Shandong Zhongjie Special Equipment Co., Ltd. (formerly Heze Boiler Factory Co., Ltd.) was established in 2001, located at No. 2218 Jinnan Road, Development Zone, Heze City, with a registered capital of 50 million yuan and total assets of 500 million yuan. The company has 7 business centers: boilers, deep-freezing containers, pressure vessels, central air conditioning, engineering installation, international trade, and the Internet of Things. It has three factory areas on Jinnan Road, East Changjiang Road, and Bohai Road, covering a total of 200,000 square meters, with the main workshop spanning 83,000 square meters. It currently employs 710 staff, including 247 engineers and technicians, and 82 intermediate-level technical personnel. In December 2016, it was recognized as a "High-Tech Enterprise" by the Science and Technology Department. In June 2021, it was identified as a "Specialized and New Enterprise in Shandong Province" by the Industrial and Information Technology Department. In June 2022, it was recognized as a "Gazelle Enterprise in Shandong Province" and in August 2022, it was identified as a "Specialized and New Small Giant Enterprise" by the Ministry of Industry and Information Technology.
Low-Temperature Carbon Dioxide Storage Tank Related Knowledge 1. Structure of Low-Temperature Carbon Dioxide Storage Tanks Low-temperature carbon dioxide storage tanks typically have a double-walled cylindrical structure. The inner cylinder is made of 6MnDR alloy steel, while the outer cylinder is constructed from Q245R or Q345R pressure vessel steel plates. The piping is made of austenitic stainless steel, and the insulation space is filled with high-vacuum sintered sand or wrapped with multiple layers of insulation. The storage tanks are equipped with valves for operation, which are arranged for ease of use. Pressure gauges and level indicators are also installed to monitor the pressure and liquid level inside the tank. 2. Key Features of Low-Temperature Carbon Dioxide Storage Tanks (1) The tanks are fitted with liquid filling connections for trucks, allowing supply to vaporizers, trucks, and pumps. (2) Both the inner and outer cylinders are equipped with safety devices to ensure safe operation for users. (3) The insulation material of the low-temperature carbon dioxide storage tanks is specially treated to provide a longer vacuum life. Additionally, the tanks are equipped with vacuum gauges for measuring the insulation space vacuum when necessary. 3. Transportation of Low-Temperature Carbon Dioxide Storage Tanks (1) During road transportation, the storage tank should be securely fastened to the vehicle and travel at moderate speeds. It is prohibited to collide with other objects. (2) After the tank arrives, the unloading crew should work with the equipment supervisor to develop a scientific and reasonable unloading plan. 4. Installation of Low-Temperature Carbon Dioxide Storage Tanks (1) Upon arrival at the installation site, the tank can be positioned when conditions are suitable for installation. During the installation process, avoid impacts and strikes, and pay special attention to the explosion-proof equipment on the outer cylinder and the vacuum valve, which should not be touched. (2) Perform a gas-tightness test on the inner cylinder system of the low-temperature carbon dioxide storage tank using nitrogen to the working pressure. After checking that valves, pipes, flanges, etc., have no leaks, the installation is complete. (3) The installation dimensions are specified in the supply documents. When considering filling or emptying liquids with tank trucks, the vehicle's travel path should be taken into account.

To maintain the stability of CO2 storage tanks, attention must be given to the following details: - Foundation Design: The tank's foundation design must comply with relevant standards and regulations, ensuring adequate strength and stability. The foundation should consider the tank's weight, pressure, and geological conditions to ensure the tank is securely placed on the foundation. - Padding and Fixing Devices: Appropriate padding, such as rubber or steel pads, should be installed between the tank and foundation to reduce friction and vibration. Additionally, use fixing devices like bolts or welding to secure the tank to the foundation, preventing movement and tilting. - Site Leveling: The site where the tank is installed should be kept level with no significant tilting or unevenness. If there are issues of tilting or unevenness, adjustments and corrections should be made to ensure the tank's stability. - Anti-seismic Measures: In earthquake-prone areas, additional anti-seismic measures are required, such as setting up seismic supports and enhancing the tank's seismic resistance, to improve stability. - Regular Inspections: Regularly inspect the tank's fixing devices and connection points to ensure they are intact. If loose, worn, or damaged conditions are found, repairs or replacements should be made promptly. - Load Distribution: Uniformly distribute loads above the tank, such as platforms or pipelines, to balance the weight distribution and reduce the impact of uneven loads on stability. - Safety Distance: The tank should maintain a sufficient safety distance from other equipment, buildings, and fire sources to prevent accidental collisions or fires from affecting the tank's stability. It is important to note that the installation of CO2 storage tanks...

Installation and Operation Requirements for Low-Temperature Carbon Dioxide Storage Tanks: Installation Location Selection: When choosing the installation site for the tank, consider its weight and dimensions to ensure a solid and stable foundation. Additionally, keep it away from flammable and explosive materials and high-temperature sources to ensure safety. Safety Distance: Maintain a certain safety distance around the tank for routine inspections, maintenance, and emergency response. The safety distance should comply with relevant safety specifications and standards. Connection Pipelines: Use an appropriate connection method between the tank and pipelines to ensure a tight and reliable connection with no leaks. The connection pipelines should meet relevant standards and specifications. Pressure Relief Device: The tank should be equipped with a pressure relief device, such as a safety valve, to control the internal pressure of the tank. The set pressure of the pressure relief device should meet relevant requirements and be inspected and maintained regularly. Sealing Inspection: Regularly inspect the tank's sealing performance to ensure there are no leaks. Pay special attention to the sealing of valves, pipeline connections, and the tank itself. Temperature Control: Temperature control is necessary for low-temperature carbon dioxide storage tanks to maintain the低温 state inside. Ensure that the surrounding environment temperature is suitable and take corresponding insulation measures. Safety Protection: Set up appropriate safety protection facilities around the tank, such as guardrails and warning signs, to remind personnel of safety and prevent unauthorized access to the tank. Storage Capacity Control: Control the storage capacity of the tank according to actual needs to avoid exceeding the rated capacity. Overfilling can lead to excessive pressure in the tank, increasing safety risks.

Carbon dioxide is widely used as a shielding gas in metal welding processes during welding. The following are the main applications of carbon dioxide in welding: 1. Gas Metal Arc Welding (GMAW): Carbon dioxide is commonly used as a 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 of oxygen and water vapor, leading to a decrease in weld quality. By injecting carbon dioxide gas into the welding area, a protective atmosphere can be formed, preventing oxygen and water vapor from entering the welding area, thereby improving the quality and strength of the weld. 2. 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 adjust the arc stability, molten pool formation, and weld quality during the welding process, enhancing the welding effect. 3. Gas Shielded Brazing: Carbon dioxide can also be used in the gas shielded brazing process. During brazing, the carbon dioxide gas can provide a protective atmosphere, preventing oxidation and contamination in the brazing area, ensuring the quality of the brazed joints. 4. 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 can be formed, preventing oxidation and contamination in the cutting area, improving the cutting quality and speed. It should be noted that the application of carbon dioxide in the welding process 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.
Our company attaches great importance to technological innovation and R&D design. 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, etc. We have 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 technology 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 Science and Technology Innovation projects, key projects in Shandong Province, and Heze City Innovation and Excellence projects. We have累计 obtained 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 international plasma arc + filler wire tungsten inert gas arc welding (PAW-GTAW) technology. After being appraised as a provincial-level scientific and technological achievement, our technology level has reached international standards in the field of deep cryogenic container manufacturing. Choose Zhongjie Special Equipment, and let's create brilliance together!