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 and GC2/Class pressure pipeline installation licenses, as well as an electromechanical 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 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.
The primary reason for pre-cooling a carbon dioxide tank before use is to ensure that the carbon dioxide inside the tank remains in a liquid state and maintains a stable temperature during storage and supply. The pre-cooling process typically involves the following steps: Tank Cooling: Before the tank is put into operation, the internal temperature of the tank must be cooled to a sufficiently low level to convert the carbon dioxide from a gas to a liquid. This can be achieved by injecting a cooling medium (such as liquid nitrogen) into the tank or by using an external cooling device. Tank Pre-filling: After the tank has been cooled, liquid carbon dioxide must be pre-filled into the tank to fill it and maintain a certain pressure. The purpose of pre-filling is to provide sufficient carbon dioxide supply during storage and supply and to maintain stable pressure within the tank. Through pre-cooling, the liquid state of the carbon dioxide inside the tank is ensured, preventing premature evaporation and energy loss. Additionally, pre-cooling helps to lower the tank's temperature in advance, reducing carbon dioxide evaporation and pressure fluctuations, thereby improving the tank's operational efficiency and safety. It should be noted that the specific methods and requirements for pre-cooling may vary depending on the tank design and application scenarios. When performing pre-cooling operations, it is necessary to follow relevant safety operation procedures and standards to ensure the safety and effectiveness of the operation.

Here are some common protection techniques for carbon dioxide storage tanks: Fire and Explosion Prevention Measures: A fire-resistant isolation zone should be set up around the tank, away from fire sources and flammable materials. The tank itself should adopt fire and explosion prevention measures, such as fire-resistant coatings and explosion-proof devices, to prevent fires and explosions. Leak Detection and Alarm Systems: The tank should be equipped with leak detection and alarm systems to promptly detect and alert of any leakage. Regularly inspect and maintain the leak detection equipment to ensure proper functioning. Regular Inspections and Maintenance: Regularly inspect the tank's exterior, valves, and fittings to ensure they are intact. Conduct regular leak detection and pressure tests to ensure the tank's safety performance meets requirements. Waste Gas Treatment: Treat the waste gases produced by the carbon dioxide storage tank to prevent environmental pollution. Implement appropriate waste gas treatment measures, such as collecting and treating the waste gases. Static Protection: Take static protection measures to avoid static accumulation and discharge. Use anti-static equipment and tools to ensure static safety during operations. Safety Training and Awareness: Train operators on safety procedures to enhance their awareness and ability to handle carbon dioxide storage tanks safely. Conduct regular safety training and drills to respond to emergencies. Management Records and Documentation: Establish comprehensive management records and documentation, including the tank's usage, inspection, and maintenance records. Regularly review and update management records to ensure safe management and maintenance of the tank. It should be noted that the above are common protection techniques, and specific techniques may vary depending on the type and application of the tank. When using carbon dioxide storage tanks, operate according to relevant specifications and standards, 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 flow and enhancing recovery rates. 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 viscosity and surface tension, making it more fluid. - Expulsion Drive Principle: After CO2 gas is injected into the reservoir, it expands to form a gas phase, increasing the internal pressure of the reservoir, which pushes the oil towards the wellbore. Additionally, CO2's high permeability can improve the reservoir's permeability, enhancing fluidity. - 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. Utilizing CO2 flooding can reduce environmental pollution. - Economic Efficiency: CO2 flooding can increase oil recovery rates and production, thereby enhancing economic returns. - Sustainability: CO2 can be separated from air or captured and stored from industrial flue gases, enabling the recycling of CO2 and promoting sustainability. It is important to note that the application of CO2 flooding technology requires consideration of reservoir characteristics, geological conditions, and economic feasibility factors. Prior to implementing CO2 flooding, a comprehensive reservoir evaluation and engineering design are necessary to ensure the effectiveness and safety of the technology.

Carbon dioxide storage tanks possess the following characteristics: - High-pressure Vessel: Carbon dioxide storage tanks are typically designed as high-pressure vessels, capable of withstanding high pressure. This is because carbon dioxide requires high pressure at room temperature to maintain a liquid state. - High Oxidizing Property: Carbon dioxide has a high oxidizing property, which can support combustion. Therefore, when using and storing carbon dioxide, precautions must be taken to prevent contact to avoid the risk of fire and explosion. - Low-Temperature Storage: Carbon dioxide is in a gaseous state at room temperature but can be compressed into a liquid at lower temperatures. Thus, carbon dioxide storage tanks usually need to have good insulation properties to maintain the low-temperature liquid state of the stored carbon dioxide. - High Density: Liquid carbon dioxide has a high density, allowing for the storage of large amounts of carbon dioxide in a relatively small volume. This makes carbon dioxide storage tanks useful in scenarios requiring substantial carbon dioxide supply. - Safety Valves and Pressure Control: To ensure the internal pressure of the tank remains within a safe range, carbon dioxide storage tanks are usually equipped with safety valves and pressure control devices. These devices monitor and control the internal pressure of the tank to prevent excessive pressure from causing the tank to burst. - Corrosiveness: Carbon dioxide has some degree of corrosiveness, especially in high humidity environments. Therefore, the materials and corrosion prevention measures for the tank need to consider the corrosiveness of carbon dioxide to ensure the tank's durability and safety. These characteristics make carbon dioxide storage tanks widely applicable in many industries, such as the food and beverage industry, fire suppression, and the gas industry. When using carbon dioxide storage tanks, it is necessary to follow relevant safety operation procedures and standards to ensure the safety of operations.
ZJ Special Equipment adheres to 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 products and services at competitive prices!