| abstract |
915,413. Storing liquefied gases. CHICAGO BRIDGE & IRON CO. July 19, 1961 [Dec. 23, 1960]. No. 26076/61. Class 8(2). A vapour relief duct 26 of a heat insulated liquefied gas e.g. butane container 10 is surrounded by a condenser 20 down which passes liquefied gas having been withdrawn from the container by a pump 17 and sub-cooled in an exchanger 14 itself cooled by external refrigeration system 11-13. Any uncondensed low boiling impurities are discharged to atmosphere through a purge line 32, Fig. 2 (not shown). |