
Lignite processing technology

Fuel Processing Technology
2015年10月1日 Mesoporous ACs were successfully prepared from lignite by KOH activation Prepared ACs have high specific surface area and large pore volume Mesoporous ACs 2016年9月23日 To further explore and analyze the influence of various key processes on the environment and economic costs, a lignite drying and compression technology is evaluated Future of lignite resources: a life cycle analysis2019年4月1日 Drying and depolymerization technologies of Zhaotong lignite (ZL) are reviewed Advantages and disadvantages of different drying approaches are presented High yield of Drying and depolymerization technologies of Zhaotong lignite2022年10月3日 This paper presents the experimental results of oxygen/steam gasification of lignite coal char in a fixed bed reactor under atmospheric pressure and at the temperature of Gasification of lignite from Polish coal mine to hydrogenrich

Lignin waste processing into solid, liquid, and gaseous fuels:
2021年4月21日 The common methods adopted for lignin conversion include thermal processing technologies such as catalytic fast pyrolysis, direct hydrotreatment of lignin raw material The drying of lignite generally involves the following processes: (1) The evaporation of surface moisture adhered to lignite particles; (2) heat diffusion from the surface to the interior of lignite Theoretical Analysis and Optimization of Fine Lignite Drying Critical factors were identified for reducing the environmental and economic impacts of lignite drying and compression technology These findings provide useful inputs for both industrial Future of lignite resources: a life cycle analysis PubMed2020年3月1日 With the pressure owing to fossil oil shortages, direct liquefaction is attracting significant attention as a highly efficient and lowcost technique for lignitetofuel conversion In Direct liquefaction techniques on lignite coal: A review
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Extraction of Humic Acids from Lignite and Its
2023年3月24日 Current research focuses on extracting humic acid (HA) compounds from lowrank coals to obtain high valueadded products In this study, HAs with high purity and low heavy metal content were obtained from 2021年3月1日 Gasification is the key technology to realize the clean and efficient utilization of coal Through gasification, coal can be converted into a wide variety of products such as transportation fuels, synthesized natural gas, valueadded chemicals, and hydrogen [1, 2]China has a vast reserve of lignite, which features abundant oxygencontaining functional groups, Fuel Processing Technology2006年9月1日 The lignite HA fraction tested was isolated from a South Moravian (Czech Republic) lignite deposit by a wellknown NaOHextraction procedure and precipitated from its alkaline stock solution at strongly acidic conditions Fuel Processing Technology, 28 (1991), pp 259273 View PDF View article View in Scopus Google Scholar [28] S Kang, B Aspects of structural features in lignite and lignite humic acids2004年6月15日 The EERC is conducting a 3year, twophase consortium project involving both US and Canadian government and industry organizations The overall goal of the project is to develop, test, and demonstrate lowcost mercury control technologies applicable to US and Canadian utilities that burn lignite coal from the Fort Union region, shown in Fig 2Application of sorbents for mercury control for utilities

A ReaxFF molecular dynamics study on the mechanism of
2015年10月1日 Zheng et al 15,16 used the ReaxFF module in Lammps to simulate the pyrolysis of a largescale lignite model composed of 4976 atoms and found that the order of appearance of gas products is H 2 O 2024年3月1日 It is known that there are significant deposits of lignite (brown coal) in Ukraine, particularly in categories A + B + C1 At the same time, certain technical and legal obstacles limit its use as an energy carrier Therefore, new methods of using lignite and processing its products are necessary The latter includes humic acids It was suggested that these acids could be Use of Lignite Processing Products as Additives to Road2015年10月1日 Fuel Processing Technology Volume 138, October 2015, Pages 734742 Research article Lignitederived high surface area mesoporous activated carbons for electrochemical capacitors Author links open overlay panel BaoLin Xing a c, Hui Guo a, It therefore becomes necessary to produce mesoporous ACs using a costeffective process Fuel Processing Technology2015年8月1日 A novel catalyst was prepared by loading nickel on Shenli lignite char via ionexchange The results show that the nickel crystallite size (NCS) and specific surface area (SSA) of the catalyst significantly depended on solution pH and carbonization temperature The catalyst prepared in pH 11 at 650 °C reached the maximum SSA of 2363 m 2 /g and the nickel Preparation of nickelloaded on lignite char for catalytic
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In situ upgrading of Shengli lignite pyrolysis vapors over
2017年6月1日 Many upgrading process such as catalytic cracking and hydrodeoxygenation methods are currently in development [4], [5]Nonetheless, there exist more advantages to catalytic cracking for lignite conversion including (1) it does not require addition of hydrogen and could be operated at the atmospheric pressure, (2) it removes oxygen from pyrolysis oil in the 2019年12月1日 In this work, the initial pyrolysis mechanism of lignite was investigated using ReaxFFMD constant temperature simulations at 1600–3000 K for 250 ps The results show that lignite pyrolysis process begins with the dissociation of the weaker bridge bonds such as C alO and C alC al Moreover, increasing temperature is favorable for the ReaxFFbased molecular dynamics simulation of the initial 2024年3月1日 A plasmachemical method is used to process a mixture of fuel oil and lignite in a system of productivity 1000 kg/h Mild plasmachemical processing is associated with considerable cracking of the organic component Liquid hydrocarbons are produced in ~77% of the theoretical yield By chromatography and mass spectrometry, the group composition of the PlasmaChemical Processing of Fuel Oil with Lignite2019年4月1日 Zhaotong lignite (ZL), a soft lignite from southwest of China, is an abundant coal resource However, it has not been utilized on large scale due to its very high moisture content and low calorific valueDrying and depolymerization technologies of ZL for upgrading or producing valuable gases, valueadded chemicals, and/or liquid fuels have been widely investigated in Drying and depolymerization technologies of Zhaotong lignite

Study on lignite dewatering by vibration mechanical thermal
2015年2月1日 A new dewatering process — vibration mechanical thermal expression (VMTE) process developed from mechanical thermal expression (MTE) process was studied in this paper The enhancement of moisture content reduction of Zhaotong lignite by vibration in VMTE process under different temperatures and pressure was determined Compared to MTE process, the 2016年6月15日 Fuel Processing Technology Volume 147, 15 June 2016, Pages 1825 In this process, the pretreatment involved the combustion flue to dehydrate the lignite, and the moisture content of lignite was reduced by the CMC process When the moisture content dropped to 6%, coke with the highest quality was obtainedEffect of moisture on dehydration and heat transfer characteristics 2015年7月1日 Mesoporous activated carbons (ACs) were successfully prepared from lignite using KOH as activation agent at the temperature above 700 °C The pore structure and surface chemistry of the as Lignitederived high surface area mesoporous activated 2019年8月1日 Carboxylic acids (CAs) are important industrial materials The properties of lignite determine that it has great potential to produce CAs by oxidationIn this work, an environmentally benign catalyst, Fe 2 (SO 4) 3, was used to oxidize lignite by O 2 in acidic aqueous solutions to produce CAs The effects of Fe 2 (SO 4) 3 concentration, H 2 SO 4 concentration, reaction Catalytic O2 oxidation of lignite to carboxylic acids with iron

Use of Lignite Processing Products as Additives to Road
2024年3月1日 Use of Lignite Processing Products as Additives to Road Petroleum Bitumen Serhiy Pyshyev 1,* , Denis Miroshnichenko 2, Taras Chipko 1, Myroslava Donchenko 1, Olena Bogoyavlenska 2, Liudmyla Lysenko 2, Mykhailo Miroshnychenko 2 and Yuriy Prysiazhnyi 1 1 Department of Chemical Technology of Oil and Gas Processing, Lviv Polytechnic National 2008年1月1日 The present study integrates different briquette processing technologies to develop, coalbiomassbinder, coalbiomass (binderless), coalbinder, and carbonized biomassbinder composites(PDF) Development of Fuel Briquettes from BiomassLignite2017年6月1日 Many upgrading process such as catalytic cracking and hydrodeoxygenation methods are currently in development [4], [5] Nonetheless, there exist more advantages to catalytic cracking for lignite conversion including (1) it does not require addition of hydrogen and could be operated at the atmospheric pressure, (2) it removes oxygen from pyrolysis oil in the In situ upgrading of Shengli lignite pyrolysis vapors over 2024年10月12日 Crushing Technologies for Lignite Various crushing technologies are used in Poland to process lignite, each chosen based on the specific properties of the material and the operational needs of the power plants The most common types of crusher used for lignite processing include: 1 Roll CrusherLignite Crushing in Poland: Challenges and Technology
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Mineral matter effects in lignite gasification,Fuel Processing
2002年6月1日 The inorganic constituents in Greek lignite seem to play a controlling role in determining gasification EN Fuel Processing Technology ( IF 72) Pub Date : , DOI: 101016/s03783820(02)000632 2020年3月6日 Abstract Systematic studies on the extraction of germanium compounds from lowgrade coals—lignites—on gasification and combustion and theoretical and experimental studies of the behavior of germanium contained in lignite under various processing conditions have been carried out Optimal conditions for germanium extraction and the manufacture of commercial Germanium Production Technology Based on the 2019年4月24日 The Inner Mongolia lignite was selected as the feedstock and dewatered by hydrothermal, fixedbed, and microwave upgrading techniques The physicochemical structures of the raw coal and dewatered coal samples were determined by N2 adsorption, Fourier transform infrared, and chemical titration methods The combustion behavior of coals was investigated Evolution of Physical and Chemical Structures in Lignite 2018年7月27日 Being a basic process technology operation, drying of the lignite coal upgrades the quality of the lignite coal as well An energy efficient drying method improves the energy balance of the overall process As a modern method for processing and drying of the lignite coal, WTA technology is used and adapted to all of the above processesWTA technology for drying of lignite coal – IspatGuru
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Effect of hydrothermal treatment on the carbon structure of
Understanding the structural properties of lignite during hydrothermal treatment would aid in predicting the subsequent behavior of coal during the pyrolysis, liquefaction, and gasification processes Here, hydrothermal treatment of Inner Mongolia lignite (IM) was carried out in a lab autoclave The distribution of carbon in the lignite was monitored via solid 13C nuclear 2017年6月15日 Fei et al [8] reported the hydrothermal dewatering of a Victorian lignite as a function of temperature (200–300 °C), and their results indicated that only when the hydrothermally processing temperature was elevated up to 250–300 °C were the content of equilibrium moisture and the content of acidic functional groups in lignite Hydrothermal treatment of the blend of lignite and rapid 2017年12月10日 Performance evaluation of optical sorting in mineral processing – A case study with quartz, magnesite, hematite, lignite, copper and gold ores The development of optical sorters thrived simultaneously with the improvement in the technology Optical sorting allows the separation of granular particles from each other due to differences in Performance evaluation of optical sorting in mineral processing 2016年6月15日 @article{Liang2016ARM, title={A ReaxFF molecular dynamics study on the mechanism of organic sulfur transformation in the hydropyrolysis process of lignite}, author={Yinghua Liang and Feng Wang and Hang Zhang and Jieping Wang and YingYing Li and GuangYue Li}, journal={Fuel Processing Technology}, year={2016}, volume={147}, pages={3240}, url A ReaxFF molecular dynamics study on the mechanism of

Drying and depolymerization technologies of Zhaotong lignite
2019年4月1日 Abstract Zhaotong lignite (ZL), a soft lignite from southwest of China, is an abundant coal resource However, it has not been utilized on large scale due to its very high moisture content and low calorific value Drying and depolymerization technologies of 2016年6月15日 As the lowestrank coal, lignite is abundant in many regions of the world It is mainly used as thermal coal in electric power generation [1]In the combustion process, lignite would leave vast piles of SO 2 gas, which is one of the most important gases leading to acid rain [2]Furthermore, inhaling SO 2 is also associated with increased respiratory symptoms and Fuel Processing TechnologyFuel Processing Technology Open access 132 CiteScore 72 Impact Factor Articles Issues About Publish Menu Articles Issues Latest issue; select article Influences of exchangeable metallic species on solvent extraction of Xiaolongtan Fuel Processing Technology Vol 138, Pages 1826 (October 2021年3月1日 Gasification is the key technology to realize the clean and efficient utilization of coal Through gasification, coal can be converted into a wide variety of products such as transportation fuels, synthesized natural gas, valueadded chemicals, and hydrogen [1, 2]China has a vast reserve of lignite, which features abundant oxygencontaining functional groups, Fuel Processing Technology
.jpg)
Aspects of structural features in lignite and lignite humic acids
2006年9月1日 The lignite HA fraction tested was isolated from a South Moravian (Czech Republic) lignite deposit by a wellknown NaOHextraction procedure and precipitated from its alkaline stock solution at strongly acidic conditions Fuel Processing Technology, 28 (1991), pp 259273 View PDF View article View in Scopus Google Scholar [28] S Kang, B 2004年6月15日 The EERC is conducting a 3year, twophase consortium project involving both US and Canadian government and industry organizations The overall goal of the project is to develop, test, and demonstrate lowcost mercury control technologies applicable to US and Canadian utilities that burn lignite coal from the Fort Union region, shown in Fig 2Application of sorbents for mercury control for utilities 2015年10月1日 Zheng et al 15,16 used the ReaxFF module in Lammps to simulate the pyrolysis of a largescale lignite model composed of 4976 atoms and found that the order of appearance of gas products is H 2 O A ReaxFF molecular dynamics study on the mechanism of 2024年3月1日 It is known that there are significant deposits of lignite (brown coal) in Ukraine, particularly in categories A + B + C1 At the same time, certain technical and legal obstacles limit its use as an energy carrier Therefore, new methods of using lignite and processing its products are necessary The latter includes humic acids It was suggested that these acids could be Use of Lignite Processing Products as Additives to Road
.jpg)
Fuel Processing Technology
2015年10月1日 Fuel Processing Technology Volume 138, October 2015, Pages 734742 Research article Lignitederived high surface area mesoporous activated carbons for electrochemical capacitors Author links open overlay panel BaoLin Xing a c, Hui Guo a, It therefore becomes necessary to produce mesoporous ACs using a costeffective process 2015年8月1日 A novel catalyst was prepared by loading nickel on Shenli lignite char via ionexchange The results show that the nickel crystallite size (NCS) and specific surface area (SSA) of the catalyst significantly depended on solution pH and carbonization temperature The catalyst prepared in pH 11 at 650 °C reached the maximum SSA of 2363 m 2 /g and the nickel Preparation of nickelloaded on lignite char for catalytic 2017年6月1日 Many upgrading process such as catalytic cracking and hydrodeoxygenation methods are currently in development [4], [5]Nonetheless, there exist more advantages to catalytic cracking for lignite conversion including (1) it does not require addition of hydrogen and could be operated at the atmospheric pressure, (2) it removes oxygen from pyrolysis oil in the In situ upgrading of Shengli lignite pyrolysis vapors over 2019年12月1日 In this work, the initial pyrolysis mechanism of lignite was investigated using ReaxFFMD constant temperature simulations at 1600–3000 K for 250 ps The results show that lignite pyrolysis process begins with the dissociation of the weaker bridge bonds such as C alO and C alC al Moreover, increasing temperature is favorable for the ReaxFFbased molecular dynamics simulation of the initial

PlasmaChemical Processing of Fuel Oil with Lignite
2024年3月1日 A plasmachemical method is used to process a mixture of fuel oil and lignite in a system of productivity 1000 kg/h Mild plasmachemical processing is associated with considerable cracking of the organic component Liquid hydrocarbons are produced in ~77% of the theoretical yield By chromatography and mass spectrometry, the group composition of the