首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 0 毫秒
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
Char particles from pyrolyzed biomass vary in particle size and shape. On average, the particles are more elongated the larger their size. The average size‐specific elongation is almost alike for all investigated samples, i.e. independent from their source material and process. The particle collectives cannot be characterized accurately with classical particle size distributions, which assume spherical particle shape. Accounting for their shape, they can be described more accurately with particle size distributions that are based on an ellipsoid model. The high bulk porosity is mainly attributed to the spaces between particles.  相似文献   

17.
18.
The first oil‐producing regions in the human history were located near Baku. Until the beginning of the 20th century, the Balachany‐Sabuncu‐Ramany region produced more than 60 % of Baku's oil. This oil sources are largely exploited and contain yet only heavy extractable fractions of crude oil. Experiments with oil samples from this oil fields show, that irradiation with microwaves under addition of magnetite catalysts leads to a reduction of petroleum viscosity. It seems to be a new attempt for intensive extraction of petroleum.  相似文献   

19.
20.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号