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, B-grade boiler installation license, and GB2/Class, GC2/Class pressure pipeline installation licenses, as well as equipment and machinery installation contracting qualifications. It is a member of the China Boiler and Water Treatment Association, the China Chemical Equipment Association, and the 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.
The liquid level of carbon dioxide tanks varies based on specific design and operational requirements. Generally, the liquid level in a liquid carbon dioxide tank is maintained between 80% and 95%. There are several reasons to keep the tank level within this range: - Space Reserve: Maintaining a certain level of liquid space provides internal vapor space in the tank, preventing over-pressurization and the risk of tank explosion. - Storage Capacity: Keeping a higher liquid level maximizes the tank's capacity, allowing for more carbon dioxide storage. - Stable Supply: Maintaining an appropriate level ensures a stable supply of carbon dioxide to meet usage needs. However, specific level requirements may vary depending on different applications and industries. When using carbon dioxide tanks, it is important to follow the manufacturer's recommendations and adhere to relevant regulations and standards to ensure the tank's level is controlled within a safe and appropriate range.

There are several types of carbon dioxide storage tanks: - Atmospheric Pressure Tanks: These are containers designed for storing carbon dioxide at pressures close to atmospheric pressure. They are suitable for low-pressure applications such as the beverage industry and gas fire suppression systems. - High Pressure Tanks: These tanks store carbon dioxide at pressures above atmospheric pressure and are commonly used in industrial sectors like chemical processing and refrigeration. - Liquid Storage Tanks: These tanks液化store liquid carbon dioxide at temperatures below room temperature. They are typically used for large-scale liquid carbon dioxide storage needs, such as food freezing and pharmaceutical manufacturing. - Vapor Storage Tanks: These tanks store gaseous carbon dioxide and are designed for conditions suitable for vaporization. They are often used where liquid carbon dioxide needs to be vaporized for supply, such as carbonation in beverages and welding. - Insulated Tanks: These tanks have excellent thermal insulation properties and are used to minimize heat transfer and liquid evaporation. They are usually employed for long-term storage of liquid carbon dioxide, such as in scientific research and refrigeration. It is essential to select the appropriate type of carbon dioxide storage tank based on specific application needs and scenarios, and to operate and manage them in accordance with relevant regulations and standards.

Dry ice is a solidified refrigerant obtained by directly converting carbon dioxide gas under high pressure. It has several applications:  1. Frozen Food and Pharmaceuticals: Dry ice is widely used for the transportation and storage of frozen food and pharmaceuticals. Its low temperature and rapid cooling speed effectively maintain the freshness and quality of food and medicines.  2. Special Effects and Stage Performances: Dry ice is also extensively used in special effects and stage performances. When it comes into contact with environmental heat, it rapidly transforms into gas, producing a large amount of white smoke effect, creating a mysterious and dramatic atmosphere.  3. Cleaning and Disinfection: Dry ice can also be used for cleaning and disinfection. When it comes into contact with surfaces, the low temperature and physical impact of the vaporization process can effectively remove dirt, bacteria, and viruses without leaving residues.  4. Laboratories and Scientific Research: Dry ice has applications in laboratories and scientific research as well. It can be used to freeze samples, prepare low-temperature experimental environments, and create cold traps and condensers.  It is important to note that safety should be a priority when using dry ice, avoiding direct contact with skin and eyes, and not using it in enclosed spaces to prevent carbon dioxide accumulation and oxygen deficiency.

An automated maintenance system for carbon dioxide tanks typically includes the following main components: - Pressure Maintenance System: Monitors and adjusts the internal pressure of the tank to ensure the carbon dioxide inside remains within a safe and stable pressure range. This system includes pressure sensors, control systems, pressure regulating valves, and pressure reserve devices. - Temperature Control System: Monitors and adjusts 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 inside the tank to ensure the carbon dioxide level is within a safe range. This system can utilize float level gauges, pressure level gauges, and ultrasonic level gauges. - Leak Detection System: Monitors leaks in the tank and pipeline systems, detecting and alerting to them promptly. The system can employ gas sensors, liquid sensors, and leak alarms. - Fire Detection and Extinguishing System: Monitors fire conditions in the tank area and takes appropriate extinguishing measures. The system includes fire detectors, alarms, and extinguishing equipment. - Remote Monitoring and Control System: Monitors and controls the operational status and parameters of the tank remotely, enabling remote operation and management. The system can connect via network, providing real-time data and remote control capabilities. These are the main components of a typical automated maintenance system for carbon dioxide tanks. The specific system configuration 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.
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