Method of flashing black liquor

Details Method of flashing black liquor Method of flashing black liquor

1984-03-22

1985-11-05

Smith, William F.

Concentrating evaporators

Processes

Involving waste liquid

159 21, 159DIG4, 159DIG22, 159 482, 162 29, B01D 116

Patent

active

045511985

ABSTRACT:
A flash tank, and method of flashing steam utilizing the tank, result in minimum foam generation so that the outlet steam remains uncontaminated. Feed fluid fed into the interior of the tank is positively prevented from splashing into the liquid seal provided adjacent the liquid outlet from the tank. This may be done by directing the feed fluid upwardly when introduced into the tank, and providing a liquid holding tank externally of the flash tank, feed fluid impacting upon a deflecting member and then the conically downwardly tapering walls of a bottom portion of the tank. Another alternative is to feed the feed fluid downwardly into the tank to impact upon a conical deflecting member so that there is minimum loss of momentum of the feed fluid, and again it impacts upon the conically tapering walls of the tank bottom portion.

REFERENCES:
patent: 1438502 (1922-12-01), Peebles
patent: 2044095 (1936-06-01), Moore
patent: 3057786 (1962-10-01), Waddill
patent: 3073380 (1963-01-01), Palmason
patent: 3362868 (1968-01-01), Backlund
patent: 3414038 (1968-12-01), Laakso
Chemical Processing, "Evaporative Recovery System Slashes Fuel Costs"; Tucker et al.; Jun. 1983, pp. 94-97.

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