Research And Development Of Supersonic Separator With Inner Pyramid And Research On Condensing Flow

Exploitation of natural gas from strata generally contain a certain amount of water, hydrogen sulfide and carbon dioxide and other impurities,the presence of water will give natural gas transmission and processing difficult. Supersonic separation technology is a supersonic flow conditions using the low temperature condensation effect of gas combine with hydrocyclone separation technology in multi-component gas condensate freezing point higher separation of components of mixed gas separation technology,and the difference between traditional natural gas dehydration and the supersonic separation technology is that the supersonic gas separation technology is capable of starting their own pressure, without electricity and other external energy start-up.compact, no moving parts, maintenance-free. can achieve unattended operation, a significant reduction in operating costs.in the purification of natural gas and dehydrate mixture has a broad field.This article aim to improve the value of practical application of supersonic gas separator to achieve the target that enable it as a industrial production changes to a civilian production. mainly doing research in the supersonic separator for the gas flow behavior of rotating condensation,establish the three-dimension numerical model of supersonic swirling gas condense flow.by means of simulation to optimize the varies of structure parameters of the inner pyramid supersonic gas separator,design and manufacture a pre-swirling generator of a inner pyramid supersonic gas separator.Explored the effective strategy to improve the separating property of the supersonic gas cyclone separator,on the experimental methods,adopt the heterogeneous nucleation technology,by additional condense core to assist to increase the size of the condense droplets.Through the theoretical analysis,determine the condense core is a tiny inertia droplets that can intersolubility with the component of the condense gas.adopt the discrete phase model to study the atomization process for spraying the NaCl solution droplets or the water droplets in the medium of the wet stream in the device.Through the assembly language,to determine the critical diameter of the atomized droplets that sprayed into the device for the different diameter of the inner pyramid.For the structure design,with the principle of reducing the inlet pressure,design a cyclone separator of subsonic wind tunnel style.and through the three-dimensonal numerical simulation to describe the swirling gas condense flow.and analysis the results,provides the direction for the follow-up research. Establish the experimental platform of the supersonic cyclone separator to research the separating property of the inner pyramid supersonic gas separator.Experimental medium is wet steam.adopt three experimental methods,they were non-condensed core,inject tiny water droplets,and inject NaCl solution droplets.the inlet pressure is 0.17MPa.The results show that: when adopts non-condensed core method,the heavy constituent rejection and the dew point depression was 17.1% and 11.2K;when adopts the tiny water droplets as the condense nucleus, the heavy constituent rejection and the dew point depression was 28.2% and 15.4K;when adopts NaCl solution droplets as the condense nucleus, the heavy constituent rejection and the dew point depression was 31.7% and 16.6K;To achieve better separation.