A Model for Collisional Exchange in Gas/Liquid/Solid Fluidized Beds
A new model is presented by O’Rourke, Zhao, and Snider for numerical simulations of collisional transfer of mass, momentum and energy in gas/liquid/solid fluidized beds.
Pressure and Temperature Effects in Fluid-Particle Systems
Most investigations of fluidization parameters take place at ambi- ent temperature and pressure. Yet, nearly all processes operate at elevated temperature, and many at elevated pressure.
CPFD Announces Virtually Unlimited Overflow Simulation Capacity Through Metered Licensing
CPFD Software announces Barracuda Virtual Reactor’s new metered licensing with new features where clients can now run multiple Barracuda cases at once regardless of the number of base licenses available.
Gas Distributor and Plenum Design in Fluidized Beds
The gas distributor (also called a grid) in a fluidized bed reactor is intended to induce a uniform and stable fluidization across the entire bed
cross-section, operate for long periods (years) without plugging or breaking, minimize weepage of solids into the plenum beneath the grid, minimize attrition of the bed material, and support the weight of the bed material during start-up and shut-down.
CPFD Software Exhibiting at 2022 AFPM Summit
At the 2022 AFPM Summit in San Antonio, CPFD Software will be exhibiting how Barracuda Virtual Reactor has become the standard tool for increasing the reliability and performance of FCCUs, and the latest developments for vapor/liquid/solid systems such as ebullated bed in Texas on October 18-20, 2022.
Virtual Experimentation Through 3D Full-Loop Simulation of a Circulating Fluidized Bed
Eulerian granular multiphase model with a drag coefficient correction based on the energy-minimization multi-scale (EMMS) model was used to simulate a semi-industry scale circulating fluidized bed (CFB).
Measuring Particle Attrition in a Jet Cup
Particle attrition is usually a detriment to product quality and process cost. This paper discusses the development of a jet cup device that allows all of the sample particles to experience similar amounts of solids stresses.
CPFD and Encina Finalists for Hydrocarbon Processing Sustainability Award
CPFD Software’s joint entry with Encina Development Group, entitled “Plastic Fluid Catalytic Cracking (PFCC) Accelerated by Virtual Reactor Simulation” is a finalist for the 2022 Sustainability Award and received this recognition for a second consecutive year for changing landscapes and providing innovative solution in reducing plastic waste and recycling hard-to-recycle plastics into circular chemicals.
Effect of Baffles on Gas Bypassing In a 0.9-M-Diameter Unit
Various types of internals have traditionally been used to improve fluidization quality. Some recent studies have shown that under some conditions there can be severe gas mal-distribution of gas in deep fluidized beds of Geldart group A materials.
Emulsion Phase Density in Deep Fluidized Beds of Geldart Group A Material
Non-mechanical valves, especially the L-valves, have been used extensively in fluidized beds and circulating fluidized beds for solids recycling or to serve as a pressure seal. This paper presents a set of L-valve equations which relate the solids flow rate to the L-valve design, aeration rate, and pressure drop across the L-valve.