关键字：STEAM CONDENSING FLOW; NATURAL-GAS; CARBON-DIOXIDE; WATER-VAPOR; GROWTH; EXPRESSION; PRESSURE; ENERGY

摘要：The presence of water vapor in natural gas can reduce the transportation efficiency and affect the safety production during the natural gas extraction process. The supersonic cyclone separator has become an emerging dehydration technology due to its simple structure and low energy consumption. The presence of solid particle in natural gas can cause heterogeneous condensation of water vapor in supersonic separators, thereby affecting water vapor separation, but the corresponding research is still limited. In this work, based on the condensation and deposition mechanisms as well as the surface diffusion mechanism of water vapor on particle surfaces, a heterogeneous condensation nucleation model was proposed to simulate the condensation flow inside the separator. The effects of inlet velocity, water vapor content and particle properties on water vapor condensation and separation efficiency were studied through numerical simulation and experimental methods. The results indicate that increasing the inlet velocity and water vapor content can increase the condensation range inside the separator and promote the condensation process for water vapor. In addition, the introduction of solid particles is beneficial for the condensation and separation of water vapor in the separator. At an inlet velocity of 11.86 m/s and water vapor content of 1.5 %, after the introduction of SiO2 particles, the simulated and experimental separation efficiencies reached 86.64 % and 83.31 %, respectively, which were 1.23 times and 1.28 times higher than that of the homogeneous condensation process of water vapor. Moreover, the close values of numerical simulation and experimental separation efficiency confirm that the proposed condensation model can accurately predict the condensation and separation processes of water vapor in separators. The results in this study will provide some guidance for the industrial application of supersonic cyclones in natural gas dehydration.

卷号：267

期号：-

是否译文：否