Shandong Zhongjie Special Equipment (formerly Heze Boiler Factory Co., Ltd.) holds an A-grade boiler manufacturing license, A2-grade pressure vessel manufacturing license, A2-grade pressure vessel design license, B-grade boiler installation license, and GB2/GC2 pressure pipeline installation license, as well as an electromechanical equipment installation contractor qualification. It is a member of the China Boilers and Water Treatment Association, the China Chemical Equipment Association, and a director unit 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.
Carbon dioxide storage tanks can be categorized into various types and structures based on their design and application: - Vertical Tanks: Commonly used carbon dioxide storage tanks, these are cylindrical in shape and vertically placed. Vertical tanks typically have larger capacities and are used for large-scale storage and supply of carbon dioxide. - Horizontal Tanks: Another common type of carbon dioxide storage tank, which can be rectangular or cylindrical in shape and horizontally placed. Horizontal tanks are usually used for smaller-scale storage and supply, suitable for limited spaces. - Spherical Tanks: A specialized type of carbon dioxide storage tank with a spherical shape. These tanks offer high strength and pressure containment capabilities, suitable for high-pressure storage and transportation of carbon dioxide. - Vertical Tanks: Smaller capacity carbon dioxide storage tanks with a cylindrical shape and vertical placement. Vertical tanks are typically used for small-scale storage and supply, such as for commercial and residential use. - Underground Tanks: A unique structure where carbon dioxide storage tanks are buried underground. Underground tanks save space, reduce visual impact, and provide enhanced safety and environmental protection. These tanks are usually constructed from pressure-resistant materials (like carbon steel or stainless steel) with certain thermal insulation properties and equipped with accessories such as safety valves, pressure gauges, and level indicators. The interior often features baffles or partitions to separate different liquids or gases. Additionally, the tanks are fitted with safety systems, including pressure maintenance systems, leak detection systems, and fire detection systems.

Pressure Vessel Standards: Liquid carbon dioxide storage tanks are generally considered pressure vessels, and their design, manufacturing, and use should comply with the relevant pressure vessel standards. In China, common pressure vessel standards include GB150 "Steel Pressure Vessels" and GB18435 "Storage Tanks." Safety Standards: The use of liquid carbon dioxide storage tanks should adhere to relevant safety standards and regulations. For instance, in China, the safe operation of liquid carbon dioxide storage tanks should follow standards such as GB50028 "Design Code for Petroleum and Chemical Enterprises" and GB50016 "Fire Prevention Code for Building Design." Inspection and Testing Standards: The inspection and testing of liquid carbon dioxide storage tanks should comply with the corresponding standards and regulations. For example, regular inspections of liquid carbon dioxide storage tanks can refer to standards like GB/T 19638 "Regulations for Periodic Inspection of Pressure Vessels." Environmental Protection Standards: The use of liquid carbon dioxide storage tanks should comply with relevant environmental protection standards and regulations. For instance, in China, the exhaust emissions from liquid carbon dioxide storage tanks should meet standards such as "Emission Standards of Air Pollutants."

An automated maintenance system for carbon dioxide tanks typically includes the following main components: - Pressure Maintenance System: Monitors and regulates the internal pressure of the tank to ensure the carbon dioxide within remains at a safe and stable pressure range. The system includes pressure sensors, control systems, pressure regulating valves, and pressure reserve devices. - Temperature Control System: Monitors and regulates the internal temperature of the tank to maintain the carbon dioxide at an appropriate temperature range. The system includes temperature sensors, control systems, and temperature regulating devices. - Level Monitoring System: Measures and monitors the liquid level within the tank to ensure the carbon dioxide level remains within a safe range. The system can utilize float level gauges, pressure level gauges, and ultrasonic level gauges. - Leak Detection System: Monitors for leaks in the tank and pipeline systems, enabling timely detection and alarms. The system can employ gas sensors, liquid sensors, and leak detectors. - Fire Detection and Extinguishing System: Monitors for fires in the tank area and takes appropriate extinguishing measures. The system includes fire detectors, alarms, and extinguishing equipment. - Remote Monitoring and Control System: Allows for remote monitoring and control of the tank's operational status and parameters, enabling remote operation and management. The system can connect via network, providing real-time data and remote control functions. The above are the main components of a typical automated maintenance system for carbon dioxide tanks. Specific system configurations and functions can be customized according to the tank's design requirements and application scenarios. These automated maintenance systems enhance the tank's safety, stability, and reliability, reducing the need for manual intervention and operational risks.

In recent years, the surge in the development of low-temperature liquid storage tanks can be attributed to the following 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 liquefied natural gas (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 growing concerns for 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 industries such as chemicals, pharmaceuticals, food and beverages, there is a need to store and transport low-temperature liquid raw materials or products, like 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 develop and technology progresses,
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 solely on the development of green energy equipment, and dedicating products and services with high cost-performance to society!