CN104289066B - Thermal desorption tail gas high-temperature dust removing device - Google Patents
Thermal desorption tail gas high-temperature dust removing device Download PDFInfo
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- CN104289066B CN104289066B CN201410542700.3A CN201410542700A CN104289066B CN 104289066 B CN104289066 B CN 104289066B CN 201410542700 A CN201410542700 A CN 201410542700A CN 104289066 B CN104289066 B CN 104289066B
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Abstract
The invention discloses a kind of thermal desorption tail gas high-temperature dust removing device, this device includes high-temperature cyclone dust extractor, high-temperature bag pulse dust collector, high-temperature-resistant gas pipeline, elevated temperature desorption tail gas is carried out primary dust removing by high-temperature cyclone dust extractor, then pass through high-temperature-resistant gas pipeline entrance high-temperature bag pulse dust collector and carry out two-stage dust removal, through the thermal desorption tail gas dust clearance of two grades of high-temperature dust removals up to more than 99%, the solid particle in the desorption tail gas more than 0.2 μm can be removed.
Description
Technical field
The present invention relates to a kind of thermal desorption tail gas high-temperature dust removing device.
Background technology
Contaminated soil thermal desorption treatment technology is to adopt direct or indirect heat exchange method, after contaminated soil being heated to sufficiently high temperature and keeping a period of time, makes pollutant volatilization the process separated from contaminated soil.The desorption tail gas that thermal desorption processing procedure produces contains solid particulate matter, gaseous contaminant and water etc., has temperature height, water content height and dustiness high, it need to be carried out process and reach relevant emission standards.After the processing method of desorption tail gas is generally adopted wet dust removal or common bag-type dusting, then cool down.Above-mentioned processing method there is problems in that desorption tails dedusting weak effect；In condensed water, pollutant levels are high, dustiness is high；Tails dedusting and follow-up tail gas cooling system easily block, and the difficulty of subsequent wastewater treatment increases with processing load.
At present, have the patent of the aspects such as contaminated soil thermal desorption processing method, system, but for the process of elevated temperature desorption tail gas, not yet proposing can solution to the problems described above.
Summary of the invention
It is an object of the invention to for the deficiencies in the prior art, it is provided that a kind of thermal desorption tail gas high-temperature dust removing device.
It is an object of the invention to be achieved through the following technical solutions, a kind of thermal desorption tail gas high-temperature dust removing device, this device includes high-temperature cyclone dust extractor, high-temperature bag pulse dust collector, high-temperature-resistant gas pipeline, and described high-temperature cyclone dust extractor includes the first flue-dust retainer, the first unloading valve, the first ash-falling chamber, the first support, the first separation chamber and exhaust core pipe；First support is arranged on the first both sides, separation chamber, first separation chamber, the first ash-falling chamber, the first unloading valve, the first flue-dust retainer are sequentially connected with from top to bottom, exhaust core pipe is arranged on the top of the first separation chamber, exhaust core pipe top has the first gas outlet, the top of first separation chamber's sidewall has the first air inlet, and the first air inlet place is connected to the air inlet pipe that the tangential direction along first separation chamber's sidewall is arranged；Described high-temperature bag pulse dust collector includes the second flue-dust retainer, the second unloading valve, the second ash-falling chamber, the second support, the second separation chamber, compression air bag, impulse electromagnetic valve, compressed air hose, high temperature resistant defecator and dividing plate；Second support is arranged on the second both sides, separation chamber, second flue-dust retainer, the second unloading valve, the second ash-falling chamber, the second separation chamber are sequentially connected with from top to bottom, dividing plate is arranged on the second top, separation chamber, second separation chamber is divided into upper and lower two parts, top is divided into air-purifying chamber, and the side of air-purifying chamber has the second gas outlet；Having multiple passage on dividing plate, passage is installed below Venturi tube, and Venturi tube lower end connects high temperature resistant defecator；Airtight connection between passage, Venturi tube, high temperature resistant defecator；Compression air bag is arranged on outside the second separation chamber, and compression air bag is arranged above multiple impulse electromagnetic valve, and compressed air hose is through the barrel of the second separation chamber, and one end connects Venturi tube upper port, and the other end connects impulse electromagnetic valve；The downside of the second separation chamber has the second air inlet；Described high-temperature-resistant gas pipeline one end connects the first gas outlet, and the other end connects the second air inlet.
Further, described high-temperature cyclone dust extractor, high-temperature bag pulse dust collector, high-temperature-resistant gas pipeline are coated with by insulation material.
Further, described insulation material is selected from rock wool, aluminosilicate fiber cotton, and thickness is 50～100mm.
Further, described high temperature resistant defecator is made by 316L rustless steel mesh grid, and aperture is 0.2～0.4 μm.
Further, described high temperature resistant defecator can also to be pore size filter the be refractory ceramics filter tube of 1.0～2.0 μm.
Further, described first air inlet is provided with gas-monitoring unit, described gas-monitoring unit includes baroceptor, Flow speed measurer, temperature sensor, power supply and display device, described power supply is connected with baroceptor, Flow speed measurer, temperature sensor and display device, and baroceptor, Flow speed measurer, temperature sensor are connected with display device respectively.
Compared to prior art, it is an advantage of the current invention that: 1. exhaust temperature in cleaner unit can be avoided to reduce and make water vapor condensation blocking cleaner unit and gas pipeline；2. it is prevented effectively from follow-up tail gas cooling unit chiller and blocking effect that gas pipeline occurs because of dust；3. can reduce suspended solid (SS) content in the condensed water of tail gas coolant flat, reduce condensed water intractability；4., in the tail gas cooling procedure that dedusting is follow-up, can avoid again being adsorbed by the solid particle tail gas from contaminated soil desorption gaseous contaminant out.
Accompanying drawing explanation
Fig. 1 is that equipment is always schemed；
Fig. 2 is high-temperature cyclone dust extractor structure chart；
Fig. 3 is high-temperature bag pulse dust collector structure chart；
Fig. 4 is the sectional view of high-temperature bag pulse dust collector；
Fig. 5 is airflow direction schematic diagram during elevated temperature desorption tail gas entrance high-temperature cyclone dust extractor；
Fig. 6 is the annexation schematic diagram of compressed air hose.
Wherein: 1-high-temperature cyclone dust extractor, 2-high-temperature-resistant gas pipeline, 3-high-temperature bag pulse dust collector, 4-the first flue-dust retainer, 5-the first unloading valve, 6-the first ash-falling chamber, 7-the first support, 8-the first separation chamber, 9-exhaust core pipe, 10-the first air inlet, 11-the first gas outlet, 12-the second flue-dust retainer, 13-the second unloading valve, 14-the second ash-falling chamber, 15-the second support, 16-the second separation chamber, 17-the second air inlet, 18-compresses air bag, 19-impulse electromagnetic valve, 20-compressed air hose, 22-air-purifying chamber, 23-is high temperature resistant defecator, 24-dividing plate, 25-Venturi tube.
Detailed description of the invention
As it is shown in figure 1, a kind of thermal desorption tail gas high-temperature dust removing device, this device includes high-temperature cyclone dust extractor 1, high-temperature bag pulse dust collector 3, high-temperature-resistant gas pipeline 2.
As in figure 2 it is shown, described high-temperature cyclone dust extractor 1 includes the first flue-dust retainer the 6, first support the 7, first separation chamber 8 of the 4, first unloading valve the 5, first ash-falling chamber and exhaust core pipe 9；First support 7 is arranged on the first both sides, separation chamber 8, first the 8, first ash-falling chamber of separation chamber the 6, first unloading valve the 5, first flue-dust retainer 4 is sequentially connected with from top to bottom, exhaust core pipe 9 is arranged on the top of the first separation chamber 8, exhaust core pipe 9 top has the first gas outlet 11, the top of the first separation chamber 8 sidewall has the first air inlet 10, and the first air inlet 10 place is connected to the air inlet pipe (such as Fig. 5) arranged along the first separation chamber 8 sidewall tangential direction.
As shown in Figures 3 and 4, described high-temperature bag pulse dust collector 3 includes second the 14, second support the 15, second separation chamber 16 of flue-dust retainer the 12, second unloading valve the 13, second ash-falling chamber, compression air bag 18, impulse electromagnetic valve 19, compressed air hose 20, high temperature resistant defecator 23 and dividing plate 24；Second support 15 is arranged on the second both sides, separation chamber 16, second the 14, second separation chamber 16 of flue-dust retainer the 12, second unloading valve the 13, second ash-falling chamber is sequentially connected with from top to bottom, dividing plate 24 is arranged on the second top, separation chamber 16, second separation chamber 16 is divided into upper and lower two parts, top is divided into air-purifying chamber 22, and the side of air-purifying chamber 22 has the second gas outlet；Having multiple passage on dividing plate 24, passage is installed below Venturi tube 25, and Venturi tube 25 lower end connects high temperature resistant defecator 23；Airtight connection between passage, Venturi tube 25, high temperature resistant defecator 23；Compression air bag 18 is arranged on outside the second separation chamber 16, and compression air bag 18 is arranged above the impulse electromagnetic valve 19 of high temperature resistant defecator 23 same number, and each impulse electromagnetic valve 19 is mounted on compressed air hose 20；Compressed air hose 20 is through the barrel of the second separation chamber 16, and one end connects the upper port of Venturi tube 25, and the other end connects the upper end (as shown in Figure 6) of impulse electromagnetic valve 19；The downside of the second separation chamber 16 has the second air inlet 17；Described high-temperature-resistant gas pipeline 2 one end connects the first gas outlet 11, and the other end connects the second air inlet 17.
Described high-temperature cyclone dust extractor 1, high-temperature bag pulse dust collector 3, high-temperature-resistant gas pipeline 2 are coated with by insulation material.To prevent heat in tail gas excessive and to protect the personal safety of operator.
Described insulation material is selected from rock wool, aluminosilicate fiber cotton, and thickness is 50～100mm.
Described high temperature resistant defecator 23 is made by 316L rustless steel mesh grid, and aperture is 0.2～0.4 μm.Can also to be pore size filter the be refractory ceramics filter tube of 1.0～2.0 μm, the elimination diameter dust more than 0.2 μm.
Described first air inlet 10 is provided with gas-monitoring unit, described gas-monitoring unit includes baroceptor, Flow speed measurer, temperature sensor, power supply and display device, described power supply is connected with baroceptor, Flow speed measurer, temperature sensor and display device, and baroceptor, Flow speed measurer, temperature sensor are connected with display device respectively.Detection enters the parameters such as the flow velocity of the elevated temperature desorption tail gas of the first air inlet 10.
The work process of thermal desorption tail gas high-temperature dust removing device is as follows:
(1) the first air inlet 10 is connected with thermal desorption device by pipeline；
(2) the elevated temperature desorption tail gas that contaminated soil produces in thermal desorption device enters high-temperature cyclone dust extractor 1 by the first air inlet 10 along the tangential direction (as shown in Figure 4) of the first separation chamber 8 sidewall, and elevated temperature desorption tail gas is monitored according to the air pressure of display, flow velocity, temperature on display device and regulates by staff；Elevated temperature desorption tail gas spirally from top to bottom moves to the first unloading valve 5 bottom conical first ash-falling chamber 6, from first the 8 to the first ash-falling chamber of separation chamber 6, form the outward turning dust-contained airflow declined, the grit that density is far longer than gas by produced centrifugal force in strong rotary course gets rid of the wall to the first separation chamber 8 and the first ash-falling chamber 6, grit is once contact with wall, just lose inertia force, and the momentum and the gravity of self by entrance velocity drops to the first unloading valve 5 hence into the first flue-dust retainer 4 along wall.
Rotating the air-flow declined to arrive after bottom the first ash-falling chamber 6, the axis part along high-temperature cyclone dust extractor 1 is transferred upwards, forms the interior rotational gas flow risen, and is discharged by the first gas outlet 11.
Desorption tail gas through the pre-dedusting of high-temperature cyclone dust extractor 1 is entered high-temperature bag pulse dust collector 3 by high-temperature-resistant gas pipeline 2 by the second air inlet 17, desorption tail gas is after high temperature filtration device 23 filters, by Venturi tube 25 and passage, until the air-purifying chamber 22 on dividing plate 24 top；After high temperature filtration device 23 filters, the solid particle more than 0.2 μm is blocked in outside high temperature resistant filter bag, and the residue small part solid particle less than 0.2 μm enters air-purifying chamber 22 with the tail gas after filtering, then flows out high-temperature bag pulse dust collector 3.Solid particle is too much enriched in filter bag surface can cause that gas filtration resistance is greatly increased, affect the properly functioning of cleaner unit, need regularly it to be carried out deashing, specifically can pass through timing and trigger impulse electromagnetic valve 19 in order, by compressed air piping 20 and Venturi tube 25 is instantaneous is ejected in corresponding high temperature resistant filter bag 23 to make compression air in compression air bag 18, high temperature resistant filter bag 23 sharply expands under air-flow moment back action, make to amass and be attached to the dust releasing of filter bag outer surface and fall to flue-dust retainer, the long-pending dust being attached on filter bag is had pulse jet periodically to remove, ensure that dust pelletizing system is properly functioning.
(3) tail gas after purifying enters air-purifying chamber 22, then gets rid of from the second gas outlet, completes the purification of elevated temperature desorption tail gas.Through the thermal desorption tail gas dust clearance of two grades of high-temperature dust removals up to more than 99%, the soil particle more than 0.2 μm can be removed.
Claims (6)
1. a thermal desorption tail gas high-temperature dust removing device, it is characterized in that, this device includes high-temperature cyclone dust extractor (1), high-temperature bag pulse dust collector (3), high-temperature-resistant gas pipeline (2), it is characterised in that: described high-temperature cyclone dust extractor (1) includes the first flue-dust retainer (4), the first unloading valve (5), the first ash-falling chamber (6), the first support (7), the first separation chamber (8) and exhaust core pipe (9)；First support (7) is arranged on the first separation chamber (8) both sides, first separation chamber (8), the first ash-falling chamber (6), the first unloading valve (5), the first flue-dust retainer (4) are sequentially connected with from top to bottom, exhaust core pipe (9) is arranged on the top of the first separation chamber (8), exhaust core pipe (9) top has the first gas outlet (11), the top of the first separation chamber (8) sidewall has the first air inlet (10), and the first air inlet (10) place is connected to the air inlet pipe that the tangential direction along the first separation chamber (8) sidewall is arranged；Described high-temperature bag pulse dust collector (3) includes the second flue-dust retainer (12), the second unloading valve (13), the second ash-falling chamber (14), the second support (15), the second separation chamber (16), compression air bag (18), impulse electromagnetic valve (19), compressed air hose (20), high temperature resistant defecator (23) and dividing plate (24)；Second support (15) is arranged on the second separation chamber (16) both sides, second flue-dust retainer (12), the second unloading valve (13), the second ash-falling chamber (14), the second separation chamber (16) are sequentially connected with from top to bottom, dividing plate (24) is arranged on the second separation chamber (16) top, second separation chamber (16) are divided into upper and lower two parts, top is divided into air-purifying chamber (22), and the side of air-purifying chamber (22) has the second gas outlet；Dividing plate has multiple passage on (24), and passage is installed below Venturi tube (25), and Venturi tube (25) lower end connects high temperature resistant defecator (23)；Airtight connection between passage, Venturi tube (25), high temperature resistant defecator (23)；Compression air bag (18) is arranged on outside, the second separation chamber (16), and compression air bag (18) is arranged above the impulse electromagnetic valve (19) identical with the number of high temperature resistant defecator (23)；Compressed air hose (20) is through the barrel of the second separation chamber (16), and one end connects Venturi tube (25) upper port, and the other end connects impulse electromagnetic valve (19) upper port；The downside of the second separation chamber (16) has the second air inlet (17)；Described high-temperature-resistant gas pipeline (2) one end connects the first gas outlet (11), and the other end connects the second air inlet (17).
2. a kind of thermal desorption tail gas high-temperature dust removing device according to claim 1, it is characterised in that: described high-temperature cyclone dust extractor (1), high-temperature bag pulse dust collector (3), high-temperature-resistant gas pipeline (2) are coated with by insulation material.
3. a kind of thermal desorption tail gas high-temperature dust removing device according to claim 2, it is characterised in that: described insulation material is selected from rock wool, aluminosilicate fiber cotton, and thickness is 50～100mm.
4. a kind of thermal desorption tail gas high-temperature dust removing device according to claim 1, it is characterised in that: described high temperature resistant defecator (23) is made by 316L rustless steel mesh grid, and aperture is 0.2～0.4 μm.
5. a kind of thermal desorption tail gas high-temperature dust removing device according to claim 1, it is characterised in that: described high temperature resistant defecator (23) is refractory ceramics filter tube that pore size filter is 1.0～2.0 μm.
6. a kind of thermal desorption tail gas high-temperature dust removing device according to claim 1, it is characterized in that, described first air inlet (10) is provided with gas-monitoring unit, described gas-monitoring unit includes baroceptor, Flow speed measurer, temperature sensor, power supply and display device, described power supply is connected with baroceptor, Flow speed measurer, temperature sensor and display device, and baroceptor, Flow speed measurer, temperature sensor are connected with display device respectively.
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| CN201410542700.3A CN104289066B (en) | 2014-10-14 | 2014-10-14 | Thermal desorption tail gas high-temperature dust removing device |
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| CN104289066B true CN104289066B (en) | 2016-06-29 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104785386A (en) * | 2015-04-22 | 2015-07-22 | 山西山原鼓风机有限责任公司 | Dedicated separator for cleaning scattered coal dust on railroad bed |
| CN107335296A (en) * | 2017-08-23 | 2017-11-10 | 江苏省宜兴非金属化工机械厂有限公司 | Novel dust collection device and its method on aluminium oxide extraction process from coal ash |
| CN110030841A (en) * | 2019-04-24 | 2019-07-19 | 广州华鑫工程技术有限公司 | Dedusting of EAF equipment and dust removal method |
| CN110124397A (en) * | 2019-05-27 | 2019-08-16 | 杨晓艺 | A kind of biomass boiler cleaning dust remover |
| CN110975428A (en) * | 2019-11-26 | 2020-04-10 | 山东浦创流体技术有限公司 | High-temperature flue gas filtering system |
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| CN203108345U (en) * | 2013-03-11 | 2013-08-07 | 重庆博山工程机械设备有限公司 | Environment-friendly, non-energy consumption, and low-cost dust removing system |
| CN204121934U (en) * | 2014-10-14 | 2015-01-28 | 中节能大地环境修复有限公司 | A kind of thermal desorption tail gas high-temperature dust removing device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004107473A (en) * | 2002-09-18 | 2004-04-08 | Jfe Steel Kk | Method and apparatus for cleaning by-product gas |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101196373A (en) * | 2007-01-25 | 2008-06-11 | 宁波金田铜业(集团)股份有限公司 | Environment friendly system for smelting copper and copper alloy |
| CN202876597U (en) * | 2012-09-27 | 2013-04-17 | 广东博德精工建材有限公司 | Multi-level dust removal system |
| CN203108345U (en) * | 2013-03-11 | 2013-08-07 | 重庆博山工程机械设备有限公司 | Environment-friendly, non-energy consumption, and low-cost dust removing system |
| CN204121934U (en) * | 2014-10-14 | 2015-01-28 | 中节能大地环境修复有限公司 | A kind of thermal desorption tail gas high-temperature dust removing device |
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