CN202447366U - Equipment for repairing soil polluted by hardly volatile organics - Google Patents

Equipment for repairing soil polluted by hardly volatile organics Download PDF

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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
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CN
China
Prior art keywords
soil
pipeline
machine
pretreatment
rotary kiln
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CN2012200631344U
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Chinese (zh)
Inventor
党晋华
张国信
刘利军
史晓凯
向云
王竞
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山西省环境科学研究院
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Priority to CN2012200631344U priority Critical patent/CN202447366U/en
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Publication of CN202447366U publication Critical patent/CN202447366U/en

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Abstract

The utility model aims to solve the problems of high energy consumption, low processing efficiency and low heat energy utilization rate in the prior art, and provides equipment for repairing soil polluted by hardly volatile organics. The equipment comprises a rotary kiln, a cyclone deduster, a soil pretreatment system, an oxidization reaction pool, an active carbon adsorption tower and a chimney, which are connected in sequence through a pipeline, wherein the upper end of the side wall of the cyclone deduster is connected with a smoke outlet of the rotary kiln, the top end of the cyclone deduster is connected with the bottom of a treatment chamber of the soil pretreatment system through a pipeline, a gas collecting hood of the soil pretreatment system is connected with a reaction pool of the oxidization reaction pool through a pipeline, a gas collecting hood of the reaction pool is connected with the bottom of the active carbon adsorption tower through a pipeline, and the top end of the active carbon adsorption tower is connected with the chimney through a pipeline. According to the utility model, high-temperature smoke subjected to cyclone dedusting is used to pre-treat soil before being cooled so as to reduce water content of water, raise the temperature of the soil and separate volatile organic pollution gas, so that heat carried by the smoke is reutilized, and the heat energy utilization rate is increased.

Description

The prosthetic appliance of organic type of contaminated soil of difficult volatilization

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)

1. the prosthetic appliance of organic type of contaminated soil of a difficult volatilization; It is characterized in that: comprise 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
Described soil pretreatment system (3) comprises process chamber (31); Process chamber (31) inside is provided with soil pretreatment system discharge duct (32); Soil pretreatment system discharge duct (32) is provided with steam vent, and process chamber (31) upper end connects soil pretreatment system gas skirt (33);
Described oxidation reaction pond (4) comprises reaction tank (41), and reaction tank (41) inside is provided with reaction tank discharge duct (42), and reaction tank discharge duct (42) is provided with exhaust capillary, reaction tank (41) upper end coupled reaction pond gas skirt (43);
The sidewall upper of cyclone dust collectors (2) connect rotary kiln (1) exhanst gas outlet; The top of cyclone dust collectors (2) is connected with soil pretreatment system process chamber (31) bottom through pipeline; Soil pretreatment system gas skirt (33) is connected with the reaction tank (41) of oxidation reaction pond (4) through pipeline; Reaction tank gas skirt (43) is connected with activated carbon adsorber (5) bottom through pipeline, and activated carbon adsorber (5) top is connected with chimney (6) through pipeline.
2. the prosthetic appliance of organic type of contaminated soil of difficult volatilization according to claim 1; It is characterized in that: on the pipeline between cyclone dust collectors (2) and the soil pretreatment system (3) first air-introduced machine (7) is housed; On the pipeline between soil pretreatment system (3) and oxidation reaction pond (4) second air-introduced machine (8) is housed, on the pipeline between activated carbon adsorber (5) and the chimney (6) the 3rd air-introduced machine (9) is housed.
3. the prosthetic appliance of organic type of contaminated soil of difficult volatilization according to claim 2, it is characterized in that: described first air-introduced machine (7) adopts high temperature frequency conversion air-introduced machine.
4. according to the prosthetic appliance of claim 1 or organic type of contaminated soils of 2 or 3 described difficult volatilizations; It is characterized in that: rotary kiln (1) is connected with reductor; Reductor connects variable-frequency motor; Rotary kiln (1) 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 feed belt (10) machine.
CN2012200631344U 2012-02-27 2012-02-27 Equipment for repairing soil polluted by hardly volatile organics CN202447366U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012200631344U CN202447366U (en) 2012-02-27 2012-02-27 Equipment for repairing soil polluted by hardly volatile organics

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012200631344U CN202447366U (en) 2012-02-27 2012-02-27 Equipment for repairing soil polluted by hardly volatile organics

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Publication Number Publication Date
CN202447366U true CN202447366U (en) 2012-09-26

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Cited By (3)

* Cited by examiner, † Cited by third party
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

Cited By (4)

* Cited by examiner, † Cited by third party
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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Granted publication date: 20120926

Effective date of abandoning: 20131211