Shandong Zhongjie Special Equipment (formerly Heze Boiler Factory Co., Ltd.) was established in 2001, located at No. 2218 Jinnan Road, Economic and Technological Development Zone, Heze City. With a registered capital of 50 million yuan and total assets of 500 million yuan, the company has seven business centers: boilers, deep-freeze containers, pressure vessels, central air conditioning, engineering installation, international trade, and the Internet of Things. It has three factory sites on Jinnan Road, East Changjiang Road, and Bohai Road, covering a total of 200,000 square meters. The main workshop spans 83,000 square meters. Currently, it has 710 employees, including 247 engineers and technicians, and 82 intermediate-level technicians. 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 Ministry of Industry and Information Technology. In June 2022, it was recognized as a "Gazelle Enterprise in Shandong Province" and in August 2022, as a "Specialized and New Small Giant Enterprise" by the Ministry of Industry and Information Technology.
When using CO2 storage tanks, the following precautions should be taken: Safety Operation: Prior to operating a CO2 storage tank, it is mandatory to familiarize yourself with and adhere to the relevant safety operating procedures and guidelines. Ensure that operators have received necessary training and are aware of the tank's working principles, operating procedures, and emergency measures. Tank Inspection: Regularly inspect the external and internal conditions of the CO2 storage tank, including checking for corrosion, leaks, and welds on the tank walls. If any abnormalities or damage are found, take prompt repair or replacement actions. Tank Pressure Control: Maintain the internal pressure of the tank within a safe range. Monitor and control the tank's pressure to prevent damage or safety risks from excessive or low pressure. Fire Prevention Measures: CO2 is a flammable gas, so fire prevention measures must be observed when using it. Avoid open flame work near the tank and ensure the surrounding environment is free from fire hazards. Leakage Handling: In the event of a CO2 leak, appropriate emergency measures should be taken immediately. Promptly notify relevant personnel, ensure safe evacuation, and take steps to prevent the spread of the leak. Tank Maintenance: Regularly maintain and service the tank, including cleaning, lubrication, and corrosion prevention. Follow the manufacturer's recommendations and guidelines to ensure the tank operates normally and has a long service life. Compliance: Adhere to local regulations, standards, and specifications to ensure that the tank's design, manufacturing, installation, and use meet the corresponding requirements. It is crucial to strictly adhere to safety operating procedures when using CO2 storage tanks and to cooperate with relevant personnel to ensure the tank's safety and reliability.

Dry ice is a frozen agent obtained by directly converting carbon dioxide gas into a solid under high pressure. It has several applications: - Refrigeration of food and pharmaceuticals: Dry ice is widely used for the transportation and storage of food and pharmaceuticals. Due to its low temperature and rapid cooling speed, it can effectively maintain the freshness and quality of food and medicines. - Special effects and stage performances: Dry ice is also extensively used in special effects and stage performances. When it comes into contact with environmental heat, it rapidly turns into gas, producing a large amount of white smoke, creating a mysterious and dramatic atmosphere. - Cleaning and disinfection: Dry ice can also be used for cleaning and disinfection. When it comes into contact with surfaces, the combination of temperature reduction and the physical impact of the vaporization process can effectively remove dirt, bacteria, and viruses without leaving residues. - Laboratories and scientific research: Dry ice is also applied in laboratories and scientific research. It can be used to freeze samples, create low-temperature experimental environments, and make cold traps and condensers, among others. It is important to note that safety should be a priority when using dry ice, avoiding direct contact with skin and eyes, and not using it in confined spaces to prevent the accumulation of carbon dioxide, which can lead to oxygen deficiency.

Proper installation of a CO2 storage tank requires the following steps: Site Preparation: Choose an appropriate site for installation, ensuring the area is level, stable, and meets safety distance requirements. Clear the site of obstructions and fire sources. Foundation Construction: Construct a foundation based on the tank's dimensions and weight. The foundation must be strong and stable enough to support the tank's weight and pressure. Tank Installation: Place the tank on the foundation, ensuring there is adequate cushioning and fastening between the tank and foundation. Connect and secure the tank according to its design specifications. Pipe Connection: Connect the tank to the piping system as needed. Ensure the connections are sealed properly to prevent leaks. Safety Equipment Installation: Install the necessary safety equipment for the tank, such as safety valves, pressure sensors, and temperature sensors. Ensure these are correctly installed and connected. System Testing: Conduct system tests after installation, including pressure and leak tests, to ensure the tank and piping system operate normally and safely. Labeling and Warning Signs: Set up necessary labels and warning signs on the tank and piping system, including tank capacity and pressure information, to remind operators to maintain safety. Tank Maintenance: After installation, perform regular maintenance and care for the tank, including cleaning, lubrication, and inspections, to ensure normal operation and extend the tank's lifespan. Installation of CO2 storage tanks should be carried out by qualified installers, following relevant safety operation procedures and standards. Seek advice and guidance from experts.

The primary reason for pre-cooling a CO2 tank before use is to ensure that the CO2 inside remains in a liquid state and maintains a stable temperature throughout storage and supply processes. The pre-cooling process typically includes the following steps: 1. Tank Cooling: Before the tank is put into operation, it must be cooled to a sufficiently low temperature to convert the CO2 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 external cooling equipment. 2. Tank Pre-Charging: After the tank has been cooled, liquid CO2 must be pre-charged into the tank to fill it and maintain a certain pressure. The purpose of pre-charging is to provide an adequate supply of CO2 during storage and supply and to keep the tank pressure stable. By pre-cooling, the liquid state of the CO2 inside the tank is ensured, preventing premature evaporation and energy loss. Additionally, pre-cooling helps to lower the tank's temperature in advance, reducing CO2 evaporation and pressure fluctuations, thereby improving the tank's operational efficiency and safety. It is important to note that the specific methods and requirements for pre-cooling may vary depending on the tank design and application scenario. When performing pre-cooling operations, it is necessary to follow relevant safety operation procedures and standards to ensure the safety and effectiveness of the operation.
Our company highly values technological innovation and R&D, boasting a city-level enterprise technology center in Heze City. We have established testing facilities for non-destructive testing, physical and chemical testing, welding testing, hydrostatic testing, and more. Equipped with over 600 units of various instruments and equipment including CNC machine tools, X-ray flaw detectors, digital ultrasonic flaw detectors, mechanical property testing machines, chemical analyzers, spectrometers, tensile testing machines, and plasma welding machines, our key products and technologies such as thermal pressure vessel welding, biomass boiler emissions reduction, and waste heat utilization have successively been shortlisted for multiple Shandong Provincial Department of Industry and Information Technology innovation projects, Shandong key projects, and Heze City innovation and excellence 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 Yajiang Li from Shandong University, has developed deep cryogenic vessel processing technology using the internationally recognized plasma arc + filler wire tungsten inert gas arc welding (PAW-GTAW) technology. The provincial-level scientific and technological achievement identification has confirmed that our technology level in deep cryogenic vessel manufacturing has reached an international standard. Choose ZJ Special Equipment, and let's create brilliance together!