CN110014035A - A kind of thermal desorption soil remediation equipment - Google Patents
A kind of thermal desorption soil remediation equipment Download PDFInfo
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- CN110014035A CN110014035A CN201910432868.1A CN201910432868A CN110014035A CN 110014035 A CN110014035 A CN 110014035A CN 201910432868 A CN201910432868 A CN 201910432868A CN 110014035 A CN110014035 A CN 110014035A
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- hot
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- soil
- air
- thermal desorption
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- 238000003795 desorption Methods 0.000 title claims abstract description 38
- 238000005067 remediation Methods 0.000 title claims abstract description 29
- 238000002156 mixing Methods 0.000 claims abstract description 73
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- 239000000463 material Substances 0.000 claims description 8
- 239000012071 phase Substances 0.000 claims description 8
- 125000004122 cyclic group Chemical group 0.000 claims description 4
- 239000007792 gaseous phase Substances 0.000 claims description 3
- 238000010792 warming Methods 0.000 description 20
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 9
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- 238000005265 energy consumption Methods 0.000 description 3
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- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002957 persistent organic pollutant Substances 0.000 description 3
- 238000007781 pre-processing Methods 0.000 description 3
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- 238000000746 purification Methods 0.000 description 2
- BBEAQIROQSPTKN-UHFFFAOYSA-N pyrene Chemical compound C1=CC=C2C=CC3=CC=CC4=CC=C1C2=C43 BBEAQIROQSPTKN-UHFFFAOYSA-N 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
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- 206010028400 Mutagenic effect Diseases 0.000 description 1
- 208000031320 Teratogenesis Diseases 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
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- LHRCREOYAASXPZ-UHFFFAOYSA-N dibenz[a,h]anthracene Chemical compound C1=CC=C2C(C=C3C=CC=4C(C3=C3)=CC=CC=4)=C3C=CC2=C1 LHRCREOYAASXPZ-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- 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
Abstract
The invention provides a kind of thermal desorption soil remediation equipment, including guide pipe and reaction tube, and guide pipe is for launching soil to be processed into reaction tube, and the feed end of guide pipe is connected with pretreatment unit, and discharge end is connected with reaction tube；For mixing hot-air and soil to be processed, the feed end of reaction tube is connected reaction tube with hot-gas system, and discharge end is connected by conveyance conduit with separator；Reaction tube includes that disturbance section and mixing section, the feed end for disturbing section are connected with hot-gas system, and discharge end is connected with the feed end of mixing section, and intersegmental part is raised equipped with water conservancy diversion disturbing, water conservancy diversion protrusion for changing stream of hot air to and promote the flowing velocity of hot-air；Mixing section is used to be promoted the mixed effect of hot-air and soil, and the discharge end of mixing section is connected with conveyance conduit.A kind of thermal desorption soil remediation equipment, is able to ascend the mixed effect of soil and hot-air described in the invention, to improve the efficiency of soil thermal desorption processing.
Description
Technical field
The invention belongs to technical field of soil remediation, more particularly, to a kind of thermal desorption soil remediation equipment.
Background technique
With the production of modernization industry and agricultural, the various organic pollutants such as large quantity of exhaust gas, waste liquid, waste largely enter
In the environment such as soil, these organic pollutants have carcinogenic, teratogenesis and mutagenic effect mostly, and have low-solubility, ring
The characteristics such as border persistence, biological toxicity, can exist in the environment for a long time, accumulate in the media such as biology, underground water, soil,
Pollution and harm caused by soil environment further migrate to underground water or enter food chain, to eco-environmental quality and people
Class health generates significant impact.
Thermal desorption technology can be selected at this stage to handle contaminated soil, so-called thermal desorption technology is a kind of non-burning
Soil treatment technology, soil is recycling after with pollutant process range, wide, equipment is moved, repaired and does not generate two evils
The advantages that English.But the efficiency of existing thermal desorption equipment is relatively low, therefore the time used in its processing soil is longer, when long
Between heat supply during will cause consuming excessively for the energy, leading to soil remediation, cost has risen considerably.
Summary of the invention
In view of this, the invention is directed to a kind of thermal desorption soil remediation equipment, to realize that promoting Soil Thermal takes off
The purpose of attached treatment effeciency.
In order to achieve the above objectives, the technical solution of the invention is achieved in that
A kind of thermal desorption soil remediation equipment, including guide pipe and reaction tube, the guide pipe into reaction tube for throwing
Soil to be processed is put, the feed end of guide pipe is connected with pretreatment unit, and discharge end is connected with reaction tube；The reaction tube is used for
Mixing hot-air and soil to be processed, the feed end of reaction tube be connected with hot-gas system, discharge end pass through conveyance conduit with separate
Device is connected；
The discharge end band of the guide pipe is cambered, moves so that having into the material in reaction tube along reaction tube
Initial velocity；
The reaction tube includes disturbance section and mixing section, and the feed end of the disturbance section is connected with hot-gas system, discharge end
It is connected with the feed end of the mixing section, is equipped with water conservancy diversion protrusion in disturbance intersegmental part, the water conservancy diversion protrusion is for changing hot-air
Flow to and promoted the flowing velocity of hot-air；The mixing section is used to be promoted the mixed effect of hot-air and soil, mixing section
Discharge end is connected with conveyance conduit.
Further, the water conservancy diversion protrusion is equipped with guide face, transition face and parting surface, and the guide face is arc slope
Water conservancy diversion protrusion is arranged in close to the side of feed end in face；The transition face is arcuate surface, and the top of water conservancy diversion protrusion is arranged in；Institute
Stating parting surface is arc slope surface, and water conservancy diversion protrusion is arranged in close to the side of discharge end；The guide face open side and parting surface
Open side is oppositely arranged, and the gradient of guide face is less than the gradient of parting surface.
Further, the mixing section inner wall, which is equipped with, mixes protrusion and mixing grooving, and the mixing grooving and mixing are convex
The axis direction risen along mixing section is alternately arranged.
Further, the mixing protrusion is annular projection, and the mixing grooving is cyclic annular grooving.
Further, the surface of the mixing protrusion and mixing grooving is smooth arcwall face.
Further, in the mixing section ratio of largest passages diameter and smallest passage diameter between 1:0.5 to 1:
Between 0.85.
Further, the internal diameter of the guide pipe is gradually reduced along the direction of motion of soil.
Further, the gaseous phase outlet of the separator is connected with the air inlet of hot-gas system, and after utilization separation
Gas-phase product heats subsequent soil.
Further, the conveyance conduit helically turns the outside for being wrapped in pretreatment unit, and utilizes conveyance conduit
Waste heat heats pretreatment unit.
Further, the delivery pipe is equipped with UTILIZATION OF VESIDUAL HEAT IN pipe, one end of the UTILIZATION OF VESIDUAL HEAT IN pipe and conveyance conduit
Shell side is connected, and the other end is placed in inside pretreatment unit, can be oriented to the heat of conveyance conduit by UTILIZATION OF VESIDUAL HEAT IN pipe and pre-process
Inside device.
Compared with the existing technology, a kind of thermal desorption soil remediation equipment described in the invention has the advantage that
(1) a kind of thermal desorption soil remediation equipment described in the invention, is able to ascend hot-air and soil to be processed
Mixed effect, thus accelerate thermal desorption processing operating rate, be efficiently completed the work of soil remediation.Wherein, section is disturbed
The flow direction of hot-air in pipe can be influenced using water conservancy diversion protrusion, so that hot-air enters mixing section with the posture of sinuous flow
In, at the same time, since the presence of water conservancy diversion protrusion can reduce the channel diameter in disturbance section, hot-air is passing through disturbance section
After can also obtain supercharging effect, to improve the flowing velocity of hot-air.Understand after hot-air enters mixing section and carrys out self-conductance
It is mixed to the soil of pipe, since hot-air is to enter mixing section with the posture of sinuous flow, the hot-air in mixing section
It will be greatly increased with the touch opportunity of soil, heat exchange efficiency can be obviously improved compared with prior art.Further, since guiding
The discharge end band of pipe is cambered, and the soil into reaction tube can have a lower initial velocity, and the flow velocity of hot-air is then remote
Greater than this initial velocity, therefore friction can be generated between hot-air and soil, by friction can further be promoted hot-air with
The heat transfer effect of soil promotes the efficiency of thermal desorption work.
(2) a kind of thermal desorption soil remediation equipment described in the invention, is able to ascend in Soil Thermal desorption process
Heat utilization efficiency can also reduce energy consumption while promoting soil remediation efficiency.Wherein the waste heat of conveyance conduit will by with
In the temperature of promotion pretreatment unit, therefore it can reduce the energy consumption in preprocessing process.In addition, the gas phase of separator
Product will be utilized by hot-gas system, and the heat in gas-phase product will be used in the subsequent soil to be processed of heating, thus
Reduce the energy consumption of manufacture hot-air.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide to further understand the invention, present invention wound
The illustrative embodiments and their description made are used to explain the present invention creation, do not constitute the improper restriction to the invention.?
In attached drawing:
Fig. 1 is a kind of structural schematic diagram of thermal desorption soil remediation equipment described in the invention embodiment；
Fig. 2 is the cut-away illustration of guide pipe and reaction tube described in the invention embodiment.
Description of symbols:
1- pretreatment unit；11- warming box；111- feed inlet；112- escape pipe；12- is crushed conveying device；13- guidance
Slope surface；14- collection bucket；2- guide pipe；3- reaction tube；31- disturbs section；311- water conservancy diversion protrusion；312- guide face；313- transition
Face；314- parting surface；32- mixing section；321- mixing protrusion；322- mixing grooving；4- conveyance conduit；5- separator；6- is dry
Method deduster；7- air processor；8- hot-gas system；81- heating device；82- pressure control device.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the invention can
To be combined with each other.
In the description of the invention, it is to be understood that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description the invention and simplifies description, rather than indicate
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand
For the limitation to the invention.In addition, term " first ", " second " etc. are used for description purposes only, and should not be understood as indicating
Or it implies relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " second " etc. are defined as a result,
Feature can explicitly or implicitly include one or more of the features.In the description of the invention, unless separately
It is described, the meaning of " plurality " is two or more.
In the description of the invention, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, on being understood by concrete condition
State concrete meaning of the term in the invention.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments creates.
A kind of thermal desorption soil remediation equipment, structure can be illustrated by Fig. 1, as shown, this prosthetic appliance includes
Pretreatment unit 1, guide pipe 2, reaction tube 3, hot-gas system 8, conveyance conduit 4 and separator 5.The charging of the guide pipe 2
End is connected with pretreatment unit 1, and discharge end is connected with reaction tube 3, and the feed end of reaction tube 3 is connected with hot-gas system 8, discharge end
It is connected by conveyance conduit 4 with separator 5.
The pretreatment unit 1 makes soil obtain desiccation before carrying out thermal desorption processing for pre-processing to soil
With it is broken.Specifically, the pretreatment unit 1 includes warming box 11, the warming box 11 is rising for accommodating soil to be processed
It is equipped with feed inlet 111 at the top of incubator 11, partition is equipped in feed inlet 111.The partition has the function of oblique opening and closing
Can, and partition can be carried out automatically controlling with pressure work in warming box 11 for reference value in actual operation.On the top of warming box 11
It is additionally provided with escape pipe 112 on face, the air pressure inside warming box 11 can be adjusted by escape pipe 112, avoids that thing occurs
Therefore.The top of the escape pipe 112 is equipped with leaving air control valve, and leaving air control valve is beaten when the pressure inside warming box 11 is higher
It opens, so that warming box 11 is released stress into environment, when 11 air pressure inside of warming box restores normal level, leaving air control valve is closed
It closes, avoids the heat losses inside warming box 11.
Broken conveying device 12 is equipped with inside the warming box 11, illustratively, the broken conveying device 12 can be selected
Screw rod conveyor.As shown in Figure 1, in the 11 settable multiple broken conveying devices 12 in inside of warming box, adjacent broken conveying dress
Setting 12 has opposite material conveying direction.After soil to be processed enters warming box 11, broken conveying device 12 can will agglomerate
Soil breaking be tiny particle, and be finally transported to inside guide pipe 2.
Optionally, it is equipped with anti-drop plate between adjacent broken conveying device 12, can be avoided soil by the way that anti-drop plate is arranged
Earth slides downwards, it is ensured that soil successively processing Jing Guo multiple stage crushing conveying device 12 inside warming box 11.
When carrying out preprocessing process, warming box 11 can carry out drying and other treatment to soil, so that entering guiding in soil
In the state that drying is loose when pipe 2.And the vapor being evaporated from soil can then condense at the top of warming box 11, be
Moisture is avoided to drop onto soil again, the top inner wall of the warming box 11 is equipped with guides slope as made of water-absorbent material
Face 13, the gradient of the guidance slope surface 13 are equipped with collection bucket 14 between 2% to 10%, and in the bottom end of slope surface.Carry out
During soil desiccation, the vapor evaporated can condense in guidance slope surface 13, and water droplet made of condensation can enter collection bucket
It is stored in 14.In the settable liquid level sensor in the inside of collection bucket 14, when the liquid level in collection bucket 14 is higher than preset value
Draining avoids collection bucket 14 that spill-over phenomenon occurs.
It can enter inside guide pipe 2 by pretreated soil, as shown in Fig. 2, the discharge end of guide pipe 2 has arc
Degree, therefore the soil entered in reaction tube 3 by guide pipe 2 can be with the initial velocity moved along reaction tube 3.With initial velocity
Soil can be in contact in 3 inside of reaction tube with hot-air, and organic dirt in soil can be made by heat entrained by hot-air
Object vaporization is contaminated, to realize the purpose of rehabilitating soil.
Optionally, speed, the direction of motion of the internal diameter of the guide pipe 2 along soil are launched for the soil of restricted guidance pipe 2
It is gradually reduced, structure can be illustrated by Fig. 2.The volume that soil enters in reaction tube 3 can be limited by the reduction of internal diameter,
Reaction tube 3 blocks caused by avoiding soil injected volume excessive.In addition, anti-reverse return device can be also added on guide pipe 2, thus
Avoid soil that countercurrent movement occurs in guide pipe 2.
The reaction tube 3 includes disturbance section 31 and mixing section 32, and the feed end of disturbance section 31 is connected with hot-gas system 8, out
Material end is connected with the feed end of mixing section 32, and the discharge end of mixing section 32 is connected with conveyance conduit 4.Inside the disturbance section 31
Equipped with water conservancy diversion protrusion 311, by be arranged water conservancy diversion protrusion 311 can change stream of hot air to and promote the flowing velocity of hot-air,
So that hot-air is entered in mixing section 32 with the state of sinuous flow and high speed.
Specifically, the water conservancy diversion protrusion 311 is equipped with guide face 312, transition face 313 and parting surface 314, wherein guide face
312 are arranged in water conservancy diversion protrusion 311 close to the side of disturbance 31 feed end of section, and water conservancy diversion protrusion 312 is arc slope surface.Work as hot-air
When being moved along disturbance section 31, guide face 311 can change the flow direction of hot-air, so that hot-air is along 311 guide of guide face
It climbs on the top of stream protrusion 31.It can be with setting at 311 top of water conservancy diversion protrusion when hot-air moves to the top of water conservancy diversion protrusion 31
Transition face 313 be in contact, the transition face 313 be arcuate surface.It can reduce in disturbance section 31 by the way that transition face 313 is arranged
Channel diameter so that hot-air obtain pressurization speed-raising effect, simultaneously because transition face 313 be arch, therefore when hot-air with
Transition face 313 can generate disturbance when contacting, therefore will form sinuous flow state.Understand and separate after hot-air passes through transition face 313
Face 314 is in contact, and the parting surface 314 is the arc slope surface that the close disturbance 31 discharge end side of section of water conservancy diversion protrusion 311 is arranged in,
And parting surface 314 and the open side of guide face 312 are oppositely arranged.Compared with guide face 312, the gradient of parting surface 314 is larger, because
This will not be flowed after hot-air is separated with transition face 313 along parting surface 314, but can be directly towards the discharging of disturbance section 31
Extreme direction movement.
Mixing section 32 can be entered after hot-air leaves disturbance section 31, hot-air can be with 32 institute of guide pipe in mixing section 32
The soil of importing mixes, therefore can transfer heat to inside soil, and the organic pollutant in soil can become gaseous state at this time,
To realize the separation of pollutant and soil.
To promote the heat transfer effect between soil and hot-air, accelerate the progress of thermal desorption process, in the mixing section 32
Inner wall be equipped with mixing protrusion 321 and mixing grooving 322, the mixing grooving 322 and mixing raised 321 are along mixing section 32
Axis direction is alternately arranged.When being mixed with hot-air soil and being flowed inside mixing section 32, the mixing grooving that is alternately arranged
322 and mixing protrusion 321 can upset the flow direction of hot-air and soil, to promote the mixing effect of soil preheated air
Fruit.Further, since soil when entering mixing section 32 with certain initial velocity, therefore will form speed between hot-air and soil
It is poor to spend, this difference will lead to and rub between hot-air and soil, to accelerate the progress of heat transfer process.
Optionally, the mixing protrusion 321 is annular projection, mixes grooving 322 as cyclic annular grooving, and annular projection and ring
Axis of the axis of shape grooving with mixing section 32 coincides.When mixing protrusion 321 is cyclic structure energy with grooving 322 is mixed
It is enough that maximumlly the material in mixing section 32 is had an impact, so that soil is uniformly mixed with hot-air.
It is another optional, in the mixing section 32 ratio of largest passages diameter and smallest passage diameter between 1:0.5 extremely
Between 1:0.85.After setting mixing protrusion 321 and mixing grooving 322, the channel diameter in mixing section 32 will change,
When hot-air flows in mixing section 32, the variation of channel diameter can influence the flowing velocity of gas.
After soil and hot-air are sufficiently mixed and are exchanged heat completely, the material in mixing section 32 will be led by hot-air
Into conveyance conduit.It, can be convex by the mixing in order to reduce obstruction degree of the mixing protrusion 321 with mixing grooving 322 to material
Playing 321 and mixing the surface of grooving is the arcwall face for being set as smooth.
In practical work process, the working efficiency of soil thermal desorption also suffers from the shadow of heat entrained by hot-air
It rings, the temperature for promoting hot-air would generally be selected in the prior art to promote the working efficiency of thermal desorption.But it is empty to promote heat
The heat of gas will additionally consume a large amount of energy, to increase the economic cost of soil thermal desorption.Present inventor
It was found that there are a large amount of device by utilizing waste heat in existing soil remediation equipment, these heats tend not to be utilized effectively, if will
The waste heat of device obtained more in the identical situation of energy-output ratio using can then preheat to soil and hot-air
High reaction speed.
Specifically, as shown in Figure 1, the air inlet of the gaseous phase outlet of the separator described in the present apparatus and hot-gas system 8
It is connected.After compounding substances enter separator 5, separator 5 can separate gaseous substance with soil, the soil after separation
As purification soil, and the gas-phase product after separating can then carry a large amount of waste heat.This portion gas is passing through nonaqueous dust cleaner 6
It will enter inside hot-gas system 8 after purification with air processor 7, it will be as new after the reheating of hot-gas system 8
Hot-air import reaction tube 3 inside.It is able to ascend the heat utilization efficiency of the present apparatus by the recycling of gas-phase product, while can drop
The energy-output ratio of low manufacture hot-air, to promote the economic benefit of the present apparatus.
It should be noted that the hot-gas system 8 includes heating device 81 and pressure control device 82, when there is air entrance
When hot-gas system 8, heating device 81 is used to be promoted the temperature of air, and pressure control device 82 can be in hot-gas system 8
Pressure is detected, and is vented outwards when air pressure is higher, absorbs fresh air from the external world when air pressure is lower.
In addition, compounding substances are transported to the conveyance conduit 4 in separator 5 with a large amount of waste heat, in this implementation
Pretreatment unit 1 is heated using conveyance conduit 4 in example, promotes temperature of the soil before entering reaction tube 3.Specifically
, the conveyance conduit 4 helically turns the outside for being wrapped in pretreatment unit 1, and UTILIZATION OF VESIDUAL HEAT IN is equipped on conveyance conduit 4
Pipe, one end of the UTILIZATION OF VESIDUAL HEAT IN pipe are connected with the shell side of conveyance conduit 4, and the other end is placed in inside pretreatment unit 1.It is wrapped in
Conveyance conduit 4 outside pretreatment unit 1 can carry out indirect type heating to soil, and the temperature of soil is promoted using waste heat, and
Be inserted into pretreatment unit 1 inside UTILIZATION OF VESIDUAL HEAT IN pipe can the significantly more efficient temperature that soil is promoted using device by utilizing waste heat, from
And realize the purpose for promoting heat utilization efficiency and thermal desorption efficiency.
A kind of thermal desorption soil remediation equipment described in the present embodiment can be directed to and have: phenol (such as phenol, 2-
Chlorophenol, 2- nitrophenol), multiring aromatic hydrocarbon [such as naphthalene, 2- methyl naphthalene, 2- chloronaphthalene, fluorenes, phenanthrene, anthracene, fluoranthene, pyrene, benzo (a)
Anthracene, ten thousand, the glimmering green onion of benzo (b), benzo (k) fluoranthene, benzo (a) pyrene, indeno (1,2,3-cd) pyrene, dibenzo (a, h) anthracene and benzo
(g, h, i))], phthalate [such as repefral, diethyl phthalate, dibutyl phthalate, neighbour
Phthalic acid two (2- ethylhexyl)；Chlorinated hydrocarbons: 1,3- dichloro-benzenes, Isosorbide-5-Nitrae-dichloro-benzenes, 1,2- dichloro-benzenes] it is repaired,
Specific work process is as follows:
1, the temperature of heating device 81 is raised to 450 DEG C, and stablized 10 minutes, and controlled 8 internal pressure of hot-gas system and be
300KPa。
2, it will heat up 11 temperature of case and be raised to 85 DEG C, and stablize 10 minutes.
3,420 DEG C are not less than to 3 delivered inside temperature of reaction tube, pressure is not less than the hot-air of 300KPa.
4, it will be put into warming box 11 with block-like soil by feed inlet 111, be crushed through broken conveying device 12,
Eventually enter into 2 inner wall of guide pipe.
5, soil is uniformly mixed away from hot-air after entering reaction tube 3 and is sufficiently exchanged heat, and enters separation dress by conveyance conduit 4
It sets in 5.
6, separator 5 separates the soil in mixture with gas-phase product, and wherein gas-phase product is through 6 He of nonaqueous dust cleaner
Air processor 7 is purified, and purified air delivery to hot-gas system 8 is recycled.
In addition, when the pressure in warming box 11 is greater than 160KPa, leaving air control valve is certainly in above equipment operational process
Dynamic opening is exhausted, and when the pressure in warming box 11 is less than 110KPa, stopping exhaust being automatically closed in leaving air control valve.Work as partition
(outside is greater than inside) opens when two sides pressure difference is greater than 200KPa, when partition two sides pressure difference is less than 120KPa (outside is greater than inside)
It closes.Air is absorbed from the external world when the pressure in hot-gas system 8 is less than 250Kpa, when pipeline pressure stops in 280~300Kpa
Air is only passed in and out, outwardly discharges air when pipeline pressure is greater than 320Kpa.
A kind of thermal desorption soil remediation equipment provided in the present embodiment can using the cooperation of reaction tube and guide pipe
The mixed effect of hot-air and soil to be processed is promoted, to accelerate the operating rate of thermal desorption processing, is efficiently completed soil
The work of reparation.In addition, the present apparatus also has higher heat utilization efficiency, air and soil can be carried out using the waste heat of device
Heating, so that the present apparatus obtains higher economic benefit in the identical situation of operating temperature.
Pressure control device 82 described in the present embodiment, heating device 81, separator 5, nonaqueous dust cleaner 6, air
Processing unit 7 and anti-reverse return device are the prior art, and internal structure has been big well known with working principle, therefore not at this
It is repeated in application.
The foregoing is merely the preferred embodiments of the invention, are not intended to limit the invention creation, all at this
Within the spirit and principle of innovation and creation, any modification, equivalent replacement, improvement and so on should be included in the invention
Protection scope within.
Claims (10)
1. a kind of thermal desorption soil remediation equipment, including guide pipe (2) and reaction tube (3), the guide pipe (2) is used for reaction
It manages and launches soil to be processed in (3), the feed end of guide pipe (2) is connected with pretreatment unit (1), discharge end and reaction tube (3)
It is connected；The reaction tube (3) is for mixing hot-air and soil to be processed, feed end and hot-gas system (8) phase of reaction tube (3)
Even, discharge end is connected by conveyance conduit (4) with separator (5), it is characterised in that:
The discharge end band of the guide pipe (2) is cambered, so that having into the material in reaction tube (3) along reaction tube (3)
The initial velocity of movement；
The reaction tube (3) includes disturbance section (31) and mixing section (32), the feed end and hot-gas system of disturbance section (31)
(8) it is connected, discharge end is connected with the feed end of the mixing section (32), water conservancy diversion protrusion (311) is equipped with inside disturbance section (31),
The water conservancy diversion raised (311) for changing stream of hot air to and promote the flowing velocity of hot-air；The mixing section (32) is used for
The mixed effect of hot-air and soil is promoted, the discharge end of mixing section (32) is connected with conveyance conduit (4).
2. a kind of thermal desorption soil remediation equipment according to claim 1, it is characterised in that: the water conservancy diversion is raised (311)
It is equipped with guide face (312), transition face (313) and parting surface (314), the guide face (312) is arc slope surface, and setting is being led
Raised (311) are flowed close to the side of feed end；The transition face (313) is arcuate surface, and the top in water conservancy diversion raised (311) is arranged
Portion；The parting surface (314) is arc slope surface, is arranged in water conservancy diversion raised (311) close to the side of discharge end；The guide face
(312) open side and the open side of parting surface (314) are oppositely arranged, and the gradient of guide face (312) is less than parting surface (314)
The gradient.
3. a kind of thermal desorption soil remediation equipment according to claim 1 or 2, it is characterised in that: the mixing section (32)
Inner wall, which is equipped with, mixes raised (321) and mixing grooving (322), and the mixing grooving (322) and mixing raised (321) are along mixing
The axis direction of section (32) is alternately arranged.
4. a kind of thermal desorption soil remediation equipment according to claim 3, it is characterised in that: the mixing is raised (321)
For annular projection, the mixing grooving (322) is cyclic annular grooving.
5. a kind of thermal desorption soil remediation equipment according to claim 4, it is characterised in that: the mixing is raised (321)
Surface with mixing grooving (322) is smooth arcwall face.
6. a kind of thermal desorption soil remediation equipment according to claim 5, it is characterised in that: in the mixing section (32) most
The ratio of big channel diameter and smallest passage diameter is between 1:0.5 between 1:0.85.
7. a kind of thermal desorption soil remediation equipment according to claim 1, it is characterised in that: the guide pipe (2) it is interior
Diameter is gradually reduced along the direction of motion of soil.
8. a kind of thermal desorption soil remediation equipment according to claim 1, it is characterised in that: the separator (5)
Gaseous phase outlet is connected with the air inlet of hot-gas system (8).
9. a kind of thermal desorption soil remediation equipment according to claim 1, it is characterised in that: the conveyance conduit (4) is in
Spiral turns the outside for being wrapped in pretreatment unit (1).
10. a kind of thermal desorption soil remediation equipment according to claim 1, it is characterised in that: the delivery pipe is equipped with
One end of UTILIZATION OF VESIDUAL HEAT IN pipe, the UTILIZATION OF VESIDUAL HEAT IN pipe is connected with the shell side of conveyance conduit (4), and the other end is placed in pretreatment unit
(1) internal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910432868.1A CN110014035A (en) | 2019-05-22 | 2019-05-22 | A kind of thermal desorption soil remediation equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910432868.1A CN110014035A (en) | 2019-05-22 | 2019-05-22 | A kind of thermal desorption soil remediation equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110014035A true CN110014035A (en) | 2019-07-16 |
Family
ID=67194416
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910432868.1A Withdrawn CN110014035A (en) | 2019-05-22 | 2019-05-22 | A kind of thermal desorption soil remediation equipment |
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Application publication date: 20190716 |