The cryogenic air separation equipment for ultra-pure carbon dioxide employs a meticulous process to ensure the production of high-quality carbon dioxide with exceptional purity. The following steps outline the process description:
1. Intake and Compression: The air, containing carbon dioxide, is taken into the cryogenic air separation equipment and compressed to the desired pressure. This compression stage prepares the air for further processing.
2. Cooling and Liquefaction: The compressed air undergoes a series of cooling processes to lower its temperature. Cryogenic refrigeration systems are employed to achieve extremely low temperatures, causing the carbon dioxide to transition from a gas to a liquid state. The cooling and liquefaction stages enable the separation of carbon dioxide from other components present in the air mixture.
3. Separation and Purification: The cooled and liquefied air is then subjected to separation processes, which involve techniques such as ambient temperature molecular sieve purification. This purification method selectively removes impurities and contaminants, ensuring that the resulting carbon dioxide is of ultra-pure quality.
4. Medium-Pressure Air Circulation and Expansion: In certain cases, a medium-pressure air circulation technique combined with high and low-temperature expansion refrigeration is employed. This process involves circulating the air at a medium pressure and subjecting it to controlled temperature expansions. These expansions facilitate the liquefaction of carbon dioxide, enabling its separation from other components.
5. Quality Assurance: Throughout the process, stringent quality control measures are implemented to monitor and verify the purity levels of the produced carbon dioxide. Analytical techniques are utilized to ensure that the carbon dioxide meets or exceeds the required purity standards, often surpassing 99.9999% purity.
By utilizing advanced cryogenic technology, our cryogenic air separation equipment ensures the efficient and reliable separation of carbon dioxide, resulting in ultra-pure carbon dioxide output. The precise combination of compression, cooling, liquefaction, separation, and purification techniques guarantees the highest quality carbon dioxide for various industrial applications, meeting the stringent requirements of industries such as healthcare, food and beverage, and others that rely on ultra-pure carbon dioxide for their processes.