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, CO2 tanks; pressure vessel products like denitrification engineering equipment, heat storage and energy storage equipment, complete chemical equipment sets; 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.
Common defects in pressure vessels during use may include corrosion. Here are some reasons that could lead to corrosion in pressure vessels: Chemical media: Certain chemical media are corrosive, such as acids, bases, salts, etc. When these media come into contact with the vessel material, corrosion may occur. Humidity and moisture: High humidity environments or long-term exposure to moisture can lead to corrosion on the vessel surface. Especially in the presence of oxygen, the rate of corrosion may increase. Rust: When the protective layer on the vessel surface (such as coatings or plating) is damaged or destroyed, rust may occur. Rust can damage the vessel's surface and may lead to further corrosion. Electrochemical corrosion: When different metals or metal and non-metallic materials come into contact, an electrochemical corrosion battery may form. This type of corrosion can lead to localized corrosion on the vessel surface. Welding defects: Defects such as weld porosity and cracks may be introduced during the welding process. These defects may become starting points for corrosion. Corrosion weakens the structural strength of the vessel, increasing the risk of leakage or rupture. Therefore, it is important to regularly inspect and maintain the corrosion protection, coatings, or plating of pressure vessels. If corrosion issues are found, immediate action should be taken to repair or replace the damaged parts. Additionally, selecting appropriate materials and corrosion prevention measures, as well as correct operation and maintenance methods, can reduce the risk of corrosion in pressure vessels. Adhering to relevant safety operating procedures and standards ensures the safe operation of pressure vessels.

Prior to using a CO2 storage tank, the following preparations must be made: Safety Inspection: Conduct a thorough safety check of the tank before use to ensure there are no visible damages, corrosion, or leaks. Inspect the tank's exterior, valves, and connecting pipes to confirm they are intact and undamaged. Tank Cleaning: Ensure the tank is clean both internally and externally. Remove any debris, dirt, and residues to ensure no substances could affect the quality or safety of the CO2. Pipe Connections: Check the connections between the tank and related pipes to ensure they are securely fastened and sealed. Verify the valve and pipe operating states to ensure they are in the correct position. Pressure Check: Inspect the tank's pressure to ensure it is within the safe range. Use a pressure gauge or other pressure detection equipment if necessary. Ventilation and Safety Measures: Ensure adequate ventilation around the tank to prevent CO2 accumulation. Follow relevant safety operating procedures and measures during use, such as wearing personal protective equipment and avoiding open flames. Tank Labeling: Label the tank with relevant information such as the type of stored gas, pressure rating, and capacity. This assists operators in correctly identifying and handling the tank. Note that these preparations may vary depending on the specific tank type and usage scenario. Before using a CO2 storage tank, it is recommended to refer to the relevant safety operation manuals and guidelines to ensure safe and correct operation.

The process of filling a carbon dioxide tank involves injecting liquid carbon dioxide into the tank. Here are some precautions to consider when filling a carbon dioxide tank: Safety Operation: Adhere to relevant safety procedures during carbon dioxide tank filling. Operators should be trained and aware of the tank's characteristics and safety concerns to ensure safe operations. Tank Capacity Control: Ensure that the filling process does not exceed the tank's rated capacity. Overfilling may lead to excessive pressure and increased safety risks. Filling Rate Control: Maintain a moderate filling rate to avoid too fast or too slow. A rapid filling rate can cause excessive internal pressure, while a slow rate may lead to extended filling times. Temperature Control: Control the temperature of the liquid carbon dioxide during filling. High temperatures can cause rapid evaporation, and low temperatures may lead to solidification. Pressure Control: Monitor and control the internal pressure of the tank during filling. Excessive pressure can cause tank rupture or leakage, while low pressure may result in inadequate filling. Level Monitoring: Regularly check the liquid level in the tank during filling to ensure accurate measurements and prevent overfilling or underfilling. Pressure Relief Devices: Equip the tank with pressure relief devices, such as safety valves, to control internal pressure. The set pressure of these devices should meet relevant requirements and be inspected and maintained regularly. Environmental Protection: Be mindful of environmental protection during filling to prevent leaks and contamination of liquid carbon dioxide. Use appropriate protective measures, such as sealed connections and protective devices. The above are some precautions for carbon dioxide tank filling. Follow relevant safety regulations and standards during filling operations, and consult with experts to ensure safety and effectiveness.

In the event of a CO2 cylinder leak, immediate action should be taken as follows: Ensure personnel safety: First, evacuate the area of the leak quickly and keep a safe distance from any potential hazards. Use appropriate personal protective equipment, such as respirators and protective suits, if necessary. Cut off the gas supply: As soon as possible, shut off the supply of CO2 to stop further leakage. Close the relevant valves or switches, or disconnect the cylinder. Prevent ignition sources: Ensure there are no open flames or other heat sources that could cause a fire in the leak area. If there's a fire risk, take appropriate fire-fighting measures immediately. Ventilation: Activate ventilation equipment to increase air flow, which helps dilute and expel the leaked CO2 gas. Ensure the ventilation system is functioning properly and is not introducing CO2 to other areas. Seal the leak point: If possible, attempt to seal the leak with suitable materials or methods to reduce or stop the leakage. This may require assistance from personnel. Notify relevant departments: Report the leak to the relevant emergency, environmental protection departments, or agencies promptly and follow their instructions. Please note that handling CO2 cylinder leaks is a dangerous task and should only be performed by trained and experienced personnel. Always adhere to the relevant safety operating procedures and guidelines during the process.
Our company attaches great importance to technological innovation and research and development. We have 1 municipal enterprise technology center in Heze City, equipped with non-destructive testing, physical and chemical testing, welding testing, hydrostatic testing, and other testing facilities. We have over 600 various instruments and equipment, including CNC machine tools, X-ray flaw detectors, digital ultrasonic flaw detectors, mechanical property test machines, chemical analyzers, spectrometers, tensile testing machines, plasma welding machines, and more. The key products and technologies we have developed, such as temperature and pressure vessel welding, biomass boiler emission reduction, and waste heat recovery, have successively been selected for several Shandong Province Ministry of Industry and Information Technology scientific and technological innovation projects, Shandong Province key projects, and Heze City innovation and excellence 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. Our technical team, in collaboration with Professor Li Yajiang of Shandong University, has developed deep cryogenic container processing technology using the internationally recognized plasma arc+filling wire argon arc welding (PAW-GTAW) technology. After provincial-level scientific and technological achievement appraisal, the technology level has reached international standards in the field of deep cryogenic container manufacturing. Choose Zhongjietech, let's create brilliance together!