crude oil and natural gas has promoted heavy investment on the research and development of clean coal chemical technologies during last two decades, which has turned China into a heartland for demonstrating, developing, and commercializing virtually every aspect of new coal chemical process technologies. Consequently ...
Carbon capture and storage (CCS) represents a key solution to control the global warming reducing carbon dioxide emissions from coalfired power plants. This study reports a comparative performance assessment of different power generation technologies, including ultrasupercritical (USC) pulverized coal combustion plant with postcombustion CO2 capture, integrated gasification combined cycle ...
The average production of gangue accounts for 1015% of raw coal production [4,5], making coal gangue one of the biggest solid wastes in China. At present, utilization ratio of coal gangue can reach about 60% in some countries. ... 2019 A novel process to extract alumina and prepare FeSi alloys from coal fly ash. Fuel Process. Technol. 185 ...
In this study, an experimental investigation was presented on the oxidation behaviors of bituminous coal for different inert gases (N 2 and CO 2) at different concentrations (oxygen concentration indexes 21%, %, %, and %) using a temperatureprogrammed experimental purpose of this research was to examine the oxidation patterns of bituminous coal under different inert ...
Global hydrogen production is approximately 70 MMT, with 76% produced from natural gas via SMR, 22% through coal gasification (primarily in China), and 2% using electrolysis (see Figure 3). Figure 3. and Global Production of Hydrogen SMR is a mature production process that builds upon the existing natural gas pipeline delivery infrastructure.
Based on the five links of the whole process of coal production and utilization, including coal production, raw coal processing, logistics and transportation, conversion and utilization and ...
As shown in Figure 1, domestic coal production and consumption volumes had been high from 2011 to 2020, with figures of 3,902 million tons (Mt) and 4,040 Mt in 2020, respectively. In addition, China also imported a considerable amount of coal to meet its domestic demand. Such a figure reached 303 Mt in 2020.
Coal gasification in supercritical water is a typical carbonbased fuel conversion process in water phase, and it takes the advantages of the unique chemical and physical properties of supercritical water to convert organic matter in coal to H2 and CO2. N, S, P, Hg and other elements are deposited as inorganic salts to avoid pollution emission.
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