CN206771331U - It is a kind of to be used for device of the CFB boiler material returning valve both sides to coal - Google Patents
It is a kind of to be used for device of the CFB boiler material returning valve both sides to coal Download PDFInfo
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- CN206771331U CN206771331U CN201720665422.XU CN201720665422U CN206771331U CN 206771331 U CN206771331 U CN 206771331U CN 201720665422 U CN201720665422 U CN 201720665422U CN 206771331 U CN206771331 U CN 206771331U
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- material returning
- returning valve
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Abstract
It the utility model is related to a kind of fluidized bed combustion equipment, it is used for device of the CFB boiler material returning valve both sides to coal more particularly to a kind of, including boiler furnace, coal bunker, feeder (1), material returning valve (2), coal spout (3), it is characterized in that, material returning valve (2) and coal bunker are arranged symmetrically in boiler furnace both sides, coal bunker is connected by feeder (1) with coal spout (3), and the coal conveyed by coal spout (3) enters boiler furnace by return pipeline.
Description
Technical field
It the utility model is related to a kind of fluidized bed combustion equipment, and in particular to one kind is given for CFB boiler material returning valve both sides
The device of coal.
Background technology
The fuel feeder of fluidized bed combustion equipment, there is I and II to give coal formula, or as CN201310076720.1 is disclosed
A kind of CFB boiler double material coal supply system, although coal is discharged into coal bunkers, solution from two discharging openings by gravity flow and turning arm thrust
The problem of coal of having determined viscosity is big, but could not be solved in running to adjusting quantity delivered, solution combustion uniformity, reliability aspect at any time
Certainly.
For the CFB boiler using burner hearth both sides arrangement cyclone separator and material returning valve, generally use material returning valve is to coal side
Formula, usual coal bunker apart from material returning valve to coal point farther out, coal supply system needs to use two level coal-feeding mode, i.e., coal first pass through one-level to
Coal machine is transported to two level feeder, is being transported to material returning valve coal spout by two level feeder, each two level feeder needs correspondingly
The coal spout of more than 2 is set.Using this coal-feeding mode, have a disadvantage that：
1) coal bunker is distant apart from coal spout, longer to seam, and the response time is longer when making to adjust to coal, is unfavorable for pot
The quick adjustment of stove operation.
2) each two level feeder need to be correspondingly arranged multiple coal spouts, and between each coal spout coal-supplying amount it is equal
Even property is difficult to ensure that, and does not also have regulating measure in boiler running process so that the coal-supplying amount of each coal spout is not during operation
Uniformly, and its regularity is also changing with load, and running does not have regulating measure, influences the combustion even in boiler combustion room
Property so that it can produce such as the problems such as boiler bed temperature deviation is big, efficiency of combustion is low, pollutant emission is high, runing adjustment is difficult.
3) coal arrangement is given using two level, coal supply system is complicated, gives coal distance so that coal supply system fault rate is high,
And the two level feeder quantity typically only 2 that boiler is unilateral, quantity causes the poor reliability of coal supply system less.
Utility model content
In order to overcome above-mentioned technological deficiency, the purpose of this utility model is that providing one kind is used for CFB boiler material returning valve two
Device of the side to coal, with solve runing adjustment is poor, adjusted to coal when the response time it is longer, give the coal time grow, boiler furnace
It is interior burning it is uneven, to coal fault rate it is high the problem of.
Scheme of the present utility model is：It is a kind of to be used for device of the CFB boiler material returning valve both sides to coal, including boiler combustion
Room, coal bunker, feeder, material returning valve, coal spout, material returning valve and coal bunker are arranged symmetrically in boiler furnace both sides, and feeder is by coal
Storehouse is connected with coal spout, and the coal conveyed by coal spout enters boiler furnace by return pipeline.
Further, the return pipeline is material returning valve return pipeline and/or external bed return pipeline；
Further, two or three material returning valves are arranged in every side of the boiler furnace；
Further, a feeder is corresponding with a coal spout and a material returning valve return pipeline, and feeder respectively will
Coal bunker is connected with coal spout, and the coal conveyed by coal spout enters boiler furnace by material returning valve return pipeline.
Further, a feeder is corresponding with a coal spout and a material returning valve return pipeline, a feeder pair
Should there are a coal spout and an external bed return pipeline, coal bunker is connected by each feeder with respective coal spout respectively, wherein
Coal by a coal spout conveying enters boiler furnace by material returning valve return pipeline, by the conveying of another coal spout
Coal enters boiler furnace by external bed return pipeline.
The beneficial effects of the utility model：
First uses this new coal-feeding mode, and the coal-supplying amount of each feeder realizes independent control and regulation, can be real
Now to the independent control of each coal-supplying amount to coal point, it is ensured that the coal-supplying amount of each coal spout is uniform；
Second is arranged in coal bunker the both sides of boiler, makes coal bunker nearer apart from material returning valve coal spout, shortens coal bunker and falls
The distance between coal pipe, it can shorten and give coal distance, reduce and give coal time of delivery, the runing adjustment being easy and fast to, and can adjust at any time
Section, the control characteristic of coal supply system operation is improved, improve the combustion uniformity of boiler, having reduces boiler bed temperature deviation
Greatly, improve efficiency of combustion, advantageously reduce the advantages that pollutant emission；
3rd improves the operational reliability of boiler, reduces accident rate；
4th feeder quantity is more, and each feeder can be standby each other, adds the reliability of system.And compared to two level to coal
Mode, coal supply system is simple, fault rate is low.
Brief description of the drawings
Fig. 1 is that the utility model both sides give the device of coal the first structural representation；
Fig. 2 is second of the structural representation of device of the utility model both sides to coal；
Fig. 3 is that the utility model both sides give the device of coal the third structural representation；
Fig. 4 is the 4th kind of structural representation of device of the utility model both sides to coal；
Reference：1- feeders, 2- material returning valves, 3- coal spouts, 4- material returning valve return pipelines, 5- external bed feed pipes
Road, 6- external beds, 7- external bed return pipelines.
Embodiment
For using CFB boiler of the material returning valve to coal, arranging coal bunker using in boiler both sides, coal enters feeder from coal bunker
1, it is transported to by feeder 1 at the coal spout 3 of material returning valve return pipeline, the coal spout 3 through material returning valve return pipeline enters back
Expect valve 2, enter through material returning valve return pipeline 4 in boiler furnace and participate in burning.
For using the CFB boiler with external bed, during using material returning valve to coal, coal bunker, coal are arranged using in boiler both sides
Enter feeder from coal bunker, feeder is respectively two-way.Enter the coal spout of material returning valve return pipeline, warp by feeder all the way
Material returning valve return pipeline, which enters, participates in burning in boiler furnace.Another way enters falling for external bed return pipeline by feeder
Coal pipe, enter through external bed return pipeline in boiler furnace and participate in burning.
Boiler material returning valve and coal bunker both sides are arranged symmetrically, and two or three material returning valves can be arranged per side.
Specific work process of the present utility model is specifically described below in conjunction with the accompanying drawings：
Embodiment 1
As can be seen from Figure 1 a feeder 1 is corresponding with a coal spout 3 and a material returning valve return pipeline 4, to coal
Coal bunker is connected by machine 1 with coal spout 3 respectively, and the coal conveyed by coal spout 3 enters boiler combustion by material returning valve return pipeline
Room.It is the situation for having two sets of said apparatus corresponding to Fig. 1 is specific, the coal conveyed by coal spout 3 passes through respective material returning valve feed back
Pipeline enters boiler furnace.Wherein material returning valve 2 and coal bunker is arranged symmetrically in boiler furnace both sides.
Embodiment 2
As can be seen from Figure 2 a feeder 1 is corresponding with a coal spout 3 and a material returning valve return pipeline 4, one
Feeder 1 is corresponding with a coal spout 3 and an external bed return pipeline 7, and each feeder 1 is respectively by coal bunker and each bumy coal
Pipe 3 is connected, wherein the coal conveyed by a coal spout 3 enters boiler furnace by material returning valve return pipeline 4, process is another
The coal that individual coal spout 3 conveys enters boiler furnace by external bed return pipeline 7.Wherein material returning valve 2 and coal bunker fire in boiler
Room both sides are burnt to be arranged symmetrically.
Embodiment 3
The difference of embodiment 3 and embodiment 1 is：Wherein material returning valve 2 and coal bunker is arranged symmetrically in boiler furnace both sides,
Three material returning valves are arranged per side.Other features are same as Example 1, embodiment 3 from Fig. 3 it can also be seen that.
Embodiment 4
The difference of embodiment 4 and embodiment 2 is：Wherein material returning valve 2 and coal bunker is arranged symmetrically in boiler furnace both sides,
Three material returning valves are arranged per side.Other features are same as Example 2, embodiment 4 from Fig. 4 it can also be seen that.
Preferred embodiment of the present utility model is the foregoing is only, is not limited to the utility model, for this
For the technical staff in field, the utility model can have various knowable changes and change.It is all in principle of the present utility model
Within spirit, made any equivalent substitution, modification, improvement etc., should be included in the scope of protection of the utility model it
It is interior.
Claims (5)
1. a kind of be used for device of the CFB boiler material returning valve both sides to coal, including boiler furnace, coal bunker, feeder (1), feed back
Valve (2), coal spout (3), it is characterised in that material returning valve (2) and coal bunker are arranged symmetrically in boiler furnace both sides, feeder (1)
Coal bunker is connected with coal spout (3), the coal conveyed by coal spout (3) enters boiler furnace by return pipeline.
2. a kind of it is used for device of the CFB boiler material returning valve both sides to coal according to claim 1, it is characterised in that：It is described
Return pipeline is material returning valve return pipeline (4) and/or external bed return pipeline (7).
3. a kind of it is used for device of the CFB boiler material returning valve both sides to coal according to claim 1, it is characterised in that：It is described
Two or three material returning valves are arranged in every side of boiler furnace.
4. a kind of according to claim 1 or 2 or 3 is used for device of the CFB boiler material returning valve both sides to coal, its feature exists
In：One feeder (1) is corresponding with a coal spout (3) and a material returning valve return pipeline (4), and feeder (1) is respectively by coal
Storehouse is connected with coal spout (3), and the coal conveyed by coal spout (3) enters boiler furnace by material returning valve return pipeline.
5. a kind of according to claim 1 or 2 or 3 is used for device of the CFB boiler material returning valve both sides to coal, its feature exists
In：One feeder (1) is corresponding with a coal spout (3) and a material returning valve return pipeline (4), and a feeder (1) is corresponding
There are a coal spout (3) and an external bed return pipeline (7), each feeder (1) is respectively by coal bunker and respective coal spout (3)
It is connected, wherein the coal by coal spout (3) conveying enters boiler furnace by material returning valve return pipeline (4), by another
The coal of one coal spout (3) conveying enters boiler furnace by external bed return pipeline (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720665422.XU CN206771331U (en) | 2017-06-08 | 2017-06-08 | It is a kind of to be used for device of the CFB boiler material returning valve both sides to coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720665422.XU CN206771331U (en) | 2017-06-08 | 2017-06-08 | It is a kind of to be used for device of the CFB boiler material returning valve both sides to coal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206771331U true CN206771331U (en) | 2017-12-19 |
Family
ID=60637683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720665422.XU Active CN206771331U (en) | 2017-06-08 | 2017-06-08 | It is a kind of to be used for device of the CFB boiler material returning valve both sides to coal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206771331U (en) |
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2017
- 2017-06-08 CN CN201720665422.XU patent/CN206771331U/en active Active
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