What to Consider to Choose the Best Carbon Dioxide Mixer

Good machines produce high-quality products, and carbon dioxide mixing is an important part in the manufacture of carbonated beverages. So here are some factors for choosing the carbon dioxide mixer from Comark Machinery.

The process of mixing CO2 and water is called carbonation. The degree of carbonation directly affects the quality and taste of the product. It is one of the important steps in the production of carbonated beverages. The process of carbonation is a chemical process, CO2 reacts with water of equal material quality to synthesize carbonic acid. Carbonic acid is a weak acid, its acidity only produces a slight irritation of carbonated beverages on the tongue.

The factors affecting carbonation are as follows:

1. Temperature and pressure:

When the pressure is constant, the lower the temperature, the greater the solubility of CO2. In the actual production process, in order to achieve the required degree of carbonation, the carbonation process needs to control a certain pressure, also need to be equipped with a set of cooling equipment-freezer,etc.Generally, the carbonation temperature is controlled at 3-5℃, and the pressure of CO2 is within the range of 29.4-39.2kpa. So the mixer should selected the equipment with a large contact area for CO2, membrane carbonation tanks and spray carbonation tanks, etc.

When starting up, first use water to remove the air, use CO2 to remove the moisture in the machine, and then start watering. The usage of CO2 cylinders sometimes frost at the output pipe because the CO2 temperature in the pipe is low and the outside temperature is high. A tap water spray device can be installed on the pipe wall shell to prevent the pipe from being blocked.

2. Air

Air can be slightly dissolved in water. In unit volume of water, the volume of dissolved air is also related to temperature and pressure, but the degree of influence is different. The experimental data shows: the pressure generated by dissolving 2% of air is equivalent to dissolving 100% of CO2, so dissolving a small amount of air will repel a large amount of CO2. A perfect carbonation process can only be achieved if there is no air in the water and no air impurities in the CO2.

Generally, the main sources of air comes from: impure CO2, leaks in the air path, dissolved oxygen and bubbles in the water, leaks in the pumping pipeline, dissolved oxygen and bubbles in the syrup, in the mixer and in the pipeline.

The air in the water can be treated with a degasser, and excessive and excessive stirring should be avoided when preparing the syrup to prevent air from entering. And remove air bubbles in the syrup by standing still.

3. Absorption of carbon dioxide gas by various liquids

The absorption capacity of different liquids for a certain gas is different.

The solubility of CO2 in water at 0℃is 1.713g; but the solubility of CO2 in alcohol at the same temperature is 4.23g. To make finished products with a certain amount of carbon dioxide gas, water temperature and pressure need to be strictly controlled. In general, the loss of carbon dioxide is only at the mouth of the filling bottle. Therefore, to save carbon dioxide and improve the mixing effect, the following measures should be taken:

  1. Lower the water temperature.
  2. Exhaust the air in the water and the CO2 container.
  3. Improve the purity of CO2.
  4. Use the latest model of COMARK mixer , supporting the use of cooling water and exhaust devices.
  5. Maintain the pressure and temperature of the CO2 gas supply process.
  6. The ratio of entering the mixer to CO2 is appropriate.

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