Vacuum Insulated LCO₂ Storage Tank

 

The vacuum-insulated LCO₂ storage tank is a core piece of equipment for cryogenic liquid storage, utilizing either "high-vacuum multilayer insulation" or "vacuum powder insulation" technology. By creating and maintaining a high-vacuum environment between the inner and outer tanks, it effectively blocks heat transfer, enabling extremely low loss and long-term stable storage of liquid carbon dioxide (-20°C).

Core function

1. Efficient cooling and reduced evaporation losses

A high vacuum environment is formed between the inner and outer shells of the storage tank, and insulation materials such as pearl sand are filled to significantly suppress heat conduction, convection, and radiation. This results in an extremely low evaporation rate of liquid carbon dioxide, which can remain liquid even after long-term storage, significantly reducing material loss and operating costs caused by vaporization

2. Safely store high-pressure and low-temperature media

Liquid carbon dioxide is stored at low temperatures, but there is still a certain saturation vapor pressure inside the container (usually working pressure is 2.16MPa to 2.5MPa). The vacuum insulation structure combined with high-strength low-temperature steel (such as 16MnDR inner liner and Q345R outer shell) ensures the structural strength and safety of the container under extreme temperature and pressure differences, preventing dangerous situations caused by sudden pressure increases due to temperature rise

3. Realize centralized and stable gas supply

As a large-scale storage unit, vacuum insulated CO₂ storage tanks can serve as a "transfer station" for industrial gas sources, converting liquid CO₂ into gas through vaporizers, providing downstream users with stable and high flow gas supply, avoiding the trouble of frequent replacement of steel cylinders. ‌

1. Work pressure: It is usually divided into two types: 0.8MPa (low pressure) and 1.6MPa (medium pressure), which need to be matched according to storage capacity and usage scenarios.

2. Capacity specifications: Common capacities range from 0.5m ³ to 50m ³, and large storage tanks require a professional liquid level monitoring system.

3. Safety certification: A pressure vessel manufacturing license (such as A3 level) is required

4. In daily use, frequent opening of the lid for liquid extraction should be avoided to prevent rapid vaporization of liquid carbon dioxide and abnormal pressure in the storage tank; At the same time, anti freezing measures should be taken to prevent the valve from being affected by low-temperature freezing during operation.

(For Reference Only)

• Direct loss savings
• Ensure flexibility in production and sales
• Reduce long-term operating and maintenance costs
• Enhance the overall image and reliability of the project

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