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US4253937A - Coal liquefaction process - Google .Deze pagina vertalen

Particulate coal is contacted with a hydrogen donor solvent, preferably a vapor phase hydrogen donor solvent, to swell the coal particles and, thereafter, the swollen coal particles are subjected to coal liquefaction conditions in the absence of liquid phase solvent.

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Coal liquefaction — Wikipedia Republished // .Deze pagina vertalen

Coal liquefaction is a process of converting coal into liquid hydrocarbons: liquid fuels and petrochemicals. This process is often known as "Coal to X", where X can be many different hydrocarbon-based products. However, the most common process chain is "Coal to Liquid Fuels" (CTL).

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Coal liquefaction - Infogalactic: the planetary knowledge core

Coal liquefaction is a process of converting coal into liquid hydrocarbons: liquid fuels and petrochemicals.The conversion industry is commonly referred to as "coal conversion" or "Coal To X". "Coal to Liquid Fuels" is commonly called "CTL" or "coal liquefaction", although "liquefaction" is generally used for a non-chemical process of becoming liquid.

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Reaction Engineering of Direct Coal LiquefactionDeze pagina vertalen

Direct coal liquefaction has been studied and practiced since the 1930s. It was used in Germany during World War II to produce synthetic fuels when there was no oil allowed into the country. Since then, it has been studied in the United States and many different technologies have been investigated. Since the US is rich in coal resources, this is one way to be energy independent.

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Coal Liquefaction - ResearchGateDeze pagina vertalen

stage coal liquefaction is proposed in the chapter that consist of the following stages: (1) coal pretreatment, (2) coal dissolution, (3) catalytic hydrocracking, and (4) catalytic upgrading ...

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Direct Coal Liquefaction - an overview | .Deze pagina vertalen

D.J. Harris, D.G. Roberts, in The Coal Handbook: Towards Cleaner Production: Coal Utilisation, 2013. 16.2.1 Direct CtL. Direct Coal Liquefaction (DCL) commonly refers to catalytic hydrogenation of coal in a recycled oil solvent at high pressures with a catalyst. While a range of process configurations have been proposed, the most common version involves at least two high pressure slurry ...

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Environmental aspects of coal liquefaction. .Deze pagina vertalen

Environmental aspects of coal liquefaction. [Research on environmental pollution problems resulting from coal liquefaction has received little attention]

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$1.2B West ia coal-to-liquids plant announced ...

6/24/2019 · A West ia company last week announced plans for a $1.2 billion coal-to-liquids plant to be built in Mason County, West ia, Kallanish Energy learns. The West ia Department of Environmental Protection last week approved a draft construction permit for the project, to be located on more than 200 acres of land along the Ohio River, roughly five miles north of Point Pleasant, West ...

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US5916826A - Pelletizing and briquetting of coal .Deze pagina vertalen

A coal agglomerate is produced by the combination of coal fines with a binder obtained by the direct liquefaction of biomass material. The direct liquefaction is carried out in the absence of oxygen at typical temperatures between about 450 and 700° F. and typical pressures between 200 and 3,000 psi, according to known liquefaction processes.

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Coal Liquefaction | The Canadian EncyclopediaDeze pagina vertalen

Coal liquefaction is a process that converts coal from a solid state into liquid fuels, usually to provide substitutes for petroleum products. Coal liquefaction processes were first developed in the early part of the 20th century but later application was hindered by the relatively low price and wide availability of crude oil and natural gas.

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coal liquefaction resulting - terschellingveldzicht

coal liquefaction resulting. Coal liquefaction - Wikipedia. Coal liquefaction is a process of converting coal into liquid hydrocarbons: liquid fuels and petrochemicals.This process is often known as "Coal to X", where X can be many different hydrocarbon-based products. However, the most common process chain is "Coal to Liquid Fuels" (CTL).

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COAL: LIQUID FUELS · PDF-bestand

Direct coal liquefaction converts coal to a liquid by dissolving coal in a solvent at high temperature and pressure. This process is highly efficient, but the liquid products require further refining ('hydrocracking' or adding hydrogen over a catalyst) to achieve high grade fuel characteristics. Indirect coal liquefaction first gasifies the ...

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US3852182A - Coal liquefaction - Google Patents

Insoluble material is separated from a coal liquefaction product by use of a promoter liquid prepared from a fraction of the coal liquefaction product. The promoter liquid is prepared from a fraction having a 5 volume percent distillation temperature of at least 250*F. preferably at least 400*F. and a 95 volume percent distillation temperature of at least 350*F. and no greater than 750*F. by ...

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Coal Liquefaction - Kaneko - - Major Reference .Deze pagina vertalen

Abstract The article contains sections titled: 1. Introduction 1.1. Commercial Development 1.2. Historical Background 2. Indirect Coal Liquefaction 2.1. Preparation of Synthesis Gas 2.1.1. Coal Gas...

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10.6. Direct Liquefaction Processes | netl.doe.govDeze pagina vertalen

Reason for Discussion of Direct Liquefaction of Coal in Gasifipedia As the following discussion of Direct Coal Liquefaction (DCL) explains, the fundamental process approach of DCL does not involve gasification at all. Therefore it would seem to be entirely out of scope of Gasifipedia. However, the following considerations require that discussion of DCL be included:

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Coal Liquefaction - Dadyburjor - - Major .Deze pagina vertalen

Coal liquefaction incorporates both an increase in the H/C ratio and removal of heteroatoms (S, N, O) and inorganic oxides (ash). Successful industrial direct liquefaction processes must incorporate both these steps, along with the transport of solid and slurry ‐ phase material in large – scale processing.

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Challenges and opportunities for coal gasification in ... · Fișier PDF

Table 1 Typical coal chemical projects' unit consumption of coal and water and release of CO 2as a by-product (Seeking Alpha, 2012; ICIS, 2013) Chinese applications Standard coal consumption Water consumption CO 2emissions tonnes/tonnes Indirect coal liquefaction 4.39 13 5.0 Coal-to-olefins 6.68 15-20 5.5 Coal-to-ethylene glycol 2.55 14 2.0

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coal liquefaction process - QuinoaTipsDeze pagina vertalen

Olson: Coal Liquefaction: Issues Presented by a Developing Technology Published by TU Law Digital Commons, 2013. Contact Supplier Overview of Coal Liquefaction - Energy. 4 Direct Coal Liquefaction Process Coal Refining Liquefaction Hydro-treating Fractionation C 1 –C 2 H 2 S, NH 3, CO x Make-up Hydrogen Coal + Catalyst Slurry.

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Liquid Fuel Production by Co-liquefaction of .Deze pagina vertalen

Table 2: structural parameters obtained from brown-ladner method [6] of the heavy fraction resulting from liquefaction and co-liquefaction of eucalyptus wood and loy yang coal. Co-liquefaction (measured) Co-liquefaction (calculated) Eucalyptus Brown coal fa 0.83 0.83 0.82 0.83 Haus/Caus 0.87 0.89 1.10 0.81 n 1.24 1.25 1.18 1.28 1 0.39 0.40 0.56 ...

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Coal liquefaction | BritannicaDeze pagina vertalen

21-7-2020 · Coal liquefaction, any process of turning coal into liquid products resembling crude oil.The two procedures that have been most extensively evaluated are carbonization—heating coal in the absence of air—and hydrogenation—causing coal to react with hydrogen at high pressures, usually in the presence of a catalyst.Coal hydrogenation was extensively used in Germany in World War II to ...

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