Structure Design Of Supersonic Swirling Separator And Research Of Flowfield Character

The supersonic swirling separator is a revolutionary new natural gas processing technology. The separator has thermodynamics similar to a turbo-expander, combining thermal insulation expansion, low temperature condensation, swirling separation and re-compression in a compact tubular device. It has no moving parts, and the need for associated regeneration systems is eliminated. So the new technology can cut capital and operating expenditures effectively.In this paper, based on the original study both at home and abroad, a new type of supersonic swirling separater was designed Under the principles of first expansion and then swirling,whose Swirl component use wedge-shaped body and swirling leaves.What's more,the swirler is placed at the condensation section of nozzle,so the separater can obtain better cyclone effects and raise the efficiency greatly.The swirler is the key part of the separator.According to the design requirements of swirler,the structure of swirler was a wedge with several swirling vanes.By numerical simulation,its optimum structural parameters was determined as follows: E186 phylliform preferred as swirling vanes, the swirling vanes installed by the angle of 40 to 42 degrees and twisted by 30 degrees,the location for the installation of 94 to 96mm,the number of 12, and the wedge curvature of 1:4.Besides,subsonic convergent section of Laval nozzle is designed according to double cubic curve method, throat is designed as a smooth circular arc, and supersonic divergent section is designed on the basis of arc transition,linear portion and Foelsch method. The stream from this type of nozzle has preferable uniformity of velocity, less energy loss.And the diffusion section is designed according to conical contour.At the last part of the article, the new hydrocyclone supersonic flow characteristics, total pressure loss, step-up ratio, the scope of the export and import of pressure, and flow self-adaptive scope is simulated.the simulation compares the other two methods of foreign and shows that the supersonic swirling separater designed in this paper is able to obtain better results about swirling and expansion effectivenesses.