Coal slurry pipeline transportation refers to the process of using highpressure pumps to continuously transport coal slurry through closed pipes to endusers ( Lahiri and Ghanta, 2008 ).
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Wet coal fines are currently disposed of as waste due to the lack of an economic process to remove the moisture in it, so that it can be combusted in a conventional process. Coal fines can contain up to 80 wt% water after flotation, which can be reduced to 30~55 wt% through thickening via gravity settling/filtration using a large filter funnel.
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(b) In the industrial application process, the active component of the syngas produced from the gasification of the coal mixed wastewater slurry can reach % and has a higher H2 content than the syngas produced from ordinary coal water slurry.
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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 MS and AMS on slurry ability, stability, and combustion ...
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The attraction of the coalwater slurry is its complete independence of an oil supply; coaloil mixtures are effectively a means of extending oil supplies and are less economically beneficial. ... On the other hand, the CO 2 capturing process is required for methanol production from the IGCC power plant. Therefore, the effect of the CCS system ...
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article{osti_41607, title = {The formulation and combustion characteristics of coalwater slurry fuels from impounded coal fines}, author = {Miller, S F and Morrison, J L and Scaroni, A W}, abstractNote = {The current political and economic climates mandate greater efficiency in energy production and use. One area of waste in coal processing involves the production and impoundment of fines ...
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Abstract. Coalassisted water electrolysis can reduce the electricity consumption of traditional water electrolysis by 4060%, but the rate of hydrogen production in this process is very slow. Some coal gasification wastewater can promote the electrical oxidation of coal, the addition of which can achieve resource utilization of wastewater ...
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Illustration of concentrated suspensions showing that at a given solid's content the volume of sediment depends on particle aggregation. Source: After Laskowski and Parfitt, 1989 with permission of Taylor Francis.
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(b) In the industrial application process, the active component of the syngas produced from the gasification of the coal mixed wastewater slurry can reach % and has a higher H2 content than ...
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Simplified block diagram of gasification process for syngas production. Coal slurry is first prepared by crushing the coal to a size of mm particle diameter along with water addition. The coal slurry is the pumped to the gasifier where the reactions take place in the controlled amount of oxygen.
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Coalwater slurry is a new, efficient and clean coalbased fuel. It is a mixture of 6570% coal with different particle size distribution, 2934% water and about 1% chemical additive. Many countries have researched and developed it as coalbased fuel technologies based on longterm energy strategy considerations.
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The purpose of this research is to determine the effect of the series system on the SCWG of watercoal slurry. This paper has established an innovative series SCWG system and modeled the entire flowsheet. ... Thermodynamic study on the integrated supercritical water gasification with reforming process for hydrogen production: effects of ...
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The temperature in the reactor was varied in the range of °C. An analysis of the composition of the gas obtained during the gasification of three fuels showed that the coalwaterslurry (40 wt% coal, 60 wt% water) was characterized by the maximum yield of H 2 ( vol%) and the minimum share of CO 2 ( vol%). The largest ...
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Municipal sewage sludge always includes considerable amount of water, noxious substances, and varying chemical compositions; therefore, sludge utilization is imposed. Coalsludge slurry (CSS), which is made by blending sewage sludge with coal, water, and additives, is being identified as a new and effective sludge utilization technology. The main objectives of the present investigation are ...
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In recent years, researchers have focused on improving the reaction rate of coalassisted water electrolysis from several perspectives. Yin et al.[21] investigated the performance of a series of solution catalysts in coal slurry electrolysis, and the results showed that Fe 3+ has the best catalytic effect. Jin[22] evaluated the kinetic ...
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Therefore, there are many methods studied for saving energy and increasing efficiency of hydrogen production [7], [8], [9]. CWS (coal water slurry) electrolysis not only could increase efficiency of hydrogen production (Faraday current efficiency closed to ) from water electrolysis [10], [11], but also could achieve purity of coal, such as ...
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Coal water slurry (CWS) is an important cleancoalbased liquid fuel with the characteristics of highefficiency and lowpollution. This paper aims to implement the principles of clean production and prepare CWS by coblending coal particles and polyethylene terephthalate (PET) microplastics.
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Coal is one of the most important fossil fuels in the world. In recent years, the demand for fossil fuel energy has increased. Coal water slurry (CWS) is composed of approximately 6075% coal, 2540% water, and 1% additives; it is environmentally friendly At present, the anionic additives used in industrial applications include naphthalenesulfonates, aliphatic sulfonates, lignin sulfonates ...
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The prepared coalwater slurry consisted of 23% to 50% Lochiel coal and 40% Bowman's coal. The authors found that the solid concentration a ff ected the nature of the slurry, with 23% Newtonian
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Coalwater slurry or coalwater mixture (CWS or CWM) is a complex solidliquid 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.
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1. Introduction. Coal has long been used as a fossil fuel to meet a significant proportion of the world's electricity needs (Blissett and Rowson, 2012; Cao et al., 2016).Despite its wide range of applications, the efficiency of converting coal into electricity is often less than 40%, and its extensive use raises a number of environmental concerns (Jewell et al., 2019; Liu et al., 2005).
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The main production process of BDO is the Reppe method. In the purification process ... on the gasification process of coal water slurry, the SEMEDX (Tescan VEGA3 SBHBRUKER XFlash 6|30, Germany ...
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One of the lots was of ultraclean coalwater slurry fuel (UCCSF) for which a twostage caustic and acid leaching procedure was developed to chemically clean the coal. As a part of the contract, AMAX R and D more » developed a conceptual design and preliminary cost estimate for a commercialscale process for UCCSF manufacture.
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In 2021, Chen [34] investigated the influence of coal rank on coalassisted water electrolysis for hydrogen production, utilizing a constant potential of approximately V, which remains below V. These studies laid the foundation for the application of CWS electrolysis and demonstrated the energysaving potential through anodic CWS ...
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Dispersion mechanism of coal water slurry prepared by mixing various highconcentration organic waste liquids Shuangni Wang a, Jianzhong Liu a, Sarma V. Pisupati b, Dedi Li a, Zhihua Wang a, Jun Cheng a Add to Mendeley https://// Get rights and content Abstract
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A material supplier from Belgium would like to produce limestone powder for his custome...
India is rich in various mineral resources and it is an important mineral processing market
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