CN103950695B - A kind of biomass material anti-backfire continuous feeding system - Google Patents
A kind of biomass material anti-backfire continuous feeding system Download PDFInfo
- Publication number
- CN103950695B CN103950695B CN201410145041.XA CN201410145041A CN103950695B CN 103950695 B CN103950695 B CN 103950695B CN 201410145041 A CN201410145041 A CN 201410145041A CN 103950695 B CN103950695 B CN 103950695B
- Authority
- CN
- China
- Prior art keywords
- housing
- dipleg
- backfire
- pressure
- helical compression
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
The open a kind of biomass material anti-backfire continuous feeding system of the present invention, including drive system, pressure feeding spiral, housing, housing includes spiral feed zone and is sequentially connected with helical compression section, feeding plug tube, dipleg；The diameter of the housing of helical compression section progressively diminishes；The housing of feeding plug tube is equal diameter, dipleg housing is that diameter progressively becomes big horn-like, the horn-like outlet of dipleg connects the first opening of T-shaped pipe, on second opening of corresponding dipleg Way out, cylinder is installed on T-shaped pipe, the outfan of cylinder connects cone valve, and cylinder is connected by compressed air piping with vacuum tank；The downward mouth of pipe of T-shaped pipe is as discharging opening.Drive system is driven by frequency conversion motor, the thrust of cylinder and motion use bleed pressure to be controlled, the chain access system DCS control systems such as pressure-control valve, temperature monitor, driving motor, regulate material plug degree of compaction by controlling cylinder thrust, it is achieved prevent from being tempered the purpose of gas anti-channeling.
Description
Technical field
The present invention relates to a kind of biomass material anti-backfire continuous feeding system, belong to biomass fuel pot
The feeding technology field of stove or gasification furnace, for the new energy of the biomass such as biomass power generation, gasification of biomass
The biomass continuous-feeding facility of source domain.
Background technology
Along with the minimizing day by day of traditional fossil energy (coal, oil, natural gas) reserves, and owing to making
The problem of environmental pollution brought by fossil energy, directly threatens the survival and development of the mankind.Pay attention to and
Develop common recognition renewable, that eco-friendly power source has become national governments.Biomass are that plant passes through light cooperation
With the organic substance generated, its distribution extensively, recyclable regenerative, there is CO2The spy of zero-emission
Levy, be a kind of important clean energy resource.Biomass fuel direct combustion power generation in the boiler is biomass
A kind of mature technology utilized, the another kind of more technology of commercial promise is that biomass fuel is carried out gas
Changing, produced gas is for gas turbine power generation, for chemical industry synthetic engine fuel or production chemical products
Deng.Conventional biomass fuel mainly has various agricultural wastes (such as rice husk, cotton stalk, rice straw, Brassica campestris L
Stalk and corn stalk etc.) and forestry waste (such as branch bavin, wood leftover material, tree root etc.).In biomass
In power plant's feeding system and biomass artificial oil feeding system, tempering problem does not obtain adequate solution,
Because tempering problem causes the accident of biomass electric power plant feeding system breaking out of fire to happen occasionally, exploitation safety,
Reliably, efficient anti-backfire feeding system tool is of great significance.
At present, in traditional biomass fuel boiler, boiler typically uses the tiny structure method of operation,
Make biomass fuel send into burner hearth position be negative pressure region, with avoid burner hearth high-temperature flue gas anti-channeling to
In material system thus breaking out of fire.But in actual production, often due to feed fluctuation, burner hearth
The reasons such as pressure oscillation and make burner hearth be in operation under positive pressure state and flue gas anti-channeling accident occurs.Some is raw
Material power plant have employed high pressure sealing wind measure and prevents tempering, but this measure is only capable of in lower degree
Stop tempering gas, it is impossible to eliminate tempering phenomenon.Some biomass electric power plants use material envelope measure, when sending out
During raw tempering, material envelope, by increasing the resistance that tempering gas passes through, can stop tempering gas to a certain extent
Anti-channeling, but in actual production, there is material envelope and can not be completely filled with feed than more loose, material envelope
Machine cavity body, tempering gas can go out from loose material envelope space or the empty anti-channeling being not completely filled with expecting to seal
Coming, it addition, as long in material envelope, the feeding system easily blockage phenomenon because resistance is big, as material sealed
Short, then anti-backfire ability, this measure is poor in the application effect of biomass electric power plant.
The Chinese patent of Application No. 201120140199.X has invented a kind of biomass fuel two-stage material
Plug spiral positive-pressure continuous feeding system, this system is mainly by first order screw(-type) feeder, vertical tube and second
Level screw(-type) feeder is in series, and biomass fuel can be at the outfan of first order screw(-type) feeder and the
The outfan of deuterostrophies batcher forms first order material plug and second level material plug.This patent is theoretically
Can realize stoping the purpose of tempering gas anti-channeling, but there is following problem: 1, this patent uses regulation
After screw(-type) feeder outlet, diameter and the length of slype realize the density that regulation material is filled in, and how to realize
This function, this patent is not described, once process because of equipment and install in place after, batcher
After outlet, the diameter of slype and the regulatory function of length are difficulty with；2, compress excessively such as material plug
Closely knit, material plug advance resistance is very big, and the thrust of material will be difficult to overcome material choking resistance, feed by spiral
Spiral will easily block.
Summary of the invention
It is an object of the invention to provide a kind of biomass material anti-backfire continuous feeding system, solve raw
Raw material of substance feeding system easily occurs the problem that tempering causes fire.
Technical scheme: the biomass material anti-backfire continuous feeding system of the present invention includes driving
Dynamic system, pressure feeding spiral, housing, DCS control system, housing includes spiral feed zone and connects successively
The helical compression section that connects, dipleg；The diameter of the housing of helical compression section progressively diminishes, for taper；Material
The housing of tube sealing is that diameter progressively becomes big horn-like, and the horn-like outlet of dipleg connects T-shaped pipe
First opening, T-shaped pipe installs cylinder on the second opening of corresponding dipleg Way out, cylinder
Outfan connects cone valve, the outlet of the cone-shaped valve head alignment dipleg of cone valve；T-shaped pipe is downward
The mouth of pipe sets charging aperture as discharging opening, feed zone top.
Setting feeding plug tube between helical compression section and dipleg, the housing of feeding plug tube is equal diameter.
Arrange along conical shell inwall generatrix direction on described helical compression piece housing inwall is a plurality of anti-skidding
Bar.
The tapering of described helical compression section is 0.1～0.2.
The tapering of the horn-like cone of described dipleg is 8 °～30 °, a length of
200mm～500mm, preferably 300mm～400mm.
Described drive system uses frequency conversion motor, and frequency conversion motor speed regulating control is connected with DCS control system.
The cylinder of described cone valve uses bleed pressure to be controlled, and cylinder sets in vacuum tank connecting tube
Pressure-control valve, the control of pressure-control valve is controlled with chain access system DCS of drive system current detecting
System processed.
The profile of described tread plate is straight stripe board, and its circumferential width is 40mm～100mm,
Circumferentially spacing is 80mm～300mm, and thickness is 10mm～40mm, preferably 16mm～30mm,
By being bolted in inner walls.
Setting temperature monitor at pressure feeding spiral feed pipe, temperature monitor access system DCS controls system
System.
The cross section of described feeding plug tube is circular, feeding plug tube a diameter of 300～1200mm, feeding plug tube length
For 200mm～400mm, preferably 250mm～350mm.
Described biomass material anti-backfire continuous feeding system uses starvation method charging, and material is described
The pack completeness of spiral feed zone is 30%～50%, and material gradually increases in the pack completeness of described helical compression section
Adding to 70%～100%, the geometrical compression ratio formed in described helical compression piece housing is 1～4.0.
The invention have the advantage that
1, the present invention uses reducing pitches pressure feeding spiral, and biomass material is at spiral thrust in opposite directions
Under the common effect of the counteracting force F2 of F1 and cone valve, it is compressed into the material plug of denser, material
Plug is completely filled with material plug section, it is achieved continuous-feeding process utilizes material plug to prevent from being tempered the purpose of gas anti-channeling.
2, the present invention uses reducing pitches pressure feeding spiral, and material is continuously increased in the pack completeness of spiral,
When helical compression section, the pack completeness of material is 70%～100%, and material can be avoided because of poor fluidity
Cause material plug section top to there is empty or that material plug is more loose situation to occur, help pressure feeding spiral to be formed all
The even material plug that can be completely filled with feeding plug tube.
3, each cross section of reducing pitches pressure feeding spiral of the present invention all uses circle, can avoid U-shaped cross section etc.
Other shape exists material plug can not be full of material plug section, the problem that corner exists cavity.
4, the present invention arranges tread plate in the inner walls of described helical compression section, stop material with
Helical rotation, increases spiral and is delivered to the thrust of material, effectively prevents spiral to be delivered to the thrust of material little
And bigger material choking resistance can not be overcome to cause the situation of blocking.
5, it is an advantage of the invention that described reducing pitches pressure feeding spiral uses according to the electricity driving motor
The mode of rheologyization regulation cylinder thrust, can regulate material plug degree of compaction more easily.
6, various with the raw material type of biomass artificial oil project because of biomass power plant, feedstock property
Changeable, feedstock load excursion is big, and material feed volume flow rate variation scope is bigger, gives for maintaining
In material spiral, material pack completeness is the most stable, and described pressure feeding spiral uses variable frequency regulating speed control, and includes in
DCS control system, revolution speed of screw can automatically adjust according to the size carrying out doses, cone valve cylinder
The chain access system DCS control system such as control and the current detecting of drive system, temperature monitor,
Both ensure that the degree of compaction of material plug, in turn ensure that the proper flow of material.
7, it is an advantage of the invention that the control of cylinder is interlocked with spiral feed pipe temperature monitor, work as temperature
When degree monitor monitors the temperature overtemperature exception of pressure feeding spiral feed pipe, signal is delivered to DCS,
DCS sends signal and increases air inlet, pressure control to pressure-control valve 10a and 10d, pressure-control valve 10d
Valve 10a processed increases aerofluxus, increases cylinder thrust, cuts off anemostat, prevents fire from occurring or expands.
8, it is an advantage of the invention that and be followed by dipleg at described feeding plug tube, after material enters dipleg, material
Plug will occur a certain degree of expansion, and being beneficial to material plug, below, T-shaped pipe is defeated and dispersed drops, in dipleg
Material also has certain sealing function, increases tempering gas anti-channeling resistance, increases anti-backfire reliability.
Described dipleg has enough length and forms sufficiently long material envelope, and this material envelope can avoid high tempering gas
Body directly contacts material plug helical inner, and protection helical inner is from high tempering gas injury.
Accompanying drawing explanation
Fig. 1 is the population structure schematic diagram of the present invention.
Fig. 2 is T-shaped pipe, cone valve structural representation.
Fig. 3 is tread plate structural representation.
Fig. 4 is Fig. 3 A-A sectional view.
Detailed description of the invention
Below in conjunction with accompanying drawing, the detailed description of the invention of the present invention is described in detail, it should be understood that
It is that detailed description of the invention described herein is merely to illustrate and explains the present invention, the protection of the present invention
Scope is not limited to following detailed description of the invention.
In the case of illustrating on the contrary, term position described in the present invention such as " forward and backward "
For being typically for material conveying direction in batcher, i.e. " from front to back " refer to thing
Material enters into, from charging aperture 2a, the direction being pushed out from discharging opening 14.Term position as " upper and lower,
Top, the end " etc. be then for screw feeder in working order under installation site for, i.e. feed
The bucket location of the device i.e. top of this batcher or top position.Term " axially " used refers to drive
The axis direction of moving axis.
As shown in Figure 1 and Figure 2, the biomass material anti-backfire continuous feeding system of the present invention includes driving
Dynamic system 1, pressure feeding spiral 3, housing 4, housing 4 includes spiral feed zone 2 and is sequentially connected with spiral shell
Rotation compression section 5, feeding plug tube 6, dipleg 7；Housing 4 diameter of helical compression section 5 progressively diminishes,
For taper；The housing 4 of feeding plug tube 6 is equal diameter, and the housing 4 of dipleg 7 progressively becomes big for diameter
Horn-like, the horn-like outlet 7a of dipleg 7 connects the first opening 9a of T-shaped pipe 9, T-shaped pipe
On 9, corresponding dipleg 7 exports installation cylinder 11 on the second opening 9b in 7a direction, and 11a is cylinder
Mounting seat.The output of cylinder 11 connects cone valve 8, the cone-shaped valve head 8a alignment material envelope of cone valve 8
The outlet 7a of pipe 7, cylinder 11 is connected with vacuum tank 12；The downward mouth of pipe of T-shaped pipe 9 is as discharging
Mouth 14.Feed zone 2 top sets charging aperture 2a.In figure: Fl is the thrust that pressure feeding spiral produces；F2
The propulsive thrust produced for cone valve.
Described drive system 1 uses frequency conversion motor, and frequency conversion motor speed regulating control is with DCS control system even
Connect.
Helical blade 3b in drive shaft 3a of described pressure feeding spiral 3 arrange to helical compression section 5 with
Feeding plug tube 6 intersection.
The direction of discharging opening 14 of described T-shaped pipe 9 become with drive shaft 3a of pressure feeding spiral 60 °～
120°。
The tapering of helical compression section 5 is 0.1～0.2.
Setting feeding plug tube 6 between helical compression section 5 and dipleg 7, the housing 4 of feeding plug tube 6 is
Diameter.The cross section of feeding plug tube 6 is circular, feeding plug tube a diameter of 300～1200mm, feeding plug tube length
For 200mm～400mm, preferably 250mm～350mm.
Arrange along conical shell 4 inwall generatrix direction in described helical compression section 5 inner walls is a plurality of
Tread plate 4a.The profile of tread plate 4a is straight stripe board, and its circumferential width is
40mm～100mm, circumferentially spacing is 80mm～300mm, and thickness is 10mm～40mm, excellent
Elect 16mm～30mm as, bolt 4b be connected in inner walls.
The tapering of the horn-like cone of described dipleg 7 is 8 °～30 °, a length of
200mm～500mm, preferably 300mm～400mm.
Described drive system 1 uses frequency conversion motor, and frequency conversion motor speed regulating control is with DCS control system even
Connect.
The cylinder 11 of described cone valve 8 uses bleed pressure to be controlled, cylinder 11 and vacuum tank 12
Set pressure-control valve 10a, 10b, 10c, 10d in connecting tube) pressure-control valve 10a, 10b, 10c,
The control of 10d and drive system 1 current detecting chain access system DCS control system.
Setting temperature monitor 15 at pressure feeding spiral feed pipe, temperature monitor 15 access system DCS is controlled
System processed.
System uses starvation method charging, and material is 30%～50% in the pack completeness of described spiral feed zone 2,
Material is gradually increased to 70%～100% in the pack completeness of described helical compression section 5, in described spiral pressure
The geometrical compression ratio formed in contracting section 5 housing is 1～4.0.
Dipleg 7 is cone, and tapering is generally 8 °～30 °, and length is generally 200mm～500mm,
Being preferably 300mm～400mm, thickness is 10mm～30mm.
Described cone valve 8 cylinder uses bleed pressure to be controlled, and cylinder 11 is connected with vacuum tank 12
Guan Shangshe the first pressure-control valve 10a, the second pressure-control valve 10b, the 3rd pressure-control valve 10c,
4th pressure-control valve 10d, the control of four pressure-control valves 10a, 10b, 10c, 10d and driving
The current detecting chain access system DCS control system of system 1, when material plug tension, system drive
Increase is reached upper limit set value by the electric current of frequency conversion motor 1, and signal transmission sends signal to DCS, DCS
To pressure-control valve the second pressure-control valve 10b, the 3rd pressure-control valve 10c, pressure-control valve the 3rd
Pressure-control valve 10c air inlet, the second pressure-control valve 10b aerofluxus, when the electric current fall driving motor 1
Low when reaching intermediate settings value, the second pressure-control valve 10b, the 3rd pressure-control valve 10c close；
Otherwise, when pine filled in by material, drive the electric current of motor 1 that reduction reaches lower limit set value, signal passes
Transport to DCS, DCS and be signaled to the first pressure-control valve 10a and the 4th pressure-control valve 10d, the
Four pressure-control valve 10d air inlets, the first pressure-control valve 10a aerofluxus, when the electric current driving motor 1
When ging up to reach intermediate settings value, the first pressure-control valve 10a, the 4th pressure-control valve 10d close,
Thus realize the controllable adjustment of material plug degree of compaction.
Setting temperature monitor 15 at pressure feeding spiral feed pipe, temperature monitor 15 access system DCS is controlled
System processed.
When temperature monitor 15 monitors the temperature overtemperature exception of pressure feeding spiral feed pipe, signal is defeated
Deliver to DCS, DCS and send signal to pressure-control valve the first pressure-control valve 10a, the 4th Stress control
Valve 10d, the 4th pressure-control valve 10d increase air inlet, and the first pressure-control valve 10a increases aerofluxus,
Increase cylinder thrust, cut off anemostat, prevent fire from occurring or expand.
The axis of described cone valve 8 and dipleg 7 dead in line.
Fig. 3 is tread plate structural representation, and Fig. 4 is Fig. 3 A-A sectional view:
Arrange in described helical compression section 5 inner walls and prevent along a plurality of of conical shell inwall generatrix direction
Draw runner 4a.The profile of described tread plate 4a is straight stripe board, bolt 4b be connected to housing
On inwall, tread plate 4a is the most equidistantly distributed, and typically sets 4～12.
During work: helical axis 3a is with certain rotating speed towards the direction revolution set, and raw material is from charging aperture 2a
Enter, for prevent material charging aperture 2a build bridge blocking, material pack completeness is relatively low, generally 30%～
50%.Under the progradation of spiral, after material is sent to helical compression section 5 continuously, because of described spiral
The geometrical compression ratio formed in the housing of compression section 5 is 1～4.0, the space that two adjacent blades are surrounded by
Tapered little, material is gradually increased to 70%～100% in the pack completeness of described helical compression section 5, in order to
The material plug of poor fluidity can be completely filled with feeding plug tube 6 later, and material subsequently enters feeding plug tube 6, material plug
Material in pipe 6 is both by thrust F1 of spiral, also by the opposite force F2 of cone valve 8, at Fl
The lower material of common effect with F2 is compacted into closely knit material plug at feeding plug tube 6, plays sealing and makees
With, stop tempering gas anti-channeling.Owing to follow-up material is constantly advanced feeding plug tube 6 by spiral and formed
New material plug, old material stuffing material is gradually pushed out feeding plug tube, loses support and fall into T after dipleg 7
Shape pipe 9, enters back into boiler furnace or biomass gasifying furnace 13, thus realizes continuous sealing and add continuously
The purpose of material.
For making the degree of compaction of material plug possess controllability, system is controlled by DCS control system, described material
The material plug degree of compaction of plug pipe 6 is adjusted by the thrust of regulation cone valve 8, by regulation cone valve
The mode of the compression stress that the thrust regulation material plug of 8 is subject to, thus regulate the degree of compaction of material plug.Specifically arrange
The pressure interlocking of Shi Shi: the current of electric of described spiral drive system 1 and cylinder 11, when material is filled in excessively
Time closely knit, the resistance that material plug advances will increase, and the current of electric of described spiral drive system 1 will exceed
Upper limit limit value, control system just will be by four pressure-control valves 10a, 10b, 10c, 10d by gas
The pressure of cylinder 11 is turned down, and the thrust of cone valve 8 also decreases, and the compression stress that feeding plug tube 6 is subject to will
Diminishing, the degree of compaction of material plug decreases, and the resistance that moves ahead of material plug will also decrease；Otherwise, such as material plug
When excessively loosening, the material plug resistance that moves ahead is less, and the current of electric of described spiral drive system 1 will be less than
Lower limit value, automatic adjustment height, the thrust of described cone valve 8 will be raised by the pressure of described cylinder 11,
The extruding force that feeding plug tube 6 is subject to will become big, and the degree of compaction of material plug will improve.
The present invention use by regulation cone valve 8 thrust regulation material plug degree of compaction mode, be suitable for into
The operating mode of the larger fluctuation of stream amount.
For making cylinder operation thrust stable, it is provided with vacuum tank 12, the work pressure of described vacuum tank 12
Power is not less than 0.7MPa.
Because biomass power plant is various with the raw material type of biomass artificial oil project, feedstock property is changeable,
Easily block, arch formation, described reducing pitches pressure feeding spiral use starvation method charging, material
Pack completeness at described spiral feed zone is 30%～50%, prevents material from putting up a bridge at charging aperture.Material enters
After entering helical compression section 5, the geometrical compression ratio formed in described housing is 1～4.0, two adjacent leaves
The space that sheet is surrounded is gradually reduced, and material is gradually increased in the pack completeness of described helical compression section 5
70%～100%, in order to the material plug of poor fluidity can be completely filled with feeding plug tube 6.
Because biomass power plant is various with the raw material type of biomass artificial oil project, feedstock property is changeable,
Feedstock load excursion is big, and material feed volume flow rate variation scope is big, in maintaining pressure feeding spiral
Material pack completeness is the most stable, and described pressure feeding spiral uses variable frequency regulating speed control, and includes DCS control in
System, revolution speed of screw can automatically adjust according to the size carrying out doses.
For preventing the spiral too small resistance that material plug can not be overcome to advance of thrust to material, at described spiral
Tread plate 4a is set in the inner walls of compression section 5 housing, increases the spiral thrust to material.This is prevented
The profile of draw runner is straight stripe board, is embedded in inner walls, its length direction and helical compression
The direction of section conical shell inwall bus overlaps.
The fluffy materials low for being prone to the bulk density of compression, its material choking resistance is big, described cone valve
The thrust of 8 will be set as relatively low value, it is to avoid material plug is compressed the most closely knit, otherwise, described cone
The thrust of shape valve 8 will be set as higher value, it is to avoid material plug is compressed too loose and causes anti-backfire energy
Power is poor.
At least should arrange one-level thrust bearing inside the reductor of described drive system 1 to transport with counteracting equipment
The axial thrust that when turning, drive shaft is born.
The direction of the discharging opening 14 of T-shaped pipe 9 of the present invention is general with drive shaft 3a of pressure feeding spiral
Become 60 °～120 °.
Discharging opening 14 may be designed to boiler furnace or top of gasification furnace discharge way, and material is from described T
Shape pipe 9 discharging opening 14 directly unloads to boiler furnace or gasification furnace, it is possible to be designed to boiler furnace or gasification
Face, furnace side feeding manner, material unloads to screw(-type) feeder etc. from described T-shaped pipe 9 discharging opening 14 that other is normal
Rule feeding device, is delivered to boiler furnace by other conventional feeding device by the material that T-shaped pipe 9 is brought
Or gasification furnace side feed opening；Material can also be unloaded to elephant trunk from described T-shaped pipe 9 discharging opening 14,
By elephant trunk, the material that T-shaped pipe 9 comes delivered to boiler furnace or gasification furnace side feed opening, described in slip
Pipe must be not less than 65 ° with the angle of horizontal plane.
It is further to note that install for convenience and keep in repair, the present invention preferably as it is shown in figure 1,
By helical compression section 5 housing of above-mentioned screw(-type) feeder and material plug section 6 housing, material plug section 6 housing and
Material envelope section 7 housing, links into an integrated entity by the way of Flange joint, and by material plug section 6 housing edge
Mandrel line is cutd open into two parts of symmetry and is combined by Flange joint, but this is not to realize this
Invent required connected mode.Above-mentioned several part can also realize solid by other modes such as welding
Fixed connection, it is also possible to two or more above-mentioned parts are cast as an entirety.Further, this
Helical blade on bright screw(-type) feeder, each piece housing and drive shaft and axle can be metal or multiple
Condensation material.Described metal material includes the carbon steel of various model, rustless steel and steel alloy.So-called compound
Material refer to constitute the material of this screw(-type) feeder can be dissimilar metals material or metal material with
Nonmetallic materials are composited.Such as in order to improve corrosion-resistant, the abrasion resistance properties of this batcher, give
The housing of material machine can use carbon steel to be base material, within it surface lay one layer have more highly corrosion resistant,
The alloy material of abrasion resistance properties or ceramic material.The drive shaft of batcher can use ordinary carbon steel,
Rustless steel or steel alloy are base material, then at its surface overlaying hard alloy or by sides such as sintering curings
Formula lays ceramic material.In a word, the screw(-type) feeder that the present invention provides can root to the material of constitution equipment
Depending on using environment, material abrasiveness and the requirement to equipment durability.
It is preferable to carry out case 1:
Raw material is about 30% in the pack completeness of charging, and the geometrical compression ratio of helical compression section 5 is 2.5, thing
Expecting that the pack completeness at helical compression section 5 end is about 75%, under this operating mode, pressure feeding spiral 3 is to entering
The feed rate uniformity requirement of material raw material is relatively low, a small amount of fluctuation of charge raw material flow or charge raw material
The change of kind, only causes the change of the material pack completeness of helical compression section 5 end, because of helical compression
Material is not compressed by section, and material only fills in section by spiral thrust F1 and cone valve retroaction at material
Being compressed under the common effect of power F2, it doesn't matter for material plug degree of compaction and the fluctuation of feedstock flow, can
Avoid mass flow fluctuation to cause material to fill in pine or the problem of tension, improve feed to fed upstream amount
The adaptability of fluctuation, it is changeable that this Case comparison is suitable for biomass electric power plant charge raw material kind, feed stream
The operating mode that amount change is big.
It is preferable to carry out case 2:
Charge raw material is the broken wood material being about 3cm, and the pack completeness of feedstock is about 60%,
The geometrical compression ratio of helical compression section 5 is 2.0, material helical compression section 5 end pack completeness about
Being 100%, compression ratio is 1:1.2, and under this operating mode, spiral is big to the thrust of material plug, and material plug is pressed
Contracting the most closely, material plug anti-backfire gas anti-channeling ability is strong.Under this operating mode, pressure feeding spiral 3 is right
The feed rate uniformity requirement of charge raw material is high, it is desirable to accurately control the flow of supplied materials raw material,
The fluctuation of charge raw material flow or the change of charge raw material kind, all can cause helical compression section 5 end
The change of material pack completeness and the change of material plug section material plug degree of compaction, the control of the degree of compaction of material plug is difficult
Spending higher, it is desirable to upstream supplied materials flow-rate ratio is more uniform, raw material type and stable in properties the most easily cause
Pine filled in by material plug overcompression or material, and this Case comparison is suitable for raw material type and Nature comparison is stable, enters
The operating mode that material flow control accuracy is higher.
It is preferable to carry out case 3:
Charge raw material is the broken yellow bar class straw stalk being about 5cm, and the pack completeness of feedstock is about 35%,
The geometrical compression ratio of helical compression section 5 is 4.0, material helical compression section 5 end pack completeness about
Being 100%, compression ratio 1:1.4, under this operating mode, spiral uses starvation method charging, it is to avoid material exists
Pressure feeding spiral 3 charging aperture build bridge blocking, another material at helical compression section 5 end by mild compression, spiral shell
Revolving expecting that fills in provides bigger thrust, material plug is compressed the tightst, expects plug anti-backfire gas
Anti-channeling ability is strong.Under this operating mode, high to the feed rate uniformity requirement of charge raw material, it is desirable to right
The flow of supplied materials raw material accurately controls, the fluctuation of charge raw material flow or the change of charge raw material kind
Change, all can cause change and the material plug section material plug degree of compaction of the material pack completeness of helical compression section 5 end
Change, material plug degree of compaction control difficulty higher, it is desirable to upstream supplied materials flow-rate ratio is more uniform, raw material
Kind and stable in properties, the most easily cause material plug overcompression or material to fill in pine, and this Case comparison is suitable for
Charge raw material kind and Nature comparison are stable, the operating mode that feed rate control accuracy is higher.
The present invention uses reducing pitches housing, the space that the adjacent blade of helical compression section two is surrounded from
Feed end is gradually reduced to helical compression section end, and described reducing variable-pitch screw compression section can use
Only become diameter of the housing and constant screw pitch mode, it would however also be possible to employ only become screw pitch and constant housing
The mode of diameter, it would however also be possible to employ both become diameter of the housing and also become screw pitch frame mode, the most both become
Diameter of the housing also become screw pitch structure, preferably spiral feed zone pitch and helical compression section end segment away from
1/3 power that ratio is compression ratio.
The foregoing is only the schematic detailed description of the invention of the present invention, be not limited to the present invention's
Scope.Any equivalent variations made on the premise of without departing from the design of the present invention and principle with repair
Change, the scope of protection of the invention all should be belonged to.
Claims (10)
1. a biomass material anti-backfire continuous feeding system, including drive system (1), feed spiral shell
Rotation (3), housing (4), DCS control system, it is characterised in that: housing (4) includes that spiral enters
Material section (2) and the helical compression section (5) being sequentially connected with, dipleg (7)；Helical compression section (5)
Housing (4) diameter progressively diminish, for taper；The housing (4) of dipleg (7) be diameter progressively
Becoming big horn-like, the horn-like outlet (7a) of dipleg (7) connects the first of T-shaped pipe (9)
Opening (9a), second opening in upper corresponding dipleg (7) outlet (7a) direction of T-shaped pipe (9)
(9b) installing cylinder (11) on, the outfan of cylinder (11) connects cone valve (8), cone valve
(8) outlet (7a) of cone-shaped valve head (8a) alignment dipleg (7), described cone valve (8)
Cylinder (11) use bleed pressure to be controlled, cylinder (11) and vacuum tank (12) connecting tube
On set pressure-control valve (10a, 10b, 10c, 10d), pressure-control valve (10a, 10b, 10c,
Control 10d) and drive system (1) current detecting chain access system DCS control system；T-shaped
The mouth of pipe managing (9) downward sets charging aperture (2a) as discharging opening (14), feed zone (2) top.
Biomass material anti-backfire continuous feeding system the most according to claim 1, its feature exists
In: between helical compression section (5) and dipleg (7), set feeding plug tube (6), feeding plug tube (6)
Housing (4) be equal diameter.
Biomass material anti-backfire continuous feeding system the most according to claim 1 and 2, it is special
Levy and be: arrange along conical shell (4) inwall bus side in described helical compression section (5) inner walls
To a plurality of tread plate (4a).
Biomass material anti-backfire continuous feeding system the most according to claim 1 and 2, it is special
Levy and be: the tapering of helical compression section (5) is 0.1～0.2.
Biomass material anti-backfire continuous feeding system the most according to claim 1 and 2, it is special
Levy and be: the tapering of the horn-like cone of dipleg (7) is 8 °～30 °, a length of
200mm～500mm.
Biomass material anti-backfire continuous feeding system the most according to claim 1 and 2, it is special
Levy and be: described drive system (1) uses frequency conversion motor, frequency conversion motor speed regulating control to control with DCS
System connects.
Biomass material anti-backfire continuous feeding system the most according to claim 3, its feature exists
In: the profile of described tread plate (4a) is straight stripe board, and its circumferential width is
40mm～100mm, circumferentially spacing is 80mm～300mm, and thickness is 10mm～40mm, by
Bolt (4b) is connected in inner walls.
Biomass material anti-backfire continuous feeding system the most according to claim 1 and 2, it is special
Levying and be: set temperature monitor (15) at pressure feeding spiral feed pipe, temperature monitor (15) accesses
System DCS control system.
Biomass material anti-backfire continuous feeding system the most according to claim 2, its feature exists
In: the cross section of described feeding plug tube (6) is circular, feeding plug tube a diameter of 300～1200mm, feeding plug tube
A length of 200mm～400mm.
Biomass material anti-backfire continuous feeding system the most according to claim 1 and 2, it is special
Levy and be: system uses starvation method charging, and material in the pack completeness of described spiral feed zone (2) is
30%～50%, material is gradually increased to 70%～100% in the pack completeness of described helical compression section (5),
The geometrical compression ratio formed in described helical compression section (5) housing is 1～4.0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410145041.XA CN103950695B (en) | 2014-04-11 | 2014-04-11 | A kind of biomass material anti-backfire continuous feeding system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410145041.XA CN103950695B (en) | 2014-04-11 | 2014-04-11 | A kind of biomass material anti-backfire continuous feeding system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103950695A CN103950695A (en) | 2014-07-30 |
| CN103950695B true CN103950695B (en) | 2016-08-24 |
Family
ID=51328090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410145041.XA Active CN103950695B (en) | 2014-04-11 | 2014-04-11 | A kind of biomass material anti-backfire continuous feeding system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103950695B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104192514B (en) * | 2014-08-19 | 2017-08-22 | 佛山市金凯地过滤设备有限公司 | A kind of high mass dryness fraction device for transporting objects |
| CN104229402B (en) * | 2014-09-23 | 2016-09-21 | 无锡市泰新环保科技有限公司 | Sealed discharging propeller |
| CN104925537A (en) * | 2015-05-20 | 2015-09-23 | 浙江中科兴环能设备有限公司 | Material-plug-type spiral feeder |
| CN105059847B (en) * | 2015-07-28 | 2018-04-10 | 无锡锡东能源科技有限公司 | A kind of batcher of waste plastics decomposition heater |
| CN107539730A (en) * | 2017-07-05 | 2018-01-05 | 江苏超威电源有限公司 | Helical feed batch charger |
| SE542996C2 (en) * | 2018-02-09 | 2020-09-22 | Valmet Oy | A system for transporting biomass material and a method for preventing blow back in said system |
| CN111153127A (en) * | 2018-11-08 | 2020-05-15 | 湖南万容科技股份有限公司 | Screw conveyer |
| CN112175683B (en) * | 2020-10-10 | 2022-04-26 | 康广民 | Horizontal manure gasification furnace |
| CN114214858A (en) * | 2021-12-31 | 2022-03-22 | 郑州运达造纸设备有限公司 | Pressure rotary slurry separator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2441842Y (en) * | 2000-09-28 | 2001-08-08 | 四川东华机械厂 | Straw hot mill |
| EP1783424A2 (en) * | 2005-11-02 | 2007-05-09 | Hollensen Energy A/S | A biomass transport system and a bio fuel firing plant |
| CN101906728A (en) * | 2010-07-15 | 2010-12-08 | 轻工业杭州机电设计研究院 | Wood chip helical extruding and tearing machine |
| CN102182092A (en) * | 2011-04-01 | 2011-09-14 | 岳阳纸业股份有限公司 | Continuous cooking anti-reverse spraying device |
| CN102644924A (en) * | 2012-04-28 | 2012-08-22 | 无锡锡东能源科技有限公司 | Improved screw feeder of raw biomass material incinerator |
| CN103449125A (en) * | 2012-05-30 | 2013-12-18 | 中国科学院工程热物理研究所 | Gas channeling prevention system of screw feeder |
-
2014
- 2014-04-11 CN CN201410145041.XA patent/CN103950695B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2441842Y (en) * | 2000-09-28 | 2001-08-08 | 四川东华机械厂 | Straw hot mill |
| EP1783424A2 (en) * | 2005-11-02 | 2007-05-09 | Hollensen Energy A/S | A biomass transport system and a bio fuel firing plant |
| CN101906728A (en) * | 2010-07-15 | 2010-12-08 | 轻工业杭州机电设计研究院 | Wood chip helical extruding and tearing machine |
| CN102182092A (en) * | 2011-04-01 | 2011-09-14 | 岳阳纸业股份有限公司 | Continuous cooking anti-reverse spraying device |
| CN102644924A (en) * | 2012-04-28 | 2012-08-22 | 无锡锡东能源科技有限公司 | Improved screw feeder of raw biomass material incinerator |
| CN103449125A (en) * | 2012-05-30 | 2013-12-18 | 中国科学院工程热物理研究所 | Gas channeling prevention system of screw feeder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103950695A (en) | 2014-07-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103950695B (en) | A kind of biomass material anti-backfire continuous feeding system | |
| CN101693842B (en) | Gas lock transportation technology and device thereof for biomass high-pressure retort charcoal product | |
| CN103879781B (en) | Rotary blowing type powder feeder | |
| CN101514812B (en) | Biomass burner | |
| CN104877694B (en) | Spiral pulsed the mixture of airstream and strength feeder for mobile biomass pyrolysis | |
| CN103552817B (en) | A kind of special-shaped tube wall conveyor screw | |
| CN202415436U (en) | External heating rotary retorting furnace for producing semi coke | |
| CN207316920U (en) | A kind of Polluted Soil of environment-friendly type crushes high temperature incineration device | |
| CN201647593U (en) | Unequal-diameter and unequal-pitch screw type coal feeder | |
| CN103552774A (en) | Blockage prevention device of screw conveyor | |
| CN102631869A (en) | Organic solid waste spiral charge pump | |
| CN102536313A (en) | Gangue filling pneumatic conveying system | |
| CN209934750U (en) | Powder activated carbon regeneration furnace of silicon carbide furnace pipe material | |
| CN112208956A (en) | Automatic cleaning anti-blocking device for coal dropping pipe | |
| CN109047283A (en) | A kind of processing system and its method of novel rdf/srf compression molding | |
| CN2353940Y (en) | Low-pressure pneumatic continuous delivery pump | |
| CN202440128U (en) | Waste filling pneumatic conveying system | |
| CN201834508U (en) | Spiral feeding pump for organic solid waste | |
| CN209318407U (en) | A kind of processing system of novel rdf/srf compression molding | |
| CN202284789U (en) | Furnace-front biomass fuel feeding device | |
| CN102010753A (en) | Biomass gasification reaction furnace and automatic control method thereof | |
| CN206222341U (en) | The automatic continuous ash discharging gear of bagasse boiler fixed grate | |
| CN104676601B (en) | Drum type feeding device for garbage incinerator of circulating fluidized bed and feeding method | |
| CN209601415U (en) | A kind of anti-clogging star-shaped discharge valve | |
| CN204824723U (en) | Rice husk gas retort unloader |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |