The effect of swirling shear blade on gas-liquid flow pattern and mass transfer performance in Venturi injector

[Display omitted] •A novel swirl Venturi injector (SVI) was proposed.•The swirling shear blades significantly expanded the range of the mist flow.•The swirl shear blades delayed the transition from mist flow to stratified flow.•Compared to ordinary injector, the αE of SVI can reach up to 43 %.•The swirl shear blades can enable the maximum αA of SVI to reach 29 %. To address the challenge of low mass transfer efficiency of gas-liquid reaction in traditional reactors, this study proposes a new method to improve the gas-liquid mass transfer efficiency by integrating swirl shear blades (SSB) into Venturi injectors. The gas-liquid flow patterns in the mixing and diffusion sections between the Swirl Venturi Injector (SVI) and the Traditional Venturi Injector (TVI) was compared, and it was found that the SSB significantly reduced the proportion of annular flow while increased the proportion of mist flow. The enhancement factor αE and the acceleration factor αA are applied to evaluate the mass transfer performance. Compared to TVI, the maximum αA of SVI was 29%, and the maximum αE was 43%. This work shows great potential in efficiently capturing gas components with low solubility in the liquid phase, thereby helping to achieve the goal of green chemical engineering.