Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1977-03-22
1978-06-27
Sever, Frank
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
34 9, 34 15, 159 1RW, 159DIG33, 203DIG5, 208 13, 208145, 210 59, 210 68, 210 71, 210 74, 210 78, B01D 1200
Patent
active
040973786
ABSTRACT:
Water containing combustible sludges are dried with the multiple effect use of the heat required by adding recycled cool high boiling oil and heating the mixture by direct contact with steam produced as later described. Then the oil sludge mixture has water separated off which is possible, since water has been added by the direct condensation of steam in the heating of the mixture plus any extra original water in the sludge that can be removed by a centrifuge. The mixture is heated again by adding hot oil and then the mixture has water evaporated off by reducing the pressure. This steam produced is used for the direct steam heating mentioned above. Then water vapor is evaporated off again by reducing the pressure again and this water vapor is condensed by a water cooled condenser. In this way water vapor is evaporated off with the double use of heat. By indirect heat exchange of separated warm water with oil plus dried solids being heated sensible heat losses are kept small.
REFERENCES:
patent: 3304991 (1967-02-01), Greenfield
patent: 3855079 (1974-12-01), Greenfield et al.
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