Shandong Zhongjie Special Equipment specializes in: fuel (gas) boilers, organic heat carrier boilers, biomass boilers, waste heat recovery boilers, and other boiler products; vacuum insulated cryogenic pressure vessels such as LNG storage tanks, oxygen-nitrogen-argon storage tanks, and CO2 storage tanks; pressure vessel products including denitrification engineering equipment, heat storage and energy storage equipment, and complete chemical equipment sets; central air conditioning and ventilation 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 thermal energy centers, LNG transport vehicles, and LNG tank containers, among other green energy equipment.
Carbon dioxide storage tanks are categorized into various types and structures based on their design and application, including: - Vertical Tanks: Commonly used carbon dioxide tanks, these are cylindrical in shape and upright. They typically have larger capacities and are used for large-scale storage and supply of carbon dioxide. - Horizontal Tanks: Another common type, these tanks are rectangular or cylindrical and placed horizontally. They are suitable for smaller-scale storage and supply, ideal for limited spaces. - Spherical Tanks: A specialized type with a spherical shape, these tanks offer high strength and pressure containment, ideal for high-pressure carbon dioxide storage and transportation. - Vertical Tanks: Smaller capacity tanks with a cylindrical shape and upright placement. They are generally used for small-scale storage and supply, such as for commercial and residential use. - Underground Tanks: A unique structure where the carbon dioxide tank is buried underground. They save space, reduce visual impact, and offer enhanced safety and environmental protection. These tanks are typically made of pressure-resistant materials (like carbon steel or stainless steel) and have certain thermal insulation properties, along with accessories such as safety valves, pressure gauges, and level indicators. The interior usually features baffles or partitions to separate different liquids or gases. Additionally, the tanks are equipped with safety systems, such as pressure maintenance systems, leak detection systems, and fire detection systems.

The liquid level in a CO2 storage tank will vary based on specific design and operational requirements. Generally, the liquid CO2 tank level is maintained between 80% and 95%. There are several reasons for keeping the tank level within this range: - Space reservation: Maintaining a certain level of liquid provides steam space within the tank to prevent over-pressurization and the risk of tank explosion. - Storage capacity: Keeping a higher level maximizes the tank's capacity, allowing for more CO2 storage. - Stable supply: Maintaining an appropriate level ensures a stable CO2 supply to meet usage demands. However, specific level requirements may vary depending on different applications and industries. When using a CO2 storage tank, follow the manufacturer's recommendations and relevant regulations and standards to ensure the tank's level is controlled within a safe and suitable range.

CO2 Enhanced Oil Recovery (CO2 EOR) is a commonly used production enhancement technique to increase oil recovery rates in oil fields. It works by injecting carbon dioxide gas into the reservoir to alter its physical and chemical properties, thereby promoting flow and enhancing recovery. The working principle of CO2 EOR is as follows: Solubility Principle: Carbon dioxide 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 easier to flow. Expulsion Drive 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 flow. Chemical Reaction Principle: Carbon dioxide undergoes chemical reactions with some components in the oil, producing soluble substances that further reduce viscosity and improve flowability. CO2 EOR technology offers certain advantages in oilfield development, such as: Environmental Friendliness: Carbon dioxide is a clean, non-toxic, and renewable gas. Using CO2 EOR can reduce environmental pollution. Economic Viability: CO2 EOR can increase oil recovery rates and production, thereby improving economic benefits. Sustainability: Carbon dioxide can be separated from flue gas or captured and stored from industrial emissions, enabling its recycling and sustainability. It is important to note that the application of CO2 EOR technology requires consideration of reservoir characteristics, geological conditions, and economic feasibility factors. Adequate reservoir evaluation and engineering design should be conducted before implementing CO2 EOR to ensure the effectiveness and safety of the technology.

When filling liquid carbon dioxide into storage tanks, attention should be given to the following aspects: - Safe Operation: During the filling process, it is mandatory to follow relevant safety operation procedures and standards. Operators should receive training to understand the operation requirements and safety measures of the filling equipment and operate strictly in accordance with the procedures. - Tank Inspection: Before filling, the tank must be inspected to ensure its integrity and safety. Check the tank's appearance, sealing, valves, and pipe connections, and repair or replace them promptly if any abnormalities or damages are found. - Filling Equipment: Select appropriate filling equipment, ensuring it meets relevant standards and requirements. The filling equipment should have a safe and reliable design and operational functionality to ensure the safety and efficiency of the filling process. - Filling Rate Control: Controlling the filling rate is crucial. Excessive filling speed can lead to excessive tank pressure, increasing safety risks. The filling rate should be controlled based on the tank's capacity and design requirements to ensure safe filling. - Pressure Control: The tank's pressure must be strictly controlled during the filling process. The filling equipment should be equipped with pressure sensors and safety valves to ensure the internal pressure of the tank remains within a safe range. - Leak Protection: During the filling process, the sealing of valves and pipes must be ensured to prevent the leakage of carbon dioxide. Regularly inspect and replace seals, and promptly address any leakage situations. - Monitoring and Recording: Real-time monitoring and recording of key parameters such as pressure, temperature, and level should be conducted during the filling process. This helps in the timely detection of anomalies and allows for corresponding adjustments and treatments. - It is important to note that the filling of carbon dioxide storage tanks should be performed by qualified operators who follow relevant safety operation procedures and standards. Seek advice and guidance from knowledgeable individuals.
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