Chemical apparatus and process disinfecting – deodorizing – preser – Control element responsive to a sensed operating condition – Control element responds proportionally to a variable signal...
Patent
1993-06-03
1995-02-14
Warden, Robert J.
Chemical apparatus and process disinfecting, deodorizing, preser
Control element responsive to a sensed operating condition
Control element responds proportionally to a variable signal...
208134, 422111, 422197, 585501, 585660, B01J 806, C07C 5333, G05D 2300
Patent
active
053893425
ABSTRACT:
In an endothermic steam active catalytic process employing a fixed catalyst bed in a fuel fired reactor for the dehydrogenation of alkanes to alkenes, wherein a reaction temperature above about 500.degree. C. (932.degree. F.) is maintained for commercially feasible conversions, and wherein catalyst activity declines during a production period, apparatus for control of a process temperature so as to compensate for catalyst activity decline includes a temperature sensor mounted in the reaction effluent stream in combination with a temperature controller which automatically adjusts the quantity of fuel supplied to the fired reactor.
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C. A. Smith et al., Princ. & Pract. of Automatic Process Control, 1985, pp. 176-178 & 465.
Bridges Steven D.
Brinkmeyer Francis M.
Savage Kelly B.
Bogatie George E.
Crawford L. M.
Pillips Petroleum Company
Warden Robert J.
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