Possibility of Vortex Separation Ejector Application in the Collection and Separation of Gas

Abstract

The article analyzes the experimental and pilot ejector installations and shows shortcomings in their work with two-phase flows. Association of high and low pressure gas flows with a conventional choke device leads to a significant loss of flow energy of high pressure gas. This union of gas flows of high and low pressures, also limits the selection of gas from wells with low wellhead pressure and the combined gas stream in this case becomes a low-pressure, so transporting it over long distances becomes impossible. Thus, new design of the vortex and separation ejector for the improvement of technological processes is proposed. Its design and principle of operation are described. The proposed ejector consists of a feed chamber with a tangential inlet of the passive flow, and a tangential exit of the liquid phase, mixing chamber and diffuser. The possibility of implementing it at the same time in the ejection and low-temperature gas separation processes were considered. The advantages of the ejector are shown. Due to the cold created by very low temperature in the proposed vortex ejector it is possible to carry out the process of static low-temperature gas separation simultaneously with the process of ejection. The use of this small-sized ejector instead of compressor installations on limited areas of offshore platforms, bushes and flyovers is especially expedient and advantageous. The vortex ejector is simple in design and can be made out of the factory by forces of the manufacturers themselves from tube elements.