CN202447366U - Equipment for repairing soil polluted by hardly volatile organics - Google Patents
Equipment for repairing soil polluted by hardly volatile organics Download PDFInfo
- Publication number
- CN202447366U CN202447366U CN2012200631344U CN201220063134U CN202447366U CN 202447366 U CN202447366 U CN 202447366U CN 2012200631344 U CN2012200631344 U CN 2012200631344U CN 201220063134 U CN201220063134 U CN 201220063134U CN 202447366 U CN202447366 U CN 202447366U
- Authority
- CN
- China
- Prior art keywords
- soil
- pipeline
- machine
- pretreatment
- rotary kiln
- Prior art date
Links
- 239000002689 soil Substances 0.000 title claims abstract description 72
- 238000006243 chemical reactions Methods 0.000 claims abstract description 32
- 239000007789 gases Substances 0.000 claims abstract description 29
- 238000007254 oxidation reactions Methods 0.000 claims abstract description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound 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[C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000000428 dust Substances 0.000 claims description 24
- 238000000034 methods Methods 0.000 claims description 11
- 210000001736 Capillaries Anatomy 0.000 claims description 3
- 238000005859 coupling reactions Methods 0.000 claims description 3
- 230000026676 system process Effects 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 239000011901 water Substances 0.000 abstract description 3
- 229910052799 carbon Inorganic materials 0.000 abstract 3
- 239000000779 smoke Substances 0.000 abstract 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N carbon monoxide Chemical compound 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- 238000006479 redox reactions Methods 0.000 description 1
- 238000005067 remediation Methods 0.000 description 1
- 230000000630 rising Effects 0.000 description 1
Abstract
Description
Technical field
The utility model relates to the prosthetic appliance of contaminated soil, specifically is the prosthetic appliance of the difficult volatility contaminated soil of a kind of industrial pollutants place high concentration.
Background technology
The general using thermal desorption technology of carrying out of organic type of contaminated soil repair of the difficult volatilization of present industrial place high concentration is carried out; Generally heating makes organic pollution evaporate into the redox chamber to contaminated soil through rotary kiln; Adding heat-flash in the redox chamber more at high temperature decomposes it; Directly make high-temperature tail gas be reduced to uniform temperature at last, directly be thrown among the atmosphere through after other a series of processing again with cooling device.This method can be good at being used among the higher contaminated site soil remediation work of organic pollution content, but its open defect is also arranged, and promptly energy consumption is high, and treatment effeciency and heat energy utilization rate are low, makes that the cost of contaminated soil repair is high.
Summary of the invention
The purpose of the utility model is to solve energy consumption height, treatment effeciency and the low problem of heat energy utilization rate that exists in the prior art, and the utility model provides the prosthetic appliance of organic type of contaminated soil of a kind of difficult volatilization.
For realizing above-mentioned purpose; The technical scheme that the utility model adopts is: the prosthetic appliance of organic type of contaminated soil of a kind of difficult volatilization; Comprise the rotary kiln, cyclone dust collectors, soil pretreatment system, oxidation reaction pond, activated carbon adsorber and the chimney that connect successively through pipeline
Described soil pretreatment system comprises process chamber, and inner treatment chamber is provided with the pretreatment system discharge duct, and the pretreatment system discharge duct is provided with steam vent, and the process chamber upper end connects soil pretreatment system gas skirt;
Described redox reaction pond comprises reaction tank, and reaction tank inside is provided with the reaction tank discharge duct, and the reaction tank discharge duct is provided with exhaust capillary, coupled reaction pond, reaction tank upper end gas skirt;
The sidewall upper of cyclone dust collectors connect rotary kiln exhanst gas outlet; The lower end of cyclone dust collectors is provided with the dust outlet; The top of cyclone dust collectors is connected with soil pretreatment system chamber bottom through pipeline; Soil pretreatment system gas skirt is connected with the reaction tank in oxidation reaction pond through pipeline, and the reaction tank gas skirt is connected with the charcoal absorption tower bottom through pipeline, and the activated carbon adsorber top is connected with chimney through pipeline.
The described equipment of the utility model is that the high-temperature flue gas that thermal desorption in the rotary kiln comes out is introduced the contaminated soil pretreatment system after the process dedusting; Utilize high-temperature flue gas that the difficult volatilization of high concentration soil is carried out preliminary treatment; Make the moisture content in the soil be significantly reduced; The height of the moisture content in the soil is the factor of determination of energy consumption in the thermal desorption technology, and the water content reduction can effectively cut down the consumption of energy.Improved the temperature of pending soil simultaneously; And the direct desorption of effumability organic pollution in the soil is come out; The gas that volatilizes be introduced into the oxidation reaction pond through series reaction such as peroxide decomposition after activated carbon adsorber absorption is discharged by chimney, then be admitted to rotary kiln through the soil of rising temperature after the preliminary treatment and do further processing again.
Compared with prior art, the prosthetic appliance of organic type of contaminated soil of the described difficult volatilization of the utility model is that the high-temperature flue gas after the cyclone dust removal is drawn it before cooling processing, is used for preliminary treatment soil; Reduce soil moisture content, improve the pending soil moisture, and isolate the effumability organic pollutant; The heat that high-temperature flue gas is carried is able to utilize again; Improved the heat energy utilization rate, this cover system utilizes the oxidation reaction principle to decompose the removal dusty gas simultaneously, and the cost of having avoided utilizing the heat of high temperature decomposing organic pollutant to be brought once more sharply increases problem; Make that this cover system can be when guaranteeing repairing effect; Avoid causing secondary to dye, can improve heat utilization ratio, reduce the contaminated soil treatment cost, improved treatment effeciency greatly environment.
Description of drawings
Fig. 1 is the structural representation of the prosthetic appliance of organic type of contaminated soil of the difficult volatilization of the utility model.
Fig. 2 is the structural representation of the utility model rotary kiln and charging/discharging device.
Fig. 3 is the structural representation of soil pretreatment system.
Fig. 4 is the structural representation in oxidation reaction pond.
The 1-rotary kiln, 2-cyclone dust collectors, 3-soil pretreatment system, 4-oxidation reaction pond, 5-activated carbon adsorber; The 6-chimney, 7-first air-introduced machine, 8-second air-introduced machine, 9-the 3rd air-introduced machine, 10-feed belt machine; 11-outfeed belt machine, 12-feed auger device, 31-process chamber, 32-soil pretreatment system discharge duct; 33-soil pretreatment system gas skirt, 41-reaction tank, 42-reaction tank discharge duct, 43-reaction tank gas skirt.
The specific embodiment
Below in conjunction with accompanying drawing the described technical scheme of the utility model is done and to be specified.
As shown in Figure 1, the prosthetic appliance of organic type of contaminated soil of the described a kind of difficult volatilization of the utility model comprises the rotary kiln 1, cyclone dust collectors 2, soil pretreatment system 3, oxidation reaction pond 4, activated carbon adsorber 5 and the chimney 6 that connect successively through pipeline.
As shown in Figure 2, rotary kiln 1 is a High-temp. kiln, and rotary kiln is connected with reductor, and reductor connects variable-frequency motor, and the rotary kiln front end is provided with feed belt machine 10, and the rear end is provided with outfeed belt machine 11, is provided with feed auger device 12 between rotary kiln 1 and the feed belt machine 10.The soil that feed auger device 12 is carried belt feeder pushes rotary kiln 1; Through regulating the rotating speed that the variable-frequency motor frequency drives reductor control stove; Thereby make soil thermally equivalent in the kiln, volatilization and half volatile organic contaminant are able to rapid volatilization through the controllable temperature combustor to heating in the kiln in the soil.
As shown in Figure 3; Described soil pretreatment system 3 comprises process chamber 31; Process chamber 31 inside are provided with soil pretreatment system discharge duct 32, and soil pretreatment system discharge duct 32 is provided with steam vent, and process chamber 31 upper ends connect soil pretreatment system gas skirt 33.The high-temperature flue gas that cyclone dust collectors come out gets into the soil pretreatment system the difficult volatility soil of high concentration is heated, purges.The soil that the hydraulic pressure strut is housed can be set on pretreatment system discharge duct 32 display device, can automatically the soil of handling well be toppled over and the contaminated soil treatment system, leave outlet on the seal closure of process chamber 31 upper ends, outlet conduit is connected with second air-introduced machine.
As shown in Figure 4, described oxidation reaction pond 4 comprises reaction tank 41, and reaction tank 41 inside are provided with reaction tank discharge duct 42, and reaction tank discharge duct 42 is provided with exhaust capillary, coupled reaction pond, reaction tank 41 upper end gas skirt 43.In the oxidation reaction pond 4 reactant liquor is housed; Reactant liquor is selected according to the kind of organic pollution; Generally select Fenton reagent for use, i.e. the compound of hydrogen peroxide and iron (divalence), pollutant can be degraded through direct chemical reaction or hydroxyl radical free radical effectively and rapidly.
Cyclone dust collectors are used for reducing the flue gas dust content; The sidewall upper of cyclone dust collectors 2 connect rotary kiln 1 exhanst gas outlet; The lower end of cyclone dust collectors 2 is provided with the dust outlet, and the top of cyclone dust collectors 2 is connected with soil pretreatment system process chamber 31 bottoms through pipeline.Soil pretreatment system gas skirt 33 is connected with the reaction tank 41 in oxidation reaction pond 4 through pipeline, and reaction tank gas skirt 43 is connected with activated carbon adsorber 5 bottoms through pipeline, and activated carbon adsorber 5 tops are connected with chimney 6 through pipeline.
First air-introduced machine 7 is housed on the pipeline between cyclone dust collectors 2 and the soil pretreatment system 3; Second air-introduced machine 8 is housed on the pipeline between soil pretreatment system 3 and the oxidation reaction pond 4, the 3rd air-introduced machine 9 is housed on the pipeline between activated carbon adsorber 5 and the chimney 6.
Described first air-introduced machine 7 adopts high temperature frequency conversion air-introduced machine; The high-temperature flue gas that first air-introduced machine 7 will come out from rotary kiln 1 is introduced cyclone dust collectors 2; The power of regulating high temperature frequency conversion air-introduced machine is regulated the size and the temperature of the exhaust gas volumn of coming out from cyclone dust collectors 2, and high temperature frequency conversion air-introduced machine also is used for the stream of gas in the control system simultaneously.
Be sent in the rotary kiln through pretreated soil in the soil pretreatment system 3; Through high temperature rotation heating; Come out by 11 transportations of outfeed belt machine, the high-temperature flue gas that evaporates in the kiln body is inhaled into cyclone dust collectors 2 and removes dust, sends into soil pretreatment system 1 through first air-introduced machine 7 then; The heat that high-temperature flue gas carries is able to utilize at this again; Dusty gas after energy is utilized is then sent into 4 bottoms, oxidation reaction pond through second air-introduced machine 8, then gets into activated carbon adsorber 5 once more after dusty gas is degraded and carry out the physics reparation in oxidation reaction pond 4, is degraded fully to guarantee dusty gas.The gas that activated carbon adsorber 5 emits is discharged by chimney 6 through the 3rd air-introduced machine 9, and the 3rd air-introduced machine 9 also is used for controlling the trend of being discharged gas by oxidation reaction pond 4.
Claims (4)
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CN2012200631344U CN202447366U (en) | 2012-02-27 | 2012-02-27 | Equipment for repairing soil polluted by hardly volatile organics |
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CN2012200631344U CN202447366U (en) | 2012-02-27 | 2012-02-27 | Equipment for repairing soil polluted by hardly volatile organics |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102580994A (en) * | 2012-02-27 | 2012-07-18 | 山西省环境科学研究院 | Remediation equipment for non-volatile organic polluted soil |
CN102962249A (en) * | 2012-10-10 | 2013-03-13 | 北京中科通用能源环保有限责任公司 | Remediation system and method for contaminated soil |
CN105834204A (en) * | 2016-05-12 | 2016-08-10 | 贵州省环境科学研究设计院 | Soil mercury removing system |
-
2012
- 2012-02-27 CN CN2012200631344U patent/CN202447366U/en not_active IP Right Cessation
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102580994A (en) * | 2012-02-27 | 2012-07-18 | 山西省环境科学研究院 | Remediation equipment for non-volatile organic polluted soil |
CN102580994B (en) * | 2012-02-27 | 2013-12-11 | 山西省环境科学研究院 | Remediation equipment for non-volatile organic polluted soil |
CN102962249A (en) * | 2012-10-10 | 2013-03-13 | 北京中科通用能源环保有限责任公司 | Remediation system and method for contaminated soil |
CN105834204A (en) * | 2016-05-12 | 2016-08-10 | 贵州省环境科学研究设计院 | Soil mercury removing system |
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AV01 | Patent right actively abandoned |
Granted publication date: 20120926 Effective date of abandoning: 20131211 |