Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – With regeneration – reclamation – reuse – recycling or...
Patent
1987-01-30
1988-08-02
Alvo, Steve
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
With regeneration, reclamation, reuse, recycling or...
162 3011, 110189, 422185, 423DIG3, 432 4, D21C 1112
Patent
active
047612045
ABSTRACT:
An improvement in a chemical recovery process in which a hot liquid smelt is introduced into a dissolving tank containing a pool of green liquor. The improvement comprises preventing smelt explosions in the dissolving tank by maintaining a first selected superatmospheric pressure in the tank during normal operation of the furnace; sensing the pressure in the tank; and further impinging a high velocity stream of steam upon the stream of smelt whenever the pressure in the tank decreases below a second selected superatmospheric pressure which is lower than said first pressure.
REFERENCES:
patent: 2967758 (1961-01-01), Thorson
patent: 3122421 (1964-02-01), Gettle
patent: 4017254 (1977-04-01), Jones
patent: 4312702 (1982-01-01), Tomlinson, II
Kohl Arthur L.
Stewart Albert E.
Alvo Steve
DeLarvin Clark E.
Field Harry B.
Hamann H. Fredrick
Rockwell International Corporation
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