Shandong Zhongjie Special Equipment Co., Ltd. (formerly Heze Boiler Factory Co., Ltd.) was established in 2001, located at No. 2218 Jinnan Road, Economic and Technological 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 containers, pressure vessels, central air conditioning, engineering installation, international trade, and Internet of Things. It has three factory areas 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. Currently, there are 710 employees, including 247 engineering and technical personnel and 82 intermediate-level technical personnel. 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 Department 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.
Liquid CO2 Filling of Storage Tanks: The process of filling storage tanks with liquid CO2. Here are some precautions to consider when filling CO2 storage tanks:  Safety Operation: Adhere to relevant safety procedures during CO2 tank filling. Operators should be trained and aware of the tank's characteristics and safety concerns to ensure safe operations.  Tank Capacity Control: Ensure that the filling process does not exceed the tank's rated capacity. Overfilling can lead to excessive pressure and increased safety risks.  Filling Rate Control: Maintain a moderate filling rate to avoid both too fast and too slow filling. Excessive speed can cause high internal pressure, while slow speed can prolong filling time.  Temperature Control: Monitor the temperature of the liquid CO2 during filling. High temperatures can cause rapid evaporation, and low temperatures can lead to solidification.  Pressure Control: Control the internal pressure of the tank during filling. Excessive pressure can cause tank rupture or leakage, while low pressure can result in inadequate filling.  Level Monitoring: Regularly monitor the tank's level during filling to ensure accurate measurements and avoid overfilling or underfilling.  Pressure Relief Devices: Equip the tank with pressure relief devices, such as safety valves, to control internal pressure. The set pressure should meet relevant requirements and be inspected and maintained regularly.  Environmental Protection: Be mindful of environmental protection during filling to prevent CO2 leakage and contamination. Use appropriate protective measures, such as sealed connections and protective devices.  These are some precautions to consider when filling CO2 storage tanks. Follow relevant safety regulations and standards during filling operations and consult experts to ensure safety and effectiveness.

When using a 50-cubic-liter liquid oxygen tank, the following safety concerns should be noted: Fire and Explosion Prevention: Liquid oxygen is highly oxidizing and can support combustion. Therefore, avoid contact and ensure there are no open flames or other ignition sources nearby. Ventilation: Evaporation of liquid oxygen 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 can cause combustion or explosion when in contact with high-temperature objects. Thus, avoid exposing the liquid oxygen tank to high-temperature environments or contact with hot objects. Pressure Control: Use the liquid oxygen tank according to its designed pressure and flow rate, avoiding exceeding its capacity. Regularly inspect and maintain the safety valve to ensure proper operation and prevent overpressure. Corrosion Prevention: Regularly inspect and maintain the liquid oxygen tank to prevent corrosion, especially on the tank surface and contact areas. Keep them dry and clean to avoid corrosion. Safe Operation: Operators should receive relevant training to understand the safe operation procedures and standards for liquid oxygen tanks. Follow correct procedures, wear personal protective equipment, and ensure safety. Emergency Preparedness: Establish an emergency plan and equip with appropriate fire extinguishing and first aid equipment when using the liquid oxygen tank. Operators should be familiar with emergency procedures and able to respond quickly to emergencies. Note that the above safety concerns are general recommendations. Specific safety operations should be based on the design and usage requirements of the liquid oxygen tank. Before using the liquid oxygen tank, it is recommended to refer to relevant safety operation manuals and guidelines to ensure safety.

When using carbon dioxide tanks, the following points should be noted: Safety Operation: When using carbon dioxide tanks, it is mandatory to follow relevant safety operating procedures and standards. Operators should receive training to understand the tank's characteristics, operational requirements, and safety measures, and operate strictly according to the procedures. Tank Inspection: Regularly inspect the tank's appearance, sealing, valves, and pipeline connections to ensure the tank's integrity and safety. If any abnormalities or damage are found, they should be repaired or replaced promptly. Tank Pressure Control: The tank's pressure should be maintained within a safe range. Regularly check and calibrate pressure sensors, safety valves, etc., to ensure the normal operation of the pressure control system. Temperature Control: Carbon dioxide tanks typically need to be kept at low temperatures. Ensure the proper operation of cooling equipment, regularly check and calibrate temperature sensors to maintain appropriate storage temperatures. Leak Prevention: Carbon dioxide is a gas prone to leakage, which can lead to safety risks and environmental pollution. Ensure the tank and pipeline sealing, regularly check and replace seals, and handle leak situations promptly. Fire and Explosion Prevention: Avoid open flame operations near the tank to prevent the fire source from contacting carbon dioxide. Maintain good ventilation around the tank to prevent the accumulation of carbon dioxide. Waste Disposal: Disposed carbon dioxide tanks or residues should be handled according to relevant regulations and standards. Comply with environmental protection requirements to ensure the safe disposal of waste and environmental protection. Regular Maintenance: Regularly maintain and inspect the tank, including cleaning and painting.

In the event of a CO2 cylinder leak, the following measures should be taken immediately for handling: Ensure personnel safety: First, ensure that people evacuate the leak area quickly and move away from any potential dangers. If necessary, use appropriate personal protective equipment, such as respirators and protective suits. Cut off the gas source: As soon as possible, shut off the CO2 supply source to stop further leakage. Close the relevant valves or switches, or disconnect from the cylinder. Prevent ignition sources: Ensure there are no open flames or other heat sources that could cause a fire in the leak area. If there is a fire risk, take appropriate fire-fighting measures immediately. Ventilation: Activate ventilation equipment to increase air circulation, which helps dilute and expel the leaked CO2 gas. Ensure the ventilation equipment is operating properly and that the ventilation system does not introduce CO2 gas into other areas. Seal the leak point: If possible, attempt to seal the leak point using suitable materials or methods to reduce or stop the leakage. This may require assistance from personnel. Notify relevant departments: Promptly inform the relevant emergency departments, environmental protection departments, or related agencies, report the leak situation, and act according to their instructions. Please note that handling a CO2 cylinder leak is a dangerous task and should be performed by trained and experienced personnel. Always follow relevant safety operating procedures and guidelines during the handling process.
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