共查询到19条相似文献,搜索用时 93 毫秒
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生物质能利用技术比较与分析 总被引:8,自引:0,他引:8
生物质能的开发利用可同时解决环境污染和能源短缺问题。分析了生物质能源的特点及其利用现状,并对国内外生物质能利用技术进行了分析与比较,为生物质能利用技术的发展提供参考。 相似文献
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加速生物质能的利用和发展 总被引:4,自引:0,他引:4
郭廷杰 《能源技术(上海)》2003,24(4):152-155
文章针对可持续发展的要求,综述生物质能的利用和发展。对生物质能的特点,发达国家促进生物质能开发利用的举措,各种生物质能利用技术的发展等进行了展开,最后谈了作者的几点建议。 相似文献
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木材是人类赖以生存和发展的第一代能源,迄今第三世界尚有20亿人口仍以木材和农作物秸秆作生活燃料。我国农村每年以木材作燃料约100Mm~3。正当我们火力提倡“以煤代木”的时候,许多工业发达国家木材燃料却又东山再起。一、木材生物质能的利用再次崛起 相似文献
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生物质能发电技术分析 总被引:5,自引:0,他引:5
在不可再生能源濒临枯竭,环境污染日益加剧的今天,生物质能源替代化石能源利用的研究和开发,已成为国内外学者研究和关注的热点。介绍了国内外生物质能的主要转化利用技术,分析了生物质直接燃烧发电技术和气化发电技术,提出了符合能量梯级利用原则的生物质能发电方式,将是生物质能利用的主要形式。 相似文献
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生物质能的转化和利用技术研究 总被引:1,自引:0,他引:1
能源短缺成为影响中国未来发展的主要问题之一。生物质能的应用有助于解决我国能源短缺的问题,同时能够减小化石燃料使用带来的负面影响。文章主要介绍了生物质能的概念、生物质能利用的意义及生物质能的转化和利用技术,而且还提出实际利用过程中需要解决的问题以及未来的发展方向——以生物质为核心的多联产系统。 相似文献
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叙述了生物质能应用的问题及现有生物质能的技术发展方向,指出,生物质能利用产生的问题,提出,从长远发展来看,中国应该注重培育生物质能转化市场和发展生物质能专用设备,同时,应注重CO2固存技术的研究。 相似文献
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本文阐述了生物质能属再生能源,可保证能源的永续利用,全球再生能源的种类、贮量,介绍国际上生物质能利用的动向,以及我国生物质能的利用现状和展望。 相似文献
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生物质能作为我国农村家庭生活能源消费的重要构成单元,在当前利用过程中面临着理论和实践的双重挑战,其可持续发展受到了严重制约.解决该难题的关键之一是系统地构建农村家庭生物质能可持续利用理论基础框架.文章结合牛物质能已有相关研究,首次尝试建立了包括系统理论、生态承载力理论、效用理论、生态经济学理论、自然资源价值理论的农村家庭生物质能可持续利用的理论基础.分析了农村家庭生物质能可持续利用具有的四大内涵,即资源供给的可持续性、生态环境效应的可持续性、生物质能生产的可持续性和消费者接受的可持续性. 相似文献
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生物质能源化利用与硫循环 总被引:8,自引:0,他引:8
生物质能源化利用可以在一定程度上减少由于燃煤而带来的硫污染问题,同时又有效地处理了农村秸秆废弃物,能够取得能源利用和环境保护的双重效果。 相似文献
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Jin Hongguang Gao Lin Han Wei Li Bingyu Feng Zhibing 《Frontiers of Energy and Power Engineering in China》2007,1(1):16-31
Focusing on the traditional principle of physical energy utilization, new integration concepts for combined cooling, heating
and power (CCHP) system were identified, and corresponding systems were investigated. Furthermore, the principle of cascade
utilization of both chemical and physical energy in energy systems with the integration of chemical processes and thermal
cycles was introduced, along with a general equation describing the interrelationship among energy levels of substance, Gibbs
free energy of chemical reaction and physical energy. On the basis of this principle, a polygeneration system for power and
liquid fuel (methanol) production has been presented and investigated. This system innovatively integrates a fresh gas preparation
subsystem without composition adjustment process (NA) and a methanol synthesis subsystem with partial-recycle scheme (PR).
Meanwhile, a multi-functional energy system (MES) that consumes coal and natural gas as fuels simultaneously, and co-generates
methanol and power, has been presented. In the MES, coal and natural gas are utilized synthetically based on the method of
dual-fuel reforming, which integrates methane/steam reforming and coal combustion. Compared with conventional energy systems
that do not consider cascade utilization of chemical energy, both of these systems provide superior performance, whose energy
saving ratio can be as high as 10%–15%. With special attention paid to chemical energy utilization, the integration features
of these two systems have been revealed, and the important role that the principle of cascade utilization of both chemical
and physical energy plays in system integration has been identified. 相似文献
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天津市农村生物质能利用现状及发展趋势分析 总被引:1,自引:0,他引:1
在对天津市农村生物质能实地调研的基础上,对天津市生物质资源量及利用现状进行了分析,表明天津市发展生物质作为农村居民炊事燃料具有较大的发展空间;对当前天津的农村住宅生物质能源利用模式进行了归纳和总结,并对农村生物质能源在项目建设及管理等方面的存在问题进行了探讨。结合我国能源发展现状及天津市"十二五"发展规划,从新农村建设与能源规划的角度统筹考虑,对天津市农村生物质能的发展趋势、利用趋势及生物质发展与城乡规划布局的关系三个方面进行了分析和设想,表明生物质能在新农村建设中的积极作用。 相似文献
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This paper provides a preliminary examination of present and projected land use in Africa to estimate the potential availability of land in 2025 for use in producing biomass energy. Fifty countries are included in the analysis. Future cropland requirements are projected on the basis of average African cereal crop yield improvements since 1972, and minimum nutritional requirements are assumed to be met in 2025 without increasing imports above present absolute levels. Cropland, natural forests and other wilderness areas are excluded from consideration for biomass energy use. Woody biomass energy yields are estimated on the basis of nationally averaged precipitation, using a yield-precipitation correlation for commercial eucalyptus plantations in Brazil. The total African bioenergy production potential in 2025 is estimated to be about 18 EJ per year for a set of baseline assumptions that includes planting only 10% of the available non-crop, non-forest, non-wilderness area with biomass energy crops. A preliminary cost assessment suggests that much of this biomass could be produced for $1–2 GJ−1. A number of uncertainties in the modelling assumptions are examined through a sensitivity analysis. Despite limitations in the model used here, one robust conclusion is that Africa as a whole has a significant biophysical potential for producing biomass energy. This result suggests that more detailed country and sub-country level assessments would be worthwhile to understand better the practical prospects for future biomass energy production in Africa. 相似文献