Actions for Phenomenological modeling of reaction experiments in risers. Final report

Email RIS file
Bookmark
Report an Issue

Phenomenological modeling of reaction experiments in risers. Final report

Author
Bierl, T. W.
Published
United States : [publisher not identified], 1982
Springfield, Va.: National Technical Information Service, [approximately 1982]
Physical Description
microfiche : negative ; 11 x 15 cm
Additional Creators
Gajdos, L. J.

Availability

Browse Nearby on Shelf
I Want It
I Want It

Finding items...

Summary
Fluid mechanics and reaction efficiencies were measured in three- and six-inch diameter risers, operating at 8 to 20 ft/sec, with both Davison FCC and Engelhard HFZ-20 microspheroidal cracking catalysts used as a recirculating solid. The fluid mechanical measurements indicated that pressure gradient (bed density) was proportional to the average solid mass velocity at any given gas velocity and increased marginally with riser diameter. Supplemental data show that the other components of pressure drop in the recirculating system (bottom and overhead U-bends and restricton orifice) were well-correlated by an appropriate discharge coeefficient - suggesting that solid flux may be inferred accurately from the pressure drop across the restriction orifice. Internal momentum profiles were found to vary linearly with the square of the radius. Ozone decomposition over Davison FCC catalyst in the riser was used to measure riser performance as a chemical reactor. The riser exhibited an advantageous (in terms of ozone decomposition) entrance region followed by a region that was well-described by a segregated flow reactor model.
Report Numbers
DE82008670; DOE/MC/14249-1149
Other Subject(s)
Collection
NTIS collection.
Note
DOE contract number: AC21-80MC14249
OSTI Identifier 5416936
Research organization: Environmental Research and Technology, Inc., Concord, MA (USA).
View MARC record | catkey: 47327742