A device and method for in-situ thermal desorption and additional heating of polluted soil
A technology of polluted soil and additional heat, applied in the direction of restoration of polluted soil, to avoid temperature loss, improve efficiency, and promote circulation
Active Publication Date: 2022-01-28
JILIN UNIV
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Problems solved by technology
[0005] The purpose of the present invention is to provide a device and method for in-situ thermal desorption of contaminated soil in order to solve many problems existing in the vertical heating wells and extraction wells used in the existing in-situ heat conduction desorption
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[0036] see Figure 1 to Figure 6 Shown:
[0037] The contaminated soil enhanced in-situ heat removal and heating device provided by the present invention includes an installation tunnel 1, a heating pipe 2, an extraction pipe 3, a steam boiler 4, an extraction pump 5, a power supply station 6, an air compressor 10 and a controller 7 , where the installation tunnel 1 is set at one end of the polluted soil, the bottom of the installation tunnel 1 is set lower than the bottom of the pollutants in the polluted soil, the heating pipe 2 and the extraction pipe 3 are provided with an array, and the array heating pipe 2 and the extraction pipe The pipes 3 are alternately arranged in layers in the contaminated soil in the horizontal direction. The inlet of the heating pipe 2 and the outlet of the extraction pipe 3 are assembled on the side wall of the installation tunnel 1 on the side of the polluted soil. The heating pipe 2 passes through the pipeline and the air The compressors 10 a...
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The invention discloses a device and method for intensifying in-situ heat removal and heating of polluted soil. The heating device includes an installation tunnel, a heating pipe, an extraction pipe, a steam boiler, an extraction pump, a power supply station, an air compressor and a controller. The installation tunnel is set at one end of the polluted soil, and the bottom of the installation tunnel is set lower than the bottom of the pollutants in the polluted soil. There are arrays of heating tubes and extraction tubes, and the arrays of heating tubes and extraction tubes are arranged alternately in the horizontal direction. The layer is laid in the polluted soil body. The method is as follows: Step 1, create a horizontal working space for the extraction pipe and heating pipe; Step 2, make horizontal staggered holes in the installation tunnel; Step 3, install and debug equipment; Step 4, form a microcirculation; The tube maintains high thermal conductivity; step six, discharge after harmless treatment; step seven, realize precise thermal desorption of soil pollutants. Beneficial effects: form microcirculation, improve repair efficiency, and ensure heat conduction efficiency.
Description
technical field [0001] The invention relates to a device and method for remediating polluted soil, in particular to a device and method for intensifying in-situ thermal desorption and adding heat for polluted soil. Background technique [0002] In recent years, due to extensive industrial development, the soil in areas such as chemical plants and landfills has been polluted. In terms of soil pollution remediation, ex situ remediation of shallow soil is more common, while in situ remediation technology of deep soil started relatively late. Soil in-situ thermal desorption technology has been gradually promoted because it does not need to excavate and transfer soil, has little disturbance to the surrounding soil environment, completely removes pollutants, and can repair deep soil. [0003] According to different heating methods, in-situ thermal desorption technology is divided into three types: steam heating (SEE), electrical resistance heating (ERH), and thermal conduction he...
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IPC IPC(8): B09C1/06
CPCB09C1/062B09C2101/00
Inventor 杜立志韩亚鲁张晓培胡新民刘晨阳葛华
Owner JILIN UNIV