Apparatus and method for removing volatile contaminants from the

Details Apparatus and method for removing volatile contaminants from the Apparatus and method for removing volatile contaminants from the

1989-03-10

1991-01-08

Kisliuk, Bruce M.

Wells

Processes

Separating material entering well

166 57, 166267, 166272, 166370, 166381, 405131, 405258, E21B 4324, E21B 4340, E21B 2300, E02D 311

Patent

active

049827880

ABSTRACT:
Hazardous volatile contaminants are removed from the ground by circulating air between two substantially parallel wells and by removing the vapors of the organic compound from the circulated air using at least one of a condenser and a demister. To enhance efficiency the air is recirculated in a closed loop. The heat output of the condensation process is used to heat the recirculated air. Pipes having openings along only a limited portion of their lengths are placed in the wells and the depth of the openings adjusted to treat one level at a time, thereby preventing shunting of air through more porous soil layers. Flow rates can be equalized by using circumferentially placed induction wells surrounding an extraction well (or the reverse) and by controlling air flow through individual sections of a given level.

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