Investigation of droplet nucleation in CCS relevant systems Design and testing of a CO2 branch of the mixture preparation device

0474603 - ÚT 2018 RIV FR eng C - Konferenční příspěvek (zahraniční konf.)
Vinš, Václav - Čenský, Miroslav - Hykl, Jiří - Hrubý, Jan
Investigation of droplet nucleation in CCS relevant systems Design and testing of a CO2 branch of the mixture preparation device.
EPJ Web of Conferences. Vol. 143. CEDEX: E D P SCIENCES, 2017, č. článku 02140. ISSN 2100-014X.
[Experimental Fluid Mechanics 2016. Mariánské Lázně (CZ), 15.11.2016-18.11.2016]
Grant CEP: GA MŠMT(CZ) 7F14466
Institucionální podpora: RVO:61388998
Klíčová slova: carbon capture and storag * mixture preparation * experiment
Obor OECD: Thermodynamics
https://www.epj-conferences.org/articles/epjconf/abs/2017/12/epjconf_efm2017_02140/epjconf_efm2017_02140.html

A unique in-house designed experimental apparatus for investigation of nucleation of droplets in CCS relevant systems is being developed by our team. The nucleation is measured with the help of a rapid pressure drop within an expansion chamber. In this study, a CO2 branch representing an important part of the mixture preparation device (MPD) was designed, assembled and tested. MPD is intended for preparation of CO2-rich mixtures in a sense of accurate setting of flow rates of individual gaseous components through the experimental section with the expansion chamber. In the CO2 branch, the saturated liquid CO2 coming from a cylinder with a dip tube is pressurized by a supercritical pump with a constant flow rate to the pressures of up to 340 bar. The required mass flow of the supercritical CO2 of up to 180 g/h at pressures between 74 bar and 150 bar is accurately tuned with a help of a set of stainless steel capillary tubes with inner diameter of 0.1 mm. Some of the tubes are submerged in a thermostatic bath set to a constant temperature of 70 °C in order to assure the supercritical flow conditions of CO2. Needed lengths of the capillary tubes were determined with a help of a one-dimensional numerical model allowing prediction of both isothermal and adiabatic flow conditions.
Trvalý link: http://hdl.handle.net/11104/0272064