A5101907762- Cyclone Separators and Fluid Dynamics
- Granular flow and fluidized beds
- Aerosol Filtration and Electrostatic Precipitation
- Particle Dynamics in Fluid Flows
- Fluid Dynamics and Mixing
- Lattice Boltzmann Simulation Studies
- Innovative Microfluidic and Catalytic Techniques Innovation
- Oil and Gas Production Techniques
- Industrial Engineering and Technologies
- Fluid Dynamics and Heat Transfer
- Minerals Flotation and Separation Techniques
- Heat and Mass Transfer in Porous Media
- Mineral Processing and Grinding
- Iron and Steelmaking Processes
China University of Petroleum, Beijing
2010-2024
The helium tracer method is used to investigate the residence time distribution and flow patterns of feed spray in different fluid catalytic cracking injection schemes by cold model experiments. axial Peclet number upward downward oriented was obtained fitting into one-dimensional dispersion with an open–open boundary condition. Results suggest that pattern mixed stream closer complete mixing initial contact region catalysts when nozzles are mounted downward. A variation index β proposed...
The gas–solid separator of coupling cyclone with a built-in granular bed filter (GBF) was proposed to capture dust emitted from the industrial source. coarse separated by rotatory motion, and fine entrained swirl collected GBF. A new geometrical parameter, named as space ratio, introduced characterize mutual impacts on coupled separator. Experimental results showed that pressure drop decreased 10% when ratio increased 0.37 0.43, while collection efficiency enhanced significantly. large...
Moving bed filters are widely used in the field of high-temperature gas filtration. The property capturing particles is undoubtedly a crucial factor to determine performance moving granular filters. A large cold-mode experiment was carried out filter with co-current flow (MBGF-CF). characteristics pressure drop and collection efficiency were investigated for two types granules. experimental results show that express similar filtration under same operating conditions even if these different...
A compact dedust scheme coupling a cyclone with built-in circulating granular bed filter (C-CGBF) for continuous hot gas cleanup is introduced. The effects of the operation parameters including inlet dust concentrations, flow rates and granules circulation fluxes on separation performance C-CGBF are experimentally investigated using FCC catalyst particles in cold model setup. Experimental results reveal that stable/high collection efficiency, generally higher than 98%, achieved. real-time...
Effects of different gaseous nozzle injections on gas–solid dynamic mixing in FCC riser are experimentally studied by calculating the time fractions proposed phases (gas, diluter/denser dispersed particles, and cluster). Generally, a more particulate phase can be obtained when jets downward. By analyzing effects operating parameters, it is shown that larger jet/prelift flow momentum ratio increases proportions gas cluster phases, proportion useful denser, decreases accordingly nozzles...
The gas flow pattern in the radial bed is simulated by porous and transport models combined with a 6-lump kinetic reaction model (C4 hydrocarbon catalytic pyrolysis), which are verified published experimental results. Aside from simulation method, axial dispersion behavior well explained introducing "common pressure pool" (CPP) "constant drop lines" (CPDL) methods. most severe occurs at turning point of (r – r1)/(r2 r1) = 0.62. However, can still be roughly seen as plug whole for small...