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Technical Perspective of Carbon Capture,Utilization,and Storage

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Engineering 2022年第7期8卷 27-32页

作者： Qingyang Lin Xiao Zhang Tao Wang chenghang zheng Xiang Gao State Key Laboratory of Clean Energy Utilization State Environmental Protection Engineering Center for Coal-Fired Air Pollution ControlZhejiang UniversityHangzhou 310027China

Carbon dioxide(CO_(2))is the primary greenhouse gas contributing to anthropogenic climate change which is associated with human *** majority of CO_(2) emissions are results of the burning of fossil fuels for energy,as well as industrial processes such as steel and cement *** capture,utilization,and storage(CCUS)is a sustainable technology promising in terms of reducing CO_(2) emissions that would otherwise contribute to climate *** this perspective,the discussion on carbon capture focuses on chemical absorption technology,primarily due to its commercialization *** CO_(2) absorptive capacity and absorption rate of various chemical solvents have been *** carbon utilization focuses on electrochemical conversion routes converting CO_(2) into potentially valuable chemicals which have received particular attention in recent *** Faradaic conversion efficiencies for various CO_(2) reduction products are used to describe efficiency *** carbon storage,successful deployment relies on a better understanding of fluid mechanics,geomechanics,and reactive transport,which are discussed in details.

关键词： CCUS Carbon capture Carbon utilization Carbon storage Chemical absorption Electrochemical conversion Storage mechanism

Electrostatic removal of ultrafine carbon black with square-grooved collecting plates:Insights for capturing black carbon emitted from ships

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Journal of Environmental Sciences 2024年第2期136卷 559-569页

作者： Zhicheng Wu YifanWang Lingyu Shao Hao Zhang Haobo Dai Haidong Fan chenghang zheng Xiang Gao State Key Lab of Clean Energy Utilization State Environmental Protection Engineering Center for Coal-Fired Air Pollution ControlZhejiang UniversityHangzhou 310027China Department of Earth and Environmental Sciences University of ManchesterOxford RoadUnited Kingdom Zhejiang Tiandi Environmental Protection Engineering Co. Ltd.Hangzhou 310012China Baima Lake Laboratory(Zhejiang Provincial Laboratory of Energy and Carbon Neutrality) Hangzhou 310000China

Ships and other mobile pollution sources emitted massive ultrafine and low-resistivity particles containing black carbon(BC),which were harmful to human health and were difficult to capture by conventional electrostatic precipitators(ESPs).In this study,nanoscale carbon black was adopted as simulated particles(SP)with similar physicochemical properties for black carbon emitted from ships(SP-BC)to investigate the feasibility of using an ESP with square-grooved collecting plates for the removal of SP-BC at low *** increased applied voltage significantly improved the total collection of SP-BC whereas may also promote the conversion of relatively larger particle size SP-BC into nano-size below *** outlet number concentration of SP-BC under 27 kV at 130℃was three times that of the *** the reduction of the flow rate could strengthen the capture of SP-BC below20 nm,and under the combined action of low flow rate and maximum applied voltage,the collection efficiency of 20-100 nm SP-BC could exceed 90%.In addition,the escape and capture characteristics of SP-BC under long-term rapping were *** square-grooved collecting plate could effectively restrain the re-entrainment of collected SP-BC generated by rapping,and the nanoscale SP-BC was trapped in the grooves after *** results could provide insights into the profound removal of massive nanoscale black carbon emissions from mobile sources.

关键词： Simulated ship black carbon Electrostatic removal Square-grooved collecting plate Long-term rapping

Experimental study of NO_2 reduction in N_2/Ar and O_2/Ar mixtures by pulsed corona discharge

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Journal of Environmental Sciences 2014年第11期26卷 2249-2256页

作者： Xinbo Zhu chenghang zheng Xiang Gao Xu Shen Zhihua Wang Zhongyang Luo Kefa Cen State Key Laboratory of Clean Energy Utilization Zhejiang University Zhejiang Electric Power Design Institute

Non-thermal plasma technology has been regarded as a promising alternative technology for NOx removal. The understanding of NO2 reduction characteristics is extremely important since NO2 reduction could lower the total NO oxidation rate in the plasma atmosphere. In this study, NO2 reduction was experimentally investigated using a non-thermal plasma reactor driven by a pulsed power supply for different simulated gas compositions and operating parameters. The NO2 reduction was promoted by increasing the specific energy density （SED）, and the highest conversion rates were 33.7%, 42.1% and 25.7% for Ar, N2/Ar and O2/Ar, respectively. For a given SED, the NO2 conversion rate had the order N2/Ar 〉 Ar 〉 02/Ar. The highest energy yield of 3.31 g/kWh was obtained in N2/Ar plasma and decreased with increasing SED; the same trends were also found in the other two gas compositions. The conversion rate decreased with increasing initial NO2 concentration. Furthermore, the presence of N2 or O2 led to different reaction pathways for NO2 conversion due to the formation of different dominating reactive radicals.

关键词： Non-thermal plasma Pulsed corona discharge NO NO2

Advances in air pollution control for key industries in China during the 13th five-year plan

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Journal of Environmental Sciences 2023年第1期123卷 446-459页

作者： Xuecheng Wu Yanping Yang Yue Gong Zhiwen Deng Ying Wang Weihong Wu chenghang zheng Yongxin Zhang State Key Laboratory of Clean Energy Utilization College of Energy EngineeringZhejiang UniversityHangzhou 310027China Jiaxing Research Institute of Zhejiang University Jiaxing 314051China

Industrial development is an essential foundation of the national economy,but the industry is also the largest source of air pollution,of which power plants,iron and steel,building materials,and other industries emit large amounts of ***,the Chinese government has promulgated a series of stringent emission regulations,and it is against this backdrop that research into air pollution control technologies for key industrial sectors is in full *** particular,during the 13th Five-Year Plan,breakthroughs have been made in pollution control technology for key industrial sectors.A multi-pollutant treatment technology system of desulfurization,denitrification,and dust collection,which applies to key industries such as power plants,steel,and building materials,has been ***-performance materials for the treatment of different pollutants,such as denitrification catalysts and desulfurization absorbers,were *** the same time,multi-pollutant synergistic removal technologies for flue gas in various industries have also become a hot research topic,with important breakthroughs in the synergistic removal of NO_(x),SO_(x),and *** to the increasingly stringent emission standards and regulations in China,there is still a need to work on the development of multi-pollutant synergistic technologies and further research and development of synergistic abatement technologies for CO_(2) to meet the requirements of ultra-low emissions in industrial sectors.

关键词： Key industries Desulfurization Denitrification Dust collection Multi-pollutant control

Technology development and cost analysis of multiple pollutant abatement for ultra-low emission coal-fired power plants in China

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Journal of Environmental Sciences 2023年第1期123卷 270-280页

作者： Yongxin Zhang Cong Luo Yan Lu You Zhang Can Zhou Zhiying Zhou Xuecheng Wu chenghang zheng Xiang Gao State Key Lab of Clean Energy Utilization State Environmental Protection Engineering Center for Coal-Fired Air Pollution ControlZhejiang UniversityHangzhou 310027China Zhejiang University Energy Engineering Design and Research Institute Co.Ltd. Hangzhou 310027China

The implementation of ultra-low emission(ULE)limits(SO_(2):35 mg/m3,NOx:50 mg/m3,PM:10 mg/m3)promoted the development of flue gas treatment technologies in *** control technology development for Chinese coal-fired power plants was summarized and an analysis of the applicability and cost of pollutant control technologies was *** data were collected from 30 ultra-low emission coal-fired units across *** on a cost analysis model,the average unit power generation incremental costs were 0.0144and 0.0095 CNY/(kW·hr)for SO_(2)and NOx control technologies,*** unit power generation incremental cost of twin spray tower technology was 7.2%higher than that of dual-loop spray tower *** effect of key parameters on operating cost was *** unit power generation incremental cost increased because of increments in the electricity price for SO_(2)control technology and the price of the reductant in NOx control *** high sulfur content or NOx concentration,the unit power generation incremental cost caused by pollutant control increased,whereas the unit pollutant abatement cost ***,the annual operating hours or load increased,thereby leading to a decline in unit power generation incremental cost and unit pollutant abatement cost.

关键词： SO_(2) NOx Economic Influence factor

Systematic control technologies for gaseous pollutants from non-ferrous metallurgy

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Journal of Environmental Sciences 2023年第1期123卷 65-82页

作者： Hui Liu Fenghua Shen Qingzhu Li Minneng Wen Hongliang Zhang Linhua Jiang chenghang zheng Yan Liu Tao Liu Liyuan Chai School of Metallurgy and Environment Central South UniversityChangsha 410083China Chinese National Engineering Research Center for Control&Treatment of Heavy Metal Pollution Changsha 410083China State Key Joint Laboratory of Environmental Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China College of Environmental Science and Engineering Tongji UniversityShanghai 200092China State Key Lab of Clean Energy Utilization State Environmental Protection Engineering Center for Coal-Fired Air Pollution ControlZhejiang UniversityHangzhou 310027China Key Laboratory of Ecological Metallurgy of Multi-metal Intergrown Ores of Ministry of Education School of MetallurgyNortheastern UniversityShenyang 110819China School of Resource and Environmental Engineering Wuhan University of Science and TechnologyWuhan 430081China

Air pollutant emissions represent a critical challenge in the green development of the non-ferrous metallurgy *** work studied the emission characteristics,formation mechanisms,phase transformation and separation of typical air pollutants,such as heavy metal particles,mercury,sulfur oxides and fluoride,during non-ferrous smelting.A series of purification technologies,including optimization of the furnace throat and hightemperature discharge,were developed to collaboratively control and recover fine particles from the flue gas of heavy metal smelting processes,including copper,lead and *** improvements have been realized in wet scrubbing technology for removing mercury,fluoride and SO_(2)from flue ***-liquid sulfidation technology by applying H_(2)S was invented to recycle the acid scrubbing wastewater more efficiently and in an eco-friendly *** on digital technology,a source reduction method was designed for sulfur and fluoride control during the whole aluminum electrolysis *** desulfurization technologies were developed for catalytic reduction of the sulfur content in petroleum coke at low temperature and catalytic reduction of SO_(2)to elemental *** work has established the technology for coupling multi-pollutant control and resource recovery from the flue gas from non-ferrous metallurgy,which provides the scientific theoretical basis and application technology for the treatment of air pollutants in the non-ferrous metallurgy industry.

关键词： Non-ferrous smelting Gaseous pollutant Flue gas purification Acid wastewater Heavy metal

Recent advances,challenges,and perspectives on carbon capture

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Frontiers of Environmental Science & Engineering 2024年第6期18卷 75-104页

作者： Shihan Zhang Yao Shen chenghang zheng Qianqian Xu Yifang Sun Min Huang Lu Li Xiongwei Yang Hao Zhou Heliang Ma Zhendong Li Yuanhang Zhang Wenqing Liu Xiang Gao Institute of Energy and Sustainable Development Zhejiang University of TechnologyHangzhou 310014China College of Environment Zhejiang University of TechnologyHangzhou 310014China Baima Lake Laboratory Hangzhou 310051China Institute of Carbon Neutrality College of Energy EngineeringZhejiang UniversityHangzhou 310027China State Key Joint Laboratory of Environmental Simulation and Pollution Control College of Environmental Sciences and EngineeringPeking UniversityBeijing 100871China Key Laboratory of Environmental Optics and Technology Anhui Institute of Optics and Fine MechanicsHFIPSChinese Academy of SciencesHefei 230031China

Carbon capture,utilization and storage(CCUS)technologies play an essential role in achieving Net Zero Emissions *** the lack of timely reviews on the recent advancements in promising CCUS technologies,it is crucial to provide a prompt review of the CCUS advances to understand the current research gaps pertained to its industrial *** that end,this review first summarized the developmental history of CCUS technologies and the current large-scale ***,based on a visually bibliometric analysis,the carbon capture remains a hotspot in the CCUS *** that the materials applied in the carbon capture process determines its *** a result,the state-of-the-art carbon capture materials and emerging capture technologies were comprehensively summarized and *** between state-of-art carbon capture process and its ideal counterpart are analyzed,and insights into the research needs such as material design,process optimization,environmental impact,and technical and economic assessments are provided.

关键词： Carbon capture,utilization and storage Visualization analysis Research hotspots and trends CO_(2)capture technology

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听无弦琴:清代集《兰亭》联的书写与生成

文艺研究 2024年第2期 141-153页

作者：郑成航浙江大学艺术与考古学院

清代以后,对联成为最流行的书法形制之一,经典法书《兰亭序》随即成为对联创作的重要资源,代表产物就是集《兰亭》联。清人大量集撰并书写这类对联,却不遵循传统的集字原则,既不保留《兰亭序》原帖的字体、书风,也不保留原文文句,只是... 详细信息

清代以后,对联成为最流行的书法形制之一,经典法书《兰亭序》随即成为对联创作的重要资源,代表产物就是集《兰亭》联。清人大量集撰并书写这类对联,却不遵循传统的集字原则,既不保留《兰亭序》原帖的字体、书风,也不保留原文文句,只是从原文中选取若干个单字组合成联句,将之作为文本意义上的“词库”使用。然而在观者眼中,集《兰亭》联与《兰亭序》原作之间的“回溯”关系仍然清晰可辨。从中可见,《兰亭序》凭借其文本和书法特性以及文化上的经典地位,即使在被解构和重组后,仍能成为富有经典意味的艺术样式。这一现象与明清以来诸多书法变革有关,也显现了更为深远的书法史变迁。

关键词：《兰亭序》书法史艺术样式书风无弦琴文本意义法书集字

针对SO2脱除的煤基活性炭结构及表面优化调控

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煤炭学报 2019年第5期44卷 1593-1600页

作者：于馨凝林国鑫刘少俊郑成航高翔浙江大学能源清洁利用国家重点实验室浙江杭州310027 重庆大学低品位能源利用技术及系统教育部重点实验室重庆400044

以神华褐煤为原料,ZnCl2为活化剂,采用化学活化法制备煤基活性炭,并通过NaOH溶液改性调控活性炭表面的化学官能团,进行烟气中SO2吸附的研究。利用扫描电镜观察活性炭的表观形貌,利用低温N2吸附法表征活性炭的比表面积及孔隙结构,利用红... 详细信息

以神华褐煤为原料,ZnCl2为活化剂,采用化学活化法制备煤基活性炭,并通过NaOH溶液改性调控活性炭表面的化学官能团,进行烟气中SO2吸附的研究。利用扫描电镜观察活性炭的表观形貌,利用低温N2吸附法表征活性炭的比表面积及孔隙结构,利用红外光谱和Boehm滴定法考察活性炭的表面化学官能团。基于响应曲面法(RSM),对煤基活性炭的制备工艺参数进行了详细探究,建立了炭化温度、炭化时间、升温速率对活性炭比表面积的预测模型。通过响应曲面法得到的煤基活性炭制备实验优化工艺条件为:炭化温度700℃,升温速率15℃/min,炭化时间3h。得到活性炭的BET比表面积为599m^2/g,微孔比表面积为269m2/g。考察NaOH溶液浓度对煤基活性炭的孔隙结构、表面化学官能团及SO2吸附量的影响机制。结果表明,NaOH改性后活性炭的表面更加凹凸不平,孔结构被剧烈破坏,活性炭的孔径主要分布在0.5~0.6,0.7~0.9和1.0~4.0nm范围。在20%NaOH浓度改性时,活性炭具有最高的比表面积(681m2/g)和微孔比表面积(292m^2/g)。说明低浓度的碱处理对活性炭有扩孔的效果,而碱浓度过高会导致孔结构破坏,比表面积和孔容下降。随着NaOH浓度的增加,活性炭表面的羧基、羟基等酸性基团的含量下降,而羰基等碱性基团的含量则明显增加。30%NaOH浓度处理样品的碱性基团含量最高,可达到0.557mmol/g。进一步对活性炭的微孔比表面积、碱性官能团含量与SO2吸附量的相关性进行分析,发现SO2吸附量与微孔比表面积和碱性官能团含量都呈现正线性相关关系,且碱性官能团含量的相关性高于微孔比表面积。因此,表面碱性官能团和微孔结构有利于SO2在活性炭表面的吸附。

关键词：活性炭响应曲面法孔结构官能团 SO2吸附