A scale-up strategy for low-temperature methanol synthesis in a circulating slurry bubble reactor

Multiple effects of operating variables on the bubble properties in three-phase slurry bubble columns

“…For the commercial design or scale-up of the slurry bubble column reactor, an understanding of the flow behavior of bubbles with increasing column diameter is essential, because the similarity of bubble properties should be adjusted with increasing column diameter. It has been generally understood that in dynamic flow systems such as slurry bubble column reactors, the hydrodynamic stability and similarity have to be controlled and adjusted to provide the heterogeneous reactants with plausible conditions for effective contacting and reaction [9][10][11][12][13].…”

The effect of gas‐liquid counter‐current operation on gas hold‐up in bubble columns using electrical resistance tomography

“…D column diameter (m) H vertical distance above the sparger (m) j drift flux (m s −1 ) u g gas superficial velocity (m s −1 ) u l liquid velocity (cm s −1 ) Greek Letters ε g gas hold-up ε l liquid hold-up σ 1 conductivity of the first phase (mS cm −1 ) σ 2 conductivity of the second phase (mS cm −1 ) σ mc local mixture conductivity (mS cm −1 )…”

2D and 3D Simulations of Fluid Dynamics in the Bubble Reactor for Liquid Fuel Synthesis: Comparisons Against Experiments

“…Flow pattern, bubble size distribution, and gas holdup are fundamental characteristic parameters for predicting heat, mass, and momentum transfers as well as chemical reaction in the slurry bubble columns. Therefore, to design and scale up an efficient slurry bubble reactor for liquid fuel synthesis, a better understanding of the hydrodynamics is required (Krishna et al, 1996;Safoniuk et al, 1999;Zhang and Zhao, 2006). With the rapid development of numerical method and computational power, the numerical simulation becomes a promising tool to predict the fluid dynamics and heat and mass transfer in multiphase flows.…”

“…Slurry bubble reactor has become a promising tool in comparison with the traditional tubular fixed-bed reactor for converting coal or natural gas into high quality liquid fuels, such as hydrocarbons through Fischer-Tropsch process (Wang et al, 2008b) and methanol or dimethyl ether in the liquid-phase medium (Tijm et al, 2001;Zhang et al, 2003;Chen et al, 2006;Zhang and Zhao, 2006;Wang et al, 2008a). This is largely because the slurry bubble column has advantages of good heat and mass transfer characteristics, no moving parts, high catalyst durability, simple operation, low running and maintaining costs, and on-line catalyst addition and withdrawal (Fan, 1989;Wang et al, 2007).…”