Shandong Zhongjie Special Equipment (formerly Heze Boiler Factory Co., Ltd.) was established in 2001, located at No. 2218 Jinnan Road, 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: boilers, deep-freeze containers, pressure vessels, central air conditioning, engineering installation, international trade, and Internet of Things. It has three factory sites on Jinnan Road, East Yangtze Road, and Bohai Road, covering a total of 200,000 square meters. The main workshop is 83,000 square meters. There are currently 710 employees, including 247 engineering and technical personnel and 82 intermediate-level technicians. 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, Fine, and New Enterprise in Shandong" by the Ministry of Industry and Information Technology. In June 2022, it was recognized as a "Shandong Gazelle Enterprise." In August 2022, it was identified as a "Specialized, Fine, and New Small Giant Enterprise" by the Ministry of Industry and Information Technology.
In accordance with China's "Regulations for Safety Supervision of Pressure Vessel Technologies," carbon dioxide storage tanks are classified as Category II pressure vessels. The Regulations categorize pressure vessels as follows: - Category I pressure vessels: Those with operating pressures of 10 MPa (megapascals) or higher, such as steam boilers and pressure vessels. - Category II pressure vessels: Those with operating pressures between 0.1 MPa and 10 MPa, such as air compressors and liquefied gas storage tanks. - Category III pressure vessels: Those with operating pressures between 0.05 MPa and 0.1 MPa, such as storage tanks. - Category IV pressure vessels: Those with operating pressures below 0.05 MPa, such as gas cylinders. Based on this classification, carbon dioxide storage tanks typically have operating pressures above 0.1 MPa, thus falling under Category II pressure vessels. It should be noted that specific classification criteria may vary due to different regional regulations and standards. When using and managing carbon dioxide storage tanks, it is essential to adhere to the corresponding regulatory and standard requirements.

Carbon dioxide tanks are categorized into various types and structures based on their design and usage: - Vertical Tanks: Commonly used carbon dioxide tanks, these are cylindrical in shape and placed vertically. They typically have larger capacities and are used for large-scale storage and supply. - Horizontal Tanks: Another common type, these tanks are rectangular or cylindrical and placed horizontally. They are suitable for smaller-scale storage and supply in limited spaces. - Spherical Tanks: A specialized type of carbon dioxide tank with a spherical shape. They offer high strength and pressure containment, ideal for high-pressure storage and transport. - Vertical Tanks (Small Capacity): Smaller in capacity, these cylindrical tanks are placed vertically. They are 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 provide safety and environmental protection. These tanks are usually made of pressure-resistant materials (like carbon steel or stainless steel) with certain thermal insulation properties and accessories such as safety valves, pressure gauges, and level indicators. The interior often features baffles or partitions to separate different liquids or gases. Additionally, they are equipped with safety systems like pressure maintenance systems, leak detection systems, and fire detection systems.

Low-Temperature Carbon Dioxide Storage Tank Knowledge 1. Structure of Low-Temperature Carbon Dioxide Storage Tanks Low-temperature carbon dioxide storage tanks typically have a double-walled cylindrical structure. The inner cylinder is made of 6MnDR alloy steel, while the outer cylinder is made of Q245R or Q345R pressure vessel steel plate. The piping is constructed from austenitic stainless steel, and the insulation space is filled with high-vacuum sintered sand or layered with insulating materials. The storage tanks are equipped with valves for operation, which are arranged for ease of use. Pressure gauges and level indicators are also installed for monitoring the tank's internal pressure and liquid level. 2. Key Features of Low-Temperature Carbon Dioxide Storage Tanks (1) The tanks are equipped with liquid filling connections for tanker trucks, allowing supply to vaporizers, tanker trucks, and pumps. (2) Both the inner and outer cylinders of the tank are fitted with safety equipment to ensure safe operation. (3) The insulating material of the tank is specially treated to provide a longer vacuum lifespan. Additionally, the tank is equipped 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 fastened to the vehicle and travel at moderate speeds. Collision with other objects is prohibited. (2) After arrival, the unloading personnel should work together 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 positioned once the installation conditions are met. During the installation process, collisions and impacts should be avoided, and special attention should be given to the outer cylinder's explosion-proof equipment and vacuum valve, which should not be touched. (2) A gas-tightness test is conducted using nitrogen to the working pressure on the inner cylinder system of the tank. After ensuring that valves, pipes, flanges, etc., are free of leaks, the installation is complete. (3) The installation dimensions are as specified in the supply documents. When liquid loading and unloading is required using tanker trucks, the vehicle's access route should be considered.

Carbon dioxide storage tanks are equipment used for storing and transporting carbon dioxide (CO2). They are typically sealed containers with specialized design and structure to ensure safe storage and use of CO2. Here are some common information about carbon dioxide storage tanks: Storage Form: Carbon dioxide is in a gaseous state at room temperature but can be compressed into a liquid under high pressure for easier storage and transportation. Carbon dioxide storage tanks are usually used for storing liquid CO2. Storage Pressure: These tanks typically store high-pressure CO2 at around 20-25 bar, which helps maintain the liquid state. Storage Capacity: The capacity of carbon dioxide storage tanks varies depending on the needs, ranging from small ones with a few thousand liters to large ones with tens of thousands of liters. The capacity choice depends on specific application requirements. Safety: Carbon dioxide is colorless, odorless, and tasteless, but can be dangerous if inhaled at high concentrations. Therefore, appropriate safety measures such as ventilation and protective gear must be taken when using carbon dioxide storage tanks to ensure the safety of operators. Applications: Carbon dioxide storage tanks are widely used in various fields, including the food and beverage industry, construction, fire extinguishing, and gas supply. They store and provide CO2 to meet diverse business needs. It is important to note that the design, manufacturing, and use of carbon dioxide storage tanks must comply with relevant regulations, standards, and safety provisions. When using these tanks, operators should follow the operation manual and safety guidelines, and cooperate with local regulatory authorities to ensure the safety and reliability of the tanks.
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