共查询到20条相似文献,搜索用时 46 毫秒
1.
高枫 《中国石油和化工经济分析》2007,(13)
随着美国禁用MTBE作为汽油含氧化合物,以及乙醇供应的限制,增大了对包括对二甲苯在内的芳烃作为汽油调合物的需求。使用混合二甲苯生产对二甲苯将继续与具有低成本对二甲苯 相似文献
2.
3.
4.
随着环境保护法规的日趋严格,新配方汽油已成为世界汽油质量的发展趋势。亚太地区的日本、澳大利亚、韩国、中国台湾省、泰国、马来西亚和新加坡等国家或地区已经或者即将实现汽油的无铅化。与亚太地区的发达国家相比,我国在汽车排放标准和汽油规格方面存在很大差距,汽油质量升级势在必行。现有炼厂应加紧技术改造,增加催化裂化、催化重整能力,增产MTBE和烷基化油,增建异构化装置生产异构化油,并采用多种方法生产高辛烷值汽油,以提高我国的汽油质量。 相似文献
5.
6.
随着国V汽油在各地的陆续推进,我国提高油品质量步伐明显加快。由于汽油标准连续升级,炼厂在降低硫含量的同时,也造成了汽油辛烷值不同程度的损失,提高辛烷值的汽油组分甲基叔丁基醚(MTBE)添加量不断增大,成为辛烷值提升的常规产品。但MTBE对环境和人类健康的危害日益引起重视。 相似文献
7.
8.
汽油禁用MTBE的预测分析 总被引:13,自引:0,他引:13
钱伯章 《石油化工技术经济》2001,17(3):33-35
甲基叔丁基醚(MTBE)是汽油的辛烷值改进剂,在汽油的无铅化中发挥了重要作用,但近来发现它会污染地下水,因此已在美国的部分地区遭桂区,文章预测了MTBE大规模禁用的可能性,分析了替代产品的开发情况。 相似文献
9.
傅津 《石油化工技术经济》2006,22(6):32-35
由于甲基叔丁基醚(MTBE)的污染问题以及国际油价的持续高涨,生物燃料乙醇越来越受到美国社会公众的关注。生物燃料乙醇具有与MTBE相近的高辛烷值、良好的辛烷值调合效应、含氧量高达34.7%等特性,在技术和经济上都具有替代MTBE的可行性,美国大力推广生物燃料乙醇替代MTBE。针对美国禁用MTBE的趋势,对国内MTBE的生产和应用前景提出了发展建议。 相似文献
10.
11.
12.
14.
Russell W. Pittman 《International Journal of Industrial Organization》1984,2(4):341-365
This paper examines the most likely example of anticompetitive behavior uncovered in the U.S. vs. IBM antitrust suit: the introduction by IBM of its 360/90 ‘super computer’ in response to the introduction of a similar machine by a competitor. The two leading competing hypotheses are examined — that IBM introduced its system as a weapon of predation, and that IBM expected the system to be profitable — and both are found wanting. The paper concludes that IBM almost certainly knew that the system would be unprofitable, but that the hypothesis of predation is less appealing than that of product-market signaling. 相似文献
16.
17.
18.
19.
This article deals with the two major problems in depreciation: how to determine actual wear and tear and, thus, life of equipment; and how to treat depreciation and its associated expenses in the accounting records. With regard to the first, the author recognizes that a certain amount of arbitrary action is probably inevitable. Industry in the USSR is evidently bound by its own equivalent of “Bulletin F”, which sets “amortization norms” or depreciation allowances for each class of machinery; and it is found that these often do not correspond to actual operating experience. The machine may be scrapped either before its allocated life span, or survive fully depreciated. This fact is, of course, quite familiar, and the author has no suggestions to offer beyond pointing out the problem. He also questions, for technical reasons, the straight line method which is now generally used. Yet it is almost impossible to justify, on functional grounds, any regulated alternative method, such as declining balance or sum-of-the-years-digits. 相似文献
20.
Review of Industrial Organization - 相似文献