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Calculation and analysis of sub/supercritical methanol preheating tube for continuous production of biodieselvia supercritical methanol transesterification

Wen CHEN, Weiyong YING, Cunwen WANG, Weiguo WANG, Yuanxin WU, Junfeng ZHANG,

Frontiers in Energy 2009, Volume 3, Issue 4,   Pages 423-431 doi: 10.1007/s11708-009-0075-0

Abstract: Supercritical methanol transesterification for biodiesel has recently been concerned because of its obviousThe tubular reactor is an ideal reactor for continuous preparation of biodiesel via supercritical methanolfor supercritical methanol transesterification is usually 520―600K.;600K, changes of the density, isobaric capacity, viscosity and thermal conductivity of sub/supercriticalthe basis of these thermophysical properties, an integration method is adopted for the design of sub/supercritical

Keywords： sub/supercritical methanol     preheating tube     integration method     biodiesel    

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Simulation analysis of methanol flash distillation circulation process in biodiesel production with supercritical

Zhengjiao TANG, Cunwen WANG, Weiguo WANG, Jia GUO, Yuanxin WU, Jinfang CHEN, Yigang DING

Frontiers in Energy 2011, Volume 5, Issue 1,   Pages 93-97 doi: 10.1007/s11708-010-0028-7

Abstract: High methanol-to-oil ratio is required to obtain a high conversion of oil for the production of biodieselwith supercritical methanol.Recovering the methanol of a stream issuing from a transesterification supercritical reactor by flashThe difference of the recovery percentage of methanol of the above two flash processes is less than 0.5%The process in which the product of transesterification of soybean oil with supercritical methanol is

Keywords： supercritical methanol     biodiesel     recovery     flash distillation    

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Biodiesel production from waste frying oil in sub- and supercritical methanol on a zeolite Y solid acid

Jorge MEDINA-VALTIERRA, Jorge RAMIREZ-ORTIZ

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 4,   Pages 401-407 doi: 10.1007/s11705-013-1354-1

Abstract: In this study biodiesel was produced from WFO in sub- and super-critical methanol on a zeolite Y solidThe procedure was optimized using a design of experiments by varying the methanol to WFO molar ratio,The transesterification of WFO with methanol around its critical temperature combined with a zeolite

Keywords： biodiesel     methanol     critical temperature     waste frying oil     zeolite Y    

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Impacts of methanol fuel on vehicular emissions: A review

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 9, doi: 10.1007/s11783-022-1553-4

Abstract:

● Methanol effectively reduces CO, HC, CO2, PM, and PN

Keywords： Methanol fuel     Vehicular emission     Emission reduction     Cleaner fuel     Gasoline substitute    

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Confinement effects in methanol to olefins catalysed by zeolites: A computational review

German Sastre

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 1,   Pages 76-89 doi: 10.1007/s11705-016-1557-3

Abstract: pore zeolites, containing 8-rings as the largest, are widely employed as catalysts in the process of methanol-to-olefinsThe role of the different alkylating agents, methanol, dimethyl ether (DME), and surface methoxy species

Keywords： small pore zeolites     SAPOs     methanol-to-olefins     hydrocarbon pool mechanism     alkylation of polymethylbenzenes    

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Hydrogen production from methanol through dielectric barrier discharge

Baowei WANG, Xu ZHANG, Haiying BAI, Yijun Lü, Shuanghui HU

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 2,   Pages 209-214 doi: 10.1007/s11705-010-1018-3

Abstract: In this paper, methanol reforming to produce H through dielectric-barrier discharge (DBD) plasma reactionEffects of the power supply parameters, reactor parameters and process conditions on conversion of methanol), discharge gap (3.40 mm), length of reaction zone (90.00 mm), dielectric thickness (1.25 mm), and methanolThe highest conversion of methanol and the yield of H were 82.38% and 27.43%, respectively.

Keywords： methanol     dielectric-barrier discharge     hydrogen     plasma    

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Experimental study on premixed combustion of spherically propagating methanol-air-nitrogen flames

Xiangang WANG, Zhiyuan ZHANG, Zuohua HUANG, Xibin WANG, Haiyan MIAO,

Frontiers in Energy 2010, Volume 4, Issue 2,   Pages 223-233 doi: 10.1007/s11708-010-0016-y

Abstract: propagation and development of surface instability of the spark-ignited spherical premixed flames for methanol-air-nitrogen

Keywords： methanol     spherical flame     propagation characteristics     flame instabilities    

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Mechanism of methanol decomposition on the Pd/WC(0001) surface unveiled by first-principles calculations

Jinhua Zhang, Yuanbin She

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 6,   Pages 1052-1064 doi: 10.1007/s11705-019-1908-y

Abstract: In this study, the decomposition of methanol into the CO and H species on the Pd/tungsten carbide (WCThe results reveal that saturated molecules, i.e., methanol and formaldehyde, adsorb weakly on the PdThus, the most probable methanol decomposition pathway on the Pd/WC(0001) surface is CH OH → CH OH →

Keywords： density functional theory     methanol     direct methanol fuel cells     WC(0001)-supported Pd monolayer     decomposition    

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A review on catalytic & non-catalytic bio-oil upgrading in supercritical fluids

Sainab Omar, Yang Yang, Jiawei Wang

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 1,   Pages 4-17 doi: 10.1007/s11705-020-1933-x

Abstract: summarizes the key published research on the topic of bio-oil upgrading using catalytic and non-catalytic supercriticalhave opted for non-precious metal catalysts such as acidic HZSM-5 which can promote esterification in supercriticalSupercritical methanol, ethanol, and water are most commonly used and demonstrate catalyst like activities

Keywords： bio-oil     upgrading     supercritical     review    

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Polydimethylsiloxane assisted supercritical CO

Weixia Wang, Shuai Zhou, Zhong Xin, Yaoqi Shi, Shicheng Zhao

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 3,   Pages 396-404 doi: 10.1007/s11705-016-1577-z

Abstract: The effect of PDMS viscosity on the foaming behavior of HMSPP was systematically investigated using supercritical

Keywords： high melt strength polypropylene (HMSPP)     polydimethylsiloxane (PDMS)     supercritical CO2     foaming    

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Kinetic study of the methanol to olefin process on a SAPO-34 catalyst

Mehdi SEDIGHI,Kamyar KEYVANLOO

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 3,   Pages 306-311 doi: 10.1007/s11705-014-1440-z

Abstract: In this paper, a new kinetic model for methanol to olefin process over SAPO-34 catalyst was developedkinetic model, the effect of the most important operating conditions such as temperature, pressure and methanolyield of total olefins increase to approximately 35% with decreasing the molar ratio of inlet water to methanol

Keywords： methanol to olefin     SAPO-34     kinetic modeling     elementary step    

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Corrosion mechanisms of candidate structural materials for supercritical water-cooled reactor

Lefu ZHANG, Fawen ZHU, Rui TANG

Frontiers in Energy 2009, Volume 3, Issue 2,   Pages 233-240 doi: 10.1007/s11708-009-0024-y

Abstract: strengthened steel are presently considered to be the candidate structural or fuel-cladding materials for supercriticalthose candidate materials exhibits quite complicated mechanism in high-temperature and high-pressure supercritical

Keywords： supercritical water-cooled reactor     general corrosion     oxide film     corrosion mechanism    

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Development of a supercritical and an ultra-supercritical circulating fluidized bed boiler

Junfu LYU, Hairui YANG, Wen LING, Li NIE, Guangxi YUE, Ruixin LI, Ying CHEN, Shilong WANG

Frontiers in Energy 2019, Volume 13, Issue 1,   Pages 114-119 doi: 10.1007/s11708-017-0512-4

Abstract: The supercritical circulating fluidized bed (CFB) boiler, which combines the advantages of CFB combustionwith low cost emission control and supercritical steam cycle with high efficiency of coal energy, isDifferent from the supercritical pulverized coal boiler that has been developed more than 50 years, thesupercritical CFB boiler is still a new one which requires further investigation.The design theory and key technology for supercritical CFB boiler were proposed.

Keywords： supercritical     circulating fluidized bed boiler     development     demonstration    

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Thermo-economic analysis of a direct supercritical CO electric power generation system using geothermal

Frontiers in Energy 2022, Volume 16, Issue 2,   Pages 246-262 doi: 10.1007/s11708-021-0749-9

Abstract: A comprehensive thermo-economic model combining a geothermal heat mining system and a direct supercritical

Keywords： geothermal heat mining     supercritical CO2     power generation     thermo-economic analysis     optimization    

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Production of renewable fuels by blending bio-oil with alcohols and upgrading under supercritical conditions

Sainab Omar, Suzanne Alsamaq, Yang Yang, Jiawei Wang

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 4,   Pages 702-717 doi: 10.1007/s11705-019-1861-9

Abstract: The work studied a non-catalytic upgrading of fast pyrolysis bio-oil by blending under supercriticalconditions using methanol, ethanol and isopropanol as solvent and hydrogen donor.The GCMS analysis indicated that the supercritical methanol reaction removed the acids in the bio-oilconsequently the pH increased from 2.39 in the crude bio-oil to 4.04 after the supercritical methanolThe ester contents increased by 87.49% after the supercritical methanol reaction indicating ester formation

Keywords： bio-oil     blending     supercritical     upgrading     characterisation    

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Title Author Date Type Operation

Calculation and analysis of sub/supercritical methanol preheating tube for continuous production of biodieselvia supercritical methanol transesterification

Wen CHEN, Weiyong YING, Cunwen WANG, Weiguo WANG, Yuanxin WU, Junfeng ZHANG,

Journal Article

Simulation analysis of methanol flash distillation circulation process in biodiesel production with supercritical

Zhengjiao TANG, Cunwen WANG, Weiguo WANG, Jia GUO, Yuanxin WU, Jinfang CHEN, Yigang DING

Journal Article

Biodiesel production from waste frying oil in sub- and supercritical methanol on a zeolite Y solid acid

Jorge MEDINA-VALTIERRA, Jorge RAMIREZ-ORTIZ

Journal Article

Impacts of methanol fuel on vehicular emissions: A review

Journal Article

Confinement effects in methanol to olefins catalysed by zeolites: A computational review

German Sastre

Journal Article

Hydrogen production from methanol through dielectric barrier discharge

Baowei WANG, Xu ZHANG, Haiying BAI, Yijun Lü, Shuanghui HU

Journal Article

Experimental study on premixed combustion of spherically propagating methanol-air-nitrogen flames

Xiangang WANG, Zhiyuan ZHANG, Zuohua HUANG, Xibin WANG, Haiyan MIAO,

Journal Article

Mechanism of methanol decomposition on the Pd/WC(0001) surface unveiled by first-principles calculations

Jinhua Zhang, Yuanbin She

Journal Article

A review on catalytic & non-catalytic bio-oil upgrading in supercritical fluids

Sainab Omar, Yang Yang, Jiawei Wang

Journal Article

Polydimethylsiloxane assisted supercritical CO

Weixia Wang, Shuai Zhou, Zhong Xin, Yaoqi Shi, Shicheng Zhao

Journal Article

Kinetic study of the methanol to olefin process on a SAPO-34 catalyst

Mehdi SEDIGHI,Kamyar KEYVANLOO

Journal Article

Corrosion mechanisms of candidate structural materials for supercritical water-cooled reactor

Lefu ZHANG, Fawen ZHU, Rui TANG

Journal Article

Development of a supercritical and an ultra-supercritical circulating fluidized bed boiler

Junfu LYU, Hairui YANG, Wen LING, Li NIE, Guangxi YUE, Ruixin LI, Ying CHEN, Shilong WANG

Journal Article

Thermo-economic analysis of a direct supercritical CO electric power generation system using geothermal

Journal Article

Production of renewable fuels by blending bio-oil with alcohols and upgrading under supercritical conditions

Sainab Omar, Suzanne Alsamaq, Yang Yang, Jiawei Wang

Journal Article