Patent GB-796393-A (GB)
Title: Improvements in or relating to a combination process for refining and reforming hydrocarbon oils
Inventor: GERHOLD CLARENCE GEORGE
IPC: C10G59/02
Filed: 1956-12-03
Abstract: <PICT:0796393/IV (b)/1> Gasoline-containing hydrocarbon oils are hydrofined prior to hydro-forming, the hydrofined product being stripped prior to hydroforming with a hydrogen-rich gas obtained from the subsequent hydro-forming process.  In a preferred embodiment the hydrocarbon oil, which may be a gasoline or gasoline fraction obtained by the distillation of crude oils, the fractionation of natural gases or the cracking of heavy hydrocarbon oils, is pumped by line 1, mixed with recycle hydrogen-containing gas from line 13, heated and passed through the refining zone 7 where it is contacted with a hydrogenating catalyst such as nickel, platinum, cobalt, molybdenum or palladium, their oxides or sulphides, or mixtures thereof, alone or supported on silica, alumina, magnesia, zirconia or thoria, at 235-485 DEG  C. and 5-65 atmospheres pressure.  In this zone the sulphur and nitrogen contents of the contaminants are converted to hydrogen sulphide and ammonia.  The product is passed to an intermediate stage of the separating zone 8 which is fed at the bottom by line 19 with hydrogen-rich gas obtained as described later. Gaseous effluent leaves the separator by line 9, is cooled to condense normally liquid constituents and enters the receiver 11 where liquid is separated and returned to the zone 8 and gas is removed in whole or part by line 14 or recycled by line 32.  Stripped and refined oil leaves the zone 8 at the bottom by line 18, is heated and mixed with recycle hydrogen-rich gas from line 27 before passing to the reforming zone 22 where it is contacted with a platinum-alumina catalyst, preferably containing combined halogen, at 430-540 DEG  C. and 20-60 atmospheres pressure.  The reformed effluent is cooled and separated into normally gaseous and normally liquid components in the separator 24.  Liquid product leaves by line 25 and hydrogen-rich gas by line 26 to be recycled to the separating zone 8 and the reforming zone 22 through line 27 and, if necessary to the refining process through line 29.  If desired, heat may be supplied to zone 8 by means of the heating coil 17, for example by using the effluent from the refining zone 7 prior to its entering the zone 8.  The separating zone 8 is preferably operated at a pressure equal to the lower one of the pressures in zone 7 or separator 24.ALSO:Gasoline-containing hydrocarbon oils are hydrofined prior to hydro-forming, the hydrofined product being stripped prior to hydroforming with a hydrogen-rich gas obtained from the subsequent hydro-forming process.  In a preferred embodiment the hydrocarbon oil, which may be a gasoline or gasoline fraction obtained by the distillation of crude oils, the fractionation of natural gases or the cracking of heavy hydrocarbon oils, is pumped by line 1, mixed with recycle hydrogen-containing gas from line 13, heated and passed through the refining zone 7 where it is contacted with a hydrogenating catalyst such as nickel, platinum, cobalt, molybdenum or palladium, their oxides or sulphides, or mixtures thereof, alone or supported on silica, alumina, magnesia, <PICT:0796393/III/1> zirconia or thoria, at 235-485 DEG  C. and 5-65 atmospheres pressure. In this zone the sulphur and nitrogen contents of the contaminants are converted to hydrogen sulphide and ammonia.  The product is passed to an intermediate stage of the separating zone 8 which is fed at the bottom by line 19 with hydrogen-rich gas obtained as described later.  Gaseous effluent leaves the separator by line 9, is cooled to condense normally liquid constituents and enters the receiver 11 where liquid is separated and returned to the zone 8 and gas is removed in whole or part by line 14 or recycled by line 32.  Stripped and refined oil leaves the zone 8 at the bottom by line 18, is heated and mixed with recycle hydrogen-rich gas from line 27 before passing to the reforming zone 22 where it is contacted with a platinum-alumina catalyst, preferably containing combined halogen, at 430-540 DEG  C. and 20-60 atmospheres pressure.  The reformed effluent is cooled and separated into normally gaseous and normally liquid components in the separator 24.  Liquid product leaves by line 25 and hydrogen-rich gas by line 26 to be recycled to the separating zone 8 and the reforming zone 22 through line 27 and if necessary to the refining process through line 29.  If desired, heat may be supplied to zone 8 by means of the heating coil 17, for example by using the effluent from the refining zone 7 prior to its entering the zone 8.  The separating zone 8 is preferably operated at a pressure equal to the lower one of the pressures in zone 7 or separator 24.