CN206989187U - A kind of coal supply system - Google Patents
A kind of coal supply system Download PDFInfo
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- CN206989187U CN206989187U CN201720621210.1U CN201720621210U CN206989187U CN 206989187 U CN206989187 U CN 206989187U CN 201720621210 U CN201720621210 U CN 201720621210U CN 206989187 U CN206989187 U CN 206989187U
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Abstract
The utility model discloses a kind of coal supply system, belongs to fluidized-bed gasification furnace field.It includes buffering coal bunker, screw-type coal distributor, coal feeding pipe and the burner hearth being sequentially connected, and buffering coal bunker is coaxially arranged perpendicular to described screw-type coal distributor, screw-type coal distributor and coal feeding pipe level.Not possessing for the coal supply system of prior art prevents the problem of softening at coal gas of high temperature coal feed point causes to increase into coal resistance and coal supply system alters the ability of fire, it forms material envelope and the anti-channeling of coal gas in gasification furnace is suppressed during to coal due to buffering the vertical material position section of coal bunker and the horizontal material position section of screw-type coal distributor, reduces anti-channeling gas temperature.
Description
Technical field
It the utility model is related to fluidized-bed gasification furnace field, more particularly to a kind of coal supply system.
Background technology
Fluidized-bed gasification furnace is pressure-fired system, coking of the coal gas of high temperature to coal at coal feed point in easy producer during to coal
Cause, into the increase of coal resistance, to make coal handling plant stop jumping, except this will also prevent in stove coal gas anti-channeling to cause to coal supply system to alter fire.It is existing
With the presence of fluidized-bed combustion boiler coal supply system coal gas anti-channeling problem, coal supply system does not possess the softening prevented at coal gas of high temperature coal feed point
Cause into coal resistance increase and coal supply system alter fire ability, be not suitable for fluidized-bed gasification furnace give coal, therefore invent fluidize
Bed gasification furnace coal supply system focuses on solution problem above.
Chinese invention patent, publication number：102607021A, publication date：On July 25th, 2012, disclose coal feeder, to coal
System and CFBB, the coal feeder include bellows (1), the first coal chute (2) and the second coal chute (3), bellows ring
Arranged around the first coal chute, the both ends of bellows are connected with the first coal chute and the second coal chute respectively, and air intake is provided with bellows
Mouth (4) and air outlet (5), air outlet communicate with the second coal chute, wherein, the part (6) to connect with air outlet of bellows is formed
For taper type, the cross-sectional area of the taper type part tapers into from the direction away from air outlet to the direction close to air outlet.
In addition, the invention also discloses the coal supply system and recirculating fluidized bed pot for CFBB including above-mentioned coal feeder
Stove.According to coal feeder provided by the invention, the tapered jetting type air channel of taper can be formed by taper type part, so that giving coal
System is run under negative pressure state, effectively prevents that heat smoke recoils into coal supply system along returning charge leg in burner hearth.Its weak point
It is：Taper type part is long easily to be deformed or damage by high temperature and frictional influence, however it remains the problem of flue gas anti-channeling.
Utility model content
1. utility model technical problems to be solved
Not possessing for the coal supply system of prior art prevents the softening at coal gas of high temperature coal feed point from causing to increase into coal resistance
Add the problem of altering the ability of fire with coal supply system, the utility model provides a kind of coal supply system.It can reduce anti-channeling coal gas
Temperature simultaneously suppresses anti-channeling.
2. technical scheme
To solve the above problems, technical scheme provided by the utility model is：
A kind of coal supply system, including buffering coal bunker, screw-type coal distributor, coal feeding pipe and the burner hearth being sequentially connected, buffer coal bunker
Perpendicular to described screw-type coal distributor, screw-type coal distributor and coal feeding pipe level are coaxially arranged.
Coal dust enters to be entered in burner hearth by buffering coal bunker, screw-type coal distributor and coal feeding pipe successively, during to coal
Due to buffer coal bunker vertical material position section and screw-type coal distributor horizontal material position section formed material envelope in gasification furnace coal gas it is anti-
Alter and suppressed.
Preferably, screw-type coal distributor is cantilever spiral structure, coaxially arranged with coal feeding pipe level.
The cantilever spiral structure level of screw-type coal distributor is arranged to form horizontal material position section, and then forms material envelope in gasification furnace
The anti-channeling of coal gas is suppressed.
Preferably, shearing device is provided between coal feeding pipe and burner hearth.
In case of emergency, shearing device separates the coal supply system of front end with burner hearth, it is ensured that safe operation.
Preferably, lateral displacement compensator is provided between screw-type coal distributor and coal feeding pipe.
The compensating action of lateral displacement compensator in the horizontal direction, horizontal material position section is formed longer material and seal to gasification furnace
The anti-channeling of interior coal gas is suppressed.
Preferably, lateral displacement compensator is compensation expansion joint, and described compensation expansion joint is type metal expansion joint.
Preferably, shearing device is gate valve, ball valve or plug valve.
Preferably, shearing device is provided with protection channel of nitrogen, and protection channel of nitrogen connects with nitrogen protection device.
Opened to nitrogen protection device during coal, make screw-type coal distributor with there is the normal temperature of certain pressure in shearing device
Nitrogen separates front end coal supply system and rear end burner hearth.
Preferably, the rotating speed of screw-type coal distributor by Frequency Converter Control and is provided with temperature element, nitrogen protection device and spiral
Feeder connects.
Opened to nitrogen protection device during coal, make screw-type coal distributor with there is the normal temperature of certain pressure in shearing device
Nitrogen separates front end coal supply system and rear end burner hearth, while Frequency Converter Control screw-type coal distributor stops to coal.
Preferably, buffering coal bunker is provided with heat tracing and lagging facility.
Preferably, coal feeding pipe is provided with coal spread wind device.
The present utility model is a kind of simple and can effectively improve the device of coal supply system reliability and security, structure
Simply, cost is low, service life is long, easy to maintenance, easily realizes coal supply system long period safe and stable operation.
Fluidized-bed gasification furnace coal supply system by buffering coal bunker, screw-type coal distributor, compensation expansion joint, coal feeding pipe, shearing device,
Nitrogen protection device forms.Screw-type coal distributor is cantilever spiral structure, with lateral displacement compensator, shearing device, coal feeding pipe water
It is flat coaxially arranged.Coal charge is buffered to arrange up and down with screw-type coal distributor.Lateral displacement compensator, compensator are connected after screw-type coal distributor
After connect shearing device, coal feeding pipe is connected after shearing device, coal feeding pipe is connected with burner hearth.Set in screw-type coal distributor and shearing device
Put nitrogen protection passage.
The coal in coal bunker is buffered during to coal because Action of Gravity Field enters screw-type coal distributor, then passes through the horizontal thrust of spiral
Coal is fed forward to coal feeding pipe, last coal enters gasification furnace.Opened to nitrogen protection device during coal, make screw-type coal distributor
With there is the nitrogen at room of certain pressure to separate front end coal supply system and rear end burner hearth in shearing device.During to coal by
Vertical material position section, the horizontal material position section of screw-type coal distributor in buffering coal bunker form material envelope and the anti-channeling of coal gas in gasification furnace are carried out
Suppress, the protection nitrogen on screw-type coal distributor and shearing device can reduce anti-channeling gas temperature and suppress anti-channeling.
3. beneficial effect
Using technical scheme provided by the utility model, compared with prior art, have the advantages that：
(1) a kind of coal supply system of the present utility model, the cantilever spiral structure level of screw-type coal distributor are arranged to form level
Material position section, and then form material envelope and the anti-channeling of coal gas in gasification furnace is suppressed；
(2) a kind of coal supply system of the present utility model, in case of emergency, shearing device is by the coal supply system and stove of front end
Thorax separates, it is ensured that safe operation；
(3) a kind of coal supply system of the present utility model, the compensating action of lateral displacement compensator in the horizontal direction, makes level
Material position section forms longer material envelope and the anti-channeling of coal gas in gasification furnace is suppressed；
(4) a kind of coal supply system of the present utility model, buffering coal bunker are provided with heat tracing and lagging facility, ensure that production process
Security；
(5) structural principle of the present utility model is simple, low manufacture cost, is easily achieved.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Label declaration in schematic diagram：
1st, coal bunker is buffered；2nd, screw-type coal distributor；3rd, lateral displacement compensator；4th, shearing device；5th, coal feeding pipe；6th, burner hearth；
7th, nitrogen protection device.
Embodiment
To further appreciate that content of the present utility model, the utility model is described in detail with reference to drawings and Examples.
Embodiment 1
As shown in figure 1, a kind of coal supply system of the present embodiment, including be sequentially connected buffering coal bunker 1, screw-type coal distributor 2,
Coal feeding pipe 5 and burner hearth 6, it is characterised in that buffering coal bunker 1 is perpendicular to described screw-type coal distributor 2, and screw-type coal distributor 2 is with entering coal
Pipe 5 is horizontal coaxially arranged.
Coal dust enters to be entered in burner hearth 6 by buffering coal bunker 1, screw-type coal distributor 2 and coal feeding pipe 5 successively, is giving coal mistake
Material envelope is formed to coal in gasification furnace due to buffering the vertical material position section of coal bunker 1 and the horizontal material position section of screw-type coal distributor 2 in journey
The anti-channeling of gas is suppressed.
Embodiment 2
As shown in figure 1, a kind of coal supply system of the present embodiment, on the basis of embodiment 1, screw-type coal distributor 2 is cantilever
Helical structure, it is horizontal coaxially arranged with coal feeding pipe 5.
The cantilever spiral structure level of screw-type coal distributor 2 is arranged to form horizontal material position section, and then forms material envelope to gasification furnace
The anti-channeling of interior coal gas is suppressed.
Embodiment 3
As shown in figure 1, a kind of coal supply system of the present embodiment, on the basis of embodiment 1 or 2, coal feeding pipe 5 and burner hearth 6
Between be provided with shearing device 4.
In case of emergency, shearing device 4 separates the coal supply system of front end and burner hearth 6, it is ensured that safe operation.
Embodiment 4
As shown in figure 1, a kind of coal supply system of the present embodiment, on the basis of embodiment 1 or 2 or 3, screw-type coal distributor 2
Lateral displacement compensator 3 is provided between coal feeding pipe 5.
The compensating action of lateral displacement compensator 3 in the horizontal direction, horizontal material position section is set to form longer material envelope to gasification
The anti-channeling of coal gas is suppressed in stove.
Embodiment 5
As shown in figure 1, a kind of coal supply system of the present embodiment, on the basis of embodiment 1-4, lateral displacement compensator 3
To compensate expansion joint, compensation expansion joint is type metal expansion joint.
Embodiment 6
As shown in figure 1, a kind of coal supply system of the present embodiment, on the basis of embodiment 1-5, shearing device 4 be gate valve,
Ball valve or plug valve.
Embodiment 7
As shown in figure 1, a kind of coal supply system of the present embodiment, on the basis of embodiment 1-6, shearing device 4, which is provided with, to be protected
Channel of nitrogen is protected, protection channel of nitrogen connects with nitrogen protection device 7.
Opened to nitrogen protection device during coal, make screw-type coal distributor with there is the normal temperature of certain pressure in shearing device
Nitrogen separates front end coal supply system and rear end burner hearth.
Embodiment 8
As shown in figure 1, a kind of coal supply system of the present embodiment, on the basis of embodiment 1-7, screw-type coal distributor 2 turns
Speed is by Frequency Converter Control and is provided with temperature element, and nitrogen protection device 7 is connected with screw-type coal distributor 2.
Opened to nitrogen protection device during coal, make screw-type coal distributor with there is the normal temperature of certain pressure in shearing device
Nitrogen separates front end coal supply system and rear end burner hearth, while Frequency Converter Control screw-type coal distributor 2 stops to coal.
Embodiment 9
As shown in figure 1, a kind of coal supply system of the present embodiment, on the basis of embodiment 1-8, buffering coal bunker 1 is provided with companion
Heat and lagging facility.
Embodiment 10
As shown in figure 1, a kind of coal supply system of the present embodiment, on the basis of embodiment 1-9, coal feeding pipe 5 is provided with and broadcasts coal
Wind apparatus.
Schematically the utility model and embodiments thereof are described above, this describes no restricted, accompanying drawing
Shown in be also one of embodiment of the present utility model, actual structure is not limited thereto.So if this area
Those of ordinary skill enlightened by it, do not depart from the utility model create objective in the case of, without creativeness design
The frame mode similar to the technical scheme and embodiment, the scope of protection of the utility model all should be belonged to.
Claims (10)
1. a kind of coal supply system, including buffering coal bunker (1), screw-type coal distributor (2), coal feeding pipe (5) and the burner hearth being sequentially connected
(6), it is characterised in that buffering coal bunker (1) is perpendicular to described screw-type coal distributor (2), screw-type coal distributor (2) and coal feeding pipe (5)
It is horizontal coaxially arranged.
2. a kind of coal supply system according to claim 1, it is characterised in that described screw-type coal distributor (2) is cantilever spiral shell
Structure is revolved, it is horizontal coaxially arranged with coal feeding pipe (5).
3. a kind of coal supply system according to claim 1, it is characterised in that between described coal feeding pipe (5) and burner hearth (6)
Provided with shearing device (4).
4. a kind of coal supply system according to claim 1, it is characterised in that described screw-type coal distributor (2) and coal feeding pipe
(5) lateral displacement compensator (3) is provided between.
5. a kind of coal supply system according to claim 4, it is characterised in that described lateral displacement compensator (3) is benefit
Expansion joint is repaid, described compensation expansion joint is type metal expansion joint.
6. a kind of coal supply system according to claim 1, it is characterised in that shearing device (4) is gate valve, ball valve or cock
Valve.
A kind of 7. coal supply system according to claim 1, it is characterised in that shearing device (4) is provided with protection channel of nitrogen,
Protection channel of nitrogen connects with nitrogen protection device (7).
8. a kind of coal supply system according to claim 1, it is characterised in that the rotating speed of screw-type coal distributor (2) is by frequency converter
Control and be provided with temperature element, nitrogen protection device (7) is connected with screw-type coal distributor (2).
9. a kind of coal supply system according to claim 1, it is characterised in that buffering coal bunker (1) is set provided with heat tracing with insulation
Apply.
10. according to a kind of coal supply system described in claim 1-5 any one, it is characterised in that coal feeding pipe (5) is provided with and broadcasts coal
Wind apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720621210.1U CN206989187U (en) | 2017-05-31 | 2017-05-31 | A kind of coal supply system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720621210.1U CN206989187U (en) | 2017-05-31 | 2017-05-31 | A kind of coal supply system |
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| Publication Number | Publication Date |
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| CN206989187U true CN206989187U (en) | 2018-02-09 |
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ID=61390881
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| CN201720621210.1U Active CN206989187U (en) | 2017-05-31 | 2017-05-31 | A kind of coal supply system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109609196A (en) * | 2018-11-12 | 2019-04-12 | 北京国电龙源环保工程有限公司 | A kind of double charging gears of Circulating Fluidized Bed Gasifier For Biomass block-resistant sealing |
-
2017
- 2017-05-31 CN CN201720621210.1U patent/CN206989187U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109609196A (en) * | 2018-11-12 | 2019-04-12 | 北京国电龙源环保工程有限公司 | A kind of double charging gears of Circulating Fluidized Bed Gasifier For Biomass block-resistant sealing |
| CN109609196B (en) * | 2018-11-12 | 2024-05-28 | 国能龙源环保有限公司 | Anti-blocking sealing double-feeding device of biomass circulating fluidized bed gasifier |
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