System for purifying contaminated soil

Details System for purifying contaminated soil System for purifying contaminated soil

2008-08-13

2011-12-06

Lu, Jiping (Department: 3743)

Drying and gas or vapor contact with solids

Apparatus

With means to treat gas or vapor

C034S073000, C034S075000, C034S079000, C034S086000, C034S130000, C034S261000, C034S573000

Reexamination Certificate

active

08069581

ABSTRACT:
Disclosed herein is a system for purifying contaminated soil, which restores soil contaminated by a variety of pollutants to the condition before the contamination, and which itself provides the driving source required for the purification. The system includes: a dryer which dries contaminated soil, separates waste gas generated during the drying from the contaminated soil, and discharges the waste gas; a pyrolysis apparatus which indirectly heats the dried contaminated soil in a hermetic condition to divide the contaminated soil into purified soil and pyrolysis gas, and separately discharges the purified soil and the pyrolysis gas; a transfer fan for forcibly transferring the discharged pyrolysis gas; a burner for oxidizing the waste gas discharged from the dryer and the pyrolysis gas forcibly transferred by the transfer fan, to heat the pyrolysis apparatus; and a cooling facility for directly spraying cooling water on the discharged purified soil to cool the purified soil.

REFERENCES:
patent: 5056541 (1991-10-01), Schade et al.
patent: 5253597 (1993-10-01), Swanstrom et al.
patent: 5264654 (1993-11-01), Kreft et al.
patent: 6996918 (2006-02-01), Bsirske et al.
patent: 2004008872 (2004-01-01), None

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