Liquid CO₂ Storage Tank

The Liquid Carbon Dioxide Storage Tank is used for the centralized storage, temporary buffering, and stable supply of liquid CO₂. It is commonly found in industrial gas stations, food-grade CO₂ supply systems, welding and metalworking, chemical processes, gas filling and distribution stations, as well as industrial applications that require continuous or intermittent gas supply with high stability.

In a typical system, liquid CO₂ may be sourced from tanker unloading, plant-recycled liquefaction, or centralized supply stations. After entering the storage tank, the medium is transferred in liquid form to vaporization or gasification units, where it is converted to gaseous CO₂ and regulated for supply to users or process points. Since downstream gas demand often fluctuates with production schedules, equipment start/stop cycles, and process changes, a lack of proper buffering storage can result in frequent load fluctuations in the vaporization system. This leads to unstable supply pressure, frequent valve movements, gas quality fluctuations, and even short-term supply interruptions. Installing a liquid CO₂ storage tank helps create a buffer between the supply and demand sides: when supply is abundant, excess CO₂ is stored; when gas demand peaks or upstream fluctuations occur, stored CO₂ is released and smoothly vaporized, achieving peak shaving and valley filling, thereby enhancing the system's ability to resist disturbances and maintain continuous operation.

In terms of manufacturing and inspection, the liquid CO₂ storage tank should undergo material acceptance, welding process evaluation, weld non-destructive testing, pressure testing, and necessary leak-tightness checks, in accordance with relevant standards and contractual technical specifications. This ensures that the structural strength and sealing reliability meet long-term operational requirements. Before delivery, the inner surface cleaning and drying process should be carried out according to project requirements to prevent impurities or moisture from affecting gas quality. During transportation and on-site installation, special attention should be given to protecting nozzle flanges, sealing surfaces, and key interfaces from rain, dust, and impact. After installation, the interfaces, valve orientation, and pre-commissioning inspection should be verified.