An increasing number of companies require the use ofLiquefied Gas Storage TankSteel storage tanks are specialized equipment for storing various liquids or gases. Many businesses cannot operate normally without storage containers for energy, especially when stockpiling various materials. In such cases, storage containers of different types and capacities are indispensable. Most oil storage facilities are above ground and are predominantly constructed with metal structures.Liquefied Gas TankThe usage is quite extensive; such containers are needed in various enterprises. Oil storage tanks, as storage equipment for oil and gas pipeline transportation, are containers used for storing oil and ensuring a stable oil transportation volume. The oil storage tanks used at the first station of oil transportation pipelines are for storing oil and collecting oil to ensure a stable oil transportation volume, while the tanks used at the end stations are primarily for receiving and storing oil. Oil is supplied to users through these tanks. The vast majority of plastic storage tanks require molding processing technology. During the molding process, the molds are under quite high pressure, utilizing widely applied compression molding, which is formed through extrusion and injection molding. Large-sized components produced by molding processes must withstand significant pressure, necessitating particularly robust design and manufacturing of molding equipment, which is quite challenging and increases costs. Corrosion-resistantLiquefied Gas Storage TankUtilizing rotational molding technology, these tanks require a robust frame that can support the material, the mold, and the frame's own weight to prevent leakage. Even for large-scale or extra-large plastic storage tank components, producing corrosion-resistant tanks doesn't necessitate heavy machinery or molds. The process of machining and manufacturing is particularly convenient, with low production costs and a short cycle time.
The loading and unloading areas for liquid ammonia tanks should be prohibited from being set near densely populated areas such as schools, hospitals, and residential districts. The quantity of liquid ammonia stored must meet the national standards or relevant national regulations in terms of major hazard sources, and the distances from the following locations and areas must comply: 1. densely populated areas such as residential areas, commercial centers, and parks; 2. public facilities such as schools, hospitals, cinemas, and stadiums; 3. water sources, water plants, and protected water source areas; 4. stations, docks (excluding those specifically approved and engaged in hazardous chemical handling and unloading as per national regulations), airports, highways, railways, waterways, subway ventilation shafts and entrances/exits; 5. basic farmland protection areas, pastoral areas, fishery waters, and production bases for seeds, breeding animals, and fish seedlings; 6. rivers, lakes, scenic spots, and nature reserves; 7. military禁区 and military management areas; 8. other areas protected as stipulated by laws and administrative regulations.
Liquefied ammonia storage tanks, as a special type of pressure vessel, are widely used in the chemical industry for transporting strong acids and alkalis. Over the years, it has been found that liquid ammonia storage tanks rarely experience strength failure, with most incidents being due to corrosion cracks. The corrosion issue with liquid ammonia storage tanks is drawing increasing attention, as many safety concerns arise from their insufficient corrosion resistance. Generally, cracks in the weld areas on the inner surface of the tank are quite severe, often occurring on circumferential welds, without plastic deformation at the crack mouth, exhibiting typical brittle crack characteristics. The cracks are mostly shallow and elongated with distinct branches, with the main crack perpendicular to the weld direction, especially at the start and stop points of manual electric arc welding, T-joints, and where the head flange ring weld intersects with the cylindrical longitudinal weld. In addition to enhancing inspection of welds, manufacturers of liquid ammonia storage tanks must also strengthen the inventory management of welding rods and ensure that different rods are not mistakenly used during operations involving various equipment, as this can compromise product quality.
