Device for withdrawing and/or ejecting a contaminating medium, w

Details Device for withdrawing and/or ejecting a contaminating medium, w Device for withdrawing and/or ejecting a contaminating medium, w

1996-02-13

1998-06-16

Tapoical, William E.

Furnaces

Process

Incinerating refuse

110250, 110236, 219635, F23G 500

Patent

active

057654905

ABSTRACT:
Process for heating a hollow needle (2) consisting essentially of a metal tube (3), the inside and/or outside of which have previously been brought into contact with a contaminating medium, according to which an electric current is supplied to the said needle, flowing in the metal wall and over the length of the said tube (3) and dissipating thermal energy therein through the ohmic effect, characterized in that a predetermined quantity of electrical energy is supplied to the said needle (2), metered as a function of the electrical characteristics of the said tube (3), on the one hand to suffice for decontamination of the needle, both inside and outside, and on the other hand to limit the heating and preserve the integrity, including the original shape, of the said needle.

REFERENCES:
patent: 3742187 (1973-06-01), Folus
patent: 3844275 (1974-10-01), Elliott
patent: 5075529 (1991-12-01), Kudo
patent: 5212362 (1993-05-01), Burden et al.
patent: 5277868 (1994-01-01), Langford
patent: 5300752 (1994-04-01), Elmerick et al.
patent: 5573732 (1996-11-01), Waggener et al.

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