General information
The CO₂ gas plant is a compact and easy to operate equipment, fully automated and capable of operating on diesel, natural gas or paraffin. This plant performs a controlled combustion process that produces flue gases with a high CO₂ content. Our carbon dioxide plants are diverse and designed to meet the needs of different customers.
The CO₂ Plant 2 is a fully automated liquid CO₂ production system that utilises a low density liquid solution to safely and efficiently create high quality food grade CO₂ gas. The industrial production of liquid CO₂ is ideal for the carbonated beverage industry.
How is commercial ultra-high purity CO₂ produced?
Carbon dioxide (CO₂) is produced on an industrial scale by burning natural gas and separating the carbon and hydrogen atoms. The process involves several stages of purification and liquefaction of food-grade gas. The CO₂ is compressed at a pressure of 16.5 bar and fed into double high-pressure activated carbon columns for efficient purification. The activated carbon removes odors and aldehydes. The towers operate cyclically with switching via a PLC-based control system and valves. After the second tower is activated, the first tower undergoes regeneration with steam generated by an electric steam generator. The regeneration removes impurities from the activated carbon. This cycle repeats indefinitely, providing high quality purified CO₂ gas.
CO₂ production process
During the production process, complete combustion of the fuel takes place under strictly controlled conditions. After cleaning the flue gases with water or soda ash, the CO₂ is absorbed by the solution heated during the combustion process, with the subsequent release of raw CO₂ gas.
The CO₂ is sent to a vertical two-stage dry (oil-free) compressor and purified in a high-pressure apparatus using potassium permanganate purifier. After drying in an automatic two-column molecular sieve dryer, the CO₂ undergoes final purification in an inactivated carbon filter and enters the refrigeration circuit for liquefaction. The continuous CO₂ production process is characterized by high efficiency, reliability and safety. The CO₂ produced meets all international food quality standards and is widely used by leading gas companies as well as in the production of soft drinks and beer in more than 100 countries.
Production of liquid CO₂
The low-pressure carbon dioxide collection method is a process where CO₂ is either created at high pressure and then reduced to a low-pressure level or frozen. The resulting CO₂ gas is then injected into special storage containers. These containers are progressively insulated and equipped with cooling devices to ensure that the physical pressure remains at or below 21 bar (304.58 psi) and at -18 °C (-0.4 °F).
Pressure switches are used to monitor the operation of the cooling units. Additional safety mechanisms and digital alarm systems are equipped with means to pressurise the tank and transmit notifications in the event of a cooling system failure.
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Design that is space-saving, simpler and yet still efficient in absorption.
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The modular and concise design of the elements enables swift and effortless installation. Moreover, it facilitates the creation of diverse layouts using minimal space.
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The design of this system enables effective handling of the water scrubbing process. It efficiently recycles, neutralizes, and dissipates all heat from the water within a single circuit. This innovative system minimizes the volume of water discharged into the drain, resulting in enhanced economic efficiency.
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The choice between indoor or outdoor installation for each process tower provides layout flexibility in various scenarios. Opting for an outdoor setting also lessens the need for extensive weather protection measures for the system.
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Tailored for CO2 gas applications, the uniquely designed dry-running compressor eliminates any risk of oil contamination in the CO2, ensuring purity and reliability.
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Longer residence time provides ultra-efficient NOx and H2S removal
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In the CO2 gas inlet line to the liquefier, a high-capacity carbon filtration column is incorporated, offering additional confidence in the delivery of CO2 that is both pure and free from any undesirable odors.
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Automated plant operation and panel visualization offer a centralized position for clear visual displays and one-touch access to process data readouts, streamlining operational control.
