Shandong Zhongjie Special Equipment's main products include: fuel (gas) boilers, organic heat carrier boilers, biomass boilers, waste heat boilers, and other boiler products; vacuum insulation deep-freeze pressure vessels such as LNG storage tanks, oxygen/nitrogen/argon storage tanks, and CO2 storage tanks; pressure vessel products such as denitrification engineering equipment, heat storage and energy storage equipment, and complete chemical equipment sets; central air conditioning and HVAC equipment like ground (water) source heat pumps, air source units, water-cooled screw units, and air-cooled modular units. Planned products include large-scale energy centers, LNG transport vehicles, LNG tank containers, and other green energy equipment.
Common drawbacks of corrosion in pressure vessels during use include: Chemical Media: Certain chemical media are corrosive, such as acids, alkalis, salts, etc. When these media come into contact with the vessel material, corrosion may occur. Humidity and Moisture: High humidity environments or prolonged exposure to moisture can lead to corrosion on the vessel surface, especially when oxygen is present, which may accelerate the corrosion rate. Rusting: When the protective layer on the vessel surface (such as coatings or plating) is damaged or degraded, rusting may occur. Rusting can damage the surface of the vessel and may lead to further corrosion. Electrochemical Corrosion: When different metals or metal and non-metals come into contact, electrochemical corrosion cells may form. This type of corrosion can cause localized corrosion on the vessel surface. Welding Defects: Defects like weld pores and cracks may be introduced during the welding process. These defects may become starting points for corrosion. Corrosion can weaken the structural strength of the vessel, increasing the risk of leakage or rupture. Therefore, regular inspection and maintenance of the anti-corrosion coating, plating, or layer of pressure vessels are important. If corrosion issues are detected, timely measures should be taken for repair or replacement of damaged parts. Moreover, selecting appropriate materials and anti-corrosion measures, as well as proper operational and maintenance methods, can reduce the risk of corrosion in pressure vessels. Adhering to relevant safety operating procedures and standards ensures the safe operation of pressure vessels.

Dry ice is a frozen agent obtained by directly converting carbon dioxide gas into a solid under high pressure. It has several applications including: - Food and pharmaceuticals: Dry ice is widely used for the transportation and storage of food and pharmaceuticals. Its low temperature and rapid cooling speed 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 heat in the environment, it quickly 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 low temperature and physical impact of the vaporization process effectively remove dirt, bacteria, and viruses without leaving residues. - Laboratories and scientific research: Dry ice is also used in laboratories and scientific research. It can be used to freeze samples, create low-temperature experimental environments, and make cold traps and condensers, among other things. 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 enclosed spaces to prevent the accumulation of carbon dioxide leading to oxygen deficiency.

The reason for regular inspections of low-temperature liquid carbon dioxide storage tanks is to ensure their safety performance and normal operation. Due to the tanks being in a low-temperature and high-pressure environment, there are certain safety risks, such as leaks and structural failures. Regular inspections can detect potential issues early, allowing for appropriate repairs or maintenance to ensure safe operation. The specific inspection frequency should be determined according to relevant regulations and standards, and it is generally recommended to conduct regular inspections and maintenance. Typically, the interval for regular inspections of low-temperature liquid carbon dioxide storage tanks is between 1 to 3 years, with the exact interval potentially varying based on usage, age, design standards, and other factors. The content of regular inspections usually includes visual inspections of the tank, checks of valves and fittings, leak detection, and pressure testing. Additionally, regular checks and maintenance of the insulation layer should be performed to ensure its insulating properties. It is important to note that the specific inspection frequency and content should be determined based on local regulations, standards, and the manufacturer's recommendations. Inspections should be carried out by qualified personnel, and maintenance records should be documented for tracking and managing the tank's safety performance.

Carbon dioxide storage tanks offer several advantages: - High storage density: These tanks can compress carbon dioxide gas into a liquid state, significantly increasing storage density. Compared to storing it in gas form, liquid carbon dioxide can be stored in smaller tanks, saving space and costs. - Multiple application fields: Carbon dioxide storage tanks are widely used in various industries, including food and beverage, industrial, fire suppression, and gas supply. Carbon dioxide serves as a preservative, carbonation agent, gas, and extinguishing agent, with extensive applications and market demand. - Environmental and renewable: Carbon dioxide is an eco-friendly gas, and its increased concentration in the atmosphere contributes to warming and climate change. By storing and utilizing carbon dioxide, we can reduce its release into the atmosphere, promoting environmental protection and sustainable development. - Safe and reliable: During design and manufacturing, carbon dioxide storage tanks typically use high-strength materials (such as carbon steel or stainless steel) with excellent pressure resistance and safety. The tanks are usually equipped with safety valves, pressure gauges, and level indicators to ensure safe operation. Additionally, carbon dioxide is non-flammable and non-explosive, making it relatively safe. - Supply: These tanks provide a stable supply of carbon dioxide. Through tank design and control systems, precise measurement and supply of carbon dioxide can be achieved, meeting the needs of various industries and applications. These advantages make carbon dioxide storage tanks an essential storage and supply equipment, widely used across multiple industries. However, it is crucial to follow relevant safety operation procedures and standards when using carbon dioxide storage tanks to ensure safe operation and usage.
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