Core Distinction Between Atmospheric Tank And Pressure Tank

1. Core Definitions and Pressure Thresholds (Essential Distinctions)
• Atmospheric Tank (Open- Storage Tank): A closed or open-top storage tank with a design pressure close to atmospheric pressure, typically with a gauge pressure of <0.1MPa. Some atmospheric tanks a slight positive pressure have a gauge pressure of no more than 0.05MPa. The core feature is that they do not bear "high-pressure loads." pressure inside the tank is mainly balanced with the atmosphere through devices such as breathing valves.
• Pressure Tank (Pressurized Storage Tank): According to the "Safety Technical Superv Regulations for Pressure Vessels," refers to a closed container with a gauge pressure ≥0.1MPa. It must actively bear the pressure load generated by the medium Some high-pressure tanks can have a gauge pressure of over 100MPa, making them special equipment with both storage functions and pressure-bearing capabilities.

2. Applicable Media and Scenarios (Core Use Differences)
2.1 Scope of Application of Atmospheric Tanks
Mainly used to store media that are at atmospheric pressure and have no significant vapor pressure, typical scenarios include:
• Civil sector: Fresh water storage tanks, fire water tanks, edible oil storage tanks, etc.;• Industrial sector: Atmospheric raw material tanks in the chemical industry (such as methanol atmospheric storage tanks), lubricating oil storage tanks, sewage storage tanks, fruit storage tanks in the food industry, etc.

2.2 Scope of Application of Pressure Tanks
Specifically used to store high-pressure gases, liquefied, or liquid media with certain pressure. It is necessary to maintain the medium state or transportation requirements through pressure. Typical scenarios include:
• Energy sector: Natural gas storage (medium and high pressure), LNG (liquefied natural gas) storage tanks, LPG storage tanks at gas stations;
• Industrial sector: Steam storage tanks compressed air storage tanks, chemical reaction pressure tanks, aseptic pressure storage tanks in the pharmaceutical industry;
• Special sector: High-pressure hydrogen storage tanks, on-board storage tanks, etc.