Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Fluidized bed
Patent
1985-11-04
1989-02-28
Richman, Barry S.
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Fluidized bed
422145, 422214, 136230, B01J 818
Patent
active
048083836
ABSTRACT:
A method and apparatus for feeding catalyst, oil and steam into a fluid catalytic cracking (FCC) riser. Oil passes through respective oil lines into a multiplicity of upwardly extending nozzles located at a lower portion of the riser, while steam passes through respective steam lines into the nozzles where it blends with the oil, with the combined oil and steam mixture being fed through the nozzles into the riser. Each oil line and steam line is provided with a valve to separately control oil and steam flow rates, respectively, in each of the nozzles to obtain a substantially constant catalyst to oil ratio across a horizontal cross-section of the riser. The substantially constant catalyst to oil ratio is represented by a substantially isothermal temperature profile across the horizontal riser cross-section, which is detected by measuring the temperature at various points along the horizontal cross-section. The oil and stem flow rates are adjusted by means of the valves until the isothermal temperature profile is achieved.
REFERENCES:
patent: 2629653 (1953-02-01), Barr
patent: 3152065 (1964-10-01), Sharp et al.
patent: 4028139 (1977-06-01), Smith et al.
patent: 4532026 (1985-07-01), Fries
patent: 4640463 (1987-02-01), Krambeck et al.
Buyan Frank M.
Ross Mark S.
Gilman Michael G.
Keen Malcolm D.
McKillop Alexander J.
McMahon Timothy M.
Mobil Oil Corporation
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