Carbon dioxide(CO_(2))emissions from the cement industry account for 26%of the total industrial emissions,and the need to develop low-carbon techniques within the cement industry is extremely urgent.Low-carbon project...Carbon dioxide(CO_(2))emissions from the cement industry account for 26%of the total industrial emissions,and the need to develop low-carbon techniques within the cement industry is extremely urgent.Low-carbon projects and technologies for the cement industry in different regions and countries have been thoroughly reviewed in this manuscript,and the low-carbon development concept for each county has been analyzed.For developing countries such as China and India,energy saving and efficiency enhancement are currently the key points,while for developed countries and regions such as Europe,more efforts have been focused on carbon capture,utilization,and storage(CCUS).Global CCUS projects have been previously conducted,and the majority of CCUS projects are currently performed in Europe where major projects such as the CEMCAP,CLEANKER,and IEILAC projects represent the latest research progress in cement production technologies and low-carbon technologies for the global cement industry.The development of low-carbon cement technologies has changed from focusing on the end point to instead focusing on the source and process through the exploration of hydrogen and solar energies,and more disruptive and original technologies are expected to be developed,particularly in the cement industry in China.展开更多
运用文献计量工具CiteSpace对Web of Science(WoS)核心合集数据库收录1991—2021年发表的8985篇与工业碳排放相关的文献进行可视化分析,以期梳理该领域的研究趋势及进展,为国内工业碳排放后续研究提供前瞻性参考。结果表明:(1)自1991年...运用文献计量工具CiteSpace对Web of Science(WoS)核心合集数据库收录1991—2021年发表的8985篇与工业碳排放相关的文献进行可视化分析,以期梳理该领域的研究趋势及进展,为国内工业碳排放后续研究提供前瞻性参考。结果表明:(1)自1991年起,国际工业碳排放研究经历了萌芽、稳步提升、爆发增长三个阶段,该领域研究热度持续上升,近五年年度发文量的环比增速维持在6.01%—19.70%之间。在国际上,美国最早开始进行工业碳排放研究,我国发文量位居第一,但研究起步较晚,且我国与除澳大利亚外的国家合作较弱。(2)研究内容聚焦于“二氧化碳排放”、“大气二氧化碳”、“生态系统”、“能源消耗”等方面,“工业生态学”、“黑碳”、“可再生能源”、“城镇化”等关键词突现强度大,预计将成为该领域的研究前沿及趋势。(3)研究热点包括碳排放增长的驱动因素研究、碳排放与经济增长的脱钩效应研究、二氧化碳的捕集利用和封存等主题,体现了从理论研究到具体应用的演进过程。综上,国内学者应借鉴国际研究相关经验,在把握整体研究脉络的基础上,进一步深入挖掘研究重点、创新研究方法、加强国际交流合作,从工业碳排放角度为我国经济可持续发展提供理论依据。展开更多
Carbon dioxide(CO_(2))is the main contributor to greenhouse gases that affect global warming.The industrial sector is the third largest producer of CO_(2) and the cement industry is one of the industries that consiste...Carbon dioxide(CO_(2))is the main contributor to greenhouse gases that affect global warming.The industrial sector is the third largest producer of CO_(2) and the cement industry is one of the industries that consistently produces the most significant CO_(2) emissions.The cement industry produces 5-8% of global CO_(2) emissions.Several methods for reducing specific CO_(2) emissions have been reported in the cement industry,including calcium looping,which uses the reversible reaction between calcination[calcium carbonate(CaCO_(3))decomposition]and carbonation[CO_(2) capture by calcium oxide(CaO)].This work investigates calcium looping employing limestone obtained directly from several cement factories in Indonesia to observe the carbon-absorption characteristics of limestone from different mining locations.The experiment was carried out using a tube furnace equipped with a controlled atmospheric condition that functions as a calciner and a carbonator.X-ray diffraction and scanning electron microscopy with energy-dispersive x-ray spec-troscopy characterization were conducted to analyse the changes in the experimental samples.The results demonstrated that the reactor configuration was capable of performing the calcination process,which converted CaCO_(3) to calcium hydroxide[Ca(OH)_(2)],as well as the carbonation process,which captured carbon and converted it back to CaCO_(3).Parametric analysis was performed on both reactions,including pressure,temperature,duration,particle size and reaction atmosphere.The results show that the limestone obtained from all sites can be used as the sorbents for the calcium-looping process with an average reactivity of 59.01%.Limestone from cement plants in various parts of Indonesia has the potential to be used as carbon sorbents in calcium-looping technology.With a similar CO_(2) concentration as the flue gas of 16.67%,the experimental results show that Bayah limestone has the maximum reactivity,as shown by the highest carbon-content addition of 12.15 wt% and has the highest CO_(2)-capture capability up to>75% per mole of Ca(OH)_(2) as a sorbent.Similar levels of the ability to capture CO_(2) per mole of Ca(OH)_(2) can be found in other limestones,ranging from 14.85% to 34.07%.The results show a promising performance of raw limestones from different mining sites,allowing further study and observation of the possibility of CO_(2) emission reduction in the sustainable cement-production process.展开更多
全球变暖的问题正变得日益严峻,碳减排碳中和已成为国际社会的共识和努力目标。作为CO_(2)减排的重要方式之一,二氧化碳捕集、利用与封存(Carbon Capture,Utilization and Storage,CCUS)近年来备受关注并且发展迅猛。CO_(2)海洋封存作...全球变暖的问题正变得日益严峻,碳减排碳中和已成为国际社会的共识和努力目标。作为CO_(2)减排的重要方式之一,二氧化碳捕集、利用与封存(Carbon Capture,Utilization and Storage,CCUS)近年来备受关注并且发展迅猛。CO_(2)海洋封存作为其中一种最具潜力的减排方式,了解其发展现状对进一步研究CO_(2)封存具有重要的参考价值。本文介绍了CO_(2)海洋封存的方法和封存机理,总结了该技术在国内外研究进展。此外,文章还概述了我国在CO_(2)海洋封存上的巨大潜力和库源匹配上的优势,以及海洋封存对环境可能造成的影响。最后,指出推进CO_(2)海洋封存技术的研究并开发相应的能力,将有助于加速推进碳减排进程、尽快实现碳中和目标。展开更多
基金supported by the National Natural Science Foundation of China (No.52170119)the Youth Innovation Promotion Association of the Chinese Academy of Sciences (No.2021044)。
文摘Carbon dioxide(CO_(2))emissions from the cement industry account for 26%of the total industrial emissions,and the need to develop low-carbon techniques within the cement industry is extremely urgent.Low-carbon projects and technologies for the cement industry in different regions and countries have been thoroughly reviewed in this manuscript,and the low-carbon development concept for each county has been analyzed.For developing countries such as China and India,energy saving and efficiency enhancement are currently the key points,while for developed countries and regions such as Europe,more efforts have been focused on carbon capture,utilization,and storage(CCUS).Global CCUS projects have been previously conducted,and the majority of CCUS projects are currently performed in Europe where major projects such as the CEMCAP,CLEANKER,and IEILAC projects represent the latest research progress in cement production technologies and low-carbon technologies for the global cement industry.The development of low-carbon cement technologies has changed from focusing on the end point to instead focusing on the source and process through the exploration of hydrogen and solar energies,and more disruptive and original technologies are expected to be developed,particularly in the cement industry in China.
文摘运用文献计量工具CiteSpace对Web of Science(WoS)核心合集数据库收录1991—2021年发表的8985篇与工业碳排放相关的文献进行可视化分析,以期梳理该领域的研究趋势及进展,为国内工业碳排放后续研究提供前瞻性参考。结果表明:(1)自1991年起,国际工业碳排放研究经历了萌芽、稳步提升、爆发增长三个阶段,该领域研究热度持续上升,近五年年度发文量的环比增速维持在6.01%—19.70%之间。在国际上,美国最早开始进行工业碳排放研究,我国发文量位居第一,但研究起步较晚,且我国与除澳大利亚外的国家合作较弱。(2)研究内容聚焦于“二氧化碳排放”、“大气二氧化碳”、“生态系统”、“能源消耗”等方面,“工业生态学”、“黑碳”、“可再生能源”、“城镇化”等关键词突现强度大,预计将成为该领域的研究前沿及趋势。(3)研究热点包括碳排放增长的驱动因素研究、碳排放与经济增长的脱钩效应研究、二氧化碳的捕集利用和封存等主题,体现了从理论研究到具体应用的演进过程。综上,国内学者应借鉴国际研究相关经验,在把握整体研究脉络的基础上,进一步深入挖掘研究重点、创新研究方法、加强国际交流合作,从工业碳排放角度为我国经济可持续发展提供理论依据。
基金supported by Research and Community Service Program(P2MI)ITB.
文摘Carbon dioxide(CO_(2))is the main contributor to greenhouse gases that affect global warming.The industrial sector is the third largest producer of CO_(2) and the cement industry is one of the industries that consistently produces the most significant CO_(2) emissions.The cement industry produces 5-8% of global CO_(2) emissions.Several methods for reducing specific CO_(2) emissions have been reported in the cement industry,including calcium looping,which uses the reversible reaction between calcination[calcium carbonate(CaCO_(3))decomposition]and carbonation[CO_(2) capture by calcium oxide(CaO)].This work investigates calcium looping employing limestone obtained directly from several cement factories in Indonesia to observe the carbon-absorption characteristics of limestone from different mining locations.The experiment was carried out using a tube furnace equipped with a controlled atmospheric condition that functions as a calciner and a carbonator.X-ray diffraction and scanning electron microscopy with energy-dispersive x-ray spec-troscopy characterization were conducted to analyse the changes in the experimental samples.The results demonstrated that the reactor configuration was capable of performing the calcination process,which converted CaCO_(3) to calcium hydroxide[Ca(OH)_(2)],as well as the carbonation process,which captured carbon and converted it back to CaCO_(3).Parametric analysis was performed on both reactions,including pressure,temperature,duration,particle size and reaction atmosphere.The results show that the limestone obtained from all sites can be used as the sorbents for the calcium-looping process with an average reactivity of 59.01%.Limestone from cement plants in various parts of Indonesia has the potential to be used as carbon sorbents in calcium-looping technology.With a similar CO_(2) concentration as the flue gas of 16.67%,the experimental results show that Bayah limestone has the maximum reactivity,as shown by the highest carbon-content addition of 12.15 wt% and has the highest CO_(2)-capture capability up to>75% per mole of Ca(OH)_(2) as a sorbent.Similar levels of the ability to capture CO_(2) per mole of Ca(OH)_(2) can be found in other limestones,ranging from 14.85% to 34.07%.The results show a promising performance of raw limestones from different mining sites,allowing further study and observation of the possibility of CO_(2) emission reduction in the sustainable cement-production process.
文摘全球变暖的问题正变得日益严峻,碳减排碳中和已成为国际社会的共识和努力目标。作为CO_(2)减排的重要方式之一,二氧化碳捕集、利用与封存(Carbon Capture,Utilization and Storage,CCUS)近年来备受关注并且发展迅猛。CO_(2)海洋封存作为其中一种最具潜力的减排方式,了解其发展现状对进一步研究CO_(2)封存具有重要的参考价值。本文介绍了CO_(2)海洋封存的方法和封存机理,总结了该技术在国内外研究进展。此外,文章还概述了我国在CO_(2)海洋封存上的巨大潜力和库源匹配上的优势,以及海洋封存对环境可能造成的影响。最后,指出推进CO_(2)海洋封存技术的研究并开发相应的能力,将有助于加速推进碳减排进程、尽快实现碳中和目标。
