Shandong Zhongjie Special Equipment's main products include: fuel (gas) boilers, organic heat carrier boilers, biomass boilers, waste heat 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 modular units. Planned products include large-scale energy centers, LNG transport vehicles, LNG tank containers, and other green energy equipment.
Carbon dioxide cylinder hydrostatic testing is a common quality inspection method used to verify the cylinder's sealing and pressure resistance. Below are the general steps for conducting a hydrostatic test on a carbon dioxide cylinder: Preparation: Ensure the cylinder interior is clean and empty. Check the cylinder's valves, pipes, and joints to ensure proper sealing. Filling with Water: Fill the cylinder with water using tap water or other clean sources. Ensure even water filling to avoid bubbles or dead ends. Applying Pressure: Use a pressure pump or other pressure device to gradually increase the water pressure until reaching the predetermined test pressure. The test pressure is typically determined based on the cylinder's design requirements and relevant standards. Pressure Holding: After reaching the test pressure, hold it for a period, usually 15-30 minutes. During this time, observe for any leakage from the cylinder, and check for leakage at the valves and joints. Pressure Release: Release the cylinder's water pressure, ensuring a slow and even release to avoid sudden pressure release causing shock. Inspection and Evaluation: After pressure release, inspect the cylinder's exterior and interior for any leakage. Evaluate the test results to ensure the cylinder's sealing and pressure resistance meet requirements. It is important to note that when conducting hydrostatic testing, follow relevant safety operating procedures and standards to ensure safety and reliability during the process. Additionally, based on the cylinder's design and usage requirements, other types of tests can be conducted, such as pneumatic testing, ultrasonic testing, etc., to comprehensively assess the cylinder's quality and performance. Seek advice and guidance from consulting experts.

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 through a cooling agent or 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 internal pressure of 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 specific design and manufacturing. When using carbon dioxide storage tanks, it is essential to follow the operation manual and safety guidelines, and cooperate with local regulatory authorities and personnel to ensure the safety and reliability of the tank.

Routine inspections and maintenance of CO2 storage tanks can be conducted following these steps: - Visual Inspection: Check for any visible damage, corrosion, or oil leakage on the tank's exterior. Pay attention to any abnormalities in the tank shell, valves, and pipe connections. - Internal Inspection: If access to the interior is permitted, conduct an internal inspection. Look for corrosion, scaling, or blockages in the lining, valves, and pipes. - Valve and Pipe Inspection: Verify that the tank's inlet and outlet valves and pipe connections are functioning properly, with no leaks or loose fittings. Ensure valves operate smoothly and reliably. - Pressure Relief Device Inspection: Check that the tank's pressure relief devices (such as safety valves) are operating correctly. Confirm that the set pressure of the relief devices meets requirements. - Measurement and Control System Inspection: Ensure the tank's level, pressure, and temperature measurement and control systems are functioning properly. Calibrate and test the accuracy of measuring equipment. - Cleaning and Drainage: Regularly clean the interior of the tank, removing accumulated impurities and sediments. Also, perform regular drainage to remove liquid and gas impurities from the tank. - Maintenance and Repair: Perform necessary maintenance and repair work based on inspection results. Repair damaged components, replace worn-out seals, etc., to ensure the tank operates normally. - Documentation and Reporting: Document the inspection and maintenance process, including the inspection date, contents, identified issues, and measures taken. Submit inspection reports to relevant departments or management as needed. These are general steps for the routine inspection and maintenance of CO2 storage tanks. Specific operations should be tailored to the tank's characteristics and requirements. When conducting inspections and maintenance, follow relevant safety operating procedures and have personnel perform the operations.

Carbon dioxide tanks are widely used across numerous industries. Here are some common sectors with examples of carbon dioxide tank usage: - Beverage and Food Industry: Carbon dioxide is used as a carbonating agent for beverages and foods, such as sodas, beers, and soft drinks. Tanks are employed for storing and supplying CO2 to meet production line demands. - Industry: Carbon dioxide finds various applications in industry, including anesthesia, respiratory support, and tissue freezing. Tanks are used for storing and supplying medical-grade CO2 to meet facility needs. - Fire Extinguishing: CO2 is extensively used in fire suppression systems, particularly for electrical and sensitive equipment. Tanks are used for storing and supplying CO2 for fire extinguishing purposes. - Gas Industry: Carbon dioxide is also a key product in the gas industry, used in chemical manufacturing, metal processing, welding, and gas shielding. Tanks are used for storing and supplying industrial CO2. - Greenhouse Agriculture: CO2 can be used to enhance plant growth in greenhouses, providing additional CO2 concentration. Tanks are used to supply the required CO2 for greenhouse operations. - Automotive Industry: Carbon dioxide is used for tire inflation and airbag systems in cars. Tanks are used for storing and supplying CO2 to meet automotive manufacturing and repair needs. These are just a few examples of common industries; in reality, carbon dioxide tanks have wide applications in many other sectors, such as chemicals and frozen food industries. Specific applications will vary based on industry requirements and use cases.
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