Shandong Zhongjie Special Equipment (formerly Heze Boiler Factory Co., Ltd.) was established in 2001, located at No. 2218 Jinan Road, Economic and Technological Development Zone, Heze City. With a registered capital of 50 million yuan and total assets of 500 million yuan, the company has seven business centers: boilers, deep-freeze containers, pressure vessels, central air conditioning, engineering installation, international trade, and Internet of Things. It has three factory sites on Jinan Road, East Yangtze Road, and Bohai Road, covering a total of 200,000 square meters. The main workshop spans 83,000 square meters. It currently employs 710 staff, including 247 engineering and technical personnel and 82 middle-level technical personnel. Recognized as a "High-tech Enterprise" by the Science and Technology Department in December 2016, it was designated as a "Specialized and New Enterprise of Shandong Province" by the Department of Industry and Information Technology in June 2021, a "Gazelle Enterprise of Shandong Province" in June 2022, and a "Specialized and New Small Giant Enterprise" by the Ministry of Industry and Information Technology in August 2022.
Carbon dioxide tanks and liquid oxygen tanks are containers used for storing different gases; they have some distinct physical properties:
Physical State: Carbon dioxide is a gas at room temperature and pressure, requiring low temperatures and high pressures to convert to a liquid state. Liquid oxygen is a liquid at room temperature, and it must be cooled to a lower temperature to solidify.
Boiling and freezing points: The boiling point of carbon dioxide is -78.5 degrees Celsius, and its freezing point is -56.6 degrees Celsius. The boiling point of liquid oxygen is -183 degrees Celsius, and its freezing point is -218.8 degrees Celsius. The boiling and freezing points of liquid oxygen are significantly lower than those of carbon dioxide.
Density: The density of liquid oxygen is high, approximately 1.14 grams per cubic centimeter. Carbon dioxide has a lower density, around 0.00198 grams per cubic centimeter. The density of liquid oxygen is about 570 times that of carbon dioxide.
Pressure: Liquid oxygen has a high pressure, typically ranging from several tens to hundreds of MPa (Megapascals). Carbon dioxide has a lower pressure, usually in the range of a few MPa.
Safety: Liquid oxygen has a high oxygen content, which is easily flammable and explosive. Carbon dioxide also poses asphyxiation risks at certain concentrations.
Note that both carbon dioxide and liquid oxygen are flammable and explosive substances. Strict adherence to relevant safety operating procedures and standards, as well as necessary safety measures, must be taken during storage and use to ensure the safety and stability of the storage tanks.

Maintaining and being aware of the precautions for liquid nitrogen tanks is crucial. Here are some key points:
Maintenance:
Regular Inspections: Conduct regular inspections of the liquid nitrogen tank's exterior, valves, pipes, and other components to ensure they are in perfect condition. Pay special attention to check for any leaks, corrosion, or other forms of damage.
Clean Storage Tanks: Regularly clean liquid nitrogen storage tanks to remove internal dirt and sediment. Use appropriate cleaning agents and tools, following the cleaning procedures and safety operating protocols.
Liquid Nitrogen Refill: Refill liquid nitrogen regularly as needed. Ensure an adequate storage quantity of liquid nitrogen in the tank to meet usage requirements.
Maintain Pressure: Regularly check the liquid nitrogen tank's pressure to ensure it remains within the safe range. Conduct pressure tests and adjustments as necessary.
Corrosion Prevention: Based on the material and operating environment of the storage tank, appropriate corrosion prevention measures are taken to extend the service life of the tank. For instance, applying corrosion-resistant coatings, conducting regular corrosion treatments, etc.
Cautionary Notes:
Safe Operation: Adhere strictly to safety operation procedures and standards when using liquid nitrogen tanks. Operators should be trained, familiar with the properties and safety operation requirements of liquid nitrogen, and acquainted with the tank equipment and operational processes.
Protective Measures: When using liquid nitrogen tanks, necessary protective measures must be taken, such as wearing protective gloves and suits. Avoid direct contact with liquid nitrogen to prevent frostbite.
Leak Control: Regularly inspect the liquid nitrogen storage tank for leaks and equip with leak detection and alarm systems. In case of a leak, immediate action should be taken to control the leak and carry out repairs.
Ventilation Requirements: In enclosed spaces where liquid nitrogen tanks are in use, it must be ensured that there is adequate ventilation.

Liquid Argon Storage Tanks are designed for storing and transporting liquid argon, featuring the following characteristics:
Low-temperature retention performance: The liquid argon tank is equipped with special insulation materials and structural design, effectively maintaining the low-temperature state of liquid argon. The tank is internally lined with insulation to reduce heat conduction and loss, ensuring long-term storage of liquid argon.
High-sealing performance: The liquid argon storage tank boasts excellent sealing properties, effectively preventing any leakage or evaporation of liquid argon. The valves, connecting parts, and seals are precision-designed and manufactured to ensure reliable sealing performance.
High strength and corrosion resistance: The liquid argon storage tank is made of high-strength materials, capable of withstanding the high pressure and low temperature of liquid argon. The internal and external surfaces of the tank are specially treated, offering excellent corrosion resistance to withstand the corrosion and oxidation of liquid argon.
Safety Performance: The liquid argon tank is equipped with multiple safety protection measures, including safety valves, pressure sensors, and level monitoring devices. These devices can monitor and control the tank's pressure, temperature, and level, ensuring the tank operates within a safe range.
Reliability and Stability: The liquid argon storage tank has undergone rigorous design, manufacturing, and testing, offering excellent reliability and stability. The tank is capable of storing and transporting liquid argon consistently over extended periods, ensuring the quality and performance of the liquid argon remain unaffected.
Easy to Operate and Maintain: The liquid argon tank is relatively simple to operate and maintain, equipped with valves and fittings that are easy to handle. The maintenance work mainly includes regular inspections, cleaning, and repairs, which can extend the lifespan of the tank.
The performance characteristics of liquid argon storage tanks make them an essential storage and transportation device for liquid argon, widely used in scientific research, industry, and other fields. When using liquid argon storage tanks, it is necessary to strictly comply with relevant operational specifications and safety requirements to ensure safe usage.

Maintenance and care are crucial for ensuring the safety of low-temperature storage tanks. Here are some common maintenance measures:
Regular Inspections: Conduct regular inspections of low-temperature storage tanks, including checks on the exterior, internal structure, and anti-corrosion coatings. Look for cracks, corrosion, wear, and other issues, and promptly identify and repair potential safety hazards.
Cleaning and De-icing: Regularly clean the exterior surface and internal structure of the low-temperature tank to remove accumulated dirt and ice layers. The buildup of ice can lead to structural damage and corrosion, while cleaning and de-icing can extend the lifespan of the tank.
Level Monitoring: Regularly monitor the liquid level in low-temperature storage tanks to ensure it stays within a safe range. Excessive or insufficient levels can lead to overpressure or over-vacuum in the tank, increasing safety risks.
Leak Detection: Install a leak detection system and regularly inspect low-temperature storage tanks for leaks. Leaks can lead to the release and evaporation of liquids or gases, increasing safety risks.
Corrosion Prevention Measures: Implement appropriate corrosion prevention measures, such as coating protection and corrosion-resistant coatings, to safeguard the metallic structure of low-temperature storage tanks from corrosion damage.
Emergency Fault Handling: Establish an emergency fault handling mechanism to promptly address and repair issues with low-temperature storage tanks, to prevent accidents from occurring or escalating.
Training and Development of Personnel: Train and develop operation and maintenance personnel to ensure they possess the relevant knowledge and skills to properly operate and maintain low-temperature storage tanks.
It's important to note that maintenance should be tailored to the specific type of tank and operating conditions, adhering to relevant local laws, regulations, and standards. During maintenance, it's advisable to consult with engineers or guidance from relevant institutions to ensure the tank's safety and reliability.
Shandong Zhongjie Special Equipment, welcome customers to visit our factory for business discussions.