KR850002817A - Method and apparatus for treating sludge contaminated with polychlorinated biphenyl - Google Patents

Abstract

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Description

Method and apparatus for treating sludge contaminated with polychlorinated biphenyl

As this is a public information case, the full text was not included.

1 is a system design diagram of an apparatus according to an example of the present invention. 2 is an enlarged cross sectional view taken along line 2-2 of FIG. 3 is an enlarged partial cross-sectional view taken along line 3-3 of FIG.

Claims (22)

Irradiating and heating polychlorinated biphenyl (PCB) contaminants in a heating apparatus to a hot gas at 850-2500 ° F to separate the PCB and transport it from the heating apparatus for further processing of the separated PCB. Method of treating bottom material with PCB contaminated water. The method of claim 1, comprising forming a flow stream of micropowder particles and gaseous entrained PCB material and separating gaseous entrained PCB material from the fine powder particles. The method of claim 1 comprising a PCB combustion step. The method of claim 1 wherein said material is irradiated to said hot gas for a time sufficient to leave less than 1% of said PCB in said material. The method of claim 4 wherein the material is irradiated to the hot gas for 0.5-10 seconds. The method of claim 1, wherein the hot gas evaporates the PCB and entrains a portion of the material onto the evaporated PCB as fine powder particles. The method of claim 6, wherein the fine powder particles are separated from the PCB. The method of claim 1 wherein the sludge in the separator is contacted with the hot turbulent gas at 850-2500 ° F. to evaporate the PCB, thereby separating the PCB from the material and entraining a portion of the material in the form of microparticles. Conveying the PCB separated from the heating device, leaving a dry, slightly roughened material containing the following PCB. The method of claim 1 including conveying the entrained microparticle material from the heating device and separating the microparticle material from the entrained PCB. The method of claim 8, wherein the material is in contact with hot turbulent air at 1400-2000 ° F. 10. 9. The method of claim 8, wherein the material is introduced into a central portion of the heating apparatus and then placed on the (angular) primary drying surface installed downward from the outer circumferential surface of the heating apparatus to the central portion of the heating apparatus so as to contact hot hot gas and PCB steam. The first on a lower secondary drying surface installed (angular) downward from the center of the heater to the outer circumferential surface of the heater to introduce material, evaporate the PCB from the material and introduce the material to the outer circumferential surface of the heater. Discarding the material from the vehicle surface. 12. The method of claim 11, wherein said first and second dry surfaces are frustoconical. 4. A method according to claim 3, wherein the PCB material is injected into the flame in the transverse direction in a space along the length of the combustor flame. The method of claim 13 including mixing the PCB material and fossil fuel upon combustion. The method of claim 14 including applying combustible fuel gas and air to the flame length transversely in a space along the combustor flame length. The method of claim 13 comprising heating the sludge to 1400-2000 ° F. for 0.5-2 seconds in the heating step. And a device for evaporating the PCB by irradiating the sludge to a hot gas stream, and a device for treating PCB contaminated sludge, comprising a separator for separating PCB and water from the sludge. 18. The apparatus of claim 17, wherein the separator is irradiated with a stream of hot gas for a time sufficient to evaporate a substantial amount of sludge from the sludge, leaving less than 1% of PCB in the sludge and from the drying apparatus for further processing. A device comprising a separate PCB and a device for conveying water. 19. The apparatus of claim 18, wherein the separator is configured to irradiate the sludge with a hot gas stream to dry it, and to transport vapor, gaseous entrained PCB, and some sludge particles separated from the separator, and from the water and the PCB. A device comprising a device for separating particles. 20. The apparatus of claim 19, further comprising an apparatus for further treating the water and the PCB. The primary sludge-hot gas contact surface of claim 17, wherein the separator is installed downward from the outer circumferential surface of the separator to the center of the separator so that the sludge is introduced into the center of the separator and then comes into contact with the hot gas and the PCB steam. And a secondary internal sludge-hot gas contact surface lower than (angular) installed downward from the center of the separator to the outer circumferential surface of the separator to evaporate the PCB from the sludge and introduce the sludge to the outer circumferential surface of the separator. 20. The apparatus of claim 19, comprising a device for injecting air into the combustion flame in a transverse direction in a space along the length of the combustor and comprising a device for combusting the separated PCB. ※ Note: The disclosure is based on the initial application.