WEBJul 1, 2009 · The oxygencontaining functional groups were effectively removed during the hydrothermal process. Compared with the raw coal and coal sample directly swollen from raw coal, the yield of pyrolysis tar for the coal samples of the combined process at 250 °C reached %, increased by % and %, and the pyrolysis water yield for the .
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WEBJun 1, 2022 · A novel polygeneration process for coal gasifiion and ironmaking was proposed. • The thermodynamics model predied the ideal products for variant cases of GRCP. • The exergy efficiency of GRCP is slightly lower than that of CGPGSP as %. • Storage of chemical exergy in DRI was an essential energysaving reason.
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WEBOct 17, 2017 · Mathematical models were developed in this study to quantify the gas and water transfer between coal matrix and cleat network during coalbed methane (CBM) drainage, which can be helpful to achieve some useful findings on features of fluid migration within coal reservoirs during drainage process. A typical CBM well loed at southern .
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WEBJul 15, 2004 · Fundamental studies for the process development to produce ashfree coal, socalled Hypercoal, demonstrate that the solvent deashing technology is a promising way to produce the Hypercoal in a reasonable price. Some kinds of bituminous coals showed high extraction rates around 70 wt.%daf with the tworing aromatics solvent.
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WEBAug 12, 2022 · The compression process of pulverized coal is completed within approximately 100 kPa, even if the final tank pressure is as high as 4000 kPa. The particle size also has a significant effect on the compression behaviour: when the Sauter mean diameter is greater than approximately 45 μm, the compression effect is significantly .
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WEBJan 30, 2016 · Quenching is a key approach to obtain high acetylene yield in the process of coal tar pyrolysis to produce acetylene in a thermal plasma reactor due to the thermodynamic characteristics of acetylene. Experiments of coal tar pyrolysis were carried out in a labscale H2/Ar plasma reactor under various quenching conditions. Meanwhile, .
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WEBJun 2, 2020 · Cohydrothermal carbonization of sewage sludge and coal slime for clean solid fuel production: a comprehensive assessment of hydrochar fuel characteristics and combustion behavior ... Cohydrothermal carbonization of coalbiomass blend: influence of temperature on solid fuel properties. Fuel Process Technol 167:711–720. Article .
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WEBJan 1, 2016 · Openair sun drying is a conventional source to dry plants, seeds, fruits, meat, fish, wood, and other agricultural or forest products as a means of preservation.
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WEBDOI: / Corpus ID: ; Life cycle assessment of ammonia synthesis based on pulverized coal entrained flow gasifiion technology in China article{Ren2021LifeCA, title={Life cycle assessment of ammonia synthesis based on pulverized coal entrained flow gasifiion technology in China}, author={Ke Ren and .
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WEBJun 15, 2017 · Gasifiion is the core unit of coalbased production systems and is also the site where one of the largest exergy destruction occurs. This paper reveals the exergy destruction mechanism of carbon gasifiion through a combined analysis of the kinetic method and the energy utilization diagram (EUD). Instead of a lumped exergy .
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WEBMay 1, 2019 · Preparation of mesophase pitch from refined coal tar pitch using naphthalenebased mesophase pitch as nucleating agent. ... The products were labeled as MP0, MP3, MP5 and MP10 by the additive contents. Characterization ... Fuel Process Technol, 177 (2018), pp. 219227. View PDF View article View in Scopus .
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WEBMay 1, 2017 · As Fig. 1 shows, coal separation process mainly consists of two parts, maximum solvent extraction of coal below 156 °C and group separation of soluble portions integrated LPE and CC near the room temperature. The multistep extraction processes were described in detail elsewhere [27].Briefly, coal sample was added into filter .
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WEBJan 1, 2023 · A restricted or quasiequilibrium model was developed to investigate the plasma cogasifiion process of biomass and coal. The effects of various parameters on the syngas composition for three gasifying agents (air, steam, and oxygen) were evaluated. ... CGE of the plasma process, and hydrogen production are comprehensively .
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WEBOct 1, 2022 · Coal Bottom Ash (CBA) is one of the byproducts of Coal sourced Thermal Power Plants. Unlike Fly ash most of the CBA are dumped as landfills rather than utilized. ... Udaybhanu G and Basu A. K A comprehensive characterisation of fly ash from a thermal power plant in Eastern India Fuel Process. Technol 87 259277. Google Scholar [23 ...
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WEBDec 15, 2016 · Of the three analyzed variants of hydrogen production in the coal gasifiion process, the most effective technology was the SH process of gasifying SBC. This variant had the highest hydrogen yield value per unit of mass of dry coal to be gasified ( kg H 2 Mg −1 ), while the hydrogen yield from SBC gasifiion using GET .
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WEBJan 15, 2022 · The urgent need to reduce CO 2 emission in China has stimulated renewed interest in the use of coal as raw material for chemical production. Oxidation in aqueous solution is a relatively mild method to depolymerize coal into oxygencontaining chemicals. In this paper, a novel technology combining thermal extraction (TE) of coal and the oxy .
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WEBAug 15, 2019 · An integrated process of insitu alytic cracking of coal pyrolysis tar and CO 2 reforming of methane (CRM) over activated carbon supported nickel (Ni/AC) was conducted to upgrade tar. The results show that a tar with more than 95 wt% light tar content can be obtained, and the light tar yield is increased by % at 650 °C over Ni/AC.
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WEBSep 1, 2015 · The synergistic effect between coal and plastic wastes during pyrolysis has also been studied in order to predict interactions that may occur. To complete the thermal study, different compounds that evolved during the pyrolysis process were studied by spectrometric analysis. These compounds will be important in defining chemical and .
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WEBFeb 1, 2016 · 1. Introduction. Compared with coal gasifiion or steam reforming for hydrogen production [1], [2], water electrolysis for hydrogen had some advantages, such as clean, purity, mild conditions and so on [3], [4].However, water electrolysis also had some limitations, such as high energy consumption [5], low current efficiency .
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WEBMay 1, 2017 · The alternative approach for elucidating the macromolecular structure of coal attempts to isolate the liquid products coal derived liquids from coal and then analyzes the representative components in the products to construct the original structure of coal [12], [13]. ... Fuel Process. Technol. (1986) A. Marzec Towards an understanding of ...
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WEBAug 15, 2016 · Semantic Scholar extracted view of "A proposed coaltomethanol process with CO2 capture combined Organic Rankine Cycle (ORC) for waste heat recovery" by Liu Xia et al. ... (NGCC) of a novel process for H2 production using a chemical Ca–Cu loop was proposed. This process is based on the sorptionenhanced reforming process .
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WEBDec 1, 2022 · The chemical kinetics calculations were performed using a doublePFR (plunger flow reactor) network to simulate the air staged ammonia/coal cofiring process. The first PFR approximates the reduction zone, and the outlet products are mixed with the added burnout air and supplied into the second PFR, subsequently, which represents .
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WEBFeb 1, 2000 · Flash pyrolysis of coal. Pyrolysis is the first step of coal conversion processes such as gasifiion, liquefaction, and combustion. Since pyrolysis proceeds under rather mild reaction conditions, low temperature and low pressure, attention has been paid to recover liquid products in high yields by utilizing pyrolysis: it has been called ...
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WEBJan 1, 2017 · Fig. 2 shows the details of the flowsheet which was built in Aspen Plus. The pyrolysis–gasifiion integration process (Fig. 2 (a)) is composed of an air separation unit (ASU), coal pyrolysis and gas separation unit, gasifiion unit, WGS unit, and gas cooling and cleaning these units were rigorously modelled using Aspen Plus The .
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WEBJan 1, 2016 · With the increase of BR in the fuel blend, the H 2 increases from % for the gasifiion of pure coal to % for the pure biomass and the CO and CH 4 increase from to % and to %, respectively with the increase of BR. The CO 2 decreases from to % with the increment of BR.
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WEBDec 1, 2023 · Section snippets Production process of fine coal system after optimization. In this coal preparation plant, the original production process is as follows: First, the raw coal is classified with 9 mm classifiion screen, then the oversize product enters the lump coal separation system for separation, while the undersize product is directly sold as .
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WEBAug 3, 2020 · Abstract. In view of highenergy consumption, high baking cost, and serious pollution emission during the baking process of tobacco leaves, thermogravimetric analysis is employed to investigate the combustion characteristics of coal, tobacco straw, and cinder. Analyzing thermogravimetricderivative of thermogravimetric (TGDTG) .
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WEBJan 4, 2016 · A novel polygeneration technology, hydrogen and power coproduction based on coal gasifiion integrated with a dual chemical looping process, has been proposed in this paper. This novel system was established by integrating chemical looping air separation, coal gasifiion, water–gas shift with calcium looping for enhancement .
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