CN107062918A - Tobacco blending device for heat storage type combustion industrial furnace and the tobacco blending component and industrial furnace with tobacco blending device - Google Patents
Tobacco blending device for heat storage type combustion industrial furnace and the tobacco blending component and industrial furnace with tobacco blending device Download PDFInfo
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- CN107062918A CN107062918A CN201710035350.5A CN201710035350A CN107062918A CN 107062918 A CN107062918 A CN 107062918A CN 201710035350 A CN201710035350 A CN 201710035350A CN 107062918 A CN107062918 A CN 107062918A
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- Prior art keywords
- blending device
- tobacco blending
- air
- cylindrical body
- industrial furnace
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/001—Extraction of waste gases, collection of fumes and hoods used therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
- F23C9/06—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber for completing combustion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
- F27D2017/007—Systems for reclaiming waste heat including regenerators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Incineration Of Waste (AREA)
- Manufacture Of Tobacco Products (AREA)
Abstract
The present invention is provided to the tobacco blending device for the emitting nitride for reducing heat storage type combustion industrial furnace and tobacco blending component and industrial furnace, industrial furnace includes burner, supplies blower fan, the smoke discharging pipe of combustion air, blower fan has the fans entrance for being used for being connected with tobacco blending device, and tobacco blending device includes：Smoke backflow in cylindrical body, the second end with the first end for being connected with smoke backflow pipeline, for being connected to fans entrance and the side wall extended between the first and the second ends, smoke backflow pipeline guiding smoke discharging pipe is to blower fan；It is arranged on the wall of side to introduce multiple air intakes of extraneous air；And for adjusting the air inlet area of multiple air intakes to be pre-configured with the adjusting means of the mixed proportion of flue gas and air；When smoke backflow pipeline and tobacco blending device are connected to industrial furnace, the flue gas of backflow and the air introduced are mixed into the combustion air before fans entrance is introduced into using the negative pressure of fans entrance.The present invention greatly reduces the nitride in discharge flue gas.
Description
Technical field
The present invention relates to the tobacco blending device for heat storage type combustion industrial furnace and the tobacco blending component with the tobacco blending device
And industrial furnace.
Background technology
The need for saving the energy, particular for the control of multiple warm areas, it is necessary to which multiple burners, energy supply change is huge
Trolley heating furnace, Type Car-bottom Heat Treating Furnace, the batch-type furnace of big cycling industrial furnace, such as forging and casting industry.At present extensively
Using Regenerative Combustion Technology, to obtain the heat recovery of the limit, the flue-gas temperature discharged through heat-accumulation combustion only has 100-150 DEG C
Left and right.For cycling industrial furnace, heating period energy supply generally 100% setting ability, and enter after insulation, work as workpiece
When heat absorption and body of heater heat absorption draw to an end, energy supplies a few percent for only needing to setting ability, as long as meeting radiation loss i.e.
Can, therefore, general continuous control is generally in overshoot state, and regulating effect is poor, therefore, and cycling industrial furnace is generally adopted
Use pulse burning control technique mode.Pulse Width Control supplies energy to mode and is converted into 0 and 1 pattern, and 1 is total power, 0 be zero energy or
Low-power, and power output ratio is determined by the length of 0 and 1 service time, so as to realize power supply significantly
Adjusted on degree.Its control feature is exactly that the supply of 0-100% power is controllable, and power supplies into step type, and speed is switched by shutter
Degree is very fast, generally below 1 second.Therefore, it is typically failure for the control model in Pulse Width Control using continuous control valve
, because the responsiveness of actuator does not reach the opening and closing speed of Pulse Width Control shutter much in continuous control.Particularly pin
To multi-temperature zone, the situation of multi-combustor control, uncertain bounce is presented in the flow in the pipeline such as combustion gas, air, flue gas
Change, the Flow-rate adjustment mode used in the prior art can not realize regulation.
Heat storage type combustion industrial furnace is controlled formula burning using the paired burner with heat storage.When a burner combustion
During burning, another burner carries out air-breathing smoke evacuation, and high-temperature flue gas is inhaled by carrying out thermal energy exchange, heat storage during heat storage with heat storage
Heat, high-temperature flue-gas reduction；After the saturation of heat storage accumulation of heat after a while, commutated, during another burner combustion,
Cold air or fuel enter burner from the higher heat storage of endothermic temperature, are heated by the heat storage.Meanwhile, the burning of original burning
Mouth carries out air-breathing smoke evacuation, and high-temperature flue gas again heats its heat storage, carries out heat exchange, continuous alternately and repeatedly by two burners
Burning, reaches the effect of energy-conservation.
However, the flame temperature of conventional heat storage type combustion is very high, substantial amounts of response type nitride is produced, these nitridations
Thing can damage the ozone layer as burning waste gas, cause acid rain and produce strong impulse to human body, facilitate PUD D etc..
The discharge of nitride causes very big environmental pollution, it is necessary to strictly be controlled.
The mode of conventional reduction nitride is to use low nitrogen nitride burner.For common combustion system, the cigarette of discharge
Temperature degree is very high, and flue gas is sent directly into blower fan is likely to result in blower fan damage, so existing research direction concentrates on research and development and burnt
The structure of mouth is to expect to reduce amount of nitrides, and this burner is costly.And for the system using heat storage type combustion,
Exhaust gas temperature is at 150 degree or so, and this is the temperature that blower fan can be born, according to smoke backflow, by reducing oxygen in combustion air
The method of content, can be greatly reduced flame temperature, then can substantially reduce the amount of nitrides in combustion product.
The content of the invention
In order to overcome defect of the prior art, the invention provides a kind of tobacco blending dress for heat storage type combustion industrial furnace
Put, to reduce the discharge of nitride by supplying the combustion air of predetermined mix ratio with smoke backflow tube fit.
There is provided a kind of tobacco blending device for heat storage type combustion industrial furnace, the industry according to an aspect of the present invention
Stove includes burner, the blower fan for supplying combustion air to burner and for the smoke exhaust pipe for the flue gas for discharging burner generation
Road, the blower fan has the fans entrance for being used for being connected with the tobacco blending device, and the tobacco blending device includes：Cylindrical body, its
The second end with the first end for being connected with smoke backflow pipeline, for being connected to fans entrance and in the first end
And the second side wall extended between end, smoke backflow in the smoke backflow pipeline guiding smoke discharging pipe to blower fan；It is arranged on
To introduce multiple air intakes of extraneous air on the side wall；And for adjusting the air inlet area of the multiple air intake
With the adjusting means for the mixed proportion for being pre-configured with flue gas and air；Wherein, it is connected in smoke backflow pipeline and tobacco blending device
In the case of industrial furnace, through smoke backflow pipeline flow back flue gas and introduce tobacco blending device air be introduced into fans entrance it
The negative pressure of preceding utilization fans entrance is mixed into the combustion air.
According to the present invention tobacco blending device by preset backflow flue gas and introduce air mixed proportion and will through with
After air and the flue gas mixing put, the mixture of air and flue gas is entered burner by blower fan through pipeline, being capable of the row of substantially reducing
Go out the content of nitride in flue gas.The present invention is especially suitable for the process that multiple burners, multi-temperature zone carry out pulse burning control technique,
When multiple burner multi-temperature zones are controlled, no matter how burner shutter acts, and can obtain stable tobacco blending ratio, from
And the discharge capacity of nitride can be reduced by realizing each stage of industrial furnace work.
Before industrial furnace is normally run, normal operation furnace temperature of the adjusting means based on industrial furnace is to flue gas and air
Mixed proportion be pre-configured with, and in industrial furnace normal course of operation, the adjusting means substantially maintains the mixing
Ratio.So as to participate in the process control of industrial furnace according to the tobacco blending device of the present invention, greatly simplify the operation pipe of industrial furnace
Reason.
According to one kind deformation, the cylindrical body is configured to and the smoke backflow fluid communication ground company of series connection
Connect, with the mixed zone for being internally formed flue gas and air of the cylindrical body.
According to another deformation, the cylindrical body is constructed such that the smoke backflow pipeline from the cylindrical body
First end extends through the inside of the cylindrical body and reaches the second end of the cylindrical body, with the end face at second end
The upper mixed zone for forming flue gas and air.
Preferably, the cylindrical body is constructed such that the smoke backflow pipeline is medially installed to the cylindrical body
First end.
Preferably, the air intake is formed as the slit along the vertical linear extension of the cylindrical body.
Preferably, the multiple air intake being arranged circumferentially along the cylindrical body.
According to an aspect of the present invention, the adjusting means includes at least one of annular around the cylindrical body
Body is adjusted, the regulation body is moveable relative to the cylindrical body.
Preferably, the regulation body is rotatable, the circumferential table of the regulation body relative to the cylindrical body
Face, which is provided with, to be used to be adapted to adjust multiple air inlet adjustment holes of air inflow with the air intake.
According to another aspect of the present invention, the aperture area at second end is more than the aperture area of the fans entrance.
According to another aspect of the invention, the second end of cylindrical body has the changeover portion for being connected to fans entrance, the mistake
Crossing section has tapered portion.
According to another aspect of the invention, the second end of cylindrical body also has the connecting tube for being connected to fans entrance, should
Changeover portion is extended into the connecting tube, and one end of the connecting tube is connected to that end opposite with fans entrance of changeover portion, the company
The other end of adapter is connected to fans entrance.
In accordance with a further aspect of the present invention, the industrial furnace uses pulsed Combustion System, and/or the blower fan to be centrifugation
Blower fan.
The invention further relates to a kind of tobacco blending component, it includes above-mentioned tobacco blending device and the smoke backflow being connected with tobacco blending device
Pipeline.
The invention further relates to a kind of industrial furnace, it includes above-mentioned tobacco blending component.
Brief description of the drawings
Fig. 1 is shown according to partial structurtes of the tobacco blending device of the present invention in the state of heat storage type combustion industrial furnace is installed to
It is intended to.
Fig. 2 is the structural representation of tobacco blending device according to a first embodiment of the present invention.
Fig. 3 is that the adjusting means of tobacco blending device shown in Fig. 2 is in the partial enlarged drawing of adjustment state.
Fig. 4 (a) and 4 (b) are the front view and side view of the regulation body of adjusting means respectively.
Fig. 5 is the structural representation of tobacco blending device according to a second embodiment of the present invention.
Fig. 6 is the partial enlarged drawing that tightening state is according to the adjusting means of the tobacco blending device of the present invention.
Fig. 7 (a) and 7 (b) are the structural representations of tobacco blending device according to a third embodiment of the present invention.
Fig. 8 (a) and 8 (b) are the structural representations of tobacco blending device according to a fourth embodiment of the present invention.
Fig. 9 is the structural representation of tobacco blending device according to a fifth embodiment of the present invention.
Figure 10 (a) is the structural representation that alternative adjusting means is provided with according to the tobacco blending device of the present invention.
Figure 10 (b) is the cross section view of the tobacco blending device shown in Figure 10 (a).
Figure 10 (c) is the plane outspread drawing of the adjusting means shown in Figure 10 (a).
Embodiment
Fig. 1 shows the structure in the state of heat storage type combustion industrial furnace is installed to according to the tobacco blending device 1 of the present invention
Schematic diagram.
As shown in figure 1, heat storage type combustion industrial furnace includes burner (not shown), for supplying combustion-supporting to burner
The blower fan 101 of air and for the smoke discharging pipe 102 for the combustion product gases for discharging burner.
Smoke backflow pipeline 2 is connected to smoke discharging pipe 102, for guiding the smoke backflow in smoke discharging pipe 102 to introduce
Fans entrance 103.As shown in Fig. 2 smoke backflow pipeline 2 includes being used to be connected to the arrival end of the smoke discharging pipe 102 of industrial furnace
21 and for by the flue gas of backflow supplied to industrial furnace fans entrance 103 the port of export 22.For advantageously control operation,
The smoke backflow pipeline 2 is provided with switch valve 23 to control whether flue gas flows back, as shown in Figure 1.Typically when burner hearth reaches one
Opened after constant temperature degree (generally when fire box temperature reaches that more than certain temperature (typically 600-700 DEG C) opens the switch valve 23, when
So opening temperature can also be set according to emitting nitride amount).In addition, the exhaust gas volumn in order to adjust backflow, is also returned in the flue gas
Flow tube road 2 is provided with flow control valve 24, and the flow control valve 24 is preferred to use manual form, once after setting according to demand
Just it need not be adjusted, so as to greatly simplify operation.
Tobacco blending device 1 is installed to the fans entrance 103 of heat storage type combustion industrial furnace to introduce combustion air.Specifically,
Tobacco blending device 1 can introduce fresh air from the external world and it is mixed with the flue gas flowed back from smoke discharging pipe 102.Tobacco blending device 1
It is mainly fresh air that furnace temperature is introduced into and flue gas by predetermined proportional arrangement into helping according to the different operating mode situations of industrial furnace
Fire air, and by with the combustion air postponed using the negative voltage supply of fans entrance 103 in blower fan 101.It should be noted that
The tobacco blending device 1 is pre-configured with the mixed proportion of flue gas and air for different industrial furnaces, for example, be mainly based upon industrial furnace
Furnace temperature during normal operation and preset the mixed proportion, be finely adjusted when need to only debug at the scene according to actual condition.
Industrial furnace is normally after operation, and tobacco blending device 1 keeps the mixed proportion constant substantially.It is oxygen-containing due to being incorporated in combustion air
The low flue gas of amount, causes the oxygen content reduction that combustion air is overall, so as to reduce the ignition temperature of combustion flame, reaches reduction
The purpose of emitting nitride amount in combustion product.And due to tobacco blending device simply in advance configuration mixed proportion and and be not involved in
Process control, therefore the operation of industrial furnace is simple, reliable.
(first embodiment)
Fig. 2 to Fig. 4 shows the schematic structure of tobacco blending device 3 according to a first embodiment of the present invention.
As shown in Fig. 2 tobacco blending device 3 includes cylindrical body 31, the multiple air intakes 32 being arranged in cylindrical body 31
And for the adjusting means 33 for the air inlet area for adjusting air intake 32.
The cylindrical body 31 is including the first end 311 for being connected with smoke backflow pipeline 2, for being connected to fans entrance
103 the second end 312 and the side wall 313 extended between the end 312 of first end 311 and second.
First end 311 is used for the port of export 22 for connecting smoke backflow pipeline 2 provided with opening, by what is discharged from the port of export 22
Flue gas is introduced in cylindrical body 31.The port of export 22 is preferably provided at the center of first end 311, namely the opening is arranged on
The center of one end 311.Direction shown in the flue gas of backflow along the A arrows in figure enters cylindrical body 31, and fresh in it
Air is sufficiently mixed.
Side wall 313 opens up multiple openings and forms the air intake 32.The opening is preferably along the vertical of cylindrical body 31
To the elongate slit of extension, such as rectangular slot, so that the air inlet area of air intake 32 can be by linear regulation.However, it is possible to
It is envisaged that the opening can also be other shapes such as circle, ellipse, polygon.The multiple air intake 32
Further preferably it is uniformly distributed along the circumference of cylindrical body 31, so that the stability of enhancing tobacco blending device 3 under operation.Also,
Air intake 32 is also not limited only to be formed on side wall 313, can also be formed on the end 312 of first end 311 and/or second,
To increase the air capacity introduced.In this embodiment, air intake 32 is preferably provided to away from first end 311 closer to second
End 312, thus under operation, direction shown in the fresh air being introduced into along the B arrows in figure enter cylindrical body 31, with entering
The backflow flue gas entered is to collision turbulization, so as to be sufficiently mixed.
Second end 312 can be with fans entrance direct or indirect connection, and it is provided with opening combustion air is incorporated into wind
In machine entrance 103.In order to ensure that stable static pressure area is formed in cylindrical body 31, the aperture area at the second end 312 is preferably big
In the aperture area of fans entrance 103.
Cylindrical body 31 is preferably cylindrical shape, however, it can also use L-shaped or the first-class tube structure of curved bend, as long as
Combustion air can be introduced fans entrance 103 by the cylindrical body 31.In addition, cylindrical body 31 is preferably single-piece cylinder.
However, cylindrical body 31 can also be fitted together and formed by multiple parts separated each other.For example, cylindrical body 31 can be with
By multiple pillars at each interval around forming, one end of these pillars is each attached on plate-like piece, the shape between these pillars
The multiple air intake 32 is constituted into multiple slits.These pillars are axially extended with being preferably parallel to each other, so that described many
Individual air intake 32 is formed as the axial linear extension along cylindrical body 31.
Fig. 3 is the partial enlarged drawing of adjusting means 33.Adjusting means 33 is including surrounding the cylindrical body 31 of tobacco blending device 3 simultaneously
Cover the regulation body 331 of the partial longitudinal extent of cylindrical body 31 and for regulation body 331 relative to tubular sheet
The position control 332 of the position of body 31.
Regulation body 331 is the cylindrical member of the cylindrical body 31 of laminating tobacco blending device 3, and preferably both are brought into close contact with accurate
Control air inflow.As shown in Fig. 4 (a), Fig. 4 (b), the regulation body 331 is equally spaced multiple mounting lugs along its circumference
3311 (three are shown in figure), each mounting lug 3311 has centre bore to be installed to corresponding position control 332.
It is envisioned that the quantity of mounting lug 3311 is not limited to three, as long as can be circumferentially fixed by adjusting means 33.
Position control 332 includes the screw rod 3321 with head and two clamp nuts being set on the screw rod 3321
3322.Screw rod 3321 passes through the support 314 of the one end of cylindrical body 31, and passes through the corresponding mounting lug of regulation body 331
3311, the both sides that two clamp nuts 3322 are located at mounting lug 3311 are used to tighten from both sides.Regulation body 331 can pass through
Mounting lug 3311 is slided relative to position control 332.The monitoring result of amount of nitrides will be adjusted in based on discharge flue gas
Abridged edition body 331 is moved to after the position of setting, is tightened the clamp nut 3322 of the both sides of mounting lug 3311 and will be adjusted body 331
Position fix, as shown in fig. 6, so as to which the air inlet area of air intake 32 keeps constant, reaching configuration backflow flue gas and fresh
The purpose of air.
The regulation body 331 that described above is adjusting means 33 slides to adjust air inflow in cylindrical body 31, however,
Adjusting means 33 can also using rotary type regulation, i.e. can make regulation body 331 rotated in cylindrical body 31 and relative to
It is moved, and regulation body 331 and the screw thread of cylindrical body 31 can now engaged.In other words, as long as adjusting means 33 can
Move to adjust the air inlet area of air intake thereon relative to cylindrical body 31.
Although described above is adjusting means 33 uses manual regulation form, however, it can also use electric and pneumatic
Deng other manner.
The discharge of heat storage type combustion nitride is only mixed into ratio with flue gas and furnace temperature is relevant.By substantial amounts of it is demonstrated experimentally that
The certain heat-storage type burner of correspondence, the certain furnace temperature of correspondence, when preset flue gas and AIR Proportional, the emitting nitride of acquisition
Value is basic in the range of stationary value, and its feature has repeatability.Therefore, can be with as it was previously stated, before industrial furnace is normally run
According to thermal technology and industrial furnace temperature in use, the angle initialization flue gas and the premix ratio of air designed from industrial furnace.In reality
During the debugging on border, furnace temperature when normally being run based on industrial furnace first with adjusting means is entered the mixed proportion of flue gas and air
Row is preset (need to be only finely adjusted according to actual condition), and maintains the ratio substantially in industrial furnace normal course of operation, namely
Participation process is not controlled adjusting means.Preset flue gas and AIR Proportional are to whole Pulse Width Control combustion system reduction nitride row
Put and be significant, a simple and feasible solution can be obtained.
After flue gas and air mixture ratio is regulated, the flue gas flowed back from the smoke discharging pipe 102 of industrial furnace is from flue gas
The port of export 22 of reflux line 2 is flowed into the cylindrical body 31 of tobacco blending device 3, herein with being introduced by multiple air intakes 32
To the fresh air mixing in cylindrical body 31, in the work for the negative pressure for being operated and being produced in cylindrical body 31 by blower fan 101
Fans entrance 103 is flowed under, so as to reduce the oxygen content in combustion air, tobacco blending device of the invention will can be discharged to outer
The content of nitride in boundary is reduced to 100mg/m3, this discharge standard far beyond national regulation.
In addition, the present invention adjusts air inflow, the extra flow without setting by the way that tobacco blending device is arranged in itself
Regulating valve, and due to being capable of the air inlet area of linear regulation air intake, therefore be easy to convenience, accurately control air inflow.
(second embodiment)
Fig. 5 shows the schematic structure of tobacco blending device 1 according to a second embodiment of the present invention.The second embodiment and the
The difference of one embodiment is only in that the port of export 22 of smoke backflow pipeline 2 from the first end of the cylindrical body 31 of tobacco blending device 3
311 extend through the inside of cylindrical body 31 and reach the second end 312 of cylindrical body 31, with the end face at second end 312
(that is, the plane residing for the end) place forms the mixed zone of flue gas and air.The other parts of the embodiment can be with first in fact
Apply example identical.For sake of simplicity, being only described herein the difference.
In this embodiment, the port of export 22 of smoke backflow pipeline 2 passes through the cylindrical body 31 of tobacco blending device 3, so that
Annular space 34 is formed in the cylindrical body 31 of tobacco blending device 3 to receive the fresh air introduced from air intake 32, backflow
Flue gas and the fresh air that introduces are at end (namely the second end of cylindrical body 31 of the close fans entrance of tobacco blending device 1
312 and smoke backflow pipeline 2 the port of export 22 at) be inhaled into fans entrance 103 using negative pressure so that pass through design an area
Distribution surface carries out area distributions, realizes the effect similar with above-mentioned first embodiment.
In this embodiment, in order to preferably introduce fresh air, multiple air intakes 32 are preferably provided to away from tubular
Second end 312 of body 31 and closer to first end 311, so as to avoid forming dead band in the cylindrical body 31.
(3rd embodiment)
Fig. 7 (a), Fig. 7 (b) show the structural representation of tobacco blending device according to a third embodiment of the present invention.The implementation
The difference of example and first embodiment is that the second end 312 of tobacco blending device 3 is provided with the changeover portion 3120 being connected with fans entrance,
Arranged with the different spaces for adapting to various industrial furnaces.The changeover portion 3120 can have tapered portion such as cone cylinder with fans entrance
Direct or indirect connection.The changeover portion 3120 can also have the vertical tube part being connected with the tapered portion, and the vertical tube part can be direct
Or be connected indirectly with fans entrance.However, the changeover portion 3120 can also use other cylindrical forms, as long as can suitably connect
To fans entrance to supply combustion air.
Fig. 7 (a) shows that air intake 32 is arranged close to the second end 312 of tobacco blending device 3, and Fig. 7 (b) shows sky
Gas entrance 32 is arranged close to the first end 311 of tobacco blending device 3, so as to realize different air flows.
(fourth embodiment)
Fig. 8 (a), Fig. 8 (b) show the structural representation of tobacco blending device according to a fourth embodiment of the present invention.The implementation
The difference of example and second embodiment is that the second end 312 of tobacco blending device 3 is provided with the changeover portion 3120 being connected with fans entrance,
To adapt to the different arrangements of various industrial furnaces.The changeover portion 3120 can have tapered portion such as cone cylinder with direct with fans entrance
Or be indirectly connected with.The changeover portion 3120 can also have the vertical tube part that is connected with the tapered portion, the vertical tube part can directly or
Connect and be connected with fans entrance.However, the changeover portion 3120 can also use other cylindrical forms, as long as wind can be suitably connected to
Machine entrance is to supply combustion air.
With tobacco blending device 3 correspondingly, the port of export 22 of smoke backflow pipeline 2 from the first end 311 of tobacco blending device 3 pass through to
Up to the changeover portion 3120 at the second end 312, so that air and flue gas are on a distribution surface (end face) at second end 312
Mixing.
Fig. 8 (a) shows that air intake 32 is arranged close to the second end 312 of tobacco blending device 3, and Fig. 8 (b) shows sky
Gas entrance 32 is arranged close to the first end 311 of tobacco blending device 3, so as to realize different air flows.
(the 5th embodiment)
Fig. 9 shows the structural representation of tobacco blending device according to a fifth embodiment of the present invention.The embodiment is real with the 4th
The difference for applying example is that the second end 312 of tobacco blending device 3 is additionally provided with the connecting tube with fans entrance direct or indirect connection
3121, changeover portion 3120 is stretched into the connecting tube 3121.
The connecting tube 3121 is formed as L-shape, and its one end is connected to the end opposite with fans entrance of changeover portion 3120
Portion, the other end is connected to fans entrance, so as to strengthen the flexibility being connected with fans entrance.The connecting tube 3121 can use soft
Property flexible pipe.
Describing the adjusting means 33 of tobacco blending device 3 in the first embodiment above can rotate to adjust air inflow.Under
Face provides a specific embodiment of the regulative mode.
Figure 10 (a) shows that cylindrical body 31 rotation of the regulation body 331 relative to tobacco blending device 3 of adjusting means 33 comes
Adjust the structural representation of air inflow.Figure 10 (b) and 10 (c) are its sectional view and plane outspread drawing respectively.
Adjusting means 33 only includes the regulation body 331 rotatably coordinated with cylindrical body 31 and is integrally formed in the regulation
Multiple air inlet adjustment holes 3310 on body 331.Regulation body 331 is formed about the barrel shape such as cylinder of cylindrical body 31
Shape, its peripheral surface is provided with air inlet adjustment hole 3310, and these air inlet adjustment holes 3310 can be square, rectangle, circle
Hole or the hole of other arbitrary shapes, preferably linear aperture such as square or rectangular hole, will pass through the air inlet adjustment hole 3310
Cooperate to adjust the air inflow of tobacco blending device 3 with the air intake 32 in cylindrical body 31.These air inlet adjustment holes 3310
It is preferred that being uniformly distributed along the circumference of regulation body 331.
Four-headed arrow in Figure 10 (b) shows direction of rotation of the adjusting means 33 relative to cylindrical body 31, can be with
Regulation body 331 is rotated clockwise or counter-clockwise, to adjust air inlet adjustment hole 3310 and the air intake in cylindrical body 31
32 superposition area namely air inlet area, so as to be appropriately arranged with according to the content of nitride in discharge flue gas.
Adjusting means described above operation is simpler, and structure is simplified, it is adaptable to it is of the invention it is all before
State embodiment.
The invention further relates to a kind of tobacco blending component, it includes filling according to the tobacco blending device of above-described embodiment and with the tobacco blending
Put the smoke backflow pipeline of connection.
The invention further relates to the industrial furnace equipped with above-mentioned tobacco blending component.
The blower fan of industrial furnace is preferably centrifugal blower, and the pressure change that it is exported is little.In some or some burners not
During work, blower fan can automatically adjust the introduction volume of combustion air automatically according to the demand of burner, so as to once be directed to some
Industrial furnace sets the ratio of configuration, then the fully automated operation of the industrial furnace, greatly reduces the artificial ginseng of legacy equipment needs
With reducing operating error, reducing cost of labor.
It is being provided with the industrial furnace according to the tobacco blending component of the present invention, by presetting smoke backflow pipeline and tobacco blending
The air inlet area ratio of device, it is possible to achieve the 10-70% for discharging flue gas is flowed back, and then reduce industrial furnace discharge flue gas
In amount of nitrides.
Claims (15)
1. a kind of tobacco blending device for heat storage type combustion industrial furnace, the industrial furnace includes burner, for being supplied to burner
Answer the blower fan of combustion air and for the smoke discharging pipe for the flue gas for discharging burner generation, the blower fan, which has, to be used to match somebody with somebody with described
The fans entrance of cigarette device connection, the tobacco blending device includes：
Cylindrical body, it is with the first end, the second end for being connected to fans entrance for being used to be connected with smoke backflow pipeline
And the side wall extended between the first end and the second end, the flue gas in smoke backflow pipeline guiding smoke discharging pipe returns
It flow to blower fan；
It is arranged on the side wall to introduce multiple air intakes of extraneous air；And
Filled for adjusting the air inlet area of the multiple air intake with the regulation for the mixed proportion for being pre-configured with flue gas and air
Put；
Wherein, in the case where smoke backflow pipeline and tobacco blending device are connected to industrial furnace, the cigarette flowed back through smoke backflow pipeline
The air of gas and introducing tobacco blending device is mixed into the combustion-supporting sky before fans entrance is introduced into using the negative pressure of fans entrance
Gas.
2. tobacco blending device according to claim 1, wherein, before industrial furnace is normally run, the adjusting means is based on
The normal operation furnace temperature of industrial furnace is pre-configured with to the mixed proportion of flue gas and air, and in industrial furnace normal course of operation
In, the adjusting means substantially maintains the mixed proportion.
3. tobacco blending device according to claim 1 or 2, wherein the cylindrical body is configured to and the smoke backflow pipe
Road fluid flow communication is connected in series, with the mixed zone for being internally formed flue gas and air of the cylindrical body.
4. tobacco blending device according to claim 1 or 2, wherein the cylindrical body is constructed such that the smoke backflow pipe
Road extends through the inside of the cylindrical body from the first end of the cylindrical body and reaches the second end of the cylindrical body,
To form the mixed zone of flue gas and air on the end face at second end.
5. the tobacco blending device according to any one of claim 1-4, wherein the cylindrical body is constructed such that the cigarette
Gas reflux line is medially installed to the first end of the cylindrical body.
6. the tobacco blending device according to any one of claim 1-5, wherein the air intake is formed as along the tubular
The slit of the vertical linear extension of body.
7. the tobacco blending device according to any one of claim 1-6, wherein the multiple air intake is along the tubular sheet
Body is arranged circumferentially.
8. the tobacco blending device according to any one of claim 1-7, wherein the adjusting means includes surrounding the tubular
At least one of annular regulation body of body, the regulation body is moveable relative to the cylindrical body.
9. tobacco blending device according to claim 8, wherein the regulation body is rotatable relative to the cylindrical body
, it is described regulation body peripheral surface be provided be used for be adapted to the air intake adjust air inflow it is multiple enter controlled atmosphere
Knothole.
10. the tobacco blending device according to any one of claim 1-9, wherein the opening surface at the second end of the cylindrical body
Aperture area of the product more than the fans entrance.
11. the tobacco blending device according to any one of claim 1-10, is controlled wherein the industrial furnace is burnt using pulsed
System, and/or the blower fan are centrifugal blower.
It is connected to 12. the second end of the tobacco blending device according to any one of claim 1-11, wherein cylindrical body has
The changeover portion of fans entrance, the changeover portion has tapered portion.
13. the second end of tobacco blending device according to claim 12, wherein cylindrical body, which also has, is connected to fans entrance
Connecting tube, the changeover portion extended into the connecting tube, and one end of the connecting tube is connected to the opposite with fans entrance of changeover portion
That end, the other end of the connecting tube is connected to fans entrance.
14. a kind of tobacco blending component for being used to reduce the emitting nitride of heat storage type combustion industrial furnace, it is included according to claim
Tobacco blending device any one of 1-13 and the smoke backflow pipeline being connected with tobacco blending device.
15. a kind of industrial furnace, it includes tobacco blending component according to claim 14.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611130360 | 2016-12-09 | ||
| CN2016111303609 | 2016-12-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107062918A true CN107062918A (en) | 2017-08-18 |
| CN107062918B CN107062918B (en) | 2023-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710035350.5A Active CN107062918B (en) | 2016-12-09 | 2017-01-17 | Smoke distribution device for heat accumulating type combustion industrial furnace, smoke distribution assembly with smoke distribution device and industrial furnace |
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| Country | Link |
|---|---|
| CN (1) | CN107062918B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2093975U (en) * | 1991-05-10 | 1992-01-22 | 曹国峰 | Multiple air-draught energy-saving industrial boiler |
| CN105841143A (en) * | 2016-05-25 | 2016-08-10 | 上海华之邦科技股份有限公司 | System and method for reducing NOx emissions through smoke recycling |
| CN205690387U (en) * | 2016-06-28 | 2016-11-16 | 艾欧史密斯(中国)热水器有限公司 | It is applied to entirely premix the smoke reflux device of boiler and entirely premix boiler |
| CN206638042U (en) * | 2016-12-09 | 2017-11-14 | 重庆沃克斯博能科技有限公司 | Tobacco blending device for heat storage type combustion industrial furnace and the tobacco blending component and industrial furnace with tobacco blending device |
-
2017
- 2017-01-17 CN CN201710035350.5A patent/CN107062918B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2093975U (en) * | 1991-05-10 | 1992-01-22 | 曹国峰 | Multiple air-draught energy-saving industrial boiler |
| CN105841143A (en) * | 2016-05-25 | 2016-08-10 | 上海华之邦科技股份有限公司 | System and method for reducing NOx emissions through smoke recycling |
| CN205690387U (en) * | 2016-06-28 | 2016-11-16 | 艾欧史密斯(中国)热水器有限公司 | It is applied to entirely premix the smoke reflux device of boiler and entirely premix boiler |
| CN206638042U (en) * | 2016-12-09 | 2017-11-14 | 重庆沃克斯博能科技有限公司 | Tobacco blending device for heat storage type combustion industrial furnace and the tobacco blending component and industrial furnace with tobacco blending device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107062918B (en) | 2023-04-07 |
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