CS252723B1 - A method of treating liquid carbon dioxide before filling into siphon cartridges - Google Patents

Abstract

The solution concerns the method of treating liquid carbon dioxide before filling it into siphon bottles. The essence of the method according to the solution lies in the fact that ethyl alcohol in the amount of 5 to 500% by mass is added to liquid carbon dioxide containing dissolved or dissolved and dispersed water. amount of water present.

Description

The invention relates to a method of treating liquid carbon dioxide prior to filling into siphon cylinders by adding a non-toxic substance, thereby eliminating the difficulty in filling the cylinders.

When filling siphon. of the liquid carbon dioxide cartridges on the automated rotor machine is up to 40% underfill due to insufficient cartridge filling. The cause of this phenomenon is the water present in liquid carbon dioxide, which expands and locally cools down during the filling of the cartridge in a location with the greatest local resistance. This reduces the effective cross-sectional area at the point of carbon dioxide dosing and leads to insufficient filling of the siphon cartridge. The liquid carbon dioxide temperature at 16 to 18 ° C and the pressure of 6.8 to 8.0 MPa are maintained at the inlet of the filling device.

These drawbacks are overcome by a method of treating liquid carbon dioxide prior to filling it into siphon combines according to the invention, which comprises adding to the stream of liquid carbon dioxide containing dissolved or undissolved and dispersed water ethyl alcohol in an amount of 5 to 500% by weight. amount of drinking water.

By adding ethyl alcohol to the liquid carbon dioxide prior to filling it into the siphane cartridges, the freezing point of the local cooling is reduced as a result of the pressure reduction in the first stage of filling the cartridge. For local reduction! At the pressure of liquid carbon dioxide, the dispersed water present is frozen at 0 ° C. The addition of ethyl alcohol reduces the freezing point of the water as shown in Table 1.

Table 1

Decreasing the freezing point of water by addition of ethyl alcohol

Ethanol content of the mixture 5 10 20 40 60 68 wt.

Decrease pour point 2.09 4.47 10.92 29.26 44.93 49.52 water ° C

Thus, filling the siphon cartridges with carbon dioxide with the addition of ethanol despite local supercooling to temperatures of -40 ^& C and below will not freeze the water and will not underfill the cartridge. The addition of ethyl alcohol to the liquid carbon dioxide prior to filling it into the siphon cartridges creates a health-friendly mixture.

The advantage of the liquid carbon dioxide treatment process prior to its filling according to the invention is its simple, economical feasibility.

Example 1

The liquid carbon dioxide fed to the siphon cartridges on a semi-automatic machine contained 0.07% by weight. water. By adding 50 wt. 96% ethanol to water content present in carbon dioxide reduced the number of underfilled cartridges by 60%.

Example 2

The liquid carbon dioxide filled into the siphon cartridges contained 0.08% by weight. water. By adding 450 wt. 96% ethanol based on the water content present in carbon dioxide reduced the number of underfilled cartridges by -80%.

SUBJECT

Claims (1)

OBJECTIVE A method for treating liquid carbon dioxide prior to filling into a siphon booster, characterized in that water is added to the liquid carbon dioxide stream containing r-dissolved or dissolved and dispersed water in an amount of 5 to 500 percent by weight. the amount of water present.