Shandong Zhongjie Special Equipment (formerly Heze Boiler Factory Co., Ltd.) holds an A-grade boiler manufacturing license, A2-grade pressure vessel manufacturing license, A2-grade pressure vessel design license, B-grade boiler installation, and GB2/Class and GC2/Class pressure pipeline installation licenses, as well as mechanical and electrical equipment installation contracting qualifications. It is a member of the China Boiler and Water Treatment Association, the China Chemical Equipment Association, and a council member of the Shandong Equipment Manufacturing Association, and has passed the ISO9001 Quality Management System, ISO14001 Environmental Management System, OHSAS18001 Occupational Health and Safety Management System certifications, as well as the American ASME/U2 certification.
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, disconnect the CO2 supply source to stop further leakage. Close related valves or switches, or disconnect the cylinder. Prevent ignition sources: Ensure there are no open flames or other potential 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 that the ventilation equipment is operating properly and that the ventilation system does not introduce CO2 gas to 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 emergency departments, environmental protection departments, or related agencies of the leak situation and follow their instructions. Please note that handling CO2 cylinder leaks is a dangerous task and should only be performed by trained and experienced personnel. Always follow relevant safety operation procedures and guidelines during the handling process.

Design requirements for carbon dioxide storage tanks typically include the following aspects: - Pressure Vessel Design: Carbon dioxide storage tanks are generally designed as high-pressure vessels capable of withstanding high pressures. The design must comply with relevant standards and regulations, such as Standard GB150 "Steel Pressure Vessels." - Material Selection: The choice of material for the tank should consider the properties of carbon dioxide, such as high pressure, high oxidizing, and corrosive nature. Common materials include carbon steel and stainless steel, with selection based on specific working conditions and requirements. - Safety Valve 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 selected according to design requirements and be inspected and tested regularly to ensure proper operation. - Insulation Performance: As carbon dioxide needs to remain in a liquid state at low temperatures, the tank should have good insulation properties to prevent excessive evaporation of liquid carbon dioxide and energy loss. The selection and design of insulation materials and layers should consider working temperatures and environmental conditions. - Leak Detection and Alarm: The tank should be fitted with leak detection equipment and an alarm system, along with corresponding monitoring devices. These can detect leaks in a timely manner and trigger alarms to enable appropriate actions. - Structural Strength and Stability: The tank's structural design should have sufficient strength and stability to withstand internal pressure and external loads. The structural design must comply with relevant standards and regulations, such as Standard GB12337 "Pressure Vessel Design Specifications." - Safe Operation and Maintenance: The design of the tank should consider the ease of safe operation and maintenance, such as the placement of manholes, inspection ports, and drain outlets.

The reasons for not leaving a carbon dioxide tank empty for long periods are mainly as follows: 1. Safety Risks: Carbon dioxide is a high-pressure gas that maintains its liquid state only under certain pressure within the tank. Releasing the carbon dioxide inside the tank into the atmosphere for a prolonged period can lead to a decrease in tank pressure, potentially causing structural failure or explosions, posing safety risks. 2. Resource Waste: Carbon dioxide is a valuable resource with wide applications in industries and other sectors. Keeping the carbon dioxide tank empty for long periods results in resource waste, which is not in line with sustainable development principles. 3. Environmental Impact: Carbon dioxide is a greenhouse gas, and long-term emptying of the tank can increase its concentration in the atmosphere, exacerbating climate change and environmental issues. Therefore, to ensure safety, save resources, and protect the environment, carbon dioxide tanks should be used and managed according to established procedures and requirements, avoiding long-term empty storage. When carbon dioxide in the tank is no longer needed, appropriate disposal methods such as recycling, reuse, or safe emission should be adopted.

Low-temperature CO2 storage tanks are equipment used for storing and transporting low-temperature liquid CO2. Here are some key points about low-temperature CO2 storage tanks: Tank Structure: These tanks typically feature a double-walled design, with the inner wall for storing liquid CO2 and the outer wall for insulation. The interior is usually made of stainless steel or aluminum alloy, offering excellent corrosion resistance. Storage Temperature: The storage temperature for low-temperature CO2 tanks usually ranges from -40°C to -196°C, depending on specific application requirements. Temperature control is crucial for maintaining the stability and safety of the liquid CO2. Storage Capacity: The capacity of low-temperature CO2 storage tanks can be selected based on actual needs, typically ranging from a few thousand to tens of thousands of liters. The capacity choice should consider storage requirements, supply frequency, and spatial constraints. Safety Protection: These tanks require safety protection devices such as pressure relief valves, pressure sensors, and temperature sensors to ensure internal pressure and temperature remain within safe limits. Transportation: Low-temperature CO2 storage tanks can be transported via road, rail, or ship. Proper insulation measures must be taken during transportation to maintain the low-temperature state of the liquid CO2 inside. Safe Operation: Operation of low-temperature CO2 storage tanks requires training and adherence to safety operating procedures. Operators should be familiar with the tank's characteristics and safety considerations to ensure safe and effective operation. Regular Inspections and Maintenance: Regular inspections and maintenance are necessary for low-temperature CO2 storage tanks, including visual inspections, valve and pipeline checks, and pressure relief device checks. Regular maintenance ensures the tank operates normally and safely. The above points cover some knowledge about low-temperature CO2 storage tanks. When using and operating these tanks, it is essential to follow relevant safety regulations and standards, and consult with experts to ensure safety and effectiveness.
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