CN202143898U - Drum-type soil thermal desorption repair system - Google Patents
Drum-type soil thermal desorption repair system Download PDFInfo
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- CN202143898U CN202143898U CN201120186550U CN201120186550U CN202143898U CN 202143898 U CN202143898 U CN 202143898U CN 201120186550 U CN201120186550 U CN 201120186550U CN 201120186550 U CN201120186550 U CN 201120186550U CN 202143898 U CN202143898 U CN 202143898U
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Abstract
The utility model provides a drum-type soil thermal desorption repair system, comprising a feeding device arranged at the front end of a drum, a discharging device arranged at the rear end of the drum, a hearth, a hearth thermal insulation layer arranged at the periphery of the hearth, a drum penetrating through the hearth, a heating element arranged at the bottom of the hearth, a transmission device used for driving the drum to rotate, and a tail gas treatment unit used for treating tail gas. The drum-type soil thermal desorption repair system can rapidly and effectively remove volatile pollutants in soil, and volatilized pollutants are adsorbed by the tail gas treatment device, thereby avoiding polluting the atmosphere. The drum-type soil thermal desorption repair system has a simple structure, a low cost and a wide application range, is safe and simple to operate, and can move.
Description
Technical field
The utility model belongs to the recovery technique field of contaminated soil, specifically, relates to a kind of drum-type soil thermal desorption repair system.
Background technology
Along with the development and the industrialized aggravation gradually of society, increase gradually in the industrial pollution place, and in order to guarantee the health of ecological environment and human body, the reparation of contaminated soil has become inexorable trend in the contaminated site.The soil remediation technology of domestic and international application comprises burning, thermal desorption, soil drip washing, dystopy immobilization/stabilization technology and biodegradation etc. at present.Wherein, China adopts incineration technology, the pollutant in the soil of place to go preferably mostly when handling hazardous waste and contaminated soil.Make it lose original function but burn the character of directly having destroyed soil itself, and energy consumption is higher, is prone to produce secondary pollution.Compare the limitation of incineration technology, adopt the thermal desorption technology, the mode of separating pollutant in soil through mode of heating has obtained people's attention.
At present; The thermal desorption technology at home soil pollution administer use on the engineering less; Existing thermal desorption equipment exist device complicated, should not dismantle, problem such as energy resource consumption is many; If any need air preheating system or sack cleaner, adsorption tower etc. be installed, on the convenience of cost and application, exist not enough.Simultaneously, there is the relatively low problem of heating-up temperature in some equipment, and for handling the scarce capacity that molten boiling point in the soil differs bigger pollutant, and exhaust combustion equipment possibly cause secondary pollution.
The utility model has proposed a kind of small-sized drum-type thermal desorption repair system of being convenient to carry to the problems referred to above, and each processing unit is convenient for changing realizes convenient installation; Help to reduce cost, improve the treatment effeciency of contaminated soil, the convenient application; And has an energy savings, advantage such as widely applicable.
The utility model content
The utility model provides a kind of drum-type soil thermal desorption repair system, is specially adapted to remove the laboratory research of volatile contaminant in the soil or practical application relatively on a small scale.Said drum-type soil thermal desorption repair system comprises thermal desorption unit and tail gas treating unit; Said thermal desorption unit comprises the feed arrangement that is positioned at drum front end, the drawing mechanism that is positioned at the cylinder rear end, burner hearth, be arranged on burner hearth heat-insulation layer around the burner hearth, be arranged in burner hearth cylinder, be arranged on the heating element heater of burner hearth bottom and be used to drive the transmission device that cylinder rotates; Said tail gas treating unit comprises flue, condenser, crude fibre filter, absorbent charcoal adsorber, quantifier and vavuum pump.
Preferably, said feed arrangement comprises loading hopper and oblique elephant trunk, and through slide valve control feeding coal; Said loading hopper is provided with a helical spring blanking device, to guarantee smooth charging; Said drawing mechanism is provided with discharge opening and slide valve, with according to material discharging situation adjustment aperture, and avoids getting into a large amount of cold wind.
Preferably, the surface of said drawing mechanism also is provided with peep hole, thermocouple hole and atmosphere hole, and said atmosphere pore area has valve and connecting flange, to feed nitrogen gas according to technology.
Preferably, said heating element heater is a plurality of alloying furnace silks, and said alloying furnace silk is evenly distributed in the cylinder lower end.
Preferably, be respectively equipped with at least one temperature element in said burner hearth and the cylinder, to show the temperature in burner hearth and the cylinder, this temperature element is a K type thermocouple.
Preferably, the front-end and back-end of said cylinder are supported by supporting rolling ring respectively; The inner chamber of said cylinder is provided with spiral stock guide and material rotating plate, to guarantee evenly to add thermal material; The outer wall of said cylinder is inlaid with the driving cog wheel rim, and said driving cog wheel rim is driven by reducing motor and drive pinion.Cylinder adopts the heat-resistance stainless steel material, and external heat stove burner hearth is the refractory fibre structure, and it is few to hold heat dissipation capacity, energy-conservation.The outer wall of said cylinder is inlaid with the driving cog wheel rim, and said driving cog wheel rim is driven by reducing motor and drive pinion.Motor variable-frequency speed-regulating, speed adjustable range 0.3-2.4r/min, 0.5～3.5 ° of cylinder slope.Can pass through to change the rotating speed and the time of staying of tilt adjustment material in cylinder of cylinder to the character of different pollutants, improve treatment effeciency.
More preferably, said cylinder also is provided with hand gear, cisco unity malfunction and avoid damage cylinder high temperature under when avoiding unexpected the power failure.
The dust that produces in pollutant that from soil, evaporates and the processing procedure carries out subsequent treatment through processes such as condensation, dust removal by filtration, charcoal absorptions, and pollutant is trapped in the device, avoids pollutant to escape and the secondary pollution that causes.
More preferably, the inside of said condenser is made up of a plurality of condenser pipes, and the outside of said condenser is cooled off by recirculated water; Said crude fibre filter is the macromolecular fibre filter; Said absorbent charcoal adsorber forms with the macromolecular fibre filter and connects, and between both connect, is provided with direct blast pipe simultaneously, so that under the situation of contamination-free, improve exhaust efficiency.Condenser selects for use recirculated water to carry out condensation, the recyclable utilization of water, economical environment-protective; There are a plurality of capillary columns to carry gas in the selected condenser, can disperse high-temperature gas, improve condensation efficiency; The method that dust arrester adopts macromolecular fibre to filter, good dedusting effect is easy to use succinct; Activated carbon granule etc. is adopted in the purification of exhaust pollutant, and cost is practiced thrift in advantages of good adsorption effect and replacing easily.
Preferably, said drum-type soil thermal desorption repair system also comprises and is arranged on the outer switch board of burner hearth, in order to regulate and the parameter of index drum temperature, rotating speed, vacuum.This switch board carries out Power Regulation control through artificial intelligence temperature controller and thyristor module, and this artificial intelligence temperature controller has the overtemperature alarm function, burns out to avoid the cylinder overtemperature.
Preferably, said cylinder and said flue, condenser, crude fibre filter, absorbent charcoal adsorber and vavuum pump are processed by the heat-resistance stainless steel material, and said burner hearth is the refractory fibre structure.
The beneficial effect of the utility model is fast and effeciently to remove the volatile contaminant matter in the soil, and the pollutant that volatilizes adsorbed by exhaust gas processing device, avoids atmosphere pollution.The system architecture of the utility model is simple, simple to operate, safety, and cost is low, and is removable, applied widely.
Description of drawings
Fig. 1 is the sketch map of the drum-type soil thermal desorption repair system of the utility model.
Description of reference numerals is following:
The specific embodiment
For structure, characteristic and other purpose that can further understand the utility model, combine appended preferred embodiment to specify as follows at present, illustrated preferred embodiment only is used to explain the technical scheme of the utility model, and non-limiting the utility model.
Fig. 1 is the sketch map of the drum-type soil thermal desorption repair system of the utility model.As shown in Figure 1, the drum-type soil thermal desorption repair system of the utility model is made up of thermal desorption unit I and tail gas treating unit II.Said thermal desorption unit I comprises the feed arrangement 1, the drawing mechanism 5 that is positioned at the cylinder rear end that are positioned at drum front end, be arranged on burner hearth heat-insulation layer 3 around the burner hearth, be arranged in burner hearth cylinder 4, be arranged on burner hearth bottom heating element heater 7, be used to drive transmission device 6, the burner hearth 13 that cylinder rotates.Said tail gas treating unit II comprises flue 2, condenser 8, crude fibre filter 9, absorbent charcoal adsorber 10, quantifier 11 and vavuum pump 12.
Below in conjunction with Fig. 1 the course of work of the drum-type soil thermal desorption repair system of the utility model is done further to set forth.Opening power, transmission device 6 entrys into service drive cylinder and rotate; The soil that contains volatile contaminant enters in the cylinder 4 from feed arrangement 1, stirs with cylinder rotation and material rotating plate, and material is transmission forward; Heating element heater 4 energising heating, (wherein, length is 900mm in the burner hearth to be evenly distributed in burner hearth; Design temperature is 1000 ℃ in the burner hearth) bottom, when making material, guarantee that material can homogeneous heating (the highest sintering temperature of material is 950 ℃) through burner hearth.Material continues forward; From drawing mechanism 5 axial dischargings, tail gas is through the air inlet of flue 2 rows to condenser 8 lower ends of exhaust gas processing device, and cooled naturally gas is disposed to crude fibre filter 9 from the gas outlet of upper end; Dust in this gas is adsorbed; Tail gas is discharged through the filter lower end, if tail gas need not charcoal absorption, then can directly arrange to atmosphere from the vavuum pump left end through pipeline; If tail gas needs further to handle, then gas gets into from absorbent charcoal adsorber 10 lower ends, and volatile contaminant is adsorbed, and clean gas is discharged from the upper end, through gas flowmeter 11, finally enters atmosphere from vavuum pump 12 right-hand members.
Wherein, it is reinforced to be provided with the feed arrangement 1 that comprises loading hopper and oblique elephant trunk at the front end of cylinder, and slide valve control feeding coal adopts stainless steel to make.Be provided with drawing mechanism 5 in the rear end of cylinder, drawing mechanism 5 is provided with discharging opening and slide valve, can avoid getting into a large amount of cold wind according to material discharging situation adjustment aperture.The surface of drawing mechanism is provided with peep hole, thermocouple hole and atmosphere hole, and the atmosphere pore area has valve and connecting flange, can feed gases such as nitrogen (having damp but can not feed hydrogen etc.) according to technology.Drawing mechanism and cylinder adopt contact seal, good sealing effect.
Be respectively equipped with at least one temperature element in burner hearth and the cylinder, to show the temperature in burner hearth and the cylinder, this temperature element is a K type thermocouple.Insert a K type thermocouple by cylinder wall, be used to monitor the cylinder actual temperature.
This system also comprises and is arranged on the outer switch board of burner hearth, in order to regulate and the parameter of index drum temperature, rotating speed, vacuum.This switch board carries out Power Regulation control through artificial intelligence temperature controller and thyristor module, and this artificial intelligence temperature controller has the overtemperature alarm function, burns out to avoid the cylinder overtemperature.
Lower end at the cylinder middle part is provided with electric furnace (that is, heating element heater), and thermal treatment zone length is 0.9 meter, and heating element heater is located at the cylinder lower end, so that cylinder can guarantee the material homogeneous heating fully rotating.Heating element heater is a plurality of alloying furnace silks (rated power is 24kw).Burner hearth 13 liners are fire-resistant fully fibrous structure, and it is few to hold heat dissipation capacity, quick heating.Oven enclosure is the shaped steel steel plate structure, good looking appearance.
The waste gas that material produces in roasting process is discharged by the tail gas treating unit of feed end, and said tail gas treating unit comprises flue, condenser, crude fibre filter, absorbent charcoal adsorber, quantifier and vavuum pump.The inside of said condenser is made up of a plurality of condenser pipes, and the outside of said condenser is cooled off by recirculated water; Said crude fibre filter is the macromolecular fibre filter; Said absorbent charcoal adsorber forms with the macromolecular fibre filter and connects, and between both connect, is provided with direct blast pipe simultaneously, so that under the situation of contamination-free, improve exhaust efficiency.Said flue, condenser, crude fibre filter and absorbent charcoal adsorber can adopt stainless steel to make, and general said flue is 2.5 meters of ￠ 76 pipes, length, and has 1 pair of connecting flange.The onsite user needs to draw outdoor the waste discharge tracheae or the discharging of processing back.Also be provided with micro-pressure sensor and manometer on the said flue.
The drum-type soil thermal desorption repair system of the utility model is applicable to organochlorine pesticide pollution soil, is specially adapted to handle the organochlorine pesticide pollution soil that contains DDTs and HCHs that initial concentration is respectively 119.64mg/kg and 32.64mg/kg.When adopting 280 ℃ of desorption temperatures, during time of staying 12min, DDTs and HCHs clearance have all reached 90%; When selecting 400 ℃ of desorption temperatures for use, the time of staying, DDTs and HCHs total amount were respectively 0.384mg/kg when being 12min, and 0.098mg/kg all is lower than national soil environment quality standard secondary standard (0.5mg/kg).Contaminated soil after the processing does not impact crops and environment basically, and less to the influence of physicochemical properties such as the soil organism, pH, cation exchange capacity (CEC), full nitrogen after repairing, and rapid available phosphorus significantly increases.Explain that the thermal desorption technology is less to soil natural fertility destruction, make that handling back soil can recover farming.The drum-type soil thermal desorption repair system of the utility model can fast and effeciently be removed the volatile contaminant matter in the soil, and the pollutant that volatilizes adsorbed by exhaust gas processing device, avoids atmosphere pollution.The system architecture of the utility model is simple, simple to operate, safety, and cost is low, and is removable, applied widely.
What need statement is that the above-mentioned utility model content and the specific embodiment are intended to prove the practical application of technical scheme that the utility model provides, and should not be construed as the qualification to the utility model protection domain.Those skilled in the art are in the spirit and principle of the utility model, when doing various modifications, being equal to replacement or improvement.The protection domain of the utility model is as the criterion with appended claims.
Claims (10)
1. a drum-type soil thermal desorption repair system is characterized in that, said drum-type soil thermal desorption repair system comprises thermal desorption unit and tail gas treating unit; Said thermal desorption unit comprises the feed arrangement that is positioned at drum front end, the drawing mechanism that is positioned at the cylinder rear end, burner hearth, be arranged on burner hearth heat-insulation layer around the burner hearth, be arranged in burner hearth cylinder, be arranged on the heating element heater of burner hearth bottom and be used to drive the transmission device that cylinder rotates; Said tail gas treating unit comprises flue, condenser, crude fibre filter, absorbent charcoal adsorber, quantifier and vavuum pump.
2. drum-type soil thermal desorption repair system as claimed in claim 1 is characterized in that, said feed arrangement comprises loading hopper and oblique elephant trunk, and through slide valve control feeding coal; Said loading hopper is provided with a helical spring blanking device; Said drawing mechanism is provided with discharging opening and slide valve.
3. drum-type soil thermal desorption repair system as claimed in claim 2 is characterized in that the surface of said drawing mechanism also is provided with peep hole, thermocouple hole and atmosphere hole, and said atmosphere pore area has valve and connecting flange.
4. drum-type soil thermal desorption repair system as claimed in claim 1 is characterized in that said heating element heater is a plurality of alloying furnace silks, and said alloying furnace silk is evenly distributed in the cylinder lower end.
5. drum-type soil thermal desorption repair system as claimed in claim 1 is characterized in that, is respectively equipped with at least one temperature element in said burner hearth and the cylinder, and this temperature element is a K type thermocouple.
6. drum-type soil thermal desorption repair system as claimed in claim 5 is characterized in that, the front-end and back-end of said cylinder are supported by supporting rolling ring respectively; The inner chamber of said cylinder is provided with material rotating plate; The outer wall of said cylinder is inlaid with the driving cog wheel rim, and said driving cog wheel rim is driven by reducing motor and drive pinion; Drum rotation speed is 0.3-2.4r/min, and cylinder slope is 0.5～3.5 degree.
7. drum-type soil thermal desorption repair system as claimed in claim 6 is characterized in that said cylinder also is provided with hand gear.
8. drum-type soil thermal desorption repair system as claimed in claim 1 is characterized in that the inside of said condenser is made up of a plurality of condenser pipes, and the outside of said condenser is cooled off by recirculated water; Said crude fibre filter is the macromolecular fibre filter; Said absorbent charcoal adsorber forms with the macromolecular fibre filter and connects, and between both connect, is provided with direct blast pipe simultaneously.
9. like the arbitrary described drum-type soil thermal desorption repair system of claim 1～8, it is characterized in that, also comprise being arranged on the outer switch board of burner hearth; This switch board carries out Power Regulation control through artificial intelligence temperature controller and thyristor module, and this artificial intelligence temperature controller has the overtemperature alarm function.
10. drum-type soil thermal desorption repair system as claimed in claim 1; It is characterized in that; Said cylinder and said flue, condenser, crude fibre filter, absorbent charcoal adsorber and vavuum pump are processed by the heat-resistance stainless steel material, and said burner hearth is the refractory fibre structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120186550U CN202143898U (en) | 2011-06-03 | 2011-06-03 | Drum-type soil thermal desorption repair system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120186550U CN202143898U (en) | 2011-06-03 | 2011-06-03 | Drum-type soil thermal desorption repair system |
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| CN202143898U true CN202143898U (en) | 2012-02-15 |
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| CN201120186550U Expired - Fee Related CN202143898U (en) | 2011-06-03 | 2011-06-03 | Drum-type soil thermal desorption repair system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102284473A (en) * | 2011-06-03 | 2011-12-21 | 中国环境科学研究院 | Drum type soil thermal desorption repair system |
| CN105855278A (en) * | 2016-05-16 | 2016-08-17 | 温岭市创嘉信息科技有限公司 | Remediation and treatment device for garden soil with organic pollutants |
| CN107167489A (en) * | 2017-04-20 | 2017-09-15 | 中国石油天然气股份有限公司 | A kind of oil-containing solids discarded object harmless treatment test method and device |
| CN107824608A (en) * | 2017-12-13 | 2018-03-23 | 长沙汇聚环境技术有限公司 | A kind of method and device of Volatile Organohalides and chromium combined contamination soil reparation |
| CN110449455A (en) * | 2019-08-07 | 2019-11-15 | 光大环境修复(江苏)有限公司 | A kind of restorative procedure for the contaminated soil that heavy metal lead is exceeded |
| CN113732036A (en) * | 2021-08-24 | 2021-12-03 | 中国环境科学研究院 | Method for promoting thermal treatment restoration of heavy petroleum polluted soil |
-
2011
- 2011-06-03 CN CN201120186550U patent/CN202143898U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102284473A (en) * | 2011-06-03 | 2011-12-21 | 中国环境科学研究院 | Drum type soil thermal desorption repair system |
| CN105855278A (en) * | 2016-05-16 | 2016-08-17 | 温岭市创嘉信息科技有限公司 | Remediation and treatment device for garden soil with organic pollutants |
| CN105855278B (en) * | 2016-05-16 | 2019-02-22 | 朱飞龙 | A kind of garden soil organic pollutant repair process device |
| CN107167489A (en) * | 2017-04-20 | 2017-09-15 | 中国石油天然气股份有限公司 | A kind of oil-containing solids discarded object harmless treatment test method and device |
| CN107824608A (en) * | 2017-12-13 | 2018-03-23 | 长沙汇聚环境技术有限公司 | A kind of method and device of Volatile Organohalides and chromium combined contamination soil reparation |
| CN110449455A (en) * | 2019-08-07 | 2019-11-15 | 光大环境修复(江苏)有限公司 | A kind of restorative procedure for the contaminated soil that heavy metal lead is exceeded |
| CN113732036A (en) * | 2021-08-24 | 2021-12-03 | 中国环境科学研究院 | Method for promoting thermal treatment restoration of heavy petroleum polluted soil |
| CN113732036B (en) * | 2021-08-24 | 2023-10-20 | 中国环境科学研究院 | Method for promoting heat treatment and restoration of heavy petroleum polluted soil |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120215 Termination date: 20140603 |