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 vessels, 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 area of 200,000 square meters, with the main workshop spanning 83,000 square meters. It currently employs 710 people, including 247 engineering and technical staff 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.
Design requirements for carbon dioxide storage tanks typically include the following aspects: Pressure Vessel Design: Carbon dioxide storage tanks are usually 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 materials for the tank should consider the properties of carbon dioxide, such as high pressure, high oxidizability, and corrosiveness. 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 that the internal pressure remains within a safe range. Safety valves should be selected according to design requirements and regularly inspected and tested to ensure proper operation. Insulation Performance: Since 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 equipped with leak detection devices and alarm systems, along with corresponding monitoring equipment. These devices can detect leaks in a timely manner and trigger alarms, allowing for appropriate measures to be taken. Structural Strength and Stability: The structural design of the tank 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 "Design Code for Pressure Vessels." Safe Operation and Maintenance: The design of the tank should take into account the ease of safe operation and maintenance, such as the placement of manholes, inspection openings, and drain outlets.
For the maintenance of CO2 storage tanks, here are some recommended methods:
Regular Inspections: Conduct regular checks of the tank's exterior and interior for signs of corrosion, cracks, and leaks. Non-destructive testing methods, such as ultrasonic testing, can be used to assess the tank's integrity.
Cleaning and Corrosion Protection: Regularly clean the tank's exterior to remove dirt and debris. For tanks coated with corrosion-resistant paint, inspect the coating regularly and repair or recoat as needed to protect against corrosion.
Leak Detection: Perform regular leak inspections to ensure there are no leaks. Use gas detectors or leak detectors for testing, or conduct pressure tests to evaluate the tank's sealing performance.
Safety Valve Inspection: Regularly check and test the functionality of safety valves to ensure they operate correctly under overpressure conditions. Adjust and test according to the specifications and requirements of the safety valves.
Pipe and Valve Maintenance: Regularly inspect and maintain the pipes and valves connected to the tank to ensure proper operation and sealing performance. Clean and lubricate valves, and check for leaks at pipe connections.
Documentation: Record the dates, contents, and results of maintenance, establishing a maintenance record for the tank. Retain relevant documents and reports for future reference and review.
Please note that for the maintenance of CO2 storage tanks, it is recommended to follow relevant safety operating procedures and standards. If you do not possess the necessary knowledge and experience, it is advisable to consult professionals or manufacturers for maintenance work.
The quality of carbon dioxide storage tanks is influenced by several factors:
- Material Quality: The quality of the tank's material directly impacts its corrosion resistance, strength, and sealing performance. Common materials include carbon steel and stainless steel. Choosing high-quality materials can enhance the tank's quality and lifespan.
- Manufacturing Process: The manufacturing process significantly affects the tank's quality. Welding, heat treatment, and surface treatment during production must meet relevant standards and regulations to ensure structural integrity and performance stability.
- Design Specifications: The tank's design must comply with relevant design specifications and standards, such as industry standards. A well-designed tank ensures adequate strength and safety under normal operating conditions.
- Safety Accessories: Safety accessories like safety valves, pressure sensors, and temperature sensors play a crucial role in the tank's quality and safety. Selecting high-quality accessories and ensuring proper installation and adjustment can improve the tank's quality and safety.
- Inspection and Testing: Tanks must undergo inspections and tests during production, including material inspections, weld inspections, and pressure tests. These tests ensure the tank meets quality requirements and complies with safety standards.
- Usage and Maintenance: The tank's usage and maintenance also impact its quality. Correct usage and regular maintenance can extend the tank's lifespan and maintain its optimal working condition.
In summary, the quality of carbon dioxide storage tanks is affected by material quality, manufacturing process, design specifications, safety accessories, inspections and testing, and usage and maintenance. When selecting and using tanks, attention should be given to these factors to ensure quality and safety.
Construction features of carbon dioxide storage tanks mainly include the following aspects:
Material selection: Carbon dioxide storage tanks are typically made of carbon steel or stainless steel to ensure their corrosion resistance and pressure-bearing performance.
Welding technique: The welding technique of the tank is crucial for its quality and safety. The welding technique should comply with relevant standards and specifications to ensure the quality and strength of the welds.
Corrosion prevention measures: Due to the corrosive nature of carbon dioxide, both the internal and external surfaces of the tank should be treated for corrosion prevention. Common corrosion prevention measures include applying anti-corrosion paint, applying a protective layer, or using anti-corrosion coatings.
Safety valves and pressure sensors: The tank should be equipped with safety valves and pressure sensors to monitor and control the internal pressure of the tank, ensuring safe operation.
Proper installation steps for carbon dioxide storage tanks are as follows:
Site preparation: Select a suitable site for installation, ensuring the site is level, stable, and meets safety distance requirements. Clear the site to ensure there are no obstructions or fire sources.
Foundation construction: Construct the foundation based on the size and weight of the tank. The foundation should have sufficient strength and stability to support the tank's weight and pressure.
Tank installation: Place the tank on the foundation, ensuring there is appropriate padding and fastening equipment between the tank and the foundation. Connect and fasten the tank according to its design requirements.
Piping connection: Connect the tank to the piping system as needed. Ensure the connections are sealed properly to prevent leaks.
Safety equipment installation: Install the required safety equipment for the tank, such as safety valves, pressure sensors, and temperature sensors. Ensure these facilities are installed and connected correctly.
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