圧縮空気によるタンクの除湿について

概要

論文の詳細を見る
To prevent explosion and the forming of sherbet-shaped ice, L.P.G. (Liquified Petroleum Gas) tanks in low temperature systems are air-purged and dehydrated by the charging of N2 gas just prior to the loading of L.P.G. gas. To reduce the volume of N2 gas and save the port time for loading of L.P.G. gas, we have been dehydrating L.P.G. tanks by using special dehydration machines such as Lituium chloride (Licl) dryer prior to charging N2 gas in shipyrds. We have studied and developed a new way of dehydration by using compressed air in the shipyard and have applied it to the L.P.G. tanks of a 53,000 deadweight tons L.P.G. & oil carrier built in Jnne. 1966. This method is more effective than the conventional one and also can be applied to reduce humidity in general tanks and to facilitate painting of same. The Main Conclnsions are as follows. 1. General tanks can be dehydrated down to a humidity almost the same as that of the compressed air at the air chainging ratio of 2.0-2.5 M3/M3. Actually we could get a dew point of-1-5℃ at the changing ratio of 2.1 M3/M3. 2. The compressed air is very useful for tank painting. It prevents tank snrface from sweating. 3. The compressed air is available very easily and it costs much less than the conventional method in shipyards.
社団法人日本船舶海洋工学会の論文
1967-02-28