CN206783610U - Fluidized-bed coal gasification furnace gas distributor - Google Patents
Fluidized-bed coal gasification furnace gas distributor Download PDFInfo
- Publication number
- CN206783610U CN206783610U CN201720307630.2U CN201720307630U CN206783610U CN 206783610 U CN206783610 U CN 206783610U CN 201720307630 U CN201720307630 U CN 201720307630U CN 206783610 U CN206783610 U CN 206783610U
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- gasification furnace
- fluidized
- distribution grid
- back taper
- gas distributor
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- 238000002309 gasification Methods 0.000 title claims abstract description 215
- 239000003245 coal Substances 0.000 title claims abstract description 84
- 238000009826 distribution Methods 0.000 claims abstract description 185
- 239000007800 oxidant agent Substances 0.000 claims abstract description 41
- 230000001590 oxidative effect Effects 0.000 claims abstract description 41
- 239000003610 charcoal Substances 0.000 claims abstract description 10
- 238000009413 insulation Methods 0.000 claims description 65
- 230000004888 barrier function Effects 0.000 claims description 29
- 239000003795 chemical substances by application Substances 0.000 claims description 29
- 239000004744 fabric Substances 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 239000002817 coal dust Substances 0.000 abstract description 11
- 230000007774 longterm Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 107
- 239000012530 fluid Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 239000002245 particle Substances 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000005243 fluidization Methods 0.000 description 5
- 230000002787 reinforcement Effects 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 238000010926 purge Methods 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003034 coal gas Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000004901 spalling Methods 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
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- 230000000116 mitigating effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The utility model provides a kind of fluidized-bed coal gasification furnace gas distributor, wherein scum pipe connects the bottom of back taper distribution grid through gasification furnace shell, endless tube is set around scum pipe, oxidant feed gas pipe wears gasification furnace housing passage connection endless tube, the bottom of back taper distribution grid is provided with the through hole of more than 3, through hole pipeline connected ring pipe, for through hole with the central axis of back taper distribution grid in being uniformly and symmetrically distributed, whirlwind refeed line passes through gasification furnace shell and conical distribution plate pipeline connection.The utility model is innovatively by the traditional structure of " central jet, the endless tube deslagging " of gasification furnace, it is changed to the Novel structure of " central tube deslagging, endless tube jet ", simultaneously the central high temperature area that the hot coal dust that external cyclone is collected is delivered in gasification furnace is directly participated in reacting, the gas production of gasification furnace greatly improved, the utility model can not only long-term safety stable operation, and charcoal efficiency high, simple for structure, cost is low and easy to operate, suitable for large-scale promotion application.
Description
Technical field
Gas distributor technical field, more particularly to gasification furnace gas distributor technical field are the utility model is related to,
Specifically refer to a kind of fluidized-bed coal gasification furnace gas distributor.
Background technology
In the natural resources in China, basic characteristics are rich coal, oil-poor, few gas, and this just determines coal in primary energy
In critical role.With petroleum gas comparatively, the reserves of coal in China are relatively abundant, world saving is accounted for
11.6%, turn into the first big coal country in the world.Coal is directly low using not only efficiency, and causes serious environmental pollution,
In order to improve coal utilization efficiency, reduce environmental pollution, since the 1970s, just rise in the world to Filter Tuber For Clean Coal skill
The research and development of art, wherein, coal gasification is the core technology that Coal Clean efficiently utilizes, and the leading technology of coal chemical industry.
Therefore development Coal Gasification Technology is current most urgent, most one of the difficult task in China.
The flow regime of coal particle size and particle in gasification furnace, gasification furnace generally divide according to used in gasification furnace
For three classes, i.e., the fixed-bed gasification furnace represented using Lu Qiwei, using U-Gas, ash agglomerating as the fluidized-bed gasification furnace of representative and with moral
The airflow bed gasification furnace that scholar is ancient, shell is representative.Wherein, fluidized-bed gasification furnace is using broken coal as raw material, with air, oxygen-enriched or oxygen
Gas is oxidant, and water vapour or carbon dioxide are gasifying agent, under appropriate gas velocity, makes fine coal boiling fluidisation in bed, reaches
Gas-particle two-phase is sufficiently mixed, and carries out coal gasification at high temperature.U-Gas and ash agglomerating gasification furnace typically use " central jet, ring
The structure of pipe deslagging ", i.e. central tube insert deslagging tube hub, and lime-ash is discharged out of central tube and scum pipe are formed endless tube to gasify
Stove.Oxygen, steam mixture are sprayed into bed with very high speed from central tube, form central jet area, the area is oxygen-enriched shape
State, combustion reaction mainly occurs, form central high temperature area, promote lime-ash reunion balling-up, and by the difference of lime-ash own wt
Realization ash group efficiently separates with coal grain.Problems be present in the structure of this " central jet, endless tube deslagging "：(1) lime-ash from
High temperature gas flow can wash away center pipe outer wall entrainment of lime-ash when endless tube is discharged, and eventually result in central tube and gall or be broken；In addition,
Scum pipe top is generally configured to Venturi tube structure, and Venturi tube structure is easier to be ground relative to upper and lower diameter identical straight tube
It is broken；(2) annular space that central tube and scum pipe are formed is smaller, if running into larger clinker or gasification furnace enclosure interior lining spalling,
Endless tube will be blocked, influences the normal deslagging of gasification furnace；(3) central tube straight-tube portion is longer, need to be in ring to prevent central tube from rocking
Increase support member fixed center pipe, support member are directly washed away by lime-ash, can eventually fall out, cause central tube to rock in pipe, in
Heart jet will deviate from gasification furnace central area, causes the bad formation dead band of fluidisation in bed, causes slagging.Problem above is equal
Influence gasification furnace long-period stable operation.
In order to solve the above problems, a kind of Chinese utility model patent application " ash-agglomerating fluidized bed gasifier gas point
Cloth device " (application number：201210346022.4 publication No.：CN102827644A a kind of ash agglomerating gasification furnace gas) is disclosed
Distributor, scum pipe one end are connected to the bottom of conical distribution plate and opening, and the other end passes through gasification furnace shell and gasifying agent gas
Source connects, and distributed playpipe one end connect and be opened on the bottom of conical distribution plate, the other end through after gasification furnace shell and
Gasifying agent source of the gas connects, and distributed playpipe is at least three, and its opening on conical distribution plate is with the center of scum pipe
In being symmetrically and evenly distributed.The gas distributor is disadvantageous in that：(1) conical distribution plate upper surface is easily worn, for fluidisation
For bed gasification furnace, gas distributor is a vital part, its fluid effect and gas-particle two-phase to fluid bed
The properties of reaction all have conclusive influence, and because conical distribution plate upper surface is easily worn, conical distribution plate will very
It is worn through soon, causes conical distribution plate to be scrapped, gasification furnace will be forced to stop；(2) distributed playpipe quantity is at least 3, gas
Changing furnace shell the number of openings can increase, and each playpipe need to install valve regulated, and this will increase gasification furnace manufacturing cost；Separately
Outside, it is identical into the tolerance needs of each playpipe, it just can guarantee that the gas that all playpipes eject can converge in gas
Change the central area of stove, this requires the valve of each playpipe to need to be adjusted in synchronism to control tolerance, and this gasifies increase
The operation difficulty of stove.
A kind of Chinese utility model patent " gas distributor of jet fluidized-bed gasification furnace " (application number：
201420499113.6, grant number CN204079921U) a kind of gas distributor of jet fluidized-bed gasification furnace is disclosed, be
The back taper distribution grid for having outlet circular hole is located at cylindrical air chamber housing upper, and its upper end is connected with cylindrical air chamber housing, under
End is connected with pre-separation reducing pipe upper end；At least 3 symmetrical gasifying agent jet nozzles are distributed on pre-separation reducing pipe.The gas
Body distributor is disadvantageous in that：(1) at least 3 symmetrical gasifying agent jet nozzles are distributed on pre-separation reducing pipe, ibid
State application number：A kind of 201210346022.4 disclosed ash-agglomerating fluidized bed gasifier gas distributor weak point (2) phase
Together；(2) back taper gas distribution grid upper end is joined directly together with cylindrical air chamber housing, and gasification furnace high-temperature can pass through back taper point
Fabric swatch is conducted to gasification furnace shell, causes case temperature to exceed design temperature, and coal gasifier belongs to II classes or Group III pressure is held
Device, sheet material allowable stress can decline rapidly after housing overtemperature, have explosion danger, it is hidden that gasifier operation has serious safety
Suffer from；(3) scum pipe upper end is pre-separation reducing pipe, and airflow scouring and deslagging under the high temperature conditions cause pre-separation reducing pipe to grind
Damage is serious, and gasification furnace is difficult to long-term operation.
Accordingly, it is desirable to provide a kind of fluidized-bed coal gasification furnace gas distributor, its can not only for a long time, efficiently, peace
Complete and stable operation, and it is simple for structure, to be simple to manufacture cost low, easy to operate.
Utility model content
In order to overcome it is above-mentioned in the prior art the shortcomings that, a purpose of the present utility model is to provide a kind of fluidized bed coal
Charcoal gasification furnace gas distributor, its can not only for a long time, efficiently, safety and stable operation, and charcoal high conversion rate, structure letter
It is clean, to be simple to manufacture cost low and easy to operate, suitable for large-scale promotion application.
To achieve the above objectives, fluidized-bed coal gasification furnace gas distributor of the present utility model, including gasification furnace shell
Body, back taper distribution grid and scum pipe, the back taper distribution grid are arranged in the gasification furnace shell so as in the back taper
Closing chamber is formed between shape distribution grid and the gasification furnace shell, the scum pipe wears the gasification furnace shell, the deslagging
The upper end of pipe is located in the closing chamber the simultaneously bottom of back taper distribution grid described in pipeline connection, and the lower end of the scum pipe is located at
Outside the gasification furnace shell, it is characterized in, the fluidized-bed coal gasification furnace also includes oxidant feed gas pipe with gas distributor
And endless tube, the oxidant feed gas pipe wear the gasification furnace shell, one end of the oxidant feed gas pipe is located at the closing
Intracavitary and endless tube described in pipeline connection, the other end of the oxidant feed gas pipe is outside the gasification furnace shell, the endless tube
Set in the closing chamber and around the scum pipe, the bottom of the back taper distribution grid is provided with more than 3 and led to
Hole, the through hole with the central axis of the back taper distribution grid in be uniformly and symmetrically distributed and the center line of the through hole with it is described
Central axis intersects, endless tube described in the through hole pipeline connection.
It is preferred that the fluidized-bed coal gasification furnace also includes jet nozzle with gas distributor, the jet nozzle is set
Put in the through hole and towards the central axis of described back taper distribution grid.
It is preferred that the pipeline of the scum pipe is cylindrical pipeline.
Taken over it is preferred that the fluidized-bed coal gasification furnace also includes deslagging with gas distributor, the deslagging takes over position
It is connected in outside the gasification furnace shell and with the gasification furnace shell, deslagging described in the lower end pipeline connection of described scum pipe
Adapter.
It is preferred that the fluidized-bed coal gasification furnace also includes gasifying agent air inlet pipe, the gasifying agent with gas distributor
Air inlet pipe wears the gasification furnace shell, and one end of the gasifying agent air inlet pipe is located in the closing chamber, and the gasifying agent enters
The other end of tracheae is horizontally disposed in the back taper distribution grid to have perforation outside the gasification furnace shell.
More preferably, fluidized-bed coal gasification furnace gas distributor also includes distribution grid nozzle, the distribution grid spray
Mouth is arranged in the perforation and towards in the back taper distribution grid.
It is preferred that the fluidized-bed coal gasification furnace also includes whirlwind refeed line, the whirlwind returning charge with gas distributor
Pipe wears the gasification furnace shell, and one end of the whirlwind refeed line is located in the closing chamber upward bending and is plugged in described
In back taper distribution grid, the center line of one end of described whirlwind refeed line intersects with the central axis, the whirlwind returning charge
The other end of pipe is outside the gasification furnace shell.
It is preferred that fluidized-bed coal gasification furnace gas distributor also includes thermal insulation layer, the fluidized-bed coal gas
Changing stove gas distributor also includes thermal insulation layer, and the thermal insulation layer is arranged on the inwall of the gasification furnace shell, the back taper
Shape distribution grid is arranged in the thermal insulation layer so as to form the closing between the back taper distribution grid and the thermal insulation layer
Chamber, the scum pipe also wear the thermal insulation layer, and the oxidant feed gas pipe also wears the thermal insulation layer.
It is preferred that the fluidized-bed coal gasification furnace also includes wearing layer with gas distributor, the wearing layer is arranged on
On the upper surface of the back taper distribution grid and the inwall of the gasification furnace shell it is upper positioned at the back taper distribution grid
On the part of side, the through hole is extended in the wearing layer.
It is preferred that the fluidized-bed coal gasification furnace also includes distribution plate support and thermal insulation barriers, institute with gas distributor
State distribution plate support to be installed on the inwall of the gasification furnace shell, the top of the back taper distribution grid passes through described heat-insulated
Part is installed on the distribution plate support.
The beneficial effects of the utility model essentially consist in：
1st, fluidized-bed coal gasification furnace of the present utility model gas distributor includes gasification furnace shell, back taper is distributed
Plate, scum pipe, oxidant feed gas pipe and endless tube, back taper distribution grid are arranged in gasification furnace shell so as in back taper distribution grid
Closing chamber is formed between gasification furnace shell, scum pipe wears gasification furnace shell, and the upper end of scum pipe is located in closing chamber and managed
Road connects the bottom of back taper distribution grid, and outside gasification furnace shell, oxidant feed gas pipe wears gasification furnace for the lower end of scum pipe
Housing, one end of oxidant feed gas pipe is located in closing chamber and pipeline connection endless tube, the other end of oxidant feed gas pipe are located at gas
Change outside furnace shell, endless tube is located in closing chamber and set around scum pipe, and the bottom of back taper distribution grid is provided with more than 3
Through hole, through hole with the central axis of back taper distribution grid in being uniformly and symmetrically distributed and the center line of through hole intersects with central axis,
Through hole pipeline connected ring pipe, therefore, its can not only for a long time, efficiently, safety and stable operation, and charcoal high conversion rate, structure
Succinctly, it is low to be simple to manufacture cost, it is easy to operate, suitable for large-scale promotion application.
2nd, fluidized-bed coal gasification furnace of the present utility model with gas distributor changes fluidized bed coal gasifier " center is penetrated
The traditional structure of stream, endless tube deslagging ", using the Novel structure of " central tube deslagging, endless tube jet ".So it is avoided that traditional structure
Middle lime-ash from endless tube discharge when, wash away central jet pipe outer wall entrainment of grey solid impurity particle in high temperature gas flow, cause central jet pipe
Gall or be broken.Enable gasification furnace long-period stable operation, gasifier operation cost is reduced, suitable for large-scale promotion application.
3rd, fluidized-bed coal gasification furnace of the present utility model includes endless tube with gas distributor, and oxidant is entered by oxidant
Tracheae projects after entering endless tube from the jet nozzle being uniformly and symmetrically distributed, and forms multiply air-flow, and air-flow converges on one point, forms one
Individual central high temperature gasification zone, oxidant enters the central high temperature gasification zone that gasification furnace is formed in this way, relative to tradition
A central tube fluidic vectoring thrust central high temperature gasification zone, fluidisation area is wider, and fluid effect is more preferable.Avoid fluid bed internal cause
Bad formation dead band is fluidized, the problems such as ash erosion occurs, suitable for large-scale promotion application.
4th, fluidized-bed coal gasification furnace of the present utility model also includes whirlwind refeed line, whirlwind refeed line with gas distributor
Gasification furnace shell is worn, one end of whirlwind refeed line is located in closing chamber and is plugged in back taper distribution grid, whirlwind refeed line
The center line of one end intersect with central axis, so, whirlwind refeed line is by the warm of the cyclone collection outside gasification furnace
State coal dust is delivered to central high temperature gasification zone in gasification furnace and in high-temperature region Quick-gasifying from the bottom of back taper distribution grid, this
Kind returning charge mode can be in the direct gas in central high temperature area compared to the hot coal dust from a certain height returning charge in distribution grid top, return
Change, the conversion ratio of charcoal greatly improved, while significantly reduce the circulating ratio of fluid bed coal dust, the mill to mitigating follow-up equipment
It is advantagious to undermine load.
5th, fluidized-bed coal gasification furnace of the present utility model is cylindrical pipeline with the pipeline of the scum pipe of gas distributor,
I.e. diameter is identical up and down, conveniently internal can carry out wear resistance lining, its reliability significantly improves, and extend scum pipe uses the longevity
Life, gasifier operation cost is reduced, suitable for large-scale promotion application.
6th, fluidized-bed coal gasification furnace of the present utility model also includes distribution plate support and thermal insulation barriers with gas distributor,
Distribution plate support is installed on the inwall of gasification furnace shell, and the top of back taper distribution grid is installed in distribution grid by thermal insulation barriers
On support member, so as to effectively avoid gasifying, furnace high-temperature is conducted to gasification furnace shell to cause wall by back taper distribution grid
The danger that face overtemperature explodes, the safety coefficient of gasifier operation is improved, suitable for large-scale promotion application.
7th, fluidized-bed coal gasification furnace of the present utility model also includes wearing layer with gas distributor, and wearing layer is arranged on down
On the upper surface of conical distribution plate and gasification furnace shell inwall on the part of the top of back taper distribution grid, can have
Effect protection gasification furnace shell, back taper distribution grid and nozzle therein are not worn, and improve gasification furnace shell and back taper distribution
Plate service life, suitable for large-scale promotion application.
These and other objects, feature and advantage of the present utility model, will by following detailed descriptions, accompanying drawing and right
Try to achieve to fully demonstrate, and can be achieved by means, device and the combinations thereof specially pointed out in appended claims.
Brief description of the drawings
Fig. 1 is the main view office of the first specific embodiment of fluidized-bed coal gasification furnace gas distributor of the present utility model
Portion's schematic cross-sectional view.
Fig. 2 is the main view schematic cross-sectional view of the jet nozzle of the specific embodiment shown in Fig. 1.
Fig. 3 is the main view schematic cross-sectional view of the distribution grid nozzle of the specific embodiment shown in Fig. 1.
Fig. 4 is the vertical view partial schematic diagram of the A-A positions of the specific embodiment shown in Fig. 1.
Fig. 5 is the region C of the specific embodiment shown in Fig. 1 enlarged diagram.
Fig. 6 is the second specific embodiment of fluidized-bed coal gasification furnace gas distributor of the present utility model similar
The vertical view partial schematic diagram of the A-A positions of specific embodiment shown in Fig. 1.
Fig. 7 is the 3rd specific embodiment of fluidized-bed coal gasification furnace gas distributor of the present utility model similar
The vertical view partial schematic diagram of the A-A positions of specific embodiment shown in Fig. 1.
Fig. 8 is the 4th specific embodiment of fluidized-bed coal gasification furnace gas distributor of the present utility model similar
The vertical view partial schematic diagram of the A-A positions of specific embodiment shown in Fig. 1.
(symbol description)
1 gasification furnace shell；2 back taper distribution grids；3 scum pipes；4 oxidant feed gas pipes；5 endless tubes；6 closing chambers；7 through holes；8
Jet nozzle；9 gradual shrinkage nozzles；10 wearing layers；11 deslagging air inlet pipe；12 deslagginves are taken over；13 gasifying agent air inlet pipe；14 perforation；
15 distribution grid nozzles；16 venturi type nozzles；17 distribution plate supports；18 thermal insulation barriers；19 arch brace parts；20 annulus are heat-insulated
Part；21 annular edges；22 support reinforcement；23 fixtures；24 whirlwind refeed lines；25 thermal insulation layers.
Embodiment
In order to be more clearly understood that technology contents of the present utility model, described in detail especially exemplified by following examples.
Refer to shown in Fig. 1 to Fig. 5, in the first specific embodiment of the present utility model, fluid bed of the present utility model
Coal gasification furnace gas distributor includes gasification furnace shell 1, back taper distribution grid 2, scum pipe 3, oxidant feed gas pipe 4 and ring
Pipe 5, the back taper distribution grid 2 are arranged in the gasification furnace shell 1 so as in the back taper distribution grid 2 and the gasification
Closing chamber 6 is formed between furnace shell 1, the scum pipe 3 wears the gasification furnace shell 1, and the upper end of the scum pipe 3 is located at institute
The bottom of the interior simultaneously back taper distribution grid 2 described in pipeline connection of closing chamber 6 is stated, the lower end of the scum pipe 3 is located at the gasification furnace
Outside housing 1, the oxidant feed gas pipe 4 wears the gasification furnace shell 1, and one end of the oxidant feed gas pipe 4 is positioned at described
In closing chamber 6 and endless tube 5 described in pipeline connection, the other end of the oxidant feed gas pipe 4 gasify outside furnace shell 1 positioned at described,
The endless tube 5 is located in the closing chamber 6 and set around the scum pipe 3, and the bottom of the back taper distribution grid 2 is provided with
The through hole 7 of more than 3, the through hole 7 is with the central axis of the back taper distribution grid 2 in being uniformly and symmetrically distributed and the through hole
7 center line intersects with the central axis, endless tube 5 described in the pipeline connection of through hole 7.
The number of the through hole 7 can determine as needed, because the through hole 7 is with the back taper distribution grid 2
Mandrel line is in be uniformly and symmetrically distributed, so, the through hole 7 is located on same circumference, refers to shown in Fig. 1 and Fig. 4, in this practicality
In the first new specific embodiment, the number of the through hole 7 is 4, and the through hole 7 is set at 90 ° intervals.Refer to Fig. 6 institutes
Show, in the second specific embodiment of the present utility model, the number of the through hole 7 is 3, and the through hole 7 is spaced 120 ° of settings.
Shown in Figure 7, in the 3rd specific embodiment of the present utility model, the number of the through hole 7 is 5, between the through hole 7
Every 72 ° of settings.Shown in Figure 8, in the 4th specific embodiment of the present utility model, the number of the through hole 7 is 6,
The through hole 7 is spaced 60 ° of settings.
The diameter of circumference where the through hole 7 can determine as needed, in the of the present utility model first specific implementation
In example, the diameter of the circumference where the through hole 7 is the outer diameter D 1 of the endless tube 5 and the sum of outer diameter D 2 of the scum pipe 3
Half.
The diameter of the through hole 7 can determine as needed, it is preferred that a diameter of 25mm~160mm of the through hole 7.
In the first specific embodiment of the present utility model, a diameter of 70mm of the through hole 7.It is specific real of the present utility model second
Apply in example, a diameter of 90mm of the through hole 7.In the 3rd specific embodiment of the present utility model, the through hole 7 it is a diameter of
65mm.In the 4th specific embodiment of the present utility model, a diameter of 50mm of the through hole 7.
The center line of described through hole 7 can determine as needed with the angle beta of the central axis, it is preferred that described
The angle beta of center line and the central axis of through hole 7 be 10 °~35 °.In the first specific embodiment of the present utility model
In, the center line of described through hole 7 is 30 ° with the angle beta of the central axis.In the second specific embodiment of the present utility model
In, the center line of described through hole 7 is 35 ° with the angle beta of the central axis.In the 3rd specific embodiment of the present utility model
In, the center line of described through hole 7 is 22 ° with the angle beta of the central axis.In the 4th specific embodiment of the present utility model
In, the center line of described through hole 7 is 10 ° with the angle beta of the central axis.
The center line of described through hole 7 can pool a point B, and point B is located on central axis, can not also pooled
One point B, shown in Figure 1, in the first specific embodiment of the present utility model, the center line of described through hole 7 pools
One point B.
Endless tube 5 described in one end pipeline connection of the oxidant feed gas pipe 4 can be with any conjunction of endless tube described in pipeline connection 5
Suitable position, it is shown in Figure 1, in the first specific embodiment of the present utility model, the one of described oxidant feed gas pipe 4
Hold the bottom of endless tube 5 described in pipeline connection.
One end of described oxidant feed gas pipe 4 can determine as needed from the bottom distance h of the endless tube 5, compared with
Goodly, one end of described oxidant feed gas pipe 4 is 10mm~50mm from the bottom distance h of the endless tube 5.It is new in this practicality
In first specific embodiment of type, one end of described oxidant feed gas pipe 4 is from being 30mm with a distance from the bottom of the endless tube 5.
In the second specific embodiment of the present utility model, one end of described oxidant feed gas pipe 4 from the bottom of the endless tube 5 away from
From for 10mm.In the 3rd specific embodiment of the present utility model, one end of described oxidant feed gas pipe 4 is from the endless tube 5
The distance of bottom be 28mm.In the 4th specific embodiment of the present utility model, one end of described oxidant feed gas pipe 4 from
The distance of the bottom of the endless tube 5 is 50mm.
The ratio between the outer diameter D 1 of the endless tube 5 and the outer diameter D 2 of the scum pipe 3 can determine as needed, the endless tube 5
Outer diameter D 1 and the ratio between the outer diameter D 2 of the scum pipe 3 be 2~3.In the first specific embodiment of the present utility model, the ring
The ratio between the outer diameter D 1 of pipe 5 and the outer diameter D 2 of the scum pipe 3 are 2.5.It is described in the second specific embodiment of the present utility model
The ratio between the outer diameter D 1 of endless tube 5 and the outer diameter D 2 of the scum pipe 3 are 3.0.In the 3rd specific embodiment of the present utility model, institute
The ratio between the outer diameter D 1 of endless tube 5 and the outer diameter D 2 of the scum pipe 3 are stated as 2.2.In the 4th specific embodiment of the present utility model,
The ratio between the outer diameter D 1 of the endless tube 5 and the outer diameter D 2 of the scum pipe 3 are 2.0.
The endless tube 5 can be independent relative to the back taper distribution grid 2, can also be connected with each other, it is preferred that described
The top of endless tube 5 is connected with the bottom of described back taper distribution grid 2.It is shown in Figure 1, in the of the present utility model first tool
In body embodiment, the top of described endless tube 5 is lacked to form opening, and the bottom of described back taper distribution grid 2 is covered described
Endless tube 5 opening on, in other words, the bottom of described back taper distribution grid 2 turns into the top of described endless tube 5.
The endless tube 5 can be independent relative to the scum pipe 3, can also be connected with each other, it is preferred that the endless tube 5
Inwall connects the side wall of the scum pipe 3, and more preferably, the inwall of the endless tube 5 lacks to form breach, the side of the scum pipe 3
Wall is covered on the breach of described endless tube 5, and in other words, the side wall of the scum pipe 3 turns into the inwall of described endless tube 5.
It is shown in Figure 1, in the first specific embodiment of the present utility model, lack to form opening at the top of described endless tube 5
And in the case that the bottom of described back taper distribution grid 2 is covered in the opening of described endless tube 5, described scum pipe 3
Side wall top cover on the breach of described endless tube 5, in other words, the top of the side wall of the scum pipe 3 turns into institute
The inwall for the endless tube 5 stated.Thus, the endless tube 5 turns between the pipe and back taper distribution grid 2 and scum pipe 3 of bottom closure
Form closed structure.
For preferably gas injection, refer to shown in Fig. 1 and Fig. 2, in the first specific embodiment of the present utility model,
The fluidized-bed coal gasification furnace also includes jet nozzle 8 with gas distributor, and the jet nozzle 8 is arranged on the through hole 7
In and towards the top of the back taper distribution grid 2.
The jet nozzle 8 can be any suitable nozzle, it is preferred that the jet nozzle 8 is gradual shrinkage nozzle 9.
The ratio between air inlet internal diameter D6 and outlet internal diameter D5 of the gradual shrinkage nozzle 9 for example can be 1.2~2.5.Of the present utility model
In first specific embodiment, the ratio between air inlet internal diameter D6 and outlet internal diameter D5 of the gradual shrinkage nozzle 9 are 1.2.It is new in this practicality
In second specific embodiment of type, the ratio between air inlet internal diameter D6 and outlet internal diameter D5 of the gradual shrinkage nozzle 9 are 2.1.In this reality
With in the 3rd new specific embodiment, the ratio between air inlet internal diameter D6 and outlet internal diameter D5 of the gradual shrinkage nozzle 9 are 1.6.
In 4th specific embodiment of the present utility model, the ratio between air inlet internal diameter D6 and outlet internal diameter D5 of the gradual shrinkage nozzle 9 are
2.5。
The length H of the jet nozzle 8 can determine as needed, exist on back taper distribution grid 2 wearing layer 10 (see
It is described below) in the case of, it is preferred that the length H of the jet nozzle 8 is 70mm~150mm, its optimum length can be according to
The thickness of conical distribution plate 2 and wearing layer 10 suitably adjusts.The jet nozzle 8 also wears wearing layer 10, the jet nozzle 8
Head be embedded in the wearing layer 10, and with the flush with outer surface of wearing layer 10.It is specific real of the present utility model first
Apply in example, the length H of the jet nozzle 8 is 100mm.In the second specific embodiment of the present utility model, the jet spray
The length H of mouth 8 is 150mm.In the 3rd specific embodiment of the present utility model, the length H of the jet nozzle 8 is 96mm.
In the 4th specific embodiment of the present utility model, the length H of the jet nozzle 8 is 70mm.
In order to prevent the scum pipe 3 high temperature gas flow carry secretly grey solid impurity particle wash away it is lower be easily worn through, refer to Fig. 1 institutes
Show, in the first specific embodiment of the present utility model, the pipeline of the scum pipe 3 is cylindrical pipeline.
, please in order to control the bed drain purge of scum pipe 3, cool down lime-ash, prevent the synthesis gas on gasification furnace top from entering scum pipe 3
It is shown in Figure 1, in the first specific embodiment of the present utility model, the fluidized-bed coal gasification furnace with gas distributor also
Including deslagging air inlet pipe 11, the deslagging air inlet pipe 11 and the lower end pipeline connection of described scum pipe 3.Gasifying agent can be by arranging
Slag air inlet pipe 11 enters in scum pipe 3, plays the bed drain purge of control scum pipe 3, the synthesis for cooling down lime-ash, preventing gasification furnace top
Gas enters the effect of scum pipe 3.
In order to avoid the scum pipe 3 is joined directly together with the gasification furnace shell 1 and cause the wall of the gasification furnace shell 1
Face overtemperature, it is preferred that the fluidized-bed coal gasification furnace also includes deslagging adapter 12, the deslagging adapter 12 with gas distributor
It is connected outside the gasification furnace shell 1 and with the gasification furnace shell 1, the lower end pipeline connection institute of described scum pipe 3
State deslagging adapter 12.It is shown in Figure 1, in the first specific embodiment of the present utility model, in the fluidized-bed coal gas
Change stove with gas distributor also including in the case of deslagging air inlet pipe 11, the deslagging air inlet pipe 11 is managed with the deslagging adapter 12
Road connects.I.e. described deslagging air inlet pipe 11 passes through the deslagging adapter 12 and the indirect pipeline connection in lower end of described scum pipe 3.
In order that the material in fluid bed is in fluidized state, and material is collected to middle high-temperature region, refer to Fig. 1 institutes
Show, in the first specific embodiment of the present utility model, the fluidized-bed coal gasification furnace also includes gasification with gas distributor
Agent air inlet pipe 13, the gasifying agent air inlet pipe 13 wear the gasification furnace shell 1, and one end of the gasifying agent air inlet pipe 13 is located at
In the closing chamber 6, the other end of the gasifying agent air inlet pipe 13 is outside the gasification furnace shell 1, the back taper distribution
It is horizontally disposed in plate 2 to have perforation 14.
For preferably gas injection, refer to shown in Fig. 1 and Fig. 3, in the first specific embodiment of the present utility model,
Fluidized-bed coal gasification furnace gas distributor also includes distribution grid nozzle 15, and the distribution grid nozzle 15 is arranged on described
In perforation 14 and towards in the back taper distribution grid 2.
The distribution grid nozzle 15 can be any suitable nozzle, it is preferred that the distribution grid nozzle 15 is venturi
Formula nozzle 16.The ratio between air inlet internal diameter D3 and outlet internal diameter D4 of the venturi type nozzle 16 for example can be 1.2~2.2.
In first specific embodiment of the present utility model, the ratio between air inlet internal diameter D3 and outlet internal diameter D4 of the venturi type nozzle 16 are
1.2.In the second specific embodiment of the present utility model, the air inlet internal diameter D3 and outlet internal diameter D4 of the venturi type nozzle 16
The ratio between be 1.6.In the 3rd specific embodiment of the present utility model, the air inlet internal diameter D3 and outlet of the venturi type nozzle 16
The ratio between internal diameter D4 is 1.8.In the 4th specific embodiment of the present utility model, the air inlet internal diameter D3 of the venturi type nozzle 16
It is 2.2 with the ratio between outlet internal diameter D4.
The length L of the distribution grid nozzle 15 can determine wearing layer 10 on back taper distribution grid 2 be present as needed
In the case of (seeing below described), it is preferred that the length L of the distribution grid nozzle 15 is 80mm~150mm, its optimum length can
Suitably adjusted according to the thickness of back taper distribution grid 2 and wearing layer 10.The distribution grid nozzle 15 also wears wearing layer 10, described
The head of distribution grid nozzle 15 is embedded in the wearing layer 10, and the distribution grid nozzle 15 can be protected not to be worn.In this reality
With in the first new specific embodiment, the length L of the distribution grid nozzle 15 is 100mm.In the of the present utility model second tool
In body embodiment, the length L of the distribution grid nozzle 15 is 150mm.It is described in the 3rd specific embodiment of the present utility model
The length L of distribution grid nozzle 15 is 92mm.In the 4th specific embodiment of the present utility model, the length of the distribution grid nozzle 15
Degree L is 80mm.
The perforation 14 can be uniformly arranged in the back taper distribution grid 2, uneven can also be arranged on it is described fall
Shown in Figure 1 in conical distribution plate 2, in the first specific embodiment of the present utility model, the perforation 14 is uniformly arranged
In the back taper distribution grid 2.
The percent opening of the perforation 14 can determine as needed, it is preferred that the percent opening of the perforation 14 for 1.8%~
2.5%.In the first specific embodiment of the present utility model, the percent opening of the perforation 14 is 1.8%.Of the present utility model
In second specific embodiment, the percent opening of the perforation 14 is 2.0%.In the 3rd specific embodiment of the present utility model, institute
The percent opening for stating perforation 14 is 2.3%.In the 4th specific embodiment of the present utility model, the percent opening of the perforation 14 is
2.5%.
The diameter of the perforation 14 can determine as needed, it is preferred that a diameter of 10mm~22mm of the perforation 14.
In the first specific embodiment of the present utility model, a diameter of 20mm of the perforation 14.It is specific of the present utility model second
In embodiment, a diameter of 22mm of the perforation 14.In the 3rd specific embodiment of the present utility model, it is described perforation 14 it is straight
Footpath is 16mm.In the 4th specific embodiment of the present utility model, a diameter of 10mm of the perforation 14.
The taper theta of the back taper distribution grid 2 can determine as needed, it is preferred that the cone of the back taper distribution grid 2
It is 80 °~120 ° to spend θ.In the first specific embodiment of the present utility model, the taper theta of the back taper distribution grid 2 is 108 °.
In the second specific embodiment of the present utility model, the taper theta of the back taper distribution grid 2 is 120 °.Of the present utility model
In 3rd specific embodiment, the taper theta of the back taper distribution grid 2 is 95 °.In the 4th specific embodiment of the present utility model
In, the taper theta of the back taper distribution grid 2 is 80 °.
The back taper distribution grid 2, which is arranged in the gasification furnace shell 1, can use any suitable structure, refer to
Shown in Fig. 1 and Fig. 5, in the first specific embodiment of the present utility model, the fluidized-bed coal gasification furnace gas distributor
Also include distribution plate support 17 and thermal insulation barriers 18, the distribution plate support 17 is installed in the inwall of the gasification furnace shell 1
On, the top of the back taper distribution grid 2 is installed on the distribution plate support 17 by the thermal insulation barriers 18.
The distribution plate support 17 can be any suitable distribution plate support, and the thermal insulation barriers 18 can be any
Suitable thermal insulation barriers, refer to shown in Fig. 1 and Fig. 5, in the first specific embodiment of the present utility model, the distribution grid support
Part 17 is arch brace part 19, and the thermal insulation barriers 18 are annulus thermal insulation barriers 20, the outside of the arch brace part 19 install (such as
Weld or be integrally formed) on the inwall of described gasification furnace shell 1, the top of described back taper distribution grid 2 has radially
The annular edge 21 to extend outwardly, the annular edge 21 are installed in the arch brace part 19 by the annulus thermal insulation barriers 20
On.
The width of the arch brace part 19 can determine as needed, it is preferred that the width of the arch brace part 19
For 60mm~150mm.In the first specific embodiment of the present utility model, the width of the arch brace part 19 is 120mm.
In order to increase the intensity of the distribution plate support 17, refer to shown in Fig. 1 and Fig. 5, of the present utility model the
In one specific embodiment, fluidized-bed coal gasification furnace gas distributor also includes support reinforcement 22, and the support adds
Strong part 22 connects the inwall of the distribution plate support 17 and described gasification furnace shell 1 respectively.
The support reinforcement 22 can be any suitable support reinforcement, refer to shown in Fig. 1 and Fig. 5, in this reality
With in the first new specific embodiment, the support reinforcement 22 is gusseted muscle.
The thermal insulation barriers 18 can be any suitable thermal insulation barriers, in the first specific embodiment of the present utility model, institute
It is ceramic fiber blanket to state thermal insulation barriers 18.
The thickness of the thermal insulation barriers 18 determines as needed, it is preferred that the thickness of the thermal insulation barriers 18 is 6mm~10mm.
In the first specific embodiment of the present utility model, the thickness of the thermal insulation barriers 18 is 10mm.
The top of the back taper distribution grid 2 is installed in by the thermal insulation barriers 18 can be with the distribution plate support 17
Using any suitable structure, it is preferred that fluidized-bed coal gasification furnace gas distributor also includes fixture 23, it is described
Fixture 23 wears top, the thermal insulation barriers 18 and the distribution plate support 17 of described back taper distribution grid 2 so that will
Top, the thermal insulation barriers 18 and the distribution plate support 17 of described back taper distribution grid 2 are fixed.Refer to Fig. 1 and Fig. 5
It is shown, in the first specific embodiment of the present utility model, it is described distribution plate support 17 be arch brace part 19, it is described every
Warmware 18 has the annular edge 21 radially extended for the top of annulus thermal insulation barriers 20 and described back taper distribution grid 2
In the case of, the fixture 23 wear the annular edge 21, the annulus thermal insulation barriers 20 and the arch brace part 19 from
And the annular edge 21, the annulus thermal insulation barriers 20 and the arch brace part 19 are fixed.
The fixture 23 can be any suitable fixture, in the first specific embodiment of the present utility model, institute
Stating fixture 23 includes screw bolt and nut, top, the thermal insulation barriers 18 and the distribution grid branch of described back taper distribution grid 2
Support member 17 is respectively arranged with the first fixing hole (not shown), the second fixing hole (not shown) and the 3rd fixing hole (figure
Not shown in), the bolt wears first fixing hole, second fixing hole and the 3rd fixing hole and and the spiral shell
Mother is fixed.
The diameter of first fixing hole, second fixing hole and the 3rd fixing hole can determine as needed,
It is preferred that a diameter of 20mm~40mm of first fixing hole, second fixing hole and the 3rd fixing hole.In this reality
With in the first new specific embodiment, the diameter of first fixing hole, second fixing hole and the 3rd fixing hole
For 30mm.
The number of aperture of first fixing hole, second fixing hole and the 3rd fixing hole can be true as needed
Fixed, the optimal number of aperture of first fixing hole, second fixing hole and the 3rd fixing hole can be according to gasification furnace shell 1
Size suitably adjusts.
It is shown in Figure 1 in order to improve the conversion ratio of charcoal, in the first specific embodiment of the present utility model, institute
Stating fluidized-bed coal gasification furnace gas distributor also includes whirlwind refeed line 24, and the whirlwind refeed line 24 wears the gasification
Furnace shell 1, one end of the whirlwind refeed line 24 is located in the closing chamber 6 and bending is plugged in the back taper distribution upwards
In plate 2, the center line of one end of described whirlwind refeed line 24 intersects with the central axis, the whirlwind refeed line 24 it is another
One end is outside the gasification furnace shell 1.
The center line of one end of described whirlwind refeed line 24 can be true as needed with the angle [alpha] of the central axis
It is fixed, it is preferred that the angle [alpha] of the center line of one end of described whirlwind refeed line 24 and the central axis is 20 °~60 °.
In first specific embodiment of the present utility model, the center line and the central axis of one end of described whirlwind refeed line 24
Angle [alpha] is 46 °.In the second specific embodiment of the present utility model, the center line of one end of described whirlwind refeed line 24 with
The angle [alpha] of the central axis is 60 °.In the 3rd specific embodiment of the present utility model, described whirlwind refeed line 24
The angle [alpha] of the center line of one end and the central axis is 38 °.It is described in the 4th specific embodiment of the present utility model
The angle [alpha] of the center line of one end of whirlwind refeed line 24 and the central axis is 32 °.
One end of the whirlwind refeed line 24, which is plugged in the back taper distribution grid 2, can be plugged in the back taper point
Any suitable position of fabric swatch 2, shown in Figure 1, in the first specific embodiment of the present utility model, the whirlwind returns
One end of expects pipe 24 is plugged in the bottom of the back taper distribution grid 2.
In order to avoid gasification furnace high-temperature is conducted to gasification furnace shell 1 and causes wall overtemperature that explosion danger occurs, preferably
Ground, the fluidized-bed coal gasification furnace also include thermal insulation layer 25 with gas distributor, and the thermal insulation layer 25 is arranged on the gasification
On the inwall of furnace shell 1, the back taper distribution grid 2 is arranged in the thermal insulation layer 25 so as in the back taper distribution grid 2
The closing chamber 6 is formed between the thermal insulation layer 25, the scum pipe 3 also wears the thermal insulation layer 25, and the oxidant enters
Tracheae 4 also wears the thermal insulation layer 25.Refer to shown in Fig. 1 and Fig. 5, in the first specific embodiment of the present utility model,
In the case that the fluidized-bed coal gasification furnace also includes gasifying agent air inlet pipe 13 with gas distributor, the gasifying agent air inlet pipe
13 also wear the thermal insulation layer 25；Also include the feelings of whirlwind refeed line 24 with gas distributor in the fluidized-bed coal gasification furnace
Under condition, the whirlwind refeed line 24 also wears the thermal insulation layer 25；The fluidized-bed coal gasification furnace with gas distributor also
In the case of including distribution plate support 17 and thermal insulation barriers 18, the distribution plate support 17 and the thermal insulation barriers 18 are arranged on institute
Between the inwall for stating thermal insulation layer 25 and described gasification furnace shell 1, the top of described back taper distribution grid 2 wears described heat-insulated
Layer 25；In the case where the fluidized-bed coal gasification furnace also includes deslagging adapter 12 with gas distributor, the deslagging adapter
12 inwall is also equipped with the thermal insulation layer 25.
The thermal insulation layer 25 can be any suitable thermal insulation layer, in the first specific embodiment of the present utility model, institute
It is heat-insulation light cast bed of material to state thermal insulation layer 25.
The thickness of the thermal insulation layer 25 can determine as needed, it is preferred that the thickness of the thermal insulation layer 25 be 80mm~
250mm.In the first specific embodiment of the present utility model, the thickness of the thermal insulation layer 25 is 150mm.
In order to protect gasification furnace shell 1, back taper distribution grid 2 and nozzle therein such as jet nozzle 8 and distribution grid spray
Mouth 15 is not worn, it is preferred that the fluidized-bed coal gasification furnace also includes wearing layer 10, the wearing layer with gas distributor
10 are arranged on the upper surface of the back taper distribution grid 2 and the inwall of the gasification furnace shell 1 is located at the back taper
On the part of the top of distribution grid 2, the through hole 7 is extended in the wearing layer 10.Refer to shown in Fig. 1 and Fig. 5, in this reality
With in the first new specific embodiment, in the back taper distribution grid 2 it is horizontally disposed have perforation 14 in the case of,
The perforation 14 is extended in the wearing layer 10.Also include thermal insulation layer with gas distributor in the fluidized-bed coal gasification furnace
In the case of 25, the wearing layer 10 is arranged on the upper surface of the back taper distribution grid 2 and the position of the thermal insulation layer 25
In on the part of the top of the back taper distribution grid 2；Also include row with gas distributor in the fluidized-bed coal gasification furnace
In the case of slag adapter 12, the inwall of the deslagging adapter 12 is also equipped with the wearing layer 10；In the deslagging adapter 12
In the case that inwall is also equipped with the thermal insulation layer 25, the wearing layer 10 is arranged on the inner side of thermal insulation layer 25.The deslagging
The inner surface of the lower end of pipe 3 (has lining (such as thermal insulation layer 25, wearing layer 10 etc.), refers to lining with the inner surface of deslagging adapter 12
In inner surface) it is concordant.
The wearing layer 10 can be any suitable wearing layer, in the first specific embodiment of the present utility model, institute
It is corundum castable layer to state wearing layer 10.
The thickness of the wearing layer 10 can determine as needed, it is preferred that the thickness of the wearing layer 10 be 50mm~
100mm.In the first specific embodiment of the present utility model, the thickness of the wearing layer 10 is 60mm.
It is shown in Figure 1 in order to compensate the expanding with heat and contract with cold in pipe lengths, in the of the present utility model first tool
In body embodiment, the oxidant feed gas pipe 4, the scum pipe 3, the whirlwind refeed line 24 are provided with expansion joint.
In use, through hole 7 of the oxidant after the entrance endless tube 5 of oxidant feed gas pipe 4 by being arranged in back taper distribution grid 2
Interior jet nozzle 8 projects, and is gathered together to form central high temperature gasification zone；Gasifying agent is entered by gasifying agent air inlet pipe 13 to be sealed
Closed chamber 6, then the distribution grid nozzle 15 by being arranged in the perforation 14 in back taper distribution grid 2 form high velocity air, make gasification
Material in stove is fully fluidized and assembled to gasification furnace center；Whirlwind refeed line 24 is by the cyclone collection outside gasification furnace
Hot coal dust return to the central high temperature area in gasification furnace from the bottom of back taper distribution grid 2 and directly participate in reacting, improve charcoal
Conversion ratio.Gasifying agent is also entered in scum pipe 3 by deslagging air inlet pipe 11, plays bed drain purge, the cooling ash of control scum pipe 3
Slag, prevent the synthesis gas on gasification furnace top from entering the effect of scum pipe 3.
The beneficial effects of the utility model essentially consist in：
(1) the utility model changes the traditional structure of fluidized bed coal gasifier " central jet, endless tube deslagging ", uses
The Novel structure of " central tube deslagging, endless tube jet ".So it is avoided that in traditional structure lime-ash from endless tube discharge when, in High Temperature Gas
Stream washes away central jet pipe outer wall entrainment of grey solid impurity particle, causes central jet pipe to gall or be broken.Enable gasification furnace long period
Stable operation, reduce gasifier operation cost.
(2) using endless tube is set around the bottom of back taper distribution grid and scum pipe, oxidant is entered by oxidant
Tracheae projects after entering endless tube from the jet nozzle being uniformly and symmetrically distributed, and forms multiply air-flow, and air-flow converges on one point, the point position
In on the central axis of back taper distribution grid, multiply air-flow is tapered, forms a central high temperature gasification zone, air-flow and central shaft
The corner dimension of line is 10 °~35 °, and optimum angle size can determine according to actual gasification furnace bed height.Oxidant passes through
This mode enters the central high temperature gasification zone that gasification furnace is formed, high relative to the center of a traditional central tube fluidic vectoring thrust
Warm gasification zone, fluidisation area is wider, and fluid effect is more preferable.Avoid fluid bed internal cause from fluidizing bad formation dead band, occur tying in stove
The problems such as slag.
(3) whirlwind refeed line by the hot coal dust of the cyclone collection outside gasification furnace under back taper distribution grid
Portion is delivered to the central high temperature gasification zone in gasification furnace and in high-temperature region Quick-gasifying, and this returning charge mode is compared to from back taper
The conversion ratio of charcoal can greatly improved in central high temperature area direct gasification in the returning charge of distribution grid top, the hot coal dust of return.Together
When in order to prevent the coal dust level returned from liquidating back taper distribution grid aggravate the abrasion of back taper distribution grid, whirlwind refeed line is set
The form of upward bending is counted into, the angle of its center line and the central axis of back taper distribution grid is 20 °~60 °, optimum angle
Can suitably it be adjusted according to the taper of back taper distribution grid, this mode can not only return to coal dust central high temperature area, and
It is possible to prevente effectively from coal dust washes away back taper distribution grid, back taper distribution grid service life is improved.
(4) traditional endless tube slagging structure becomes pipe deslagging after eliminating the central tube of inside, and deslagging can be more smooth, row
The lime-ash particle size range gone out is wider.Avoid because gasification furnace internal cause fluidizes the larger clinker of bad slagging formation or because in gasification furnace
Lining spalling and block scum pipe, cause deslagging not smooth and influence gasification furnace production.Deslagging improves gasification in this way
The stability of stove operation.
(5) scum pipe is upper and lower diameter identical pipe, eliminates the Venturi tube structure on top.Traditional scum pipe top
Why it is designed to that Venturi tube structure reason is：Gasifying agent entrance is arranged at bottom in scum pipe, and the effect of this strand of air-flow is control
The bed drain purge of scum pipe, cool down lime-ash, prevent the synthesis gas on gasification furnace top from entering scum pipe.Traditional scum pipe is endless tube knot
Structure, in order that deslagging is smooth, have no alternative but increase the size of outer tube of endless tube to improve deslagging actual internal area.In scum pipe bottom
Under the gasification agent flux of entrance is certain, gas velocity can be reduced by improving deslagging actual internal area, and the effect of this strand of gasifying agent is not complete
Display, therefore Venturi tube structure is set on the top of scum pipe, to improve the gas velocity of gasifying agent.Cancel in existing structure
Endless tube inner central tube, becomes pipe deslagging, can be under the premise of ensureing deslagging smoothly, the appropriate caliber chi for adjusting scum pipe
It is very little to obtain rational gasifying agent gas velocity, so the top of scum pipe also just It is not necessary to set Venturi tube structure again.Venturi
Structure high temperature gas flow carry secretly grey solid impurity particle wash away it is lower be easily worn through, and upper and lower diameter identical pipe wearability is relatively
Height, the service life of scum pipe is extended, reduce gasifier operation cost.
(6) the back taper distribution grid of traditional gasification furnace be reverse taper the downward fillet turnup structure of Upper vertical, flange branch
Support is in a cone being connected with gasification furnace, and the cone processing and manufacturing difficulty of this fillet flange is larger, and manufacturing cost is very high.
Back taper distributing plate structure provided by the utility model is simple, and processing and manufacturing is relatively easy.Back taper distribution grid is to be overlapped on point
On cloth plate support, and a thermal insulation barriers are padded therebetween, it is possible to prevente effectively from gasification furnace high-temperature passes through back taper
Distribution grid conducts to gasification furnace shell and causes wall overtemperature that explosion danger occurs.In addition, by the way of bolt and nut fastening
Back taper distribution grid is fixed on distribution plate support, effectively overcomes and welds insecure drawback at high temperature.Back taper
Distribution grid uses this structure type and mounting means, has not only saved gasification furnace processing cost, has more improved gasifier operation
Safety coefficient.
(7) multiple lateral apertures (i.e. above-mentioned perforation), the i.e. center line and back taper in hole are uniformly opened up on back taper distribution grid
The central axis upright of distribution grid.The material that opening up lateral aperture can be reduced on back taper distribution grid is drained under gasification furnace from hole
The closing chamber in portion, cause closing chamber overtemperature or catch fire.In addition, opening up lateral aperture can be gathered in material in gasification furnace
The heart, blown afloat by the oxidant ejected from jet nozzle, form central high temperature gasification zone, improve the conversion ratio of charcoal.It is each horizontal
Distribution grid nozzle is installed in hole, and distribution grid nozzle is venturi form, can improve intake velocity, goods fluid effect is more preferable.
(8) upper surface of back taper distribution grid sets wearing layer, can effectively protect back taper distribution grid and nozzle (including to penetrate
Flow nozzle and distribution grid nozzle) it is not worn, improve back taper distribution grid service life.
Therefore, the utility model changes the traditional structure of fluidized-bed gasification furnace " central jet, endless tube deslagging ", using " in
The Novel structure of heart pipe deslagging, endless tube jet ", oxidant is by back taper distribution grid bottom, being distributed in around scum pipe
Endless tube forms central high temperature gasification zone from the center for the uniform directive gasification furnace of jet nozzle being arranged in back taper distribution grid.
Scum pipe is upper and lower diameter identical pipe, cancels the Venturi tube structure on original scum pipe top.Whirlwind refeed line passes through back taper
Shape distribution grid, the hot coal dust of the cyclone collection outside gasification furnace is delivered in gasification furnace from the bottom of distribution grid
Central high temperature area directly participates in reacting, and the gas production of gasification furnace greatly improved.In addition, the structure type of back taper distribution grid and
Corresponding improvement is also made with the connected mode for the furnace shell that gasifies.The utility model is not only simple in structure, and manufacturing cost is low, and
Can long period, efficient and stable operation.
To sum up, fluidized-bed coal gasification furnace gas distributor of the present utility model can not only for a long time, efficiently, safety and
Stable operation, and it is simple for structure, to be simple to manufacture cost low, easy to operate, suitable for large-scale promotion application.
As can be seen here, the purpose of this utility model is achieved completely and effectively.Function of the present utility model and
Structural principle is shown and illustrated in embodiment, and under without departing substantially from the principle, embodiment can make any modification.Institute
So that the utility model includes all variant embodiments based on claim spirit and right.
Claims (10)
1. a kind of fluidized-bed coal gasification furnace gas distributor, including gasification furnace shell, back taper distribution grid and scum pipe, institute
State back taper distribution grid be arranged on it is described gasification furnace shell in so as to the back taper distribution grid and it is described gasification furnace shell it
Between form closing chamber, the scum pipe wears the gasification furnace shell, and the upper end of the scum pipe is located in the closing chamber simultaneously
The bottom of back taper distribution grid described in pipeline connection, outside the gasification furnace shell, its feature exists for the lower end of the scum pipe
In the fluidized-bed coal gasification furnace also includes oxidant feed gas pipe and endless tube, the oxidant feed gas pipe with gas distributor
The gasification furnace shell is worn, one end of the oxidant feed gas pipe is located in the closing chamber and endless tube described in pipeline connection,
Outside the gasification furnace shell, the endless tube is located in the closing chamber and around institute the other end of the oxidant feed gas pipe
Scum pipe setting is stated, the bottom of the back taper distribution grid is provided with the through hole of more than 3, and the through hole is with the back taper point
The central axis of fabric swatch is in being uniformly and symmetrically distributed and the center line of the through hole intersects with the central axis, the through hole pipeline
Connect the endless tube.
2. fluidized-bed coal gasification furnace gas distributor as claimed in claim 1, it is characterised in that the fluidized-bed coal
Gasification furnace gas distributor also includes jet nozzle, and the jet nozzle is arranged in the through hole and towards described back taper
The central axis of shape distribution grid.
3. fluidized-bed coal gasification furnace gas distributor as claimed in claim 1, it is characterised in that the pipe of the scum pipe
Road is cylindrical pipeline.
4. fluidized-bed coal gasification furnace gas distributor as claimed in claim 1, it is characterised in that the fluidized-bed coal
Gasification furnace also includes deslagging with gas distributor and taken over, deslagging adapter it is outer positioned at the gasification furnace shell and with the gasification
Furnace shell is connected, and deslagging described in the lower end pipeline connection of described scum pipe is taken over.
5. fluidized-bed coal gasification furnace gas distributor as claimed in claim 1, it is characterised in that the fluidized-bed coal
Gasification furnace gas distributor also includes gasifying agent air inlet pipe, and the gasifying agent air inlet pipe wears the gasification furnace shell, described
One end of gasifying agent air inlet pipe is located in the closing chamber, and the other end of the gasifying agent air inlet pipe is located at the gasification furnace shell
Outside, it is horizontally disposed in the back taper distribution grid to have perforation.
6. fluidized-bed coal gasification furnace gas distributor as claimed in claim 5, it is characterised in that the fluidized-bed coal
Gasification furnace gas distributor also includes distribution grid nozzle, the distribution grid nozzle be arranged in the perforation and towards it is described fall
In conical distribution plate.
7. fluidized-bed coal gasification furnace gas distributor as claimed in claim 1, it is characterised in that the fluidized-bed coal
Gasification furnace also includes whirlwind refeed line with gas distributor, and the whirlwind refeed line wears the gasification furnace shell, the whirlwind
One end of refeed line is located in the closing chamber upward bending and is plugged in the back taper distribution grid, described whirlwind returning charge
The center line of one end of pipe intersects with the central axis, and the other end of the whirlwind refeed line is located at the gasification furnace shell
Outside.
8. fluidized-bed coal gasification furnace gas distributor as claimed in claim 1, it is characterised in that the fluidized-bed coal
Gasification furnace gas distributor also includes thermal insulation layer, and the thermal insulation layer is arranged on the inwall of the gasification furnace shell, it is described fall
Conical distribution plate is arranged in the thermal insulation layer so as to form the envelope between the back taper distribution grid and the thermal insulation layer
Closed chamber, the scum pipe also wear the thermal insulation layer, and the oxidant feed gas pipe also wears the thermal insulation layer.
9. fluidized-bed coal gasification furnace gas distributor as claimed in claim 1, it is characterised in that the fluidized-bed coal
Gasification furnace gas distributor also includes wearing layer, the wearing layer be arranged on the upper surface of the back taper distribution grid and
It is described gasification furnace shell inwall on the part of the top of the back taper distribution grid, the through hole extends to described resistance to
Grind in layer.
10. fluidized-bed coal gasification furnace gas distributor as claimed in claim 1, it is characterised in that the fluidized bed coal
Charcoal gasification furnace gas distributor also includes distribution plate support and thermal insulation barriers, and the distribution plate support is installed in the gasification
On the inwall of furnace shell, the top of the back taper distribution grid is installed on the distribution plate support by the thermal insulation barriers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720307630.2U CN206783610U (en) | 2017-03-28 | 2017-03-28 | Fluidized-bed coal gasification furnace gas distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720307630.2U CN206783610U (en) | 2017-03-28 | 2017-03-28 | Fluidized-bed coal gasification furnace gas distributor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206783610U true CN206783610U (en) | 2017-12-22 |
Family
ID=60705501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720307630.2U Withdrawn - After Issue CN206783610U (en) | 2017-03-28 | 2017-03-28 | Fluidized-bed coal gasification furnace gas distributor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206783610U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106833749A (en) * | 2017-03-28 | 2017-06-13 | 上海卓旋化工科技有限公司 | Fluidized-bed coal gasification furnace gas distributor |
| CN108676583A (en) * | 2018-06-30 | 2018-10-19 | 山西晋城无烟煤矿业集团有限责任公司 | A kind of follow-on fluidized-bed gasification furnace |
-
2017
- 2017-03-28 CN CN201720307630.2U patent/CN206783610U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106833749A (en) * | 2017-03-28 | 2017-06-13 | 上海卓旋化工科技有限公司 | Fluidized-bed coal gasification furnace gas distributor |
| CN106833749B (en) * | 2017-03-28 | 2022-07-05 | 上海卓旋化工科技有限公司 | Gas distributor for fluidized bed coal gasification furnace |
| CN108676583A (en) * | 2018-06-30 | 2018-10-19 | 山西晋城无烟煤矿业集团有限责任公司 | A kind of follow-on fluidized-bed gasification furnace |
| CN108676583B (en) * | 2018-06-30 | 2024-04-05 | 山西晋城无烟煤矿业集团有限责任公司 | Improved fluidized bed gasifier |
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