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 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.
Liquid oxygen storage tanks are widely used in various industries, primarily in the following aspects:
Industry: Liquid Oxygen Storage Tanks are widely used in various fields for storing and supplying liquid oxygen as fuel and oxidizer. Liquid Oxygen Storage Tanks play a crucial role in engine systems, propulsion systems, and oxygen supply systems.
Chemical Industry: Liquid oxygen storage tanks are used in chemical processes for storing and supplying liquid oxygen, employed in oxidation reactions, combustion reactions, and oxygen supply, etc. Chemical plants, oil refineries, and chemical manufacturers are among the facilities that may utilize liquid oxygen storage tanks.
Industry: Liquid Oxygen Tanks are used in the field for storing and supplying liquid oxygen, employed in oxygen therapy, respiratory support, and surgeries. Liquid Oxygen Tanks are widely used in clinics, nursing homes, and other institutions.
Experimental Research: Liquid Oxygen Tanks are used in scientific research and laboratories to provide liquid oxygen as experimental materials and fuel. Liquid Oxygen Tanks play a significant role in experimental research across various fields such as physics, chemistry, biology, and materials science.
Metalworking Industry: Liquid oxygen tanks are used in the metalworking and welding industries to provide high-purity oxygen for processes such as metal cutting, welding, and heat treatment.
Other Industries: Liquid Oxygen Storage Tanks are also applied in other industries such as the energy, environmental protection, and food industries, etc. They are used in energy production, environmental management, and food processing fields.
It is important to note that the use of liquid oxygen tanks must strictly adhere to relevant safety regulations and operating guidelines to ensure safe operation and usage of the tanks.

Prior to using the liquid oxygen tank, the following preparations must be made:
Safety Inspection: Ensure the tank and its surrounding environment are safe. Check for any damage, leaks, or other potential hazards to the tank. Confirm that there are no flammable materials or other hazardous items in the vicinity of the tank.
Tank Preparation: Inspect the tank's exterior, including the shell, welds, valves, and fittings. Ensure there are no visible damages or corrosion. Check that the insulation layer is intact and undamaged.
Liquid Oxygen Filling: Utilize liquid oxygen delivery equipment to fill the tank with liquid oxygen. Ensure that the flow rate and pressure of the liquid oxygen are maintained within safe limits during the filling process.
Pressure Control: Storage tanks should be equipped with pressure control devices to ensure internal pressure is within a safe range. Inspect and adjust the pressure control devices to ensure proper operation.
Valve Operation: Inspect that the tank valves and connections are functioning properly. Ensure the valves open and close smoothly and reliably. Adjust the valves' open and closed states as required.
Safety Equipment: Inspect the safety equipment around the storage tank, such as fire isolation zones and alarm systems, to ensure they are functioning properly.
Operator Training: Ensure operators are proficient in the safe operation of liquid oxygen storage tanks.

Protection tips for liquid nitrogen tanks include the following:
Wear protective gear: When operating liquid nitrogen tanks, it is mandatory to wear appropriate protective gear, including gloves, protective suits, 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 chilling. Therefore, it is essential to avoid direct contact with liquid nitrogen, especially with the skin. Use tools or instruments for handling to prevent direct hand contact with liquid nitrogen.
Ensure good ventilation: In the operational area of the liquid nitrogen storage tank, it is essential to maintain adequate ventilation to expel gases produced by the evaporation of liquid nitrogen. Keep air flowing to avoid high oxygen concentrations, reducing the risk of fire and explosion.
Prevent Leaks: Regularly inspect the liquid nitrogen storage tank for leaks and equip with leak detectors 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: Nitrogen liquid has a low boiling and freezing point, which is prone to fire. To prevent and contain fires, firewalls and fire-resistant coatings are set up around the nitrogen liquid storage tanks.
Static Protection: The accumulation of static electricity in liquid nitrogen tanks may cause sparks, increasing the risk of fire. Measures such as using static-conductive materials and anti-static equipment should be taken to reduce the accumulation and release of static electricity.
Regular Inspections and Maintenance: Conduct regular checks on the condition of liquid nitrogen storage tanks and associated equipment, including valves, pipes, pressure gauges, etc. Ensure that the equipment is in perfect condition without any damage, and promptly repair or replace any damaged parts.
Waste Gas Treatment: Liquid nitrogen tanks produce waste gas during use, which must be properly treated.

Liquid nitrogen tanks are widely used in meat freezing. Here are several main applications of liquid nitrogen tanks in meat freezing:
Quick Freezing: Liquid nitrogen tanks can provide low temperatures for rapid freezing of meat to the required temperature. Due to the low-temperature properties of liquid nitrogen, meat temperature can be rapidly reduced in a short time, effectively preserving the quality and texture of the meat.
Cryogenic Storage: Liquid nitrogen tanks are suitable for long-term freezing storage of meat products. Placing meat in a liquid nitrogen tank maintains it at low temperatures, preventing the growth of bacteria and microorganisms, and extending the shelf life of the meat.
Chilled Transportation: Liquid nitrogen tanks are suitable for the cold transport of meat products. Placing meat in a liquid nitrogen tank maintains its低温 state, ensuring the quality and freshness of the meat during transportation.
Chilled Processing: Liquid nitrogen tanks can be used for meat freezing. By exposing meat to liquid nitrogen, the surface can be quickly frozen, forming a frost layer, thereby preserving the meat's moisture and nutritional content.
Chilled Processing: Liquid nitrogen tanks are suitable for meat freezing processing. Placing meat in liquid nitrogen makes it harder and crispier, facilitating cutting, slicing, and processing.
Be mindful that when using liquid nitrogen tanks for meat freezing, it is crucial to adhere to the relevant safety operating procedures and guidelines. Ensure that operators possess the necessary safety awareness and skills to prevent any accidents. Additionally, consult with food safety authorities.
Our company attaches great importance to technological innovation and R&D design. We possess one municipal-level enterprise technology center in Heze City, equipped with non-destructive testing, physical and chemical testing, welding testing, hydrostatic testing, and other testing facilities. We have over 600 various instruments and 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, etc. 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 science and technology innovation projects, Shandong Provincial key projects, and Heze City innovative and excellent projects. We have cumulatively obtained 27 authorized utility model patents, 16 authorized invention patents, 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 jointly developed deep cryogenic container processing technology using the international plasma arc + wire filling argon arc welding (PAW-GTAW) technology. After the provincial-level scientific and technological achievement identification, the technology level has reached the international standard in the field of deep cryogenic container manufacturing. Choose Zhongjie Special Equipment, and let's create brilliance together!