Concentrating evaporators – Processes
Patent
1982-09-07
1985-04-16
Garris, Bradley
Concentrating evaporators
Processes
159DIG4, B01D 108, B01D 110
Patent
active
045114323
ABSTRACT:
An improved upflow vertical tube evaporator is characterized by providing a distributor plate located within a certain critical distance or gap of the tube inlets in order to dampen cross flow between the tubes. The critical gap for providing stable operation is disclosed as lying between 0.01 and 0.2 of the average tube diameter. In the preferred embodiment, the distributor plate is capable of being translated relative to tube inlets so that the gap may be widened beyond the critical dimension during periods of stable flow in order to decrease the tube-side pressure drop and increase the heat transfer.
REFERENCES:
patent: 3400754 (1968-09-01), Barbu et al.
patent: 3423294 (1969-01-01), Sephton
patent: 3457982 (1969-07-01), Sephton
patent: 3846254 (1974-11-01), Sephton
patent: 4017355 (1977-04-01), Kiyota et al.
Sephton; "Interface Enhancement for Vertical Tube Evaporation of Seawater"; 4th Internat'l Sym. on Fresh Water from the Sea; vol. 1; pp. 471-480; 1973.
Sephton; "Renovation of Power Plant Cooling Tower Blowdown . . . "; EPA-600/777-063; Jun. 1977; pp. 12-17.
Sephton; "Upflow Vertical Tube Evaporation of Sea Water . . . "; Desalination; 16; pp. 1-13; 1975.
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