GB117615A - Improved Process and Apparatus for the Continuous Fractional Distillation of Petrols, Petroleums, Benzols and the like. - Google Patents

Abstract

117,615. Barbet et fils et Cie, E. July 3, 1917, [Convention date]. Addition to 9088/14. Hydrocarbons, distilling.-In the continuous fractional distillation of petroleum, benzol, &c., the hydrocarbon is first dehydrated in an apparatus A, is then treated at atmospheric pressure in a plate column B for the separation of various grades of petrol, and is finally separated into white spirits, lighting petroleums, and a vaselinous residue by passage through apparatus D, E, F in succession. The apparatus D, E, F are under vacuum; the element E is heated by vapours generated in the element F, and the distillation in the element D is effected by the subjection of the hot liquid from the element B to the vacuum. The crude petroleum enters the dehydrating- column A by a pipe A' and the water with some of the petrol is evaporated by steam coils a<2>. The vapours are led to a condenser A<2>, and the petrol and water are separated in a testing-device a, the petrol being led to the boiler B' of the petrol-distilling column B. The dehydrated tar flows through a pipe b to the column B. Gasoline is obtained in a condenser B<2> receiving vapour from the column B and is led away by a pipe 1<1>. Petrol of various grades is collected from appropriate plates of the column B by means of pipes 2, 3, 4, 5. The hot petrol-free oil flows through a pipe b<2> to the column D and evaporates under the reduced pressure. Three grades of distillate are collected by pipes 6<5>, 7, 8. The residue flows by pipes d. c, e<2> to the elements E, F in succession. The elements E, F consist of boilers fitted with a froth-preventer and provided with heaters E<1>, F<1>. The heater F<1> is heated by steam, and the heater E' by vapours led from the element F by a pipe f. The fraction condensing in the heater E<1> is led away by a p pe 9<4>, and the uncondensed vapours are led by a pipe 9<5> to a cooler M. The vapours generated in the element E are led by, a pipe K to the column D to mix with those generated from the petroleum entering by the pipe d. The testing-devices of the apparatus D, E, F communicate with a vessel X which is evacuated by a pump Y which compresses the vapours inio a coil in a cooler L. Another coil in the coo'er L receives the vaselinous residue coming from the element F by a pipe f<1>.