WEBAward End Date (Contract End Date): N/A Small Business Information. Clarke Rajchel Engineering
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WEBJan 1, 2024 · Synergistic enhancement of coal slurry water sedimentation and dehydration process using PDMDAAC/PAM. Liu Runyu ... PAM // Journal of Cleaner Production. 2024. Vol. 434. p. 140160. GOST all authors (up to 50) Copy. Liu R., Yuan J., Huang L., Yu S., Zhao Y., Duan C., Jiang H. Synergistic enhancement of coal slurry water .
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WEBOct 23, 2011 · This electrochemical reductive desulfurization (ERD) method for coal water slurry (CWS), which was an offshoot of the research Novel Desulfurization Method of Sodium Borohydride Reduction for Coal Water Slurry (Shen, Y. F.; Sun, T. H.; Jia, J. P. Energy Fuels 2011, 25, 2963–2967.), utilized hodic reduction to change some .
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WEBFeb 28, 2021 · Previous studies have shown that the semicoke water slurry has better slurry performances than the CWS. At the same time, a proper amount of coal slime can be used as an additive to prepare highperformance semicoke water slurry, which can improve the stability of slurry and solve the problem of the low utilization rate of waste .
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WEBNov 1, 2021 · During the coal mining process, underground water is generated from the longwall face. In the meantime, the coal cutting process would produce coal particles. Coal slurry is generated in the underground working site, especially for water abundant coal mines. The generated coal slurry is treated to prevent water pollution. Due to the .
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WEBSep 16, 2009 · The fuels are based on biomass ( residuals like straw and waste wood) which has to be. preprocessed in a pyrolysis step to gener ate a pumpable suspension (slurry) and on fossil. sources ( ...
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WEBCoal/petcoke–water slurry viscosity is affected by interparticle interactions of the solids in water, which, in turn, is governed by the surface chemistry of the solids. To determine interparticle interactions of these carbonaceous solids in water, interfacial energies were determined on the basis of surface chemistries characterized by contact angle and ζ .
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WEBJun 15, 2022 · In the production process, noncompliant wastewater was treated and reused in industrial production, which can greatly reduce the consumption of fresh water and lessen pollutant emissions[4], [5]. Coal water slurry (CWS)[6], [7] refers to a suspended dispersion system containing coal, water and a small amount of additives.
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WEBJan 1, 2022 · 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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WEBMar 20, 2015 · The model of coalwater slurry gasifiion process is established with Aspen Plus. Based on the model, the amount of slag and solid content of each stream can be readily obtained. In addition ...
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WEBthe manufacture of consistent, stable coalwater slurries is problematicowing to the naturally broad range of coal properties and the complexity of the behavior ofsolidliquid mixtures. IF THE CWS PRODUCER KNOWS THE EFFECT OF CHANGING PROCESS CONDITIONS ON THE SLURRY PRODUCT, ADJUSTMENTS IN PLANT OPERATING .
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WEBABSTRACT. In this study, the effect of slurry concentration and carbon dioxide capture and storage (CCS) equipment on the technoeconomic feasibility of a coaltomethanol (CTM) process with coal water slurry (CWS) gasifiion are investigated, while the effective means to improve the economic benefit of methanol factory are proposed.
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WEBMar 14, 2022 · 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 60–75% coal, 25–40% water, and 1% additives; it is environmentally friendly At present, the anionic additives used in industrial appliions include .
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WEBMar 15, 2022 · Water hardness in coal tailings can be characterized approximately with the concentration of multivalent ions, including Ca 2+ and Mg 2+, which are brought to coal tailings through the clean water and leaching from minerals . The results of the research study showed that the mineralogical composition of runofmine coal directly affected the ...
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WEBJan 15, 2017 · This paper provides insight on the effects of flame temperature and alkali metals radiation characteristics on reaction process of different coal ranks. ... ethylene glycol, coal liquefaction, hydrogen production and other fields. ... [8–11]. Coalwater slurry gasifier (CWSG) in chemical industry is a type of coalwater slurry fed entrained ...
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WEBMay 1, 2015 · The technology of coal burning in the form of coalwater slurry (CWS) allows effectively burning the lowgrade coals and utilizing the coal waste (Maltsev et al., 2014;Khodakov, 2007;Trubetskoi et ...
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WEBFeb 6, 2012 · Taking the opposed multi‐burner (OMB) coal water slurry (CWS) gasifiion system as the simulation object, based on the gasifiion process flow‐path and the flow field distribution ...
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WEBNov 3, 2011 · This electrochemical reductive desulfurization (ERD) method for coal water slurry (CWS), which was an offshoot of the research Novel Desulfurization Method of Sodium Borohydride Reduction for Coal ...
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WEBJan 1, 2023 · Treating BDO tar from coalwaterslurry technology is effective. • Na in BDO tar accelerates cogasifiion process. • Na inhibits the formation of defective and amorphous carbon structures in coal char.
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WEBJul 1, 2021 · Zhao et al. [62] used a complete set of swirler separation devices to realize the carbon–ash separation of Texaco coal–water slurry gasifiion slag, as shown in Fig. 10. Highash products were obtained and used as building materials, and highcarbon products were used to prepare a coal–water slurry for regasifiion.
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WEBDec 1, 2013 · Aspen plus software was employed to simulate the opposed multiburner gasifier (OMB) methanol production process. The system concludes gasifiion scrubbing system and purifiion shift system. The distributions of ammonia concentration in streams were obtained. The study demonstrates that ammonium crystallization .
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WEBMar 1, 2015 · The feasibility of using the forward osmosis (FO) process involving brown coal as draw agent to reclaim clean water from dye wastewater is evaluated in this study. It is found that brown coal not only has enough driving force for drawing water from dye wastewater but also can be reconstituted during the FO process, thus resulting in .
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WEBNov 4, 2021 · A new cleaner power generation system (IPGS) is proposed and investigated in this paper. Integrating combined cycle with supercritical water gasifiion of coal, the thermodynamic energy of the produced syngas is cascade utilized according to its temperature and pressure, both sensible and latent heat of the syngas can be recycled .
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WEBOct 15, 2019 · To improve the efficiency of the gasifiion or combustion process of coal water slurry (CWS), it is significant to optimize the rheological properties and increase the solid concentration of CWS.
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WEBJan 25, 2024 · Meanwhile, much heat was consumed in this process [22]. Mu et al. considered coal water slurry concentration as the key factor in supercritical gasifiion and believed the heating of water was the maximum exergy [23]. And our group showed that much heat was input into the system in gasifiion reactor [24]. A part of heat input .
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WEBClean coal technology is being applied and popularized at an unprecedented rate in China. 3 Coal water slurry (CWS) is a coalbased clean liquid fuel, which is currently prepared with refined coal. In the course of coal washing, most of the ash and inorganic sulfur can be removed, so the concentration of ash and SO 2 will be lower than that of ...
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WEBSep 1, 2013 · Coal water slurry (CWS), a type of novel fuel in the form of liquefaction of coal, is usually prepared by physical method. The concept of CWS was first advanced by researchers in 1970s when the oil crisis broke out. ... Finally the PC copolymer used for the additive of CWS was obtained. The synthesis process for the product was shown in Fig. .
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WEBMass fractions of the main components (coal slime and water) varied in the range of 4550%, which is a typical ratio in the technology of coal water fuels (Bae et al. 2012; Staroń et al. 2019 ...
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WEBGlobeCore conducted studies of coal grinding and subsequent preparation of coalwater slurry fuel on AVS150. The tests showed the following results: energy consumption is 9 kW / h per metric ton. This indior for a vibrating mill is 55 kW / h; calorific value of produced fuel is 42,000 kcal. Thus, it is possible to produce watercoal fuel on ...
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WEBNov 15, 2023 · Fig. 1 shows the concept of the singlestage and twostage supercritical water gasifiion system. As reported in previous studies [46, 48, 50], the singlestage system (Fig. 1 (a)) with internal oxidation commonly consists of four, coal slurry is injected into the gasifiion reactor after pumping and preheating, while .
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WEBMar 1, 2021 · For waste liquid coal water slurry (WCWS), the existing reports mainly focus on the influence of the substances in a single wastewater system on the performance of coal water slurry; however, preparation of slurry with various highconcentration organic waste liquids that are difficult to dissolve in water has not been widely .
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WEBMar 1, 2014 · The coal powder was mixed slowly in a pot containing known quantity of dispersant and deionized water. The mixture was continuously stirred by means of a homogenizer during the addition of coal, and then the stirring of the slurry was continued for 15 min at 3000 rpm to ensure the homogenization of CWS.
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WEBHigh degree of automation. Excellent material quality. Feeding size: ≤25mm. Capacity: /h. Applicable materials: Coal, lignite, gangue and other materials. Get Price Now. Coal water slurry ball mill (CWS ball mill) is the key equipment for coal water slurry fuel production, which is commonly used in coal water slurry power plant.
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