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 modular units. Planned products include large-scale energy centers, LNG transport vehicles, LNG tank containers, and other green energy equipment.
Carbon dioxide is widely used as a shielding gas in the metal welding process during welding. The following are the main applications of carbon dioxide in welding: Gas Metal Arc Welding (GMAW): Carbon dioxide is commonly used as the shielding gas in the GMAW welding process. In GMAW welding, the arc generates high temperatures in the welding area, which can also cause oxidation reactions with oxygen and water vapor, leading to reduced weld quality. By injecting carbon dioxide gas into the welding area, a protective atmosphere is formed, preventing oxygen and water vapor from entering, thereby improving the quality and strength of the weld. Mixed Gas Shielding Welding (GMAW): Carbon dioxide is also often mixed with other gases (such as argon) to form mixed gas shielding welding. The use of mixed gases can regulate the arc stability, molten pool formation, and weld quality during welding, enhancing the welding effect. Gas Shielded Brazing: Carbon dioxide can also be used in the gas shielded brazing process. During brazing, the carbon dioxide gas provides a protective atmosphere, preventing oxidation and contamination in the brazing area, ensuring the quality of the brazed joints. Gas Shielded Cutting: Carbon dioxide can also be used in the gas shielded cutting process. In gas shielded cutting, by injecting carbon dioxide gas into the cutting area, a protective atmosphere is formed, preventing oxidation and contamination in the cutting area, improving the quality and speed of cutting. It is important to note that the application of carbon dioxide in welding needs to be adjusted and optimized according to specific welding materials, methods, and requirements. When using carbon dioxide for welding, it is necessary to follow relevant safety operating procedures and guidelines to ensure the safety and quality of the welding process.

In recent years, the surge in the development of low-temperature liquid storage tanks can be attributed to the following factors: 1. Increasing Energy Demand: As economic growth and population expansion continue, there is a growing need for energy. Low-temperature liquid storage tanks are primarily used for storing liquid gases (LNG), liquid oxygen (LOX), liquid nitrogen (LIN), and other low-temperature liquid energy sources to meet the rising energy demand. 2. Greenhouse Gas Emission Reduction: These storage tanks can store and transport liquid carbon dioxide (CO2) for carbon capture and storage (CCS) technologies, aiding in the reduction of greenhouse gas emissions. With heightened awareness of environmental protection and climate change, the demand for low-temperature liquid storage tanks in the CCS field has also increased. 3. Industrial Development Needs: The application of low-temperature liquid storage tanks in the industrial sector is also on the rise. For instance, in industries such as chemicals, pharmaceuticals, food and beverages, there is a need for storing and transporting low-temperature liquid raw materials or products like liquid nitrogen, liquid oxygen, and liquid ethylene. As these industries grow, so does the demand for low-temperature liquid storage tanks. 4. Technological Advancements and Innovation: In recent years, there have been continuous advancements and innovations in the design, manufacturing, and transportation of low-temperature liquid storage tanks. The application of new materials, optimization of tank structures, and improvements in safety control systems have made these tanks safer and more reliable, further propelling their peak development. In summary, the factors of increasing energy demand, greenhouse gas emission reduction, industrial development needs, and technological advancements and innovation have collectively driven the peak development of low-temperature liquid storage tanks in recent years. As related industries continue to grow and technology advances, these trends are expected to persist.

Before using the CO2 storage tank, the following preparatory steps must be taken: - Inspect the tank: Check for any visible damage, corrosion, or oil leakage. Ensure the structural integrity and safety of the tank. - Check valves and piping: Verify that the tank's inlet and outlet valves and piping connections are in good condition with no leaks or loose fittings. Ensure valve operation is smooth and reliable. - Inspect safety accessories: Check the functionality of the tank's safety accessories, such as safety valves, pressure sensors, and temperature sensors. Confirm that their set parameters meet requirements. - Check the level measurement system: Verify the accuracy and reliability of the level measurement system. Calibrate the level sensors to ensure precise level measurements. - Inspect pressure relief devices: Check that the tank's pressure relief devices (such as safety valves) are functioning properly. Confirm that the set pressure of the relief devices meets specifications. - Check gas quality: Ensure the CO2 gas in the tank meets quality standards, free of impurities or contaminants. - Inspect fire protection equipment: Confirm that fire protection equipment around the tank is in good condition and check that extinguishers, sprinkler systems, etc., are operational. - Train operators: Operators must receive training on the characteristics, operational requirements, and safety measures of the CO2 storage tank. Training should include safe operation, leak handling, and emergency procedures. - These preparatory steps ensure the CO2 storage tank is in optimal condition before use, guaranteeing safety and reliability in operation. Follow relevant safety operating procedures and have trained personnel handle the preparations.

二氧化碳储罐在使用过程中可能会遇到一些常见问题，需要进行维修和处理。以下是一些常见的问题和相应的维修方法： 泄漏问题：储罐可能出现泄漏，导致二氧化碳的损失和安全隐患。维修方法包括检查和更换密封件、修复或更换泄漏的管道和阀门等。 腐蚀问题：储罐的外壁和内壁可能会受到腐蚀，影响储罐的结构和安全性。维修方法包括清洗和修复腐蚀部位，涂覆防腐涂层，或者更换受损的部件。 压力问题：储罐的压力可能出现异常，过高或过低，影响储罐的正常运行。维修方法包括检查和调整压力控制系统，修复或更换压力传感器、安全阀等。 温度问题：储罐的温度可能出现异常，过高或过低，影响二氧化碳的储存和使用。维修方法包括检查和调整温度控制系统，修复或更换温度传感器、冷却设备等。 控制系统问题：储罐的控制系统可能出现故障，导致无常控制和监测储罐的运行状态。维修方法包括检查和修复控制系统的电气元件、传感器、仪表等。 需要注意的是，对于二氧化碳储罐的维修和处理，应由的技术人员进行操作，并遵循相关的安全操作规程和标准。在维修过程中，应确保储罐的安全性和稳定性，以及维修过程的安全性。好咨询工程师或储罐制造商的建议和指导。
Our company highly values technological innovation and research and development, boasting 1 municipal enterprise technology center in Heze City. We have established test facilities for non-destructive testing,理化testing, welding, and hydrostatic testing, equipped with over 600 instruments and equipment, including CNC machine tools, X-ray flaw detectors, digital ultrasonic flaw detectors, mechanical property test machines, chemical analyzers, spectrometers, tensile test machines, and plasma welding machines. The key products and technologies we have developed, such as thermal-pressure vessel welding, biomass boiler emissions reduction, and waste heat utilization, have successively been shortlisted for multiple Shandong Province Industrial and Information Technology Department innovation projects, Shandong Province key projects, and Heze City innovative and excellent projects. We have cumulatively obtained 27 authorized utility model patents, 16 authorized invention patents, participated in drafting 2 standards, 2 industry standards, and registered 15 trademarks. The technical team, in collaboration with Professor Yijiang Li from Shandong University, has developed deep cryogenic vessel processing technology, utilizing the internationally renowned plasma arc+fillet tungsten inert gas (PAW-GTAW) technology, and has been appraised at the provincial level for its scientific and technological achievements, reaching an international level in the field of deep cryogenic vessel manufacturing. Choose ZJ Special Equipment, and let's create brilliance together!