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What is the typical capacity of an LNG liquefied natural gas storage tank?

Classification: Industry Information

Time2024-10-07

LNG storage tanks are a type of chemical storage tank. LNG stands for Liquefied Natural Gas, which translates to liquefied natural gas. Therefore, LNG storage tanks are also called liquefied natural gas storage tanks, specifically used for storing liquefied natural gas. 2. What is the typical capacity of liquefied natural gas storage tanks?

1. What does LNG storage tank mean?

       LNG storage tank is a type of chemical storage tank. LNG stands for Liquefied Natural Gas, which translates to liquefied natural gas in English. Therefore, LNG storage tanks are also called liquefied natural gas storage tanks, specifically used for storing liquefied natural gas.

2. What is the typical capacity of liquefied natural gas storage tanks?

       Liquefied natural gas storage tanks come in vertical, horizontal, and double-walled types, among others. Different types of LNG storage tanks have different structures and capacities. So, how many types of LNG storage tanks are there?

       1. VerticalLNG storage tank

       The capacity of vertical liquefied natural gas storage tanks varies, generally available in specifications such as 50 cubic meters, 100 cubic meters, 150 cubic meters, and 200 cubic meters.

       2. Horizontal LNG storage tank

       The capacity of horizontal LNG storage tanks mainly includes two types: 60 cubic meters and 100 cubic meters.

       3. Double-walled LNG storage tank

       A double-walled tank refers to an inner tank composed of multiple sub-tanks arranged in parallel to meet large capacity storage needs, with several sub-tanks assembled within a large outer tank. The number of sub-tanks ranges from 3 to 7, generally not exceeding 12, and the volume of a single sub-tank should not be too large, typically between 100 to 150 cubic meters, with a maximum of 250 cubic meters. The overall volume can be 1000 cubic meters, 1750 cubic meters, or 2000 cubic meters.

       In addition to the common factory LNG storage tanks mentioned above, there are also some super-large liquefied natural gas storage tanks with capacities exceeding 200,000 cubic meters.

3. What types of LNG storage tanks are there? According to EU standards, there are four types of liquefied natural gas storage tanks:

       1. Single containment tank. The single containment tank is the initial form of LNG storage tank. In the early construction of large LNG storage tanks, single containment tanks played a very important role, but they are now rarely used in the LNG industry. Single containment tanks are characterized by easy leakage, a larger safety protection distance, lower design pressure, and higher requirements for safety inspection and operation. The cost of single containment tanks is relatively low, but they increase the land area and cost of the receiving station.

       2. Double containment tank. Both the inner and outer tanks of a double containment tank can independently contain LNG, improving safety compared to single containment tanks. Compared to single containment tanks, the safety distance between tanks and the safety distance between tanks and other structures are smaller. However, the cost and construction period of double containment tanks are higher. Currently, double containment tanks are more commonly used abroad.

       3. Full containment tank. A full containment tank consists of an outer tank and an inner tank. The inner tank is made of 9% Ni steel, while the outer tank is mostly made of prestressed reinforced concrete (there are also double metal full containment tanks). Both the inner and outer tanks can hold cryogenic liquids. Under normal circumstances, cryogenic liquids are stored in the inner tank, and when the inner tank leaks, the prestressed concrete outer tank can intercept and store LNG.

       4. Membrane tank. A membrane tank consists of a membrane inner tank, an insulation layer, and a prestressed concrete outer tank. The membrane is a special "corrugated" steel structure that allows for longitudinal and lateral free contraction at ultra-low temperatures, thereby offsetting low-temperature stress and deformation.

Keyword： What is the typical capacity of an LNG liquefied natural gas storage tank?

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