Mixing and heat transfer apparatus

Details Mixing and heat transfer apparatus Mixing and heat transfer apparatus

1973-11-16

1976-01-27

Roberts, Edward L.

Heat exchange

With valve or movable deflector for heat exchange fluid flow

With by-pass of heat exchanger or heat exchanger section

165 87, 165 94, 165109, 165142, 165169, 259 96, 259DIG18, B01F 516, B01F 1506

Patent

active

039348571

ABSTRACT:
An improved apparatus for mixing and reacting materials that include at least one liquid while simultaneously transferring heat to or from the mixture. A rotating centrifugal impeller mounted in a lower chamber of a closed reactor vessel draws the materials to be mixed from an upper chamber through a short central inlet and mixes them with high energy while impelling them between spaced blades extending outward from the eye of the impeller to a high pressure region at its circumference. The mixture then returns to the upper chamber through a plurality of elongated conduits having thin walls. For maximum heat transfer area in relation to cross-sectional flow area, each conduit is arranged with a first inner portion of annular cross section and a second, reverse flow, outer portion separated from the inner portion by a double-walled tube, the tube having passages between its double walls for circulating heat exchanging fluid.

REFERENCES:
patent: 1560826 (1925-11-01), Kirschbraum
patent: 2071393 (1937-02-01), Doherty
patent: 2102548 (1937-12-01), Stratford

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