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 engineering and technical staff 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, it was identified as a "Specialized and New Small Giant Enterprise" by the Ministry of Industry and Information Technology.
Zhongjie Special Equipment Co., Ltd. is a company specializing in the manufacturing of low-temperature liquid storage tanks. They offer design, manufacturing, and installation services for low-temperature liquid carbon dioxide storage tanks. Below is an overview of the low-temperature liquid carbon dioxide storage tanks produced by Zhongjie Special Equipment: Tank Type: The storage tanks produced by Zhongjie Special Equipment are typically vertical or horizontal in design, chosen based on customer requirements and site conditions. Material: The tanks are mainly made of low-temperature steel, offering excellent corrosion and low-temperature resistance. Insulation: The tanks are internally insulated to reduce heat transfer and liquid evaporation. The insulation usually consists of multi-layer structures, including thermal insulation materials and an external protective layer. Safety Valves and Pressure Relief Devices: The tanks are equipped with safety valves and pressure relief devices to control internal tank pressure, preventing overpressure and explosion. Level Indicators: The tanks are fitted with level indicators for monitoring liquid levels within the tank, ensuring controlled and managed storage volumes. Safety Measures: Zhongjie Special Equipment's low-temperature liquid carbon dioxide storage tanks comply with relevant safety specifications and standards, employing various safety measures such as fire and explosion prevention, leak detection, and alarm systems. Customized Design: Based on customer needs and application scenarios, Zhongjie Special Equipment can provide customized design and manufacturing services to meet the specific requirements of different customers.

When using carbon dioxide tanks, pay attention to the following aspects: - Safe Operation: Operators must be trained to understand the characteristics, operational requirements, and safety measures of carbon dioxide tanks. Adhere to relevant safety operation procedures and standards to ensure operation safety. - Tank Inspection: Regularly inspect the tank's appearance, sealing, valves, and pipeline connections before use. If any abnormalities or damage are found, repair or replace them promptly. - Tank Placement: Place the tank in a well-ventilated, dry area free of fire sources. Avoid direct sunlight and high-temperature environments to prevent overheating. - Leak Protection: Ensure that the tank's valves and pipeline connections are sealed properly to prevent carbon dioxide leaks. Regularly inspect and replace seals, and promptly address any leaks. - Pressure Control: Maintain the tank's internal pressure within a safe range. Check the tank's pressure gauge and safety valve before use to ensure proper operation. Avoid excessive or low pressure to prevent safety accidents. - Fire Prevention: Carbon dioxide is flammable, so be cautious with fire prevention measures. Smoking, open flames, or flammable materials are prohibited near the tank. - Exhaust Emission: Properly discharge exhaust gases generated when using carbon dioxide tanks to avoid carbon dioxide accumulation in enclosed spaces, which can lead to asphyxiation and safety risks. - Emergency Preparedness: Develop and implement an emergency response plan, including leak incident management, evacuation procedures, and first aid measures. Operators should be familiar with the plan and conduct regular drills. Note that carbon dioxide tank usage should be performed by authorized operators, following relevant safety operation procedures and standards. Seek advice and guidance from experts.

Carbon dioxide tank level gauges are devices used for measuring and monitoring the liquid level of CO2 within the tank. Depending on different working principles and application requirements, common types of CO2 tank level gauges include the following: - Buoy Level Gauges: Utilize the buoyancy of a float to indicate liquid level heights, measured through mechanical devices or electrical signal sensors connected to the float. - Pressure Level Gauges: Measure the liquid level by leveraging the relationship between liquid pressure and level. The liquid's pressure change on the pressure sensor is used to calculate the liquid level height. - Ultrasonic Level Gauges: Measure the liquid level using the propagation time of ultrasound. An ultrasonic transmitter emits waves, and when the beam encounters the liquid surface, part of it is reflected back. The liquid level height is calculated by measuring the reflection time. - Capillary Level Gauges: Use the capillary principle to measure the liquid level. By inserting a thin tube into the liquid, it rises within the tube, and the liquid level height is calculated based on the rise. - Level Gauges: Measure the liquid level by reflecting waves. A transmitter emits waves, and when the beam hits the liquid surface, part of it is reflected back. The liquid level height is calculated by measuring the reflection time. The application of these level gauges in CO2 tanks can be selected based on specific requirements and tank design. When selecting and installing level gauges, factors such as liquid properties, working environment, and precision requirements must be considered, and they must be ensured to match the tank's safe operation and monitoring system.

Dry ice is a frozen agent formed by directly converting carbon dioxide gas into a solid under high pressure. It has several applications: - 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 quickly 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 temperature drop 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 is also applied in laboratories and scientific research. It can be used to freeze samples, prepare low-temperature experimental environments, and create cold traps and condensers, among others. It should be noted that safety should be observed 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 could lead to oxygen deficiency.
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 temperature and pressure vessel welding, biomass boiler emission reduction, and waste heat utilization, have successively been included in multiple Shandong Provincial Department of Industry and Information Technology science and technology innovation projects, Shandong Provincial key projects, and Heze City innovation and excellence projects. We have accumulated 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 Yajiang Li 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 provincial-level scientific and technological achievement evaluation, the technology level has reached an international standard in the field of deep cryogenic container manufacturing. Choose Zhongjie Special Equipment, and let's create brilliance together!