Shandong Zhongjie Special Equipment (formerly Heze Boiler Factory Co., Ltd.) was established in 2001, located at No. 2218 Jinnan Road, Development Zone, Heze City, with a registered capital of 50 million yuan and total assets of 500 million yuan. The company has 7 business centers: boilers, deep-freezing containers, pressure vessels, central air conditioning, engineering installation, international trade, and Internet of Things. It has three factory sites on Jinnan Road, East Changjiang Road, and Bohai Road, covering a total of 200,000 square meters, with the main workshop spanning 83,000 square meters. It currently employs 710 people, including 247 engineers and technicians, and 82 intermediate-level technicians. In December 2016, it was recognized as a "High-Tech Enterprise" by the Science and Technology Department. In June 2021, it was identified as a "Specialized and New Enterprise in Shandong Province" by the Ministry of Industry and Information Technology. In June 2022, it was recognized as a "Gazelle Enterprise in Shandong Province" and in August 2022, as a "Specialized and New Small Giant Enterprise" by the Ministry of Industry and Information Technology.
The safe operation of low-temperature CO2 storage tanks is primarily crucial in the following aspects: Design and Manufacturing: The tank's design and construction must comply with relevant standards and regulations to ensure they can withstand working conditions under low temperatures and high pressures. The tank should have sufficient strength and sealing performance to prevent leaks and ruptures. Safety Valves and Pressure Control: The tank should be equipped with safety valves and pressure control devices to ensure internal pressure remains within safe limits. Safety valves should be inspected and tested regularly to ensure proper functioning. Temperature Control: Effective temperature control is necessary for low-temperature CO2 storage tanks to prevent freezing or embrittlement due to excessively low temperatures. Appropriate insulation materials and equipment should be used to maintain the tank and pipeline temperatures within safe ranges. Leak Detection and Alarm: The tank should be fitted with leak detection equipment and an alarm system, along with corresponding monitoring devices. These devices can detect leaks promptly and trigger alarms for appropriate action. Safe Operation and Training: Operators should receive relevant training to understand the safe operation procedures and standards for low-temperature CO2 storage tanks. Operators should be familiar with the tank's characteristics, working principles, and emergency response measures. Regular Inspections and Maintenance: Tanks should be regularly inspected and maintained, including visual inspections, anti-corrosion coating maintenance, and leak detection. Regular inspections can identify potential issues early and allow for appropriate repair measures. Emergency Preparedness: Establish an emergency response plan and equip with appropriate fire extinguishing and first-aid equipment. Operators should be familiar with emergency procedures and capable of responding swiftly to emergencies. Please note that the above points are general recommendations. Specific safe operation should be based on the design and usage requirements of the low-temperature CO2 storage tank. Before using the tank, it is recommended to refer to relevant safety operation manuals and guidelines to ensure operational safety.

In the event of a CO2 storage tank leak, immediate action should be taken as follows: Ensure personnel safety: First, ensure people quickly evacuate the leak area and move away from any potential dangers. If necessary, use appropriate personal protective equipment such as respirators and protective suits. Cut off the gas supply: As soon as possible, cut off the CO2 supply source to stop further leakage. Close the relevant valves or switches, or disconnect the connection to the tank. Prevent fire sources: Ensure there are no open flames or other potential heat sources that could cause a fire in the leak area. In the event of a fire risk, take immediate appropriate fire-fighting measures. Ventilation treatment: Turn on ventilation equipment to increase air circulation, which helps dilute and expel the leaked CO2 gas. Ensure the proper operation of ventilation equipment and that the ventilation system does not introduce CO2 gas to other areas. Seal the leak points: If possible, try to seal the leak points using suitable materials or methods to reduce or stop the leakage. This may require assistance from personnel. Notify relevant departments: Report the leak situation to the relevant emergency departments, environmental protection departments, or related agencies in a timely manner and follow their instructions. Please note that handling CO2 storage tank leaks is a dangerous task and should be performed by trained and experienced personnel. Always follow relevant safety operation procedures and guidelines during the handling process.

The liquid level of a carbon dioxide tank varies depending on specific design and operational requirements. Generally, the liquid level in a liquid carbon dioxide tank is typically 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 provides steam space inside the tank, preventing 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.

Technical specifications for carbon dioxide storage tanks can be established based on different application fields and/or regional standards. Below are some common technical specifications and standards for reference: - ASME Standards: The American Society of Mechanical Engineers (ASME) has issued a series of standards for pressure vessels, including specifications for carbon dioxide storage tanks, such as ASME BPVC Section VIII Division 1 and ASME BPVC Section VIII Division 2. - ISO Standards: The International Organization for Standardization (ISO) has published some standards related to pressure vessels, such as ISO 9809-1 and ISO 9809-2, covering design, manufacturing, and inspection requirements for steel gas cylinders. - GB Standards: The China National Bureau of Standards has issued a series of standards related to pressure vessels, such as GB 150 "Pressure Vessels" and GB 5099 "Steel Gas Cylinders," including design, manufacturing, and inspection requirements for carbon dioxide storage tanks. - DOT Standards: The United States Department of Transportation (DOT) has issued some standards related to pressure vessels and cylinders, such as DOT-3AA and DOT-4BA, covering design, manufacturing, and transportation requirements for liquefied gas storage tanks. - EN Standards: The European Committee for Standardization (CEN) has published some standards related to pressure vessels, such as EN 13445 and EN 14382, covering design, manufacturing, and inspection requirements for liquefied gas storage tanks. - Additionally, there may be other industry standards and specifications applicable to carbon dioxide storage tanks based on specific application needs, such as standards related to the food and beverage industry, and industry-specific standards. When using carbon dioxide storage tanks, it is essential to select appropriate technical specifications based on specific application requirements and local regulations, ensuring that the design, manufacturing, and use of the tanks comply with the relevant standards and specifications.
Our company attaches great importance to technological innovation and R&D, boasting 1 municipal-level enterprise technology center in Heze City. We have established testing facilities for non-destructive testing, physical and chemical testing, welding testing, hydrostatic testing, etc. Equipped with 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, and more, our developed key products such as welding of temperature and pressure vessels, biomass boiler emissions 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 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. Our technical team, in collaboration with Professor Yajiang Li of Shandong University, has developed deep cryogenic vessel processing technology using the internationally recognized plasma arc + filler wire tungsten inert gas welding (PAW-GTAW) technique. After provincial-level scientific and technological achievement evaluation, the technology level has reached international standards in the field of deep cryogenic vessel manufacturing. Choose Zhongjie Special Equipment, let's join hands to create brilliance!