Shandong Zhongjie Special Equipment's main products include: 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 storage tanks, oxygen/nitrogen/argon storage tanks, and CO2 storage tanks; pressure vessel products like denitrification engineering equipment, heat storage and energy storage equipment, and complete chemical equipment; as well as 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, and LNG tank containers, among other green energy equipment.
The liquid level of a carbon dioxide tank will vary depending on specific design and operational requirements. Generally, the liquid level in a liquid carbon dioxide tank is maintained between 80% and 95%. There are several reasons for keeping the tank level within this range: - Space Reserve: Maintaining a certain level of liquid space provides steam space within the tank to prevent overpressure and the risk of tank explosion. - Storage Capacity: Keeping a higher level maximizes the tank's capacity, allowing for more carbon dioxide storage. - Stable Supply: Maintaining an appropriate level ensures a stable supply of carbon dioxide to meet usage demands. However, specific level requirements may vary depending on different applications and industries. When using a carbon dioxide tank, it is essential to follow the manufacturer's recommendations and relevant regulations and standards to ensure the tank's level is controlled within a safe and appropriate range.

When using a 50-cubic-liter liquid oxygen tank, the following safety precautions should be taken: - Fire and Explosion Prevention: Liquid oxygen is highly oxidizing and can support combustion. Avoid contact and ensure there are no open flames or other ignition sources nearby. - Ventilation: Liquid oxygen evaporation produces a large amount of oxygen, so good ventilation around the tank is essential to prevent oxygen buildup and the risk of explosion. - Avoid High Temperatures: Liquid oxygen may ignite or explode when in contact with high-temperature objects. Avoid exposing the tank to high-temperature environments and prevent contact with hot objects. - Prevent Overpressure: Use the liquid oxygen tank according to its designed pressure and flow rates, and avoid exceeding its capacity. Regularly inspect and maintain the safety valve to ensure proper functioning and prevent overpressure. - Prevent Corrosion: Regularly inspect and maintain the tank to prevent corrosion issues, especially on the tank surface and contact areas. Keep the area dry and clean to avoid corrosion. - Safe Operation: Operators should receive training on safe operation procedures and standards for liquid oxygen tanks. Follow proper operational protocols, wear personal protective equipment, and ensure safety during operations. - Emergency Preparedness: Establish an emergency plan when using the liquid oxygen tank and equip it with appropriate fire extinguishing and first aid supplies. Operators should be familiar with emergency procedures and able to respond quickly to emergencies. - Note that the above safety precautions are general suggestions. Specific safe operation should be based on the tank's design and usage requirements. Before using the liquid oxygen tank, it is recommended to refer to relevant safety operation manuals and guidelines to ensure safety.

Carbon dioxide storage tanks fall under the category of pressure vessels. Pressure vessels are sealed containers capable of withstanding internal pressure, used for storing and transporting gases, liquids, or mixtures. Carbon dioxide storage tanks are pressure vessels designed specifically for storing and transporting carbon dioxide, featuring unique designs and structures to ensure safe storage and use of the gas. Depending on design and application, carbon dioxide storage tanks can be vertical or horizontal, with varying capacities and pressure ratings. When using carbon dioxide storage tanks, it is necessary to adhere to relevant regulations and standards to ensure safe operation and usage.

Before using the carbon dioxide storage tank, the following preparatory work must be carried out: - Inspect the tank: Check the tank's exterior for any signs of damage, corrosion, or oil leakage. Ensure the structural integrity and safety of the tank. - Check valves and pipelines: Verify that the tank's inlet and outlet valves and pipeline connections are normal, without any leakage or loose fittings. Ensure valve operation is smooth and reliable. - Inspect safety accessories: Check the operation of the tank's safety accessories, such as safety valves, pressure sensors, and temperature sensors. Confirm that their set parameters meet requirements. - Check the level measurement system: Inspect the accuracy and reliability of the level measurement system. Calibrate the level sensors to ensure accurate level measurements. - Inspect pressure relief devices: Check that the tank's pressure relief devices (such as safety valves) are functioning properly. Verify that the set pressure of the pressure relief devices meets requirements. - Check gas quality: Ensure the carbon dioxide gas in the tank meets the required quality standards, free of impurities or contaminants. - Inspect fire protection equipment: Ensure that the fire protection equipment around the tank is in good condition and check that extinguishers, sprinkler systems, etc., are operating normally. - Train operators: Operators should receive training on the characteristics, operation requirements, and safety measures of the carbon dioxide storage tank. Training should include safe operation of the tank, leak handling, and emergency procedures. - These preparatory steps ensure the carbon dioxide storage tank is in good condition before use, and guarantee the safety and reliability of operation. When conducting these preparations, follow relevant safety operating procedures and have personnel perform the operations.
Our company highly values technological innovation and R&D design. We possess 1 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 equipment and instruments, 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. Our key products and technologies, such as thermal pressure vessel welding, biomass boiler emission reduction, and waste heat recovery, have successively been selected for multiple Shandong Province Ministry of Industry and Information Technology scientific and technological innovation projects, key projects of Shandong Province, and Heze City innovation and excellence 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 Li Yajiang of Shandong University, has developed deep cryogenic container processing technology, utilizing the international plasma arc + filler wire tungsten inert gas arc welding (PAW-GTAW) technology. After provincial-level scientific and technological achievement evaluation, the technology level has reached an international standard in the field of deep cryogenic container manufacturing. Choose ZJ Special Equipment, and let's create brilliance together!