CN209613791U - A kind of rotary organic polluted soil thermal desorption device of outer heat of beam with inner pipe - Google Patents
A kind of rotary organic polluted soil thermal desorption device of outer heat of beam with inner pipe Download PDFInfo
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- CN209613791U CN209613791U CN201920081277.XU CN201920081277U CN209613791U CN 209613791 U CN209613791 U CN 209613791U CN 201920081277 U CN201920081277 U CN 201920081277U CN 209613791 U CN209613791 U CN 209613791U
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Abstract
The utility model discloses a kind of rotary organic polluted soil thermal desorption devices of outer heat of beam with inner pipe, belong to contaminated site technical field of soil remediation.The device includes original soil feeding device, revolution external-heat reactor and pure land discharging device.The utility model provides a kind of with the heat conduction reinforced rotary organic polluted soil thermal desorption device of outer heat, which has biggish treating capacity and lesser processing area in the case where same units handle energy consumption.
Description
Technical field
The utility model belongs to contaminated site technical field of soil remediation, suitable for the reparation of organic contamination place soil,
More particularly to a kind of rotary organic polluted soil thermal desorption device of outer heat of beam with inner pipe.
Background technique
Soil refers to the loose surface layer that land surface has fertility, is capable of growing plant, when the harmful substance for being discharged into soil
Composition of the soil, structure and function will be caused to change when being excessively more than soil self purification activity, microbial activities is pressed down
Gradually accumulation passes through " soil → plant → human body " in the soil for system, harmful substance or its decomposition product, or passes through " soil → water
→ human body " is absorbed by the body indirectly, reaches the degree being detrimental to health, soil pollution just has occurred.
Seriously polluted place mainly includes chemical plant, insecticide factory, smeltery, gas station, chemical drum etc. at present, this
The pollutant in class place mainly based on organic contamination, can be divided into volatile organic matter according to its difference for melting boiling point again, partly wave
Hair property organic matter, persistent organism and pesticide etc..The recovery technique of this kind of contaminated soil includes burning (at cement kiln collaboration
Set), phytoremediation, biological prosthetic, chemical remediation and thermal desorption etc., wherein thermal desorption technology has that treatment effeciency is high, repairs week
The advantages that phase is short, device is removable is widely used in volatilization/half volatile organic contamination site remediation, U.S. EPA statistics display
Thermal desorption accounts for 20~30% in American-European site remediation case, is one of site remediation major technique.
Thermal desorption technology is so that the contaminated soil excavated is heated to the boiling point of target contaminant by directly or indirectly heating
More than, pollutant gasification volatilization is selectively made by control system temperature and residence time of material, makes target contaminant and soil
The separation of earth particle, removal.There are mainly two types of thermal desorption systems, and one is direct thermal desorption systems, i.e., is directly connect using hot fume
Heating soil is touched to assigned temperature, the system heat exchange efficiency is higher, but since the organic pollutant being desorbed out is directly entered flue gas
In, the treating capacity and processing difficulty of tail gas are larger, and processing cost is higher；Another kind is indirect thermal desorption system, i.e., by soil and
Hot fume separates, and by hot spiral or hollow blade reactor indirect heating soil, vent gas treatment amount is smaller, processing difficulty compared with
It is low, but since the indirect thermal desorption heat transfer efficiency of the hot spiral of the prior art is lower, while being contacted in helical rotation with soil, it wears
Seriously, high failure rate, replacement are difficult.
Patent CN201510207851.8 discloses a kind of indirect thermal desorption device of soil, with natural gas, diesel oil or biomass
Fuel is handled soil with the indirect thermal desorption device of two-part flood dragon, and first segment flood dragon is mainly dried soil, the
Two sections of flood dragons carry out thermal desorption to soil, and thermal desorption temperature is 200~650 DEG C.Patent CN201721127402.3 and
CN201621177931.X proposes a kind of hot helical reactors of indirect heat exchange, some also use external-heat auger thermal desorption machine
It is usually present as its core component since this external-heat auger thermal desorption machine is for the higher material of aqueous, oil content
Adhesion problem, the thermal efficiency is very low, and due to the limitation for the Spiral Notebook body structure that is heated, single machine treating capacity is lower, generally 1.5t/
H can only take multi-machine parallel connection when needing more high throughput, and system complex takes up a large area, and since thermal desorption device usually needs
It moves, quickly assemble, series in parallel is restricted, typically not greater than two-stage, and single set equipment disposing capacity is no more than 3t/h.
Utility model content
The outer heat that the utility model provides a kind of beam with inner pipe for defect existing for existing above-mentioned technology is rotary
Organic polluted soil thermal desorption device.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of rotary organic polluted soil thermal desorption device of outer heat of beam with inner pipe, the device include original soil charging dress
It sets, turn round external-heat reactor, pure land discharging device；
The original soil feeding device includes original soil feed inlet, feeding gas lock and the feeding spiral conveyer being sequentially connected；
The pure land discharging device includes blanking gas lock and pure land discharge port；The revolution external-heat reactor includes revolving drum
Body, shell, front end-plate and end plate, and rotating cylinder, shell, front end-plate and the end plate is closed to form heat transfer cavity；
The heat transfer cavity is divided into external cavity and internal cavity, the front baffle and rear bulkhead by front baffle and rear bulkhead
It is located at the head and tail portion of shell；The external cavity is that front baffle, rear bulkhead, shell and rotating cylinder outer wall surround
Space；The internal cavity is front baffle, rear bulkhead, front end-plate and end plate and the interior tube bank for being located at turn around inner barrel
The space of formation；
The outer gas inlet of the cylinder of external cavity is between front end-plate and rear bulkhead, before the outer exhanst gas outlet of the cylinder of external cavity is located at
Between partition and end plate；In the cylinder of internal cavity between gas inlet rear bulkhead and end plate, exhanst gas outlet in the cylinder of internal cavity
Between front end-plate and front baffle；
The both ends of said inner tube beam are connected to internal cavity after being each passed through rotating cylinder but completely cut off with soil processed；And institute
The outer cylinder wall for stating rotating cylinder is that surface is equipped with raised irregular cylinder or regular cylinder.
In technical solutions of the utility model: the protrusion is polygon facet or arc surface or oval arc surface or s shape face.In
In some preferred technical solutions: the polygon facet is arc surface or s shape face.
In some more preferably technical solutions: at least provided with 8 protrusions on the section of the rotating cylinder, and protrusion
Base width >=60 ㎜.
In some most preferred technical solutions: the interior envelope and external envelope of the rotating cylinder are circle.
In technical solutions of the utility model: the protrusion is the helical form centered on rotating cylinder central axis；It is preferred that: it is convex
The screw pitch of super helix shape is not more than rotating cylinder length.
In some specific technical solutions: spiral helicine rotating cylinder is to fix one end of rotating cylinder, the other end
Rotation, cylinder convex to form helical form, can dramatically increase the exterior surface area of cylinder, and the heat exchange of the outer flue gas of enhancing cylinder and cylinder is imitated
Fruit；And helical form concavity channel can be formed in the inner surface of cylinder, extend residence time of the soil in cylinder, in same cylinder
The longer time can be stopped under length, to increase unit time processing capacity in the case where not changing occupied area；Or
It is to shorten in same processing capacity lower shell length, so that reducing equipment under same unit time processing capacity takes up an area face
Product.
In technical solutions of the utility model: the front end of rotating cylinder and drive shaft are connected to support on preceding supporting roller component,
Rotating cylinder passes through end plate and is supported on rear supporting roller component, and drive shaft is driven by driving device to be rotated.
In some preferred technical solutions: drive shaft is sealed by conveyor front barrel and is sealed with front end-plate, rotating cylinder
It is sealed by rear cylinder body and is sealed with end plate.
In technical solutions of the utility model: said inner tube beam includes the pipe that at least one set of straight tube and elbow are connected to form
Group, straight tube are fixed after passing through tube sheet with tube sheet, and elbow is fixed with rotating cylinder after passing through rotating cylinder and is connected to internal cavity.
In technical solutions of the utility model: the interior tube bank accounts for the intracorporal useful space of revolving drum no more than 30%；It is excellent
Choosing: it is 12~20% that the interior tube bank, which accounts for the intracorporal useful space of revolving drum,.
In technical solutions of the utility model: the circumference uniform distribution of the interior tube bank and the inner wall along rotating cylinder, straight pipe wall
Face is 0.5~1.5d with a distance from rotating cylinder inner wall, wherein the d is straight tube interior diameter.
In technical solutions of the utility model: the interior tube bank is uniformly distributed along the central axis of rotating cylinder, outmost turns straight pipe wall
Face is 0.5~0.85D with a distance from rotating cylinder inner wall, and the D is rotating cylinder interior diameter.
In technical solutions of the utility model: the straight tube is at least one in spirally corrugated tube, contracting line pipe or internally finned tube
Kind；
In some preferred technical solutions: the heat transfer cavity volume is the 60~90% of rotating cylinder cavity volume；
In some more preferably technical solutions: the center line of the rotating cylinder is relative to the past discharging of casing centerline
0~3 ° of end inclination.
In technical solutions of the utility model: the inner cavity of the rotating cylinder is provided with spiral stock guide and/or lifting blade；
In some specific technical solutions: the drive shaft is hollow structure, and feeding spiral conveyer is mounted on driving
In axis, the discharge end of feeding spiral conveyer protrudes into 15~40mm of rotating cylinder.
In some specific technical solutions: the rotating cylinder uses heat-resistance stainless steel material, and external shell is fire resisting
Fibre structure；
In some specific technical solutions: the inner wall of the shell is equipped with insulating.
In some specific technical solutions: driving device includes the driving gear being connected with drive shaft and and drives
The driving motor of moving gear cooperation.
In some specific technical solutions: the original soil feeding device, pure land discharging device are connected with rotating cylinder
Logical, the pure land discharging device side of rotating cylinder is exported equipped with thermal desorption gas.
In technical solutions of the utility model: the temperature of gas inlet is 100 DEG C~600 DEG C in the cylinder.
In technical solutions of the utility model: the temperature of the outer gas inlet of the cylinder is 100 DEG C~600 DEG C.
In technical solutions of the utility model: the temperature of the outer gas inlet of the spool is higher than the temperature of gas inlet in cylinder by 50
DEG C~100 DEG C.
In technical solutions of the utility model: motor variable-frequency speed-regulating, speed adjustable range 0.1-3r/min.
In technical solutions of the utility model: preceding rolling ring is located at turn around cylinder stem, front end-plate outside, and rear rolling ring is located at turn around
Cylinder tail portion, end plate outside.
In technical solutions of the utility model: hood is mounted on rotating cylinder tail end, with connection in rotating cylinder and equipped with rotation
Turn sealing device.
In technical solutions of the utility model: reinforcing rib and manhole are located on shell, and reinforcing rib plays reinforcement structure, and manhole is used for
Maintenance.Rotating cylinder linkage section is located between conveyor front barrel sealing and preceding rolling ring.
In other technical solutions: the interior wall of the rotating cylinder is and the matched structure of outer cylinder wall or the revolution
The depressed area of the interior wall of cylinder is solid construction.
The utility model has the beneficial effects that
The utility model provides a kind of rotary organic polluted soil thermal desorption device of outer heat of beam with inner pipe, the dress
Setting has biggish treating capacity and lesser processing area in the case where same units handle energy consumption.
Detailed description of the invention
Fig. 1 is the left side view of thermal desorption device；
Fig. 2 is the front view of thermal desorption device；
Fig. 3 is thermal desorption device full sectional view；
Fig. 4 is thermal desorption device top view；
Fig. 5 is thermal desorption device right side view；
Fig. 6 is thermal desorption device 3-D view；
Fig. 7 is that thermal desorption device rotating part is faced；
Fig. 8 is thermal desorption device rotating part cross-sectional view；
Fig. 9 is thermal desorption device rotating part 3-D view.
Figure 10 is the helical form rotating cylinder of gore, in which: Figure 10 (a) is that the helical form that protrusion is gore is returned
The main view of drum body, Figure 10 (b) are the A-A cross-sectional views of Figure 10 (a).
Figure 11 is the helical form rotating cylinder of semicircle cambered surface, in which: Figure 11 (a) is that the helical form that protrusion is semicircle cambered surface is returned
The main view of drum body, Figure 11 (b) are the A-A cross-sectional views of Figure 11 (a).
Figure 12 is the helical form rotating cylinder in s shape face, in which: Figure 12 (a) is the helical form rotating cylinder that protrusion is s shape face
Main view, Figure 12 (b) is the A-A cross-sectional view of Figure 12 (a).
1-original soil feed inlet, 2-feeding gas locks, 3-feeding spiral conveyers, 4-driving devices, 5 connect for rotating cylinder
Connect section, 6-preceding supporting roller components, 7-rear supporting roller components, 8-insulatings, the outlet of 9-thermal desorption gas, 10-hoods, 11-
Shell, exhanst gas outlet in 12-cylinders, the outer exhanst gas outlet of 13-cylinders, the outer gas inlet of 14-cylinders, gas inlet in 15-cylinders, 16-
Blanking gas lock, 17-pure land discharge ports, 18-driving gears, 19-driving motors, the sealing of 20-conveyor front barrels, 21-rear cylinder bodies
Sealing, 22-preceding rolling rings, 23-rear rolling rings, 24-interior tube banks, 25-rotating cylinders, 26-reinforcing ribs, 27-manholes, 28-
Front end-plate, 29-end plates, 30-drive shafts, 31-heat transfer cavities, 32-front baffles, 33-rear bulkheads, 34-external cavities,
35-internal cavities, 36-straight tubes, 37-elbows, 38-tube sheets, 101-original soil feeding devices, 102-revolution external-heat reactions
Device, 103-pure land discharging devices.
Specific embodiment
Below with reference to embodiment, the utility model is described in further detail, but the protection scope of the utility model is not limited to
This:
Such as Fig. 1~9, a kind of rotary organic polluted soil thermal desorption device of outer heat of beam with inner pipe, which includes
Original soil feeding device 101, revolution external-heat reactor 102, pure land discharging device 103；
The original soil feeding device 101 is defeated comprising original soil feed inlet 1, feeding gas lock 2 and the feed auger being sequentially connected
Send machine 3；The pure land discharging device 103 includes blanking gas lock 16 and pure land discharge port 17；The revolution external-heat reaction
Device 102 includes rotating cylinder 25, shell 11, front end-plate 28 and end plate 29, and the rotating cylinder 25, shell 11, preceding
End plate 28 and the closing of end plate 29 form heat transfer cavity 31；
The heat transfer cavity 31 is divided into external cavity 34 and internal cavity 35 by front baffle 32 and rear bulkhead 33, it is described it is preceding every
Plate 32 and rear bulkhead 33 are located at the head and tail portion of shell；The external cavity 34 is front baffle 32, rear bulkhead 33, shell
11 and the space that surrounds of 25 outer wall of rotating cylinder；The internal cavity 35 be front baffle 32, rear bulkhead 33, front end-plate 28 and after
The space that end plate 29 and the interior tube bank 24 being located at turn around inside cylinder 25 are formed；
The outer gas inlet 14 of the cylinder of external cavity 34 is between front end-plate 28 and rear bulkhead 33, the cylinder foreign cigarette of external cavity 34
Gas outlet 13 is between front baffle 32 and end plate 29；15 rear bulkhead 33 of gas inlet and end plate in the cylinder of internal cavity 35
Between 29, exhanst gas outlet 12 is between front end-plate 28 and front baffle 32 in the cylinder of internal cavity 35；
The both ends of said inner tube beam 24 be connected to after being each passed through rotating cylinder 25 with internal cavity 35 but with soil processed every
Absolutely；
The rotating cylinder 25 is regular cylinder with the outer flue gas contact portion of cylinder.
The original soil feeding device 101, pure land discharging device 103 are connected with rotating cylinder 25, rotating cylinder 25
103 side of pure land discharging device is equipped with thermal desorption gas outlet 9；
The front end of rotating cylinder 25 and drive shaft 30 are connected to support on preceding supporting roller component 6, after rotating cylinder 25 passes through
End plate 29 is simultaneously supported on rear supporting roller component 7, and drive shaft 30 passes through the driving rotation of driving device 4；It is preferred that: before drive shaft 30 passes through
Cylinder sealing 20 is sealed with front end-plate 28, and rotating cylinder 25 is sealed by rear cylinder body sealing 21 with end plate 29.
Said inner tube beam 24 includes the pipe group that at least one set of straight tube 36 and elbow 37 are connected to form, and straight tube 36 passes through pipe
Fixed with tube sheet 38 after plate 38, elbow 37 is fixed with rotating cylinder 25 after passing through rotating cylinder 25 and is connected to internal cavity 35.
The useful space in rotating cylinder 25 shared by the interior tube bank 24 is no more than 30%；It is preferred that: the interior tube bank
The useful space in rotating cylinder 25 shared by 24 is 12~20%.
The circumference uniform distribution of the interior tube bank 24 and the inner wall along rotating cylinder 25,36 wall surface of straight tube is from rotating cylinder 25
The distance of wall surface is 0.5~1.5d, wherein the d is 36 interior diameter of straight tube.Or the interior tube bank 24 is along rotating cylinder 25
Central axis it is uniformly distributed, 36 wall surface of outmost turns straight tube is 0.5~0.85D with a distance from 25 inner wall of rotating cylinder, and the D is back
25 interior diameter of drum body.
The straight tube 36 is at least one of spirally corrugated tube, contracting line pipe or internally finned tube.
31 volume of heat transfer cavity is the 60~90% of 25 cavity volume of rotating cylinder；The center of the rotating cylinder 25
Line tilts 0~3 ° toward discharge end relative to 11 center line of shell.
The inner cavity of the rotating cylinder 25 is provided with spiral stock guide and/or lifting blade；
It is preferred that: the drive shaft 30 is hollow structure, and feeding spiral conveyer 3 is mounted in drive shaft 30, feed auger
The discharge end of conveyer 3 protrudes into 2515~40mm of rotating cylinder；
The rotating cylinder 25 uses heat-resistance stainless steel material, and external shell 11 is refractory fibre structure.
Inertia heat-carrying ball is placed in the rotating cylinder 25, the inertia heat-carrying ball material is steel ball, alloying pellet and pottery
At least one of porcelain ball, form are medicine ball or hollow sphere, and the hollow ball inside fills heat-carrying agent, the heat-carrying
Medium is fused salt.The inner wall of the shell 11 is equipped with insulating 8；Driving device 4 includes to be connected with drive shaft 30
Driving gear 18 and and driving gear 18 cooperate driving motor 19.
Parameter involved in 1 Examples 1 to 3 of table
Embodiment 1:
Organic pollutant is handled using above-mentioned apparatus, design parameter condition is shown in Table 1.
Process object:
Moisture percentage 20%, toluene, dimethylbenzene effumability organic polluted soil processing parameter:
650 DEG C of 16 temperature of gas inlet in cylinder, outer 700 DEG C of 14 temperature of the gas inlet of cylinder, when soil residence time 30min,
Restraining 15 temperature of exhanst gas outlet is 220 DEG C, and outer 13 temperature of exhanst gas outlet of cylinder is 260 DEG C, treating capacity 7.4t/h, toluene, diformazan
The initial mean concentration of benzene is 500mg/kg, and mean concentration is lower than 5.0mg/kg after processing, and removal rate has reached 99%, average
Heat soil consumption 40Nm per ton3/ h natural gas；
700 DEG C of 16 temperature of gas inlet in cylinder, outer 750 DEG C of 14 temperature of the gas inlet of cylinder, when soil residence time 30min,
Restraining 15 temperature of exhanst gas outlet is 260 DEG C, and outer 13 temperature of exhanst gas outlet of cylinder is 300 DEG C, treating capacity 7.4t/h, toluene, diformazan
The initial mean concentration of benzene is 500mg/kg, and mean concentration is lower than 1.0mg/kg after processing, and removal rate has reached 99.9%, is put down
Heat soil consumption 45Nm per ton3/ h natural gas；
Embodiment 2:
Organic pollutant is handled using above-mentioned apparatus, design parameter condition is shown in Table 1.
Moisture percentage 20%, six six six, DDTs pesticide half volatile organic polluted soil processing parameter:
700 DEG C of 16 temperature of gas inlet in cylinder, outer 750 DEG C of 14 temperature of the gas inlet of cylinder, when soil residence time 30min,
12 temperature of exhanst gas outlet is 260 DEG C in cylinder, and outer 13 temperature of exhanst gas outlet of cylinder is 300 DEG C, treating capacity 7.4t/h, six six six,
The initial mean concentration of DDTs is 300mg/kg, and mean concentration is lower than 6.0mg/kg after processing, and removal rate has reached 98%, is put down
Heat soil consumption 45Nm per ton3/ h natural gas；
750 DEG C of 16 temperature of gas inlet in cylinder, outer 800 DEG C of 14 temperature of the gas inlet of cylinder, when soil residence time 30min,
12 temperature of exhanst gas outlet is 300 DEG C in cylinder, and outer 13 temperature of exhanst gas outlet of cylinder is 340 DEG C, treating capacity 7.4t/h, six six six,
The initial mean concentration of DDTs is 300mg/kg, and mean concentration is lower than 3.0mg/kg after processing, and removal rate has reached 99%, is put down
Heat soil consumption 50Nm per ton3/ h natural gas；
Embodiment 3:
Organic pollutant is handled using above-mentioned apparatus, design parameter condition is shown in Table 1.
Moisture percentage 20%, benzanthracene, BaP multiring aromatic hydrocarbon difficulty volatility organic polluted soil processing parameter:
750 DEG C of 16 temperature of gas inlet in cylinder, outer 800 DEG C of 14 temperature of the gas inlet of cylinder, when soil residence time 30min,
12 temperature of exhanst gas outlet is 300 DEG C in cylinder, and outer 13 temperature of exhanst gas outlet of cylinder is 340 DEG C, treating capacity 7.4t/h, benzanthracene, benzene
And the initial mean concentration of pyrene is 100mg/kg, mean concentration is lower than 2.0mg/kg after processing, and removal rate has reached 98%, average
Heat soil consumption 50Nm per ton3/ h natural gas；
800 DEG C of 16 temperature of gas inlet in cylinder, outer 850 DEG C of 14 temperature of the gas inlet of cylinder, when soil residence time 30min,
12 temperature of exhanst gas outlet is 340 DEG C in cylinder, and outer 13 temperature of exhanst gas outlet of cylinder is 380 DEG C, treating capacity 7.4t/h, benzanthracene, benzene
And the initial mean concentration of pyrene is 100mg/kg, mean concentration is lower than 5.0mg/kg after processing, and removal rate has reached 95%, puts down
Heat soil consumption 55Nm per ton3/ h natural gas.
Embodiment 4~6
The condition of pollutant process is with embodiment 1, in addition to the outer cylinder wall of the rotating cylinder 25 is that surface is equipped with protrusion
Irregular cylinder.Such as Figure 10~12, the protrusion is polygon facet or arc surface or oval arc surface or s shape face, semicircle cambered surface
Or gore；At least provided with 16 protrusions on the section of the rotating cylinder 25, and base width >=60 ㎜ of protrusion；It is described
The interior envelope and external envelope of rotating cylinder 25 are circle.The protrusion is the helical form centered on 25 central axis of rotating cylinder；
And the screw pitch of raised spiral shape is not more than 25 length of rotating cylinder.Design parameter is shown in Table 2.
Parameter involved in 2 embodiment 4~6 of table
Comparative example 1
Comparative example 1 is with embodiment 1, in addition to being not provided with interior tube bank in the rotating cylinder.
Performance detection:
The treatment effect of Examples 1 to 6 and comparative example 1
。
Claims (17)
1. a kind of rotary organic polluted soil thermal desorption device of outer heat of beam with inner pipe, it is characterised in that:
The device includes original soil feeding device (101), revolution external-heat reactor (102), pure land discharging device (103)；
The original soil feeding device (101) includes original soil feed inlet (1), feeding gas lock (2) and the feed auger being sequentially connected
Conveyer (3)；The pure land discharging device (103) includes blanking gas lock (16) and pure land discharge port (17)；The revolution
External-heat reactor (102) includes rotating cylinder (25), shell (11), front end-plate (28) and end plate (29), and described
Rotating cylinder (25), shell (11), front end-plate (28) and end plate (29) closing form heat transfer cavity (31)；
The heat transfer cavity (31) is divided into external cavity (34) and internal cavity (35) by front baffle (32) and rear bulkhead (33), described
Front baffle (32) and rear bulkhead (33) be located at the head and tail portion of shell；The external cavity (34) is front baffle
(32), the space that rear bulkhead (33), shell (11) and rotating cylinder (25) outer wall surround；The internal cavity (35) be it is preceding every
Plate (32), rear bulkhead (33), front end-plate (28) and end plate (29) and the interior tube bank (24) for being located at turn around cylinder (25) inside
The space of formation；
The outer gas inlet (14) of the cylinder of external cavity (34) is located between front end-plate (28) and rear bulkhead (33), the cylinder of external cavity (34)
Outer exhanst gas outlet (13) is located between front baffle (32) and end plate (29)；In the cylinder of internal cavity (35) after gas inlet (15) every
Between plate (33) and end plate (29), exhanst gas outlet (12) is located at front end-plate (28) and front baffle (32) in the cylinder of internal cavity (35)
Between；
The both ends of the interior tube bank (24) be each passed through rotating cylinder (25) be connected to afterwards with internal cavity (35) but with soil processed
Earth isolation.
2. the rotary organic polluted soil thermal desorption device of outer heat of beam with inner pipe according to claim 1, feature
Be: the front end and drive shaft (30) of rotating cylinder (25) are connected to support on preceding supporting roller component (6), and rotating cylinder (25) is worn
Later it end plate (29) and is supported on rear supporting roller component (7), drive shaft (30) passes through driving device (4) driving rotation.
3. the rotary organic polluted soil thermal desorption device of outer heat of beam with inner pipe according to claim 2, feature
Be: drive shaft (30) is sealed by conveyor front barrel sealing (20) with front end-plate (28), and rotating cylinder (25) passes through rear cylinder body
Sealing (21) is sealed with end plate (29).
4. the rotary organic polluted soil thermal desorption device of outer heat of beam with inner pipe according to claim 1, feature
Be: said inner tube beam (24) includes the pipe group that at least one set of straight tube (36) and elbow (37) are connected to form, and straight tube (36) is worn
It is fixed with tube sheet (38) afterwards to cross tube sheet (38), elbow (37) pass through rotating cylinder (25) it is fixed with rotating cylinder (25) afterwards and with it is interior
Cavity (35) connection.
5. the rotary organic polluted soil thermal desorption device of outer heat of beam with inner pipe according to claim 1, feature
Be: the useful space in rotating cylinder (25) shared by the interior tube bank (24) is no more than 30%.
6. the rotary organic polluted soil thermal desorption device of outer heat of beam with inner pipe according to claim 1, feature
Be: the useful space in rotating cylinder (25) shared by the interior tube bank (24) is 12~20%.
7. the rotary organic polluted soil thermal desorption device of outer heat of beam with inner pipe according to claim 1, feature
Be: the circumference uniform distribution of the interior tube bank (24) and the inner wall along rotating cylinder (25), straight tube (36) wall surface is from rotating cylinder
(25) distance of inner wall is 0.5~1.5d, wherein the d is straight tube (36) interior diameter.
8. the rotary organic polluted soil thermal desorption device of outer heat of beam with inner pipe according to claim 1, feature
Be: the interior tube bank (24) is uniformly distributed along the central axis of rotating cylinder (25), and outmost turns straight tube (36) wall surface is from rotating cylinder
(25) distance of inner wall is 0.5~0.85D, and the D is rotating cylinder (25) interior diameter.
9. the rotary organic polluted soil thermal desorption device of outer heat of beam with inner pipe according to claim 1, feature
Be: straight tube (36) is at least one of spirally corrugated tube, contracting line pipe or internally finned tube.
10. the rotary organic polluted soil thermal desorption device of outer heat of beam with inner pipe according to claim 1, feature
Be: heat transfer cavity (31) volume is the 60~90% of rotating cylinder (25) cavity volume.
11. the rotary organic polluted soil thermal desorption device of outer heat of beam with inner pipe according to claim 1, feature
Be: the center line of the rotating cylinder (25) tilts 0~3 ° toward discharge end relative to shell (11) center line.
12. the rotary organic polluted soil thermal desorption device of outer heat of beam with inner pipe according to claim 1, feature
Be: the inner cavity of the rotating cylinder (25) is provided with spiral stock guide and/or lifting blade.
13. the rotary organic polluted soil thermal desorption device of outer heat of beam with inner pipe according to claim 1, feature
Be: drive shaft (30) is hollow structure, and feeding spiral conveyer (3) is mounted in drive shaft (30), feeding spiral conveyer
(3) discharge end protrudes into (25) 15~40mm of rotating cylinder.
14. the rotary organic polluted soil thermal desorption device of outer heat of beam with inner pipe according to claim 1, feature
Be: the rotating cylinder (25) uses heat-resistance stainless steel material, and external shell (11) is refractory fibre structure.
15. the rotary organic polluted soil thermal desorption device of outer heat of beam with inner pipe according to claim 1, feature
Be: the inner wall of the shell (11) is equipped with insulating (8).
16. the rotary organic polluted soil thermal desorption device of outer heat of beam with inner pipe according to claim 1, feature
Be: driving device (4) includes the driving gear (18) being connected with drive shaft (30) and and driving gear (18) cooperation
Driving motor (19).
17. the rotary organic polluted soil thermal desorption device of outer heat of beam with inner pipe according to claim 1, feature
Be: the original soil feeding device (101), pure land discharging device (103) are connected with rotating cylinder (25), rotating cylinder
(25) pure land discharging device (103) side is equipped with thermal desorption gas outlet (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920081277.XU CN209613791U (en) | 2019-01-18 | 2019-01-18 | A kind of rotary organic polluted soil thermal desorption device of outer heat of beam with inner pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920081277.XU CN209613791U (en) | 2019-01-18 | 2019-01-18 | A kind of rotary organic polluted soil thermal desorption device of outer heat of beam with inner pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020147658A1 (en) * | 2019-01-18 | 2020-07-23 | 南京工业大学 | Externally heated rotary-type organic contaminated soil thermal desorption device with heat transfer augmentation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020147658A1 (en) * | 2019-01-18 | 2020-07-23 | 南京工业大学 | Externally heated rotary-type organic contaminated soil thermal desorption device with heat transfer augmentation |
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Granted publication date: 20191112 Termination date: 20220118 |