Chemical apparatus and process disinfecting – deodorizing – preser – Control element responsive to a sensed operating condition – Control element is a binary responsive valve
Patent
1977-07-08
1979-12-04
Marcus, Michael S.
Chemical apparatus and process disinfecting, deodorizing, preser
Control element responsive to a sensed operating condition
Control element is a binary responsive valve
422134, 422138, 422202, 422234, 422109, B01J 304
Patent
active
041772407
ABSTRACT:
The present invention concerns a reactor of the tubular type, with a high heat exchange, for the catalytic production under high pressure of alpha-olefine polymers and copolymers, in particular polymers and copolymers of ethylene.
More particularly, the tubular reactor of this invention consists of three coaxially arranged tubes, distanced from each other in such a way as to create between the outer tube and the intermediate an annular interspace suited for the circulation of the refrigerating fluid and between the intermediate tube, sized for very high pressures, and the innermost tube an interspace that will form the exothermic reaction zone proper, said innermost tube being of the low-pressure type and forming the preheating zone of the process fluid, fed in under pressure from the outside by the action of the reaction heat that develops inside said intermediate tube, said preheating zone extending up to over half the length of the reactor and, at the end of it, defining the reaction starting zone that is the feeding zone of the catalyst or the like, means for the control of the temperature in said reaction starting zone through the immission of fresh process fluid into the reaction starting zone itself, said process fluid having been drawn from the inlet of the reactor or, by the recycling, into the inlet of the reactor, of process fluid drawn from the end of the preheating zone and refrigerated, as well as means for balancing the pressures between said reaction zone and said preheating zone.
REFERENCES:
patent: 1812341 (1931-06-01), Jaeger
patent: 1826548 (1931-10-01), Jaeger
patent: 2363738 (1944-11-01), Mather et al.
patent: 2769804 (1956-11-01), Hanson
patent: 3305600 (1967-02-01), Hopper et al.
patent: 3458467 (1969-07-01), Herrle et al.
patent: 3492047 (1970-01-01), Moles et al.
Marcus Michael S.
Montedison S.p.A.
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