Air lift roof technology in the LNG tank construction process
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May I ask everyone, is the method of using compressed air to lift the tank roof during the construction of LNG tanks still in use today? What are the requirements for compressed air? For example: How high is the pressure? Is oil-free air required? Also, are there any LNG tanks under construction recently that might involve such work?
Currently, large LNG storage tanks still use air-blown lifting technology; the lifting pressure varies depending on the weight of the dome and the tank capacity, generally ranging from 15,000 Pa to 2,000 Pa. Large fans are used for this purpose, rather than air compressors.
There are likely many projects under construction; you can search online. In fact, apart from LNG, large propane tanks can also use the gas lift method