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-freezing vessels, pressure vessels, central air conditioning, engineering installation, international trade, and Internet of Things. It has three factory sites on Jinnan Road, East Changjiang Road, and Bohai Road, covering a total area 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 named a "Specialized and New Enterprise in Shandong Province" by the Department of Industry and Information Technology. In June 2022, it was identified as a "Gazelle Enterprise in Shandong Province" and in August 2022, it was recognized as a "Specialized and New Small Giant Enterprise" by the Ministry of Industry and Information Technology.
Carbon dioxide storage tanks possess the following characteristics: - High-pressure vessel: Carbon dioxide storage tanks are typically designed as high-pressure vessels, capable of withstanding significant pressure. This is because carbon dioxide requires high pressure at room temperature to maintain its liquid state. - High oxidizing potential: Carbon dioxide has a high oxidizing nature, supporting combustion. Therefore, when using and storing carbon dioxide, precautions must be taken to prevent contact to avoid the risk of fire and explosion. - Low-temperature storage: Carbon dioxide is a gas at room temperature but can be compressed into a liquid at lower temperatures. Hence, carbon dioxide storage tanks usually need excellent thermal insulation to maintain the low-temperature liquid state of stored CO2. - High density: Liquid carbon dioxide has a high density, allowing for the storage of large amounts of CO2 in a relatively small volume. This makes carbon dioxide storage tanks useful in scenarios requiring substantial CO2 supply. - Safety valves and pressure control: To ensure internal tank pressure remains within safe limits, carbon dioxide storage tanks are often equipped with safety valves and pressure control devices. These devices monitor and control internal pressure to prevent overpressure that could cause tank rupture. - Corrosiveness: Carbon dioxide has some corrosive properties, especially in high humidity conditions. Therefore, the materials and corrosion prevention measures for the tanks must consider the corrosiveness of CO2 to ensure tank durability and safety. These characteristics make carbon dioxide storage tanks widely applicable in various industries, such as food and beverage, industrial, fire suppression, and gas industries. When using carbon dioxide storage tanks, it is essential to adhere to relevant safety operating procedures and standards to ensure operational safety.

The cooling process for carbon dioxide storage tanks can vary depending on specific application requirements and design. Here is an example of a general cooling process for carbon dioxide storage tanks: Initial Cooling: When carbon dioxide enters the tank, it is typically cooled initially to lower its temperature. This can be achieved by passing the carbon dioxide through a condenser or cooler. The cooling medium can be cold water or refrigerant. Tank Cooling: After carbon dioxide enters the tank, it is necessary to continue cooling the tank itself to maintain the liquid state of the carbon dioxide. This can be done by setting up coolers or cooling pipes externally and circulating the cooling medium (such as cold water or refrigerant). Temperature Control: During the tank cooling process, the temperature inside the tank needs to be controlled to ensure that the carbon dioxide remains within an appropriate temperature range. This can be achieved through temperature sensors and control systems, which automatically control the temperature based on the set range. Insulation: To reduce heat transfer and energy loss, the tank is usually insulated. This can be done by setting up insulating materials (such as polyester foam or glass wool) externally to reduce heat conduction. Regular Inspection and Maintenance: In the cooling process of the tank, regular inspection and maintenance of cooling equipment and insulating materials are required to ensure their proper operation and effectiveness. This includes cleaning coolers, checking the integrity and effectiveness of insulating materials, etc. It should be noted that the specific cooling process for carbon dioxide storage tanks may vary due to different application scenarios and process requirements. In actual practice, process design and operation should be based on specific conditions to ensure the safety and performance of the tank. Consult engineers or storage experts for more information.

Dry ice is a solid refrigerant produced by directly converting carbon dioxide gas 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 drugs. 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 effect, 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, due to the reduction in temperature and the physical impact of the vaporization process, it can effectively remove dirt, bacteria, and viruses without leaving residues. Laboratories and scientific research: Dry ice also finds applications in laboratories and scientific research. It can be used for freezing samples, preparing low-temperature experimental environments, and manufacturing cold traps and condensers, etc. It should be noted that safety should be observed when using dry ice to avoid direct contact with skin and eyes, and to prevent its use in enclosed spaces to avoid carbon dioxide accumulation leading to oxygen deficiency.

Carbon dioxide storage tanks are equipment used for storing and transporting carbon dioxide gas, operating on the principles of pressure vessels and the physical properties of carbon dioxide. Pressure Vessel Principle: A carbon dioxide storage tank is a pressure vessel capable of withstanding the pressure of the internal gas. It is typically made of high-strength materials like steel. The design and structure of the tank can withstand high pressure, ensuring safe storage and transportation of the gas. Compressed Gas Storage: Carbon dioxide is a gas at room temperature but can be compressed into a liquid under high pressure. Storage tanks use high pressure to compress the gas into a liquid, achieving higher storage density. Liquid carbon dioxide occupies less volume, allowing for more gas storage. Level Control: The tank is equipped with a level control system to monitor and control the level of liquid carbon dioxide. This system usually includes level sensors and control valves, ensuring the tank's level remains within a safe range. Pressure Control: The tank also features a pressure control system to monitor and control the internal gas pressure. This system typically includes pressure sensors and safety valves, ensuring the pressure within the tank stays within a safe range, preventing damage or safety risks from excessive or low pressure. Through these principles, carbon dioxide storage tanks can safely store and transport carbon dioxide gas to meet the needs of various fields, such as food processing, beverage manufacturing, and fire extinguishing. When using carbon dioxide storage tanks, it is essential to follow the relevant safety operating procedures and guidelines to ensure safe operation and use.
Our company places great emphasis on 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. Our key products such as welding for temperature and pressure vessels, biomass boiler emissions reduction, and waste heat recovery have successively been included in multiple Shandong Provincial Department of Industry and Information Technology science and technology innovation projects, key provincial projects, and Heze City innovation and excellence projects. We have cumulatively 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 vessel processing technology using the internationally recognized plasma arc + filler wire tungsten inert gas arc welding (PAW-GTAW) technology. This technology has been appraised as reaching international standards in the field of deep cryogenic vessel manufacturing. Choose ZJ Special Equipment, and let's create brilliance together!