Method of and a device for a continuous conditioning of sludges

Details Method of and a device for a continuous conditioning of sludges Method of and a device for a continuous conditioning of sludges

1979-06-14

1981-04-14

Wyse, Thomas G.

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210739, 210 961, 210180, 210149, C02F 1118

Patent

active

042618363

ABSTRACT:
The method of and a device for conditioning sludges, especially sewage sludges at an increased pressure and at an increased temperature wherein the raw sludge is fed by means of high-pressure pumps through a plurality of heat exchanging stations until it is brought in the last station to a pressure which is sufficient for the conditioning. Thereupon the conditioned sludge is returned through the same stations and in each station is pressure released and cooled. Steam released due to the cooling is brought in contact with the incoming raw sludge and warms up the same to a saturation temperature. To insure optimum heat exchange, each station is provided with means for measuring the concentration of gas components admixed to the steam and the discharge of the gaseous mixture from the station is controlled in response to the measured concentration value.

REFERENCES:
patent: 3219579 (1965-11-01), Kranz
patent: 3464917 (1969-09-01), Porteous
patent: 3661778 (1972-05-01), Prodt
patent: 3804755 (1974-04-01), Cervantes
patent: 3986955 (1976-10-01), Plicque
patent: 4013560 (1977-03-01), Prodt
patent: 4100730 (1978-07-01), Prodt

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