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木薯燃料乙醇产业发展状况和趋势 总被引:2,自引:0,他引:2
通过回顾中粮集团木薯燃料乙醇项目的进程,重点介绍了木薯燃料乙醇产业发展现状和中粮木薯燃料乙醇装置技术特点。提出了在低碳经济的背景下,木薯燃料乙醇产业发展趋势。 相似文献
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我国非粮燃料乙醇生产技术进展 总被引:6,自引:1,他引:5
对我国薯类、甜高粱和纤维素等非粮食作物生产燃料乙醇生产技术的发展现状及存在的问题进行了综述.论述了TUS薯类燃料乙醇生产技术的特点,介绍了广西中粮生物质能源公司"年产20万t木薯燃料乙醇生产示范装置"实际运行状况,并对非粮燃料乙醇产业的健康持续发展提出了建议. 相似文献
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以甘蔗为原料生产燃料乙醇的技术经济分析 总被引:6,自引:0,他引:6
甘蔗燃料乙醇产业的发展背景是国家基于石油替代战略而在2 001年启动的"变性燃料乙醇"和"车用乙醇汽油"推广计划.目前燃料乙醇发展的突出障碍是生产成本较高,因此需要国家的大量补贴.本文借鉴巴西利用甘蔗发展低成本燃料乙醇的经验,对中国用甘蔗生产燃料乙醇的技术成熟度、市场竞争力和环境影响进行了分析,并得出以下结论:中国用甘蔗生产燃料乙醇在工艺和设备上不存在根本性、长期性的障碍;在目前的燃料乙醇和食糖价格下,甘蔗燃料乙醇的生产具有比较优势;甘蔗燃料乙醇生产中对环境的负面影响在现有的环保技术条件下可以得到克服,并且还将促进温室气体减排.因此,国家"车用乙醇汽油"计划的下一步推广应该充分考虑到广东、广西、福建等甘蔗优势省份,以甘蔗燃料乙醇产业的发展来促进农业和能源的可持续发展. 相似文献
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发展燃料乙醇是人类应对石油等化石燃料日渐枯竭及汽车尾气等环境问题的积极举措,也被许多国家视为维系能源战略安全和发展低碳经济的必然选择。因此,全球燃料乙醇产量在过去的几十年中急剧增加。但是,废水处理的问题与此同时也日益加剧,目前已成为阻碍乙醇工业发展的限制因素。为了实现燃料乙醇产业的可持续发展,开发新型的废水处理工艺具有重要意义。国内外研究者开发出了许多乙醇废水处理技术,包括蒸发、回用、单细胞蛋白(Single cell protein,SCP)/生物制品生产、耕地灌溉、厌氧消化和乙醇-沼气双发酵耦联工艺等技术。作者对这些技术进行了系统地总结,阐述了这些技术的原理、特点和优缺点,以期为乙醇废水处理的深入研究提供参考。 相似文献
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发酵酒精是应用广泛、产量最大的可再生能源,燃料酒精已经成为石油的部分替代品.酶制剂的应用促进了淀粉质原料的酒精生产的技术进步.新型酶制剂在酒精生产中的应用改善了酒精生产的工艺,提高了原料的利用率.随着科技的发展,越来越多的新型酶制剂将会应用到酒精工业中.介绍了酒精的基本生产工艺和相关的酶制剂的种类与性能,以及新型酶制剂的技术特性. 相似文献
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Armando Burgos‐Hernndez Ralph L Price Karen Jorgensen‐Kornman Rebeca Lpez‐García Henry Njapau Douglas L Park 《Journal of the science of food and agriculture》2002,82(5):546-552
The decontamination of aflatoxin B1(AFB1)‐contaminated corn, which is required if the corn is to be suitable for alternative use, by an ammoniation–fermentation integrated process was studied. This process could be used for the production of fuel ethanol from aflatoxin‐containing corn. Different concentrations (0.25, 0.50, 1.00, 1.5 and 2.0% w/w) of ammonium persulphate were tested in the detoxification of AFB1‐contaminated corn during fermentation. In order to increase the decontamination of corn, 0.5 and 1.0% (w/w) azodicarbonamide, benzoyl peroxide and hydrogen peroxide were tested. Peroxides were added at three different stages of the fermentation process: liquefaction, saccharification and fermentation. Levels of AFB1 and ethanol were determined after each fermentation process. Treated corn was tested for mutagenic potential using the Ames test with TA100 tester strain and pure AFB1 as positive control. Addition of 2.0% (w/w) ammonium persulphate caused the highest level of decontamination without affecting ethanol production. Addition of peroxides did not significantly (P < 0.05) increase ethanol production or significantly (P < 0.05) improve the decontamination process. The best processes for decontamination of corn and for ethanol production included the addition of 2.0% (w/w) ammonium persulphate for both and of 1.0 and 0.5% (w/w) benzoyl peroxide respectively. All treated corn samples showed no mutagenic potential. Possible industrial use of these processes is discussed. © 2002 Society of Chemical Industry 相似文献
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玉米秸秆经过预处理、酶水解、发酵可生产燃料乙醇,但其自身具有的木质纤维素紧密结构使得酶水解效率很低,导致乙醇产量低。因此,采用适当的方法对玉米秸秆进行预处理,破坏秸秆原有的纤维结构,提高酶水解效率和可利用性。本文对当前国内外玉米秸秆各种预处理最新方法进行了综述,同时对每种预处理方法的优缺点进行了分析,为玉米秸秆发酵生产燃料乙醇预处理方式的选择提供参考。 相似文献
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Discussions of alternative fuel and propulsion technologies for transportation often overlook the infrastructure required to make these options practical and cost-effective. We estimate ethanol production facility locations and use a linear optimization model to consider the economic costs of distributing various ethanol fuel blends to all metropolitan areas in the United States. Fuel options include corn-based E5 (5% ethanol, 95% gasoline) to E16 from corn and switchgrass, as short-term substitutes for petroleum-based fuel. Our estimates of 1-2 cents per L of ethanol blend for downstream rail or truck transportation remain a relatively small fraction of total fuel cost. However, for even the relatively small blends of ethanol modeled, the transportation infrastructure demands would be comparably larger than the current demands of petroleum. Thus if ethanol is to be competitive in the long run, then in addition to process efficiency improvements, more efficient transportation infrastructure will need to be developed, such as pipelines. In addition to these results, national and regional policy challenges on how to pay for and optimize a new fuel and distribution infrastructure in the United States are discussed. 相似文献
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耐高温乙醇酵母的研究现状及进展 总被引:1,自引:0,他引:1
乙醇是一种重要的工业原料,同时,乙醇作为一种清洁的可再生能源,可用作液体燃料替代或者部分替代汽油。应用微生物发酵技术将甘蔗、玉米、木薯和纤维类废弃物等转化为燃料乙醇,已成为解决世界能源危机的一条理想途径。本文总结了应用高温驯化、杂交育种、诱变育种、原生质体融合和基因工程等技术选育耐高温酵母的进展,并重点介绍了离子柬生物工程技术的原理及其在选育耐高温酵母应用中的优势。离子柬生物工程技术与传统微生物育种技术、现代生物技术相结合,将大大提高耐高温乙醇酵母菌种的选育效率。 相似文献