CN114345918B - Organic contaminated soil steam thermal desorption device - Google Patents
Organic contaminated soil steam thermal desorption device Download PDFInfo
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- CN114345918B CN114345918B CN202210010605.3A CN202210010605A CN114345918B CN 114345918 B CN114345918 B CN 114345918B CN 202210010605 A CN202210010605 A CN 202210010605A CN 114345918 B CN114345918 B CN 114345918B
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Abstract
The invention discloses a steam thermal desorption device for organic contaminated soil, which relates to the technical field of contaminated soil remediation, and comprises a box body and a thermal desorption rod, wherein the box body is used for bearing the organic contaminated soil; the box body comprises an upper end plate, a cylinder body and a lower end plate; the upper end and the lower end of the cylinder are both provided with extending parts extending outwards, and the extending parts at the upper end and the lower end of the cylinder are respectively connected with the edges of the upper end plate and the lower end plate in a sealing manner through a plurality of first bolts; the upper end plate is provided with a hot knockout rod mounting port and a plurality of first waste gas discharge ports; the lower end plate is provided with a wastewater discharge port and a plurality of second waste gas discharge ports; be equipped with multirow sensor inserted hole on the barrel, sensor connects and installs the sensor that is used for monitoring pollutant content in the organic contaminated soil in the inserted hole. The invention is provided with a sensor to judge whether the organic polluted soil is completely repaired.
Description
Technical Field
The invention relates to the technical field of contaminated soil remediation, in particular to an organic contaminated soil steam thermal desorption device.
Background
At present, aiming at organic polluted soil remediation, more and more indoor researches and engineering applications adopt a thermal desorption remediation technology. The technique is a process of heating the organic contaminants in the soil to a temperature sufficient to volatilize or separate the organic contaminants from the contaminated medium into a gas treatment system. The existing thermal desorption device has the following problems, so that the device is not beneficial to researching the steam desorption process: 1. most of the prior steam thermal desorption devices input heat steam exogenously, and generate larger heat loss; 2. at present, a three-dimensional thermal desorption device can simulate the migration state of pollutants in a three-dimensional space, but the migration process of the pollutants cannot be observed, a two-dimensional flat plate model is generally used for observation, and the flat plate model does not accord with the real action state of three-dimensional soil pressure and the like.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to solve the problems in the prior art, and provides a steam thermal desorption device for organic contaminated soil, which can be used for in-situ efficient injection of steam and steam composite fluid under the scale of three-dimensional real soil pressure to rapidly repair the organic contaminated soil.
The technical scheme is as follows: a steam thermal desorption device for organic contaminated soil comprises a box body and a thermal desorption rod, wherein the box body is used for bearing the organic contaminated soil; the box body comprises an upper end plate, a cylinder body and a lower end plate; the upper end and the lower end of the cylinder are both provided with extending parts extending outwards, and the extending parts at the upper end and the lower end of the cylinder are respectively connected with the edges of the upper end plate and the lower end plate in a sealing manner through a plurality of first bolts; the upper end plate is provided with a hot knockout rod mounting port and a plurality of first waste gas discharge ports; the lower end plate is provided with a wastewater discharge port and a plurality of second waste gas discharge ports; the cylinder is provided with a plurality of rows of sensor insertion openings, and sensors for monitoring the content of pollutants in the organic polluted soil are installed in the sensor insertion openings;
the lower end of the thermal release rod penetrates through the thermal release rod mounting hole and extends into the box body, a mounting plate is arranged on the thermal release rod, and the mounting plate is connected with the upper end plate in a sealing mode through a plurality of second bolts; the heat-removing rod positioned on the upper side of the upper end plate is provided with a heat-conducting oil input port, a heat-conducting oil output port, a hot water input port, a hot water output port and a high-pressure air input port; a plurality of gas-liquid injection ports are arranged on the hot stripping rod positioned in the box body; the hot disengaging rod is internally provided with a heat conducting oil pipeline communicated with a heat conducting oil input port and a heat conducting oil output port, a hot water pipeline communicated with a hot water input port and a hot water output port, and a high-pressure air pipeline communicated with a high-pressure air input port and a gas-liquid jet orifice, wherein the gas-liquid jet orifice is connected with the hot water pipeline through a connecting pipe.
Further, the heat release rod is vertically installed at the center of the box body.
Furthermore, a plurality of vertical quartz glass observation tubes are arranged in the box body in a penetrating manner; the upper end of the quartz glass observation tube extends out of the upper end plate, and the lower end of the quartz glass observation tube extends out of the lower end plate; the quartz glass observation tube is hermetically connected with the upper end plate and the lower end plate; a plurality of toughened glass observation windows are arranged on the cylinder body.
Furthermore, the number of the quartz glass observation tubes is four, and the distance from the axis of each quartz glass observation tube to the inner wall of the cylinder body is the same as the distance from the axis of the cylinder body to the axis of the cylinder body.
Furthermore, a miniature camera robot is arranged in the quartz glass observation tube.
Furthermore, 6 vertical rows of sensor inserting inlets are uniformly formed in the cylinder body; each vertical row of sensor insertion inlets is provided with 8 rows of sensor insertion inlets, and the distances between the adjacent sensor insertion inlets are the same.
Further, the waste water discharge port is located at the center of the lower end plate; the four first waste gas discharge ports are uniformly arranged around the hot knockout rod mounting port; the second exhaust gas discharge openings are four and are uniformly arranged around the wastewater discharge opening.
Furthermore, a switch valve is arranged on the waste water discharge port.
Furthermore, the lower side of the lower end plate is provided with at least three supporting legs.
Furthermore, the box body is made of stainless steel.
Has the beneficial effects that:
1) the invention can inject steam and steam composite fluid in situ with high efficiency under the scale of three-dimensional real soil pressure to rapidly repair the organic polluted soil.
2) The quartz glass observation tube and the toughened glass observation window are arranged, so that the water vapor state of the steam sprayed from the thermal desorption rod to the organic polluted soil can be visually observed; the hot knockout rod is arranged at the center of the box body, the distance from the quartz glass observation tube to the inner wall of the cylinder body and the axis of the cylinder body is the same, the observation window on the cylinder body is matched, the observation point taking range is comprehensive, and the comprehensive analysis data is more accurate. The miniature camera robot takes pictures in situ in real time to observe the moving state of pollutants and steam in the soil body.
3)6 the arrangement of the vertical sensors can measure the treatment effect of the organic polluted soil at each part in the box body, judge the optimal time for repairing the organic polluted soil and avoid the waste of energy caused by incomplete repair or too long repair time.
4) The arrangement of the first waste gas discharge port and the second waste gas discharge port can recycle the gas in the steam of the treated organic polluted soil, and the subsequent treatment is carried out to reduce pollution.
5) Be equipped with the waste water discharge port on the lower end plate, after steam met soil, partly condensed into water, discharged through the waste water discharge port and carried out subsequent processing and detect, judge the pollution condition.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic view of the structure of the present invention in a front view;
FIG. 3 is a schematic structural view of the upper end plate of the present invention;
reference numbers in the figures: a box body-1; an upper end plate-101; a lower end plate-102; hot desquamation rod-2; a hot stripping rod mounting port-3; a first exhaust gas discharge port-401; a second exhaust gas discharge port-402; an observation tube mounting port-5; a first bolt hole-601; a second bolt hole-602; quartz glass observation tube-7; a toughened glass observation window-8; a drain pipe-9; supporting legs-10; the sensor is connected with the insertion port-11.
Detailed Description
The technical solutions of the present invention are described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the embodiments.
As shown in fig. 1-3, a steam thermal desorption device for organic contaminated soil comprises a box body 1 for loading organic contaminated soil and a thermal desorption rod 2; the box body 1 comprises an upper end plate 101, a cylinder body and a lower end plate 102; the box body 1 is made of stainless steel. The thermal trip bar 2 is vertically installed at the center of the case 1.
The upper end and the lower end of the cylinder are both provided with extending parts extending outwards, and the extending parts at the upper end and the lower end of the cylinder are respectively connected with the edges of the upper end plate 101 and the lower end plate 102 in a sealing manner through 20 first bolts; first bolt holes 601 matched with first bolts are respectively formed in the extending parts at the upper end and the lower end of the cylinder body and the edges of the upper end plate 101 and the lower end plate 102;
the upper end plate 101 is provided with a hot-stripping rod mounting port 3, 4 first exhaust gas discharge ports 401 and 4 observation pipe mounting ports 5; the four first waste gas discharge ports 401 are uniformly arranged around the hot knockout rod mounting port 3;
a wastewater discharge port and 4 second exhaust gas discharge ports 402 are arranged on the lower end plate 102; the waste water discharge port is positioned in the center of the lower end plate 102, and a switch valve is arranged on the waste water discharge port; the number of the second waste gas discharge ports 402 is four and is uniformly arranged around the waste water discharge port. The lower side of the lower end plate 102 is provided with at least three supporting feet 10.
The lower end of the thermal release rod 2 penetrates through the thermal release rod mounting port 3 and extends into the box body 1, a mounting plate is arranged on the thermal release rod 2, the mounting plate is connected with the upper end plate 101 in a sealing mode through 8 second bolts, and a second bolt hole 602 matched with the second bolt is formed in the upper cover plate; a heat conduction oil inlet, a heat conduction oil outlet, a hot water inlet, a hot water outlet and a high-pressure air inlet are formed in the heat release rod 2 positioned on the upper side of the upper end plate 101; a plurality of gas-liquid jet ports are arranged on the heat release rod 2 positioned in the box body 1; the heat-conducting oil pipe is communicated with the heat-conducting oil input port and the heat-conducting oil output port, the hot water pipe is communicated with the hot water input port and the hot water output port, the high-pressure air pipe is communicated with the high-pressure air input port and the gas-liquid jet orifice, and the gas-liquid jet orifice is connected with the hot water pipe through a connecting pipe.
4 vertical quartz glass observation tubes 7 are installed in the box body 1 in a penetrating manner; a miniature camera robot is arranged in the quartz glass observation tube 7, and the camera robot is used for taking pictures in situ in real time to observe the migration state of pollutants and steam in the soil body under the scale of three-dimensional real soil pressure.
The upper end of the quartz glass observation tube 7 extends out of the upper end plate 101, and the lower end of the quartz glass observation tube 7 extends out of the lower end plate 102; the quartz glass observation tube 7 is hermetically connected with the upper end plate 101 and the lower end plate 102; the distance between the axis of each quartz glass observation tube 7 and the inner wall of the cylinder body is the same as that between the axis of the cylinder body; two opposite side surfaces of the cylinder body are provided with 2 toughened glass observation windows 8.
The cylinder body is uniformly provided with 6 vertical rows of sensor inserting inlets 11; every vertical row of sensor connects socket inlet 11 and is equipped with 8 row sensor and connects socket inlet 11, and the distance between adjacent sensor connects socket inlet 11 is the same, install the sensor that is used for monitoring the interior pollutant content of organic contaminated soil in the sensor connects socket inlet 11.
The working principle of the invention is as follows: when the device is used, the water-saving device is provided with a water tank,
1) inserting the hot tripping rod into the box body, and screwing the second bolt;
2) moving the upper end plate away, injecting organic polluted soil into the box body, aligning an observation tube mounting opening on the upper end plate with the quartz glass observation tube, covering the upper end plate, and screwing a first bolt;
3) and connecting each interface;
4) according to the test requirements, a proper sensor, a heat conduction oil circulating device, a high-pressure air generating device, a hot water generating device and a steam, hot air and ozone generating device can be connected.
The heat-conducting oil input port and the heat-conducting oil output port on the heat-removing rod are connected with the heat-conducting oil circulating device, the high-pressure air input port on the heat-removing rod is connected with the high-pressure air generating device, and the hot water input port on the heat-removing rod can be connected with the hot water generating device and can also be connected with three or any two of the hot air generating device, the steam generating device and the ozone generating device, so that the combined injection of hot air, steam and ozone or the combined injection of every two of the hot air, steam and ozone can be realized.
The quartz glass observation tube and the toughened glass observation window are arranged, so that the water vapor state of the steam sprayed from the thermal desorption rod to the organic polluted soil can be visually observed; the hot-release rod is arranged at the center of the box body, the distance from the quartz glass observation tube to the inner wall of the cylinder body and the axis of the cylinder body is the same, the observation window on the cylinder body is matched, the observation point taking range is comprehensive, and the data of comprehensive analysis is more accurate.
The miniature camera robot shoots a steam thermal desorption process in a repairing process, collects images of a steam migration process, can compare the difference of the steam and pollutant migration images at different positions, and analyzes the migration process and the migration mechanism.
The sensor can measure the treatment effect of the organic polluted soil at each part in the box body, judge the optimal time for repairing the organic polluted soil, and avoid the energy waste caused by incomplete repair or too long repair time.
The arrangement of the first waste gas discharge port and the second waste gas discharge port can recover gas in the steam of the treated organic polluted soil, and the subsequent treatment is carried out, so that the pollution is reduced;
be equipped with the waste water discharge port on the lower end plate, after steam met soil, partly condensed into water, discharged through the waste water discharge port and carry out subsequent processing. The wastewater discharge port can simulate the downward movement of polluted wastewater in the repairing process of an actual site.
As noted above, while the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limited thereto. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A steam thermal desorption device for organic contaminated soil is characterized by comprising a box body and a thermal desorption rod, wherein the box body is used for bearing the organic contaminated soil; the box body comprises an upper end plate, a cylinder body and a lower end plate; the upper end and the lower end of the cylinder are both provided with extending parts extending outwards, and the extending parts at the upper end and the lower end of the cylinder are respectively connected with the edges of the upper end plate and the lower end plate in a sealing manner through a plurality of first bolts; the upper end plate is provided with a hot-stripping rod mounting port and a plurality of first waste gas discharge ports; the lower end plate is provided with a wastewater discharge port and a plurality of second waste gas discharge ports; a plurality of rows of sensor insertion holes are formed in the cylinder body, and sensors for monitoring the content of pollutants in the organic polluted soil are installed in the sensor insertion holes;
the lower end of the thermal release rod penetrates through the thermal release rod mounting hole and extends into the box body, a mounting plate is arranged on the thermal release rod, and the mounting plate is connected with the upper end plate in a sealing mode through a plurality of second bolts; a heat conduction oil input port, a heat conduction oil output port, a hot water input port, a hot water output port and a high-pressure air input port are arranged on the heat-removing rod positioned on the upper side of the upper end plate; a plurality of gas-liquid injection ports are formed in the hot stripping rod positioned in the box body; the heat-conducting oil spray nozzle is characterized in that a heat-conducting oil pipeline communicated with a heat-conducting oil input port and a heat-conducting oil output port, a hot water pipeline communicated with a hot water input port and a hot water output port, and a high-pressure air pipeline communicated with a high-pressure air input port and a gas-liquid spray nozzle are arranged in the heat-disengaging rod, and the gas-liquid spray nozzle is connected with the hot water pipeline through a connecting pipe.
2. The steam thermal desorption device for the organic contaminated soil as claimed in claim 1, wherein the thermal desorption rod is vertically installed at the center of the box body.
3. The steam thermal desorption device for the organic contaminated soil according to claim 1, wherein a plurality of vertical quartz glass observation tubes are installed in the box body in a penetrating manner; the upper end of the quartz glass observation tube extends out of the upper end plate, and the lower end of the quartz glass observation tube extends out of the lower end plate; the quartz glass observation tube is hermetically connected with the upper end plate and the lower end plate; a plurality of toughened glass observation windows are arranged on the cylinder body.
4. The steam thermal desorption device for the organic contaminated soil as claimed in claim 3, wherein the number of the quartz glass observation tubes is four, and the distance from the axis of each quartz glass observation tube to the inner wall of the cylinder and the axis of the cylinder is the same.
5. The steam thermal desorption device for organic contaminated soil according to claim 3, wherein a micro camera robot is installed on the quartz glass observation tube.
6. The steam thermal desorption device for the organic contaminated soil according to claim 4, wherein 6 vertical rows of sensor insertion inlets are uniformly formed on the cylinder; every vertical row of sensor plug inlets is provided with 8 rows of sensor plug inlets, and the distances between the adjacent sensor plug inlets are the same.
7. The steam thermal desorption device for the organically-polluted soil as claimed in claim 1, wherein the waste water discharge port is located at the center of the lower end plate; the four first waste gas discharge ports are uniformly arranged on the periphery of the hot knockout rod mounting port; the second exhaust emission ports are four and are evenly arranged around the wastewater emission port.
8. The steam thermal desorption device for the organic contaminated soil as claimed in claim 1, wherein a switch valve is provided on the waste water discharge port.
9. The steam thermal desorption device for the organic contaminated soil as claimed in claim 1, wherein the lower side of the lower end plate is provided with at least three supporting legs.
10. The steam thermal desorption device for the organic contaminated soil as claimed in claim 1, wherein the box body is made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210010605.3A CN114345918B (en) | 2022-01-06 | 2022-01-06 | Organic contaminated soil steam thermal desorption device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210010605.3A CN114345918B (en) | 2022-01-06 | 2022-01-06 | Organic contaminated soil steam thermal desorption device |
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| CN114345918A CN114345918A (en) | 2022-04-15 |
| CN114345918B true CN114345918B (en) | 2022-09-02 |
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