WEBOct 1, 2019 · The experimental setup for monitoring the dispersion behavior of the HIP W/O emulsion during mixing is presented in Fig. 1 (A). The main elements of the setup consist of the following: (1) a square transparent plastic column with a cross section of 40 × 40 mm, and (2) a Kodak Ektapro highspeed video camera (Eastman Kodak Co., .
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WEBApr 1, 2023 · The amount of kerosene adsorbed in the concentrates was analyzed by FTIR measurements. The results showed that oilinwater with g Span 80 had the largest concentrate yield and combustible recovery, while waterinoil had had larger ash content, flotation rate constant, and recovered water.
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WEBSep 5, 2020 · Quartz sand and talc powder are the main materials; white cement, calcium carbonate, and paraffin are glue; silicone oil and iron powder are regulators. The effects of different mixing ratios on the compressive strength, permeability coefficient, and specific gravity were studied using a single factor analysis method.
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WEBSep 15, 2014 · Based on the obtained results in comparison to the reference mix ( a mix containing limestone powder) the coal waste and its ash resulted in higher stability and resilient modulus. Furthermore, the combination of coal waste and limestone powders in equal proportion resulted in a desirable mix with high water resistance.
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WEBSep 1, 2021 · The effect of mixing ratio and active alkali and alkaline earth metals (AAEMs) on gaseous products from copyrolysis of coal and corn stalks was investigated in this research.
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WEBApr 1, 2020 · This study presented the fuel qualities of the pellets made from rose oilprocessing solid waste, pine bark, and lignite coal powder. With the increased ratio of lignite coal powder in the blend, the abrasive and impact resistance of the pellets declined.
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WEBNov 21, 2023 · Coal water slurry (CWS) is considered a promising oil substitute. It is a coalbased, fluid clean fuel, characterized by low pollution levels, economical cost, and superior combustion efficiency [ 5, 6 ]. A typical CWS primarily comprises 60–75% coal, 25–40% water, and approximately 1% additives [ 7 ].
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WEBJan 1, 2020 · Section snippets Materials. Coal slime was collected from Binchang, and the semicoke powder from the Laixi coking plant, both in China. According to the Alfred model of grain size distribution, the semicoke was divided into different size grades (<75 μm, 75–125 μm, and 125–250 μm) through the process of crushing, blending, grinding, and .
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WEBMay 1, 2023 · Coal water slurry (CWS) is a clean coalbased liquid fuel that can replace heavy oil. It is composed of 60–70% coal, 30–40% water, and a small number of additives [3], [4]. Because CWS has a low transportation cost, low pollutant emission, and high combustion efficiency, is being widely used as boiler fuel and gasifiion raw material [5 ...
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WEBNov 1, 2019 · The effects of particle size, oil shale content, dust concentration, dispersion pressure and inert dust on the minimum ignition temperature (MIT) of coal and oil shale mixed dust clouds (COSMD) were investigated in a dust cloud MIT testing system to understand the intrinsic mechanisms of these factors affecting the MIT of COSMD. The .
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WEBNov 1, 2008 · Since use of coal–water mixture has some inherent problems [1], [3], therefore coal–oil–water (COW) suspension appliion is becoming economically advantageous over the coal–water and coal–oil fuel technology. On the other hand increasing prices of oil relative to coal are also forcing the world for economically .
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WEBFeb 1, 2024 · The lowcost raw coal was utilized as a precursor to synthesize series of carbon fiber membranes for efficient oil–water separation. • The carbon fiber membranes were coated with silicone using a vapor deposition technique.
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WEBThis invention relates to a mixed fuel comprising a coal powder or the like and heavy oil obtained by adding and mixing a dilute aqueous solution of a watersoluble highmolecular compound and a carbonaceous solid fuel powder such as coal powder or the like (hereinafter referred to as "coal powder and the like") to heavy oil so as to disperse the .
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WEBDec 1, 2012 · The objective of this research was to seek a cost effective solution to prepare adsorbents for nitrogen oxide from surplus sludge. Leaf litter and powder coal ash were used as cheap and easily available additives. An adsorbent for nitrogen oxide was prepared by pyrolysis of dried sludge mixed with zinc chloride. Under optimum pyrolysis .
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WEBNov 1, 2021 · The present review paper summarizes the uptodate research advancements made in the use of mixed reagent systems to improve the separation efficiency of coal flotation. Experimental and molecular dynamics simulation approaches have been adopted to enhance floatability, and reagent adsorptions are also discussed.
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WEBJun 15, 2020 · For each test, 2 g of coal (– mm) was prepared and mixed with the different solutions (FO, diesel oil, and deionized water) for 4 min using a magnetic stirrer. ... To improve the efficiency of the coal flotation, the oil collectors must ... Effect of microemulsion on lowrank coal flotation by mixing DTAB and diesel oil. Fuel, 260 ...
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WEBApr 3, 2020 · Coal–water slurry or coal–water mixture (CWS or CWM) is a complex solid–liquid dispersion. Several research works have been done concerning the production and use of CWSs being developed worldwide in several different governmental, industrial and academic facilities. In the present paper, studies on the developments achieved in .
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WEBOct 10, 2022 · In conclusion, the reduced iron powder is involved in the reaction, and the desulfurization effect of magnetic coal separation is greatly improved. The optimal desulfurization effect can be achieved by thoroughly mixing coal and reduced iron powder with a mass ratio of 5:2 at 600 °C for 1 h after treatment.
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Pulverized Coal Combustion. PCC technology is a widely utilized technology to generate energy from fossil fuel, especially coal [15]. In this technology, pulverized coal is injected to combust in a furnace in the presence of a controlled level of air. The heat generated is used to produce highpressure steam driving a steam turbine to ...
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WEBMar 26, 2021 · The effect mechanism of mixing ratio on the adsorption behavior of lowrank coal surface using mixed collectors has not been systematically studied.
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WEBFeb 15, 2023 · The natural density and porosity of reef limestone on reefs of Xisha Islands are between and g / cm 3 and to % [8], respectively. Previous research has shown that reef limestone is characterized by high porosity, low density, and low strength, which are greatly different from the terrestrial rocks.
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WEBJan 1, 2022 · [Show full abstract] efficiency of the boiler declines slightly with the mixing ratio of biomass increasing, and the exhaust SO2 is much lower than expected. The cocombustion of biomass with coal ...
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WEBThe effect of these pollutants can cause the poisoning of drinking water which affects the physical and mental health of living things and cause tremendous damage to the ecosystem. Waste minimization, treatment, and safe disposal are the threeprong approaches to controlling and managing drilling fluid wastes [ 3 ].
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WEBFeb 15, 2024 · The compressive strength test sample is consisted of cement, CGS, coal gangue, activators and water, among which the ratio of cement, CGS, coal gangue and water was 1:7:2:, and the ratio of coarse, medium and fine coal gangue was 1:1:3 [21]. The prepared slurry was poured into the cylindrical molds with a size of 50*100 mm, .
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WEBOct 1, 2021 · According to molecular depolymerization theory, rapid preheating relaxes the macromolecular structure of coal, thereby enhancing its fluidity during thermoplastic stage. After preheating coking coal, the cold and hot strengths of coke are commonly improved. In this review, the shortcomings and future research scope of the rapid preheating are ...
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WEBJun 1, 2019 · The preparation of coal water slurry (CWS) as a new substitute for oil and the factors affecting the stability of CWS were studied in this paper. Dry method was used to prepare CWS. Dry coal water ...
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WEBJan 11, 2021 · Wetting coal is one of the most widely used methods for dust mitigation, including water spraying for airborne dust and water infusion in coal seam 3. Wetting process refers to the process of ...
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WEBMay 1, 2000 · The viscosity of coal water slurry at the shear rate of 100 s⁻¹ decreases with an increasing HTD temperature, which is probably due to the decrease of volume of lignite particles caused by the ...
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WEBFeb 25, 2005 · The preparation of stable waterinoil (W/O) emulsion is critical for the success of production of stable coal–oil–water slurry. The present study was undertaken to experimentally investigate the effects of different process variables on emulsion stability. The emulsion was prepared using 100 ml colloid mill with sorbitan monooleate (SM) as ...
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WEBCoal fly ash (CFA) is one of the industrial byproducts of burning coal for energy production and has unburned carbon, which negatively affects its full potential use. The flotation technology can be effective in separating unburned carbon from CFA, and the prestirring time is crucial for the ideal initial conditions during the flotation process. To find the .
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WEBEffect of coal properties and activation Effect of coal rank. ... and cyanide from water (Depci, 2012). Effect of porous structure ... several studies have investigated the use of coals with high mineral content, coal waste, coal residue, and heavyoil fly ashes for AC production (Abdulsalam, 2019, IllánGómez et al., 1996
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WEBNov 15, 2022 · Municipal sludge (MS) is used to prepare coal water slurry (CWS). This practice is beneficial for resource utilization and reduces treatment costs and environmental pollution. In this study, alkalimodified municipal sludge (AMS) was prepared with Ca(OH)2 as modifier and mixed with coal to produce AMSCWS. The effect and mechanism of .
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WEBJun 12, 2022 · Abstract Evaluating the coupling of moisture content with supercritical CO2 (ScCO2) in coal is important for CO2 geological sequestration and enhanced coalbed methane recovery. Changes of minerals and microstructure in bituminous coal after ScCO2water treatment were explored employing Xray powder diffraction and micro .
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WEBNov 1, 2019 · The effects of particle size, oil shale content, dust concentration, dispersion pressure and inert dust on the minimum ignition temperature (MIT) of coal and oil shale mixed dust clouds (COSMD) were investigated in a dust cloud MIT testing system to understand the intrinsic mechanisms of these factors affecting the MIT of COSMD.
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