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 operates three factory sites on Jinnan 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. It currently employs 710 staff, including 247 engineers and technicians, 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 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.
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 CO2 inside remains within a safe and stable pressure range. This system comprises pressure sensors, control systems, pressure regulators, and pressure reserve devices. - Temperature Control System: Monitors and adjusts the internal temperature of the tank to keep the CO2 within an appropriate temperature range. The system includes temperature sensors, control systems, and temperature regulators. - Level Monitoring System: Measures and monitors the liquid level inside the tank to ensure the CO2 level remains 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: Allows for remote monitoring and control of the tank's operational status and parameters, enabling remote operation and management. The system connects 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. 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.

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 details about carbon dioxide storage tanks: Storage Form: Carbon dioxide is a gas at room temperature but can be compressed into a liquid under high pressure for easier storage and transport. Carbon dioxide storage tanks are commonly used for storing liquid CO2. Storage Pressure: These tanks usually store high-pressure CO2, with pressure typically around 20-25 bar. This high-pressure state helps maintain CO2 in its liquid form. Storage Capacity: The capacity of carbon dioxide storage tanks can vary, from small ones with a few thousand liters to large ones with tens of thousands. The capacity choice depends on specific application requirements. Safety: Carbon dioxide is colorless, odorless, and non-toxic, but it can be dangerous if inhaled at high concentrations. Therefore, appropriate safety measures, such as ventilation and protective gear, are necessary 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, agriculture, fire suppression, and gas supply. They are used for storing and providing CO2 to meet various industrial 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 the tanks, follow the operating manual and safety guidelines, and cooperate with local regulatory authorities to ensure the safety and reliability of the tanks.

Carbon dioxide has extensive applications in the field of food freezing. Here are some common uses of carbon dioxide in food freezing: 1. Frozen Food Processing: Carbon dioxide is often used in the processing of frozen foods. By exposing the food to liquid carbon dioxide, the temperature can be rapidly reduced, achieving quick freezing. This quick freezing effectively preserves the quality, texture, and nutritional value of the food. 2. Frozen Storage: Carbon dioxide is also used for the frozen storage of food. During the storage process, the food is placed in a low-temperature environment, and through the freezing effect of carbon dioxide, the temperature of the food is lowered below the freezing point, thereby extending the shelf life of the food. 3. Frozen Transportation: Carbon dioxide plays a crucial role in the frozen transportation of food. By using carbon dioxide freezing technology during transportation, the low-temperature state of the food can be maintained, preventing quality and nutritional loss. 4. Frozen Display: In the retail food industry, carbon dioxide is also used in frozen display cabinets. By injecting carbon dioxide gas into the display cabinet, the low-temperature state of the food can be maintained, showcasing the food while keeping it fresh and of high quality. Compared to traditional freezing techniques, carbon dioxide freezing offers some advantages, such as faster freezing speed, better freezing quality, and minimal impact on food quality. However, it is important to note that safety operations must be observed when using carbon dioxide freezing technology to avoid leaks and harm to humans. Therefore, when using carbon dioxide for food freezing, it is necessary to follow relevant safety operation procedures and guidelines.

Carbon dioxide storage tanks can be categorized into various types and structures based on their design and applications: - Vertical Tanks: Vertical tanks are a common type of carbon dioxide storage tank, with a cylindrical shape and upright positioning. They typically have larger capacities and are used for large-scale storage and supply of carbon dioxide. - Horizontal Tanks: Horizontal tanks are another common type, with rectangular or cylindrical shapes and horizontal positioning. They are usually used for smaller-scale storage and supply, suitable for limited spaces. - Spherical Tanks: Spherical tanks are a specialized type of carbon dioxide storage tank with a spherical shape. They offer high strength and pressure containment capabilities, suitable for high-pressure carbon dioxide storage and transportation. - Vertical Tanks (Smaller Capacity): Vertical tanks with a smaller capacity, featuring a cylindrical shape and upright positioning, are used for small-scale storage and supply, such as commercial and residential applications. - Underground Tanks: Underground tanks are a special structure where carbon dioxide storage tanks are buried. They save space, minimize visual impact, and provide enhanced 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 includes baffles or partitions to separate different liquids or gases. Additionally, the tanks are equipped with safety systems such as pressure maintenance systems, leak detection systems, and fire detection systems.
Changjie Special Equipment adheres to the great vision of "realizing employees' dreams, creating customer value, and striving for the prosperity and strength of our motherland," devoting itself to the development of the green energy equipment industry with high cost-performance products and services, and contributing to society!