CN110788123A - Heating device and soil remediation gas thermal desorption equipment - Google Patents
Heating device and soil remediation gas thermal desorption equipment Download PDFInfo
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- CN110788123A CN110788123A CN201911211848.8A CN201911211848A CN110788123A CN 110788123 A CN110788123 A CN 110788123A CN 201911211848 A CN201911211848 A CN 201911211848A CN 110788123 A CN110788123 A CN 110788123A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 276
- 239000002689 soil Substances 0.000 title claims abstract description 70
- 238000005067 remediation Methods 0.000 title claims abstract description 18
- 238000003795 desorption Methods 0.000 title claims abstract description 14
- 239000000779 smoke Substances 0.000 claims description 39
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 36
- 239000003546 flue gas Substances 0.000 claims description 36
- 239000007789 gas Substances 0.000 claims description 14
- 238000012544 monitoring process Methods 0.000 claims description 11
- 230000000903 blocking effect Effects 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 239000003517 fume Substances 0.000 claims 4
- 238000002485 combustion reaction Methods 0.000 description 6
- 238000011065 in-situ storage Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 238000003900 soil pollution Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011066 ex-situ storage Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/06—Reclamation of contaminated soil thermally
- B09C1/065—Reclamation of contaminated soil thermally by pyrolysis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a heating device and soil remediation gas thermal desorption equipment, and relates to the technical field of soil remediation. Including at least one heating unit, heating unit includes combustor, heating well casing and exhaust pipe, and the heating well casing is including being used for setting up in the inside first heating section of soil, and first heating section both ends all are provided with first section of stretching out, and the one end of first section of stretching out is linked together with first heating section, the other end stretches out soil, and the port department that two first sections of stretching out soil is provided with combustor and exhaust pipe respectively. In the soil remediation of less pollution, the first heating section can be laid horizontally inside the soil, so that the first heating section can be set longer, and a larger heating range can be obtained in the extending direction of the first heating section. The number of heating well pipes to be laid in the same volume of soil is smaller than in the prior art, and the number of burners required is reduced. Thus, the cost of the heating device is low.
Description
Technical Field
The invention relates to the technical field of soil remediation, in particular to a heating device and soil remediation gas thermal desorption equipment.
Background
Soil remediation is a technical measure to restore normal function to contaminated soil. At present, the polluted areas (saturated areas and unsaturated areas) are heated to promote the organic pollutants to move into gas phase or liquid phase in an accelerated mode, and the organic pollutants are collected and conveyed to the surface of the ground through a gas phase or liquid phase collecting well to be treated, so that the underground polluted areas are quickly repaired.
An in-situ gas thermal desorption device for soil remediation is disclosed in an invention patent document with the application publication number of CN 110252792A. It comprises a heat conduction device, an extraction device, a processing device and a control device. The heat conduction device is used for heating a target restoration area in a heat conduction mode and comprises a heating well, a combustion-supporting fan and a burner, wherein the heating well comprises an inner pipe and an outer pipe, the inner pipe is arranged in the outer pipe, and when the heating well is heated, the combustion-supporting fan is started to form negative pressure in the burner and the heating well; the external clean air is sucked and mixed with the fuel gas at the bottom of the burner, and then an igniter at the bottom of the burner is started; the generated flame enters an inner pipe of the heating well and forms hot air; the negative pressure formed by the combustion fan sucks hot air into the outer pipe to heat the outer pipe; the outer tube heats the soil through heat conduction, and the soil heating process is started. The hot air is discharged through a combustion fan after being cooled by a ground pipeline, or enters an ectopic in-situ gas thermal desorption system to be used as a heat source. Namely: and a plurality of heating wells which are arranged in the vertical direction are distributed in the repairing area along the horizontal plane at intervals so as to heat all soil in the repairing area.
The heating device is suitable for a repairing area with deep soil pollution depth. When the soil pollution depth to be repaired is shallow), the heating device is adopted, a burner needs to be arranged at the head of each heating well, the used burners are more, each burner is used for heating the heating well with the length less than or equal to the pollution depth, the length of the heating well which can be heated by one burner is far greater than the pollution depth, the value of the burner cannot be fully utilized, the price of the burner is higher, and the cost of the heating device is high.
Therefore, how to manufacture an economical and efficient heating device suitable for repairing soil with shallow pollution becomes a problem to be solved urgently by those skilled in the art.
Disclosure of Invention
The invention aims to provide a heating device which is suitable for repairing soil with shallow pollution and has low cost.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention provides a heating device which comprises at least one heating unit, wherein the heating unit comprises a burner, a heating well pipe and a smoke exhaust pipeline, the heating well pipe comprises a first heating section arranged in soil, two ends of the first heating section are respectively provided with a first extending section, one end of each first extending section is communicated with the first heating section, the other end of each first extending section extends out of the soil, and ports of the two first extending sections extending out of the soil are respectively provided with the burner and the smoke exhaust pipeline.
Optionally, the inner wall of the tail part of the burner, which is far away from the first heating section, is provided with a flue gas blocking wall which is distributed at intervals along the extending direction of the first heating section, and the flue gas blocking wall and the inner wall of the tail part of the first heating section form a serpentine channel for flue gas to pass through.
Optionally, the heating unit includes two the heating well casing, every the both ends of heating well casing are provided with respectively the combustor with smoke exhausting pipe, two the heating well casing sets up side by side, and one the heating well casing is provided with the one end and another of combustor the heating well casing is provided with the one end of smoke exhausting pipe is corresponding, every first heating section is close to rather than being connected at least one position department of the first half section of combustor all is provided with accesss to another first heating section is close to rather than being connected the honeycomb duct of at least one position department of the second half section of smoke exhausting pipe.
Optionally, a flue gas check valve is arranged on the draft tube.
Optionally, one end of each draft tube is arranged at a third of the length of one first heating section close to the burner connected with the first heating section and is communicated with another first heating section close to a third of the length of the smoke exhaust pipeline connected with the first heating section.
Optionally, a flow guide branch pipe which is one half of the length of the other first heating section is arranged on the side wall of the flow guide pipe which is one third of the length of the combustor connected with the first heating section.
Optionally, a flow regulating valve is arranged on the smoke exhaust pipeline.
Optionally, still include temperature control equipment and with the temperature monitoring well casing that the first heating section of heating well casing set up side by side temperature monitoring well casing is provided with a plurality of temperature sensor along its extending direction interval, be provided with the flow solenoid valve on the honeycomb duct, the flow solenoid valve with temperature sensor respectively with temperature control equipment communicably connects.
Optionally, still include the auxiliary heating well casing, the auxiliary heating well casing is including being used for being close to the field border and setting up inside soil the second heating section, be provided with on the second heating section lateral wall with the section is stretched out to the corresponding second of exhaust pipe quantity and respectively with exhaust pipe is linked together, the one end of second heating section also is provided with the second and stretches out the section and be provided with smoke exhaust fan at its port department that stretches out ground.
The invention also provides a soil remediation gas thermal desorption device which comprises a heating device and is characterized in that the heating device is any one of the heating devices.
The technical scheme provided by the invention can have the following beneficial effects: the heating well pipe comprises a first heating section arranged in soil and first extending sections arranged at two ends of the first heating section, wherein the two first extending sections extend out of the soil and are respectively connected with a burner and a smoke exhaust pipeline. So set up, in the soil remediation that pollutes shallowly, first heating section can be laid at the inside level of soil, and first heating section can set up longer like this, obtains great heating range in its extending direction for the combustor rather than being connected obtains make full use of. The number of heating well pipes to be laid in the same volume of soil is smaller than that of the prior art, and the number of burners is reduced (one heating well pipe for each burner). Thus, the cost of the heating device is low.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a top view of a heating device shown in some embodiments;
FIG. 2 is a front view of a heating device shown in some embodiments;
FIG. 3 is a top view of a heating unit shown in some embodiments;
FIG. 4 is a front view of a multi-layered distribution of soil above the ground as the heating device shown in some embodiments heats the soil;
FIG. 5 is a front view of a monolayer distribution as the heating device shown in some embodiments heats soil above ground.
In the figure: 1. heating the well pipe; 2. a flow guide pipe; 3. a flue gas barrier wall; 4. a flue gas one-way valve; 5. a combustion controller; 6. a burner; 7. a ground surface; 8. a smoke exhaust duct; 9. a smoke exhaust fan; 10. a flow rate solenoid valve; 11. auxiliary heating of the well pipe; 12. heating the boundary of the field region; 13. adjusting a valve; 14. a temperature monitoring well pipe; 15. a temperature sensor; 16. a temperature control device; 17. a central control device; 18. a central control room; 19. a diversion branch pipe; 20. contaminated soil; 101. a first heating section; 102. a first extension section; 111. a second heating section; 112. a second protruding section.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus or methods consistent with certain aspects of the invention.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Hereinafter, embodiments will be described with reference to the drawings. The embodiments described below do not limit the contents of the invention described in the claims. The entire contents of the configurations shown in the following embodiments are not limited to those required as solutions of the inventions described in the claims.
Referring to fig. 1-5, the present invention provides a heating apparatus, which comprises one or more heating units, wherein each heating unit comprises a burner 6, a heating well pipe 1 and a smoke exhaust pipe 8, the heating well pipe 1 comprises a first heating section 101, two ends of the first heating section 101 are provided with first extending sections 102, the first heating section 101 is used for being installed in soil, (when in-situ soil remediation is performed, the first heating section 101 is installed below the ground), and is generally laid horizontally, or is laid obliquely at a small angle with the horizontal plane; the tube may be a straight tube extending in a straight line or a bent tube extending in a meandering manner. One end of one first extending section 102 is communicated with one end of the first heating section 101, the other end of the first extending section extends out of the ground and is provided with a burner 6, and one end of the other first extending section 102 is communicated with the other end of the first heating section 101, the other end of the first extending section extends out of the ground and is provided with a smoke exhaust pipeline 8. When the device is used, high-temperature flue gas generated by the combustor 6 moves along the heating well pipe 1 and is discharged from the smoke discharge pipeline 8, and the high-temperature flue gas heats soil around the heating well pipe 1 in the flowing process. By adopting the heating device, when shallow polluted soil is repaired, soil in a polluted field can be heated to a preset temperature only by paving one layer of heating units (preferably, two adjacent heating units are arranged in a reverse direction, namely, a burner 6 of one heating unit corresponds to a smoke exhaust pipeline of the other heating unit) at intervals in the horizontal direction, and the first heating section 101 can be made longer along the horizontal direction. Among the prior art, the heating well pipe extends along vertical direction, and every heating well pipe is shorter (depending on the degree of depth of polluting soil and deciding, if pollute the degree of depth and be 3 meters, then only need lay the heating well pipe of 3 meters internal length), need interval set up a plurality of heating well pipes on the horizontal direction to be covered with whole contaminated field area. Compared with the prior art that the heating well pipes with more quantity need to be laid to meet the heat required by soil in the polluted field to reach the preset temperature, and each heating unit in the two heating well pipes is provided with the same quantity (one or two) of burners 6, the invention has the advantages of less required burners 6, low manufacturing cost and full utilization of the combustion performance of each burner 6. Secondly, the heating well pipes 1 are less in number, and are convenient to lay, and the installation efficiency is high.
In a preferred embodiment, as shown in fig. 2, the first heating section 101 is a straight pipe laid in a horizontal direction, and the first extending section 102 is disposed at an angle of 45 degrees with respect to the first heating section 101 and connected by a 135-degree elbow. Can make the flue gas circulation comparatively smooth and easy, effectively prevent the flue gas refluence. The burner 6 and the heating well pipe 1, and the smoke exhaust pipeline 8 and the heating well pipe 1 can be connected through flanges. It should be noted that the burner 6 is integrally provided with the combustion controller 5, so that the burner 6 can regulate the gas flow, control the start and stop and reset. The heating well pipe 1 may be made of a seamless carbon steel pipe.
The inner wall of the first heating section 101, which is far away from the tail of the burner 6, is provided with flue gas blocking walls 3 distributed at intervals along the extending direction of the first heating section 101, as shown in fig. 3, the flue gas blocking walls 3 and the inner wall of the tail of the first heating section 101 form a serpentine channel for flue gas to pass through. The direction of the arrows in the heating well pipe 1 is the direction of the smoke flow. For a clearer and more concise description of the invention, the end of the heating well pipe 1 close to the burner 6 is called the head, and the end far from the burner 6 is called the tail. Since the smoke passes from the head to the tail, heat is released to the outside in the passing process to heat the soil, and the temperature of the heating well pipe 1 is gradually reduced. Set up flue gas separation wall 3 and can increase the dwell time of flue gas at first heating section 101 afterbody, make the flue gas and the pipe wall contact time extension of first heating section 101, increase the temperature of this section heating well casing 1 to reduce the difference in temperature of first heating section 101 head and afterbody, make the temperature of soil along each position of the extending direction of first heating section 101 more even. Therefore, when the tail part reaches the preset temperature, the temperature of the head part is less higher than the preset temperature, the waste of heat is avoided, and the energy consumption is saved. Preferably, the flue gas baffle walls 3 are arranged at intervals from two thirds of the length of the heating well pipe 1 to the tail end, the material is carbon steel, the thickness is 3-4mm, the cross section can be arc-shaped, the bending angle is 45 degrees, and the width is about two thirds of the inner diameter of the heating well pipe 1.
In some embodiments, the heating unit comprises two heating well pipes 1, each heating well pipe 1 is provided with a burner 6 and a smoke exhaust pipe 8 at two ends, as shown in fig. 1 and 3, the two heating well pipes 1 are arranged side by side, and one end of one heating well pipe 1 provided with the burner 6 corresponds to one end of the other heating well pipe 1 provided with the smoke exhaust pipe 8, and at least one position of each first heating section 101 close to the first half section of the burner 6 connected with the first heating section is provided with a flow guide pipe 2 leading to at least one position of the other first heating section 101 close to the second half section of the smoke exhaust pipe 8 connected with the first heating section. The flow guide pipe 2 leading to one position in the rear half of one first heating section 101 far away from the head of the other first heating section 101 can be arranged at one position in the front half of the first heating section 101 near the head of the first heating section, and the flow guide pipes 2 leading to a plurality of positions in the rear half of the other first heating section 101 far away from the head of the other first heating section can be arranged at a plurality of positions in the front half of the first heating section 101 near the head of the first heating section. So set up, the back is sent from combustor 6 to the high temperature flue gas, when the position of flow through honeycomb duct 2, has partial high temperature flue gas to flow to the afterbody of another first heating section 101 through honeycomb duct 2, and the temperature of the partial high temperature flue gas that flows in from another first heating section 101 will be far greater than the temperature of the high temperature flue gas that flows out to the afterbody from combustor 6 of this first heating section 101. Therefore, the heat of the high-temperature flue gas generated by the burner 6 can be more uniformly distributed along the extending direction of the first heating section 101, and the temperature difference between the head part and the tail part of the first heating section 101 is reduced. Secondly, two first heating sections 101 are distributed in opposite directions (the head and the tail are corresponding), when the first half section (or the second half section) of the polluted field heated by the first half section of one first heating section 101 and the second half section of the other first heating section 101 together are compared with the same-direction distribution (the head and the head are corresponding), the first half section of the polluted field heated by the first half sections of the two first heating sections 101 together, and the second half section of the polluted field heated by the second half sections of the two first heating sections 101 together, the soil is heated more uniformly along the extending direction.
The pipe diameter of the draft tube 2 can be set to be smaller, the flue gas flow velocity in the draft tube 2 is faster, the heat release of the part of the flue gas in the draft tube 2 can be reduced, and the flue gas enters the other first heating section 101 as soon as possible. Of course, the heat emitted by the draft tube 2 can also heat the soil, so that the temperature of the soil between the two heating well pipes 1 is more uniform. Preferably, the cross-sectional area of the draft tube 2 can be set to be one third of the cross-sectional area of the first heating section 101, so that only a small part of the flue gas flows to the other first heating section 101, and the sufficient flue gas amount of the first heating section 101 is ensured.
The draft tube 2 can be provided with a smoke one-way valve 4, so that the smoke can flow more stably according to the preset flow direction.
Preferably, one end of each draft tube 2 is arranged at one first heating section 101 near one third of the length of the burner 6 connected thereto and opens into the other first heating section 101 near one third of the length of the flue gas duct 8 connected thereto. The arrangement of the flow guide tube 2 at this location enables a better even temperature distribution of the first heating section 101 along its extension.
Wherein each of the lateral walls of the flow conduit 2, which is arranged one third the length of the burner 6 connected to one of the first heating sections 101, is provided with a flow guiding branch 19, which opens into the other first heating section 101, one half the length thereof, as shown in fig. 1. The half length of the first heating section 101 is a weak area for heating, and the temperature at the weak area can be increased by adding the flow guiding branch pipes 19, and meanwhile, the temperature rising speed is increased, so that the whole field area is rapidly heated to the target temperature.
Wherein, the smoke exhaust pipe 8 is provided with a regulating valve 13. The regulating valve 13 is arranged, so that the wind pressure and the wind volume of the tail end of the heating well pipe 1 can be controlled, the flow rate of flue gas is controlled, and the discharge temperature of the flue gas at the tail end of each heating well pipe 1 is ensured to be close.
In some embodiments, the system further comprises a temperature control device 16 and a temperature monitoring well pipe 14 arranged side by side with the first heating section 101 of the heating well pipe 1, as shown in fig. 1, the temperature monitoring well pipe 14 is provided with a plurality of temperature sensors 15 at intervals along the extending direction thereof, the flow guide pipe 2 is provided with a flow solenoid valve 10, and the flow solenoid valve 10 and the temperature sensors 15 are respectively communicably connected with the temperature control device 16. Preferably, the temperature monitoring well pipes 14 are arranged at a short distance (typically 0.2-0.3m) from the first heating section 101, and one temperature sensor 15 is respectively arranged at the head, the middle and the tail of the temperature monitoring well pipes 14 (of course, more than three temperature sensors 15 can be arranged as the case may be). During the use, temperature sensor 15 real-time supervision is along the temperature of each position on the temperature monitoring well pipe 14 extending direction (because temperature monitoring well pipe 14 sets up side by side with first heating section 101, and the distance is not far away, and the temperature of both each positions is close), then sends temperature data for temperature control device 16, and temperature control device 16 carries out analysis and judgement to temperature data, and then the flow of control flow solenoid valve 10, and then makes first heating section 101 along its extending direction everywhere temperature more even. The temperature control device 16, the temperature sensor 15 and the flow rate solenoid valve 10 are all in the prior art, and detailed description thereof is omitted. The flow electromagnetic valve 10, the temperature sensor 15 and the temperature control device 16 are connected by a lead (cable), and the lead can be armored. The material has certain toughness, can be bent underground, is high temperature resistant, is not easy to corrode, and is suitable for soil thermal desorption technology.
The heating device can further comprise an auxiliary heating well pipe 11, the auxiliary heating well pipe 11 comprises a second heating section 111 arranged inside the soil along the boundary of the field, second extending sections 112 corresponding to the number of the smoke exhaust pipes 8 are arranged on the side wall of the second heating section 111 and are respectively communicated with the smoke exhaust pipes 8, and a second extending section 112 is arranged at one end of the second heating section 111 and is provided with a smoke exhaust fan 9 at the port of the second heating section extending out of the soil. The high-temperature flue gas is recycled through the auxiliary heating well pipe 11 and is used for heating soil at the boundary 12 of the field, so that the heat loss of the system in flue gas discharge can be further reduced, and the restoration of the temperature-rising weak area at the boundary 12 of the heating field can be guaranteed to reach the standard.
In particular applications, the soil is contaminated to a shallow depth when the contaminated soil is located underground. As shown in fig. 1 and 2, a heating device is arranged in a heating field boundary 12, a plurality of heating units are arranged side by side along the width direction of the field on a horizontal plane below the ground, each heating unit comprises two heating well pipes 1, the two heating well pipes 1 are arranged in opposite directions (the head of one heating well pipe corresponds to the tail of the other heating well pipe), a first heating section 101 of each heating well pipe 1 extends along a straight line direction, a first extending section 102 and the first heating section 101 form a 135-degree angle and extend out of the ground, a burner 6 is arranged at a port of one first extending section 102 extending out of the ground, the burner 6 is a burner integrated with a combustion controller 5, a smoke exhaust pipe 8 is arranged at a port of the other first extending section 102 extending out of the ground, and a regulating valve 13 is arranged on the smoke exhaust pipe 8. The draft tube 2 is arranged at the first heating section 101 one third away from the head part and leads to the other first heating section 101 one third away from the tail part, a draft branch tube 19 is arranged on the side wall of the draft tube 2, and the draft branch tube 19 leads to the other first heating section 101 one half way. The diversion branch pipes 19 and the diversion pipe 2 are both provided with flow electromagnetic valves 10. Heating field boundary 12 still is provided with two auxiliary heating well pipes 11, and auxiliary heating well pipe 11 is including setting up the second heating section 111 below ground, and second heating section 111 includes the two sections that the mutually perpendicular who sets up apart from heating field boundary 12 certain distance distributes, is located one section of width direction and is provided with a plurality of second and stretches out section 112, and second stretches out section 112 and smoke exhaust pipe 8 one-to-one and is linked together through governing valve 13 and smoke exhaust pipe 8 above ground. One end of the second heating section 111, which is located at a section in the length direction and is far away from a section in the width direction, is also provided with a second extending section 112, and a port of the second extending section extending out of the ground is provided with a smoke exhaust fan 9. The second extension 112 is disposed at a 45 degree angle to the horizontal. The distance between two first heating sections 101 in the heating unit is set as a, two adjacent heating units are also arranged in parallel in opposite directions, the distance can be set as b, and a is about 30% larger than b. The soil heating device is arranged in parallel in the opposite directions, so that the heated soil is heated more uniformly along the extension direction of the heat collecting unit; because the existence of the draft tube 2 in the heating unit leads to that the heating speed in the heating unit is faster, and the temperature is comparatively even, therefore the heating well pipe interval a in the heating unit is generally set to be 0.3 times far than the heating well interval b between the heating units. Therefore, the soil can be heated more uniformly in the parallel direction. Meanwhile, since a is 0.3 times longer than b, compared with the case without the flow guide pipe 2 (a should be equidistant to b), fewer heating units are needed, and the cost is saved. The floor 7 of the area within the heating field boundary 12 may also be provided as a heat-insulated hardened floor. The heat is fully used for heating the soil, and the loss caused by the heat dissipating to the atmosphere is reduced.
It should be noted that the above heating device can also be used for ex-situ soil remediation (i.e. the contaminated soil is dug out of the ground and transported to the ground for remediation), and can be laid in a single layer in the contaminated soil 20, as shown in fig. 5. Multiple layers can also be laid in the contaminated soil 20, as shown in fig. 4, and when the multiple layers are laid, the first extending section 102 and the smoke exhaust duct 8 can be arranged in parallel with the first heating section 101.
The invention also provides a thermal desorption device for the soil remediation gas, which comprises a heating device, wherein the heating device is the heating device described in any one of the embodiments. The soil remediation gas thermal desorption equipment can also comprise a central control device 17 and a central control room 18 for further controlling the heating device. Because this has adopted the heating device that states in the above-mentioned embodiment of soil restoration gas thermal desorption equipment, therefore this soil restoration gas thermal desorption equipment is unanimous with the beneficial effect that above-mentioned heating device produced, so the repeated description is no longer given here.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. The utility model provides a heating device for soil remediation gas thermal desorption equipment, includes at least one heating unit, heating unit includes combustor (6), heating well casing (1) and exhaust fume pipe (8), a serial communication port, heating well casing (1) is including being used for setting up in inside first heating section (101) of soil, first heating section (101) both ends all are provided with first section (102) of stretching out, first one end of stretching out section (102) with first heating section (101) are linked together, the other end stretches out soil, two first port department that stretches out section (102) and stretch out soil is provided with respectively combustor (6) with exhaust fume pipe (8).
2. The heating device according to claim 1, characterized in that the inner wall of the first heating section (101) far away from the tail of the burner (6) is provided with flue gas blocking walls (3) which are distributed at intervals along the extension direction of the first heating section (101), and the flue gas blocking walls (3) and the inner wall of the tail of the first heating section (101) form a serpentine channel for flue gas to pass through.
3. The heating device according to claim 1, wherein the heating unit comprises two heating well pipes (1), wherein the burner (6) and the smoke exhaust pipe (8) are respectively arranged at two ends of each heating well pipe (1), the two heating well pipes (1) are arranged side by side, one end of one heating well pipe (1) provided with the burner (6) corresponds to one end of the other heating well pipe (1) provided with the smoke exhaust pipe (8), and a flow guide pipe (2) leading to the other first heating section (101) is arranged at least at one position close to the first half section of the burner (6) connected with the first heating section, and the other first heating section (101) is arranged at least one position close to the second half section of the smoke exhaust pipe (8) connected with the first heating section.
4. A heating device as claimed in claim 3, characterized in that the draft tube (2) is provided with a flue gas non-return valve (4).
5. A heating device according to claim 3, characterized in that one end of each of said flow-guiding pipes (2) is arranged in one of said first heating sections (101) near one third of the length of said burner (6) connected thereto and opens into the other of said first heating sections (101) near one third of the length of said fume duct (8) connected thereto.
6. A heating device according to claim 5, characterized in that each flow guide (2) arranged one third the length of the burner (6) connected to one of the first heating sections (101) is provided with a flow guide branch (19) on its side wall which opens into one half the length of the other first heating section (101).
7. A heating device according to claim 1, wherein the fume duct (8) is provided with a regulating valve (13).
8. The heating device according to claim 3, further comprising a temperature control device (16) and a temperature monitoring well pipe (14) arranged side by side with the first heating section (101) of the heating well pipe (1), wherein the temperature monitoring well pipe (14) is provided with a plurality of temperature sensors (15) at intervals along the extending direction thereof, the flow guide pipe (2) is provided with a flow solenoid valve (10), and the flow solenoid valve (10) and the temperature sensors (15) are respectively communicably connected with the temperature control device (16).
9. The heating device according to claim 1, further comprising an auxiliary heating well pipe (11), wherein the auxiliary heating well pipe (11) comprises a second heating section (111) for being arranged inside the soil near the heating field boundary (12), the second heating section (111) is provided with a second extending section (112) corresponding to the number of the smoke exhaust pipes (8) on the side wall and is respectively communicated with the smoke exhaust pipes (8), and one end of the second heating section (111) is also provided with the second extending section (112) and is provided with a smoke exhaust fan (9) at the port of the second extending section (111) extending out of the ground.
10. A soil remediation gas thermal desorption apparatus comprising a heating device, characterised in that the heating device is as claimed in any one of claims 1 to 9.
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| CN201911211848.8A CN110788123A (en) | 2019-12-02 | 2019-12-02 | Heating device and soil remediation gas thermal desorption equipment |
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| CN201911211848.8A CN110788123A (en) | 2019-12-02 | 2019-12-02 | Heating device and soil remediation gas thermal desorption equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111672894A (en) * | 2020-06-24 | 2020-09-18 | 宝航环境修复有限公司 | Be applied to prosthetic heat accumulation pulsed heating device of soil thermal desorption |
| CN114054489A (en) * | 2020-07-30 | 2022-02-18 | 中国石油天然气股份有限公司 | Method for removing organic pollutants in formation by in-situ generation of multi-element thermal fluid |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5213445A (en) * | 1991-09-26 | 1993-05-25 | Ikenberry Maynard D | System for heated air extraction of contaminants from soil stack |
| US5228804A (en) * | 1992-06-25 | 1993-07-20 | Balch Thomas H | Method and apparatus for hydrocarbon-contaminated soil remediation |
| CN2322110Y (en) * | 1997-05-20 | 1999-06-02 | 云南烟草文山州公司 | High-efficient energy-saving flue-curing workshop |
| US6000882A (en) * | 1997-12-03 | 1999-12-14 | United Soil Recycling | Methods and systems for remediating contaminated soil |
| US20020003988A1 (en) * | 1997-05-20 | 2002-01-10 | Thomas Mikus | Remediation method |
| CN202630357U (en) * | 2012-06-14 | 2012-12-26 | 中科为宇（北京）科技发展有限公司 | Device for burning and heating associated gases of oilfield casing |
| CN105826579A (en) * | 2015-01-08 | 2016-08-03 | 李效雨 | Temperature difference energy chemical battery |
| CN206129380U (en) * | 2016-10-31 | 2017-04-26 | 四川城市职业学院 | Environment -friendly automobile blast pipe |
| CN206449667U (en) * | 2016-10-10 | 2017-08-29 | 中国能源建设集团安徽电力建设第一工程有限公司 | Residual-heat utilization |
| CN107138515A (en) * | 2017-05-25 | 2017-09-08 | 浙江宜可欧环保科技有限公司 | A kind of heat supply method of energy-saving and emission-reduction |
| CN107971331A (en) * | 2017-12-28 | 2018-05-01 | 江苏盖亚环境科技股份有限公司 | A kind of dystopy gas heating extracts integral type thermal desorption device |
| CN108500046A (en) * | 2018-05-09 | 2018-09-07 | 中国联合工程有限公司 | Contaminated soil thermal desorption device and its method for reducing dioxin generation |
| CN109695441A (en) * | 2017-10-23 | 2019-04-30 | 大庆东油睿佳石油科技有限公司 | A kind of method of parallel water horizontal well microwave heating exploitation of gas hydrate |
| CN208967911U (en) * | 2018-09-16 | 2019-06-11 | 广东力暖热能科技有限公司 | A kind of radiator of high power gas room heater |
| CN209416045U (en) * | 2018-12-29 | 2019-09-20 | 宁夏宁平炭素有限责任公司 | Energy conservation and environmental protection electrode paste raw material high-temperature calcination equipment |
| CN211304220U (en) * | 2019-12-02 | 2020-08-21 | 中科鼎实环境工程有限公司 | Heating device and soil remediation gas thermal desorption equipment |
-
2019
- 2019-12-02 CN CN201911211848.8A patent/CN110788123A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5213445A (en) * | 1991-09-26 | 1993-05-25 | Ikenberry Maynard D | System for heated air extraction of contaminants from soil stack |
| US5228804A (en) * | 1992-06-25 | 1993-07-20 | Balch Thomas H | Method and apparatus for hydrocarbon-contaminated soil remediation |
| CN2322110Y (en) * | 1997-05-20 | 1999-06-02 | 云南烟草文山州公司 | High-efficient energy-saving flue-curing workshop |
| US20020003988A1 (en) * | 1997-05-20 | 2002-01-10 | Thomas Mikus | Remediation method |
| US6000882A (en) * | 1997-12-03 | 1999-12-14 | United Soil Recycling | Methods and systems for remediating contaminated soil |
| CN202630357U (en) * | 2012-06-14 | 2012-12-26 | 中科为宇（北京）科技发展有限公司 | Device for burning and heating associated gases of oilfield casing |
| CN105826579A (en) * | 2015-01-08 | 2016-08-03 | 李效雨 | Temperature difference energy chemical battery |
| CN206449667U (en) * | 2016-10-10 | 2017-08-29 | 中国能源建设集团安徽电力建设第一工程有限公司 | Residual-heat utilization |
| CN206129380U (en) * | 2016-10-31 | 2017-04-26 | 四川城市职业学院 | Environment -friendly automobile blast pipe |
| CN107138515A (en) * | 2017-05-25 | 2017-09-08 | 浙江宜可欧环保科技有限公司 | A kind of heat supply method of energy-saving and emission-reduction |
| CN109695441A (en) * | 2017-10-23 | 2019-04-30 | 大庆东油睿佳石油科技有限公司 | A kind of method of parallel water horizontal well microwave heating exploitation of gas hydrate |
| CN107971331A (en) * | 2017-12-28 | 2018-05-01 | 江苏盖亚环境科技股份有限公司 | A kind of dystopy gas heating extracts integral type thermal desorption device |
| CN108500046A (en) * | 2018-05-09 | 2018-09-07 | 中国联合工程有限公司 | Contaminated soil thermal desorption device and its method for reducing dioxin generation |
| CN208967911U (en) * | 2018-09-16 | 2019-06-11 | 广东力暖热能科技有限公司 | A kind of radiator of high power gas room heater |
| CN209416045U (en) * | 2018-12-29 | 2019-09-20 | 宁夏宁平炭素有限责任公司 | Energy conservation and environmental protection electrode paste raw material high-temperature calcination equipment |
| CN211304220U (en) * | 2019-12-02 | 2020-08-21 | 中科鼎实环境工程有限公司 | Heating device and soil remediation gas thermal desorption equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111672894A (en) * | 2020-06-24 | 2020-09-18 | 宝航环境修复有限公司 | Be applied to prosthetic heat accumulation pulsed heating device of soil thermal desorption |
| CN114054489A (en) * | 2020-07-30 | 2022-02-18 | 中国石油天然气股份有限公司 | Method for removing organic pollutants in formation by in-situ generation of multi-element thermal fluid |
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