| 摘要 |
PCT No. PCT/SE87/00535 Sec. 371 Date Mar. 15, 1989 Sec. 102(e) Date Mar. 15, 1989 PCT Filed Nov. 16, 1987 PCT Pub. No. WO88/03984 PCT Pub. Date Jun. 2, 1988.In connection with reduction of the pressure of newly produced oil, i.e. a mixture of hydrocarbon compounds, this conventionally is performed stepwise, a momentary pressure drop occurring at each stage. According to the invention it is suggested that oil is caused to flow radially inward in a chamber (12), which is formed by a rotating vessel (1) and which is only partly filled with rotating oil, whereby the pressure drop in the oil can occur relatively slowly. A free liquid surface is maintained in the chamber (12), and a certain gas pressure is maintained in the liquid free part thereof, while evaporated hydrocarbon compounds are removed through a central gas outlet (18). By means of a special inlet device (14; 3a, 40) it is prevented that the pressure in the oil, when it is on its way through the channel (15; 41) radially outward in the vessel (1) to the level, from which it is to flow radially inward, increases in the way that would happen if the oil would be allowed to flow freely in the channel and simultaneously be completely entrained in the rotation of the vessel. |
