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Sensitivity analysis of a methanol and power polygeneration system fueled with coke oven gas and coal gas

Guoqiang ZHANG, Lin GAO, Hongguang JIN, Rumou LIN, Sheng LI

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 4,   Pages 491-497 doi: 10.1007/s11705-010-0511-z

Abstract: composition, conversation rate and performance.of syngas and the conversion rate of chemical subsystem is obtained and discussed.It is obtained from the result that the proper conversion rate of the chemical subsystem according toAnd the syngas composition affects the optimal conversion rate of the chemical subsystem, the optimalof syngas to power and chemical product according to the syngas composition, is a promising method for

Keywords： gas     polygeneration of power and methanol     sensitivity analysis     the relation among energy utilization     syngascomposition and chemical conversion rate    

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Syngas composition study

Zhe WANG , Jinning YANG , Zheng LI , Yong XIANG ,

Frontiers in Energy 2009, Volume 3, Issue 3,   Pages 369-372 doi: 10.1007/s11708-009-0044-7

Abstract: The syngas composition characteristic was investigated in the real slurry-feed gasifier using a detailedThe results show that the time for syngas to reach equilibrium is much shorter than the residence time

Keywords： entrained-flow     gasifier     syngas    

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Boosting the direct conversion of NHHCO electrolyte to syngas on Ag/Zn zeolitic imidazolate framework

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 9,   Pages 1196-1207 doi: 10.1007/s11705-022-2289-1

Abstract: The electrochemical reduction of NH4HCO3 to syngas can bypass the high energy consumptionA zeolitic imidazolate framework-8 precursor was introduced with different Ag contents via colloid chemicalframework derived nitrogen carbon catalysts, which were used for the first time for boosting the direct conversionof NH4HCO3 electrolyte to syngas.

Keywords： zeolitic imidazolate framework     CO2 electroreduction     ammonium bicarbonate electrolyte     syngas    

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Study for entrained-flow gasifier modeling and measurement

Zhe WANG, Zheng LI, Fen HE

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 4,   Pages 400-403 doi: 10.1007/s11705-010-0510-0

Abstract: The syngas composition change during the measurement process was analyzed using a detailed gas phaseBased on the results, suggestions were proposed for syngas concentration measurement and temperature

Keywords： entrained-flow gasifier     syngas composition    

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A New Adaptive Frame Rate Upconversion Algorithm for Scan Rate Conversion and Its FPGA Implementation

Wu Yong,Zhang Guanglie,Zheng Nanning,Zhang Xia

Strategic Study of CAE 2001, Volume 3, Issue 4,   Pages 56-62

Abstract:

In this paper, a new adaptive frame rate upconversion algorithm is presented, and its rapid implementationtable that corresponds to the adjustable parameter and employing FPGA, the algorithm for scan format conversion

Keywords： scan format conversion     frame rate up-conversion     block-matching     motion compensation    

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Long-term trends of fine particulate matter and chemical composition in the Pearl River Delta Economic

Xuemei WANG,Weihua CHEN,Duohong CHEN,Zhiyong WU,Qi Fan

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 1,   Pages 53-62 doi: 10.1007/s11783-014-0728-z

Abstract: Understanding the trends in PM levels is essential for formulating clean air plans. This paper analyzes PM data from various published sources for the years 2000 to 2010 in the Pearl River Delta Economic Zone (PRDEZ). The long-term variation in PM mass concentration is analyzed. Results show that PM , organic carbon (OC), elemental carbon (EC), and show a similar trend, increasing before 2005 and then decreasing slightly. The annual average PM concentration ranges from 49.1 μg·m in 2000 to 64.3 μg·m in 2010, with a peak of 84.1 μg·m in 2004. None of these 11 years meets the new National Ambient Air Quality standard (NAAQS) for PM (35 μg·m ). Overall average concentrations of OC, EC, and are 13.0, 6.5, and 11.8 μg·m , respectively. and respectively have concentrations of 1.5 μg·m and 2.9 μg·m in 2000 and 6.4 μg·m and 5.3 μg·m in 2010, with a statistically significant average annual trend of+ 0.2 μg·m ·yr and+ 0.1 μg·m ·yr . In certain geographic regions, OC and EC contribute most of the PM , while in other regions secondary water-soluble ions are more important. In general, OC and are the dominant components of PM , contributing 20.6% and 18.6%, respectively. These results provide, for the first time, a better understanding of the long-term PM characteristics and trends, on a species-by-species basis, in the PRDEZ. The results indicate that PM abatement needs to prioritize secondary species.

Keywords： long-term trends     fine particulate matter     chemical components     Pearl River Delta Economic Zone (PRDEZ)    

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Photocatalytic syngas synthesis from CO

Ling Tan, Kipkorir Peter, Jing Ren, Baoyang Du, Xiaojie Hao, Yufei Zhao, Yu-Fei Song

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 1,   Pages 99-108 doi: 10.1007/s11705-020-1947-4

Abstract: effectively reduce CO under visible light ( >400 nm), and simultaneously precise control of the products syngasFurthermore, compared with LDH, Ce-0.15 also drove photocatalytic CO to syngas under 600 nm irradiationIt implied that an optimum amount of CeO modifying LDH promoted the photoreduction of CO to syngas.photo-response ability and charge injection efficiency of LDH-based photocatalysts in the synthesis of syngas

Keywords： visible light catalysis     CO2 conversion     layered double hydroxide     rare earth elements    

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A mini review on chemical fixation of CO 2 : Absorption and catalytic conversion into cyclic carbonates

Weili DAI, Chaktong AU, Shenglian LUO, Shuangfeng YIN,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 2,   Pages 163-171 doi: 10.1007/s11705-009-0235-0

Abstract: In this article, we present our research results on chemical fixation of CO using organobismuth compounds

Keywords： SBA-15     CO cycloaddition     Al-SBA-15 immobilized     CO     dissociation    

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Modification of the activated sludge model for chemical dosage

Shuai MA,Siyu ZENG,Xin DONG,Jining CHEN,Gustaf OLSSON

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 4,   Pages 694-701 doi: 10.1007/s11783-014-0732-3

Abstract: that 1) both in low and high mole concentrations, Fe addition results in a higher phosphorus removal ratethan Al ; 2) the sludge settling velocity will increase due to the metal addition; 3) the respiration ratesludge is decreased more by the dosage of Al than Fe ; 4) the inhibition of Al on the nitrification rate

Keywords： chemical precipitation     benchmark simulation model     phosphorus removal     respiratory rate     sludge settling    

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Online single particle analysis of chemical composition and mixing state of crop straw burning particles

Juntao HUO,Xiaohui LU,Xinning WANG,Hong CHEN,Xingnan YE,Song Gao,Deborah S. Gross,Jianmin CHEN,Xin YANG

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 2,   Pages 244-252 doi: 10.1007/s11783-015-0768-z

Abstract: The chemical composition and mixing state of the fresh SB particles were investigated by an Aerosol Time-of-FlightPhysical and chemical changes of the SB particles immediately after the emission were analyzed with highly

Keywords： crop straw burning particles     mixing state     aging process     ATOFMS     ion markers    

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Chemical composition and formation mechanisms in the cathode-electrolyte interface layer of lithium manganese

Sahithya REDDIVARI, Christian LASTOSKIE, Ruofei WU, Junliang ZHANG

Frontiers in Energy 2017, Volume 11, Issue 3,   Pages 365-373 doi: 10.1007/s11708-017-0500-8

Abstract: Lithium manganese oxide (LiMn O ) is a principal cathode material for high power and high energy density electrochemical storage on account of its low cost, non-toxicity, and ease of preparation relative to other cathode materials. However, there are well-documented problems with capacity fade of lithium ion batteries containing LiMn O . Experimental observations indicate that the manganese content of the electrolyte increases as an electrochemical cell containing LiMn O ages, suggesting that active material loss by dissolution of divalent manganese from the LiMn O surface is the primary reason for reduced cell life in LiMn O batteries. To improve the retention of manganese in the active material, it is key to understand the reactions that occur at the cathode surface. Although a thin layer of electrolyte decomposition products is known to form at the cathode surface, the speciation and reaction mechanisms of Mn in this interface layer are not yet well understood. To bridge this knowledge gap, reactive force field (ReaxFF) based molecular dynamics was applied to investigate the reactions occurring at the LiMn O cathode surface and the mechanisms that lead to manganese dissolution. The ReaxFFMD simulations reveal that the cathode-electrolyte interface layer is composed of oxidation products of electrolyte solvent molecules including aldehydes, esters, alcohols, polycarbonates, and organic radicals. The oxidation reaction pathways for the electrolyte solvent molecules involve the formation of surface hydroxyl species that react with exposed manganese atoms on the cathode surface. The presence of hydrogen fluoride (HF) induces formation of inorganic metal fluorides and surface hydroxyl species. Reaction products predicted by ReaxFF-based MD are in agreement with experimentally identified cathode-electrolyte interface compounds. An overall cathode-electrolyte interface reaction scheme is proposed based on the molecular simulation results.

Keywords： lithium manganese oxide batteries     reactive force field (ReaxFF)     cathode-electrolyte interface layer     molecular dynamics    

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New Insight into the Development of Oxygen Carrier Materials for Chemical Looping Systems Review

Zhuo Cheng, Lang Qin, Jonathan A. Fan, Liang-Shih Fan

Engineering 2018, Volume 4, Issue 3,   Pages 343-351 doi: 10.1016/j.eng.2018.05.002

Abstract:

Chemical looping combustion (CLC) and chemical looping reforming (CLR) are innovative technologiesfor clean and efficient hydrocarbon conversion into power, fuels, and chemicals through cyclic redoxMetal oxide materials play an essential role in the chemical looping redox processes.During reduction, the oxygen carriers donate the required amount of oxygen ions for hydrocarbon conversiondiscusses recent advances in the development of oxygen carrier materials and the mechanisms of hydrocarbon conversion

Keywords： Chemical looping     Oxygen carrier     Hydrocarbon conversion     Ionic diffusion     Mechanism    

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Experimental and kinetic study on laminar flame speeds of ammonia/syngas/air at a high temperature and

Frontiers in Energy 2022, Volume 16, Issue 2,   Pages 263-276 doi: 10.1007/s11708-021-0791-7

Abstract: The laminar flame speeds of ammonia mixed with syngas at a high pressure, temperature, and differentsyngas ratios were measured.The data obtained were fitted at different pressures, temperatures, syngas ratios, and equivalence ratios

Keywords： ammonia mixed with syngas     laminar flame speed     kinetic model     sensitivity analysis     pathway analysis    

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Preliminary study of trace element emissions and control during coal combustion

ZHANG Junying, ZHAO Yongchun, DING Feng, ZENG Hancai, ZHENG Chuguang

Frontiers in Energy 2007, Volume 1, Issue 3,   Pages 273-279 doi: 10.1007/s11708-007-0038-2

Abstract: The chemical composition and trace element contents of ash and particulate matter (PM) were determinedX-ray diffraction spectrometry (XRD) was used to determine the mineral composition of production during

Keywords： Pingdingshan     occurrence     plasma-atomic emission     chemical composition     Several typical    

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Photothermal materials for efficient solar powered steam generation

Fenghua Liu, Yijian Lai, Binyuan Zhao, Robert Bradley, Weiping Wu

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 4,   Pages 636-653 doi: 10.1007/s11705-019-1824-1

Abstract: Solar powered steam generation is an emerging area in the field of energy harvest and sustainable technologies. The nano-structured photothermal materials are able to harvest energy from the full solar spectrum and convert it to heat with high efficiency. Moreover, the materials and structures for heat management as well as the mass transportation are also brought to the forefront. Several groups have reported their materials and structures as solutions for high performance devices, a few creatively coupled other physical fields with solar energy to achieve even better results. This paper provides a systematic review on the recent developments in photothermal nanomaterial discovery, material selection, structural design and mass/heat management, as well as their applications in seawater desalination and fresh water production from waste water with free solar energy. It also discusses current technical challenges and likely future developments. This article will help to stimulate novel ideas and new designs for the photothermal materials, towards efficient, low cost practical solar-driven clean water production.

Keywords： solar stream generation     plasmonics     porous carbon     photothermal materials     solar energy conversion efficiency     water vapor generation rate    

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Title Author Date Type Operation

Sensitivity analysis of a methanol and power polygeneration system fueled with coke oven gas and coal gas

Guoqiang ZHANG, Lin GAO, Hongguang JIN, Rumou LIN, Sheng LI

Journal Article

Syngas composition study

Zhe WANG , Jinning YANG , Zheng LI , Yong XIANG ,

Journal Article

Boosting the direct conversion of NHHCO electrolyte to syngas on Ag/Zn zeolitic imidazolate framework

Journal Article

Study for entrained-flow gasifier modeling and measurement

Zhe WANG, Zheng LI, Fen HE

Journal Article

A New Adaptive Frame Rate Upconversion Algorithm for Scan Rate Conversion and Its FPGA Implementation

Wu Yong,Zhang Guanglie,Zheng Nanning,Zhang Xia

Journal Article

Long-term trends of fine particulate matter and chemical composition in the Pearl River Delta Economic

Xuemei WANG,Weihua CHEN,Duohong CHEN,Zhiyong WU,Qi Fan

Journal Article

Photocatalytic syngas synthesis from CO

Ling Tan, Kipkorir Peter, Jing Ren, Baoyang Du, Xiaojie Hao, Yufei Zhao, Yu-Fei Song

Journal Article

A mini review on chemical fixation of CO 2 : Absorption and catalytic conversion into cyclic carbonates

Weili DAI, Chaktong AU, Shenglian LUO, Shuangfeng YIN,

Journal Article

Modification of the activated sludge model for chemical dosage

Shuai MA,Siyu ZENG,Xin DONG,Jining CHEN,Gustaf OLSSON

Journal Article

Online single particle analysis of chemical composition and mixing state of crop straw burning particles

Juntao HUO,Xiaohui LU,Xinning WANG,Hong CHEN,Xingnan YE,Song Gao,Deborah S. Gross,Jianmin CHEN,Xin YANG

Journal Article

Chemical composition and formation mechanisms in the cathode-electrolyte interface layer of lithium manganese

Sahithya REDDIVARI, Christian LASTOSKIE, Ruofei WU, Junliang ZHANG

Journal Article

New Insight into the Development of Oxygen Carrier Materials for Chemical Looping Systems

Zhuo Cheng, Lang Qin, Jonathan A. Fan, Liang-Shih Fan

Journal Article

Experimental and kinetic study on laminar flame speeds of ammonia/syngas/air at a high temperature and

Journal Article

Preliminary study of trace element emissions and control during coal combustion

ZHANG Junying, ZHAO Yongchun, DING Feng, ZENG Hancai, ZHENG Chuguang

Journal Article

Photothermal materials for efficient solar powered steam generation

Fenghua Liu, Yijian Lai, Binyuan Zhao, Robert Bradley, Weiping Wu

Journal Article