초록 ▼

A soil remediation system having apparatus for decontaminating particulate matter or dust entrained in and exhausted with a hot gas stream from a rotary drum wherein the particulate matter is subjected to heat-loss through an outer cylindrical wall of the drum. The system includes an inclined drum h

A soil remediation system having apparatus for decontaminating particulate matter or dust entrained in and exhausted with a hot gas stream from a rotary drum wherein the particulate matter is subjected to heat-loss through an outer cylindrical wall of the drum. The system includes an inclined drum having a burner arrangement for directing a flame and hot gas stream into and axially through the drum ro remediate soil being processed through the drum, and dust decontamination apparatus including a fixed sleeve concentric with a downstream end of the drum such that an annular cavity is formed between the sleeve and the drum, and a filtering arrangement adapted to receive the hot gas stream as the hot gas stream is exhausted from the drum and to remove particulate matter entrained therein. The system is adapted to convey the removed particulate matter to the annular cavity where the particulate matter is decontaminated by heat-loss conductively transferred through and/or radiatively transferred by the cylindrical wall from the flame. A spiral arrangement spaced within the annular cavity lifts the particulate matter up, over and in contact with, the cylindrical wall. The dust decontamination apparatus is adaptable for use with an existing soil remediation plant.

대표청구항 ▼

[ What is claimed and desired to be secured by Letters Patent is as follows:] [1.] A system for remediating contaminated soil containing airborne-prone particulate matter, comprising:a) an inclined rotary drum having a longitudinal axis, an input end, a discharge end, a cylindrical wall and a chambe

[ What is claimed and desired to be secured by Letters Patent is as follows:] [1.] A system for remediating contaminated soil containing airborne-prone particulate matter, comprising:a) an inclined rotary drum having a longitudinal axis, an input end, a discharge end, a cylindrical wall and a chamber extending axially within said cylindrical wall substantially from said input end to said discharge end;b) support means for supporting said drum, including an upstream housing and a downstream housing wherein said upstream and downstream housings are configured to rotatably and respectively receive said input end and said discharge end of said drum;c) input means for introducing the contaminated soil containing airborne-prone particulate matter into said chamber near said input end;d) burner means for directing a flame and hot gas stream into said chamber at said discharge end for interacting with the contaminated soil containing airborne-prone particulate matter and for remediating the contaminated soil;e) discharge means for discharging the soil, after remediation thereof, from said chamber near said discharge end;f) filtering means connected to said upstream housing for receiving said hot gas stream, including any of the airborne-prone particulate matter entrained therein, from said upstream housing and for filtering the entrained particulate matter from said hot gas stream;g) decontamination means for decontaminating the particulate matter filtered from said hot gas stream by subjecting the particulate matter to thermal energy escaping through said wall of said drum; andh) rotating means for rotating said drum about said longitudinal axis.