Measuring and testing – Gas analysis – Moisture content or vapor pressure
Patent
1973-03-15
1976-02-17
Queisser, Richard C.
Measuring and testing
Gas analysis
Moisture content or vapor pressure
23230A, 23288B, 73340, 733628, 250334, 250342, 252416, 315 12R, G01J 508, B01J 3708, G01N 2548
Patent
active
039383865
ABSTRACT:
Careful and accurate indication of regeneration temperatures of catalysts associated with the refining of hydrocarbons such as occurring in catalyst-aided hydrocracking and catalyst-aided reforming processes--in real time--occurs by monitoring--from an overflying aircraft--the infrared energy, say in a frequency range greater than 300 .times. 10.sup.9 but not more than 10.sup.15 Hertz, emitted from a plurality of distributed metallic studs mounted as by welding to the exterior surface of the sidewall of a vessel undergoing catalytic regeneration. The dynamic temperature variation of such energy rays readily indicates regeneration temperatures of the catalyst interior of the vessel. The studs extend through the insulation of the vessel but do not penetrate its interior. Where the regeneration process is cyclically occurring, not only is there a marked decrease in the time required for regeneration, but there is also better statistical certainty that full regeneration of the catalyst has occurred. Further, by mounting the infrared scanning and detection unit aboard a continuously moving aircraft flying a constant elevational, circular path over the vessel, the temperature of catalyst interior of the vessel over the full 360-degree circumference of the vessel can be quickly and accurately determined.
Such scanning and detection unit preferably includes novel enhancement circuitry for restoring the infrared energy signals after detection, say under operating conditions concomitant with atmospheric degradation ("clutter") or image blur of the emitted infrared signals.
REFERENCES:
patent: 2022440 (1935-11-01), Slough
patent: 2437173 (1948-03-01), Rutherford
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patent: 3191035 (1965-06-01), Brumfield et al.
patent: 3430045 (1969-02-01), Bjork et al.
patent: 3752914 (1973-08-01), England et al.
patent: 3752915 (1973-08-01), Parker et al.
patent: 3821895 (1974-07-01), Sumikawa et al.
Comfort Armand C.
Messner Harold D.
Chevron Research Company
Freeland, Jr. R. L.
Messner H. D.
Queisser Richard C.
Shoon Frederick
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