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指出了甲醇作为重要的化学工业基础原料和清洁液体燃料,在我国的需求量逐年增加,在生产、储运过程中存在环境风险问题。分析了甲醇的理化性质,针对企业储罐区甲醇储罐可能发生的环境风险事故类型及预测评价方法进行了探讨。 相似文献
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透视我国油料能源林产业 总被引:1,自引:0,他引:1
《中国林业产业》2008,(10)
我国幅员辽阔,地域跨度大,水热资源分布各异,木本油料资源种类丰富多样,在开发林木质液体燃料方面具有明显的资源优势。由于林木质液体燃料兼具能源与环保双重功能,且石油价格大幅攀升,所以这类资源的开发利用日益受到世界各国政府的高度重视。目前,林木质液体燃料的产品形式主要是生物乙醇和生物柴油,对传统化石燃料可以进行部分替代。 相似文献
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日本已研究出一种利用废木材制造液体燃料的新方法.用这种方法可将间伐木和木屑等废料,在水存的条件下经过热化学处理,制造与C重油一样的液体燃料. 首先将碱性水溶液添加到木材的粉末 相似文献
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甲醇是白酒中的有害成分。甲醇的气味和酒精一样,却不如酒精刺激性大,与酒精混合不易区别。它在人体内会累积,能引起慢性中毒,因此,甲醇含量的准确检测至关重要。本文结合实际对白酒中的甲醇含量化验检测若干问题进行了研究。 相似文献
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Liquefaction of beech wood in various supercritical alcohols 总被引:1,自引:0,他引:1
The liquefaction of Japanese beech (Fagus crenata Blume) was studied with various straight-chain alcohols in subcritical and supercritical states using a batch-type reaction
vessel to obtain liquid fuel from lignocellulosics. Under the reaction condition of 270°C, beech wood was liquefied to some
extent in all alcohols with about 50%–65% insoluble residue left after treatment for 30min. Under the condition of 350°C,
however, more than 90% of wood was decomposed and liquefied in all alcohols. Alcohols with longer alkyl chains liquefied lignocellulosics
in shorter reaction times. Because many kinds of alcohols, such as methanol and ethanol, can be produced from biomass, 100%
biomass-based liquid fuel can be prepared by supercritical alcohol technology when using such bioalcohols.
This study was presented in part at the 55th Annual Meeting of the Japan Wood Research Society, Kyoto, Japan, March 16–18,
2005 相似文献
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分析甲醇柴油的十六烷值、密度、运动粘度、腐蚀性和馏程等性质。采用数值计算的方法研究不同甲醇掺混比例对混合燃料十六烷值的影响;开展燃料的蒸馏特性试验、粘温特性试验,研究不同甲醇掺混比例(M0、M10、M20)对混合燃料的蒸馏特性、粘温特性的影响,初步探讨柴油中甲醇含量的混合燃料理化参数的影响规律。 相似文献
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对醇类燃料特性及其应用现状的分析研究表明,低浓度醇类燃料适合在不改变发动机结构的情况下使用;结合二冲程小型发动机的特点和使用情况,得出低浓度醇类燃料适合作为其替代燃料;通过对醇类燃料作为二冲程小型发动机燃料的可行性分析可知,燃烧醇类混合燃料可提高二冲程小型发动机的能量利用率、减少其尾气排放和降低排放温度。 相似文献
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Eucalyptus globulus Labill. seedlings grown under field conditions in Portugal were watered either daily (control) or every 6 days (drought-treated). Relative to those of control plants, rates of leaf production and leaf biomass accumulation were reduced by almost half in drought-treated plants. However, whereas expansion of new leaves on control plants slowed toward the end of the 30 day experiment, expansion of leaves of the same age on drought-treated plants accelerated as a change in weather conditions resulted in midday plant water potentials above -3.0 MPa. In plants that were left unwatered until they wilted and were then watered daily, expansion of the fifth leaf pair from the apex was slower than that of the same pair of leaves of plants watered daily throughout; but it continued for about twice as long and resulted in the same final leaf area. Drought treatment also caused a substantial reduction in the rate of leaf production, which, in part, accounted for the effect of drought on leaf biomass production. In a greenhouse study, witholding water for 15 days had only a slight effect on the length or width of adaxial epidermal cells, and the effect was quickly reversed on rewatering. 相似文献
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热载体输送是生物燃油生产过程本文提出了自行设计的几种高温热载体输送装置,分析了各自方案的特点,并对存在的问题进行探讨. 相似文献
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To gain insight into the limitations imposed by a typical Mediterranean-climate summer drought on the uptake of carbon and ozone in the ponderosa pine (Pinus ponderosa Dougl. ex Laws.) ecosystem, we compared diurnal trends in leaf physiology of young trees in a watered and a control plot located in the Sierra Nevada Mountains, CA, USA (Blodgett Forest, 38 degrees 53' N, 120 degrees 37' W, 1315 m elevation). Predawn water potential of trees in the watered plot remained above -0.3 MPa throughout the growing season, whereas it dropped in the control plot from -0.24 to -0.52 MPa between late May and mid-August. Photosynthesis and stomatal conductance of trees in the watered plot were relatively insensitive to atmospheric vapor pressure deficit (VPD), whereas gas exchange of trees in the control plot varied with changes in soil water, VPD and temperature. Although the 1998 growing season was abnormally wet, we saw a pronounced drought effect at the control site. Over the 2 months following the onset of watering, carbon and ozone uptake were measured on three days at widely spaced intervals. Carbon uptake per unit leaf area by 1-year-old foliage of trees in the control plot was 39, 35 and 30% less, respectively, than in the watered plot, and estimated ozone deposition per unit leaf area (ozone concentration times stomatal conductance) was 36, 46 and 41% less. 相似文献
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生物质燃油的应用前景 总被引:2,自引:0,他引:2
从废弃生物质资源利用现状、生物质制燃油的转化技术、生物燃油生产成本预算、生物燃油的市场等方面阐述了应用生物质能的可行性,表明生物质燃油具有广阔的应用前景. 相似文献