Shandong Zhongjie Special Equipment's main products include: fuel (gas) boilers, organic heat carrier boilers, biomass boilers, waste heat boilers, and other boiler products; vacuum insulation cryogenic pressure vessels such as LNG tanks, oxygen/nitrogen/argon tanks, and CO2 tanks; pressure vessel products such as denitrification engineering equipment, heat storage and energy storage equipment, and complete chemical equipment; central air conditioning and ventilation 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.
The use of liquid nitrogen storage tanks in rapid freezing technology offers several advantages:
Rapid Freezing Speed: Liquid nitrogen has a low temperature of about -196 degrees Celsius. Using a liquid nitrogen tank for quick freezing can rapidly lower the surface temperature of food, achieving fast freezing. Compared to traditional freezing methods, liquid nitrogen freezing can significantly reduce freezing time while preserving the quality and texture of the food.
Uniformly Frozen Effect: The liquid nitrogen quick-freezing technology achieves rapid and even freezing of food. Liquid nitrogen is喷射 onto the food surface in a gaseous form, quickly absorbing heat and converting to a liquid state, thereby ensuring even freezing of the food, avoiding crystallization and clumping during the freezing process.
Maintain Food Quality: Rapid freezing with liquid nitrogen swiftly reduces the surface temperature of food, forming minute frozen structures that effectively preserve moisture and nutritional content, minimizing crystallization and clumping during the freezing process, thereby maintaining the quality and texture of the food.
Flexibility and Adaptability: The liquid nitrogen tank can be adjusted and controlled according to different food types and freezing requirements. It can modify the injection speed and angle of liquid nitrogen based on the size, shape, and freezing needs of the food to achieve optimal freezing results.
Environmental protection and energy-saving: Liquid nitrogen rapid freezing technology, compared to traditional freezing methods, can save more energy and resources. Liquid nitrogen evaporates quickly during the freezing process, causing environmental pollution and generating waste water and gas.
Be mindful that when using liquid nitrogen tanks for rapid freezing, it is crucial to adhere to the relevant safety operating procedures and guidelines. Ensure that operators possess the necessary safety awareness and operational skills to prevent accidents. Additionally, consult

Liquid Oxygen Storage Tanks are specialized equipment that require special attention to safety and an understanding of their characteristics. Below are the safety precautions and features of using liquid oxygen storage tanks: **Safety Precautions:** - **Operation:** The operation of liquid oxygen storage tanks should be performed by trained and experienced personnel. Operators should be familiar with the tank's structure, performance, and operating procedures, and operate strictly according to the manual and safety regulations. - **Fire Prevention Measures:** Liquid oxygen is highly oxidizing and can easily cause fires and explosions. Open flames and sparks, as well as high-temperature objects, should be prohibited around the storage tank. Fire protection facilities and fire extinguishing equipment should be established and regularly inspected and maintained. - **Leakage Control:** In the event of a leakage, immediate measures should be taken to control the leakage. Leaks can lead to the evaporation of liquid oxygen and an increase in oxygen concentration, increasing the risk of fire and explosion. A leakage alarm system should be set up, and leakage control devices and personal protective equipment should be provided. - **Insulation Protection:** Liquid oxygen storage tanks should have good insulation protection to reduce evaporation and maintain a low temperature state. The insulation layer should be inspected and maintained regularly to ensure its integrity and insulating performance. - **Safety Distance:** A certain safety distance should be maintained around the storage tank to prevent the spread of fires, explosions, and leaks. The specific requirements for safety distance should be assessed and determined according to local regulations and standards. **Features:** - **High Oxidizing Property:** Liquid oxygen has a high oxidizing property, which can support combustion and cause more intense burning. Therefore, special attention should be paid to fire and explosion prevention measures when using liquid oxygen storage tanks. - **High Pressure Storage:** Liquid oxygen storage tanks typically store high-pressure oxygen, with pressures usually around 2-5 bar. Therefore, when operating and maintaining liquid oxygen storage tanks, attention should be given to pressure control and the safety of pressure relief devices. - **Low Temperature Storage:** The liquid oxygen in the storage tank is at a low temperature, usually around -183°C. Therefore, when handling the storage tank, appropriate protective measures should be taken.

The low-temperature storage tank boasts several advantages:
Storage: Low-temperature storage tanks can store liquid low-temperature 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 space.
Long-term Storage: Low-temperature storage tanks can be used 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 the liquid substances can be slowed down, maintaining their stability and purity.
Safety: Low-temperature storage tanks feature excellent safety performance. The tanks are made with special materials and structural designs to withstand low temperatures and high pressures. 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 applications, they are suitable for storing liquefied natural gas (LNG) and other process gases like liquid nitrogen; in the scientific research field, they can store low-temperature experimental samples.
Environmental Protection and Energy Saving: 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 substances, energy loss is minimized, improving energy utilization efficiency.
In summary, low-temperature storage tanks offer advantages such as storage, long-term storage, safety, multi-industry applications, and environmental protection and energy conservation. This makes them a crucial equipment for storing and supplying low-temperature materials, playing a significant role in various fields.

Liquid Oxygen Storage Tanks Possess the Following Safety Technical Characteristics:
High-pressure Vessels: Liquid oxygen tanks are high-pressure vessels capable of withstanding high pressure. Their design and manufacture must comply with relevant standards and regulations to ensure the tank's strength and seal integrity.
Low Temperature Storage: Liquid oxygen tanks are used for storing liquid oxygen, with operating temperatures typically around -183 degrees Celsius. The materials and insulation of the tanks must be able to withstand low-temperature environments to prevent evaporation of the liquid oxygen and the penetration of external heat.
Fireproof Design: Liquid oxygen has a high oxygen content, which is prone to causing fires. The design of liquid oxygen storage tanks must incorporate fire prevention measures, such as setting up firewalls and using fire-resistant coatings, to prevent the occurrence and spread of fires.
Leak Control: Leaks in liquid oxygen tanks can lead to increased oxygen concentrations, raising the risk of fire and explosion. Tanks must be equipped with leak detection and alarm systems to promptly detect and control leaks, and to implement appropriate emergency measures.
Electrostatic Protection: The accumulation of static electricity in liquid oxygen tanks may cause sparks, increasing the risk of fire. Tanks must be equipped with static-conductive materials and anti-static devices to reduce the accumulation and release of static electricity.
Safety valves and pressure control: Liquid oxygen storage tanks must be equipped with safety valves and pressure control devices to ensure that the internal pressure of the tank remains within a safe range. When the pressure exceeds the set value, the safety valve will automatically release pressure to protect the tank's safety.
Regular inspections and maintenance: Liquid oxygen tanks require regular inspections
Our company attaches great importance to technological innovation and research and development, boasting 1 city-level enterprise technology center in Heze City. We have established testing facilities for non-destructive testing, physical and chemical testing, welding testing, hydrostatic testing, and more. We are equipped with over 600 types of equipment, including CNC machine tools, X-ray flaw detectors, digital ultrasonic flaw detectors, mechanical property testing machines, chemical analyzers, spectrometers, tensile testing machines, plasma welding machines, and others. The key products and technologies we have developed, such as temperature and pressure vessel welding, biomass boiler emission reduction, and waste heat utilization, have successively been selected for multiple Shandong Provincial Department of Industry and Information Technology scientific and technological innovation projects, Shandong Provincial key projects, and Heze City innovative and excellent projects. We have cumulatively obtained 27 authorized utility models, 16 authorized inventions, participated in drafting 2 standards, 2 industry standards, and registered 15 trademarks. The technical team of our company, in collaboration with Professor Yajiang Li from Shandong University, has developed deep cryogenic container processing technology, utilizing the international plasma arc + filler wire argon arc welding (PAW-GTAW) technology. After being appraised by the provincial level scientific and technological achievement, our technology level has reached an international standard in the field of deep cryogenic container manufacturing. Choose Zhongjie Special Equipment, and let's create brilliance together!