共查询到19条相似文献,搜索用时 171 毫秒
1.
2.
3.
4.
5.
燃料乙醇--酒精行业可持续发展之路 总被引:1,自引:0,他引:1
将乙醇脱水加入适量变性剂形成“变性燃料乙醇”,再和一定比例的汽油进一步混合,生产清洁燃料“车用燃料乙醇汽油”。“燃料乙醇”是一种可持续发展的绿色生物质能源,其生产可长期、稳定、有效地解决过剩农产品的转化、增值问题。以陈化粮食为原料生产“燃料乙醇”,走综合利用、综合开发、经济循环模式,可生产汽油、蛋白、汽水、饲料、沼气等产品,可降低燃料乙醇的生产成本,解决能源危机和实现保护环境,实现酒精行业的最佳经济效益的可持续发展。 相似文献
6.
研究了从羊栖菜中提取褐藻糖胶的工艺 .采用高浓度醇溶液处理羊栖菜粉、稀酸提取、减压浓缩、乙醇分级沉淀和冷冻干燥等单元操作 ,可以获得褐藻糖胶产品 .通过正交试验 ,摸索在不同提取温度、提取时间和 pH值条件下粗褐藻糖胶产品的得率及岩藻糖的提取率 相似文献
7.
8.
9.
10.
11.
12.
13.
14.
15.
W. A. Scheller 《Starch - St?rke》1981,33(1):1-4
With the high price of petroleum which came about after oil embargo of 1973 there has been a need to find renewable energy sources. Ethanol made from starch or sugar is a renewable fuel. A program for using 10% ethanol and 90% unleaded gasoline was begun in Nebraska and has now become a program of national interest. This fuel mixture is called Gasohol. Gasohol has been tested in a 3.3 mio. km program and is shown to provide better fuel economy and less pollution than unleaded gasoline. In large plants using maize as raw material ethanol can be produced profitably at 36 cents/l. The byproduct cattle feed is a high protein material for feeding beef and dairy cattle. The ethanol has a value in Gasohol of at least 45 cents/l. When compared to gasoline, Gasohol saves energy. For each liter of ethanol which is blended with 9 l of unleaded gasoline there is a reduction of at least 1.23 l of crude oil usage compared to using only gasoline. 相似文献
16.
17.
我国生物燃料乙醇产业的发展始于“十五”初期,经过20多年的发展,已经成为全世界第三大燃料乙醇生产国和消费国。燃料乙醇产业的发展,不仅可以优化能源结构,促进生态环境改善,而且是国家在新时期有效调控粮食安全大局的重要途径。该文通过对燃料乙醇的产业基础、原料供给、市场需求等几个方面的分析,论证了其在新时代社会主义现代化建设进程中的可持续发展的内在逻辑。针对新时代我国燃料乙醇产业面临原料供给侧结构性改革、新能源汽车深度发展、非生物基乙醇和进口燃料乙醇竞争等不利因素的冲击,提出了“以服务国家粮食安全为核心的新产业定位、以构建‘两阶段’为特点的新原料战略、以科技创新为引领-统筹产业时空布局规划的途径、以指导-提升服务能力为保障的新发展战略”的新思路、新策略,对推动我国燃料乙醇产业健康发展具有重要意义。 相似文献
18.
19.
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