Shandong Zhongjie Special Equipment (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-freeze containers, 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 of 200,000 square meters, with the main workshop spanning 83,000 square meters. It currently employs 710 people, 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 named a "Specialized and New Enterprise in Shandong Province" by the Ministry 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.
Low-temperature liquid storage tanks feature the following characteristics and advantages:
Features:
Low-Temperature Storage: Low-temperature liquid storage tanks can store low-temperature liquids (such as liquid nitrogen, liquid oxygen, etc.) at low temperatures, maintaining their liquid state. Liquid storage significantly increases storage density and saves space.
Insulation: The low-temperature liquid storage tanks are equipped with special insulation materials and structural design, effectively reducing heat conduction and heat loss, maintaining a stable temperature for the low-temperature liquids. This helps to minimize energy loss and liquid evaporation.
Safety: Low-temperature liquid storage tanks have excellent safety performance. The tanks are made of special materials and designed with unique structures to withstand low temperatures and high pressure environments. Additionally, the tanks are equipped with safety devices such as pressure relief valves and liquid level alarms to ensure safe operation and use.
Utilization Advantages:
High Purity Supply: Low-temperature liquid storage tanks can provide high-purity liquid substances. Through refrigeration and purification processes, high-purity liquid gases can be obtained, meeting the needs of applications in industries such as industrial and scientific research.
Long-term Storage: Low-temperature liquid storage tanks are designed for long-term storage of low-temperature liquids, extending their service life. By controlling the temperature inside the tank and the performance of the insulation layer, the evaporation and oxidation of the liquid can be slowed down, maintaining its stability and purity.
Wide Application in Multiple Fields: Low-temperature liquid storage tanks are extensively used in industries, scientific research, and other fields. They can be used to store liquid oxygen, providing oxygen supply; in the industrial sector, they are used for storing liquefied natural gas (LNG) and other process gases like liquid nitrogen; in scientific research, they are utilized for storing low-temperature experimental samples.
Environmental Protection and Energy Saving: Low-temperature liquid storage tanks enable effective storage and utilization of low-temperature liquids, reducing energy waste and environmental pollution. Storage of liquid substances

The reason for occasional venting of liquid oxygen tanks is primarily to maintain the safe pressure range within the tank and prevent excessive pressure buildup. Here are several situations where liquid oxygen tanks may be vented occasionally:
Pressure Control: During operation, the pressure inside the liquid oxygen storage tank may change due to evaporation of the liquid oxygen and temperature variations. To maintain a safe pressure range within the tank, regular venting is required to control the tank's pressure within the safe limits.
Prevent Overpressure Build-up: During the oxygen filling or usage process, external factors or operational errors may cause the pressure inside the liquid oxygen tank to exceed the safe limit. To prevent overpressure accumulation, timely venting is required to alleviate the pressure within the tank.
Prevent Gas Accumulation: Liquid oxygen tanks may contain some gas impurities, such as air and water vapor. These gases can condense into liquids or solids at the low temperatures of liquid oxygen, blocking pipes or affecting the normal operation of the tank. Regularly releasing gas can expel these impurities, maintaining the tank's cleanliness and unobstructed flow.
Note that the venting operation of liquid oxygen should be conducted by trained personnel, strictly adhering to the relevant operational procedures and safety measures. During the venting process, care should be taken to prevent leaks of liquid oxygen and contact with it, ensuring the safety and reliability of the operation.

Liquid Argon Storage Tanks are equipment used for storing and transporting liquid argon, with the following scope of application and characteristics:
Application Scope:
Industrial Applications: Liquid argon storage tanks are widely used in various industrial sectors, such as metal processing, electronic manufacturing, semiconductor production, and more.
Application: Liquid argon storage tanks are used in the field for cryogenic preservation of biological samples, cells, tissues, and vaccines.
Laboratory Applications: Liquid argon tanks are used in scientific research laboratories for low-temperature experiments, cryopreservation, and sample processing, etc.
Features:
Low-temperature Performance: As liquid argon has a boiling point of -185.7°C, the liquid argon storage tank must have excellent low-temperature insulation properties to maintain the低温 state of the liquid argon.
High sealing property: Liquid argon storage tanks must have excellent sealing performance to prevent evaporation loss of liquid argon and the entry of external air.
Safety: Liquid argon is a flammable and explosive substance; therefore, liquid argon storage tanks must be equipped with safety valves, leak detectors, and other safety devices to ensure safe operation.
High Capacity: The capacity of liquid argon storage tanks ranges from a few liters to several thousand liters, allowing for selection of an appropriate capacity based on demand.
Cautionary Notes:
Protective Gear: When operating liquid argon tanks, it is mandatory to wear appropriate protective gear, including gloves, protective clothing, and non-slip shoes, to safeguard against the low temperatures of liquid argon and other hazards.
Ventilation Requirements:

When cleaning low-temperature liquid storage tanks, the following steps should be taken:
Safety Preparations: Prior to cleaning, ensure there are no remaining liquids or gases in the tank, and confirm that it has been properly emptied and vented. Wear appropriate personal protective equipment, such as protective suits, gloves, and safety shoes.
Cleaning Agent Selection: Choose a cleaning agent suitable for low-temperature environments and liquid storage tank materials. Common cleaning agents include acidic and alkaline solutions, organic solvents, or specialized cleaning agents. Select an appropriate cleaning agent based on the tank material and the nature of the contaminants.
Cleaning Process: Inject the cleaning agent into the tank and clean the inner wall with appropriate tools (such as a sprayer, brush, or high-pressure water). Multiple cleanings may be performed as needed to ensure all contaminants are removed.
Washing and Discharging: After cleaning, rinse with clean water or an appropriate solvent to remove cleaning agents and residues. Ensure the tank is dry and discharge the rinse water into an appropriate treatment system.
Inspection and Verification: After cleaning, inspect the tank to ensure no residual contaminants remain inside. Appropriate detection equipment or methods, such as optical inspection, chemical analysis, or ultrasonic testing, can be used to verify the cleaning effectiveness.
Be mindful that when cleaning low-temperature liquid storage tanks, it is crucial to adhere to relevant safety regulations and operational guidelines. Liquid storage tanks are typically highly flammable and possess low-temperature characteristics, so operators must strictly follow safety procedures to ensure the safety of personnel and equipment. During the cleaning process, be cautious to prevent leaks of cleaning agents and contaminants, and take appropriate measures for their handling and disposal.
Zhejiang ZheJie Special Equipment Co., Ltd. adheres to the grand vision of "realizing employees' dreams, creating value for customers, and striving for the prosperity and strength of our motherland," wholeheartedly devoting itself to the development of green energy equipment. We offer society products and services with high performance and cost-effectiveness!