LIU Ni, DAI Haifeng, YU Hongyi, et al. Flow properties of CO2 hydrate slurry in circular tube[J]. CIESC Journal, 2014, (2): 550-554. DOI: 10.3969/j.issn.0438-1157.2014.02.026.
LIU Ni, DAI Haifeng, YU Hongyi, et al. Flow properties of CO2 hydrate slurry in circular tube[J]. CIESC Journal, 2014, (2): 550-554. DOI: 10.3969/j.issn.0438-1157.2014.02.026.DOI:
An experimental setup was established to produce CO2 hydrate slurry by cooling after CO2 injection in precooled water. The flow characteristics of CO2 hydrate slurry with 8.2%—23.1%(vol) in a 8 mm straight stainless steel circular tube were studied in a dynamic loop. The pressure drops of CO2 hydrate slurry were measured and it increased with the increase of flow rate. The flow of CO2 hydrate slurry presente non-Newtonian behavior. At flow rate v < 0.60 m·s-1
behavior index n < 1 and decreased with the increase of solid fraction. CO2 hydrate slurry behaved as a Herschel-Bulkley fluid. Apparent viscosity decreased with the increase of shear rate
showing shear-thinning characteristics. Apparent viscosity of CO2 hydrate slurry was from 8.5 mPa·s to 10.6 mPa·s at shearing rate of 600 s-1. The rheological parameters and equations were determined
providing the guide for the research of CO2 hydrate slurry flow properties and its application.