Liquefied Natural Gas (LNG) storage tanks are specialized products for storing LNG, classified as special equipment and type III pressure vessels. They are made of 06Ni9DR material, and undergo non-destructive testing, hydrostatic and pneumatic testing, as well as on-site inspection by the Technical Supervision Bureau, resulting in a pressure vessel inspection certificate. The manufacturing process also includes external rust removal and painting. The LNG storage tanks undergo rigorous quality assessment for the material, dimensions, weld quality, operational quality, installation quality, internal equipment, and safety accessories.
Routine physical and chemical tests for the tank material, such as mechanical properties and chemical composition.
Rigorous X-ray non-destructive testing and magnetic particle inspection are conducted on the weld joints, seams, tank end caps, and the geometric positions of all pressure elements. Tests for product密封性, pressure resistance, and all technical indicators that may affect the safe operation of the product are also performed.
Common LNG storage tank structures include: vertical LNG tanks, horizontal LNG tanks, vertical mother-daughter tanks, and atmospheric storage tanks.
Vertical LNG Storage Tank
Volume options include 50, 100, 150, and 200 cubic units.
Horizontal LNG Storage Tank
Volume options include 60 cubic and 100 cubic.
Vertical mother and daughter drums
The mother tank refers to an inner tank composed of multiple sub-tanks connected in parallel to meet large storage capacity requirements. Multiple sub-tanks are assembled side by side within a large outer tank. The number of sub-tanks typically ranges from 3 to 7, usually not exceeding 12. The volume of a single sub-tank should not be overly large, usually between 100 to 150 cubic meters, with the maximum reaching 250 cubic meters. Common sizes include 1000 cubic meters, 1750 cubic meters, and 2000 cubic meters.
Atmospheric Storage Tank:
We offer large and medium-sized atmospheric LNG tanks, as well as extra-large atmospheric LNG storage tanks.
1. LNG Storage Tank System: The LNG storage system consists of low-temperature storage tanks, auxiliary pipelines, and control instruments. 2. Categorized by Capacity: Small natural gas storage tanks, 5-50 cubic meters, commonly used in civil gas liquefaction stations, LNG refueling stations, etc.; medium-sized natural gas storage tanks, 50-100 cubic meters, commonly used in satellite liquefaction units, industrial gas liquefaction stations, etc. 3. Natural Gas Storage Tanks, LNG pipelines typically use austenitic stainless steel pipes, which possess excellent low-temperature properties. 4. Vertical Natural Gas Storage Tanks (LNG Tanks): Insulation is achieved through vacuum powder insulation technology, with the inner cylinder and pipeline materials made of OCr18Ni austenitic stainless steel, and the outer cylinder made of high-quality carbon steel Q345R pressure vessel steel plate. Our company offers a variety of 50-100 cubic meter liquid natural gas storage tanks. 5. Applications of Natural Gas Storage Tanks: Chemical fuel, residential fuel, automotive fuel, combined power generation, heat pumps, fuel cells, etc. 6. LNG Liquefaction Process: Cascade liquefaction process, mixed refrigerant liquefaction process, liquefaction process with an expander. 7. The LNG liquefaction plant consists of natural gas pretreatment process, liquefaction process, storage system, control system, and fire protection system.
