Method and apparatus for controlling centrifugal thin film dryer

Details Method and apparatus for controlling centrifugal thin film dryer Method and apparatus for controlling centrifugal thin film dryer

1983-03-03

1989-10-10

Chin, Peter

Concentrating evaporators

Film type

Centrifugal

159 44, 159 49, B01D 122

Patent

active

048729485

ABSTRACT:
Disclosed is a control system for a centrifugal thin film dryer wherein a slurry including solid matter is fed to a tubular heating surface and the a slurry is heated while blades are rotating inside the heating tube so that the a slurry turns into dry powder, the system comprising a plurality of thermal sensors located on the heating surface, a dry-up point calculator which measures the temperature distribution along the heating surface in accordance with the signals provided by the thermal sensors and calculates the point at which the temperature rise begins to saturate, a flow rate setting device which calculates the quantity of a slurry to be supplied in accordance with the output of the dry-up point calculator, and a flow rate regulator which controls a pump in accordance with the signal provided by the flow rate setting device.

REFERENCES:
patent: 2857962 (1958-10-01), Rogers
patent: 3242971 (1966-03-01), Carter et al.
patent: 3542112 (1970-11-01), Monty
patent: 3977936 (1976-08-01), Murakami et al.
Perry's, Chemical Engineers' Handbook, 4th ed., (1963), pp. 15-33 to 15-44.

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