Liquid purification or separation – Processes – Separating
Patent
1992-06-15
1993-04-06
Drodge, Joseph W.
Liquid purification or separation
Processes
Separating
34 12, 34 14, 34 33, 101491, 106 20A, 210769, 210771, 210774, 210806, 210808, B01D 114, B41F 3120
Patent
active
052000940
ABSTRACT:
A method for recovery of printing ink wastes is provided which greatly minimizes pollution problems attendant to the disposal of ink wastes, while permitting formulation of usable ink products from the wastes. The method involves first creating a flowable stream of material including the ink wastes, and directing this stream to a hydroheater (16) along with incoming steam. In the hydroheater (16), the ink wastes are subjected to elevated temperatures and pressures, and intense shear, creating a homogeneous, flowable output. This output may then be dried and powdered, and the powder may be reconstituted as a black ink suitable for commercial printing operations. If desired, the hydroheater (16) output may be treated in a filter press (252) to obtain a filter cake (258), and this cake (258) may be subsequently subdivided and treated with ink carriers to form a processing ink.
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Cain Donald D.
Cain Michael D.
Hill Alan M.
Drodge Joseph W.
Lawrence Paper Company
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