Shandong Zhongjie Special Equipment (formerly Heze Boiler Factory Co., Ltd.) holds an A-grade boiler manufacturing license and an A2-grade pressure vessel manufacturing license, an A2-grade pressure vessel design license, a B-grade boiler installation license, and GB2/Class and GC2/Class pressure pipeline installation licenses, 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 the理事 unit 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 some corrosive properties, and prolonged 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 leading to leakage. Welding Defects: The welding joints of the tank may have defects, such as cracks in the welds or blowholes, which can weaken the strength of the焊接 area, causing leakage. Design Defects: Inadequate design or defects in the tank may also result in leakage. For example, poorly designed interface connections or unreasonable structural designs can lead to leakage issues. Overpressure: If the internal pressure of the tank exceeds its capacity, it may deform or rupture, causing leakage. Temperature Fluctuations: During temperature changes, the thermal expansion and contraction effect on CO2 storage tanks may cause deformation or stress concentration, leading to leakage. Incorrect Operation: Improper operation and maintenance can also cause tank leakage. For instance, 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 can cause surface damage or corrosion, leading to leakage. To avoid leakage issues in CO2 storage tanks, it is essential to select appropriate materials, reasonable design, and manufacturing processes, and to conduct regular inspections and maintenance. Additionally, operators should receive training and adhere to operational procedures to ensure the safe operation of the tanks.

CO2 flooding is a commonly used technology to enhance oil recovery, aimed at improving the extraction rate of oilfields. It works by injecting CO2 gas into the reservoir to alter its physical and chemical properties, thereby promoting fluid flow and increasing recovery rates. The working principle of CO2 flooding is as follows: - Dissolution Principle: CO2 has a high solubility in oil. When CO2 gas is injected into the reservoir, it dissolves in the oil, reducing viscosity and surface tension, making it more fluid. - Expansion Displacement Principle: After CO2 gas is injected into the reservoir, it expands to form a gas phase, increasing internal pressure and pushing oil towards the wellbore. Additionally, CO2's high permeability can improve reservoir permeability, enhancing fluid flow. - Chemical Reaction Principle: CO2 reacts with certain components in the oil, forming soluble substances, which further reduces viscosity and improves fluidity. CO2 flooding technology offers certain advantages in oilfield development, such as: - Environmental Protection: CO2 is a natural, clean, and renewable gas. Using CO2 flooding can reduce environmental pollution. - Economic Viability: CO2 flooding can increase oil recovery rates and production, thus enhancing economic benefits. - Sustainability: CO2 can be separated from the atmosphere or captured and stored from industrial flue gases, enabling the cyclic utilization of CO2 and offering sustainability. It is important to note that the application of CO2 flooding technology requires consideration of reservoir characteristics, geological conditions, and economic feasibility. Before implementing CO2 flooding, a comprehensive reservoir evaluation and engineering design must be conducted to ensure the effectiveness and safety of the technology.

When cooling carbon dioxide storage tanks, be mindful of the following considerations and familiarize yourself with the basic steps of the cooling process: **Considerations:** - **Safety:** Pay attention to safety during the cooling process to ensure the safety of operators and the surrounding environment. Adhere to relevant safety operation procedures and standards, and use appropriate personal protective equipment. - **Equipment Selection:** Choose the appropriate cooling equipment and tools, such as cooling mediums (e.g., liquid nitrogen), coolers, and cooling systems. Select suitable cooling equipment based on the tank's size and requirements. - **Temperature Control:** Control the temperature during the cooling process to avoid overcooling or insufficient temperature. Determine the appropriate cooling temperature range based on the tank's design requirements and operating conditions. **Cooling Process Analysis:** - **Preparation:** Ensure there are no residual gases or impurities inside the tank to avoid affecting the cooling effect. Check the tank's sealing and the functioning of the safety valves. - **Cooling Medium Injection:** Inject the cooling medium (e.g., liquid nitrogen) into the tank to lower the tank's temperature. Control the injection speed and amount to avoid overinjection, which can lead to excessive pressure. - **Cooling Time:** Determine the cooling time based on the tank's size and requirements. The cooling time typically needs to be long enough to ensure that the carbon dioxide inside the tank is fully cooled and liquefied. - **Temperature Monitoring:** Regularly monitor the tank's temperature during the cooling process to ensure it remains within the appropriate range. Use temperature sensors or infrared thermometers for monitoring. - **Cooling Completion:** The cooling process is complete when the tank's temperature reaches the predetermined cooling requirements. At this point, the carbon dioxide inside the tank should be in a liquid state. **Note:** The specific cooling process and steps may vary depending on the tank's design and application scenarios. When performing cooling operations, follow relevant safety operation procedures and standards to ensure safety and effectiveness.

When spraying on CO2 storage tanks, the following issues should be taken into consideration: - Surface Preparation: Prior to spraying, thorough surface preparation of the tank is essential. This includes cleaning the surface, removing grease, dirt, and old coatings to ensure the adhesion and quality of the paint. - Paint Selection: Choosing the right paint for CO2 storage tanks is crucial. The paint should be corrosion-resistant, heat-resistant, and chemically-resistant to protect the tank surface from corrosion and damage. - Spraying Techniques: The selection and operation of spraying techniques are vital for the quality and uniformity of the coating. Appropriate spraying equipment and methods should be chosen to ensure the paint covers the entire tank surface evenly, avoiding drips and runs. - Coating Thickness: The thickness of the coating is critical for the tank's protective effectiveness. The coating thickness should be controlled according to the paint requirements and the tank's operating environment to ensure the protective performance and lifespan of the coating. - Drying and Curing: After the coating is applied, sufficient time must be allowed for drying and curing. Follow the correct drying time and conditions as per the paint requirements to ensure the quality and performance of the coating. - Safety Measures: Appropriate safety measures must be taken during the spraying process, including wearing protective eyewear, respirators, and protective clothing to ensure the safety of the operators. - Quality Inspection: After the spraying is completed, a quality inspection should be conducted, including the appearance, adhesion, and thickness of the coating. Any issues or defects should be addressed and repaired promptly. It is important to note that spraying CO2 storage tanks should be performed by professionals.
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 society high-quality and cost-effective products and services!