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国际碳交易给节能减排带来的机遇 总被引:2,自引:0,他引:2
回顾了当前国际温室气体减排贸易市场形成的背景,介绍了<京都议定书>气候贸易体系,比较了清洁发展机制和地区性气候贸易体系这两个与我国企业直接相关的市场平台,指出参与国际温室气体减排贸易可给中国节能减排企业增加一个经济增长点,以及国内企业参与国际温室气体减排贸易应当做好的三个准备.帮助企业和相关金融机构认识新的历史机遇,对做好温室气体减排贸易具有重要意义. 相似文献
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生物质种类不同,转化为运输燃料的途径也是多种多样,生命周期排放的温室气体和能耗也不相同。总结对比主要生物质转化途径的全生命周期分析(LCA)结果,有助于明确需要进一步改进的技术难题和方向。生物质转化为醇类燃料时,使用E85比使用传统汽油的碳排放明显下降,纤维素生化转化途径排放的二氧化碳当量值约为传统汽油的0.2~0.7倍,热化学途径约为传统汽油的0.6~0.9倍,玉米干法为传统汽油的0.8~1倍。油脂类生物质转化为酯类燃料时,生物柴油减排温室气体的效果,动物油脂地沟油、棕榈油豆油、椰子油菜籽油。动物油脂、地沟油生产生物柴油可减排温室气体70%~90%,以植物为原料的生物柴油可减排10%~90%。生物质转化为烃类燃料时,菜籽油基喷气燃料可减排温室气体13%~55%,F-T合成油比油脂加氢具有更好的减排效果,BTL通常可减排80%以上的温室气体,CBTL的减排效果与掺入生物质的比例有关,热解汽柴油的温室气体减排率为58%~70%。对于微藻生物燃料工艺过程,在微藻产率和含油量不太低的情况下,池子系统的温室气体排放低于石油柴油。 相似文献
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中国农村能源温室气体主要减排技术评价及潜力分析 总被引:1,自引:0,他引:1
农村能源减排技术是优化能源结构,减少温室气体排放的重要途径之一,有利于实现国家温室气体减排的目标。文章综合分析评价了农村能源温室气体减排技术,计算减排效果并估算未来的减排潜力。结果表明,2009年中国主要农村能源技术温室气体减排量为8 529万tCO2,测算到2020年,中国农村能源温室气体的减排潜力约为2.97亿t CO2。农村户用沼气、生物质固体成型燃料、太阳能热利用等农村节能减排技术已基本成熟,实现了产业化应用,且减排潜力较大,是未来推广的重点。 相似文献
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气候变化是当前人类面临的严重的全球性环境问题,温室气体排放是引起全球气候变化的一个重要原因。介绍了《京都议定书》为发达国家实现温室气体减排目标提供的低成本的替代性法律机制,指出了这些机制存在的不足之处.为在2012年之后的后京都时代进一步完善温室气体减排法律机制提出了建议。 相似文献
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<正>2005年2月16日,《京都议定书》正式生效,为了促进各国完成温室气体减排目标,议定书规定可采用绿色开发机制,促使发达国家和发展中国家共同减排温室气体。买家在"限量与贸易"体制下购买由管理者制定、分配(或拍卖)的减排配额,买主向可减低温室气体排放的项目购买减排额。清洁发展机制(CDM)双赢机制的出现,在发达国家和发展中国家间开启了一个巨大的碳交易市场。从碳市场建立的法律基础上看,碳交易市场可分为强制交易市场和自愿交易市场。如果一个国家或地区政府法律明 相似文献
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沼气发酵猪粪管理系统对温室气体排放的影响 总被引:1,自引:0,他引:1
基于生命周期清单分析以及清洁发展机制,引入"碳足迹"概念,对我国散养猪以及规模化养猪场引入沼气发酵系统后猪粪管理系统温室气体排放及减排进行了估算。农户散养猪粪处理系统中,12 m3沼气池厌氧发酵过程碳足迹为223.40 kg CO2e/a,沼气代替原煤燃烧减少444.33 kg CO2e/a温室气体,沼气发酵净减少220.93 kg CO2e/a温室气体,我国散养生猪产生的猪粪以此沼气池发酵可减少温室气体20 984.62 Gg CO2e/a;分析运行规模约1 000 m3大型沼气工程的碳足迹,保守估计为2 835.32 t CO2e/a,运行沼气工程替代煤炭以及减少猪粪排放的温室气体共约2 914.23 t CO2e/a,故沼气工程年减少温室气体78.91 t CO2e,该项目共可减排1 578.20 t CO2e。在猪粪管理系统中采用沼气发酵系统可以更好地促进温室气体减排的进行。 相似文献
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世界气候变暖形势严峻 二氧化碳减排工作势在必行 总被引:6,自引:0,他引:6
温室气体大量排放而引起的全球气候变暖问题日趋严峻,由此导致的空气污染和温室效应正在严重地威胁着人类赖以生存的环境。为减缓气候变化,就要减少温室气体排放和增加温室气体的吸收,各个国家相继采取积极有效措施。地质埋存CO2是避免气候变化的有效途径,结合气候变暖存在问题,中国政府批准国家973项目——开展温室气体提高石油采收率的资源化利用及地下埋存研究,提出二氧化碳减排发展对策,必将为全球资源和环境的高水平、高效益开发和可持续发展提供理论及实践依据。 相似文献
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S. Lee J. Kim J. Lee 《Energy Sources, Part A: Recovery, Utilization, and Environmental Effects》2016,38(9):1262-1268
Greenhouse gas emissions of the nation should be precisely assessed in order to effectively tackle the problems stemming from climate changes. To do so, country-specific data that reflect a nation’s distinct characteristics must be applied to more precisely assess greenhouse gas emissions. In this research, carbon emission factors were assessed for emission sources making up over 53% of the domestic anthracite consumption with calorific values of fuels and elementary analysis. Furthermore, oxidation rates were assessed based on measurement results of unburned carbon produced from tested power plants to calculate CO2 emission factors. Ultimately, the CO2 emission factor was calculated at 106,747 kg/TJ, about 9% higher than the anthracite emission factor presented by the Intergovernmental Panel on Climate Control. Such differences are assumed to mainly come from disparities of anthracite properties along with combustion technology and differences of oxidation rates depending on the combustion conditions. Therefore, continued research on a wide variety of fuels and energy consumption facilities should be conducted in order to establish country-specific data, which will help more accurately assess greenhouse gas emissions and subsequently will lead to reliable greenhouse gas reduction goals. 相似文献
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Eui-Chan Jeon Soojeong Myeong Jae-Whan Sa Jinsu Kim Jae-Hak Jeong 《Applied Energy》2010,87(1):205-210
Accurate estimation of greenhouse gas emissions is essential for developing an appropriate strategy to mitigate global warming. This study examined the characteristics of greenhouse gas emission from power plants, a major greenhouse gas source in Korea. The power plants examined use bituminous coal, anthracite, and sub-bituminous coal as fuel. The CO2 concentration from power plants was measured using GC–FID with methanizer. The amount of carbon, hydrogen, and calorific values in the input fuel was measured using an elemental analyzer and calorimeter. For fuel analysis, CO2 emission factors for anthracite, bituminous coal, and sub-bituminous coal were 108.9, 88.4, and 97.9 Mg/kJ, respectively. The emission factors developed in this study were compared with those for IPCC. The results showed that CO2 emission was 10.8% higher for anthracite, 5.5% lower for bituminous coal, and 1.9% higher for sub-bituminous coal than the IPCC figures. 相似文献
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To investigate the greenhouse gases emission from enteric fermentation and manure management of livestock and poultry industry in China, the present study presents a systematic estimation of methane and nitrous oxide emission during 1949–2003, based on the local measurement and IPCC guidelines. As far as greenhouse gases emittion is concerned among livestock swine is found to hold major position followed by goat and sheep, while among poultry chicken has the major place and is followed by duck and geese. Methane emission from enteric fermentation is estimated to have increased from 3.04 Tg in 1949 to 10.13 Tg in 2003, an averaged annual growth rate of 2.2%, and methane emission from manure management has increased from 0.16 Tg in 1949 to 1.06 Tg in 2003, an annual growth rate of 3.5%, while nitrous oxide emission from manure management has increased from 47.76 to 241.2 Gg in 2003, with an annual growth rate of 3.0%. The total greenhouse gas emission has increased from 82.01 Tg CO2 Eq. in 1949 to 309.76 Tg CO2 Eq. in 2003, an annual growth rate of 2.4%. The estimation of livestock methane and nitrous oxide emissions in China from 1949 to 2003 is shown to be consistent with a linear growth model, and the reduction of greenhouse gas emission is thus considered an urgent and arduous task for the Chinese livestock industry. 相似文献