Apparatus for removing mercury from solid waste material

Details Apparatus for removing mercury from solid waste material Apparatus for removing mercury from solid waste material

1979-07-17

1981-03-10

Andrews, M. J.

Metallurgical apparatus

With means treating or handling gases exhausted by treating...

By condensing and collecting a volatile constituent

202160, 202205, 203 2, C22B 904

Patent

active

042549434

ABSTRACT:
The invention provides apparatus and a process for removing mercury from solid waste material. The solid waste material is placed in a vacuum chamber. The chamber is heated above the vaporization temperature of mercury. A vacuum condition is formed and then, while the temperature is maintained above the vaporization temperature of mercury, an inert gas is placed in the vacuum chamber. During this heating period, the pressure in the vacuum chamber is periodically varied from a maximum to a minimum. The apparatus utilized is a vacuum chamber, a vacuum pump, and a pipe that contains a mercury condenser. The pipe also functions through a side inlet as a means for introducing the inert gas into the vacuum chamber, while the vacuum pump is closed off. A control unit for controlling the alternate periods of mercury vapor withdrawal and inert gas introduction into the vacuum chamber is provided.

REFERENCES:
patent: 2450098 (1948-09-01), Smith
patent: 3704875 (1972-12-01), Waltrich
patent: 4087276 (1978-05-01), Generini

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