A kind of system of fast pyrogenation junked tire
Technical field
The utility model is related to tire tread pyrolysis, and in particular to a kind of system of fast pyrogenation junked tire.
Background technology
The method of processing junked tire has the prototype transformation of the way, produces reclaimed rubber and rubber powder, burning and pyrolysis etc. at present, wherein
Pyrolytic technique be it is a kind of have very much potentiality processing junked tire method.Junked tire pyrolytic technique is in anoxic by junked tire
Or thermally decomposed in inert gas, pyrolysis gas, pyrolysis oil and charcoal residue etc. can be produced.Compared with traditional treatment method, pyrolysis
Method can not only reclaim the product of high added value, and can reclaim nearly 70% energy, with higher economy and Environmental Effect
Benefit.Junked tire pyrolysis processing technique mainly includes catalysis pyrolysis, vacuum pyrolysis, hydropyrolysis and self-heating pyrolysis etc., various works
Skill has strict demand to pretreatment of raw material and particle diameter, and obtained product is also different.
Utility model content
The utility model devises a kind of pyrolytic process of junked tire processing, and device structure is simple, technological process is short, warp
Ji is profitable.
The utility model provides a kind of junked tire fast pyrolysis systems, and the system includes:
Feed hopper, with charging aperture and discharging opening;
Heat accumulating type fast pyrolysis reactor, with pyrolysis feed entrance, pyrolysis oil gas vent and semicoke outlet, the pyrolysis
Feed(raw material)inlet is connected with the discharging opening of the feed hopper;
Shaped device is merged, with the outlet of semicoke entrance, pulverized limestone entrance, binding agent entrance and type ball, the semicoke enters
Mouth is connected with the semicoke outlet of the heat accumulating type fast pyrolysis reactor;
Calcium carbide smelting device, export with type ball entrance and calcium carbide, the type ball entrance and the shaped device that merges
The outlet of type ball is connected.
In an embodiment of the present utility model, the system also includes:
Cutting machine, with cutting material entrance and the outlet of cutting material,
Spinning machine, with the material entrance that reels off raw silk from cocoons, reel off raw silk from cocoons material outlet and steel wire outlet, material entrance and the cutting machine of reeling off raw silk from cocoons
Cutting material outlet be connected;
Pulverizer, is exported with crushed material entrance, crushed material, and the crushed material entrance is connected with the material outlet of reeling off raw silk from cocoons;
Magnetic separator, with magnetic separation material entrance, the outlet of magnetic separation material and iron powder outlet, the magnetic separation material entrance and the pulverizer
Crushed material outlet be connected, magnetic separation material outlet is connected with the pyrolysis feed entrance of the heat accumulating type fast pyrolysis reactor;
It is provided with the heat accumulating type fast pyrolysis reactor on the upside of multilayer radiant tube, the radiant tube and top is installed
Lid, the drift angle for stating top cover is 60 ° -90 °.
In an embodiment of the present utility model, the radiant tube is the round tube that nominal diameter is 200-300mm.
In an embodiment of the present utility model, the heat accumulating type fast pyrolysis reactor also includes multilayer baffle plate,
The baffle plate is inclined at the inside of the heat accumulating type fast pyrolysis reactor, and it is quick that the superiors' baffle plate is located at the heat accumulating type
At the 1/2-2/3 of the height of pyrolysis reactor.
In an embodiment of the present utility model, between the baffle plate and neighbouring two layers of radiant tube it is vertical away from
From equal.
The utility model is using heat accumulation type radiant tube as heating source, and without heat carrier, technological process has been obtained greatly
Simplify.
The cooling down high-temperature semicoke by the way of cooling down indirectly, has not only reclaimed the heat of high-temperature semi-coke, has also helped at any time
Carry out discharge and transport and carry out next step process etc..
Compressing after semicoke, lime stone and binding agent are mixed, for smelting calcium carbide, the processing for solving semicoke is difficult
Topic, drastically increases economic benefit.
Pyrolysis reactor that the utility model is used pyrolysis effect is good, therefore is not required for pyrolysis feed and needs with very little
Particle diameter, reduce processing cost of the early stage to raw material.
Brief description of the drawings
A kind of structural representation of the system for fast pyrogenation junked tire that Fig. 1 provides for the embodiment of the utility model one.
In figure:1st, feed hopper;2nd, feeding screw;3rd, heat accumulating type fast pyrolysis reactor;4th, spiral discharging device;5th, follow
Ring pump;6th, storage tank;7th, shaped device is merged;8th, closed type calcium carbide furnace;9th, cutting machine;10th, spinning machine;11st, pulverizer;12、
Magnetic separator.
Embodiment
Below in conjunction with drawings and examples, embodiment of the present utility model is described in more details, with
Just it better understood when the advantage of scheme of the present utility model and its various aspects.However, specific implementations described below side
Formula and embodiment are only the purposes of explanation, rather than to limitation of the present utility model.
It should be noted that it must be heat accumulating type without heat carrier radiant tube that " radiant tube " in the utility model, which refers to,.Secondly, art
The orientation or position relationship of the instructions such as language " on ", " under ", "left", "right" are based on orientation shown in the drawings or position relationship, only
Be for the ease of description the utility model, rather than require the utility model must with specific azimuth configuration and operation, therefore,
It is not intended that to limitation of the present utility model.
As shown in figure 1, the tire tread pyrolysis system that the utility model is provided includes:Feed hopper 1, feeding screw 2,
Heat accumulating type fast pyrolysis reactor 3 (also abbreviation reactor in the application), spiral discharging device 4, circulating pump 5, storage tank 6, fusion
Shaped device 7, closed type calcium carbide furnace 8, cutting machine 9, spinning machine 10, pulverizer 11, magnetic separator 12.
Feed hopper 1 has charging aperture and discharging opening.
With reference to Fig. 1, the heat accumulating type fast pyrolysis reactor 3 that the utility model is used include reactor body, radiant tube and
Baffle plate.Reactor body is provided with pyrolysis feed entrance, semicoke outlet, fuel gas inlet, air intake, exhanst gas outlet and pyrolysis
Oil gas vent, wherein, pyrolysis feed entrance is connected with the tire tread outlet of feed hopper 1.Radiant tube is multiple, horizontal Tongfang
To the different height being intervally arranged in reactor body, the radiant tube of adjacent height layer is staggered in arrangement.Baffle plate is multiple, and baffle plate inclines
Tiltedly it is arranged between two layers of radiant tube.Top cover is installed above radiant tube.
The heat storage type pyrolysis reactor that the utility model is provided employs heat accumulating type without heat carrier radiant tube heating technique, nothing
Gas, solid heat carrier are needed, the calorific value of pyrolysis gas is improved, the structure of reactor is simple, floor space is small, it is easy to industrialize.
The top cover of the upside of radiant tube can effectively act as protecting radiant tube not washed away by by material, service life of radiant tubes
Service life.The shape of top cover need not simultaneously be limited, and it is preferably shaped to, and Open Side Down and with a drift angle, so setting can
Avoid tire tread from being trapped on top cover, drainage can also be played to tire tread.The angle of drift angle mainly influences tire
Tyre surface residence time on top cover.Drift angle is too big, and tire tread is easily stacked on top cover;Too small, tire tread is in top cover
On residence time it is short, pyrolysis effect it is bad.The long effective profit that can influence to radiate tubular heat of the width of the vertical cross-section of top cover
With the too short effect to dispersed material is little.The angle of drift angle is preferably 60 ° -90 °, and the width of the vertical cross-section of top cover is preferred
To radiate 1.1-1.5 times of pipe diameter.
Tire tread can be disperseed, if scattered material after radiant tube from top to bottom from entrance enters in stove
It then can largely be fallen without slowing down or changing direction from the space in the middle of two radiant tubes, both reduce wall heat transfer efficiency
Residence time of the material in reactor is shortened again, if it is desired to pyrolysis time of the increase material in stove must then increase instead
Answer the height of device, increase floor space and investment, benefit reduction.Found by simulating, baffle plate energy is added between two layers of radiant tube
Distribution of the improvement effectively to material in reactor 3, makes it fully break up, maximum area allow tire tread participate in stove in
Heat transfer.
Tire tread starts to fall, encounters after baffle plate and top cover, upspring, then fallen again after charging aperture entrance;Wheel
Tire tread often encounters a baffle plate and top cover, that is, is bound to certain altitude, and its falling speed is reduced, therefore, adds tire
Residence time of the tyre surface in pyrolysis reactor.Moreover, baffle plate and top cover also act as the drainage to tire tread, add
The distance that tire tread is moved in reactor body, this can also increase residence time of the tire tread in pyrolysis reactor.
Therefore, add after baffle plate and top cover, the height of reactor can be reduced.If not changing the height of reactor body, add
Plus after baffle plate and top cover, the vertical interval of radiant tube can be increased, so as to reduce the quantity of radiant tube in reactor.In addition,
Baffle plate can also play a part of breaing up material, improve the pyrolysis effect of tire tread.
The material of baffle plate and top cover, preferably metal, the heat conductivity of metal are good, can improve the effect of tire tread pyrolysis
Really.
The particular location of baffle plate, shape need not be simultaneously particularly limited to.It is neighbouring in order to preferably play a part of drainage
Two layers of baffle plate is preferably staggered in arrangement.Baffle plate can be arranged as required to above or below certain layer of radiant tube, and baffle plate is most
Best placement is the middle of two layers of radiant tube, i.e. the vertical range between two layers of radiant tube up and down is equal.
As shown in figure 1, baffle plate is preferably disposed on the middle and lower part of reactor body, it is high that the superiors' baffle plate is located at reactor body
At the 1/2-2/3 of degree.
Can be by two baffle plate composition baffle plate assemblies that Open Side Down, the angle of the opening is preferably 60 ° -90 °;Also it will can keep off
One end of plate is connected on the madial wall of reactor body, and baffle plate forms 15 ° -60 ° of angle with reactor body madial wall.Fig. 1
Shown reactor 3 includes both set-up modes, it is necessary to which explanation, reactor 3 can only include one of which set-up mode.
As shown in figure 1, above-mentioned baffle plate assembly is preferably provided at the top in the space between two radiant tubes, its optimum position
Equal, energy for the horizontal range between two radiant tubes of the surface in the space between two radiant tubes, i.e. baffle plate assembly and this
Ensure that the tire tread rested on baffle plate is heated evenly.
The length of baffle plate is preferably 1-2 times of the diameter of radiant tube.The length of baffle plate mainly influences tire tread in baffle plate
On the movement in reactor of residence time and tire tread track.The length of baffle plate is longer, and tire tread is on baffle plate
Residence time it is longer, but tire tread can not uniformly be distributed to lower floor's radiant tube;The length of baffle plate is shorter, and tire tread exists
Residence time on baffle plate is fewer.
With reference to Fig. 1, according to embodiment of the present utility model, spiral charging is also associated between reactor 3 and loading hopper 1
Device 2, the semicoke outlet of reactor 3 is connected with spiral discharging device 4.Feed hopper 1 and feeding screw 2 are used to send tire tread
Enter in reactor 3, the solid product that spiral discharging device 4 is used to produce after tire tread is pyrolyzed is transported to next workshop section.Spiral
Feeder 2 and spiral discharging device 4 are not necessary device, and visual field condition and specific technique decide whether to addition.
Spiral discharging device 4 is also associated with circulating pump 5, with cooling medium in circulating pump 5 and the high temperature discharged from reactor 3
Semicoke exchanges heat, cooling down high-temperature semicoke, and reclaims heat.Circulating pump 5, can be according to circumstances nor the necessary device of the utility model
Increase and decrease.
As shown in figure 1, spiral discharging device 4 is connected with merging shaped device 7, semicoke, lime stone and binding agent are being fused into
Shaping ball is pressed after being well mixed in type device 7, then is sent in closed type calcium carbide furnace 8 and is smelted, calcium carbide is prepared.
Radiant tube is the round tube that nominal diameter is 200-300mm, and the level interval of two adjacent radiant tubes of left and right is
200-400mm, the vertical spacing of two neighbouring radiant tubes is 500-1200mm.
The height of reactor body is that 5-20m, width (width of its inwall) are that 2-6m, length (length of its inwall) are
The number of plies of radiant tube is 10-25 layers in 5-15m, reactor body.Fuel gas inlet and air intake are connected with radiant tube respectively.
As shown in figure 1, pyrolysis oil gas comes out from top right side portion, stored into storage tank 6, it is otherwise utilized.
As shown in figure 1, cutting machine 9, spinning machine 10, pulverizer 11 and magnetic separator 12 are additionally provided with before feed hopper 1, these dresses
It is not the necessary device of system to put, and can be increased and decreased as needed.
The circle mouth of damaged tire is cut down, then removed steel wire therein with spinning machine 15, the size-reduced powder of machine 16 of tyre surface
It is broken into 1-10mm strips or bulk.The tire tread after processing, feeding charging is expected after the iron powder that magnetic separator 17 removes the inside
In bucket 1, sent into through conveying worm 2 in reactor 3.
Heat accumulation type radiant tube is evenly arranged in reactor 3, radiant tube Cross section Design advantageously reduces material into circle
Accumulation, realizes that material is uniform in the reactor and falls.Material residence time in pyrolysis reactor is arranged by reactor
Plate washer is adjusted, and the residence time is adjusted according to the shape size and angle of arrangement plate washer.Radiant tube takes heat accumulating type, utilizes spoke
The temperature difference penetrated on pipe frequently quick tangential mode, single radiant tube is not more than 30 DEG C, makes it to provide uniform to pyrolysis
Stable temperature field.
Semicoke after pyrolysis is discharged by spiral discharging device 4, has recirculated cooling water to carry out partition in the pipe of spiral discharging device 4
Heat exchange cooling, high-temperature semi-coke by circulating cooling medium cool down after go into cold conditions semicoke.
Cold conditions semicoke forms mixture as one of raw material together with powdered lime stone, binding agent, by obtained mixture
Forming processes are carried out, so as to obtain type ball;Obtained type ball is added in closed type calcium carbide furnace 8, at 1300-1700 DEG C
At a high temperature of smelt, prepare calcium carbide.
The pyrolysis oil gas that pyrolysis is produced is delivered in storage tank 6 and stored.
Below with reference to specific embodiment, the utility model is illustrated.Institute's taking technique condition value in following embodiments
It is exemplary, its desirable number range is as shown in foregoing utility model content.Detection method used in following embodiments
It is the conventional detection method of the industry.
Embodiment
Junked tire is handled using the system shown in Fig. 1.In reactor 3, it is made up of that Open Side Down two baffle plates
The angle of opening of baffle plate assembly be 90 °, the angle of baffle plate and reactor body madial wall formation is 60 °, the drift angle of top cover
For 80 °, the width of the vertical cross-section of top cover is 330mm, and the length of baffle plate is 450mm, and it is that nominal diameter is that radiant tube, which is,
300mm round tube, the level interval of two adjacent radiant tubes of left and right is 400mm, neighbouring two radiant tubes it is vertical between
Away from for 1200mm.The height of reactor body is that 20m, the width of inwall are that 6m, the length of inwall are 15m, there is 20 layers of radiant tube.
Pyrolytic process is specific as follows:
The circle mouth of damaged tire is cut down, then removed steel wire therein with spinning machine 15, the size-reduced powder of machine 16 of tyre surface
It is broken, then with the iron powder inside the removal of magnetic separator 17, choose in 1-10mm strips or block tire tread, feeding feed hopper 1, warp
In the feeding reactor 3 of feeding screw 2.
The independent temperature control of every radiant tube, reactor is from top to bottom provided with three areas:Drying and dehydrating area, pyrolysis reaction region and half
Jiao's generation area.Each lead into fuel gas and air into radiant tube, by the temperature control in drying and dehydrating area 700 DEG C, pyrolysis it is anti-
Answer the temperature in area in 650 DEG C of control, the temperature control of semicoke maturation zone is at 550 DEG C.Tire tread passes sequentially through dry from top to bottom
Dry drying zone, pyrolysis reaction region and semicoke generation area, complete pyrolytic process.
The pyrolysis oil gas that pyrolysis is produced is delivered in storage tank 6 and stored.Semicoke after pyrolysis is discharged by spiral discharging device 4,
There is recirculated cooling water to carry out septate heat transfer cooling in the pipe of spiral discharging device 4, high-temperature semi-coke is after circulating cooling medium is cooled down
Go into cold conditions semicoke.Cold conditions semicoke forms mixture as one of raw material together with powdered lime stone, pitch, by obtained mixing
Thing carries out forming processes, so as to obtain type ball;Obtained type ball is added in closed type calcium carbide furnace 8, at 1300 DEG C
Smelted under high temperature, prepare calcium carbide.
Pyrolysis can also produce flue gas, and flue gas is discharged outside reactor body from exhanst gas outlet, flue gas and meeting after air heat-exchange
It is cooled to 200 DEG C or so.Flue gas after cooling is used to dry the tire tread for entering reactor 3, so can further be improved
Reactor efficiency and efficiency of combustion.
The specific technological parameter of the present embodiment is see table 1.Table 2 is the material balance table of the present embodiment.
The technological parameter of table 1
The material balance table of table 2
As known from Table 2, the system that the utility model is provided can effective pyrolisis of tires tyre surface.
In summary, the utility model is using heat accumulation type radiant tube as heating source, and without heat carrier, technological process is obtained
Great simplification.
The cooling down high-temperature semicoke by the way of cooling down indirectly, has not only reclaimed the heat of high-temperature semi-coke, has also helped at any time
Carry out discharge and transport and carry out next step process etc..
Compressing after semicoke, lime stone and binding agent are mixed, for smelting calcium carbide, the processing for solving semicoke is difficult
Topic, drastically increases economic benefit.
Pyrolysis reactor that the utility model is used pyrolysis effect is good, therefore is not required for pyrolysis feed and needs with very little
Particle diameter, reduce processing cost of the early stage to raw material.
The heat storage type pyrolysis reactor that the utility model is provided employs heat accumulating type without heat carrier radiant tube heating technique, nothing
Gas, solid heat carrier are needed, the calorific value of pyrolysis gas is improved, the structure of reactor is simple, floor space is small, it is easy to industrialize.
Secondly, baffle plate is provided with reactor, baffle plate can increase tire tread residence time in pyrolysis reactor.Cause
This, after addition baffle plate, the height of reactor can be reduced.If not changing the height of reactor body, after addition baffle plate, it will can radiate
The vertical interval of pipe is increased, so as to reduce the quantity of radiant tube in reactor.Moreover, baffle plate, which can also be played, breaks up material
Effect, improves the pyrolysis effect of tire tread.In addition, being provided with top cover above radiant tube, top cover can effectively act as protecting spoke
Penetrate pipe not washed away by by material, the service life of service life of radiant tubes.
It should be noted that each embodiment above by reference to described by accompanying drawing is only to illustrate the utility model rather than limit
Scope of the present utility model is made, it will be understood by those within the art that, do not departing from spirit of the present utility model and model
The modification carried out on the premise of enclosing to the utility model or equivalent substitution, all should cover within the scope of the utility model.
In addition, unless stated otherwise, then all or part of of any embodiment can combine the whole or one of any other embodiment
Part is used.