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Impact of “ultra low emission” technology of coal-fired power on PM

Xiao LIU, Zhilin LIU, Weidong JIAO, Xuan LI, Jintai LIN, Anthony KU

《能源前沿(英文)》 2021年 第15卷 第1期   页码 235-239 doi: 10.1007/s11708-017-0518-y

摘要: In response to severe haze pollution, the Chinese government has announced a series of policies focusing on controlling emissions from coal consumption. “Ultra-low emission” (ULE) technologies have the potential to dramatically reduce emissions from coal-fired power plants, and have been deployed at some facilities in recent years. This paper estimated the potential environmental benefits of the widespread adoption of ULE in the Jing-Jin-Ji Region. Atmospheric modeling scenarios were analyzed for three cases: a “standard” scenario assuming no ULE deployment, a “best case” scenario assuming complete adoption of ULE across all power plants in the region, and a “natural gas” scenario, assuming emissions factors consistent with natural gas-fired power generation. The simulations show that the widespread adoption of ULE technologies can be an effective and economically competitive option for reducing the impacts of coal-fired power generation on air quality.

关键词: air quality     atmospheric model     coal     Jing-Jin-Ji Region     PM2.5     ultra-low emissions    

Practice on Ultra-low Emission and Energy Efficient Technologies in Coal-fired Power Plants

Yin-biao Chen,Yi Zhang,Wen Ling

《工程管理前沿(英文)》 2016年 第3卷 第4期   页码 377-383 doi: 10.15302/J-FEM-2016045

摘要: Restructuring of China’s energy mix is accelerating due to factors such as energy security, economic cost, climate change and environmental pressure. Efficient and clean utilization of coal-generated power therefore plays an increasingly important role in solving energy and environmental problems in China. Coal-fired power plants, with Shenhua Guohua Sanhe as one of the pioneers, followed trend of this era and adopted multiple ultra-low emission and energy efficient technologies, striving to be an industry leader in environmental protection, profitability and innovation. As a result, coal-fired power plants have seen ultra-low emissions of air pollutants and record-high energy efficiency, opening up a new era of more efficient and cleaner coal generation. By the end of 2015, Shenhua Group had had 45 ultra-low emission coal units, providing strong support for implementing of the national policy on ultra-low emission and energy efficient retrofit of coal-fired power plants across China.

关键词: coal     power generation     ultra-low emission     energy efficiency    

Machine of testing the ceramic’s bending strength properties at high temperature and ultra-low

Jianhui ZHANG, Fang YE, Onuki AKIYOSHI,

《机械工程前沿(英文)》 2010年 第5卷 第3期   页码 289-293 doi: 10.1007/s11465-010-0094-x

摘要: According to the established rules for testing ceramic’s bending strength, the falling velocity of the pressure head of the machine should be more than 0.5 mm/min. For the machine of testing the ceramic’s bending strength properties, most designs adopt the lowest falling velocity as 0.5 mm/min. In the fields such as aerospace and deep-ocean exploration, the utilization of ceramic materials that work at normal temperature, low temperature, or even high temperature and bend at an ultra-low velocity is increasing; thus, the intense requirements for the machine of testing the ceramic’s bending strength properties at high temperature and ultra-low speed (MTCBSP) and its experimental basis are put forward. This research developed an MTCBSP suitable for normal temperature and high temperature with the lowest falling velocity of 0.05 mm/min, and manufactured a drive reducer for ultra-low speed and high-temperature working condition. In the test, equipment includes a high-temperature furnace, bending die for four-point bending, and protection system of inert gas, which was placed in the high-temperature furnace to prevent the ceramic sample from being oxidized to diminish its effects. The results show that the lowest falling velocity of the pressure head of this new machine is 0.05 mm/min, and the mechanical properties of silica glasses are noticeably different at the same high temperature and the different falling velocities of 0.5 mm/min and 0.05 mm/min.

关键词: piezoelectricity     value     pump     experiment         E”     -shaped value    

煤炭清洁发电技术进展与前景

岑可法,倪明江,高翔,骆仲泱,王智化,郑成航

《中国工程科学》 2015年 第17卷 第9期   页码 49-55

摘要:

近年来,我国大气复合污染问题日益突出,燃煤是造成大气污染的主要原因之一,我国电力行业耗煤量约占全国耗煤总量的一半,实现燃煤电厂烟气污染物高效控制是重中之重。本文介绍了我国煤炭清洁发电实现超低排放的最新进展及未来发展前景。通过理论研究、技术研发及集成应用,形成了符合我国国情的燃煤烟气污染物超低排放技术路线,建立了超低排放清洁环保岛,实现了污染物排放优于天然气机组排放标准限值,为我国大气污染防治特别是高用能密度区域的污染物减排提供了一条重要出路。研究综述了近年来我国超低排放技术的示范应用情况,通过费效分析表明超低排放可实现污染物大幅度减排,具有良好的环境、经济和社会效益。未来,我国燃煤电厂还将进一步发展烟气污染物深度脱除技术及二氧化碳捕集技术,最终实现燃煤烟气污染物的近零排放,为建设全世界最清洁的燃煤电厂奠定坚实的技术基础。

关键词: 煤炭;高用能密度;大气污染;超低排放;清洁发电    

Development and technical progress in large-scale circulating fluidized bed boiler in China

Zhong HUANG, Lei DENG, Defu CHE

《能源前沿(英文)》 2020年 第14卷 第4期   页码 699-714 doi: 10.1007/s11708-020-0666-3

摘要: Circulating fluidized bed (CFB) boilers has realized the clean and efficient utilization of inferior coal like gangue and coal slime, high sulfur coal, anthracite, petroleum coke, oil shale and other resources. As a country with the largest amount of CFB boilers and the largest installed capacity in the world, China has 440 100–600 MW CFB boilers with a total capacity of 82.29 GW , including 227 units of 135 MW , 95 units of 300 MW , and 24 supercritical units. The statistics of typical 100–300 MW CFB boilers showed that the average number of unplanned shut-down was only 0.37 times per year, among which the 135 MW was 0.26 times per year and 300 MW was 0.46 times per year. The auxiliary power ratio of some 300 MW CFB boilers based on flow-pattern reconstruction can be reduced to about 4%, which is closed to the same level of pulverized coal (PC) boilers. This paper summarizes the development process and application status of China’s large-scale CFB boilers, analyzes the characteristics and technical performance of the iconic units, and introduces solutions to the problems such as water wall wear and bottom ash cooling.

关键词: CFB boiler     installed capacity     reliability     economics     ultra-low emission     China    

Correlation between carbon emissions and energy structure –Reliability analysis of low carbon target

Ben HUA

《能源前沿(英文)》 2011年 第5卷 第2期   页码 214-220 doi: 10.1007/s11708-010-0133-7

摘要: The influence of energy intensity on carbon intensity depends upon the fraction of energy mixes with high carbon emissions in the total energy mixes . The correlation of with a variety of primary energy mix fractions and technology advances such as CCS and CCHP is analyzed and deduced. Taking the long-term carbon reduction target in 2050 settled upon by the Copenhagen Agreement and the mid-term target suggested by the “450 Scenes Program” of the International Energy Agency (IEA) as constraints, the new pattern of the energy transition of the world in 2020, 2030, and 2050 are estimated and figured out. The peak value of energy consumption will lag behind the peak value of carbon emissions; the world energy structure shifting point will be in 2020–2025. Estimates show that China’s mid-2020 and long-term targets of energy-saving and emission reduction announced by the Chinese government might be achieved.

关键词: correlation     carbon emissions     energy consumption     high carbon emissions energy mix     target of emission reduction     reliability    

Operating characteristic analysis on the ultra-thin low temperature floor-heating system

Hualing ZHANG, Xiaopeng SONG

《结构与土木工程前沿(英文)》 2013年 第7卷 第2期   页码 127-132 doi: 10.1007/s11709-013-0200-3

摘要: Prefabricated ultra-thin radiant heating panel, as a new heating terminal type, is becoming a highlight in Yangtze River Valley area, China recently. However, there is a lack of operating characteristic research in this region, especially the energy consumption and operating mode are even less. To obtain these data, a heating system was set up in a duplex house in Chongqing. The test results show that the floor heating system could almost satisfy thermal comfort requirement at supply water temperature 45°C. But the preheating time was up to 4.5 h which was 1 h longer than that at supply water temperature 50°C. Meanwhile, the energy consumption at supply water temperature 50°C increased 0.10 Nm /h, and the operating efficiency decrease about 2.6% compared to those at water temperature 45°C. Considering both the thermal lag and operating efficiency, a reasonable suggestion was proposed in this paper. That was, the standard families which just stay home at night should adopt the interim mode of partial room with part time. And the supply water temperature should be properly raised during the preheating period and lowered down in the steady heating stage.

关键词: ultra-thin floor heating panel     the preheating time     thermal comfort     energy saving    

Impact of “ultra low emission” technology of coal-fired power on PM

Xiao LIU, Zhilin LIU, Weidong JIAO, Xuan LI, Anthony KU

《能源前沿(英文)》 2021年 第15卷 第2期   页码 564-564 doi: 10.1007/s11708-018-0551-5

Fuel poverty and low carbon emissions: a comparative study of the feasibility of the hybrid renewable

《能源前沿(英文)》 2022年 第16卷 第2期   页码 336-356 doi: 10.1007/s11708-021-0748-x

摘要: Fuel poverty is most prevalent in North East England with 14.4% of fuel poor households in Newcastle upon Tyne. The aim of this paper was to identify a grid connected renewable energy system coupled with natural gas reciprocating combined heat and power unit, that is cost-effective and technically feasible with a potential to generate a profit from selling energy excess to the grid to help alleviate fuel poverty. The system was also aimed at low carbon emissions. Fourteen models were designed and optimized with the aid of the HOMER Pro software. Models were compared with respect to their economic, technical, and environmental performance. A solution was proposed where restrictions were placed on the size of renewable energy components. This configuration consists of 150 kW CHP, 300 kW PV cells, and 30 kW wind turbines. The renewable fraction is 5.10% and the system yields a carbon saving of 7.9% in comparison with conventional systems. The initial capital investment is $1.24 million which enables the system to have grid sales of 582689 kWh/a. A conservative calculation determined that 40% of the sales can be used to reduce the energy cost of fuel poor households by $706 per annum. This solution has the potential to eliminate fuel poverty at the site analyzed.

关键词: greenhouse gas control     low carbon target     grid connected     renewable fraction     fuel poverty     combined heat and power     HOMER Pro    

特低渗透油田提压注水效果探讨与实践

张洪亮

《中国工程科学》 2012年 第14卷 第4期   页码 62-64

摘要:

大庆西部外围地区特低渗透扶余油层具有埋藏深、厚度薄、砂体零散的特点,针对首次注水开发的特低渗透油田注水井吸水能力差、难以有效开发动用的实际,在搞清该区块微观特征的基础上,为确保特低渗透储层达到建立有效驱替,“注够水、注好水”的目的,经过反复理论研究和论证,提出了单井增压注水试验,现场应用后注水井能够完成配注,周围油井明显见到增油效果,实现了特低渗透储层有效驱替。利用无源微地震和同位素监测资料分析,改善了吸水状况,缓解了层间矛盾,储层动用程度得到提高。随注水压力升高降低,注水波及区范围随之升高、降低,增压注

关键词: 增压注水     无源微地震     特低渗透油田     波及系数     有效驱替    

STRATEGIES FOR A LOW-CARBON FOOD SYSTEM IN CHINA

《农业科学与工程前沿(英文)》 2023年 第10卷 第2期   页码 167-182 doi: 10.15302/J-FASE-2023494

摘要:

● A provincial stage-specific greenhouse gas (GHG) accounting model for the Chinese food system was developed.

关键词: greenhouse gas emissions     food system     life cycle assessment     environmental input-output analysis     mitigation strategies    

关于低碳发展的认识和思考

傅志寰,牛田瑛

《中国工程科学》 2010年 第12卷 第6期   页码 12-17

摘要:

气候变化给全人类带来了灾害,彰显低碳发展的必要性和紧迫性。笔者分析了发达国家和发展中国家采取的发展低碳经济措施,阐述了我国在节能减排和发展低碳经济方面做出的巨大努力。文章认为合理解决气候变化问题,就要坚持“共同但有区别的责任”,以人均累计排放量分配各国的责任。我国实现低碳发展有很多制约因素,但我国需要走低碳发展的道路。文章提出了中国发展低碳经济的若干建议,并强调要以正确的“发展理念”为指导,迎接低碳发展的挑战。

关键词: 低碳经济     气候变化     人均累计排放     发展理念    

微水头资源开发与发电装置研究现状及趋势

张玉全,郑源,孙科,杨春霞,罗红英

《中国工程科学》 2018年 第20卷 第3期   页码 90-95 doi: 10.15302/J-SSCAE-2018.03.013

摘要:

我国水能资源丰富,开发水力发电技术是增加可再生能源供应、优化能源结构、缓解环境问题的优先选择。本文着眼于我国丰富的微水头资源,梳理河流、运河、水库、电厂尾水、管道供水、城市废水、海洋新能源等微水头资源需求和应用特点,总结适合开阔流域和封闭流域特点的两型微水头水力发电水轮机,对形成动势能结合型微水头水轮机设计方法和研究其流动特征和机理提供基础。介绍了微水头资源评估和水力发电水轮机研究的趋势,并对今后研究方向提出了建议。

关键词: 微水头资源     水力发电水轮机     开阔流域     封闭流域    

面向未来低碳道路养护的超薄罩面功能性研究综述 Review

郭猛, 张瑞, 杜修力, 刘鹏飞

《工程(英文)》 2024年 第32卷 第1期   页码 83-99 doi: 10.1016/j.eng.2023.03.020

摘要:

截至2021年,中国公路养护总里程达到525万公里。超薄罩面作为最常用的路面养护技术之一,可以显著提高路面的经济效益和环境效益。为了促进超薄罩面的低碳发展,本文主要研究了超薄罩面几种功能性的作用机理及影响因素。首先,对超薄罩面的抗滑性能、降噪性能、抗车辙性能和抗裂性能进行了评价。结果表明,优质集料可使超薄罩面的抗滑和抗车辙性能提高5 %~20 %。优化后的级配及改性胶结料可将超薄罩面的噪音降低0.4~6.0 dB。高粘度改性胶结料可使超薄罩面混合料的抗车辙性能提高10 %~130 %。玄武岩纤维可使超薄罩面的抗裂性提升20 %以上。由于超薄罩面具有更薄的厚度及更好的道路性能,其基于性能的工程成本与传统罩面相比,可降低30 %~40 %。其次,研究了超薄罩面的几种环保功能,包括融雪除冰、废气降解和路面降温。由于超薄罩面的厚度较薄,有利于氯化物融雪材料向路表的扩散。因此,自融雪超薄罩面的融雪效果较好。此外,含有光催化材料的超薄罩面混合料可以分解20 %~50 %的尾气污染物。彩色超薄罩面最高能够将路面温度降低8.1 ℃。而含有热阻材料的超薄罩面的上下表面温差最高可达12.8 ℃。此外,本文总结了功能型超薄罩面在全世界的一些典型工程应用。本综述有助于研究人员更好地理解超薄罩面的功能性,同时可促进未来多功能低碳道路养护的实现。

关键词: 道路养护     超薄罩面     融雪除冰     尾气降解     路面降温     低碳    

Key technical innovations in the construction of Baihetan Hydropower Station Project

《工程管理前沿(英文)》 2023年 第10卷 第2期   页码 367-372 doi: 10.1007/s42524-023-0253-5

摘要: Key technical innovations in the construction of Baihetan Hydropower Station Project

关键词: ultra-high arch dam     columnar jointed basalt     low-heat cement concrete     temperature controlled crack prevention     million-kilowatt unit     intelligent construction    

标题 作者 时间 类型 操作

Impact of “ultra low emission” technology of coal-fired power on PM

Xiao LIU, Zhilin LIU, Weidong JIAO, Xuan LI, Jintai LIN, Anthony KU

期刊论文

Practice on Ultra-low Emission and Energy Efficient Technologies in Coal-fired Power Plants

Yin-biao Chen,Yi Zhang,Wen Ling

期刊论文

Machine of testing the ceramic’s bending strength properties at high temperature and ultra-low

Jianhui ZHANG, Fang YE, Onuki AKIYOSHI,

期刊论文

煤炭清洁发电技术进展与前景

岑可法,倪明江,高翔,骆仲泱,王智化,郑成航

期刊论文

Development and technical progress in large-scale circulating fluidized bed boiler in China

Zhong HUANG, Lei DENG, Defu CHE

期刊论文

Correlation between carbon emissions and energy structure –Reliability analysis of low carbon target

Ben HUA

期刊论文

Operating characteristic analysis on the ultra-thin low temperature floor-heating system

Hualing ZHANG, Xiaopeng SONG

期刊论文

Impact of “ultra low emission” technology of coal-fired power on PM

Xiao LIU, Zhilin LIU, Weidong JIAO, Xuan LI, Anthony KU

期刊论文

Fuel poverty and low carbon emissions: a comparative study of the feasibility of the hybrid renewable

期刊论文

特低渗透油田提压注水效果探讨与实践

张洪亮

期刊论文

STRATEGIES FOR A LOW-CARBON FOOD SYSTEM IN CHINA

期刊论文

关于低碳发展的认识和思考

傅志寰,牛田瑛

期刊论文

微水头资源开发与发电装置研究现状及趋势

张玉全,郑源,孙科,杨春霞,罗红英

期刊论文

面向未来低碳道路养护的超薄罩面功能性研究综述

郭猛, 张瑞, 杜修力, 刘鹏飞

期刊论文

Key technical innovations in the construction of Baihetan Hydropower Station Project

期刊论文