The raw material carbon dioxide (CO₂) for the production of dry ice is usually obtained from various industrial processes. One of the most common sources is the chemical industry, particularly in the production of ammonia. In this process, nitrogen from the air is combined with hydrogen at high temperatures and pressures, producing CO₂ as a by-product. This CO₂ can then be captured and purified. The combustion of fossil fuels in power plants or fermentation in beer and wine production also produces CO₂, which can also be used for dry ice production.
In the first stage of extraction, the CO₂ from these processes is captured, filtered and purified to remove impurities and achieve a high level of purity. The purified gas is then compressed and stored under high pressure.
The production of dry ice in a pelletizer takes place in several steps. First, the liquid CO₂ is fed from the pressure vessel into the pelletizer. Here, the CO₂ is pressurized to a very low pressure under controlled conditions, causing the gas to expand rapidly and convert into solid carbon dioxide. This conversion takes place in the form of pellets, nuggets, blocks or slices.
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The production of dry ice is a precisely coordinated process that makes it possible to produce high-quality dry ice from industrially produced CO₂.
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