Fuel Processing Technology最新文献

Co-pyrolysis of coal-derived sludge and low-rank coal: Thermal behaviour and char yield prediction

IF 7.2 2区工程技术

Fuel Processing Technology Pub Date : 2024-11-29 DOI: 10.1016/j.fuproc.2024.108165

Tianli Zhang , Chenxu Zhang , Hai Ren , Zhong Huang , Jun Feng , Na Liu , Rui Li , Yulong Wu

{"title":"Co-pyrolysis of coal-derived sludge and low-rank coal: Thermal behaviour and char yield prediction","authors":"Tianli Zhang , Chenxu Zhang , Hai Ren , Zhong Huang , Jun Feng , Na Liu , Rui Li , Yulong Wu","doi":"10.1016/j.fuproc.2024.108165","DOIUrl":"10.1016/j.fuproc.2024.108165","url":null,"abstract":"<div><div>Coal-derived sludge, a solid waste produced by the coal industry, offers potential opportunities for resource recovery due to its high organic matter. However, its products face challenges related to low utilization efficiency and economic value. Effective and clean treatment of coal-derived sludge is essential for sustainable development. Herein, we studied the co-pyrolysis treatment of coal-derived sludge and low-rank coal at different temperatures (500 °C−900 °C) and pretreatment methods (mechanical mixing and hydrothermal co-treatment). The co-pyrolysis of sludge and coal could increase the pyrolysis char yield and H<sub>2</sub> yield, as well as reduce CO<sub>2</sub> emissions. The hydrothermal co-treatment significantly improved the cleanliness of the co-pyrolysis treatment. Then we conducted a comprehensive analysis of the properties of the pyrolysis char using different characterization techniques. In order to better evaluate the distribution of co-pyrolysis product yield, six machine learning models were developed to predice co-pyrolysis char yield. The best model-predicted values showed excellent predictive performance when compared to the experimental values at high pyrolysis temperatures (≥700 °C). This study provided a new perspective on the resource utilization of coal-derived sludge and low-rank coal.</div></div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"267 ","pages":"Article 108165"},"PeriodicalIF":7.2,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142747667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Transformation of Mg-bearing minerals and its effect on slagging during the high-alkali coal combustion

IF 7.2 2区工程技术

Fuel Processing Technology Pub Date : 2024-11-29 DOI: 10.1016/j.fuproc.2024.108166

Bowen Chen, Zhuo Xiong, Yongchun Zhao, Junying Zhang

{"title":"Transformation of Mg-bearing minerals and its effect on slagging during the high-alkali coal combustion","authors":"Bowen Chen, Zhuo Xiong, Yongchun Zhao, Junying Zhang","doi":"10.1016/j.fuproc.2024.108166","DOIUrl":"10.1016/j.fuproc.2024.108166","url":null,"abstract":"<div><div>To better understand the mineralogical, release-transformation patterns and ash deposition of Mg-bearing minerals, Wucaiwan Coal (WCW), Meihuajing Coal (MHJ), and slag of water wall from a power plant were collected and high-temperature ash transformation experiments were conducted. X-ray fluorescence (XRF), X-ray diffractometer (XRD), scanning electron microscope coupled with energy dispersive spectrometer (SEM-EDS), and simultaneous thermogravimetry and differential scanning calorimetry (TG-DSC) were used to analyze the mineralogy, chemical composition, and characteristics. The results show that the Mg-bearing minerals in high-alkali coal and ash include dolomite, chlorite, forsterite, melilite, akermanite, diopside, bredigite, pyroxene, periclase, spinel, and magnesioferrite. During combustion, the release of Mg is affected by its mode of occurrence. Mg-bearing minerals gradually transform into thermally stable minerals, including spinel, periclase, and pyroxene, with the transformation pathway being dolomite → Mg-bearing silicate (diopside, akermanite, bredigite) → pyroxene/spinel/periclase. Moreover, Ca has a competitive and synergistic effect on the transformation of Mg-bearing minerals, which depends on the relative content of Si and Al in ash. Spinel is the primary Mg-bearing mineral in high-temperature ash, and Fe may substitute for both Mg and Al. In coal combustion, the formation of Mg-Al-Fe and Mg-Al-Fe-Si-Ca eutectic systems from Mg-bearing minerals causes slagging on the water wall and worsens water wall corrosion.</div></div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"267 ","pages":"Article 108166"},"PeriodicalIF":7.2,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142747669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Role of secondary char on the fuel properties and pyrolysis behaviors of hydrochars: Effect of temperature and liquid-solid ratio

IF 7.2 2区工程技术

Fuel Processing Technology Pub Date : 2024-11-29 DOI: 10.1016/j.fuproc.2024.108167

Hongyue Fu , Fang Wang , Zhenfei Liu , Xiaoning Duan , Lihong Wang , Weiming Yi , Deli Zhang

{"title":"Role of secondary char on the fuel properties and pyrolysis behaviors of hydrochars: Effect of temperature and liquid-solid ratio","authors":"Hongyue Fu , Fang Wang , Zhenfei Liu , Xiaoning Duan , Lihong Wang , Weiming Yi , Deli Zhang","doi":"10.1016/j.fuproc.2024.108167","DOIUrl":"10.1016/j.fuproc.2024.108167","url":null,"abstract":"<div><div>Hydrothermal carbonization (HTC) is widely recognized as a promising approach for enhancing the fuel properties of agricultural waste. This study investigated the HTC characteristics of corn stalks, focusing on the effect of secondary char (SC) on the fuel properties and pyrolysis behaviors of hydrochars at different temperature and liquid-solid ratio (LSR). Results showed that lower LSR increased the carbon content and higher heating value of hydrochars. Higher temperature strengthened the effect of LSR. At 240 °C, hydrochar yield decreased from 58.56 % to 45.59 % as the LSR increased. The higher LSR enhanced hydrolysis and promoted the transfer of organic components to aqueous phase, thereby facilitating SC formation with a content as high as 12.10 %. The increase in SC was accompanied by larger carbon microspheres and greater deposition coverage, resulting in reduced specific surface area and elevated oxygen-containing functional groups. The covering of SC strengthened the pyrolysis-like reaction of primary char (PC) during HTC (limited by contact with water). These changes influenced subsequent pyrolysis behavior, with PC tending to produce phenols at low LSR but aromatic hydrocarbons at high LSR. This work could enhance the understanding of SC and provide a practical approach combining HTC and extraction to regulate bio-oil preparation by pyrolysis.</div></div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"267 ","pages":"Article 108167"},"PeriodicalIF":7.2,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142747670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hydrogen production by the water-gas shift reaction: A comprehensive review on catalysts, kinetics, and reaction mechanism

IF 7.2 2区工程技术

Fuel Processing Technology Pub Date : 2024-11-28 DOI: 10.1016/j.fuproc.2024.108163

Leila Dehimi , Oualid Alioui , Yacine Benguerba , Krishna Kumar Yadav , Javed Khan Bhutto , Ahmed M. Fallatah , Tanuj Shukla , Maha Awjan Alreshidi , Marco Balsamo , Michael Badawi , Alessandro Erto

{"title":"Hydrogen production by the water-gas shift reaction: A comprehensive review on catalysts, kinetics, and reaction mechanism","authors":"Leila Dehimi , Oualid Alioui , Yacine Benguerba , Krishna Kumar Yadav , Javed Khan Bhutto , Ahmed M. Fallatah , Tanuj Shukla , Maha Awjan Alreshidi , Marco Balsamo , Michael Badawi , Alessandro Erto","doi":"10.1016/j.fuproc.2024.108163","DOIUrl":"10.1016/j.fuproc.2024.108163","url":null,"abstract":"<div><div>The global push towards a hydrogen economy fuels hydrogen production from various sources. A crucial step in enriching hydrogen and reducing CO in syngas derived from carbon-based hydrogen production is the water-gas shift reaction (WGSR). Given the equilibrium-limited nature of WGSR, low temperatures are necessary to reduce carbon monoxide concentrations to the desired level. Traditionally, iron‑chromium (Fe/Cr) and copper‑zinc (Cu/Zn) catalysts have been widely used at high and low temperatures, respectively. Numerous studies have focused on developing optimal WGS catalysts with the desired characteristics and efficiency. This review extensively discusses various catalysts for different stages of WGSR, including low, medium, high-temperature, and sour WGS catalysts. However, understanding the contrast between the redox and associative mechanisms and the nature of intermediates in the WGS pathway remains unclear. A detailed study of the WGSR pathway is imperative to develop highly active and stable catalysts. Various experimental kinetic values and models have also been reported to elucidate the WGSR mechanism at different temperatures. The primary deactivation sources of WGS catalysts have been discussed to highlight recent advances to improve catalyst performance. The contribution of computational methods such as Density Functional Theory (DFT) to developing WGS catalysts is also explored. Furthermore, the review addresses the challenges encountered in the WGSR, and recommendations and conclusions are drawn to guide future research efforts.</div></div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"267 ","pages":"Article 108163"},"PeriodicalIF":7.2,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142747668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Data-driven analysis in the selective oligomerization of long-chain linear alpha olefin on zeolite catalysts: A machine learning-based parameter study 沸石催化剂上长链线性α-烯烃选择性低聚过程中的数据驱动分析：基于机器学习的参数研究

IF 7.2 2区工程技术

Fuel Processing Technology Pub Date : 2024-11-27 DOI: 10.1016/j.fuproc.2024.108164

Sung Woo Lee , Marcel Jonathan Hidajat , Seung Hyeok Cha , Gwang-Nam Yun , Dong Won Hwang

{"title":"Data-driven analysis in the selective oligomerization of long-chain linear alpha olefin on zeolite catalysts: A machine learning-based parameter study","authors":"Sung Woo Lee , Marcel Jonathan Hidajat , Seung Hyeok Cha , Gwang-Nam Yun , Dong Won Hwang","doi":"10.1016/j.fuproc.2024.108164","DOIUrl":"10.1016/j.fuproc.2024.108164","url":null,"abstract":"<div><div>In this study, the oligomerization of 1-octene was investigated using various zeolites through both experimental and machine learning (ML) approaches. The structural characteristics of the zeolites and experimental conditions were used as input parameters to analyze the feature importance of each key factor on the oligomerization of 1-octene. By quantifying these influences, the reaction mechanism was elucidated, and a methodology for maximizing the oligomerization reaction was developed. The ML methods employed in this study were SHapley Additive exPlanations (SHAP) and Sure Independence Screening and Sparsifying Operator (SISSO). While the SHAP method is a well-validated conventional approach, it has limitations due to its high data requirements. Therefore, the SISSO method was applied, as it requires fewer data points and offers a transparent computational process. SISSO provided results in the form of human-interpretable equations, allowing for an analysis of these equations to deepen insights into the reaction mechanism.</div></div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"267 ","pages":"Article 108164"},"PeriodicalIF":7.2,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142723855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microstructure modulation of hard carbon derived from long-flame coal to improve electrochemical sodium storage performances 调节长焰煤硬碳的微观结构以改善电化学储钠性能

IF 7.2 2区工程技术

Fuel Processing Technology Pub Date : 2024-11-27 DOI: 10.1016/j.fuproc.2024.108159

Hai-Tao Zeng , Wei-Wei Kang , Bao-Lin Xing , Guang-Xu Huang , Qiang Li , Han Hu , Fang-Le Su , Jian-Bo Jia , Chuan-Xiang Zhang

{"title":"Microstructure modulation of hard carbon derived from long-flame coal to improve electrochemical sodium storage performances","authors":"Hai-Tao Zeng , Wei-Wei Kang , Bao-Lin Xing , Guang-Xu Huang , Qiang Li , Han Hu , Fang-Le Su , Jian-Bo Jia , Chuan-Xiang Zhang","doi":"10.1016/j.fuproc.2024.108159","DOIUrl":"10.1016/j.fuproc.2024.108159","url":null,"abstract":"<div><div>Widely sourced precursors for hard carbon with high performances are still a major challenge for industrializing sodium-ion batteries. Herein, long-flame coal was adopted as the precursors to prepare hard carbon by carbonization at different temperatures, and the influences of carbonization temperatures on the microstructure together with electrochemical properties of hard carbon were systematically investigated. With elevating carbonization temperature, carbon layer spacing, defect concentration and C <strong>−</strong> O, C<img>O functional groups of hard carbon all gradually decrease. The hard carbon prepared at 1500 °C (BHC-1500) demonstrates 38 % of the pseudo-graphite carbon with an average carbon layer spacing of 0.360 nm, a specific surface area of 31.2 m<sup>2</sup>/g and appropriate defect concentration (I<sub>D1</sub>/I<sub>G</sub> of 1.50). As anode active materials, BHC-1500 possesses a specific capacity of 254 mAh/g at 20 mA/g with initial coulombic efficiency of 79 %, a rate performance of 24.8% in 20-1000 mA/g, a capacity retention of 72 % after 1000 cycles at 500 mA/g, suggesting the excellent electrochemical sodium storage performances, which may be concerned with the highest proportion of pseudo-graphite carbon, appropriate carbon layer spacing, functional groups and defect concentration. The ex-situ XRD test confirms sodium storage mechanism of “adsorption-intercalation/filling” in hard carbon. This work can provide new ideas for clean utilization of long-flame coal and developing high performances anode active materials for SIBs.</div></div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"267 ","pages":"Article 108159"},"PeriodicalIF":7.2,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142723854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental study and characterisation of a novel two stage bubbling fluidised bed gasification process utilising municipal waste wood 利用城市废木料的新型两级鼓泡流化床气化工艺的实验研究和特性分析

IF 7.2 2区工程技术

Fuel Processing Technology Pub Date : 2024-11-25 DOI: 10.1016/j.fuproc.2024.108156

M. Kresta , D. Gurtner , L. Nohel , A. Hofmann , C. Pfeifer

{"title":"Experimental study and characterisation of a novel two stage bubbling fluidised bed gasification process utilising municipal waste wood","authors":"M. Kresta , D. Gurtner , L. Nohel , A. Hofmann , C. Pfeifer","doi":"10.1016/j.fuproc.2024.108156","DOIUrl":"10.1016/j.fuproc.2024.108156","url":null,"abstract":"<div><div>Biomass gasification has increased due to its ability to provide high-temperature heat, making it promising for the decarbonisation of industrial processes. The economic and technical challenges of large-scale operations need to be addressed by focusing on small-sized gasifiers, while the use of low-grade biomass, is essential to increase the flexibility and sustainability of the plant. However, the utilisation of low-grade biomass is hindered by challenges stemming from variations in the particle distribution and shape, which significantly impact the fluidisation process and overall. In this research, the gasification of shredded municipal waste wood in a pilot-scale bubbling fluidised bed reactor was demonstrated, and the fluid-dynamics and gas production were assessed. The gasification process was yielding a gas with a lower heating value between 3.5MJNm<sup>−3</sup> and 3.9MJNm<sup>−3</sup> and a cold gas efficiency (CGE) of 46.4 %–48.6 %. Notably, these CGE values are consistent with pilot-scale setups, where CGE values above 50 % are typically not achievable because of poor insulation standards. The reactor's conical shape facilitated dynamic fluid regime transitions, ensuring efficient gas-solid interactions. This design allowed optimisation of fluidisation by accommodating particles of varying sizes throughout the reactor's height, thereby promoting efficient gasification suitable for industrial applications with diverse biomass feedstocks.</div></div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"266 ","pages":"Article 108156"},"PeriodicalIF":7.2,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142701025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Intelligent control system and operational performance optimization of a municipal solid waste incineration power plant 城市固体废物焚烧发电厂的智能控制系统和运行性能优化

IF 7.2 2区工程技术

Fuel Processing Technology Pub Date : 2024-11-20 DOI: 10.1016/j.fuproc.2024.108162

Meixi Zhu, Yi Zhang

{"title":"Intelligent control system and operational performance optimization of a municipal solid waste incineration power plant","authors":"Meixi Zhu, Yi Zhang","doi":"10.1016/j.fuproc.2024.108162","DOIUrl":"10.1016/j.fuproc.2024.108162","url":null,"abstract":"<div><div>This study proposed an integrated intelligent control system in one municipal solid waste incineration power plant to improve the system's control accuracy, economic performance and environmental impact, including the intelligent combustion, intelligent denitrification, intelligent desulfurization and intelligent soot-blowing control subsystems. The precise detection and adjustment of the key operational parameters was achieved by integrating these modules into the existing distributed control system. A comparative analysis of the operation data between pre-optimization and post-optimization states was conducted to assess the changes in the key operational and economic parameters. The results indicate that the introduction of the intelligent control module can significantly improve the system stability and parameter control accuracy, thereby enhancing the economic efficiency of the waste incineration power plant and reducing the operation workload and the pollutants emissions. Specifically, the standard deviations of main steam flowrate and pressure decreased by 45.1 % and 60.7 %, respectively. Furthermore, the consumptions of the ammonia water and lime slurry were reduced by 38.2 % and 23.2 %, respectively, while the auxiliary power consumption rate declined by two percentage points, and the power generation per ton of waste increased by 4.2 %. These improvements not only strengthen the economic benefits but also effectively reduce the pollutants emissions.</div></div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"266 ","pages":"Article 108162"},"PeriodicalIF":7.2,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142701024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparative study on combustion and emission characteristics of methanol/gasoline blend fueled DISI engine under different stratified lean burn modes 不同分层贫燃模式下甲醇/汽油混合燃料 DISI 发动机燃烧和排放特性的比较研究

IF 7.2 2区工程技术

Fuel Processing Technology Pub Date : 2024-11-19 DOI: 10.1016/j.fuproc.2024.108160

Miaomiao Zhang, Jianbin Cao

{"title":"Comparative study on combustion and emission characteristics of methanol/gasoline blend fueled DISI engine under different stratified lean burn modes","authors":"Miaomiao Zhang, Jianbin Cao","doi":"10.1016/j.fuproc.2024.108160","DOIUrl":"10.1016/j.fuproc.2024.108160","url":null,"abstract":"<div><div>Combining stratified lean-burn techniques with methanol offers a promising path to achieving high efficiency and low emissions in direct-injection spark-ignition (DISI) engines. This work compares the stratified and homogeneous-stratified lean-burn characteristics of methanol/gasoline fuels on a DISI engine. Combustion and emissions characteristics under two stratified lean-burn strategies were investigated. The results indicate that compared to double-injection stratified lean-burn (DISL), single-injection stratified lean-burn (SISL) leads to more timely combustion, which deteriorates more slowly as the excess air ratio increases. Using M20 fuel with SISL achieves a higher tolerance for air dilution. At the same excess air ratio, SISL results in higher maximum in-cylinder pressure and combustion temperature, but lower exhaust temperature. The economic zone for SISL occurs with M40 fuel at λ = 1.3–1.6, whereas DISL's economic zone is within λ = 1.1–1.3. When λ is below 1.5, SISL produces higher hydrocarbon (HC) emissions but lower nitrogen oxides (NOx) emissions. However, as λ exceeds 1.5, HC emissions from DISL increase sharply while NOx emissions decrease significantly. The particle concentration from SISL is at least an order of magnitude higher than that from DISL, with particle size distribution forming a unimodal curve centered around accumulation mode particles. Conversely, DISL exhibits a quasi-bimodal distribution.</div></div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"266 ","pages":"Article 108160"},"PeriodicalIF":7.2,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142701023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Kinetic analysis and model evaluation for steam co-gasification of coal-biomass blended chars using macro-TGA 利用宏观 TGA 对煤与生物质混合焦炭蒸汽共气化进行动力学分析和模型评估

IF 7.2 2区工程技术

Fuel Processing Technology Pub Date : 2024-11-18 DOI: 10.1016/j.fuproc.2024.108151

Xi Cao, Changsheng Bu, Qijie Han, Xu Zhao, Guilin Piao

{"title":"Kinetic analysis and model evaluation for steam co-gasification of coal-biomass blended chars using macro-TGA","authors":"Xi Cao, Changsheng Bu, Qijie Han, Xu Zhao, Guilin Piao","doi":"10.1016/j.fuproc.2024.108151","DOIUrl":"10.1016/j.fuproc.2024.108151","url":null,"abstract":"<div><div>A macro-thermobalance (macro-TGA) was applied to investigate the steam co-gasification characteristics of the chars produced from Huainan coal (HN), two types of biomasses, sawdust (SD) and wheat straw (WS), and coal-biomass blends at 900–1200 °C under rapid heating conditions. The gasification reaction kinetics were determined by the homogeneous reaction model (VM), shrinking core model (SCM) and random pore model (RPM), and the optimal model was selected by deviation calculation. The results show that the char gasification reactivity increased with the increase of temperature. The promotion effect of biomass semi-coke on coal char mainly occurred in the stage when the carbon conversion rate was greater than 0.5, which is mainly attributed to the migration of active AAEMs to the surface of coal char to catalyze the gasification reaction in the later stage. However, with the increase in temperature, this promoting effect is weakened due to the increasing influence of mass transfer effects over chemical rate control, and increased volatilization of the inorganic species. The RPM model is suitable for describing the coal char gasification process, while the SCM was the model that best fitted the biomass semi-coke and coal/biomass blends, which elucidates the kinetic mechanisms governing the gasification process.</div></div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"266 ","pages":"Article 108151"},"PeriodicalIF":7.2,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142701022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0