Low-temperature storage tank performance:
Low-temperature tanks, also known as liquid nitrogen tanks, low-temperature storage tanks, or liquid argon tanks, are vertical or horizontal double-layer vacuum-insulated storage tanks. The inner tank is made of austenitic stainless steel S30408. The outer container material varies by user location, selected as Q235-B or 345R according to national regulations. The space between the inner and outer containers is filled with insulating material, pumice, and vacuumed. The product undergoes on-site inspection by the National Technical Supervision Administration and is issued with a pressure vessel supervision and inspection certificate. The product specifications range from 5 to 100 cubic meters, with working pressure of 0.8/1.6 Mpa. Nitrogen is a main raw material for the nitrogen fertilizer industry. In the metallurgical industry, nitrogen is primarily used as a protective gas, required for processes like steel rolling, galvanizing, chrome plating, heat treatment, and continuous casting. Additionally, injecting nitrogen into the blast furnace can improve iron quality. It is widely used in the electronics, chemical, petroleum, and glass industries.
Liquefied Natural Gas (LNG) Storage Tank
Liquefied Natural Gas (LNG) storage tanks are specialized products designed for storing liquefied petroleum gas, classified as special equipment and third-category pressure vessels. They are made from 06Ni9DR material, undergo ultrasonic testing, hydrostatic and pneumatic testing, and are inspected on-site by the Technical Supervision Bureau, resulting in a pressure vessel inspection certificate. The manufacturing process includes external rust removal and painting, among other techniques. The LNG storage tanks undergo rigorous quality assessment for the material of the pressure components, appearance dimensions, weld quality, operational quality, installation quality, internal equipment, and safety accessories.
Routine physical and chemical tests of the drum material, such as mechanical properties and chemical composition.
The weld joints, weld seams, head of the tank, and the mutual geometric positions of all pressure elements are rigorously inspected through X-ray non-destructive testing and magnetic particle inspection. Tests are conducted on the product's密封性, pressure resistance, and all technical indicators that could affect the safe operation of the product.
Common structures for LNG tanks include: vertical LNG tanks, horizontal LNG tanks, vertical mother-child tanks, and atmospheric storage tanks.
Atmospheric Storage Tank:
We offer medium to large-sized atmospheric LNG storage tanks and extra-large atmospheric LNG storage tanks.
2. Cautionary Notes
1. Cylinders must be stored in well-ventilated areas, with a minimum distance of 1.5 meters from any flame or heat source. Cylinders are strictly prohibited from being heated with fire, boiled, or exposed to direct sunlight. Regular inspections of cylinder valves and pipeline joints for air tightness are required to ensure no leakage. Leaks can be checked using soap water, and it is strictly forbidden to test for leaks with an open flame.
2. When lighting, ignite the primer first, followed by opening the gas; do not reverse the order. There should be someone supervising during use, do not leave it unattended, to prevent boiling water from spilling and extinguishing the flame, which could cause the escaping liquefied gas to ignite and explode. After using the gas cylinder, the valve must be tightly closed to prevent gas leakage.
3. Do not completely exhaust the liquefied gas inside the cylinder; a certain residual pressure should be maintained. The residual pressure should generally be greater than 49.03 kPa (i.e., 0.5 kg/cm², gauge pressure) to prevent air from entering the cylinder. After the liquefied petroleum gas is used up, the remaining residue inside the cylinder is also a flammable substance and should not be poured out自行. This is to prevent fires from occurring due to the flow and evaporation of the residue.
4. LPG cylinders are pressurized containers that require proper maintenance and regular inspections. Prevent the cylinders from falling or colliding during handling and use. Do not use metal tools to敲击 open the valve. Protect them from direct sunlight and prolonged exposure to rain. Cylinders should be inspected every 2 years.
5. Although the explosive range of liquefied petroleum gas (LPG) is not very wide, due to its low limit, it's easy to ignite and explode upon leakage. Moreover, since LPG is heavier than air, it tends to flow downwards when leaking into the air, accumulating in low-lying areas and posing a hidden danger of gas explosion. Therefore, in areas prone to gas leakage, relying solely on window ventilation is insufficient; attention must also be paid to lower-level ventilation.
6. Upon discovering a liquefied gas leak indoors, immediately open windows and doors for ventilation, allowing it to disperse towards a direction without open flame. Prohibit any fire-making activities nearby. Use the facility only after the fault is rectified and the distinctive odor has dissipated. For any leaked waste on the ground, cover it with sand and soil before disposing of it to a safe location. In case of a gas cylinder fire, promptly close the valve, move it to an open area outside, and extinguish the fire using dry powder extinguishers, carbon dioxide extinguishers, or by covering it with a wet sack.
7. Educate children not to tamper with gas cylinders carelessly, and users must be aware of the safety knowledge for using gas cylinders.
