Shandong Zhongjie Special Equipment Co., Ltd. (formerly Heze Boiler Factory Co., Ltd.) was established in 2001 and is located at No. 2218 Jinan Road, Economic Development Zone, Heze City. With a registered capital of 50 million yuan and total assets of 500 million yuan, the company has 7 business centers: boiler, deep-freezing container, pressure vessel, central air conditioning, engineering installation, international trade, and Internet of Things. It has three manufacturing sites on Jinan Road, East Changjiang Road, and Bohai Road, covering a total area of 200,000 square meters, with the main workshop spanning 83,000 square meters. Currently, it has 710 employees, including 247 engineering and technical staff and 82 intermediate-level technical personnel. In December 2016, it was recognized as a "High-Tech Enterprise" by the Science and Technology Department. In June 2021, it was identified as a "Specialized and New Enterprise in Shandong Province" by the Ministry of Industry and Information Technology. In June 2022, it was recognized as a "Gazelle Enterprise in Shandong Province" and in August 2022, it was identified as a "Specialized and New Small Giant Enterprise" by the Ministry of Industry and Information Technology.
1. Knowledge about Low-Temperature Carbon Dioxide Storage Tanks The low-temperature carbon dioxide storage tank typically features a double-cylinder structure, with the inner cylinder made of 6MnDR alloy steel and the outer cylinder of Q245R or Q345R pressure vessel steel plate. The piping is constructed from austenitic stainless steel, while the insulation space is filled with high-vacuum sintered sand or layered with insulation. The tank is equipped with valves for operation, which are arranged for ease of use. Pressure gauges and level indicators are also installed to monitor the tank's internal pressure and liquid level. 2. Key Features of Low-Temperature Carbon Dioxide Storage Tanks (1) The tank is equipped with a liquid filling connection for trucks, allowing supply to vaporizers, trucks, and pumps. (2) Both the inner and outer cylinders of the tank are equipped with safety devices to ensure safe operation for users. (3) The insulation material in the tank is specially treated to provide a longer vacuum life. Additionally, the tank is fitted with a vacuum gauge for measuring the insulation space's vacuum level when necessary. 3. Transportation of Low-Temperature Carbon Dioxide Storage Tanks (1) During road transportation, the tank should be securely attached to the vehicle and travel at moderate speeds. It is prohibited to collide with other objects. (2) After the tank arrives, the unloading personnel should work with the equipment supervisor to develop a scientific and reasonable unloading plan. 4. Installation of Low-Temperature Carbon Dioxide Storage Tanks (1) Upon arrival at the installation site, the tank can be placed when installation conditions are met. During the installation process, avoid impacts and strikes, and pay special attention to the outer cylinder's explosion-proof equipment and vacuum valve; do not touch them. (2) Conduct an air-tightness test on the inner cylinder system of the tank using nitrogen to the working pressure. After checking that valves, pipes, flanges, etc., show no leaks, the installation is complete. (3) The installation dimensions are as specified in the supply documentation. When considering filling and emptying with tank trucks, account for the vehicle's access pathways.

Carbon dioxide storage tanks possess the following safety technical features: - High-strength materials: These tanks are typically made of high-strength steel or alloy materials to withstand stress and loads under high pressure and low-temperature conditions. - Safety valves and pressure relief devices: Equipped with safety valves and pressure relief devices to control internal tank pressure, preventing overpressure and explosion. The safety valve will automatically open to release pressure when the internal pressure exceeds the set value. - Insulation layer: An internal insulation layer is installed to reduce heat conduction and liquid evaporation. The insulation layer usually consists of multiple layers, including thermal insulation materials and an external protective layer, to maintain stable internal tank temperature. - Level monitoring and control: The tank is fitted with level monitoring equipment to monitor the liquid level inside. Timely monitoring and control of the level ensure the liquid stored within the tank is within a safe range. - Fire and explosion prevention measures: The tank implements fire and explosion prevention measures such as fire-resistant coatings, fire-resistant isolation areas, and explosion-proof devices to prevent fires and explosions. - Leak detection and alarm system: The tank is equipped with a leak detection and alarm system to promptly detect and alert of any leakage. Rapid response and handling can minimize the safety risks caused by leaks. - Regular inspections and maintenance: Tanks require regular inspections and maintenance, including visual inspections, valve maintenance, and pressure testing, to ensure safety performance and reliability. Note that the specific safety technical features of carbon dioxide storage tanks may vary depending on the type of tank and its application. When using carbon dioxide storage tanks, it is essential to comply with relevant regulations.

Carbon dioxide storage tanks come in various sizes and configurations, tailored to specific application and capacity requirements. Here are some common dimensions and structures: Dimensions: The size of carbon dioxide storage tanks can range from small to large, varying with capacity. Common sizes include thousands to tens of thousands of liters. Structure: Typically, these tanks feature a double-walled design, with the inner wall for storing liquid carbon dioxide and the outer wall for insulation. The inner wall is usually made of stainless steel or aluminum alloy, offering excellent corrosion resistance. Insulation: To maintain the low temperature of the liquid carbon dioxide, the outer wall is insulated to reduce heat transfer and maintain低温. Insulation can be in multi-layered structures, such as polyester foam or glass wool. Pressure Relief Devices: Carbon dioxide storage tanks are often equipped with pressure relief devices, like safety valves, to control internal pressure. The set pressure of these devices should meet relevant requirements and be regularly inspected and maintained. Connection Pipes: The connection between the tank and the pipes is usually made using appropriate methods, such as flange or threaded connections. These pipes should comply with relevant standards and regulations to ensure a secure and leak-proof connection. Support Structure: Large carbon dioxide storage tanks typically require a support structure to bear their weight. This structure can be made of steel or concrete, ensuring stability and safety. It's important to note that the specific dimensions and structures of carbon dioxide storage tanks may vary depending on different applications and requirements. When selecting and using carbon dioxide storage tanks, considerations should be based on the specific needs.

Carbon dioxide tank hydrostatic testing is a common quality inspection method used to verify the tank's sealing and pressure resistance. Below are the general steps for conducting a hydrostatic test on a carbon dioxide tank: Preparation: Ensure the tank is clean inside and empty. Check the tank's valves, pipes, and connections to ensure they are well-sealed. Filling with Water: Fill the tank with water, using tap water or another clean source. Ensure even water filling to avoid bubbles or dead spots. Applying Pressure: Use a pressure pump or other pressure device to gradually increase the water pressure until reaching the predetermined test pressure. The test pressure is typically determined based on the tank's design requirements and relevant standards. Maintaining Pressure: After reaching the test pressure, hold it for a period, usually 15-30 minutes. During this time, observe for any leakage and check for leaks at the valves and connection points. Pressure Release: Release the water pressure inside the tank, ensuring a slow and even release to avoid sudden pressure drops causing shocks. Inspection and Evaluation: After pressure release, inspect the tank's exterior and interior for any leakage. Evaluate the test results to ensure the tank's sealing and pressure resistance meet requirements. Note that when conducting hydrostatic testing, follow relevant safety operation procedures and standards to ensure safety and reliability during the process. Depending on the tank's design and usage requirements, other types of tests can be conducted, such as air pressure testing and ultrasonic inspection, to comprehensively assess the tank's quality and performance. Seek advice and guidance from a consultant.
Zhongjie Special Equipment upholds the great vision of "realizing employees' dreams, creating value for customers, and striving for the prosperity and strength of our motherland," focusing on the development of green energy equipment. We dedicate high-quality, cost-effective products and services to society!