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Research progress of chemical looping combustion
ZHANG Tao;SONG Tao;Chemical Looping Combustion (CLC) is a low-cost carbon capture technology.It uses metal oxides as oxygen carrier to achieve'oxygen carrying and releasing'and changes the traditional air oxidation mode.The technology has developed rapidly for nearly 25 years,from basic research to the establishment and self-heating operation of MWth scale demonstration devices.The basic CLC theory has been verified,gradually moving towards industrial demonstration process.The work starts from the basic CLC principle,focusing on three aspects:oxygen carrier,reactor,and operational optimization control.The suitable oxygen carrier for industrial application and its large-scale production technologies are introduced.The pressure distribution characteristics of interconnected fluidized bed reactors and the design,construction,and operation of MWth scale CLC reactors in worldwide are summarized.Finally,regarding the optimization control of CLC operation,the factors and control methods that affect CO2 purity and carbon capture efficiency are elaborated,future development needs to address a series of issues such as the heat transfer mechanism in the chemical chain reaction process of activated oxygen carrier particles,the chemical reaction mechanism of oxygen carrier-fuel ash,the construction of accurate reaction kinetic modeling of the chemical chain reaction process of solid fuels,the further scaling up of the reactor and industrial demonstration,etc.,in order to provide a reference for the research of chemical chain combustion technology.
The advantage of Electrostatic and Fabric Composite Filter on coal-fired power plants
As an efficient electri-bag composite dust-collector,it has became a good application prospect,and it has been used in precipitator's remake in coal-fired power plant increasingly.The current stituation of flue gas dust removal applied in coal-fired power plant was analyzed and discussed.The principles of three dedusting methods were explained,which are electrostatic precipitator,bag filter and electri-bag composite dust-collector.The advantages and disadvantages of the three dedusting methods were also discussed.In new emission standard,the electri-bag composite dust-collector was more advantages in dust removal.
The influencing factors of desulfurized gypsum quality and its resourceful application
Based on quality analysis of gypsum slurry,the factors influencing on the quality of desulfurized gypsum are studied.The control measures of promoting the gupsum quality are discussed.Based on the study,the content of natural gypsum and desulfurized gypsum are analyzed and a conclution that desulfurized gypsum is utilizable has been get.Some industrialized and agricultural application of desulfurized gypsum are introduced according to related materials from domestic and overseas.
Methods to treat waste water from limestone wet flue gas desulfurization in power plant
The peculiarity of waste water from limestone wet flue gas desulfurization(FGD) is described in this paper.A global prevailing technology and its defects are introduced,which are used to remove heavy metals suspend granule through chemical precipitation;some new developing methods such as fluidized bed and precipitation-microfiltration are introduced especially.
Design of limestone-gypsum FGD absorber for 2×300MW units in the thermal power plant
XUE Qin,WANG Zi-bo,LUO Wei-guoA brief introduction of the design and selection for FGD system,which is wet limestone-gypsum FGD process for a power plant in Shanxi province were put forward.The process design about the key equipment and the internal circulation system were discussed.The equipment type selection were also analyzed.
The application of activated carbon material in SOx and NOx removal
The special sorption of traditional activated carbon and activated carbon fibre material are summarized briefly.The principle of the application of activated carbon fibre material in desulfurization and denitrification is introduced.In the same time some suggestions that more work should be done about surface nature-alternative and reaction mechanism of desulfurization and denitrification are put forward.
Review of present situation and prospect for clean development of coal-fired power in China
The regulations and policies for the clean development of coal-fired power in China has improved and the corresponding actions has been strengthened continually.Electricity generation technologies and pollution control technologies have reached the world advanced level.Through the effects,the electricity generation efficiency keeps increasing while air pollutant emissions rapid decline,the carbon intensity continues declining and water consumption and wastewater discharge gradually decrease.In addition,the comprehensive utilization level of solid waste continues improving.Looking forward to the future,coal-fired power will maintain its role as an essential and flexible power supply,the electricity generation technology will continue to develop towards efficient and low-emission,pollutant emissions will keep decreasing,and the energy efficiency level will continue to improve.Though the clean development is still facing several tough tasks such as the carbon constraint,coal-fired power in China will completely reach the world leading level in all aspects.
Research advances in key materials and technologies for all-solid-state energy storage batteries
HUANG Jing;YUAN Wenlu;WANG Tao;[Objective]All-solid-state batteries, known for their high energy density and enhanced safety, are considered a highly promising next-generation energy storage technology. This paper aims to systematically review the progress in key materials and technologies for all-solid-state energy storage batteries, analyze their current challenges and future development directions, and provide references for related research, development, and optimization.[Methods]Through literature review, this paper first elaborates on the fundamental principles and research challenges of all-solid-state batteries. It systematically evaluates the research status and modification strategies for three key material categories: cathode, electrolyte, and anode, with a focus on the characteristics of oxide, sulfide, and polymer electrolytes, as well as LiCoO2, high-nickel ternary, and LiFePO4 cathodes, along with lithium metal, silicon, and carbon-based anodes. Furthermore, from the perspectives of key technologies such as interface engineering, structure and process optimization, and safety and cycle life enhancement, it discusses interface failure mechanisms and control strategies, fabrication processes such as multilayer stacking, hot pressing, and cold sintering, as well as strategies for lithium dendrite suppression and thermal runaway prevention.[Results]Analysis shows that strategies such as element doping, interface coating, composite structure design, and advanced manufacturing processes can effectively enhance the ionic conductivity of solid electrolytes, improve electrode/electrolyte interface stability, and suppress lithium dendrite growth, thereby improving the overall performance of all-solid-state batteries. The cited research works demonstrate significant progress in material modification and interface optimization.[Conclusion]All-solid-state batteries have broad application prospects in fields such as electric vehicles and high-end consumer electronics. However, their large-scale commercialization still faces challenges such as interface impedance, cost, and manufacturing processes. Future efforts require interdisciplinary collaboration and synergistic innovation in technologies such as materials genomics, artificial intelligence, advanced characterization, and simulation to drive the research, development, and industrialization of highperformance, safe, and low-cost all-solid-state batteries.
Analysis of technical approaches and development prospect of CCUS technology
HAN Gui-fen,ZHANG Min,BAO LiCarbon Capture,Utilization and Storage(CCUS),a new and enormous potential technology of large-scale eliminated reduction,has become one of the hottest issues all over the world recently.The fundamental principles of CCUS is presented briefly,the technical approaches of CCUS of China and several major developed countries are illustratecd,and the development of CCUS technology of China is analyzed,including principles,strategies and corroborated measures which aims at contributing to the development of CCUS technology and demonstration projects of our country.
The comparing of pusher aeration basin and completely mingled basin
The technical process and characteristics of pusher aeration basin and completely mingled ae r3tion basin arediscussed especially from their inside principle Two actual examples are anologied to explain the diffe re r'~ces betweenpusher aeration basin and completely mingled aeration basin