WEBAug 1, 2022 · This research aims to upgrade Malaysian low rank coal namely Merit Kapit (MK) into mesoporous activated carbon (MKAC) via fast and convenient microwaveassisted H 3 PO 4 activation. The best activation conditions for MKAC were observed at 1:2 (MK to H 3 PO 4) impregnation ratio, radiation power 600 W, and radiation time 20 .
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WEBDec 26, 2018 · The normal yield of coal tar during the coal carbonizing process is around 4 %. Coal tar has a specific gravity normally in the range of to, but exceptionally it can go upto It depends on the temperature of carbonization. The lower specific gravity tars are generally produced when low carbonization temperatures are used.
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WEBJan 15, 2023 · The oxidation reaction of watersoaked coal is a relatively complex process, and its reaction characteristics are closely related to the molecular structure of coal. The oxidation and spontaneous combustion process of coal samples can be obtained through the change reaction of microscopic functional groups in lowtemperature oxidation [23], .
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WEBCoal is a combustible black or brownishblack sedimentary rock, formed as rock strata called coal is mostly carbon with variable amounts of other elements, chiefly hydrogen, sulfur, oxygen, and nitrogen. Coal is a type of fossil fuel, formed when dead plant matter decays into peat which is converted into coal by the heat and pressure of deep .
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WEBSep 15, 2021 · 1. Introduction. Traditional coal chemical production is characterized by low energy efficiency and high CO 2 emission. The hydrogentocarbon (H/C) ratio of coal is about 4:5, while those of methanol, olefins, liquid fuels, and natural gas, which are chemical products of coal, are about 2:1, 2:1, 2:1, and 3:1, respectively [1, 2].The mismatch .
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WEBDec 7, 2023 · We also project that China's coal chemical production in 2030 will require 21 Mt green H 2 to replace watergas shiftbased H 2. Coupling of coal chemical production and green hydrogen is a win ...
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WEBA singlestage process attempts to convert coal to liquids in a single reaction stage. Such process may include an integrated online hydrotreating reactor to upgrade the distillates, as shown in Figure 1. Technology developers included: HCoal (HRI, USA) Exxon donor solvent (Exxon, USA) SRC1 and II (Gulf Oil, USA) Conoco zinc chloride (Conoco ...
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WEBOct 1, 2010 · The process was simulated with the baseload conditions (Case 32) for 2 h and a 10% increase in flue gas flow rate was carried out over a period of 10 min after which the simulation was left to run for just less than 8 h. In both cases, all the controllers described in Section were active except the capture level controller.
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WEBThe operability of the HCoal Process was clearly demonstrated and it has been concluded that the process is feasible for scale up to Pilot Plant size. As a result of PDU operations. HRI concluded that hydroclone systems can be operated to increase the residuum concentration in the reactor, and that the higher concentration will permit ...
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WEBHCoal Syncrude product streams, prepared from Illinois No. 6 coal, have been obtained from the Trenton,, Process Development Unit of Hydrocarbon Research, Inc., and characterized by a combination of anlytical techniques.
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WEBMay 1, 2008 · A large amount of wastewater is produced in the Lurgi coalgasifiion process with the complex compounds carbon dioxide, ammonia, phenol, etc., which cause a serious environmental problem. Most of . Expand. 38. Save. Integrated treatment processes for coalgasifiion wastewater with high concentration of phenol and ammonia.
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WEBNov 28, 2012 · Examples include processes such as SolventRefined Coal processes (SRCI and the improved version, SRCII), the Exxon Donor Solvent (EDS) process, and the HCoal process [8, 94, 99]. A brief review on recent advances in direct coal liquefaction and a list of major direct coal liquefaction processes is given by Shui et al. [ 118 ].
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WEBOct 1, 1984 · Process slurries emanating from reactors generally contain 5 to 10 wt.% of solids. Solid—liquid separation processes must be used to separate the mineral residue and unconverted carbon from liquefied coal. Difficulties in removing those solid components represent a major obstacle to economic production of liquefied coal products.
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WEBThe present research work proposes an optimization procedure using Taguchi method and utility concept with the main objective of maximizing the calorific value of syngas with lower CO 2 yield during coal gasifiion process using thermodynamic equilibrium model based on stoichiometric approach. After validating the model with experimental results, the .
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WEB01 coal, lignite, and peat chars production coal pyrolysis retorting coal gas coal tar toscoal process ceramics equipment high temperature pellets pilot plants carbonaceous materials chemical reactions coal gasifiion decomposition energy sources fluids fossil fuels fuels functional models gases gasifiion organic compounds other organic ...
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WEBMar 8, 2013 · The coal direct chemical looping (CDCL) combustion process using an ironbased oxygen carrier has been developed and demonstrated in a 25kWth subpilot unit. The CDCL subpilot unit is the first chemical looping demonstration unit with a circulating moving bed for the solid fuel conversions. To date, the CDCL subpilot unit at OSU has been .
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WEBOct 29, 2009 · The HCoal process was developed by Hydrocarbon Research Inc. (HRI) and was derived from their HOil process for petroleum resid upgrading. The basis of the process was a novel alytic reactor in which the alyst was ebullated in the liquid phase, similar to the more familiar gasphase fluidized bed processes used in the .
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WEBFeb 15, 2014 · A 50 kg/h autothermal twostage gasifier, consisting of a fluidized bed (FB) pyrolyzer and a downdraft fixedbed gasifier, has been designed and built according to our previous laboratory the experiments, lignite gasifiion was performed in this innovative twostage gasifier to demonstrate the process feasibility for clean fuel gas .
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WEBApr 1, 2024 · Biotoxicity dynamic change and key toxic organics identifiion of coal chemical wastewater along a novel fullscale treatment process. Author links open overlay panel Weiwei Ma 1 ... The process diagram of novel fullscale treatment process for coal chemical wastewater treatment, sampling sites, and the procedure of labscale .
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WEBSome data on scaleup obtained at Hydrocarbon Research, Inc. on the commercialization of the HCoal process are discussed. Development on the process was conducted on benchscale and process development units. The bench units use reactors about in. dia and handle about 25 lbs coal per day. The process development unit (PDU) reactor is 8 1/2 ...
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WEBJan 25, 2022 · The coaltomethanol (CTM) is an important technical route for methanol production. The process suffers from high CO2 emission and low energy efficiency due to the mismatch of H/C (hydrogento ...
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WEBJul 15, 2012 · The article contains sections titled: 1. Introduction Commercial Development Historical Background 2. Indirect Coal Liquefaction Preparation of Synthesis Gas Co...
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WEBNov 10, 2017 · The flowchart of the Phenols Recovery process using mesityl oxide as solvent is shown in Fig. 7. The coalgasifiion wastewater and mesityl oxide are fed into the extractor (T01) from the top and the bottom of T01, respectively. Then the extract is preheated to the bubble point and fed into the solvent recovery column (T02).
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WEBThe HCoal process operations with Kentucky No. 11 coal are similar to those with Illinois No. 6 coal feed. However, due to the physical property differences of the recycle oil, an adjustment in feed composition and/or temperature .
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WEBSep 7, 2023 · The digestion reaction with NaOH lixiviants also causes coal fly ash to become more porous, making it advantageous in the organic acidleaching process at the REEs recovery stage. The utilization of the desilied residue produced from the digestion process in acid leaching effectively increases the overall REEs recovery from % to .
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WEBOct 1, 2013 · For the coal chemical industry, the molar ratio of H 2 /CO and the high heating value for gasifier syngas are two crucial performance indexes due to the great impact on the process design and also ...
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WEBThe HCoal process, developed by Hydrocarbon Research, Inc., is used in this study to produce hydrocarbon liquid from either Illinois No. 6 bituminous or Wyodak subbituminous coal. The primary fuel products include gasoline, turbine fuel, and distillate fuel oil. A substantial amount of LPG is produced only in the Illinois coal case.
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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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