Shandong Zhongjie Special Equipment's main products include: fuel (gas) boilers, organic heat carrier boilers, biomass boilers, waste heat boilers, and other boiler products; vacuum insulation cryogenic pressure vessels such as LNG tanks, oxygen/nitrogen/argon tanks, CO2 tanks; pressure vessel products such as denitrification engineering equipment, heat storage and energy storage equipment, complete chemical equipment sets; central air conditioning and HVAC equipment such as ground (water) source heat pumps, air source units, water-cooled screw units, and air-cooled modular units. Planned products include large-scale energy centers, LNG transport vehicles, LNG tank containers, and other green energy equipment.
When applying coatings to CO2 storage tanks, attention should be given to the following issues: Surface Preparation: Prior to coating, thorough preparation of the tank surface is necessary. This involves cleaning the surface, removing grease, dirt, and old coatings to ensure the adhesion and quality of the coating. Paint Selection: Choosing the right paint for CO2 storage tanks is crucial. The paint should be corrosion-resistant, heat-resistant, and chemical-resistant to protect the tank surface from corrosion and damage. Spraying Techniques: The choice and operation of spraying techniques are vital for the quality and evenness of the coating. Appropriate spraying equipment and methods should be selected to ensure the paint covers the entire tank surface evenly and avoids drips and runs. Coating Thickness: The thickness of the coating is crucial for the protective effect of the tank. The 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 required by the paint 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 coating is completed, a quality inspection should be conducted, including the appearance, adhesion, and thickness of the coating. Any issues or defects should be repaired and addressed promptly. It should be noted that coating CO2 storage tanks should be performed by professionals.

Liquid CO2 Filling into Storage Tanks: The process of filling liquid CO2 into storage tanks. Here are some important considerations for CO2 tank filling: 1. Safe Operation: Adhere to the relevant safety operation procedures during CO2 tank filling. Operators should be trained and familiar with the tank's characteristics and safety precautions to ensure safe operations. 2. Tank Capacity Control: Ensure that the filling does not exceed the tank's rated capacity. Exceeding the rated capacity can lead to excessive tank pressure, increasing safety risks. 3. Filling Rate Control: Maintain a moderate filling rate to avoid too fast or too slow. A rapid filling rate can cause excessive internal pressure, while a slow rate can extend filling time. 4. Temperature Control: Control the temperature of the liquid CO2 during filling. High temperatures can cause rapid evaporation, and low temperatures can lead to solidification. 5. Pressure Control: Monitor and control the internal pressure of the tank during filling. Excessive pressure can cause tank rupture or leakage, while low pressure can result in insufficient filling. 6. Level Monitoring: Regularly monitor the tank's level during filling to ensure accurate measurements and avoid overfilling or underfilling. 7. Pressure Relief Devices: The tank should be equipped with pressure relief devices, such as safety valves, to control internal pressure. The set pressure of these devices should meet relevant requirements and be regularly inspected and maintained. 8. Environmental Protection: Pay attention to environmental protection during filling to prevent leaks and contamination of liquid CO2. Use appropriate protective measures, such as sealed connections and protective devices. The above are some important considerations for CO2 tank filling. Follow relevant safety specifications and standards during filling operations and consult experts to ensure safety and effectiveness.

CO2 flooding is a commonly used enhanced oil recovery technique, designed to increase the recovery rate of oil fields. It works by injecting CO2 gas into the reservoir to alter its physical and chemical properties, thereby promoting fluid flow and enhancing recovery. The working principle of CO2 flooding is as follows: - Solubility Principle: CO2 has a high solubility in oil. When CO2 gas is injected into the reservoir, it dissolves within the oil, reducing its viscosity and surface tension, making it easier to flow. - Expansion Displacement Principle: After CO2 gas is injected into the reservoir, it expands to form a gas phase, increasing the internal pressure of the reservoir, which in turn drives the oil towards the wellbore. Additionally, CO2's high permeability can improve the reservoir's permeability, enhancing fluid flow. - Chemical Reaction Principle: CO2 reacts with certain components in the oil, producing soluble substances that further reduce viscosity and improve fluidity. CO2 flooding technology offers certain advantages in oilfield development, such as: - Environmental Friendliness: CO2 is a clean, non-toxic, and renewable gas. Using CO2 for flooding can reduce environmental pollution. - Economic Viability: CO2 flooding can increase the recovery rate of oil fields, boost production, and thus enhance economic benefits. - Sustainability: CO2 can be separated from air or captured and stored from industrial flue gases, enabling the recycling of CO2 and ensuring sustainability. It is important to note that the application of CO2 flooding technology requires consideration of reservoir characteristics, geological conditions, and economic feasibility factors. Before implementing CO2 flooding, thorough reservoir evaluation and engineering design are necessary to ensure the effectiveness and safety of the technology.

In recent years, the surge in the development of low-temperature liquid storage tanks can be attributed to several factors: - Increasing energy demand: As the economy grows and the population expands, the demand for energy continues to rise. Low-temperature liquid storage tanks are primarily used for storing liquid gases (LNG), liquid oxygen (LOX), liquid nitrogen (LIN), and other low-temperature liquid energy sources to meet the growing energy needs. - Greenhouse gas emission reduction: These tanks can store and transport liquid carbon dioxide (CO2), utilized in carbon capture and storage (CCS) technology to reduce greenhouse gas emissions. With heightened awareness of environmental protection and climate change, the demand for low-temperature liquid storage tanks in the CCS field has also increased. - Industrial development needs: The application of low-temperature liquid storage tanks in the industrial sector is also on the rise. For instance, in chemical, pharmaceutical, food and beverage industries, there is a need for storage and transportation of low-temperature liquid raw materials or products, such as liquid nitrogen, liquid oxygen, and liquid ethylene. As these industries develop, so does the demand for low-temperature liquid storage tanks. - Technological advancement and innovation: In recent years, there have been continuous advancements and innovations in the design, manufacturing, and transportation of low-temperature liquid storage tanks. The application of new materials, optimization of tank structures, and improvements in safety control systems have made these tanks safer and more reliable, further propelling their peak development. In summary, factors such as increasing energy demand, greenhouse gas emission reduction, industrial development needs, and technological advancement and innovation have collectively driven the peak development of low-temperature liquid storage tanks in recent years. As related industries and technology continue to evolve,
Our company attaches great importance to technological innovation and R&D design. We possess 1 municipal-level enterprise technology center in Heze City, with testing facilities for non-destructive testing, physical and chemical testing, welding testing, hydrostatic testing, etc. We are equipped with over 600 various instruments and equipment, including CNC machine tools, X-ray flaw detectors, digital ultrasonic flaw detectors, mechanical property testing machines, chemical analyzers, spectrometers, tensile testing machines, plasma welding machines, and more. The key products and technologies we have developed, such as temperature and pressure vessel welding, biomass boiler emission reduction, and waste heat utilization, have successively been shortlisted for multiple Shandong Provincial Department of Industry and Information Technology science and technology innovation projects, Shandong Provincial key projects, and Heze City innovation and excellence projects. We have accumulated a total of 27 authorized utility models, 16 authorized inventions, participated in drafting 2 standards, 2 industry standards, and registered 15 trademarks. The technical team of our company, in collaboration with Professor Yajiang Li of Shandong University, has developed deep cryogenic container processing technology using the international plasma arc + wire filling argon arc welding (PAW-GTAW) technology. After being appraised as a provincial-level scientific and technological achievement, our technology level has reached an international standard in the field of deep cryogenic container manufacturing. Choose Zhongjie Special Equipment, and let's create brilliance together!