共查询到15条相似文献,搜索用时 109 毫秒
1.
介绍了国内外催化裂化轻汽油醚化工艺的研究进展,综述了美国UOP和CDTECH公司、意大利Snamprogetti公司、芬兰Neste公司、中国抚顺石化、兰州石化和齐鲁石化在催化裂化轻汽油醚化工艺和催化剂方面的研究进展。设计新型醚化反应途径,开发出新型醚化反应所需的工艺和催化剂将成为未来发展的方向。 相似文献
2.
3.
催化裂化轻汽油醚化技术可降低汽油烯烃含量和蒸汽压,提高汽油的辛烷值,在改善油品质量的同时,将低价值的甲醇转化为高附加值汽油馏分。本文对比介绍了国内外催化裂化轻汽油醚化技术的进展状况,并对国内某炼油企业基于轻汽油醚化技术的国Ⅴ升级方案进行了分析,论述了该技术对企业汽油质量升级的经济性、适应性。 相似文献
4.
5.
制备了催化裂化轻汽油β分子筛醚化催化剂。在小型连续流动固定床反应装置进行了催化裂化轻汽油的醚化反应。考察了催化剂成型过程中,不同分子量和不同质量分数的聚乙二醇(PEG) 、浸渍氧化物方式、挤条成型与浸渍先后顺序对Hβ沸石的醚化反应活性影响, 同时还考察了醚化反应温度、压力、醇烯比和空速对醚化反应的影响。实验结果表明,添加质量分数为10%的扩孔剂PEG-4000成型,再共同浸渍氧化物制备的Hβ分子筛催化剂具有最佳的醚化反应活性。在最佳反应条件(温度70 ℃,压力0.8 MPa,空速1.0 h-1,醇烯摩尔比1.0)下,叔碳烯烃转化率达到62.93%。 相似文献
6.
7.
介绍了轻汽油醚化反应、反应原理及丹东明珠特种树脂有限公司生产的D005-Ⅱ_S轻汽油醚化专用树脂催化剂的优点,并分析了轻汽油醚化树脂催化剂失活原因,提出了相应对策。根据失活原理,优化了D005-Ⅱ_S树脂催化剂的生产工艺,提高D005-Ⅱ_S树脂催化剂在轻汽油醚化装置的使用寿命,技术性能优于国内外同类产品。 相似文献
8.
9.
10.
11.
12.
Worapon Kiatkittipong Piyaporn Thipsunet Shigeo Goto Choowong Chaisuk Piyasan Praserthdam Suttichai Assabumrungrat 《Fuel Processing Technology》2008
Ethanol and ethanol derivatives are attractive renewable energy resources nowadays. Even though ethanol can be blended directly into gasoline (called “gasohol”), many recent researches have reported disadvantages of gasohol. Apart from immiscibility and corrosion problems, overall air pollutant emissions from the use of gasohol are usually higher than those from the use of conventional gasoline because of its higher blending Reid vapor pressure (bRvp). Ethers derived from ethanol may overcome these drawbacks. Direct etherification of FCC gasoline with ethanol was investigated in this work. The reactions were carried out in a pressurized liquid phase reactor at 0.8 MPa and catalyzed by two commercial catalysts, i.e., β-zeolite and Amberlyst 16. The bRvp of etherified FCC gasoline was found to be lower than that of gasohol (20 vol.% ethanol), indicating that the gasoline from this process is more suitable than gasohol especially for the tropical zone or in summer. The decrease of bRvp was due to the consumptions of both ethanol and olefins. In case of β-zeolite catalyst, ethanol conversion was 36.3% while olefins content was decreased from 25.7 to 13.9 vol.%. However, as expected, etherified FCC gasoline gave slightly lower RON than gasohol. It was found that β-zeolite was a more suitable catalyst than Amberlyst 16 for the etherification of FCC gasoline with ethanol because it offered products with higher RON and higher ethanol conversion. 相似文献
13.
14.