liquefaction process of coal

Coliquefaction of Tunçbilek lignite with algae ...

Coliquefaction of Tunçbilek lignite with algae ...

WEBDec 1, 2022 · Nowadays, to reduce the cost of coal liquefaction and to produce a new liquid fuel alternative to petroleum, it is considered a more convenient method to liquefy coal and biomass together instead of solely coal liquefaction. ... Depending on the liquefaction process conditions, the carbon, hydrogen, sulfur, nitrogen, and oxygen .

Highefficiency coliquefaction of lowrank coal and PAEsrich .

Highefficiency coliquefaction of lowrank coal and PAEsrich .

WEBJan 1, 2024 · The schematic diagram of coliquefaction of lowrank coal and PAEsrich PVC waste in the SCW process is shown in Fig., the raw materials (Inner Mongolia lignite and PAEsrich PVC waste) and water were added to the reactor according to the experimental conditions.

Liquefaction of Hongliulin coal asphaltenes and ...

Liquefaction of Hongliulin coal asphaltenes and ...

WEBFeb 15, 2024 · Based on the multistage liquefaction process, asphaltene was prepared from Hongliulin coal and deeply liquefied with NiCoMo, CoMo, and Fe2 O 3 alysts. The yields of each component were obtained. Ultimate analysis, FTIR and XPS was used to investigate the conversion of oxygenic structure. The results showed that the ability to .

Outline of NEDOL coal liquefaction process development (pilot .

Outline of NEDOL coal liquefaction process development (pilot .

WEBFeb 1, 2000 · Coal liquefaction residue (CLR) is a byproduct from direct coal liquefaction process, usually accounting for 30 wt.% of the feed coal [7, 8]. CLR is considered as a potential carbon resource for ...

(PDF) Analysis of flammability limits for the liquefaction process .

(PDF) Analysis of flammability limits for the liquefaction process .

WEBA novel liquefaction and distillation process has been proposed and designed for the typical oxygenbearing coalbed methane (CBM), in which the impurities of the oxygen and nitrogen components are removed in the distillation column.

Structural characteristics of maceral components in exiniterich coal ...

Structural characteristics of maceral components in exiniterich coal ...

WEBThe X c of coal during the liquefaction process generally increases with temperature and time, but Fig. 3 (a)(c) indies that the X c of three coals at 455 °C is lower compared to that at 440 °C. This suggests that condensation occurs during the coal liquefaction process, leading to the formation of coke.

A process simulation of the NEDOL coal liquefaction process

A process simulation of the NEDOL coal liquefaction process

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, liquefaction section consisted of three reactors, 1 m in diameter, connected in series, and processed 150 tons of coal .

A Preliminary investigation of CO effects on lignite liquefaction process

A Preliminary investigation of CO effects on lignite liquefaction process

WEBJun 1, 2018 · 1. Introduction. Lignite is regarded as an abundant and inexpensive resource accounting for 13% of the coal deposits in China [1].It is a kind of preferred coals for direct liquefaction, due to its high reactivity [2], [3], [4], [5].However, its high oxygen and moisture contents limit its utilization in direct liquefaction, due to a large hydrogen consumption .

Exxon Donor Solvent Coal Liquefaction Process

Exxon Donor Solvent Coal Liquefaction Process

WEBThe slurry is then pumped to reaction pressure, treated with hydrogen and heated in the liquefaction slurry furnace before entering the liquefaction reactors which operate at 840°F and 2000 psig. There the coal is liquefied in the presence of molecular hydrogen and hydrogenated donor sol vent.

The Chevron coal liquefaction process (CCLP)

The Chevron coal liquefaction process (CCLP)

WEBOct 1, 1982 · The basic process, which can be considered 'second generation' relative to other coal liquefaction processes under development today, is called the Chevron Coal Liquefaction Process (CCLP). This process and its variants have been studied in integrated laboratoryscale pilot plants with capacities of — kg (coal) day −1.

Novel Use of Residue From Direct Coal Liquefaction Process

Novel Use of Residue From Direct Coal Liquefaction Process

WEBMar 24, 2009 · Coal liquefaction technology is a process for converting coal to liquid fuels by dissolving coal in an organic hydrogendonor solvent in the presence of hydrogen and a alyst under high ...

Analysis of flammability limits for the liquefaction process of .

Analysis of flammability limits for the liquefaction process of .

WEBSep 1, 2011 · Highlights A novel liquefaction and distillation process is designed for oxygen bearing coalbed methane. Oxygen contained in coalbed methane is removed in distillation process. Flammability limits are analyzed for the whole operation process. We find explosion hazard may exist in distillation tower. Effective measures are proposed to .

Multiobjective optimization of membrane in hybrid cryogenic

Multiobjective optimization of membrane in hybrid cryogenic

WEBSep 27, 2023 · Postcombustion carbon dioxide (CO 2) capture is considered a potential method to mitigate CO 2 emissions from fossil fuels burned in power plants. In recent years, combining two different methods of postcombustion CO 2 capture such as membrane and cryogenic distillation has been explored for availing the advantages of each method. .

Liquefying Coal for Future Energy Needs | GAO

Liquefying Coal for Future Energy Needs | GAO

WEBHighlights. Coal liquefaction, the conversion of coal to a cleanburning, lowsulfurcontent fuel, is a technology that can augment petroleumderived products such as gasoline and boiler fuels and help meet the requirement for large supplies of liquid fuel. Direct liquefaction produces liquids through the interaction of coal and hydrogen at ...

Reaction Engineering of Direct Coal Liquefaction

Reaction Engineering of Direct Coal Liquefaction

WEBOct 29, 2009 · Description: The Solvent Refined Coal liquefaction process referred to as SRCII is a thermal liquefaction process; it is an outgrowth of an earlier Solvent Refined Coal process tested by Gulf Oil in the 1960s [20,21,22,23,24]. The earlier process, known as SRCI, was aimed at boiler fuel production of an ashless lowsulfur solid fuel.

Highefficiency coliquefaction of lowrank coal and PAEsrich .

Highefficiency coliquefaction of lowrank coal and PAEsrich .

WEBJan 1, 2024 · With the extensive use of phthalates (PAEs)rich polyvinyl chloride (PVC) plastic products, the recycling of PAEsrich PVC waste has become a great challenge. Meanwhile, the efficient utilization of lowrank coal is important in China due to the abundant reserves. In this study, a highefficiency coliquefaction treatment of PAEs .

Outline of NEDOL coal liquefaction process development (pilot .

Outline of NEDOL coal liquefaction process development (pilot .

WEBFeb 1, 2000 · The 150t/day NEDOL coal liquefaction pilot plant (PP) has validated the superior technical features with a highly active liquefaction alyst and hydrogen donor solvent. ... was formed to develop energy substituting for oil in 1974 and the NEDOL bituminous coal liquefaction process has been developed as one of the RD projects .

Energy assessment of coalfired steam power plant

Energy assessment of coalfired steam power plant

WEBNov 1, 2019 · In this study, a coalfired power plant followed by an absorption postcombustion CO 2 capture unit and a CO 2 liquefaction unit is simulated; the schematic of Fig. 1 illustrates the block diagram of the subsystems and shows the streams that are between these units. Also, Fig. 2 indied the process flow diagram of the best .

Study on structure and properties of remained solids from liquefaction .

Study on structure and properties of remained solids from liquefaction .

WEBMay 1, 2023 · 1. Introduction. Direct coal liquefaction (DCL) is one of the routes to directly convert coal to oils and chemicals [1], [2], [3].Its core reactions include the generation of radical fragments of a wide range of molecular sizes by cleavage of weak covalent bridge bonds in coal followed by hydrogenation of the radical fragments to form products, such .

Process Study and CO2 Emission Reduction Analysis of Coal Liquefaction ...

Process Study and CO2 Emission Reduction Analysis of Coal Liquefaction ...

WEBSep 20, 2022 · The direct coal liquefaction process. usually produces a coal liquefaction residue (CLR) of about 30%. of its coal feed (Xu et al., 2014), and there is more than 80%. organic matter in the CLR ...

Kinetic evaluation of progress in coal liquefaction in the 1t/d PSU .

Kinetic evaluation of progress in coal liquefaction in the 1t/d PSU .

WEBFeb 1, 2000 · A maximum oil yield in the NEDOL coal liquefaction process was obtained with coal containing 76−78% carbon, while gas and water yields decreased with an increase in the carbon content. On the other . Expand. 3. Save. Additive Effect of Waste Tire on the Hydrogenolysis Reaction of Coal Liquefaction Residue.

Free FullText | Recent Advances in Direct Coal Liquefaction

Free FullText | Recent Advances in Direct Coal Liquefaction

WEBJan 27, 2010 · The growing demand for petroleum, accompanied by the declining petroleum reserves and the concerns over energy security, has intensified the interest in direct coal liquefaction (DCL), particularly in countries such as China which is rich in coal resources, but short of petroleum. In addition to a general introduction on the mechanisms and .

Coal Liquefaction

Coal Liquefaction

WEBJul 15, 2012 · The article contains sections titled: 1. Introduction Commercial Development Historical Background 2. Indirect Coal Liquefaction Preparation of Synthesis Gas Co...

Liquefaction of Victorian Brown Coal

Liquefaction of Victorian Brown Coal

WEBJan 1, 2004 · The standard conditions of BCL process are selected to maximise oil yield and hydrogen efficiency under milder conditions. Kinetic Models for Coal Liquefaction To develop a coal liquefaction process, especially to scaleup the process, it is very important to describe the process by a kinetic model based on the coal .

The alytic hydrodesulfurization performance and mechanism of ...

The alytic hydrodesulfurization performance and mechanism of ...

WEBApr 1, 2022 · The crude coal liquefaction oil was prepared via the coal direct liquefaction process. A long flame coal mined from Naomaohu coal field, Xinjiang province China, was used in this study. The coal particle was primarily pulverized to <200 μm, followed by vacuum drying at 80 °C for 24 h.

Liquefaction of coal by SRC‐II process: Part III: Reactivity of ...

Liquefaction of coal by SRC‐II process: Part III: Reactivity of ...

WEBA general quantitative validation of the new kinetic model for SRCII coal liquefaction (Singh et al., 1981 a) is obtained by very good agreement between model predicted and measured yields. This shows that the new kinetic model provides a reasonable representation of the overall intrinsic process of SRCII coal liquefaction and hence, it .

Catalytic hydrogenation of recycle solvent in a 150t/d pilot .

Catalytic hydrogenation of recycle solvent in a 150t/d pilot .

WEBFeb 1, 2000 · Effect of reaction temperature on hydrotreatment of a recycle solvent in the NEDOL coal liquefaction process was studied from the data obtained by the operation of a 150 t/d pilot of the recycle solvent was carried out under a hydrogen pressure of 100 kg/cm 2 G over Ni–Mo/Al 2 O 3 alyst in a fixed bed reactor. As the .

Pyrolysis characteristics and kinetics of residue from

Pyrolysis characteristics and kinetics of residue from

WEBAug 10, 2014 · This disparity with respect to the distribution is mainly due to the different coal sources and the solid–liquid separation techniques used to recover the residue from the coal liquefaction process [11]. Download : Download highres image (89KB) Download : Download fullsize image; Fig. 1. The distribution of solvent extraction .

Liquefaction of Hongliulin coal asphaltenes and ...

Liquefaction of Hongliulin coal asphaltenes and ...

WEBFeb 15, 2024 · Based on the multistage liquefaction process, asphaltene was prepared from Hongliulin coal and deeply liquefied with NiCoMo, CoMo, and Fe 2 O 3 alysts. The yields of each component were obtained. Ultimate analysis, FTIR and XPS was used to investigate the conversion of oxygenic structure. The results showed that the ability to .

Caking property and coke strength of direct coal liquefaction .

Caking property and coke strength of direct coal liquefaction .

WEBJul 1, 2022 · article{Sun2022CakingPA, title={Caking property and coke strength of direct coal liquefaction residue obtained from mildliquefaction process during coal blending coking}, author={Shuo Sun and Zhihui Chen and Youqing Wu and Sheng Huang and Yonghui Bai and Shifa Wu}, journal={Journal of Analytical and Applied Pyrolysis}, .

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