期刊文献+
共找到3,610篇文章
< 1 2 181 >
每页显示 20 50 100
Cause Analysis and Countermeasure of Gypsum Rain in Coal-fired Power Plants 被引量:8
1
作者 Qizhen Liu Yanjing Sun Yi Sun 《Journal of Environmental Protection》 2013年第1期1-4,共4页
Focusing on the phenomenon of gypsum rain while wet desulphurization(WFGD) were adopted in coal fired power plant without GGH, the paper studied and put forward the solutions : (1) desulfurization facilities related e... Focusing on the phenomenon of gypsum rain while wet desulphurization(WFGD) were adopted in coal fired power plant without GGH, the paper studied and put forward the solutions : (1) desulfurization facilities related equipment modification;(2) optimal operation of existing desulfurization facilities. 展开更多
关键词 coal fired power plant GYPSUM RAIN GGH WET DESULPHURIZATION
下载PDF
Sliding Mode Predictive Control of Main Steam Pressure in Coal-fired Power Plant Boiler 被引量:4
2
作者 史元浩 王景成 章云锋 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2012年第6期1107-1112,共6页
Since the combustion system of coal-fired boiler in thermal power plant is characterized as time varying, strongly coupled, and nonlinear, it is hard to achieve a satisfactory performance by the conventional proportio... Since the combustion system of coal-fired boiler in thermal power plant is characterized as time varying, strongly coupled, and nonlinear, it is hard to achieve a satisfactory performance by the conventional proportional integral derivative (PID) control scheme. For the characteristics of the main steam pressure in coal-fired power plant boiler, the sliding mode control system with Smith predictive structure is proposed to look for performance and robustness improvement. First, internal model control (IMC) and Smith predictor (SP) is used to deal with the time delay, and sliding mode controller (SMCr) is designed to overcome the model mismatch. Simulation results show the effectiveness of the proposed controller compared with conventional ones. 展开更多
关键词 coal fired power plant boiler combustion system main steam pressure sliding mode control Smith predictor internal model control
下载PDF
Mercury Emission From Coal-fired Power Plants in China 被引量:29
3
作者 YIN Libao ZHUO Yuqun +3 位作者 XU Qisheng ZHU Zhenwu DU Wen AN Zhongyi 《中国电机工程学报》 EI CSCD 北大核心 2013年第29期I0001-I0014,共14页
燃煤是最大的人为汞排放源之一,燃煤电厂的汞排放控制问题也越来越为人们所关注。该文将目前公布的中国电厂的汞排放数据进行筛选汇总,得到18个电厂的汞排放数据,通过对比和分析,总结出了符合我国燃煤电厂特点的一般性汞排放规律。... 燃煤是最大的人为汞排放源之一,燃煤电厂的汞排放控制问题也越来越为人们所关注。该文将目前公布的中国电厂的汞排放数据进行筛选汇总,得到18个电厂的汞排放数据,通过对比和分析,总结出了符合我国燃煤电厂特点的一般性汞排放规律。结果表明:与美国煤种相比,我国的燃煤具有低氯、高灰的特性,这不利于汞的排放控制;循环流化床燃烧可能会因燃尽率的不同而较煤粉炉燃烧易获得较高的Hgp;空气污染控制设备的使用能够有效地减少汞排放,选择性催化还原+静电除尘器/布袋除尘器+石灰石-石膏湿法脱硫(SCR+ESP/FF+WFGD)组合的平均脱汞率可达71.48%;SCR的大规模应用可能会将汞大量转移到飞灰和脱硫石膏中,带来二次污染的问题。 展开更多
关键词 燃煤电厂 汞排放 中国 燃煤发电 微量元素 神经系统 排放源 污染物
下载PDF
Progress and prospects of innovative coal-fired power plants within the energy internet 被引量:7
4
作者 Yongping Yang Chengzhou Li +1 位作者 Ningling Wang Zhiping Yang 《Global Energy Interconnection》 2019年第2期160-179,共20页
The development of electrical engineering and electronic, communications, smart power grid, and ultra-high voltage transmission technologies have driven the energy system revolution to the next generation: the energy ... The development of electrical engineering and electronic, communications, smart power grid, and ultra-high voltage transmission technologies have driven the energy system revolution to the next generation: the energy internet. Progressive penetration of intermittent renewable energy sources into the energy system has led to unprecedented challenges to the currently wide use of coal-fired power generation technologies. Here, the applications and prospects of advanced coal-fired power generation technologies are analyzed. These technologies can be summarized into three categories:(1) large-scale and higher parameters coal-fired power generation technologies, including 620/650/700 oC ultra-supercritical thermal power and double reheat ultra-supercritical coal-fired power generation technologies;(2) system innovation and specific, highefficiency thermal cycles, which consist of renewable energy-aided coal-fired power generation technologies, a supercritical CO_2 Brayton cycle for coal-fired power plants, large-scale air-cooling coal-fired power plant technologies, and innovative layouts for waste heat utilization and enhanced energy cascade utilization;(3) coal-fired power generation combined with poly-generation technologies, which are represented by integrated gasification combined cycle(IGCC) and integrated gasification fuel cell(IGFC) technologies. Concerning the existing coal-fired power units, which are responsible for peak shaving, possible strategies for enhancing flexibility and operational stability are discussed. Furthermore, future trends for coal-fired power plants coupled with cyber-physical system(CPS) technologies are introduced. The development of advanced, coal-fired power generation technologies demonstrates the progress of science and is suitable for the sustainable development of human society. 展开更多
关键词 En ergy In ternet coal-fired power GEN eration FLEXIBILITY Cyber-physical system Smart power plant
下载PDF
Optimization of an Existing Coal-fired Power Plant with CO<sup>2</sup>Capture 被引量:2
5
作者 Ying Wu Wenyi Liu Yong-ping Yang 《Energy and Power Engineering》 2013年第4期157-161,共5页
Nowadays, the worsening environmental issue caused by CO2 emission is greatly aggravated by human activity. Many CO2 reduction technologies are under fast development. Among these, monoethanolamine (MEA) based CO2 cap... Nowadays, the worsening environmental issue caused by CO2 emission is greatly aggravated by human activity. Many CO2 reduction technologies are under fast development. Among these, monoethanolamine (MEA) based CO2 capture technology has been paid great attention. However, when connecting the CO2 capture process with a coal-fired power plant, the huge energy and efficiency penalty caused by CO2 capture has become a serious problem for its application. Thus, it is of great significance to reduce the related energy consumption. Based on an existing coal-fired power plant, this paper proposes a new way for the decarburized retrofitting of the coal-fired power plant, which helps to improve the overall efficiency of the power plant with less energy and efficiency penalty. The decarburized retrofitting scheme proposed will provide a new route for the CO2 capture process in China. 展开更多
关键词 MEA CO2 CAPTURE Decarburized Retrofitting coal-fired power PLANT
下载PDF
Investigation of the Contents of Natural Radionuclides in Coal and Ashes from Tuzla Coal-Fired Power Plants
6
作者 Ema Hankic Amela Kasic Amira Kasumovic Feriz Adrovic 《材料科学与工程(中英文B版)》 2013年第7期475-478,共4页
关键词 天然放射性核素 燃煤电厂 能源生产 燃煤发电厂 总放射性 波斯尼亚 高清晰度 相对效率
下载PDF
Extended application of carbon sorbent traps method in mercury concentration measurement in coal-fired power plants
7
作者 ZHONG Li XIAO Ping JIANG Jianzhong GUO Tao GUO An 《热力发电》 CAS 北大核心 2014年第6期23-31,共9页
关键词 碳吸附剂 循环流化床 电力行业 湿法烟气脱硫
下载PDF
COMPARATIVE RESEARCH ON THE CHARACTERISTICS OF THE FLYASH FROM COAL REFUSE-FIRED AND COAL-FIRED POWER PLANTS 被引量:1
8
作者 余继峰 韩作振 王秀英 《Journal of Coal Science & Engineering(China)》 2000年第1期63-67,共5页
The physical,chemical and mineral facies properties of the flyash from Xiezhuang Coal Refuse Fired Power Plant have been studied by means of naked eyes,microscope,chemical composition analysis and XRD analysis,and com... The physical,chemical and mineral facies properties of the flyash from Xiezhuang Coal Refuse Fired Power Plant have been studied by means of naked eyes,microscope,chemical composition analysis and XRD analysis,and compared with that of the flyash from Taian Coal Fired Power Plant.The result shows that the flyash from coal refuse fired power plant is of better quality in making construction items,for being brighter in color,fine and high activity.Some ways of comprehensive utilization of the ash have been suggested in this paper. 展开更多
关键词 FLYASH coal refuse fired power plant mineral facies XRD
全文增补中
Development of Carbon Dioxide Capture Technologies in Coal-Fired Power Plants
9
作者 Gao Shiwang, Xu Shisen, Liu Lianbo, Niu Hongwei and Cai Ming Xi’an Thermal Power Research Institute Co., Ltd. Liu Lianbo 《Electricity》 2010年第4期50-54,共5页
With a particular reference to China Huaneng Group's practices in CO_2 capture, this article presents a brief ing on the current development of CO_2 capture technologies in coal-fired power plants both in China an... With a particular reference to China Huaneng Group's practices in CO_2 capture, this article presents a brief ing on the current development of CO_2 capture technologies in coal-fired power plants both in China and abroad. Sooner or later, the integration of CO_2 capture and storage (CCS) facility with coal-fired power plant will be inevitably put on the agenda of developers. 展开更多
关键词 coal-fired power PLANT EMISSION control CARBON dioxide CAPTURE
下载PDF
The flue dust emission of the coal fired power plants in Zhejiang Province attains target
10
《Electricity》 1996年第1期54-54,共1页
According to statistics, the average dust collection efficiency of flue gas emission in the large and medium- sized power plants in Zhejiang Province at present has attained higher than 97% which surpasses the 95% sta... According to statistics, the average dust collection efficiency of flue gas emission in the large and medium- sized power plants in Zhejiang Province at present has attained higher than 97% which surpasses the 95% standard as stipulated by the Ministry of Electric Power. The dust collection efficiency of the Beilungang Power Plant has already attained 99.92%. In recent years, Zhejiang Electric Power Corporation has stipulated that all the newly constructed generating units shall be equipped with high efficiency electrostatic precipitator (ESP) while the existing power plants shall speed up their renovation work for their dust collectors. In combination with the fourth stage project of the Taizhou Power Plant, the improvement work of the dust 展开更多
关键词 The flue dust emission of the coal fired power plants in Zhejiang Province attains target
下载PDF
Computational Study on Furnace Process in a Multi-burner Boiler of Pulverized Coal Fired Tangentially at Four Corners 被引量:1
11
作者 Zhou, P Mei, C Cong, GC 《Journal of Central South University》 SCIE EI CAS 2000年第3期152-155,共4页
Aiming at the optimization of the operation condition, a general numerical method for calculating pulverized coal combustion in a full scale furnace fired tangentially at four corners is adopted. “ k ε ” turbulence... Aiming at the optimization of the operation condition, a general numerical method for calculating pulverized coal combustion in a full scale furnace fired tangentially at four corners is adopted. “ k ε ” turbulence model is used for the gas phases and a stochastic approach based on the Lagrangian technique is used for particle phases. Two competing reactions model for the coal devolatilization and PDF (the probability density function) method for the combustion of the gas phases are employed. In the numerical simulations, assuming the air distribution of second port level is of pagoda, waist drum and uniform type. The results show that pagoda type air distribution is advantageous to ignition and smooth combustion of pulverized coal, and suitable to inferior coal combustion in practice. In the present furnace, the igniting distance at 1st and 3rd corner is longer than that at 2nd and 4th corner. The results from numerical calculations are in good agreement with those of observed in practice. 展开更多
关键词 power station BOILER COMBUSTION of pulverized coal numerical simulation
下载PDF
Approach to reducing the effect of bone-coal power station on radiation environment 被引量:1
12
作者 NIShi-Ying GUPei-Long 《Nuclear Science and Techniques》 SCIE CAS CSCD 2002年第4期264-269,共6页
The effect of two bone-coal power stations(6MWe) on environment was investigated within the scope of the dose contribution caused by various radionucildes in different ways.It is found that the best measures to reduce... The effect of two bone-coal power stations(6MWe) on environment was investigated within the scope of the dose contribution caused by various radionucildes in different ways.It is found that the best measures to reduce the effect of bone-coal power station on radiation environment include to select a fine boiler system and a comprehensive utilization of the bone-coal cinder(BCC),soot and ash in the catchers. 展开更多
关键词 天然燃料 骨炭 粉末站 辐射环境
下载PDF
The collective dose equivalent in evaluated region of bone-coal power stations and bone-coal shafts
13
作者 ZHANG Liang JIANG Shan +4 位作者 KONG Ling-Li LI Ying YE Ji-Da SHI Jin-Hua WU Zong-Mei 《Nuclear Science and Techniques》 SCIE CAS CSCD 2005年第4期253-256,共4页
During 1991-1993, the radioactivity levels of the bone-coal mines were investigated in Hubei, Hunan, Ji-angxi, Zhejiang and Anhui Provinces, respectively, where the reserve of bone-coal is about 90% of our country’s ... During 1991-1993, the radioactivity levels of the bone-coal mines were investigated in Hubei, Hunan, Ji-angxi, Zhejiang and Anhui Provinces, respectively, where the reserve of bone-coal is about 90% of our country’s total reserve. The annual additional collective dose equivalent within 80km evaluated region of bone-coal power stations in Nijiangkou and Anren is 1.7 and 1.9 man·mSv, respectively, and that of Zhuantanyan bone-coal shaft is 1.4 man·mSv. The collective dose equivalent caused by bone-coal cinder brick produced for 25 years in the five prov-inces is 1.6×105 man Sv. 展开更多
关键词 骨煤 环境影响 环境保护 放射性等级 环境监测
下载PDF
Radioactivity level of the ambient environment of Anren bone-coal power station
14
作者 YEJI-Da LIUHong-Shi 《Nuclear Science and Techniques》 SCIE CAS CSCD 2002年第1期50-56,共7页
The radioactivity level of the ambient environment of Anren Bone-coal Power Station (BCPS) was investigated systematically. The γ radiation dose rate level in the environment, the content of 238U and 226Ra in the amb... The radioactivity level of the ambient environment of Anren Bone-coal Power Station (BCPS) was investigated systematically. The γ radiation dose rate level in the environment, the content of 238U and 226Ra in the ambient soil and the farmland in the direction of downwind, the concentrations of 238U. 232Th. 226Ra 40K and 222Rn as well as α potential energy in air, and the concentrations of natural U and Th in effluent are all higher than the corresponding values of the reference site. The additional annual effective dose equivalent to the residents living in the houses made of bone-coal cinder brick is 2.7 mSv. 展开更多
关键词 骨煤 燃骨煤粉电厂 放射性等级 环境
下载PDF
Single-Reheating or Double-Reheating, Which is Better for S-CO_2 Coal Fired Power Generation System? 被引量:2
15
作者 SUN Enhui XU Jinliang +2 位作者 HU Han YAN Chenshuai LIU Chao 《Journal of Thermal Science》 SCIE EI CAS CSCD 2019年第3期431-441,共11页
The objective of this paper is to provide the optimal choice of single-reheating or double-reheating when considering residual flue gas heat in S-CO_2 coal fired power system. The cascade utilization of flue gas energ... The objective of this paper is to provide the optimal choice of single-reheating or double-reheating when considering residual flue gas heat in S-CO_2 coal fired power system. The cascade utilization of flue gas energy includes three temperature levels, with high and low temperature ranges of flue gas heat extracted by S-CO_2 cycle and air preheater, respectively. Two methods are proposed to absorb residual flue gas heat Qre in middle temperature range. Both methods shall decrease CO_2 temperature entering the boiler T4 and increase secondary air temperature Tsec air, whose maximum value is deduced based on energy conservation in air preheater. The system is analyzed incorporating thermodynamics, boiler pressure drop and energy distribution. It is shown that at a given main vapor temperature T5, the main vapor pressure P5 can be adjusted to a value so that Qre is completely eliminated, which is called the main vapor pressure adjustment method. For this method, single-reheating is only available for higher main vapor temperatures. The power generation efficiency for single-reheating is obviously higher than double-reheating. If residual flue gas heat does exist, a flue gas heater FGC is integrated with S-CO_2 cycle, which is called the FGC method. Both single-reheating and double-reheating share similar power generation efficiency, but single-reheating creates less residual flue gas heat. We conclude that single-reheating is preferable, and the pressure adjustment method achieves obviously higher power generation efficiency than the FGC method. 展开更多
关键词 S-CO2 coal fired power system THERMODYNAMICS HEAT transfer REHEATING residual FLUE gas HEAT
原文传递
Research on solar aided coal-fired power generation system and performance analysis 被引量:30
16
作者 YANG YongPing CUI YingHong +3 位作者 HOU HongJuan GUO XiYan YANG ZhiPing WANG NinLing 《Science China(Technological Sciences)》 SCIE EI CAS 2008年第8期1211-1221,共11页
Integrating solar power utilization systems with coal-fired power units, the solar aided coal-fired power generation (SACPG) shows a significant prospect for the large-scale utilization of solar energy and energy savi... Integrating solar power utilization systems with coal-fired power units, the solar aided coal-fired power generation (SACPG) shows a significant prospect for the large-scale utilization of solar energy and energy saving of thermal power units. The methods and mechanism of system integration were studied. The parabolic trough solar collectors were used to collect solar energy and the integration scheme of SACPG system was determined considering the matching of working fluid flows and energy flows. The thermodynamic characteristics of solar thermal power generation and their effects on the performance of thermal power units were studied, and based on this the integration and optimization model of system structure and parameters were built up. The integration rules and coupling mecha- nism of SACPG systems were summarized in accordance with simulation results. The economic analysis of this SACPG system showed that the solar LEC of a typical SACPG system, considering CO2 avoidance, is 0.098 $/kW·h, lower than that of SEGS, 0.14 $/kW·h. 展开更多
关键词 SOLAR THERMAL power generation coal-fired power PLANT system integration performance analysis
原文传递
Economic analysis of atmospheric mercury emission control for coal-fired power plants in China 被引量:15
17
作者 Maria Pia Ancora Lei Zhang +2 位作者 Shuxiao Wang Jeremy Schreifels Jiming Hao 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2015年第7期125-134,共10页
Coal combustion and mercury pollution are closely linked, and this relationship is particularly relevant in China, the world's largest coal consumer. This paper begins with a summary of recent China-specific studies ... Coal combustion and mercury pollution are closely linked, and this relationship is particularly relevant in China, the world's largest coal consumer. This paper begins with a summary of recent China-specific studies on mercury removal by air pollution control technologies and then provides an economic analysis of mercury abatement from these emission control technologies at coal-fired power plants in China. This includes a cost-effectiveness analysis at the enterprise and sector level in China using 2010 as a baseline and projecting out to 2020 and2030. Of the control technologies evaluated, the most cost-effective is a fabric filter installed upstream of the wet flue gas desulfurization system(FF + WFGD). Halogen injection(HI) is also a cost-effective mercury-specific control strategy, although it has not yet reached commercial maturity. The sector-level analysis shows that 193 tons of mercury was removed in 2010 in China's coal-fired power sector, with annualized mercury emission control costs of 2.7 billion Chinese Yuan. Under a projected 2030 Emission Control(EC) scenario with stringent mercury limits compared to Business As Usual(BAU) scenario, the increase of selective catalytic reduction systems(SCR) and the use of HI could contribute to 39 tons of mercury removal at a cost of 3.8 billion CNY. The economic analysis presented in this paper offers insights on air pollution control technologies and practices for enhancing atmospheric mercury control that can aid decision-making in policy design and private-sector investments. 展开更多
关键词 Atmospheric mercury coal-fired power plants China COST-EFFECTIVENESS Activated carbon and halogen injection
原文传递
The R&D of Flue Gas Pollutants Deep-Removal Technology for Coal-fired Power Plants 被引量:2
18
作者 Xiao-lu Zhang 《Frontiers of Engineering Management》 2015年第4期359-363,394,共6页
The flue gas pollutants deep-removal technology(DRT) focusing on PM2.5removal is the prime method of further reducing pollutants emission from coal-fired power plants. In view of the four key technological challenges ... The flue gas pollutants deep-removal technology(DRT) focusing on PM2.5removal is the prime method of further reducing pollutants emission from coal-fired power plants. In view of the four key technological challenges in developing the DRT, studies were conducted on a series of purification technologies and the DRT was developed and successfully applied in 660 MW and 1000 MW coal-fired units. This paper analyzes the application results of the demonstration project, and proposes a roadmap for the follow-up researches and optimizations. 展开更多
关键词 coal-fired power plant pollutants emission reduction PM2 5 flue gas pollutants deep-removal
原文传递
Analysis on the Durability of Hybrid Polymer Composites for Power FGD System 被引量:1
19
作者 Zhenyu Wang Lijie Xiu +3 位作者 Enhou Han Yunhe Zhang Yongan Zhao Ming Liu 《Journal of Power and Energy Engineering》 2016年第3期1-8,共8页
The corrosion condition of flue gas desulfurization (FGD) equipment for the coal-fired power plant was defined as the strong corrosion grade. The lining system of hybrid polymer composite was used in internal cylinder... The corrosion condition of flue gas desulfurization (FGD) equipment for the coal-fired power plant was defined as the strong corrosion grade. The lining system of hybrid polymer composite was used in internal cylinder of steel chimney, and a corrosion-resistant and heat-resistant protective layer was formed on the metal surface. The corrosion-resistant and ageing-resistant properties of hybrid polymer composite prepared at low temperature after four years of practical use were investigated by differential scanning calorimeter (DSC), scanning electron microscopy (SEM) and measurement of gravimetric variation, contact angle, abrasion resistance, bonding strength and tensile strength. The properties of hybrid polymer composites prepared at 25℃ and –15℃ were comparatively analyzed in the paper. 展开更多
关键词 coal-fired power Plant Flue Gas Desulfurization Hybrid Polymer Composite DURABILITY Corrosion Resistance
下载PDF
大型燃煤发电机组低碳技术进展 被引量:4
20
作者 谭厚章 王学斌 +2 位作者 杨富鑫 邓双辉 阮仁晖 《煤炭学报》 EI CAS CSCD 北大核心 2024年第2期1052-1066,共15页
当前我国碳排放总量约110亿t,其中约40%的CO_(2)由燃煤机组产生,如何降低燃煤发电机组的碳排放是实现双碳目标的关键。针对燃煤发电机组大规模减碳技术,重点介绍低碳/零碳燃料替代技术(生物质、污泥、氢/氨等)和CCUS技术的研究进展:燃... 当前我国碳排放总量约110亿t,其中约40%的CO_(2)由燃煤机组产生,如何降低燃煤发电机组的碳排放是实现双碳目标的关键。针对燃煤发电机组大规模减碳技术,重点介绍低碳/零碳燃料替代技术(生物质、污泥、氢/氨等)和CCUS技术的研究进展:燃煤电厂耦合生物质包括直接耦合和间接耦合,但均受制于生物质原料供应和价格,生物质“种植—收割—转运—储存—预处理—燃烧”全链条控制掺烧模式可有效解决上述问题。660 MW机组掺烧试验表明,CO_(2)排放可减少77.25万t/a;市政污泥含水率高达80%,进入锅炉前需干化处理,目前蒸汽或烟气干化均存在投资运行成本高、干化后的污泥水分较大且有臭气等问题,导致掺烧比例一般低于8%。基于生物质热源的污泥炭化技术可直接在污水厂生产无臭污泥炭,热值达10.26 MJ/kg左右,电厂掺烧比例可提高至20%~30%;掺烧氢/氨燃料需解决大比例掺烧下氨逃逸和NOx排放问题,国内已开展皖能集团300 MW和国家能源集团600 MW氨煤掺烧实验,通过燃烧调控可在NOx排放略微增加的情况下实现较高的NH3燃烬率,但商业化推广还受制于氢/氨成本;燃烧前脱碳技术(IGCC电站)的商业化运行案例极为有限,由于高居不下的成本,国外多个示范项目均已停运,推动该技术商业化需解决建设成本、发电成本和设备可靠性等问题。燃烧中碳捕集包括富氧燃烧和化学链燃烧,由于空分、再循环等过程能耗,常压富氧发电效率比空气燃烧低8%~12%,从常压富氧到加压富氧可进一步提高净发电效率;我国已建成全球最大的4 MW化学链燃烧示范装置,该技术也有望应用于气化领域;燃烧后碳捕集目前以溶液吸收技术为主,固体吸附技术的再生能耗更低,但大规模商业化需要继续降低能耗和成本。 展开更多
关键词 燃煤机组 CO_(2) 低碳/零碳燃料 CCUS
下载PDF
上一页 1 2 181 下一页 到第
使用帮助 返回顶部