CN206184912U - Indirect thermal desorption waste heat recovery system of organic contaminated soil - Google Patents
Indirect thermal desorption waste heat recovery system of organic contaminated soil Download PDFInfo
- Publication number
- CN206184912U CN206184912U CN201621177931.XU CN201621177931U CN206184912U CN 206184912 U CN206184912 U CN 206184912U CN 201621177931 U CN201621177931 U CN 201621177931U CN 206184912 U CN206184912 U CN 206184912U
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- Prior art keywords
- air
- air preheater
- thermal desorption
- desorption
- indirect thermal
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- 238000003795 desorption Methods 0.000 title claims abstract description 62
- 239000002689 soil Substances 0.000 title claims abstract description 24
- 239000002918 waste heat Substances 0.000 title abstract description 11
- 238000011084 recovery Methods 0.000 title abstract description 7
- 230000008676 import Effects 0.000 claims abstract description 7
- 238000000746 purification Methods 0.000 claims abstract description 6
- 239000000428 dust Substances 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 238000013517 stratification Methods 0.000 claims description 3
- 238000013459 approach Methods 0.000 claims description 2
- 239000000779 smoke Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 abstract description 37
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 11
- 239000003546 flue gas Substances 0.000 abstract description 11
- 238000002485 combustion reaction Methods 0.000 abstract description 3
- 239000003517 fume Substances 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract description 3
- 108091023288 HOTAIR Proteins 0.000 abstract 1
- 238000007599 discharging Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 150000002240 furans Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 150000003071 polychlorinated biphenyls Chemical class 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005067 remediation Methods 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model relates to an indirect thermal desorption waste heat recovery system of organic contaminated soil, including indirect thermal desorption equipment, still include one -level air preheater, second grade air preheater, cyclone and fan, the desorption gas export of indirect thermal desorption equipment links to each other with the cyclone import, and the cyclone export links to each other with the desorption gas import of one -level air preheater, and the desorption gas export of one -level air preheater gets into subsequent purification craft equipment, the air intlet of one -level air preheater links to each other with the fan export, and the air outlet of one -level air preheater links to each other with the air intlet of second grade air preheater, the flue gas inlet of second grade air preheater links to each other with the exhanst gas outlet of indirect thermal desorption equipment, and the exhanst gas outlet of second grade air preheater links to each other with the facility of discharging fume, and the hot -air export of second grade air preheater links to each other with hot desorption apparatus combustion air pipeline. Through the waste heat recovery to high temperature flue gas and desorption tail gas, realize recycling of waste heat, improved the energy utilization of system and rateed.
Description
Technical field
The utility model belongs to technical field of soil remediation, is related to residual neat recovering system in a kind of soil thermal desorption system,
Relate in particular to the system and equipment of waste heat recovery in organic polluted soil indirect thermal desorption process.
Background technology
Thermal desorption technology refers to, by directly or indirectly heat exchange, pollution medium and its contained pollutant to be heated to
Enough temperature, make pollutant that the process volatilized or be separate is able to from pollution medium.
The indirect thermal desorption technology of soil is the mode of the flue gas and soil indirect heat exchange produced with fuel, makes to be polluted in soil
Component reaches enough temperature, the process for making it evaporate and with Soil mediation separate.Indirect thermal desorption technology can be used in extensive
Volatilization state organic matter in meaning（VOCs）, half volatilization state organic matter（SVOCs）, agricultural chemicals, or even higher boiling chlorinated compound is such as
In the improvement and reparation of PCBs, bioxin and furans contaminated soil.Because organic pollution often has boiling point higher, heat
Need to carry out soil the heating of higher temperature in desorption process, substantial amounts of high-temperature flue gas and desorption tail gas can be produced after heating,
Due to the organic pollution that contains in high-temperature tail gas, it is necessary to carry out cooling dedusting after carry out charcoal absorption or burning disposal, because
This this partial heat will bring the difficulty of subsequent treatment as do not utilized.Patent No. CN201510207851.8 " two-part augers
Indirectly heat desorption apparatus " do not utilize the waste heat of desorption tail gas once using the fume afterheat of indirectly heat come preheated air；
Patent No. CN201510599338.8 " the contaminated soil thermal desorption repair system that a kind of waste heat is recycled ", then make use of helical disk
Tubular heat exchange device reclaims tail gas sensible heat and carrys out warm-up combustion-supporting air, but is changed because the solid particulate matter contained in tail gas is gathered in
Hot device bottom, will cause spiral coil inside to block after longtime running, cleaning difficulty is larger, reduces the heat exchange efficiency of equipment.
Therefore, by improving the heat losses that the indirect thermal desorption system of organic polluted soil is designed to deal with repair process
Problem, while reducing its temperature by reclaiming tail gas heat quantity, can reduce the consumption of energy resources in subsequent processes, improve
The efficiency of subsequent purification equipment.
Utility model content
The purpose of this utility model is：For the problem that above-mentioned prior art is present, a kind of organic polluted soil is proposed
Indirect thermal desorption residual neat recovering system, by the waste heat recovery to high-temperature flue gas and desorption tail gas, realizes the recycling of waste heat, drops
Low exhaust gas post-processing difficulty, reduces the consumption of energy resources in desorption system, improves the efficiency of subsequent purification equipment.
In order to reach object above, the indirect thermal desorption residual neat recovering system of organic polluted soil that the utility model is related to,
Including indirect thermal desorption equipment, it is characterised in that：Also include one-level air preheater, two grades of air preheaters, cyclone dust collectors and blower fans；
The desorption gas outlet of the indirect thermal desorption equipment is connected with cyclone dust collectors import, and the cyclone entrance is empty with one-level
The desorption gas import of pre- device is connected, and the desorption gas outlet of the one-level air preheater enters follow-up purification process equipment；Described one
The air intlet of level air preheater is connected with fan outlet, and air outlet slit and the air of two grades of air preheaters of the one-level air preheater enter
Mouth is connected；The gas approach of two grades of air preheaters is connected with the exhanst gas outlet of indirect thermal desorption equipment, two grades of air preheaters
Exhanst gas outlet be connected with smoke removal facility, hot air outlet and the thermal desorption device comburent air duct phase of two grades of air preheaters
Even.
The utility model further the technical scheme that limits as：The air outlet slit of the fan outlet and one-level air preheater it
Between be provided with bypass pipe, regulating valve is provided with bypass pipe.One-level air preheater is adjusted into by changing the aperture of regulating valve
Air capacity so that regulation one-level air preheater desorption gas outlet temperature indirectly.
Further, the one-level, two grades of air preheaters are dividing wall type heat exchanger.One-level air preheater and two grades of air preheater two-stages
Series connection, the air of fan outlet successively realizes two-step heating by one-level air preheater, two grades of air preheaters.
Further, the dividing wall type heat exchanger uses tubular air preheater or heat pipe preheater.
Further, the one-level air preheater is provided with the deashing device for removing air preheater heat exchange surface dust stratification.
The beneficial effects of the utility model：The utility model proposes soil thermal desorption residual neat recovering system, with following
Beneficial effect：（1）By the waste heat recovery to high-temperature flue gas and desorption tail gas, the recycling of waste heat is realized, improve system energy
Source utilization rate；（2）Air is preheated by two-stage step, it is possible to provide the hot-air of higher temperature is used for technique；（3）Desorption tail gas
Through cyclone dust collectors dedusting before being exchanged heat with air preheater, so as to reduce air preheater dust stratification amount；（4）Because desorption tail gas are using indirect
Cooling, the water capacity of tail gas does not increase, and is conducive to the purified treatment of follow-up tail gas.
Brief description of the drawings
The utility model is further described below in conjunction with the accompanying drawings.
Fig. 1 is the utility model equipment connection diagram.
Specific embodiment
Embodiment one
The utility model discloses a kind of indirect thermal desorption residual neat recovering system of organic polluted soil, basic structure such as Fig. 1
It is shown：Including indirect thermal desorption equipment 1, cyclone dust collectors 3, one-level air preheater 4, two grades of air preheaters 2, blower fan 5 and bypass are adjusted
Valve 6.
The elevated temperature desorption gas that indirect thermal desorption device 1 is produced introduces cyclone dust collectors 3 by pipeline, and elevated temperature desorption gas is taken
The bulky grain solid thing of band（5~15 μm of ＞）After cyclone dust collectors 3 are captured, discharged by the dust-exhausting port of bottom；Rough dedusting
Elevated temperature desorption gas afterwards introduces one-level air preheater 4 by pipeline, and elevated temperature desorption gas is in one-level air preheater 4 and from 5 liters of blower fan
Normal temperature air after pressure carries out wall-type heat exchange, and follow-up tail gas clean-up technique is introduced after the reduction of elevated temperature desorption temperature degree, and normal temperature is empty
Enter two grades of air preheaters 2 after gas lift temperature；The exhanst gas outlet of two grades of high-temperature flue gas imports of air preheater 2 and indirect thermal desorption device 1
Connection, air of the high-temperature flue gas after two grades of air preheaters 2 are interior to intensification carries out the second heating, and the air after heating enters indirect thermal
The comburent air duct of desorption apparatus 1, the flue gas after cooling introduces fume extractor.
Blower fan 5 is exported and bypass pipe is provided with and the air outlet slit of one-level air preheater 4 between, and regulating valve 6 is set on bypass pipe,
By the air capacity for changing the aperture of regulating valve to be adjusted into one-level air preheater, so as to adjust the de- of one-level air preheater 4 indirectly
Attached gas outlet temperature.
The utility model reclaims the heat of flue gas and tail gas during thermal desorption using air preheater, carries out two-stage to air pre-
Heat, and air after preheating is used for system combustion air, the purpose of energy utilization rate is improved so as to reach.Air is empty by one-level
After pre- device, two grades of air preheater step heating, the heat recovery of flue gas and tail gas is realized, the hot-air of generation is helped for fuel
Combustion, improves the energy utilization rate of system, simultaneously because tail gas is lowered the temperature using after indirect heat exchange, is conducive to follow-up purified treatment,
Improve the efficiency of subsequent purification equipment.
The foregoing is only the preference of the indirect thermal desorption residual neat recovering system of organic polluted soil described in the utility model
Implementation method, does not constitute the restriction to the utility model protection domain.It is any it is of the present utility model spirit and principle within
Any modification, equivalent and improvement for being made etc., should be included within claims of the present utility model.
Claims (5)
1. the indirect thermal desorption residual neat recovering system of organic polluted soil, including indirect thermal desorption equipment, it is characterised in that：Also include
One-level air preheater, two grades of air preheaters, cyclone dust collectors and blower fans；The desorption gas outlet of the indirect thermal desorption equipment and whirlwind
Deduster import is connected, and the cyclone entrance is connected with the desorption gas import of one-level air preheater, the one-level air preheater
Desorption gas outlet enter follow-up purification process equipment；The air intlet of the one-level air preheater is connected with fan outlet, institute
The air outlet slit for stating one-level air preheater is connected with the air intlet of two grades of air preheaters；The gas approach of two grades of air preheaters and
The exhanst gas outlet for connecing thermal desorption equipment is connected, and the exhanst gas outlet of two grades of air preheaters is connected with smoke removal facility, two grades of skies
The hot air outlet of pre- device is connected with thermal desorption device comburent air duct.
2. the indirect thermal desorption residual neat recovering system of organic polluted soil according to claim 1, it is characterised in that：The wind
Machine is exported and is provided with bypass pipe and the air outlet slit of one-level air preheater between, and regulating valve is provided with bypass pipe.
3. the indirect thermal desorption residual neat recovering system of organic polluted soil according to claim 1, it is characterised in that：Described one
Level, two grades of air preheaters are dividing wall type heat exchanger.
4. the indirect thermal desorption residual neat recovering system of organic polluted soil according to claim 3, it is characterised in that：Described
Wall type heat exchanger uses tubular air preheater or heat pipe preheater.
5. the indirect thermal desorption residual neat recovering system of organic polluted soil according to claim any one of 1-4, its feature exists
In：The one-level air preheater is provided with the deashing device for removing air preheater heat exchange surface dust stratification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621177931.XU CN206184912U (en) | 2016-10-27 | 2016-10-27 | Indirect thermal desorption waste heat recovery system of organic contaminated soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621177931.XU CN206184912U (en) | 2016-10-27 | 2016-10-27 | Indirect thermal desorption waste heat recovery system of organic contaminated soil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206184912U true CN206184912U (en) | 2017-05-24 |
Family
ID=58732191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621177931.XU Expired - Fee Related CN206184912U (en) | 2016-10-27 | 2016-10-27 | Indirect thermal desorption waste heat recovery system of organic contaminated soil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206184912U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107520246A (en) * | 2017-09-26 | 2017-12-29 | 上海格林曼环境技术有限公司 | Burning heat transfer and residual neat recovering system for the thermal desorption reparation of contaminated site original position |
| CN107685073A (en) * | 2017-09-26 | 2018-02-13 | 上海格林曼环境技术有限公司 | A kind of concentrated combustion formula original position thermal desorption prosthetic device for contaminated site |
| CN110014035A (en) * | 2019-05-22 | 2019-07-16 | 孙晓凡 | A kind of thermal desorption soil remediation equipment |
| CN112139231A (en) * | 2020-09-16 | 2020-12-29 | 山东大成环境修复有限公司 | System and method for low-temperature thermal desorption of volatile organic contaminated soil |
| CN116851431A (en) * | 2023-06-30 | 2023-10-10 | 江苏澳墨环境科技有限公司 | Ectopic thermal desorption device and method for mercury contaminated soil |
-
2016
- 2016-10-27 CN CN201621177931.XU patent/CN206184912U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107520246A (en) * | 2017-09-26 | 2017-12-29 | 上海格林曼环境技术有限公司 | Burning heat transfer and residual neat recovering system for the thermal desorption reparation of contaminated site original position |
| CN107685073A (en) * | 2017-09-26 | 2018-02-13 | 上海格林曼环境技术有限公司 | A kind of concentrated combustion formula original position thermal desorption prosthetic device for contaminated site |
| CN107685073B (en) * | 2017-09-26 | 2024-05-14 | 上海格林曼环境技术有限公司 | Centralized combustion type in-situ thermal desorption repairing device for polluted site |
| CN110014035A (en) * | 2019-05-22 | 2019-07-16 | 孙晓凡 | A kind of thermal desorption soil remediation equipment |
| CN112139231A (en) * | 2020-09-16 | 2020-12-29 | 山东大成环境修复有限公司 | System and method for low-temperature thermal desorption of volatile organic contaminated soil |
| CN116851431A (en) * | 2023-06-30 | 2023-10-10 | 江苏澳墨环境科技有限公司 | Ectopic thermal desorption device and method for mercury contaminated soil |
| CN116851431B (en) * | 2023-06-30 | 2024-02-02 | 江苏澳墨环境科技有限公司 | Ectopic thermal desorption device and method for mercury contaminated soil |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170524 |