Shandong Zhongjie Special Equipment Co., Ltd. specializes in the following products: fuel (gas) boilers, organic heat carrier boilers, biomass boilers, waste heat recovery boilers, and other boiler products; vacuum insulation cryogenic pressure vessels such as LNG tanks, oxygen/nitrogen/argon tanks, and CO2 tanks; pressure vessel products including denitrification engineering equipment, heat storage and energy storage equipment, and complete chemical equipment sets; central air conditioning and HVAC equipment such as ground (water) source heat pumps, air source units, water-cooled screw units, and air-cooled modular units. Planned products include large-scale energy centers, LNG transport vehicles, LNG tank containers, and other green energy equipment.
When storing liquid nitrogen in low-temperature storage tanks, please note the following points:
Protective Gear: When operating low-temperature storage tanks, it is mandatory to wear appropriate protective gear, including gloves, protective clothing, and non-slip shoes. This gear safeguards the skin from the low temperatures of liquid nitrogen and other hazards.
Avoid direct contact: Liquid nitrogen is extremely cold and can cause frostbite. Therefore, it is crucial to avoid direct contact with liquid nitrogen, especially with the skin. Use tools or utensils for handling to prevent direct hand contact with liquid nitrogen.
Ventilation Requirements: Ensure adequate ventilation in the operation area of low-temperature tanks to expel gases produced by the evaporation of liquid nitrogen. Maintain air circulation to avoid excessive oxygen concentration, reducing the risk of fire and explosion.
Prevent Leaks: Regularly inspect the low-temperature storage tanks for leaks and equip them with leak detection and alarm systems. In case of a leak, take immediate action to control and repair it. Avoid the hazards of liquid nitrogen leaks to personnel and the environment.
Fire Prevention Measures: Liquid nitrogen has a low boiling and freezing point, which can easily cause fires. To prevent and contain fires, fire walls and fire-retardant coatings are set up around low-temperature storage tanks.
Electrostatic Protection: Electrostatic buildup in low-temperature storage tanks may cause sparks, increasing the risk of fire. Measures should be

The temperature difference between the interior and exterior of a low-temperature liquid storage tank depends on multiple factors, including the tank's design, insulation performance, the liquid's temperature, and the ambient environmental temperature. Generally speaking, the temperature inside a low-temperature liquid storage tank is much lower than that of the external environment.
Low-temperature liquid storage tanks are commonly used for storing liquefied nitrogen, oxygen, argon, and other low-temperature liquids. These liquids have very low boiling points, usually below -100 degrees Celsius. To maintain the低温 state of the liquids, the storage tank must have excellent insulation properties to minimize heat conduction and evaporation loss.
Low-temperature liquid storage tanks typically offer a smaller temperature variance. Generally, the internal temperature of the tank can be maintained near the boiling point of the liquid, usually several tens of degrees Celsius lower than the ambient external temperature. The specific temperature variance depends on the tank's design and insulation properties, as well as the characteristics of the liquid.
Note that the temperature differences in low-temperature liquid storage tanks may vary over time. As time passes, the insulating material's performance may be affected by wear or aging, leading to increased temperature differences. Therefore, regular inspection and maintenance of the tank's insulation are crucial to ensure its effective and stable insulating performance.

When selecting low-temperature liquefied natural gas (LNG) storage tanks, the following factors should be considered:
Tank Types: Common LNG tank types include vertical fixed-roof tanks, spherical tanks, and horizontal tanks. Select the appropriate tank type based on specific application requirements and site conditions.
Tank Capacity: Determine the tank capacity based on the storage requirements and anticipated usage of LNG. The tank capacity should be sufficient to meet the expected storage duration and supply demands.
Material Selection: LNG tanks typically use low-temperature steel or nickel alloy materials to ensure corrosion resistance and strength in low-temperature environments. Select the appropriate material based on the tank's design pressure and temperature requirements.
Safety Performance: LNG tanks should possess excellent safety performance, including seismic resistance, fire resistance, and leak control capabilities. The tanks must comply with relevant safety standards and regulations, such as API 620, EN 1473, etc.
Maintenance and Inspection: Consider the maintenance and inspection requirements for the tank, including internal cleaning, coating protection, corrosion prevention measures, etc. The tank's design should facilitate maintenance and inspection operations to ensure long-term reliable operation.
Environmental Impact: When selecting an LNG tank, consideration must be given to its impact on the surrounding environment. The layout and design of the tank should comply with environmental protection requirements, minimizing noise, vibration, and gas emissions to reduce environmental impact.
Cost-effectiveness: Consider the investment, operational, and lifecycle costs of the tank to select one with a favorable cost-performance ratio.
需要注意的是，选型LNG储罐时应遵循相关的和地区的法规、标准和规范。此外，咨询的工程师或储罐制造商，以获取更详细和准确的选型建议。

Low-temperature storage tanks offer several advantages:
Storage: Low-temperature storage tanks can store liquid cryogenic substances (such as liquid nitrogen, liquid oxygen, etc.) at low temperatures, maintaining their liquid state. Compared to gas storage, liquid storage significantly increases storage density and saves storage space.
Long-term Storage: Low-temperature storage tanks are designed for long-term storage of低温 materials, extending their service life. By controlling the temperature within the tank and the performance of the insulation layer, the evaporation and oxidation of liquid substances can be slowed down, maintaining their stability and purity.
Safety: Low-temperature storage tanks have excellent safety performance. These tanks are made with special materials and structural designs to withstand low temperatures and high-pressure environments. Additionally, the tanks are equipped with safety devices such as pressure relief valves and liquid level alarms to ensure safe operation and usage.
Wide Range of Applications: Low-temperature storage tanks are extensively used in various fields. They can be used for storing liquid oxygen and providing oxygen supply; in industrial sectors, they are suitable for storing liquefied natural gas (LNG) and other process gases like liquid nitrogen; in scientific research, they are ideal for storing low-temperature experimental samples.
Environmental Protection and Energy Conservation: Low-temperature storage tanks enable effective storage and utilization of low-temperature materials, reducing energy waste and environmental pollution. During the storage and transportation of liquid materials, energy loss is minimal, enhancing energy utilization efficiency.
In summary, low-temperature storage tanks offer advantages such as storage, long-term storage, safety, multi-field applications, and environmental protection and energy saving. This makes them crucial equipment for storing and supplying low-temperature materials, playing a significant role in various industries.
Shandong Zhongjie Special Equipment, welcome customers to visit our factory for business discussions.