CN108817025A - A kind of the continous way indirect thermal desorption processing method and system of efficient stable - Google Patents
A kind of the continous way indirect thermal desorption processing method and system of efficient stable Download PDFInfo
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- CN108817025A CN108817025A CN201810501088.3A CN201810501088A CN108817025A CN 108817025 A CN108817025 A CN 108817025A CN 201810501088 A CN201810501088 A CN 201810501088A CN 108817025 A CN108817025 A CN 108817025A
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- 238000003795 desorption Methods 0.000 title claims abstract description 39
- 238000003672 processing method Methods 0.000 title claims abstract description 10
- 239000007789 gas Substances 0.000 claims abstract description 71
- 239000000428 dust Substances 0.000 claims abstract description 45
- 239000000463 material Substances 0.000 claims abstract description 36
- 239000007791 liquid phase Substances 0.000 claims abstract description 31
- 239000012071 phase Substances 0.000 claims abstract description 29
- 238000012545 processing Methods 0.000 claims abstract description 22
- 239000007790 solid phase Substances 0.000 claims abstract description 21
- 238000003303 reheating Methods 0.000 claims abstract description 20
- 238000000605 extraction Methods 0.000 claims abstract description 17
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000009833 condensation Methods 0.000 claims abstract description 12
- 230000005494 condensation Effects 0.000 claims abstract description 12
- 239000003546 flue gas Substances 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims description 22
- 239000007792 gaseous phase Substances 0.000 claims description 18
- 230000008676 import Effects 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 15
- 238000000926 separation method Methods 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 7
- 238000002485 combustion reaction Methods 0.000 claims description 6
- 239000000446 fuel Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- 238000012546 transfer Methods 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- 238000001179 sorption measurement Methods 0.000 claims description 3
- 238000013459 approach Methods 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 claims description 2
- 239000003245 coal Substances 0.000 claims description 2
- 239000003034 coal gas Substances 0.000 claims description 2
- 238000005485 electric heating Methods 0.000 claims description 2
- 230000005484 gravity Effects 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 239000003345 natural gas Substances 0.000 claims description 2
- 239000010742 number 1 fuel oil Substances 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 claims description 2
- 238000007254 oxidation reaction Methods 0.000 claims description 2
- 238000010926 purge Methods 0.000 claims description 2
- 238000000746 purification Methods 0.000 claims description 2
- 238000011109 contamination Methods 0.000 abstract 1
- 239000002910 solid waste Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000002957 persistent organic pollutant Substances 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 150000003071 polychlorinated biphenyls Chemical class 0.000 description 1
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B2101/00—Type of solid waste
- B09B2101/02—Gases or liquids enclosed in discarded articles, e.g. aerosol cans or cooling systems of refrigerators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Treating Waste Gases (AREA)
Abstract
A kind of continous way indirect thermal desorption processing method of efficient stable, including treating material to be transported in the material cavity of indirect thermal desorption device, the material cavity is heated using high-temperature flue gas for handling the solid waste of organic contamination；Liquid phase in treating material is vaporized into volatilization, obtains solid phase up to standard and the gas phase containing dust；The gas phase containing dust removes chalk dust removing using gas reheating device and dust-extraction unit, the gas phase being purified；The purified gas phase collects through condensation and obtains clean liquid phase；The clean liquid phase is completely separated using density contrast.The invention patent provides a kind of indirect thermal desorption processing technique of continous way of efficient stable, can remove the dust in gas phase by setting gas reheating device and dust-extraction unit, improve the reliability of whole set process continuous and steady operation.
Description
Technical field
The present invention relates to environmental technology fields, and in particular to a kind of continous way indirect thermal desorption processing method of efficient stable
And system.
Background technique
With becoming increasingly conspicuous for Environmental Protection in China problem, the enterprise of some high pollutions is shut down or is rectified and improved resettlement, to generate
A large amount of contaminated site, these contaminated sites not only constrain the construction and development in city, while can also bring serious ring
Border risk.It is again in the majority with the place of organic pollution in numerous industrial pollution places, including petroleum hydrocarbon class pollutant, pesticide
The organic pollutants such as pollutant, polycyclic aromatic hydrocarbon, Polychlorinated biphenyls.
In numerous processing techniques, indirect thermal desorption technology is to carry out indirect heating to material under oxygen-free environment, makes object
Organic pollutant vaporization volatilization, realizes the purpose of separation of solid and liquid in material, which both can effectively avoid generating bioxin
Risk, and recycling organic pollutant can be recycled, it is the most effective technology of processing organic pollutant generally acknowledged at present
Means.
In thermal desorption treatment process, since partial solid phase material is under absolute dry condition, a small amount of solid phase fine grained can be with
Volatilization gas phase be transferred in subsequent vapor condensation collection device, the presence of this solid phase particles object seriously affects a whole set of work
The continuous and steady operation of skill.The prior art《Contain waste deep treatment method and system》（CN 106007284 A）It proposes
The dust-laden oil mutually oil mixing with water gas with cleaning is obtained by way of temperature control dedusting, but dust is transferred to the oil of recycling by the technology
Xiang Zhong reduces the quality of oil recovery, fails thoroughly to reach being completely separated for the solid two-phase of oil.The prior art《A kind of oilfield waste
The processing method and system of object》（CN 104150728 B）In contain dust particle in the oily phase isolated, be unfavorable for again
It utilizes.
Summary of the invention
The present invention in view of the deficiency of the prior art, proposes a kind of indirect thermal desorption of continous way of efficient stable
Processing method and system.
A kind of continous way indirect thermal desorption processing method of efficient stable of the invention, this approach includes the following steps：
Material to be processed is transferred to feeding device by engineering machinery；
Streams closed to be processed is transported in the material cavity of indirect thermal desorption device by feeding device；
The heating chamber is heated using the high-temperature flue gas that fuel combustion generates, the liquid phase in material is made to vaporize volatilization, is realized solid
Liquid separation, obtains the gas phase containing dust and solid-phase material up to standard, and solid-phase material up to standard is transported to by the discharge device that cools down
Specified storage point；
The high-temperature flue gas generated using fuel combustion carries out the gas phase containing dust of generation to continue heating heating；
The gas phase containing dust after heating heating separates solid-phase dust therein by dust-extraction unit, obtains clean gas phase；
Purified gas phase carries out condensation collection, and uncooled gas phase carries out qualified discharge after carrying out deep purifying processing；
The liquid phase that condensation is collected is completely separated using density contrast, and the liquid phase after separation carries out system reuse or is transported to specified
Place is stored.
A kind of indirect thermal desorption processing system of the continous way of efficient stable, which is characterized in that including feeding device, indirect thermal
Desorption apparatus, gas reheating device, dust-extraction unit, dust collection transfer device, gas condensing unit, liquid phase separating device, tail
Air purifying apparatus, radiator, solid phase cooling discharge device；
The indirect thermal desorption device includes material cavity and heating chamber, and the import of the material cavity is connected with feeding device, described
The import of heating chamber is connected with the generating device of high-temperature flue gas, and the outlet of the heating chamber is connected with exclusive chimney；
The heat source import of the gas reheating device is connected with the outlet of external heat source, the thermal source outlet of the gas reheating device
It is connected with the import of external heat source, the air inlet of the gas reheating device is connected with the gaseous phase outlet of indirect thermal desorption device；
The dust-extraction unit import is connected with the gas outlet of gas reheating device, the dust collection transfer device and dust-extraction unit
Dust outlet be connected；
The gaseous phase condensing device is connected with the gaseous phase outlet of dust-extraction unit, the liquid phase separating device and gaseous phase condensing device
Liquid-phase outlet is connected, and the exhaust gas cleaner is connected with the gaseous phase outlet of gaseous phase condensing device；
The import of the radiator is connected with the liquid-phase outlet of gaseous phase condensing device, and the outlet of the radiator and gas phase are cold
The fluid inlet of solidifying device is connected；
The solid phase cooling discharge device is connected with the outlet of the material cavity of indirect thermal desorption device.
Preferably, the gas reheating device is added in the way of indirect heat exchange to gas by external heat source
Heat.
Preferably, the external heat source heat source includes the height generated using coal, coal gas, oil or natural gas as fuel combustion
One of warm flue gas or electric heating.
Preferably, the dust-extraction unit includes primary dust removing device and two-stage dust removal device；
Preferably, the primary dust removing device includes one of gravity settling chamber or cyclone dust collectors.
Preferably, the two-stage dust removal device includes high-temperature resistant bagged dust collector, ceramic filter or metal film mistake
One of filter.
Preferably, the two-stage dust removal device carries out deashing using the anti-Purge methods of pulsed.
Preferably, the gas condensing unit includes one of direct spraying condensation type or indirect heat exchange type condensation
Or two kinds of combinations.
Preferably, the exhaust gas cleaner include one of low-temperature adsorption, high-temperature oxidation or burning or
Multiple combinations.
Preferably, the water or external water that solid cooling discharge device is isolated using liquid phase separating device carry out
Spraying cooling cooling processing.
Compared with prior art, the advantages and positive effects of the present invention are：The invention proposes a kind of efficient stables
Gas reheating device and the dust-extraction unit mutual cooperation of continous way indirect thermal desorption processing method and system, setting can thoroughly be gone
The dust particles in gas phase isolated except thermal desorption treatment process carry out closed collection storage, whole set process company can be improved
The recycling organic matter quality of the stability of reforwarding row, recycling is good, and availability is high.
Detailed description of the invention
Attached drawing 1 is a kind of structural block diagram of the indirect thermal desorption processing system of continous way of efficient stable of the invention.
Specific embodiment
In order to further appreciate that feature of the invention, now in conjunction with case study on implementation, detailed description are as follows, and illustrated is preferable
Case study on implementation is only used to illustrate the technical scheme of the present invention, and the non-limiting present invention.
A specific embodiment of the invention is as follows：
A kind of continous way indirect thermal desorption processing method of efficient stable, includes the following steps：
Material to be processed is transferred in conveying device by engineering machinery, then closed conveying to indirect thermal desorption device
In material cavity, the material cavity is heated using high-temperature flue gas, gradually rises temperature of charge to be processed, by liquid phase therein
It is vaporized volatilization, realizes and is separated by solid-liquid separation, obtains the gas phase containing dust and solid-phase material up to standard, solid-phase material up to standard passes through
It is transported to specified storage point after cooling to be stored, reheating heating is carried out to the gas phase containing dust using external high-temperature flue gas
Processing is dusted purification containing dust gas phase after heating, and the solid-phase dust isolated carries out closed storage, purified gas
Heat exchange condensation is mutually carried out, liquid phase is collected and is completely separated using density contrast, the liquid phase after separation carries out system reuse or conveying
It is stored to specified storage point.
As shown in Figure 1, the invention also discloses a kind of indirect thermal desorption processing systems of the continous way of efficient stable, including into
Expect device, indirect thermal desorption device, gas reheating device, dust-extraction unit, dust collection transfer device, gas condensing unit, liquid
Phase-separating device, exhaust gas cleaner, radiator, solid phase cooling discharge device.
Indirect thermal desorption device includes the heating chamber for holding the material cavity for the treatment of material and heating to material cavity, heating chamber
Gas inlet connection high-temperature flue gas generating device, the import of material cavity is connected with feeding device；Treating material is in object
Expect intracavitary heat temperature raising, vaporization volatilization, the gas that the gas phase containing dust volatilized passes through material cavity occur for liquid phase therein
Outlet enters in gas reheating device；Remaining solid-phase material up to standard enters cooling discharge device by the solid outlet of material cavity
Specified storage point was photographed after middle cooling processing.
The outlet of gas reheating device is connected with the air inlet of dust-extraction unit, the gas containing dust after reheating heats up
Gaseous phase outlet of the clean gas phase by secondary ash collector is obtained after mutually passing sequentially through primary dust removing device and two-stage dust removal device
It enters in gas condensing unit, the dust isolated is transported in closed storage tank by the solid-phase outlet of deduster.
The liquid-phase outlet of gas condensing unit is connected with the import of liquid phase separating device, gaseous phase outlet and exhaust gas cleaner
Import be connected；Purified gas phase is condensed into liquid phase and fixed gas in gaseous phase condensing device, and liquid phase is in liquid phase separating device
It is inside completely separated, the liquid phase after separation is respectively delivered to specified storage tank and is individually stored or carried out system reuse, no
Solidifying gas is handled by exhaust gas cleaner carries out uniform effluent.
The import of radiator is connected with the liquid-phase outlet of gaseous phase condensing device, and the outlet of radiator and vapor condensation fill
The fluid inlet set is connected.
Solid phase cooling discharge device fluid inlet can both be connected with the outlet of liquid phase separating device, can also with it is external
Water source is connected, and switches over control by valve.
Claims (11)
1. a kind of continous way indirect thermal desorption processing method of efficient stable, which is characterized in that this approach includes the following steps：
Material to be processed is transferred to feeding device by engineering machinery；
Streams closed to be processed is transported in the material cavity of indirect thermal desorption device by feeding device；
The heating chamber is heated using the high-temperature flue gas that fuel combustion generates, the liquid phase in material is made to vaporize volatilization, is realized solid
Liquid separation, obtains the gas phase containing dust and solid-phase material up to standard, and solid-phase material up to standard is transported to by the discharge device that cools down
Specified storage point；
The high-temperature flue gas generated using fuel combustion carries out the gas phase containing dust of generation to continue heating heating；
The gas phase containing dust after heating heating separates solid-phase dust therein by dust-extraction unit, obtains clean gas phase；
Purified gas phase carries out condensation collection, and uncooled gas phase carries out qualified discharge after carrying out deep purifying processing；
The liquid phase that condensation is collected is completely separated using density contrast, and the liquid phase after separation carries out system reuse or is transported to specified
Place is stored.
2. a kind of indirect thermal desorption processing system of the continous way of efficient stable, which is characterized in that de- including feeding device, indirect thermal
Adsorption device, gas reheating device, dust-extraction unit, dust collection transfer device, gas condensing unit, liquid phase separating device, tail gas
Purification device, radiator, solid phase cooling discharge device；
The indirect thermal desorption device includes material cavity and heating chamber, and the import of the material cavity is connected with feeding device, described
The import of heating chamber is connected with the generating device of high-temperature flue gas, and the outlet of the heating chamber is connected with exclusive chimney；
The heat source import of the gas reheating device is connected with the outlet of external heat source, the thermal source outlet of the gas reheating device
It is connected with the import of external heat source, the air inlet of the gas reheating device is connected with the gaseous phase outlet of indirect thermal desorption device；
The dust-extraction unit import is connected with the gas outlet of gas reheating device, the dust collection transfer device and dust-extraction unit
Dust outlet be connected；
The gaseous phase condensing device is connected with the gaseous phase outlet of dust-extraction unit, the liquid phase separating device and gaseous phase condensing device
Liquid-phase outlet is connected, and the exhaust gas cleaner is connected with the gaseous phase outlet of gaseous phase condensing device；
The import of the radiator is connected with the liquid-phase outlet of gaseous phase condensing device, and the outlet of the radiator and gas phase are cold
The fluid inlet of solidifying device is connected；
The solid phase cooling discharge device is connected with the outlet of the material cavity of indirect thermal desorption device.
3. a kind of indirect thermal desorption processing system of the continous way of efficient stable according to claim 2, which is characterized in that institute
The gas reheating device stated is heated in the way of indirect heat exchange to gas by external heat source.
4. a kind of indirect thermal desorption processing system of the continous way of efficient stable according to claim 3, which is characterized in that institute
The external heat source heat source stated includes in the high-temperature flue gas generated using coal, coal gas, oil or natural gas as fuel combustion or electric heating
It is a kind of.
5. a kind of indirect thermal desorption processing system of the continous way of efficient stable according to claim 2, which is characterized in that institute
The dust-extraction unit stated includes primary dust removing device and two-stage dust removal device.
6. a kind of indirect thermal desorption processing system of the continous way of efficient stable according to claim 5, which is characterized in that institute
The primary dust removing device stated includes one of gravity settling chamber or cyclone dust collectors.
7. a kind of indirect thermal desorption processing system of the continous way of efficient stable according to claim 5, which is characterized in that institute
The two-stage dust removal device stated includes one of high-temperature resistant bagged dust collector, ceramic filter or metal film filter.
8. a kind of indirect thermal desorption processing system of the continous way of efficient stable according to claim 7, which is characterized in that institute
The two-stage dust removal device stated carries out deashing using the anti-Purge methods of pulsed.
9. a kind of indirect thermal desorption processing system of the continous way of efficient stable according to claim 2, which is characterized in that institute
The gas condensing unit stated includes the combination of one or both of direct spraying condensation type or indirect heat exchange type condensation.
10. a kind of indirect thermal desorption processing system of the continous way of efficient stable according to claim 2, which is characterized in that
The exhaust gas cleaner includes one of low-temperature adsorption, high-temperature oxidation or burning or multiple combinations.
11. a kind of indirect thermal desorption processing system of the continous way of efficient stable according to claim 2, which is characterized in that
The water or external water that the solid cooling discharge device is isolated using liquid phase separating device carry out spraying cooling cooling processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810501088.3A CN108817025A (en) | 2018-05-23 | 2018-05-23 | A kind of the continous way indirect thermal desorption processing method and system of efficient stable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810501088.3A CN108817025A (en) | 2018-05-23 | 2018-05-23 | A kind of the continous way indirect thermal desorption processing method and system of efficient stable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108817025A true CN108817025A (en) | 2018-11-16 |
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| CN201810501088.3A Pending CN108817025A (en) | 2018-05-23 | 2018-05-23 | A kind of the continous way indirect thermal desorption processing method and system of efficient stable |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103272838A (en) * | 2013-05-27 | 2013-09-04 | 浙江大学 | Method and device for repairing contaminated soil with persistent organic pollutants |
| CN104226681A (en) * | 2014-09-17 | 2014-12-24 | 杭州大地环保工程有限公司 | Device and method for indirect thermal desorption disposal of persistent organic pollutant contaminated soil |
| CN104289513A (en) * | 2014-10-14 | 2015-01-21 | 中节能大地环境修复有限公司 | Device and method applied to thermal desorption treatment of mercury-contaminated soil |
| CN104906876A (en) * | 2015-06-01 | 2015-09-16 | 杭州大地环保工程有限公司 | Tail gas purification method and device for thermal desorption of organic contaminated soil |
| CN107485949A (en) * | 2017-09-11 | 2017-12-19 | 中国环境科学研究院 | The exhaust gas treating method and device of indirect thermal desorption renovation of organic pollution soil |
-
2018
- 2018-05-23 CN CN201810501088.3A patent/CN108817025A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103272838A (en) * | 2013-05-27 | 2013-09-04 | 浙江大学 | Method and device for repairing contaminated soil with persistent organic pollutants |
| CN104226681A (en) * | 2014-09-17 | 2014-12-24 | 杭州大地环保工程有限公司 | Device and method for indirect thermal desorption disposal of persistent organic pollutant contaminated soil |
| CN104289513A (en) * | 2014-10-14 | 2015-01-21 | 中节能大地环境修复有限公司 | Device and method applied to thermal desorption treatment of mercury-contaminated soil |
| CN104906876A (en) * | 2015-06-01 | 2015-09-16 | 杭州大地环保工程有限公司 | Tail gas purification method and device for thermal desorption of organic contaminated soil |
| CN107485949A (en) * | 2017-09-11 | 2017-12-19 | 中国环境科学研究院 | The exhaust gas treating method and device of indirect thermal desorption renovation of organic pollution soil |
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Application publication date: 20181116 |