|
| |
|
|
Purification of Raw Biogas to CNG Quality by Norm 133/2010.
Izák, Pavel ; Žitková, Andrea ; Vejražka, Jiří ; Sedláková, Zuzana ; Morávková, Lenka
Membrane separation processes have recently been increasingly used in the purification of various gases. Their involvement in the processes of upgrading biogas is the logical consequence of this development. The aim of the process is removed from a biogas carbon dioxide and other undesirable substances, eg. sulfur compounds and moisture, and thus obtain a gas with a high proportion of methane (> 95 vol.%), which could be used as a substitute for natural gas. As is evident from the results of our method, the selected RO membrane conforms 133/2010 CNG norm exept the amount of water. The amount of water in the retentate (product) is solved by classical dryer.
|
|
| |
|
| |
|
| |
|
| |
|
| |
|
|
Organic Vapour Sorption and Permeation in Polymer Gel Membrane Containing Imidazolium Based Ionic Liquid
Morávková, Lenka ; Vopička, O. ; Vejražka, Jiří ; Vychodilová, Hana ; Sedláková, Zuzana ; Friess, K. ; Izák, Pavel
In this work, vapour sorption and transport properties were studied for the aliphatic hydrocarbon (hexane), branched hydrocarbon (isooctane), and alcohol (ethanol) using a gravimetric sorption apparatus and a home-made laboratory-scale apparatus, respectively. The ionic liquid polymer gel membrane based on poly(vinylidene fluoride-cohexafluoropropylene) (abbreviated p(VDF-HFP)) was prepared by solvent casting from a solution in acetone. The used membrane contains 80 wt. % of the imidazolium basedionic liquid 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([emim][Tf2N]).
Fulltext: content.csg -  PDF
Plný tet: SKMBT_C22014090110397 - PDF
|
|
|
Collision of a Small Bubble with a Large Falling Particle
Vejražka, Jiří ; Hubička, M. ; Basařová, P.
The motion of a tiny bubble (< 1mm) in a neighborhood of a solid sphere falling through a liquid is studied. A model assuming irrotational flow around the sphere and spherical bubble shape is provided; this model is validated by comparison with the experiment. The model can be further simplified by neglecting inertial forces, which are negligible in present experiments. Results of the model are provided also for the opposite limit, in which the inertial forces are dominating the bubble motion.
Fulltext: content.csg - PDF
Plný tet: SKMBT_C22014011511310 - PDF
|
|
| |
guest ::
RSS feed.