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 license, and GB2/Class, GC2/Class pressure pipeline installation license, as well as a mechanical and electrical equipment installation contracting qualification. 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. The company has also passed the ISO9001 Quality Management System, ISO14001 Environmental Management System, OHSAS18001 Occupational Health and Safety Management System certifications, and the American ASME/U2 certification.
Leakage issues 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 seal and resulting in leakage. Welding Defects: The welding joints of the tank may have defects, such as cracks in the weld seams or pores. These defects can weaken the strength of the welded areas, leading to leakage. Design Defects: Inadequate design or defects in the tank may also cause leakage. For example, improperly designed interfaces or unreasonable structural designs can lead to leakage problems 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, due to thermal expansion and contraction, CO2 storage tanks may deform or experience stress concentration, leading to leakage. Improper Operation: Incorrect operation and maintenance may also cause leakage in the tank. For example, over-tightening valves or improper maintenance measures can reduce 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 adhere to operational procedures to ensure the safe operation of the tank.

In accordance with China's "Regulations for Safety Supervision of Pressure Vessel Technology," carbon dioxide storage tanks are classified as Category II pressure vessels. Under these regulations, pressure vessels are categorized as follows: - Category I pressure vessels: Pressure vessels with operating pressures of 10 MPa (megapascals) or higher, such as steam boilers and pressure vessels. - Category II pressure vessels: Pressure vessels with operating pressures between 0.1 MPa and 10 MPa, such as air compressors and liquefied gas storage tanks. - Category III pressure vessels: Pressure vessels with operating pressures between 0.05 MPa and 0.1 MPa, such as storage tanks. - Category IV pressure vessels: Pressure vessels with operating pressures below 0.05 MPa, such as gas cylinders. Based on this classification, carbon dioxide storage tanks typically have operating 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 different regions' regulations and standards. When using and managing carbon dioxide storage tanks, it is essential to comply with the corresponding regulations and standards.

When using CO2 storage tanks, please note the following points: Safety Operation: When using CO2 storage tanks, it is mandatory to follow relevant safety operating procedures and standards. Operators should receive training to understand the characteristics, operational requirements, and safety measures of the tanks, and operate strictly according to the procedures. Tank Inspection: Regularly inspect the tank's appearance, sealing, valves, and pipeline connections to ensure the integrity and safety of the tank. In case of any abnormalities or damage, repairs or replacements should be carried out promptly. Pressure Control: The tank pressure should be controlled 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: CO2 storage tanks typically need to be maintained at low temperatures. Ensure the proper functioning of cooling equipment, and regularly check and calibrate temperature sensors to maintain appropriate storage temperatures. Leak Protection: CO2 is a gas prone to leakage, which can cause safety risks and environmental pollution. Ensure the sealing of tanks and pipelines, regularly inspect and replace seals, and promptly address any leak situations. Fire and Explosion Prevention: Avoid open flame activities near the tank to prevent fire sources from coming into contact with 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 carry out maintenance and inspections of the tank, including cleaning, coating, and other related tasks.

Carbon Dioxide Storage Tank Commissioning typically involves the following steps and contents: Tank Installation Inspection: Verify that the tank's installation location, foundation, and support structure meet design requirements to ensure stability and safety. Pipeline Connection Inspection: Check the integrity of the tank's connections to inlet and outlet pipelines, and ensure valves and pipes are functioning properly to maintain system completeness and operation. Tank Cleaning and Emptying: Before commissioning, clean and empty the tank to ensure no impurities, residues, or other gases/liquids are inside. Tank Pressure Testing: Conduct pressure tests on the tank, including static pressure testing and leakage testing. Static pressure testing involves increasing pressure to examine the tank's sealing and pressure resistance. Leakage testing checks for any leaks in the tank and pipeline system. Control System Commissioning: Calibrate and adjust the tank's control system, including pressure, temperature, and level sensors, to ensure accuracy and reliability. Safety System Testing: Test the tank's safety system, including safety valves, pressure gauges, and level indicators, to ensure proper operation and response. Operating Parameter Adjustment: Adjust the tank's operating parameters, such as pressure, temperature, and level, according to actual needs and process requirements to meet safety and operational standards. Documentation and Reporting: Record and organize data, test results, and operational records during commissioning to generate a report for future reference and management. The above steps and contents are general for carbon dioxide storage tank commissioning, with specific procedures varying based on tank design and application. Adhere strictly to safety operating procedures and standards during commissioning to ensure safety and effectiveness.
Zhongjie Special Equipment upholds the grand vision of "realizing employees' dreams, creating value for customers, and striving for the prosperity and strength of our motherland," and is dedicated to the development of the green energy equipment industry. We offer products and services with high cost-performance to contribute to society!