SU1255909A1 - Device for analyzing phase equilibrium of vapour-liquid systems - Google Patents

Abstract

The invention relates to physico-chemical laboratory equipment made of glass and can be used to model processes in distillation apparatuses. The invention makes it possible to increase the reliability of determining the moment of establishing phase equilibrium and reduce the duration of its establishment by creating a more efficient mass exchange during the bubbling of a vapor-liquid mixture. The device contains a container 10 for the test liquid with a mixing device and an external mixture heater 11, above which separation chamber 1 is located. The latter is connected to a Kottrel pump 4 and a reflux condenser 5 to which an equilibrium condensate condensate collector 9 is connected to the liquid cooler 8. The device dp mixing of the liquid is made in the form of a tube with a perforated jacket 14 and a heater 12. placed in the tube. The dielectric constant of the distillate and the equilibrium liquid is monitored by the meter 15 until it is level, indicating that phase equilibrium has been reached. 4 il. с (Л to 01 01; о о со

Description

The invention relates to physico-chemical laboratory equipment made of glass that can be used to model processes in distillation apparatuses. The aim of the invention is to increase the reliability of determining the moment of establishing phase equilibrium and reducing the duration of its establishment by creating a more efficient mass exchange while bubbling vapor-liquid mixture.

Figure 1 shows the proposed device, a general view; figure 2 - capacity with additional heater; on fig.Z - section aa in figure 2; FIG. 4 shows a section through BbB; pa of FIG.

A device for investigating phase equilibria contains a supercondition; ion-1 1 chamber 1 for separating the liquid and vapor phases j placed in the diadatic jacket 2 ii; Connecting with a go-cho, shu d grku7 pi oyyh lines 3 with a 4 Kottrell pump, providing circulation of the vapor-liquid mixture, and a reflux condenser 5, at the bottom of the condenser pair, equipped with a 6-drop counter for performance monitoring, a steam condensate collector 7, made in the form of a measuring cell with electrodes and a thermostat regulator, is connected. To the separation chamber 1 in its lower part, an equilibrium liquid collector 9 is connected through a fluid cooler 8, which is in the form of a measuring cell with electrodes and a thermo-stabilizing jacket. Collectors of steam condensate 7 and equilibrium fluid 9 are connected to circulation line 3., which ensures the return of the equilibrium condensate and fluid to the reservoir 10 for the reservoir under study. The upper part of the reservoir serves as a drain on the Cottrell pump 4, Capacity K) is equipped with an external heater i1 to ensure boiling the investigated liquid and an additional heater 12 of the small device, will be placed into the tube 13, equipped with a perforated jacket 14.

The device works as follows

The test liquid is poured into the container 10. The reverse refrigerator 5 and the refrigerator 8 are cooled with water. From the plumbing system, and into the thermostatic shirts of the collections 7 and 9;

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give water heated to a predetermined temperature.

The electrodes of collections 7 and 9, which are simultaneously measuring

5 cells, connected to the dielectric permittivity meter 15. When the test liquid is heated by the external heater 1 1, it boils with intensive over 10 mixing by bubbling the vapor-liquid mixture formed when the test liquid is heated with additional heater 12 in the space bounded by tube 13 and pert5 with a fortified jacket 14. With additional heating, the liquid under study boils in the restrictive volume and the vapor-liquid mixture formed is ejected through the holes

20 perforated shirts inside the container, as a result of which a vacuum is created in the annular space and filling 1 of this space with the test liquid takes place through

5 open KOHTJ. perforated shirt, ensuring constant circulation.

The vapor-liquid mixture is pumped by Kottrel pump 4 into the separation chamber where it is divided into an equilibrium vapor and liquid phase. The equilibrium distillate vapor enters the reflux condenser 5, and the liquid residue, previously cooled in the refrigerator 8, enters the equilibrium fluid collection 9. Reverse cold chiller 5 condenses completely and condensate enters collection 1, collection 7

Q and 9 are thermostatically controlled. The dielectric constant of liquids in collections is monitored using a meter 15 before they are typed, indicating that the phase is equal to (. Weight.

Claims (1)

Invention Formula Instrument for phase investigation. equilibria of vapor-liquid systems containing a vessel for a test flow with an external heater and a device for mixing liquid, a Cottrell pump, a separating chamber, a reverse condenser for steam and a refrigerator for fluid, collections of steam condensate and an equilibrium fluid with a dielectric constant meter, characterized in that, in order to increase the reliability of the determination of the moment of establishing phase equilibrium and reducing its duration, and for stirring the fluid device is configured. in the form of a tube with a perforated shirt and a heater placed in the tube. F1 / HL Compiled by T.Titova Editor A.Shandor Tehred M.Hodankch Order 4815/43 Circulation 778 Subscription VNIISH State Committee of the USSR for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Projecto st., A Proofreader M.Maksimishinets