Shandong Zhongjie Special Equipment (formerly Heze Boiler Factory Co., Ltd.) holds an A-grade boiler manufacturing license, an A2-grade pressure vessel manufacturing license, an A2-grade pressure vessel design license, a B-grade boiler installation license, and GB2/Class, GC2/Class pressure pipeline installation licenses, as well as an equipment and machinery installation contracting qualification. It is a member of the China Boiler and Water Treatment Association, the China Chemical Equipment Association, and the Council Member of the Shandong Equipment Manufacturing Association. The company has also passed certifications for the ISO9001 Quality Management System, ISO14001 Environmental Management System, OHSAS18001 Occupational Health and Safety Management System, and the American ASME/U2 certification.
Leakage defects in CO2 storage tanks may be caused by the following reasons: Material Corrosion: CO2 has a certain degree of corrosiveness, and long-term contact may lead to corrosion of the tank material. Corrosion can damage the tank's surface protective layer, causing it to lose its sealability and resulting in leakage. Welding Defects: Welding joints of the tank may have defects such as weld cracks and pores, which can reduce the strength of the welding area and cause leakage. Design Defects: Inadequate design or defects in the tank may also lead to leakage. For example, improperly designed interfaces and unreasonable structural designs can all lead to leakage issues in the tank. Overpressure: If the internal pressure of the tank exceeds its capacity, it may cause deformation or破裂, leading to leakage. Temperature Fluctuations: During temperature changes, the thermal expansion and contraction effect of CO2 storage tanks may cause deformation or stress concentration, leading to leakage. Incorrect Operation: Incorrect operation and maintenance may also cause leakage in the tank. For example, over-tightening valves and improper maintenance measures can all lead to a decrease in the tank's sealing performance. External Damage: External forces such as impacts, scratches, or corrosion on the tank may cause surface damage or corrosion, leading to leakage. To avoid leakage issues in CO2 storage tanks, select appropriate materials, reasonable design, and manufacturing processes, and conduct regular inspections and maintenance. At the same time, operators should receive training and follow operational procedures to ensure the safe operation of the tank.

According to China's "Regulations for the Safe Supervision of Pressure Vessel Technologies," carbon dioxide storage tanks are classified as category II pressure vessels. The Regulations categorize pressure vessels into the following types: - Category I pressure vessels: Pressure vessels with working pressures of 10 MPa (MegaPascals) or more, such as steam boilers and pressure vessels. - Category II pressure vessels: Pressure vessels with working pressures between 0.1 MPa and 10 MPa, such as air compressors and liquefied gas storage tanks. - Category III pressure vessels: Pressure vessels with working pressures between 0.05 MPa and 0.1 MPa, such as storage tanks. - Category IV pressure vessels: Pressure vessels with working pressures less than 0.05 MPa, such as gas cylinders. Based on this classification, carbon dioxide storage tanks typically have working pressures above 0.1 MPa, thus falling under category II pressure vessels. It's important to note that specific classification criteria may vary depending on regional regulations and standards. When using and managing carbon dioxide storage tanks, it's crucial to adhere to the relevant regulatory and standard requirements.

When using CO2 storage tanks, the following points should be noted: - Safe Operation: When using CO2 storage tanks, it is mandatory to follow relevant safety operation 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, seals, valves, and pipeline connections to ensure the tank's integrity and safety. Any abnormalities or damage 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 and safety valves to ensure the proper functioning of the pressure control system. - Temperature Control: CO2 storage tanks typically require maintaining a low temperature. Ensure the cooling equipment operates correctly, and regularly check and calibrate temperature sensors to maintain appropriate storage temperatures. - Leak Protection: CO2 is a gas that is prone to leakage, which can lead to safety risks and environmental pollution. Ensure the tank and pipeline seals are intact, regularly inspect and replace seals, and address any leaks promptly. - Fire and Explosion Prevention: Avoid open flame activities near the tank to prevent fire sources from contacting CO2. Maintain good ventilation around the tank to prevent CO2 accumulation. - Waste Disposal: Disposed CO2 storage tanks or residues should be handled in accordance with relevant regulations and standards. Adhere to environmental protection requirements to ensure safe disposal of waste and environmental protection. - Regular Maintenance: Regularly maintain and inspect the tank, including cleaning and painting, to ensure proper operation.

Carbon dioxide storage tank debugging typically involves the following steps and contents: 1. Tank Installation Check: Verify that the tank's installation location, foundation, and supporting structure meet design requirements, ensuring the tank's stability and safety. 2. Pipe Connection Check: Inspect the tank's connection to inlet and outlet pipes for firmness, and that valves and pipes open and close properly, ensuring the integrity and normal operation of the piping system. 3. Tank Cleaning and Draining: Clean and drain the tank before debugging to ensure no impurities or residues are present inside, as well as no other gases or liquids. 4. Tank Pressure Test: Conduct pressure tests on the tank, including static pressure and leak tests. The static pressure test checks the tank's sealing and pressure resistance by increasing pressure. The leak test checks for any leaks in the tank and piping system. 5. Control System Debugging: Tune the tank's control system, including calibration and adjustment of pressure, temperature, and level sensors, ensuring the accuracy and reliability of the control system. 6. Safety System Testing: Test the tank's safety system, including functional tests of safety valves, pressure gauges, and level indicators, ensuring the normal operation and response of the safety system. 7. Operating Parameter Adjustment: Adjust the tank's operating parameters, such as pressure, temperature, and level, according to actual needs and process requirements to meet process specifications and safe operation. 8. Documentation and Reporting: Record and organize data, test results, and operational records during the debugging process, generating a debugging report for future reference and management. The above steps and contents are general for carbon dioxide storage tank debugging operations. Specific debugging procedures may vary based on tank design requirements and application scenarios. When performing debugging operations, strictly adhere to relevant safety operating procedures and standards to ensure the safety and effectiveness of the debugging process.
Chongjie Special Equipment adheres to the grand vision of "realizing employees' dreams, creating customer value, and striving for the prosperity and strength of our motherland," and is dedicated to the development of green energy equipment. We commit to society with high-quality, cost-effective products and services!