Shandong Zhongjie Special Equipment's main products include: fuel (gas) boilers, organic heat carrier boilers, biomass boilers, waste heat recovery boilers, and other boiler products; vacuum insulation cryogenic pressure vessels such as LNG tanks, oxygen/nitrogen/argon tanks, and CO2 tanks; pressure vessel products such as denitrification engineering equipment, heat storage and energy storage equipment, and complete chemical equipment; central air conditioning and HVAC equipment such as ground (water) source heat pumps, air source units, water-cooled screw units, and air-cooled modules. Planned products include large-scale energy centers, LNG transport vehicles, LNG tank containers, and other green energy equipment.
Carbon dioxide tanks are devices used for storing carbon dioxide gas. They are typically made of high-strength materials with sealing capabilities to prevent the leakage of stored CO2. The design and capacity of the tanks can be adjusted as needed to accommodate various applications. Carbon dioxide tanks are widely used across various fields, including industrial production, food processing, and more. In the industrial sector, they are commonly used for storing and supplying CO2 gas for processes such as welding, gas shielding, and fire suppression. In the food processing industry, they can be used to produce carbonated beverages and frozen foods. In the medical field, carbon dioxide tanks can be used to manufacture medical gases like breathing gases and anesthetic gases. The development and manufacturing of carbon dioxide tanks involve multiple manufacturers and technologies. Different companies may employ various design and manufacturing processes to meet the diverse needs of users. Additionally, relevant safety standards and regulations must be adhered to ensure the safe operation and use of the tanks.

Carbon dioxide has wide applications in the field of food freezing. Below are some common uses of carbon dioxide in food freezing:  Freezing Food Processing: Carbon dioxide is often used in the processing of frozen food. By exposing the food to liquid carbon dioxide, temperatures can be rapidly reduced for quick freezing. This rapid freezing effectively preserves the quality, texture, and nutritional content of the food. Freezing Storage: Carbon dioxide is also utilized for freezing food storage. During the storage process, placing the food in a low-temperature environment and using the freezing effect of carbon dioxide lowers the food's temperature below the freezing point, thereby extending its shelf life. Freezing Transportation: Carbon dioxide plays a crucial role in frozen food transportation. By employing carbon dioxide freezing technology during transport, the low-temperature state of the food can be maintained, preventing quality loss. Freezing Display: In the food retail industry, carbon dioxide is also used in frozen display cabinets. By injecting carbon dioxide gas into the cabinets, the low-temperature state of the food can be preserved, ensuring its freshness and quality while on display. Compared to traditional freezing techniques, carbon dioxide freezing offers advantages such as faster freezing, better freezing results, and less impact on food quality. However, safety operations must be observed when using carbon dioxide freezing technology to avoid leaks and potential harm to humans. Therefore, when using carbon dioxide for food freezing, it is necessary to follow relevant safety operation procedures and guidelines.

The main reasons for not allowing long-term emptying of carbon dioxide tanks are as follows: 1. Safety Risks: Carbon dioxide is a high-pressure gas that remains in a liquid state only when maintained at a certain pressure inside the tank. Long-term release of carbon dioxide from the tank to the atmosphere can cause a drop in tank pressure, potentially leading to structural failure or explosions. 2. Resource Wastage: Carbon dioxide is a valuable resource with widespread applications in industry and other sectors. Long-term emptying of carbon dioxide tanks results in resource waste, which is not in line with sustainable development principles. 3. Environmental Impact: Carbon dioxide is a greenhouse gas. Long-term emptying increases atmospheric carbon dioxide concentration, exacerbating climate change and environmental issues. Therefore, to ensure safety, resource conservation, and environmental protection, carbon dioxide tanks should be used and managed according to specified procedures and requirements, avoiding long-term emptying. When carbon dioxide in the tank is no longer needed, appropriate disposal methods should be adopted, such as recycling, reuse, or safe discharge.

The working principle of carbon dioxide storage tanks involves the compression and liquefaction of carbon dioxide. Here is a brief description of the working principle of carbon dioxide storage tanks: Compression: Carbon dioxide gas is first compressed to a higher pressure by a compressor. This process compresses the gas into a high-pressure state, enabling it to be converted into a liquid. Cooling: The compressed carbon dioxide gas enters a cooler, where it is rapidly cooled by the coolant or cooling system within the cooler. This process cools the gas below its boiling point, converting it into a liquid. Storage: The cooled carbon dioxide liquid is stored in sealed tanks, which are typically insulated to reduce the evaporation of liquid carbon dioxide and maintain a low temperature. The pressure inside the tank is maintained within a certain range to ensure stable storage of the liquid carbon dioxide. Supply: When carbon dioxide is needed, it can be extracted from the tank through valves and piping systems. By controlling the opening and flow of the valves, liquid carbon dioxide can be supplied to the required equipment or system. It should be noted that the working principle of carbon dioxide storage tanks may vary depending on the specific design and manufacturing. When using carbon dioxide storage tanks, follow the operation manual and safety guidelines, and cooperate with local regulatory agencies and personnel to ensure the safety and reliability of the tank.
Our company places great emphasis on technological innovation and research and development. We have one municipal-level enterprise technology center in Heze City, equipped with testing facilities for non-destructive testing, physical and chemical testing, welding testing, hydrostatic testing, and more. We have over 600 pieces of equipment, including CNC machine tools, X-ray flaw detectors, digital ultrasonic flaw detectors, mechanical property testing machines, chemical analyzers, spectrometers, tensile testing machines, plasma welding machines, and others. The key products and technologies we have developed, such as welding of temperature and pressure vessels, biomass boiler emissions reduction, and waste heat utilization, have successively been selected for multiple Shandong Provincial Department of Industry and Information Technology science and technology innovation projects, Shandong Provincial key projects, and Heze City innovative and excellent projects. We have accumulated a total of 27 authorized utility models, 16 authorized inventions, participated in drafting 2 standards, 2 industry standards, and registered 15 trademarks. The technical team of our company, in collaboration with Professor Yajiang Li from Shandong University, has developed deep cryogenic container processing technology using the internationally recognized plasma arc + wire filling tungsten inert gas arc welding (PAW-GTAW) technology. After being appraised as a provincial-level scientific and technological achievement, our technology level has reached an international standard in the field of deep cryogenic container manufacturing. Choose Zhongjie Special Equipment, and let's create brilliance together!