WEBMay 15, 2023 · The effective utilization of the coal liquefaction residue (CLR), which contains about 80% organic matter, is of great significancefor improving the oil yield of the direct liquefaction process ...
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WEBThis article is cited by 32 publiions. Subhashini Vashisth,, Vimal Kumar, and, Krishna D. P. Nigam. A Review on the Potential Appliions of Curved Geometries in Process Industry.
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WEBFeb 2, 2012 · The various geopolitical problems associated with oil have rekindled interest in coal, with many countries working on projects for its liquefaction. This study established the feasibility of coal liquefaction through a technical and economic examination of direct coal liquefaction (DCL), indirect coal liquefaction (ICL) and hybrid coal liquefaction .
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WEBGet instant access. Purchase Access. Read this article for 48 hours. Check out below using your ACS ID or as a guest.
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WEBJul 1, 2021 · The liquefaction approach refers to the direct coal liquefaction process, of which, the main products are diesel and jet fuel. The pyrolysis approach is the deep processing of coal tar produced via medium and lowtemperature pyrolysis. Download : Download highres image (224KB) Download : Download fullsize image; Fig. 1.
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WEBFeb 1, 2000 · The 150 t/d NEDOL coal liquefaction pilot plant (PP) has validated the superior technical features with highly active liquefaction alyst and hydrogendonatable recycle solvent.
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WEBMay 1, 1999 · An overview of conversion of residues from coal liquefaction processes. S. Khare M. Dell'amico. Environmental Science, Chemistry. 2013. Direct coal liquefaction (DCL) is a process for converting coal to synthetic oils, which can be refined to make transportation fuels. Residue from this process contains inorganic material such as..
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WEBDec 1, 1999 · The report presents the historical context of coal liquefaction technologies to date and introduces the generic coal liquefaction processes along with descriptions of specific technologies and their current state of development and exploitation. The report concentrates mainly on those technologies which have been developed to a process ...
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WEBMay 1, 2000 · A coal liquefaction pilot plant of the NEDOL process, supported by the New Energy and Industrial Technology Development Organization (NEDO), was in successful operation for a total of 269 days at Kashima, Japan. The liquefaction section consisted of three reactors, 1 m in diameter, connected in series, and processed 150 tons of coal per .
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WEBJan 8, 2014 · This paper studies the properties of the blends composed of DCLR (direct coal liquefaction residue) and asphalt using two different processing methods, compares the regulation that the DCLR additive content and processing method take influence on the hightemperature properties, lowtemperature properties and durability of the blends. It .
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WEBApr 1, 2008 · The rate dominated process for coal liquefaction was the reaction of PAA to (O + G), and the oil is mainly from coal at heatingup stage and PAA at isothermal stage, respectively. The weight percent of unreactive coal at isothermal stage estimated by the kinetic calculation is consistent with experimental value approximately, which indie ...
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WEBOn the surface, it looks pretty much the same as the process of coal liquefaction. It is a thermochemical conversion process of organic material into liquid biocrude and coproducts. Depending on the process, it is usually conducted under moderate temperatures (300400°C, lower than coal liquefaction) and pressures (1020 MPa, similar or ...
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WEBDec 1, 2021 · Direct coal liquefaction (DCL) at mild conditions (about 693 K and less than 10 MPa) is an important and efficient way for the conversion of coal to high valueadded chemicals and fuel oil. In the process of DCL, the pre‑hydrogenation of a recycle solvent is an important step and the recycle solvent is always heated from low temperatures to .
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WEBJan 1, 2018 · Fig. 12 shows the total costs of the whole coal liquefaction process together with the costs of four major parts: coal price, (coal) transportation, DCL production and distribution. Among three, "DCL_R" is the most economical one, the price of which is only two third of "DCL_H". For "DCL_H" and "DCL_R", the price caused by the ...
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WEBJun 1, 2024 · Mild direct coal liquefaction (autogenous pressure, no alyst, no H 2 gas) of Springfield coal in fluid alytic cracking decant oil is shown to effectively produce coal extract precursors to spinnable mesophase pitch. This work demonstrates that the coal extract can be thermally treated to obtain mesophase pitch in a facile onestep process, .
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WEBDec 1, 2003 · In coal liquefaction process initial coal particle size can be considered as one of the important process parameters. In this work, particles of coal are prepared by pulverisation and separation ...
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WEBAbstract. First operated in 1973 to refine a sulfurfree solid fuel from coal, the Electric Power Research Institute's small pilot plant at Wilsonville, Alabama, is now a focal point for research and development in coal liquefaction. The solventrefined coal process (SRC) is largely free of ash and so low in sulfur content that it can be burned ...
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WEBOct 1, 2023 · The annual amounts of oil production are 1,000,000 tons for both the proposed carbon neutral technology baseddirect coal liquefaction and the traditional direct coal liquefaction process. The primary data used in this work were mainly from the 108 × 10 4 ton/year direct coal liquefaction factory of Shenhua Group (now named .
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WEBSep 15, 2009 · Novel use of residue from direct coal liquefaction process. Direct coal liquefaction residue (DCLR) is, commonly, designed to be used as a feed stock for gasifiion or combustion. Use of DCLR as a value added product is very important for improving overall economy of direct coal liquefaction processes. This study shows that .
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WEBSep 1, 1981 · The Exxon Donor Solvent (EDS) Process has been successfully employed to liquefy coals of varying rank. Bituminous, subbituminous and lignitic coals have been processed in the continuous, integrated 40 kg day −1 Recycle Coal Liquefaction Units and 1 t day −1 Coal Liquefaction Pilot plant loed at Baytown, Texas. Recent operations .
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WEBSep 5, 2022 · 2. Effect of liquefaction processing conditions on the formation and quenching of coal free radicals. Fuel, 1980, 59(4): 227–232. Article CAS Google Scholar Petrakis L, Grandy D W. Free radicals in coal and coal conversions. 6. Effects of liquefaction process variables on the insitu observation of free radicals.
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WEBJul 1, 1994 · There appears to be considerable potential for improving the processing and economics of direct coal liquefaction through the development and appliion of highly dispersed alysts, where the aims are to promote the process of primary coal dissolution, and produce a solubilized product that can be readily upgraded in a second stage over a .
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