GB253489A - Improvements in or relating to the distillation of liquids such as petroleum and similar hydrocarbons - Google Patents

Abstract

253,489. Bataafsche Petroleum Maatschappij. June 13, 1925, [Convention date]. Separate heater and evaporator apparatus.-In distilling hydrocarbon oils by the method of heat. ing the oil by passage through a tube furnace, and discharging the heated oil into vapour-separating chambers, the chambers and the subsequent dephlegmators and condensers are maintained under high vacuum. Oil from a container 1 is passed by a pump 2 through a tube furnace 4, and discharged into a vaporizing chamber 5 in which the liquid runs down the walls, and to which steam is passed by a pipe 6. Vapours pass through a rectifier 14, a dephlegmator 19, and condenser 21 leading to a condensate tank 22 evacuated by a vacuum pump. Unvaporized residue is withdrawn through a cooler 8 to a container 9 connected by a pipe 10 to a vacuum pump, or the hot residue is forced bv a pump through a second pipe coil in the furnace and into a second vaporizing chamber, the residue from which is passed through a third coil. The vapours from the second and third vaporizing chambers are treated in separate rectifiers, dephlegmators and condensers.