A kind of moving bed pyrolysis reactor
Technical field
The utility model is related to pyrolysis reactor, and in particular to a kind of moving bed pyrolysis reactor.
Background technology
Modern Coal-based Chemical is the high-efficiency cleaning trans-utilization for realizing the carbon-containing fuels such as low-order coal, has developed various comprehensive coals
Chemical Engineering Technology, pyrolysis-burning decoupling, pyrolysis-chemicals decoupling, pyrolysis-gasification decouple etc., but really realize it is industrialized not
It is many, encounter various technical barrier during amplifying to industrialization from pilot scale.Wherein especially with pyrolysis reactor design, follow-up net
Change handling process especially prominent.Some gas retorts can only be used for being pyrolyzed block oil shale and coal, and small particle material cannot be utilized, money
Source utilization rate is low, and granular material is because that cannot utilize and bulk deposition;The type of furnace with gas as heat carrier, because condensate recovery system is huge
Greatly, pyrolysis gas calorific value is low, the low problem of tar yield, it is difficult to which further genralrlization is demonstrated;The type of furnace with solid as heat carrier, then deposit
Uniformly mix in raw material and heat carrier, the problems such as separation, and limit its further development.
Utility model content
To solve the above problems, the moving bed pyrolysis that the utility model provides a kind of powdered carbonaceous fuel pyrolysis react
Device.
A kind of fast pyrolysis reactor that the utility model is provided, the moving bed pyrolysis reactor includes reactor sheet
Body, radiant tube and multiple metal baffle components;
The radiant tube is multiple, and the equidirectional different height being intervally arranged in the reactor body of level is adjacent
The radiant tube of height layer is staggered in arrangement;
The metal baffle component is multiple, and the metal baffle component includes horizontal baffle and swash plate, the metal gear
Board component is located at corresponding radiant tube top, and the vertical projection of the metal baffle component covers corresponding radiant tube.
Further, the horizontal baffle and the vertical range of radiation tube hub nearest below are the radiation pipe diameter
1-1.5 times.
Further, the radiant tube includes the first radiant tube, the second radiant tube, the 3rd radiant tube, the metal baffle
Component includes the first metal baffle component and the second metal baffle component, and the horizontal baffle includes first level baffle plate, described
Swash plate includes the first swash plate and the second swash plate;
The first metal baffle component is formed by connecting by a first level baffle plate and two first swash plates,
The first level baffle plate is located at the lower section of first swash plate, and the first metal baffle component is isosceles triangle;
The top of the first metal baffle component is connected with the bottom of first radiant tube;Second radiant tube and
3rd radiant tube is located in same level, and is covered by the vertical projection of the first metal baffle component;
The second metal baffle component include two second swash plates, the second metal baffle component opening to
Under;Two one end of second swash plate are connected, and form the apex angle α of the second metal baffle component1;
The first radiant tube top is provided with the second metal baffle component, first radiant tube and described second
Metal baffle component is connected, and is covered by the vertical projection of the second metal baffle component.
Further, the apex angle α of the first metal baffle component2It is 15 ° -60 °.
Further, the apex angle α1It it is 60 ° -90 °, the width of the vertical section of the second metal baffle component is institute
State the first radiation pipe diameter 1.1-1.5 times.
Further, the radiant tube includes also the 4th radiant tube, and the metal baffle component also includes what is occurred in pairs
3rd metal baffle component, the horizontal baffle also includes the second horizontal baffle, and the swash plate also includes the 3rd swash plate;
The 3rd metal baffle component is formed by connecting by second horizontal baffle and the 3rd swash plate,
Second horizontal baffle is in the lower section of the 3rd swash plate;
One end of one end of second horizontal baffle and the 3rd swash plate respectively with the inner side of the reactor body
Wall is connected, and the other end of second horizontal baffle is connected with the other end of the 3rd swash plate and forms angle α3;
4th radiant tube is covered by the vertical projection of the 3rd metal baffle component.
Further, the angle α3Angular range be 40 ° -70 °.
Further, the horizontal length of second horizontal baffle is the 1/3-1/2 of the width of the reactor body.
Further, the radiant tube also includes the 5th radiant tube, and the metal baffle component also keeps off including the 4th metal
Board component, the swash plate includes the 4th swash plate;
The 4th metal baffle component include two the 4th swash plates, the 4th metal baffle component opening to
Under;Two one end of the 4th swash plate are connected, and form the apex angle α of the 4th metal baffle component4;
5th radiant tube is connected with the 4th metal baffle component, and by the perpendicular of the 4th metal baffle component
Covered to projection.
Further, the apex angle α4It it is 60 ° -90 °, the width of the vertical section of the 4th metal baffle component is institute
State the 5th radiation pipe diameter 1.1-1.5 times.
The moving bed pyrolysis reactor that the utility model is provided can effectively be pyrolyzed powdered carbonaceous fuel.
The moving bed 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 improve, the structure of reactor is simple, floor space is small, it is easy to industrialize.
Secondly, metal baffle component is provided with reactor, metal baffle component can increase carbon-containing fuel in pyrolytic reaction
Residence time in device.Therefore, after addition metal baffle component, the height of reactor can be reduced.If not changing reactor body
Height, after addition metal baffle component, the vertical interval of radiant tube can be increased, so as to radiant tube in reactor can be reduced
Quantity.And, metal baffle component can also effectively act as protecting radiant tube not by being washed away by material, and service life of radiant tubes makes
Use the life-span.Additionally, metal baffle component may also operate as breaing up the effect of material, the pyrolysis effect of carbon-containing fuel is improved.
Brief description of the drawings
Fig. 1 is a kind of structural representation of moving bed pyrolysis reactor in embodiment;
Fig. 2 is the partial enlarged drawing in Tu1Zhong A areas.
In figure:1st, feed hopper;2nd, feeding screw;3rd, spiral discharging device;41st, reactor body;421st, the first radiation
Pipe;422nd, the second radiant tube;423rd, the 3rd radiant tube;424th, the 4th radiant tube;425th, the 5th radiant tube;4311st, first level
Baffle plate;4312nd, the first swash plate;4321st, the second swash plate;4331st, the second horizontal baffle;4332nd, the 3rd swash plate;4341st, the 4th is oblique
Plate;44th, fuel gas inlet;45th, air intake;46th, exhanst gas outlet;47th, oil gas vent.
Specific embodiment
Below in conjunction with drawings and Examples, specific embodiment of the present utility model is described in more details, with
Just 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 descriptive purposes, rather than to limitation of the present utility model.
It should be noted that " horizontal baffle " in the utility model refer to must be horizontal positioned metal baffle, " swash plate "
Refer to it must is tilted-putted metal baffle, it must be heat accumulating type without heat carrier radiant tube that " radiant tube " refers to.Next, term " on ",
The orientation or position relationship of the instructions such as D score, "left", "right" are based on orientation shown in the drawings or position relationship, merely to just
In description the utility model, rather than requiring that the utility model must be with specific azimuth configuration and operation, it is thus impossible to understand
It is to limitation of the present utility model.Additionally, the term " first ", " second ", " the 3rd ", " the 4th " in the utility model or "
Five " it is only used for describing purpose, and it is not intended that indicating or implying relative importance or imply to indicate indicated technical characteristic
Quantity, thus, defining " first ", " second ", " the 3rd ", " the 4th " or the feature of " the 5th " can express or impliedly wrap
Include one or more this feature.
The utility model provides a kind of moving bed pyrolysis reactor () in the utility model also referred to as " reactor ".Ginseng
See Fig. 1, the moving bed pyrolysis reactor is explained according to embodiment of the present utility model, the reactor includes:Instead
Answer device body 41, radiant tube, metal baffle component, fuel gas inlet 44, air intake 45, exhanst gas outlet 46, oil gas vent 47,
Charging aperture and discharging opening.Radiant tube is multiple, and level is equidirectional to be intervally arranged in the different height of reactor body 41, adjacent height
The radiant tube for spending layer is staggered in arrangement.Metal baffle component is multiple, and metal baffle component includes that horizontal baffle and swash plate metal keep off
Board component is located at corresponding radiant tube top, and the vertical projection of metal baffle component covers corresponding radiant tube.Reactor body
41 are provided with charging aperture, discharging opening, fuel gas inlet 44, air intake 45, exhanst gas outlet 46 and oil gas vent 47.
The moving bed 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 improve, the structure of reactor is simple, floor space is small, it is easy to industrialize.
Referring to Fig. 2, according to embodiment of the present utility model, radiant tube include the first radiant tube 421, the second radiant tube 422,
3rd radiant tube 423, the 4th radiant tube 424 and the 5th radiant tube 425, baffle plate include the first metal baffle component, the second metal
Baffle plate assembly, the 3rd metal baffle component and the 4th metal baffle component.First metal baffle component is kept off by a first level
Plate 4311 and two the first swash plates 4312 are formed by connecting, and the second metal baffle component includes two the second swash plates 4321, the 3rd gold medal
Category baffle plate assembly is formed by connecting by second horizontal baffle 4331 and the 3rd swash plate 4332, the 4th metal baffle component bag
Include two the 4th swash plates 4341.
According to embodiment of the present utility model, the second metal baffle component and the 4th metal baffle component can only have two
Four swash plates 4341 are constituted, and also can again add other baffle plates, as shown in Figure 2.
In order to illustrate conveniently, three layers of radiant tube shown in Fig. 2 are designated as ground floor radiant tube, second layer radiation respectively
Pipe and third layer radiant tube.It can be seen that ground floor radiant tube includes two the 5th radiant tubes 425 and first radiant tube
421, second layer radiant tube includes second radiant tube 422 and the 3rd radiant tube 423, and third layer radiant tube includes two
4th radiant tube 424 and first radiant tube 421.
According to embodiment of the present utility model, except the 4th radiant tube 424 must be the spoke that is adjacent to reactor body 41
Penetrate that pipe is outer, the particular location of remaining radiant tube and metal baffle component, shape need not simultaneously be particularly limited to.The material of baffle plate assembly
Matter for metal be reason be metal heat conductivity it is good, can improve carbon-containing fuel pyrolysis effect.
According to embodiment of the present utility model, every layer of species of radiant tube also and need not be particularly limited to, and radiant tube can be only
There are the first radiant tube 421, the second radiant tube 422 and the 3rd radiant tube 423, now corresponding metal baffle component is the first metal
Baffle plate assembly and the second metal baffle component.Radiant tube can also only have the 4th radiant tube 424 that occur in pairs, now corresponding gold
Category baffle plate assembly is the 3rd metal baffle component.On the basis of both, radiant tube can also increase by the 5th radiant tube 425, correspondence
Metal baffle component be the 4th metal baffle component.Certainly, these four radiant tubes and these four metal baffle components have is
Optimal selection.
Referring to Fig. 2, the top of the first metal baffle component is connected with the bottom of the first radiant tube 421;Second radiant tube 422
It is located in same level with the 3rd radiant tube 423, and is covered by the vertical projection of the first metal baffle component.Second metal keeps off
Open Side Down for board component, and two one end of the second swash plate 4321 are connected, and form the apex angle α of the second metal baffle component1;First
The top of radiant tube 421 is provided with the second metal baffle component, and the first radiant tube 421 is connected with the second metal baffle component, and
Covered by the vertical projection of the second metal baffle component.4th radiant tube 424 is covered by the vertical projection of the 3rd metal baffle component
Lid;The madial wall of one end of second horizontal baffle 4331 and one end of the 3rd swash plate 4332 respectively with reactor body 41 is connected,
The other end of the second horizontal baffle 4331 and the other end of the 3rd swash plate 4332 are connected and form the folder of the 3rd metal baffle component
Angle α3.Open Side Down for 4th metal baffle component, and two one end of the 4th swash plate 4341 are connected, and form the 4th metal baffle group
The apex angle α of part4;The top of the 5th radiant tube 425 is provided with the 4th metal baffle component, the 5th radiant tube 425 and the 4th metal
Baffle plate assembly is connected, and is covered by the vertical projection of the 4th metal baffle component.
Carbon-containing fuel starts to fall from after charging aperture entrance, after encountering baffle plate, is upspring, and then falls again;Carbon-containing fuel
Often encounter a swash plate, that is, be bound to certain altitude, its falling speed is reduced, therefore, increased carbon-containing fuel anti-in pyrolysis
Answer the residence time in device.And, swash plate also acts as the drainage to carbon-containing fuel, increased carbon-containing fuel in reactor sheet
Internal mobile distance, this can also increase residence time of the carbon-containing fuel in pyrolysis reactor.
Therefore, after addition metal baffle component, the height of reactor can be reduced.If not changing the height of reactor body,
After addition metal baffle component, the vertical interval of radiant tube can be increased, so as to the quantity of radiant tube in reactor can be reduced.Its
Secondary, swash plate can also effectively act as protecting radiant tube not receive to be washed away by material, the service life of service life of radiant tubes.Additionally, tiltedly
Plate may also operate as breaing up the effect of material, improve the pyrolysis effect of carbon-containing fuel.
Referring to Fig. 2, in the first metal baffle component and the 3rd metal baffle component, it is corresponding that horizontal baffle is all located at its
The lower section of swash plate, the effect of horizontal baffle is support swash plate.
According to embodiment of the present utility model, α1Angle and need not be particularly limited to, inventor find, α1Angle it is excellent
Elect 60 ° -90 ° as.α1Angle mainly influence carbon-containing fuel residence time on the second swash plate 4321.α1It is too big, carbon-containing fuel
Easily it is stacked on the second swash plate 4321;α1Too small, residence time of the carbon-containing fuel on the second swash plate 4321 is short, is pyrolyzed effect
It is bad.
According to embodiment of the present utility model, the width d1 of the vertical section of the second metal baffle component simultaneously need not be special
Limit, as long as more than the diameter of the first radiant tube 421.Inventor's discovery, length most preferably first radiant tube 421 of d1
1.1-1.5 times of diameter, the long effective utilization that can influence to radiate tubular heat, the too short effect to dispersed material is little.
According to embodiment of the present utility model, the apex angle α of the first metal baffle component2Angle and need not especially limit
Fixed, inventor has found, α2Angle be preferably 15 ° -60 °.α2Angle mainly influence carbon-containing fuel on the first swash plate 4312
Residence time.α2Too big, carbon-containing fuel is also easily stacked on the first swash plate 4312;α1Too small, carbon-containing fuel is in the first swash plate
Residence time on 4312 is short, and pyrolysis effect is bad.
According to embodiment of the present utility model, first level baffle plate 4311 is away from the second radiant tube 422 or the 3rd radiant tube 423
Center vertical range e1 and need not be particularly limited to, inventor has found, e1 most preferably the second radiant tubes 422 or the 3rd radiation
1-1.5 times of the diameter of pipe 423.
According to embodiment of the present utility model, α3Angle and need not be particularly limited to, inventor find, α3Angle it is excellent
Elect 40 ° -70 ° as.α3Angle mainly influence carbon-containing fuel residence time on the 3rd swash plate 4332.α3It is too big, carbon-containing fuel
Also easily it is stacked into the 3rd swash plate 4332;α3Too small, residence time of the carbon-containing fuel on the 3rd swash plate 4332 is short, is pyrolyzed effect
It is bad.
According to embodiment of the present utility model, the horizontal length f of the second horizontal baffle 4331 need not simultaneously be particularly limited to, hair
A person of good sense has found that the optimum length of the horizontal length f of the second horizontal baffle 4331 is the width (width of its inwall of reactor body 41
Degree) 1/3-1/2.
Referring to Fig. 1, the 3rd metal baffle component may be provided above or below certain layer of radiant tube, and its particular location is not
Need to limit, can be configured by actual demand, its optimum position is between two-layer radiant tube.
According to embodiment of the present utility model, when the 3rd metal baffle component is located at the 4th 424 top of radiant tube, second
The vertical range e2 at center of the horizontal baffle 4331 away from the 4th radiant tube 424 need not simultaneously be particularly limited to, and inventor has found that e2 is most
1-1.5 times of the good diameter for being the 4th radiant tube 424.
According to embodiment of the present utility model, α4Angle and need not be particularly limited to, inventor find, α4Angle it is excellent
Elect 60 ° -90 ° as.α4Angle mainly influence carbon-containing fuel residence time on the 4th swash plate 4341.α4It is too big, carbon-containing fuel
Easily it is stacked on the 4th swash plate 4341;α2Too small, residence time of the carbon-containing fuel on the 4th swash plate 4341 is short, is pyrolyzed effect
It is bad.
According to embodiment of the present utility model, the width d2 of the vertical section of the 4th metal baffle component simultaneously need not be special
Limit, as long as more than the diameter of the 5th radiant tube 425.Inventor's discovery, length most preferably the 5th radiant tube 425 of d2
1.1-1.5 times of diameter, the long effective utilization that can influence to radiate tubular heat, the too short effect to dispersed material is little.
Referring to Fig. 1, according to embodiment of the present utility model, the charging aperture of reactor is connected with one end of feeding screw 2,
The other end of feeding screw 2 is connected with feed hopper 1;The discharging opening of reactor is connected with spiral discharging device 3.Feed hopper 1
It is used in powdered carbonaceous fuel feeding reactor with feeding screw 2, spiral discharging device 3 is produced after being used to be pyrolyzed carbon-containing fuel
Raw solid product is transported to next workshop section.Feed hopper 1, feeding screw 2 and spiral discharging device 3 are not necessary device,
Visual field condition and specific technique decide whether to addition.
According to embodiment of the present utility model, the diameter and shape of radiant tube need not simultaneously be limited, and nominal diameter is 200-
The round tube of 300mm is optimal selection.
According to embodiment of the present utility model, also without restriction, it is most for the level interval of two adjacent radiant tubes of left and right
Good spacing is 200-400mm.
According to embodiment of the present utility model, also without restriction, it is most for the vertical spacing of neighbouring two radiant tubes
Good spacing is 500-1200mm.
According to embodiment of the present utility model, the optimum height of reactor body 41 is 5-20m, optimum width (its inwall
Width) for 2-6m, optimum length (length of its inwall) be 5-15m, the optimal number of plies of radiant tube is in reactor body 41
10-25 layers.Fuel gas inlet 44 and air intake 45 are connected with radiant tube respectively.
Referring 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 by following embodiments
It is the conventional detection method of the industry.
Embodiment
The moving bed pyrolysis reactor provided with the utility model is pyrolyzed to Hunchun lignite, the composition of the Hunchun lignite
Analysis is as shown in table 1, and the structural representation of moving bed pyrolysis reactor used is as shown in Figure 1.Wherein, α1It is 70 °, α2For
40 °, α3It is 60 °, α4It it is 70 °, d1 is 330mm, d2 is 330mm, and e1 is 300mm, and e2 is 300mm, and f is 2m, and radiant tube is is
Nominal diameter is the round tube of 300mm, and the level interval of two adjacent radiant tubes of left and right is 400mm, two neighbouring radiation
The vertical spacing of pipe is 1200mm.The height of reactor body 41 is 20m, the width of inwall is 6m, the length of inwall is 15m,
There are 25 layers of radiant tube.
The detailed process of Hunchun lignite pyrolysis is as follows:
By in Hunchun lignite feeding feed hopper 1, enter in reactor through feeding screw 2.Every radiant tube is individually controlled
Temperature, reactor is provided with three areas from top to bottom:Drying and dehydrating area, pyrolysis reaction region and semicoke generation area.Toward radiant tube respectively
Fuel gas and air are passed through, the temperature by the temperature control in drying and dehydrating area in 700 DEG C, pyrolysis reaction region is controlling 600 DEG C, half
The temperature control of burnt maturation zone is at 550 DEG C.Hunchun lignite passes sequentially through drying and dehydrating area, pyrolysis reaction region and semicoke from top to bottom
Generation area, completes pyrolytic process.It is pyrolyzed the pyrolysis gas of generation and tar is discharged outside reactor body 41 simultaneously from oil gas vent 47
It is further processed, the semicoke of generation sends into next operation by spiral discharging device 3.Pyrolysis can also produce flue gas, flue gas from
Discharged outside reactor body 1 in exhanst gas outlet 46,200 DEG C or so can be cooled to after flue gas and air heat-exchange.By the cigarette after cooling
Gas is used to dry the Hunchun lignite for entering reactor.
Table 2 is reactor Nei Ge areas Temperature Distribution, and table 3 is the yield of thermal decomposition product.
The constituent analysis of the Hunchun lignite of table 1
Mad/% |
Vad/% |
Aad/% |
Fcad/% |
8.29 |
37.21 |
14.82 |
39.68 |
Each area's Temperature Distribution of the reactor of table 2
Sequence number |
Reaction zone |
Reactor temperature distribution/DEG C |
1 |
Drying and dehydrating area |
700 |
2 |
Pyrolysis reaction region |
600 |
3 |
Semicoke generates area |
550 |
The pyrolysis product yield of table 3
Sequence number |
Reactant is analyzed |
Ratio value/% |
1 |
Pyrolysis gas |
14.69 |
2 |
Pyrolysis water |
10.79 |
3 |
Tar |
12.37 |
4 |
Semicoke |
62.15 |
As known from Table 3, the moving bed pyrolysis reactor that the utility model is provided can effectively be pyrolyzed powdered carbonaceous fuel.
In above-described embodiment, the temperature setting in drying and dehydrating area must be higher, is so conducive to speed to slough into the carbon containing of stove
Moisture contained by fuel, and the shared space in drying and dehydrating area can also be reduced.Additionally, the flue gas after cooling is used to do
The carbon-containing fuel of dry entrance reactor, so can further improve reactor efficiency and efficiency of combustion.
In summary, the moving bed pyrolysis reactor that the utility model is provided employs heat accumulating type and adds without heat carrier radiant tube
Thermal technology, without gas, solid heat carrier, improves the calorific value of pyrolysis gas, and the structure of reactor is simple, floor space is small, it is easy to work
Industry.
Secondly, metal baffle component is provided with reactor, metal baffle component can increase carbon-containing fuel in pyrolytic reaction
Residence time in device.Therefore, after addition metal baffle component, the height of reactor can be reduced.If not changing reactor body
Height, after addition metal baffle component, the vertical interval of radiant tube can be increased, so as to radiant tube in reactor can be reduced
Quantity.And, metal baffle component can also effectively act as protecting radiant tube not by being washed away by material, and service life of radiant tubes makes
Use the life-span.Additionally, metal baffle component may also operate as breaing up the effect of material, the pyrolysis effect of carbon-containing fuel is improved.
It should be noted that each embodiment above by reference to described by accompanying drawing is only used 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 to the utility model on the premise of enclosing or equivalent, all should cover within the scope of the utility model.
Additionally, unless stated otherwise, then all or part of of any embodiment can be with reference to the whole or of any other embodiment
Part uses.