共查询到19条相似文献,搜索用时 93 毫秒
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生物柴油——绿色能源 总被引:5,自引:0,他引:5
介绍生物柴油的概念与特点,发展生物柴油的意义,生物柴油的生产原料与生产技术,生物柴油发展现状与前景展望,以及上海市生物柴油研究与应用现状,并提出了发展生物柴油产业急需解决的问题。 相似文献
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我国生物柴油产业发展展望 总被引:19,自引:0,他引:19
生物柴油是对汽车、环境生态和人友好的可再生能源。本文着重论述了发展生物柴油产业对我国保护生态环境、增强国家石油安全、推动农业结构调整、增加农民收入、促进农村和国家经济发展的重要作用。本文介绍了世界各国和我国生物柴油产业发展现状,并根据产业原料资源的分析预测,展望了我国生物柴油产业发展潜力和未来十年分三阶段发展的光明前景。最后,本文对产业发展提出了建议,对产业的未来充满信心。 相似文献
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国外生物柴油产业与应用状况 总被引:38,自引:1,他引:38
在查阅大量国外有关文献资料的基础上,简要、全面地介绍了国外生物柴油产业与应用状况。重点介绍了德国和美国等国家的生物柴油产业发展情况,主要涉及生物柴油的生产、应用与销售、原料生产与供应、国家计划与政策等方面。对我国发展生物柴油产业具有重要的借鉴和参考价值。 相似文献
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积极推动生物柴油的发展 总被引:4,自引:0,他引:4
积极开发生物柴油技术 ,是未来解决我国能源问题、改善环境重要措施之一。分析了世界各国及我国生物柴油的发展情况、方向及建议 ,指出用 10 a时间建成生物柴油产业大有希望。 相似文献
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生物柴油及其生产技术的进展 总被引:5,自引:0,他引:5
介绍了由可再生油脂原料衍生的环保燃料生物柴油在国内外应用现状,重点介绍了酯交换法制备生物柴油技术研究进展情况,展望了生物柴油产业在我国的发展前景。 相似文献
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简要介绍了生物柴油的主要制备方法和燃料特性,综述了生物柴油对车用柴油机的低温起动性能、动力性、经济性,排放特性以及燃烧特性影响的研究进展,阐述了近期针对生物柴油研究的新对象和新方法,并探讨了生物柴油的应用前景。 相似文献
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A. Murugesan C. Umarani R. Subramanian N. Nedunchezhian 《Renewable & Sustainable Energy Reviews》2009,13(3):653-662
The present review aims to study the prospects and opportunities of introducing vegetable oils and their derivatives as fuel in diesel engines. In our country the ratio of diesel to gasoline fuel is 7:1, depicting a highly skewed situation. Thus, it is necessary to replace fossil diesel fuel by alternative fuels. Vegetable oils present a very promising scenario of functioning as alternative fuels to fossil diesel fuel. The properties of these oils can be compared favorably with the characteristics required for internal combustion engine fuels. Fuel-related properties are reviewed and compared with those of conventional diesel fuel. Peak pressure development, heat release rate analysis, and vibration analysis of the engine are discussed in relation with the use of bio-diesel and conventional diesel fuel. Optimization of alkali-catalyzed transesterification of Pungamia pinnata oil for the production of bio-diesel is discussed. Use of bio-diesel in a conventional diesel engine results in substantial reduction in unburned hydrocarbon (UBHC), carbon monoxide (CO), particulate matters (PM) emission and oxide of nitrogen. The suitability of injection timing for diesel engine operation with vegetable oils and its blends, environmental considerations are discussed. Teardown analysis of bio-diesel B20-operated vehicle are also discussed. 相似文献
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生物柴油缸内喷雾特性的数值模拟 总被引:4,自引:0,他引:4
采用数值模拟的方法研究了4102Q柴油机燃用生物柴油的喷雾特性,探讨了喷孔结构参数、针阀开启压力、生物柴油的掺混比、发动机转速、负荷和燃油温度对喷雾的贯穿距离和索特平均直径的影响规律,并与柴油进行比较,对计算精度进行了分析.研究结果表明:2种燃料的喷雾特性随上述因素的变化规律基本一致;生物柴油-柴油混合燃料的贯穿距离和索特平均直径均随生物柴油掺混比的增大而增大;相同因素条件下,生物柴油的贯穿距离和索特平均直径均大于柴油;2种燃料喷雾特性的差别是由其不同的理化特性引起的,密度和黏度是主要因素;数值模拟的精度是足够的. 相似文献
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生物柴油燃烧过程内窥镜高速摄影试验研究 总被引:9,自引:0,他引:9
采用内窥镜直接高速摄影的方法,对燃烧柴油和生物柴油发动机的燃烧过程进行了试验研究,分析了柴油、生物柴油、不同比例的生物柴油/柴油混合燃料的着火延迟期、着火点位置、燃烧温度和燃烧速度的变化规律。研究结果表明:燃油喷射过程中,柴油的喷雾锥角大于生物柴油的喷雾锥角;生物柴油在预混燃烧阶段的燃烧速度大于柴油,其最高燃烧温度小于柴油。在相同工况下,生物柴油的燃烧终点早于柴油,燃烧持续期也小于柴油。燃烧生物柴油时,高转速工况下的燃烧终点对应的曲轴转角较低转速时有所增加,燃烧持续期对应的角度有所延长。 相似文献
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增压柴油机燃用生物柴油的排放特性 总被引:44,自引:2,他引:44
通过对比实验研究了增压柴油机燃烧生物柴油和普通柴油对发动机动力性、经济性和排放特性的影响,研究结果表明:对于实验发动机,在对喷油泵不做任何调整时,直接燃烧生物柴油对柴油机动力性的影响小于5%;无论在全负荷还是在部分负荷工况下,燃用生物柴油均能大幅度降低柴油机的排气可见污染物、PT、CO和HC排放,但会引起NOx排放量的上升,通过适当推迟喷油提前角能明显降低燃用生物柴油时发动机的COx排放,同时还能保留排气可见污染物低、PT、CO和HC排放低的优点,但对发动机动力性的影响却不大,研究表明生物柴油是理想的可再生清洁燃料。 相似文献
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在一台S195直喷柴油机上进行燃料燃烧对比试验,试验结果表明,燃用生物柴油和乙醇柴油会使柴油机的动力性有所下降,其中菜籽油生物柴油的动力性接近纯柴油燃料的动力性,乙醇柴油的动力性相对较差。生物柴油和乙醇柴油的油耗率都比纯柴油要高,生物柴油的油耗率要高于乙醇柴油。但随负荷的增大,这种差距呈下降趋势。生物柴油和乙醇柴油在较大工况范围都可以保持比纯柴油燃料较低的CO排放量。低负荷状态下改善不明显,甚至会增大;高负荷工况下,混合燃料的CO排放比纯柴油降低较多。绝大部分工况下,生物柴油和乙醇柴油燃料的HC排放都比纯柴油高。绝大部分工况下,生物柴油和乙醇柴油的NOx排放和碳烟排放都比纯柴油低,其中生物柴油的表现优于乙醇柴油。 相似文献
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Savita Dixit Sangeeta kanakraj A. Rehman 《Renewable & Sustainable Energy Reviews》2012,16(7):4415-4421
The energy crisis contributed to the development of bio-diesel production. Petroleum, charcoal and natural gas sources are limited and will be exhausted by the next century. Thus, looking for alternative source of energy is of vital importance Vegetable oils are a renewable and potentially inexhaustible source of energy with an energetic content close to diesel fuel. In recent years, bio-diesel has become more attractive as an alternative fuels for diesel engine because of its environmental benefits and it is made from renewable resource. Since edible oil demand is higher than its domestic production; there is no possibility of diverting this oil for production of bio-diesel in India. Being a tropical country, India is rich in forest resources having a wide range of trees, which yield a significant quantity of oilseeds. India is importing crude petroleum & petroleum products from Gulf countries. Indian scientists searched for an alternate to diesel fuel to preserve global environment and to withstand economical crisis. This review paper describes the production of linseed oil, its properties, composition and future potential for bio-diesel. Linseed plant contains high amount of oil in its seeds which can be converted to bio-diesel. Fatty acid compositions of linseed reported in literature are provided in this review. In this study the properties of methyl ester of linseed oil are compared with the properties of fossil diesel. The objective of this review is to give an update on the linseed plant, the production of bio-diesel from the linseed oil and research attempts to improve the technology of converting linseed oil to bio-diesel and the fuel properties of linseed bio-diesel. The technological methods that can be used to produce bio-diesel are presented together with their advantage and disadvantages. Many other areas that need to be researched on linseed oil are pointed out in this review. 相似文献