Particulate Solid Research, Inc PSRI

4201 West 36th Street

Building A

Chicago, IL 60632

United States

Phone: +1.1773.523-7227

Fax: +1.773.299-1464

www.psri.org

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Hall 2 / 2-623

Products of Particulate Solid Research, Inc PSRI (3)

Exhibitor Profile

Products (3)

Floor Plan

Particulate Solid Research Inc. (PSRI) is an international consortium of companies focused on the advancement of technology in the multiphase flows with granular and granular-fluid systems. Since 1971, PSRI has amassed a prolific amount of design data, technology, know-how, design criteria and models on all aspects of slurries, liquid injection, fluidization, entrainment, pneumatic conveying, attrition, erosion, distributor design, standpipes, solids transfer, and circulating fluidized beds. From the data produced, PSRI has developed design correlations, models, procedures, methods and techniques which are among the best and most useful in the field.

Fluidized Catalytic Cracking (FCC)

Conducted innovative research on a vortex stabilizer in a secondary cyclone to explain why it is more effective than other configurations (dust hopper, long cone, long barrel) in mitigating secondary cyclone cone erosion
Developed a design procedure for vortex stabilizers
Conducted tests on trickle valves and counter-weighted flapper valves to explain why secondary cyclone efficiencies can be so low
Found that immersing trickle valves and counter-weighted flapper valves shallowly into the tip of the fluidized bed can prevent excessive gas flow up the secondary cyclone dipleg and prevent catalyst losses
Developed an effective third-stage separator (TSS) for a member company that led to the successful implementation of the TSS into several commercial plants
Conducted extensive testing on bypassing to determine why it occurs, what parameters influence it and how it can be mitigated
Demonstrated how the gas bypassing in the fluidized bed could result in poor performance of primary cyclone dipleg leading to flooding
PSRI has been a leader in studying and optimizing standpipe operation/standpipe entrance configurations and aeration amount and location
PSRI has developed correlations to determine the optimum amount of aeration to add to a standpipe
Developed a bypass line (called a burp tube) for hybrid-angled standpipes to allow gas collecting at an elbow to be bypassed from the elbow into the freeboard of the fluidized bed above it
PSRI has been one of the first to characterize the radial gas and solids distribution in risers
Improved the design of the transition between a mixing pot and the riser above it
Studied different riser exit configurations with respect to erosion, pressure drop and how much attrition is produced at each configuration
Developed design procedures for gas distributors
Studied and evaluated several close-coupled cyclone designs