Shandong Zhongjie Special Equipment (formerly Heze Boiler Factory Co., Ltd.) holds an A-grade boiler manufacturing license, A2-grade pressure vessel manufacturing license, A2-grade pressure vessel design license, B-grade boiler installation, and GB2/Class, GC2/Class pressure pipeline installation licenses, as well as an electromechanical installation contractor qualification. It is a member of the China Boiler and Water Treatment Association, the China Chemical Equipment Association, and the council member of the Shandong Equipment Manufacturing Association, and has passed the ISO9001 Quality Management System, ISO14001 Environmental Management System, OHSAS18001 Occupational Health and Safety Management System certifications, and the ASME/U2 certification.
The primary reason for pre-cooling a carbon dioxide tank before use is to ensure that the carbon dioxide inside the tank remains in a liquid state and maintains a stable temperature during storage and supply. The pre-cooling process typically involves the following steps: Tank Cooling: Before the tank is put into operation, the internal temperature of the tank must be cooled to a sufficiently low level to convert the carbon dioxide from a gas to a liquid. This can be achieved by injecting a cooling medium (such as liquid nitrogen) into the tank or by using an external cooling device. Tank Pre-filling: After the tank has been cooled, liquid carbon dioxide must be pre-filled into the tank to fill it and maintain a certain pressure. The purpose of pre-filling is to provide sufficient carbon dioxide supply during storage and supply and to maintain stable pressure within the tank. Through pre-cooling, the liquid state of the carbon dioxide inside the tank can be ensured, preventing premature evaporation and energy loss. Additionally, pre-cooling helps to lower the tank's temperature in advance, reducing carbon dioxide evaporation and pressure fluctuations, thereby improving the tank's operational efficiency and safety. It should be noted that the specific methods and requirements for pre-cooling may vary depending on the tank design and application scenario. When performing pre-cooling operations, relevant safety operation procedures and standards should be followed to ensure the safety and effectiveness of the operation.

在二氧化碳储罐罐区进行安全操作时，需要遵循以下几个关键步骤和注意事项： 储罐区域划定：将储罐区域划定为专门的区域，并设置明确的标识和警示标志，以提醒人员注意安全。 人员培训：确保所有操作人员都接受过相关的培训，了解储罐的特性、操作规程和应急措施。培训内容应包括储罐的安全操作、泄漏处理、火灾应对等。 个人防护装备：所有进入储罐区域的人员都应佩戴适当的个人防护装备，如防护服、安全鞋、、手套等。这些装备可以提供保护，减少潜在的伤害风险。 操作规程：制定和遵守储罐的操作规程，包括储罐的开启、关闭、充装、排空等操作步骤。确保操作人员按照规程进行操作，避免操作失误和事故发生。 泄漏处理：储罐区域应配备适当的泄漏处理设备和材料，以应对可能的泄漏情况。操作人员应熟悉泄漏处理程序，并及时采取措施进行泄漏控制和清理。 火灾安全：储罐区域应配备适当的消防设备和灭火器材，并确保操作人员了解火灾应对程序。禁止在储罐区域内吸烟或使用明火，以防止火灾风险。 定期检查和维护：定期检查储罐的安全阀、压力表、温度传感器等设备的工作状态，并进行必要的维护和修理。确保储罐的正常运行和安全性。 应急预案：制定储罐区域的应急预案，包括事故报警、人员疏散、急救措施等。所有操作人员应熟悉应急预案，并定期进行演练和培训。 需要注意的是，以上是一般的安全操作指导，具体的操作要求可能会因不同的储罐设计和使用场景而有所差异。在进行储罐操作时，应遵循相关的安全操作规程和标准，确保操作的安全性和有效性。好咨询工程师或储罐制造商以获取具体的操作指导。

To extend the service life of carbon dioxide storage tanks, the following measures can be taken: - Regular Inspections and Maintenance: Conduct regular checks on the tank's exterior, lining, valves, and pipe connections to ensure they are intact. Promptly repair or replace any abnormalities or damages found. - Corrosion Prevention: As carbon dioxide is corrosive, both the internal and external surfaces of the tank should be treated with corrosion-resistant materials. Regularly inspect and maintain the integrity and effectiveness of the protective layer or coating. - Cleaning and Drainage: Regularly clean the interior of the tank to remove accumulated impurities and sediments. Also, periodically drain the liquid and gas impurities from within the tank to maintain cleanliness and proper operation. - Temperature and Pressure Control: Maintain the tank's temperature and pressure within the design limits, avoiding extremes that could damage the tank. - Regular Testing and Calibration: Conduct regular testing and calibration of the tank, including parameters such as level, pressure, and temperature, to ensure accurate and reliable measurement and control systems. - Adherence to Operating Procedures: Strictly follow operating and safety procedures to ensure the tank operates normally and safely. Train operators to enhance their operational skills and safety awareness. - Updates and Upgrades: Timely update and upgrade tank components and equipment as needed to meet new technology and safety requirements. - Regular Assessments and Monitoring: Regularly assess and monitor the tank, including structural integrity, corrosion conditions, and safety. Take appropriate maintenance and repair measures based on assessment results. - These measures can help extend the service life of carbon dioxide storage tanks and ensure their safe and reliable operation.

When using a 50-cubic-liter liquid oxygen tank, the following safety concerns should be noted: Fire and Explosion Prevention: Liquid oxygen is highly oxidizing and can support combustion. Therefore, avoid contact and ensure there are no open flames or other ignition sources nearby. Ventilation: Evaporation of liquid oxygen produces a large amount of oxygen, so good ventilation around the tank is essential to prevent oxygen buildup and the risk of explosion. Avoid High Temperatures: Liquid oxygen can cause combustion or explosion when in contact with high-temperature objects. Thus, avoid exposing the liquid oxygen tank to high-temperature environments or contact with hot objects. Pressure Control: Use the liquid oxygen tank according to its designed pressure and flow rate, avoiding exceeding its capacity. Regularly inspect and maintain the safety valve to ensure proper operation and prevent overpressure. Corrosion Prevention: Regularly inspect and maintain the liquid oxygen tank to prevent corrosion, especially on the tank surface and contact areas. Keep the area dry and clean to avoid corrosion. Safe Operation: Operators should receive training on safe operation procedures and standards for liquid oxygen tanks. Follow correct procedures, wear personal protective equipment, and ensure safety during operations. Emergency Preparedness: Establish an emergency plan and equip with appropriate fire extinguishing and first aid equipment when using the liquid oxygen tank. Operators should be familiar with emergency procedures and able to respond quickly to emergencies. Note that the above safety concerns are general recommendations. Specific safety operations should be based on the design and usage requirements of the liquid oxygen tank. Before using the liquid oxygen tank, it is recommended to refer to relevant safety operation manuals and guidelines to ensure safe operation.
Our company attaches great importance to technological innovation and R&D design. We have 1 municipal-level enterprise technology center in Heze City, with testing facilities for non-destructive testing, physical and chemical testing, welding testing, hydrostatic testing, and more. We are equipped with over 600 types 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 more. The key products we have developed, such as welding for temperature and pressure vessels, biomass boiler emission reduction, and waste heat utilization, have successively been selected for multiple Shandong Provincial Department of Industry and Information Technology innovation projects, key provincial 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 of Shandong University, has jointly developed deep cryogenic container processing technology using the international plasma arc + wire filling tungsten inert gas arc welding (PAW-GTAW) technology. After provincial-level scientific and technological achievement appraisal, the technical level has reached international standards in the field of deep cryogenic container manufacturing. Choose Zhongjie Special Equipment, and let's create brilliance together!