CN105618476B - A kind of soil thermal desorption prosthetic device based on solar energy - Google Patents
A kind of soil thermal desorption prosthetic device based on solar energy Download PDFInfo
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- CN105618476B CN105618476B CN201610176447.3A CN201610176447A CN105618476B CN 105618476 B CN105618476 B CN 105618476B CN 201610176447 A CN201610176447 A CN 201610176447A CN 105618476 B CN105618476 B CN 105618476B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/06—Reclamation of contaminated soil thermally
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- Life Sciences & Earth Sciences (AREA)
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
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Abstract
The present invention relates to soil treatment technical fields,A kind of soil thermal desorption prosthetic device based on solar energy,Including stent,The horizontal cartridge heater being located on stent,Feeding-passage is equipped on the upside of the left end of cartridge heater,Tapping channel is equipped on the downside of the right end of cartridge heater,The outside of cartridge heater is equipped with solar energy heat collection pipe,The side of stent is equipped with solar energy reflector,Main shaft is equipped in cartridge heater,The surface of main shaft is equipped with hurricane band,Stent is equipped with the motor of driving spindle rotation,Air inlet pipe is equipped on the upside of the left end of cartridge heater,Exhaust pipe is equipped on the upside of the right end of cartridge heater,Exhaust pipe is equipped with exhaust blower,The both ends of solar energy heat collection pipe are fixed with turning set,It is rotatablely connected between turning set and cartridge heater,The outside of the turning set of solar energy heat collection pipe left end is equipped with external tooth,Stent is equipped with stand-by motor,The shaft end of stand-by motor is equipped with and external tooth meshed gears.The present invention has the advantageous effect for using solar energy heating, greatly reducing soil thermal desorption cost.
Description
Technical field
The present invention relates to soil remediation processing technology field more particularly to a kind of soil thermal desorption reparations based on solar energy
Device.
Background technology
There is the pollution that a large amount of soil are subject to the organic pollutions such as benzene,toluene,xylene, ethylbenzene and TPH in China, with public affairs
Crowd is to the gradually understanding of organic contamination substance environment and health hazard, and urgent need is economical and effective ways handle these toxic substances
Matter.The recovery technique of main organic pollution contaminated soil has biological prosthetic, chemical remediation, peripheral doses etc., comparatively,
Peripheral doses or chemical remediation have wider applicability, especially suitable for high concentration, multicomponent organic contamination place.In crowd
In more peripheral doses or chemical remediation technology, thermal desorption is the mature and reliable technology for generally acknowledging processing organic material contaminated soil.
Thermal desorption recovery technique is by directly heating or indirectly heat, contaminated soil being heated to enough temperature, is made
The process that organic pollution contained by it is able to volatilize or detach.Thermal desorption is the object from an inversion of phases for another phase by pollutant
Separation process is managed, selectively can wave target contaminant by the temperature and residence time of material that control thermal desorption system
Hair.Direct pyrolysis device (CN101712042A) carries out thermal desorption using the mode that directly heats, but heat source gas and volatilization
The polluted gas gone out is mutually mixed, and increases the processing cost of follow-up tail gas, and system energy consumption is high and heat utilization efficiency is low.Therefore
How thermal desorption equipment operation energy consumption is reduced, energy-saving and emission-reduction are current thermal desorption recovery technique urgent problems to be solved.
Invention content
Thermal desorption equipment operation energy consumption of the prior art is big, soil pollution thermal desorption is of high cost in order to overcome by the present invention
Deficiency provides a kind of soil thermal desorption prosthetic device for utilizing solar energy heating, very big reduction soil thermal desorption cost.
To achieve these goals, the present invention adopts the following technical scheme that：
A kind of soil thermal desorption prosthetic device based on solar energy, the cartridge heater including stent, the level being located on stent,
Feeding-passage is equipped on the upside of the left end of the cartridge heater, is equipped with tapping channel on the downside of the right end of cartridge heater, the cartridge heater it is outer
Side is equipped with solar energy heat collection pipe, and the side of the stent is equipped with solar energy reflector, main shaft is equipped in the cartridge heater, described
The surface of main shaft be equipped with hurricane band, the stent is equipped with the motor of driving spindle rotation, on the left end of the cartridge heater
Side is equipped with air inlet pipe, and exhaust pipe is equipped on the upside of the right end of the cartridge heater, and the exhaust pipe is equipped with exhaust blower, the sun
The both ends of energy thermal-collecting tube are fixed with turning set, are rotatablely connected between the turning set and cartridge heater, solar energy heat collection pipe left end
Turning set outside be equipped with external tooth, the stent be equipped with stand-by motor, the shaft end of the stand-by motor is equipped with and external tooth
Meshed gears.
Contaminated soil is before desorption by spontaneously drying pretreatment so that the water content in soil, which is reduced to, meets desorption
It is required that pretreated soil enters from feeding-passage in cartridge heater, under the action of main shaft, hurricane band, soil is from cartridge heater
Left end be moved to right end, the solar energy reflector aggregation solar irradiation on stent is mapped on solar energy heat collection pipe, solar energy collection
Heat pipe rotation under the action of stand-by motor, so as to be evenly heated to cartridge heater, cartridge heater is evenly heated soil, so that
The harmful substances such as benzene,toluene,xylene, ethylbenzene evaporate to form gaseous state from soil in soil, exhaust blower air draft, heating
Toxic gas in cylinder exhausts, and harmful toxic matter substantially reduces in the soil finally discharged at tapping channel, after thermal desorption processing
Soil can be used for gardens, plant vegetables, this structure can heat soil using solar energy, energy saving, reduce soil
Thermal desorption cost；When the external world does not have the sun, can also high temperature air be directly passed through at air inlet pipe and soil is added
Heat, it is versatile.
Preferably, the solar energy heat collection pipe includes outer glass pipe, inner glass tube, the outer glass pipe and interior glass
The both ends of glass pipe are tightly connected, and the ring vaccum chamber of a closing, the interior glass are formed between outer glass pipe and inner glass tube
The outer wall of pipe is equipped with heat absorbing coating.
Preferably, the inside of the cartridge heater is equipped with rotating cylinder, annular gap, institute are formed between the rotating cylinder and cartridge heater
It states and is equipped with several connecting rods inside rotating cylinder between main shaft.Rotating cylinder in cartridge heater also rotates, so that soil turns over
It is dynamic, improve the soil efficiency of heating surface.
Preferably, the lateral surface of the rotating cylinder be equipped with several axially distributed heat transmission fins, the rotating cylinder it is interior
Wall is equipped with several shifting blocks for being used to stir soil, and the section of shifting block is V-shaped.Since solar energy reflector is typically only capable to the sun
(solar energy heat collection pipe opposite side passes through sunlight and irradiates heating) is heated in energy thermal-collecting tube side, so as to cause cartridge heater outer ring
Uneven heating is even, and the temperature in annular gap is also uniform, passes through the rotation of rotating cylinder in this structure so that the air in annular gap
Flowing, temperature are uniform, and so as to be heated to the soil at position each in circumference, heat transmission fin improves heat transfer efficiency；For the ease of soil
Earth is only accounted for the half of cartridge heater intracavity space by thermal desorption, the under normal conditions soil in cartridge heater, and soil is in the effect of gravity
Under, most of soil is all concentrated on the downside of main shaft, is unfavorable for heating, and by drum rotation in this structure, shifting block stirs soil, profit
It is heated in soil, while translating into upside on the soil on the downside of main shaft and scattering, greatly improves the soil efficiency of heating surface.
Preferably, being equipped with air flue in the main shaft, the outlet side of the exhaust blower passes through connecting tube and the right side of main shaft
The junction of end connection, connecting tube and main shaft is equipped with rotary joint.With many heats in the air of exhaust blower discharge, directly arrange
Bleed off waste thermal energy, in this structure, the high temperature poison gas of exhaust blower discharge is returned once again in the air flue of main shaft, from cartridge heater
The heart heats soil, improves heat utilization efficiency, improves soil thermal desorption efficiency.
Preferably, horizontal preheating cylinder, the pre-add are equipped on the stent on the upside of the left end of cartridge heater
It is connected on the downside of the left end of hot cylinder with feeding-passage, feed hopper, the preheating cylinder is equipped on the upside of the right end of the preheating cylinder
It is interior to be equipped with feeding packing auger, pass through synchronizing wheel, synchronous band connection, the rotation direction of the feeding packing auger between the feeding packing auger and main shaft
It is oppositely oriented with hurricane band；Central through hole, the left end of the main shaft and the left end of feeding packing auger axis are equipped in feeding packing auger axis
Between connected by return duct, the both ends of the return duct are equipped with rotary joint, and the right end of the feeding packing auger axis is equipped with tail
Tracheae.During thermal desorption, need the soil to be heated to 150 DEG C or more just harmful toxic matter to be made to evaporate from soil, and from into
Expect that the soil that channel adds in is normal temperature soils, soil rises to 150 DEG C from room temperature needs longer time, and normal temperature soils are straight
The temperature that can quickly reduce in cartridge heater is tapped into cartridge heater, therefore the soil thermal desorption efficiency in cartridge heater is low, this structure
In, setting preheating cylinder first preheats normal temperature soils, reduces the temperature difference of the soil moisture and desorption temperature, improves Soil Thermal and take off
Attached efficiency；And preheating is using the amount of residual heat of toxic gas discharged from main shaft left end, is finally discharged at offgas duct
Exhaust temperature close to room temperature, tail gas subsequent processing is also more conveniently, safely.
Preferably, the feeding packing auger axis is equipped with several blades；The outer sheath for preheating cylinder is equipped with heat absorption heat preservation
Set.Blade can further shred the blocky soil in preheating cylinder so that uniform into the soil particle in cartridge heater, heat is de-
Attached effect is good, while there is blade itself heat-conducting effect, blade the heat transfer on feeding packing auger axis can be given after being inserted into soil
Soil.
Preferably, horizontal post processing cylinder is equipped on the downside of the right end of the stent, on the right end of the post processing cylinder
Side is connected with tapping channel, and discharging channel is equipped on the downside of the left end of the post processing cylinder, discharging auger is equipped in post processing cylinder, is gone out
Expect that the right end of screw-conveyer-shaft is connected by the right end of synchronizing wheel, synchronous belt and main shaft；The upside of the post processing cylinder is equipped with partition board, institute
It states and liquid storage cylinder is surrounded between partition board and post processing cylinder, the partition board is equipped with several outages, and the frame bottom is equipped with water tank,
It is connected between the water tank and liquid storage cylinder by water pipe, water pipe is equipped with water pump, and fertilizer solution is equipped in water tank.Into cartridge heater excessively
Soil very drying, temperature height, soil after thermal desorption is very barren, and when the soil is by post processing cylinder, the fertilizer in water tank is molten
Liquid is sprayed onto at outage in soil after entering sap cavity, is realized soil humidification, is cooled down, the effect of getting fat.
Preferably, the downside of the partition board is equipped with steel wire, the steel wire undulate structure is recessed on steel wire
It falls into and locates corresponding each outage, be connected by screw between the high spot and partition board on steel wire.Steel wire has gas vent
Insulation blocking acts on, and prevents soil clogging outage；Steel wire undulate has when being pressurized at each male and fomale(M＆F) on steel wire
It is flexible, pass through the soil in elastic mesh when soil is adhered on mesh when soil extruded cords net below
It is detached with steel wire.
Preferably, the offgas duct is connect with vent gas treatment tower.Vent gas treatment tower handles tail gas, prevents tail
Gas pollutes environment.
Therefore, the present invention has the advantages that：(1) equipment utilization solar energy heating, it is energy saving, reduce Soil Thermal
It is desorbed cost；(2) soil carries out thermal desorption again after first passing through preheating, and soil thermal desorption is efficient；(3) soil after thermal desorption exists
It is humidified, cooled down in post processing cylinder, getting fat processing, treated, and soil just can be used directly.
Description of the drawings
Fig. 1 is a kind of structure diagram of the present invention.
Fig. 2 is enlarged diagram at A in Fig. 1.
Fig. 3 is enlarged diagram at B in Fig. 1.
In figure：Stent 1, feeding-passage 3, tapping channel 4, solar energy heat collection pipe 5, solar energy reflector 6, turns cartridge heater 2
Cylinder 7, connecting rod 8, heat transmission fin 9, shifting block 10, main shaft 11, hurricane band 12, motor 13, air inlet pipe 14, exhaust pipe 15, exhaust blower 16,
Air flue 17, connecting tube 18, rotary joint 19, preheating cylinder 20, feed hopper 21, feeding packing auger 22, feeding packing auger axis 23, return duct
24th, offgas duct 25, blade 26, heat absorption muff 27, post processing cylinder 28, discharging channel 29, discharging auger 30, discharging screw-conveyer-shaft
31st, partition board 32, liquid storage cylinder 33, outage 34, water tank 35, water pipe 36, water pump 37, steel wire 38, screw 39, stand-by motor 40,
Gear 41, outer glass pipe 50, inner glass tube 51, ring vaccum chamber 52, heat absorbing coating 53, turning set 54, external tooth 55.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and detailed description：
A kind of soil thermal desorption prosthetic device based on solar energy as shown in Figure 1, including stent 1, is located on stent
Horizontal cartridge heater 2, the left end upside of cartridge heater 2 are equipped with feeding-passage 3, tapping channel 4 are equipped on the downside of the right end of cartridge heater 2,
The outside of cartridge heater is equipped with solar energy heat collection pipe 5, and the side of stent is equipped with solar energy reflector 6；Main shaft is equipped in cartridge heater 2
11, the surface of main shaft is equipped with hurricane band 12, and stent 1 is equipped with the motor 13 of driving spindle rotation, passes through between motor and main shaft
Synchronizing wheel, synchronous band connection, the left end upside of cartridge heater are equipped with air inlet pipe 14, exhaust pipe 15 are equipped on the upside of the right end of cartridge heater,
Exhaust pipe is equipped with exhaust blower 16；Air flue 17 is equipped in main shaft 11, the outlet side of exhaust blower passes through connecting tube 18 and the right side of main shaft
The junction of end connection, connecting tube and main shaft is equipped with rotary joint 19.
As shown in Fig. 2, the both ends of solar energy heat collection pipe 5 are fixed with turning set 54, the company of rotation between turning set and cartridge heater
It connects, the outside of the turning set of solar energy heat collection pipe left end is equipped with external tooth 55, and stent is equipped with stand-by motor 40, the axis of stand-by motor
End is equipped with and external tooth meshed gears 41；The inside of cartridge heater 2 is equipped with rotating cylinder 7, and annular gap is formed between rotating cylinder and cartridge heater,
Several connecting rods 8 are equipped with inside rotating cylinder between main shaft, rotating cylinder is realized by connecting rod with main shaft and rotated synchronously, the lateral surface of rotating cylinder 7
Several axially distributed heat transmission fins 9 are equipped with, the inner wall of rotating cylinder is equipped with several shifting blocks 10 for being used to stir soil, shifting block
Section it is V-shaped；Solar energy heat collection pipe 5 includes outer glass pipe 50, inner glass tube 51, and the both ends of outer glass pipe and inner glass tube are close
Envelope connection, forms the ring vaccum chamber 52 of a closing between outer glass pipe and inner glass tube, the outer wall of inner glass tube is equipped with
Heat absorbing coating 53.
Horizontal preheating cylinder 20 is equipped on stent 1 on the upside of the left end of cartridge heater 2, on the downside of the left end for preheating cylinder 20
It is connected with feeding-passage 3, preheats and feed hopper 21 is equipped on the upside of the right end of cylinder 20, feeding packing auger 22 is equipped in preheating cylinder, into
Expect between auger and main shaft through synchronizing wheel, synchronous band connection, the rotation direction of feeding packing auger 22 is oppositely oriented with hurricane band 12；Into
Expect to be equipped with central through hole in screw-conveyer-shaft 23, be connected between the left end of main shaft and the left end of feeding packing auger axis by return duct 24, returned
The both ends of flow tube are equipped with rotary joint, and the right end of feeding packing auger axis is equipped with offgas duct 25, and offgas duct is connect with vent gas treatment tower；
Feeding packing auger axis 23 is equipped with several blades 26, and the outer sheath for preheating cylinder is equipped with heat absorption muff 27.
Horizontal post processing cylinder 28 is equipped on the downside of the right end of stent 1, post-processes and is connected on the upside of the right end of cylinder with tapping channel,
It post-processes and discharging channel 29 is equipped on the downside of the left end of cylinder, discharging auger 30 is equipped in post processing cylinder, the right end for the screw-conveyer-shaft 31 that discharges
It is connected by the right end of synchronizing wheel, synchronous belt and main shaft；As shown in figure 3, post processing cylinder 28 upside be equipped with partition board 32, partition board with
Liquid storage cylinder 33 is surrounded between post processing cylinder, partition board is equipped with several outages 34, and frame bottom is equipped with water tank 35, is equipped in water tank
Fertilizer solution is connected between water tank 35 and liquid storage cylinder 33 by water pipe 36, and water pipe is equipped with water pump 37, and the downside of partition board is equipped with steel
Silk screen 38, steel wire undulate structure, the recess on steel wire correspond to each outage, the high spot on steel wire with every
It is connected between plate by screw 39.
With reference to attached drawing, application method of the invention is as follows：Whole device is placed under the sun, adjusting apparatus position so that too
Positive energy reflector assembles sunlight, is reflected into solar energy heating pipe surface, and solar energy heat collection pipe own rotation is heated evenly,
Heat after solar energy heat collection pipe heat absorption passes to cartridge heater by heat-conducting medium, thus to being heated in cartridge heater, air draft
Machine is opened, the hot-air in cartridge heater under the action of exhaust blower from main shaft right end into air entering flue in after from left end enter reflux
Pipe, gas in return duct at offgas duct using discharging after in feeding packing auger axis；Soil enters preheating at feed hopper
In cylinder, the high-temperature gas in feeding packing auger axis preheats soil, improves the soil moisture, while the knife on feeding packing auger axis
Piece shreds blocky soil, and the soil after preheating and shredding enters in cartridge heater by reheating, in heating process, spiral
Band, rotating cylinder soil is overturn, is disperseed, improve the soil efficiency of heating surface, when temperature is heated to 150 DEG C or more, in soil in
The harmful substances such as benzene,toluene,xylene, ethylbenzene evaporate to form gaseous state from soil, and gaseous harmful toxic matter is by exhaust blower
It siphons away, is finally discharged into from offgas duct in vent gas treatment tower, soil is after thermal desorption, worm's ovum, weed seed quilt in soil
High temperature kills, and the murder by poisoning organic matter in soil is desorbed, decomposes, discharges, disposes, and finally dried soil enters post processing cylinder
Interior, the fertilizer solution in water tank is sprayed onto in soil, is humidified, cooled down to soil, getting fat, is finally discharged at discharging channel
Soil with regard to can be directly used in gardens, farmland, vegetable garden use.
Claims (7)
1. a kind of soil thermal desorption prosthetic device based on solar energy, including stent, the horizontal cartridge heater being located on stent, institute
It states and feeding-passage is equipped on the upside of the left end of cartridge heater, tapping channel is equipped on the downside of the right end of cartridge heater, it is characterized in that, the heating
The outside of cylinder is equipped with solar energy heat collection pipe, and the side of the stent is equipped with solar energy reflector, master is equipped in the cartridge heater
Axis, the surface of the main shaft are equipped with hurricane band, and the stent is equipped with the motor of driving spindle rotation, the cartridge heater
Air inlet pipe is equipped on the upside of left end, exhaust pipe is equipped on the upside of the right end of the cartridge heater, the exhaust pipe is equipped with exhaust blower, institute
The both ends for stating solar energy heat collection pipe are fixed with turning set, are rotatablely connected between the turning set and cartridge heater, solar energy heating
The outside of the turning set of pipe left end is equipped with external tooth, and the stent is equipped with stand-by motor, and the shaft end of the stand-by motor is equipped with
With external tooth meshed gears；The inside of the cartridge heater is equipped with rotating cylinder, and annular gap, institute are formed between the rotating cylinder and cartridge heater
It states and is equipped with several connecting rods inside rotating cylinder between main shaft, be equipped with air flue in the main shaft, the outlet side of the exhaust blower passes through
Connecting tube is connected with the right end of main shaft, and the junction of connecting tube and main shaft is equipped with rotary joint.
2. a kind of soil thermal desorption prosthetic device based on solar energy according to claim 1, it is characterized in that, it is described too
Positive energy thermal-collecting tube includes outer glass pipe, inner glass tube, the both ends sealed connection of the outer glass pipe and inner glass tube, outer glass
The ring vaccum chamber of a closing is formed between pipe and inner glass tube, the outer wall of the inner glass tube is equipped with heat absorbing coating.
3. a kind of soil thermal desorption prosthetic device based on solar energy according to claim 1, it is characterized in that, the rotating cylinder
Lateral surface be equipped with several axially distributed heat transmission fins, the inner wall of the rotating cylinder is equipped with several for stirring soil
Shifting block, the section of shifting block are V-shaped.
4. a kind of soil thermal desorption prosthetic device based on solar energy according to claim 1, it is characterized in that, the branch
Horizontal preheating cylinder is equipped on frame on the upside of the left end of cartridge heater, is connected on the downside of the left end of the preheating cylinder with feeding-passage
It is logical, feed hopper is equipped on the upside of the right end of the preheating cylinder, feeding packing auger, the feeding packing auger are equipped in the preheating cylinder
By synchronizing wheel, synchronous band connection between main shaft, the rotation direction of the feeding packing auger and hurricane band it is oppositely oriented；Feeding packing auger
Central through hole is equipped in axis, is connected between the left end of the main shaft and the left end of feeding packing auger axis by return duct, the reflux
The both ends of pipe are equipped with rotary joint, and the right end of the feeding packing auger axis is equipped with offgas duct.
5. a kind of soil thermal desorption prosthetic device based on solar energy according to claim 4, it is characterized in that, it is described into
Expect that screw-conveyer-shaft is equipped with several blades；The outer sheath for preheating cylinder is equipped with heat absorption muff.
6. a kind of soil thermal desorption prosthetic device based on solar energy according to claim 1, it is characterized in that, the stent
Right end on the downside of be equipped with horizontal post processing cylinder, connected on the upside of the right end of the post processing cylinder with tapping channel, the rear place
Manage and discharging channel be equipped on the downside of the left end of cylinder, be equipped with discharging auger in post processing cylinder, the right end of the screw-conveyer-shaft that discharges by synchronizing wheel,
The right end of synchronous belt and main shaft connects；The upside of the post processing cylinder is equipped with partition board, is surrounded between the partition board and post processing cylinder
Liquid storage cylinder, the partition board are equipped with several outages, and the frame bottom is equipped with water tank, passes through between the water tank and liquid storage cylinder
Water pipe connects, and water pipe is equipped with water pump, and fertilizer solution is equipped in water tank.
7. a kind of soil thermal desorption prosthetic device based on solar energy according to claim 6, it is characterized in that, the partition board
Downside be equipped with steel wire, the steel wire undulate structure, the recess on steel wire corresponds to each outage, steel wire
On high spot and partition board between be connected by screw.
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| CN105080956A (en) * | 2015-08-27 | 2015-11-25 | 常州大学 | Device for restoring compound contaminated soil through solar light and heat in ex-situ manner |
| CN205587424U (en) * | 2016-03-21 | 2016-09-21 | 浙江机电职业技术学院 | Soil thermal desorption prosthetic devices based on solar energy |
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