Abstract: A device is disclosed for vaporing liquid fuel before introduction into a combustion chamber comprising a heat pipe containing heat transfer fluid communicating with additional fluid external to the heat pipe.

Abstract: Ferrierite is prepared by maintaining at a temperature from about 170.degree. to 215.degree.C an aqueous mixture of amorphous silica-alumina and sodium and potassium compounds wherein from about 65 to about 90 mol % of the alkali metal as X.sub.2 O wherein X represents Na and K originates from salts of at least one polybasic acid having a pK value greater than 10.degree. at 18.degree.C for the highest dissociation step, and the molar fraction of potassium to total sodium and potassium content is from about 10 to 45%, until ferrierite crystals are formed.

Abstract: A method for producing uninhibited transformer oil is disclosed which includes isolating a petroleum distillate that is primarily naphthenic and aromatic in character, boiling above 400.degree.F, having a viscosity between 50 and 100 SSU at 100.degree.F, and containing sulfur compounds; contacting the distillate with a solvent selective for aromatic hydrocarbons under conditions to produce a raffinate phase containing 15-30%v aromatic hydrocarbons; hydrotreating the raffinate phase to reduce the nitrogen content to at most 25 PPM, to maintain the sulfur content greater than 0.08%w, and to maintain the aromatic hydrocarbon content greater than 15%v. The product is an uninhibited transformer oil, and it can be further improved by regenerative clay treatment and by the addition of certain aromatic hydrocarbon compounds containing two or more six carbon membered fused or unfused rings, at least one of which is a benzene ring.

Abstract: In a storage installation for liquefied gas in a storage vessel surrounded by a wall which forms a collecting space around the vessel, the surfaces of the ground of the collecting space and/or the wall comprise a layer of a heat insulating material, whereby any liquefied gas collected in said collecting space evaporates more slowly thereby reducing hazard from gas vaporized in said collecting space.