Shandong Zhongjie Special Equipment Co., Ltd. (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-freeze vessels, pressure vessels, central air conditioning, engineering installation, international trade, and the Internet of Things. It has three manufacturing sites on Jinnan Road, East Changjiang Road, and Bohai Road, covering a total area of 200,000 square meters, with the main workshop spanning 83,000 square meters. It currently employs 710 staff, 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, it was identified as a "Specialized and New Small Giant Enterprise" by the Ministry of Industry and Information Technology.
When using carbon dioxide storage tanks, the following protective procedures must be followed to ensure safety: Tank Operator Training: All operators must receive training to understand the characteristics, operational requirements, and safety measures of carbon dioxide storage tanks. The training should include safe tank operation, leak handling, emergency procedures, etc. Safety Operating Procedures: Establish and adhere to relevant safety operating procedures, including the start-up, shutdown, inspection, and maintenance of the tank. Operators should operate according to the procedures to ensure the safe operation of the tank. Leak Handling: Implement a leak handling program including leak alarms, emergency shutdown, and isolation of the leak source. Operators should be familiar with the leak handling procedures and be able to respond quickly and correctly to leak incidents. Fire Prevention Measures: Carbon dioxide is flammable; therefore, fire prevention measures must be observed during use. Smoking, open flame operations, or placing flammable materials near the tank are prohibited. Ensure that fire protection facilities around the tank are in good condition and conduct fire drills regularly. Waste Gas Emission: Properly discharge waste gases produced when using carbon dioxide storage tanks to avoid the accumulation of carbon dioxide in enclosed spaces, which could lead to asphyxiation and safety risks. Ensure that the waste gas emission system is unobstructed and functioning properly. Regular Inspection and Maintenance: Regularly inspect the tank's exterior, sealing, valves, and pipeline connections. If abnormalities or damage are found, repair or replacement should be carried out promptly. Additionally, regularly inspect and maintain safety valves, pressure sensors, and other accessories. Emergency Response Plan: Develop and implement an emergency response plan, including the handling of leak incidents, evacuation procedures, and first aid measures. Operators should be familiar with the emergency response plan and conduct drills regularly. Monitoring and Alarm Systems: Install and maintain monitoring and alarm systems for the storage tanks.

Technical specifications for carbon dioxide storage tanks can be formulated based on different application fields and/or regional standards. The following 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 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 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, other industry standards and specifications may apply to carbon dioxide storage tanks based on specific application needs, such as relevant standards in the food and beverage industry, etc. When using carbon dioxide storage tanks, appropriate technical specifications should be selected 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.

Carbon dioxide (CO2) and liquid oxygen (LOX) storage tanks are equipment used for storing different gases. They have some physical differences: - Physical State: CO2 is a gas at room temperature and requires low temperatures and high pressures to convert to a liquid. LOX is a liquid at room temperature and can remain in liquid form without special conditions. - Storage Temperature: The liquid CO2 storage temperature typically ranges from -40°C to -78.5°C, while the liquid oxygen storage temperature usually ranges from -183°C to -183.15°C. The storage temperature for LOX is lower and requires more stringent insulation measures. - Storage Pressure: The liquid CO2 storage pressure is generally between 5-20 MPa, while the liquid oxygen storage pressure is typically between 0.2-2 MPa. The storage pressure for LOX is lower. - Density: The density of liquid CO2 is approximately 0.8 g/cm³, while the density of liquid oxygen is about 1.14 g/cm³. The density of liquid oxygen is greater. - Safety: LOX has a high oxygen content, making it highly flammable and oxidizing, necessitating stricter safety measures. CO2 is relatively safe but can still pose health risks at high concentrations.

When using carbon dioxide tanks, pay attention to the following aspects: - Safe Operation: Operators must be trained to understand the characteristics, operational requirements, and safety measures of carbon dioxide tanks. Adhere to relevant safety operation procedures and standards to ensure operational safety. - Tank Inspection: Regularly inspect the tank's appearance, seals, valves, and pipeline connections before use. Repair or replace promptly if any abnormalities or damage are found. - Tank Placement: Place the tank in a well-ventilated, dry, and fire-free area. Avoid direct sunlight and high-temperature environments to prevent overheating. - Leak Prevention: Ensure that the valves and pipeline connections of the tank are sealed properly to prevent carbon dioxide leaks. Regularly check and replace seals, and address leaks promptly. - Pressure Control: The internal pressure of the tank should be within a safe range. Check the tank's pressure gauge and safety valve before use to ensure proper functioning. Avoid excessive or low pressure to prevent safety accidents. - Fire Prevention Measures: Carbon dioxide is flammable, so fire prevention measures should be taken during use. Smoking, open flame operations, or placing flammable items near the tank are prohibited. - Exhaust Emission: Properly discharge exhaust gases produced when using carbon dioxide tanks to avoid carbon dioxide accumulation in enclosed spaces, which can lead to asphyxiation and safety risks. - Emergency Response Plan: Develop and implement an emergency response plan, including procedures for leak incidents, evacuation, and first aid measures. Operators should be familiar with the plan and conduct regular drills. Note that carbon dioxide tanks should only be used by trained personnel and in accordance with relevant safety operation procedures and standards. Seek advice and guidance from experts.
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