CN206094050U - A air distribution system for CFB flue gas emergence equipment - Google Patents
A air distribution system for CFB flue gas emergence equipment Download PDFInfo
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- CN206094050U CN206094050U CN201620994617.4U CN201620994617U CN206094050U CN 206094050 U CN206094050 U CN 206094050U CN 201620994617 U CN201620994617 U CN 201620994617U CN 206094050 U CN206094050 U CN 206094050U
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- air
- feed system
- air feed
- wind
- burner hearth
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Abstract
The utility model discloses an air distribution system for CFB flue gas emergence equipment, including wind air feed system, overgrate air air feed system, inert gas air feed system, returning charge wind air feed system, wind air feed system respectively with fire burning furnace thorax bottom, feeder feeds through in order to provide wind one time, the layering of overgrate air air feed system communicates in order to provide the overgrate air with the dense region and the dilute -phase zone that fire the burning furnace thorax, the inert gas layering communicates in order to provide inert gas with the dense region and the dilute -phase zone that fire the burning furnace thorax, returning charge wind air feed system communicates in order to provide returning charge wind with the returning charge ware of adiabatic flue gas rotary separator bottom. The utility model discloses beneficial effect: the layering provides combustible gas in the burning furnace thorax and makes it distribute more evenly in the combustion chamber firing to avoid taking place local coking phenomenon, and make the fuel burning more abundant, improve the fuel availability, the fuel saving.
Description
Technical field
The utility model is related to a kind of blowing system, particularly a kind of blowing system that equipment occurs for CFB flue gases.
Background technology
The flue gas generation equipment of domestic operation at present is all smaller, and its capacity is general all in below 20MW.These equipment are big
Cause can be divided into chain furnace form, coal-powder boiler form, fluidized bed furnace form and bubbling pool furnace form etc..
In actual applications, these flue gases generation equipment are substantially all and have a problem that, are exactly the combustion furnace of combustion gas furnace
The bad control of bore temperature, often some temperatures at localized regions not enough, but other regional areas again temperature is too high and produce knot
Burnt phenomenon.
Accordingly, it would be desirable to take measures to be improved burner hearth, the temperature field in burner hearth is preferably controlled
System.
Utility model content
Goal of the invention of the present utility model is：For above-mentioned problem, there is provided one kind sets for CFB flue gases
Standby blowing system, can be better controlled to the temperature field in burner hearth.
The technical scheme that CFB flue gases involved by the utility model occur equipment is as follows：
There is equipment, including burning in a kind of CFB flue gases by the use of solid fuel ignition generation gas as technique medium
Burner hearth, heat-insulating rotary separator, rear vertical shaft and material returning device, the heat-insulating rotary separator upper end is by transition flue duct and combustion
The connection of burner hearth upper end is burnt, the lower end of the heat-insulating flue gas rotary separator is installed material returning device and draws the solid particulate matter isolated
The combustion chamber of burner hearth is gone back to, upper end is connected by horizontal flue with rear shaft top.The burner hearth is from top to bottom successively
It is divided into air compartment, emulsion zone, dilute-phase zone（Wherein, emulsion zone and dilute-phase zone are combustion chamber）, the material returning device draws solid particulate matter
The emulsion zone for returning burner hearth is rekindled, and the emulsion zone sidepiece arranges charging gear.The air compartment top arranges air distribution plate
And blast cap, air compartment bottom arranges air inlet and slag-drip opening.The heat-insulating rotary separator be divided into from top to bottom cone section, straight section and
Exhanst gas outlet section, the straight section sidepiece arranges the gas approach window connected with transition flue duct.Will using heat-insulating rotary separator
Unburnt fuel particle and high-temperature flue gas are separated, and can obtain the high-temperature flue gas for cleaning.The material returning device includes standpipe, material returning valve
Body and refeed line, the feed back valve body is arranged on riser bottom, and the feed back body base arranges some wind with ft connection
Cap, the refeed line is connected with feed back valve body-side, and the two junction is higher than blast cap height, using blast cap into material returning valve body
Injection high velocity air, disturbs the unburnt fuel particle collected and reaches fluidized state, and makes it uniformly, continuously and stably
Flow out from refeed line.
A kind of blowing system technical scheme for CFB flue gases generation equipment provided by the utility model is as follows：
Including First air air feed system, Secondary Air air feed system, inert gas air feed system, material returning device air feed system, institute
State First air air feed system to connect to provide First air, the Secondary Air air feed system respectively with burner hearth bottom, charging gear
System layering connects to provide Secondary Air, the inert gas layering and burner hearth with the emulsion zone and dilute-phase zone of burner hearth
Emulsion zone is connected to provide inert gas with dilute-phase zone, and the returning charge wind air feed system connects to provide returning charge wind with material returning device.
Returning charge wind is fresh cold air.
Preferably, the material returning device air feed system includes returning charge blower fan, returning charge blower fan passes through material returning device fluidized wind arm
Connect with material returning device and provide returning charge wind for it, unnecessary wind is then sent to the combustion chamber of burner hearth by overflow air channel.
Preferably, the First air air feed system includes primary air fan, the airduct of the primary air fan is divided into three
Pipe, the air compartment air intake that the point windburn arm for connecting with the emulsion zone of burner hearth respectively is connected with burner hearth bottom plenum
That what is managed and connect with charging gear blows coal wind arm.The air intake of the primary air fan passes through the air for heating for fresh natural.
First air enters combustion chamber from the air distribution plate and blast cap of air compartment, and fuel particle is blown to form suspended state, there is provided appropriate oxygen amount
Form stable high temperature suspension combustion region.
Preferably, the Secondary Air air feed system includes overfire air fan, the airduct of the overfire air fan is divided into some points
The combustion chamber Secondary Air arm that layer is connected with the emulsion zone and dilute-phase zone of burner hearth.The air intake of the overfire air fan for it is fresh enter
Wind.Secondary air separating floor height speed enters the combustion chamber top of burner hearth, plus strong disturbance and supplemental oxygen, controls by First air from stove
Tail band fully improves efficiency of combustion to the fine grain burn-off rate of fuel in furnace roof region.
Preferably, the inert gas air feed system includes emulsion zone booster fan and dilute-phase zone booster fan, it is described
The airduct of emulsion zone booster fan is the emulsion zone inert gas arm connected with the emulsion zone of burner hearth, and the dilute-phase zone increases
The airduct of pressure fan is the dilute-phase zone inert gas arm connected with the dilute-phase zone of burner hearth.From the high temperature cigarette that rear vertical shaft is drawn
Gas is after the industrial utilization of other systems, and temperature is still higher, but no longer has flammable nature, becomes high temperature inert gas
Body.Although the temperature of high temperature inert gas is higher, much lower compared with temperature in burner hearth, supplied by inert gas
Wind system introduces burner hearth, can absorb the heat in the region, reduces the temperature of burner hearth, prevents the region from local occur
Coking.
In sum, as a result of above-mentioned technical proposal, the beneficial effects of the utility model are：
Layering makes it more uniform in burning indoor distribution to providing fuel gas in burner hearth, so as to avoid generation office
Portion's coking phenomenon, and make fuel combustion more abundant, fuel availability is improved, save fuel.
Description of the drawings
Fig. 1 is schematic diagram of the present utility model.
Mark in figure：
1-1 be returning charge blower fan, 1-2 be overflow air channel, 1-3 material returning device fluidized wind arms；
2-1 is primary air fan, and 2-2 is point windburn arm, and 2-3 is air compartment winding pipe, and 2-4 is material seeding wind arm；
3-1 is emulsion zone booster fan, and 3-2 is emulsion zone inert gas arm；
4-1 is overfire air fan, and 4-2 is combustion chamber Secondary Air arm；
5-1 is dilute-phase zone booster fan, and 5-2 is dilute-phase zone inert gas arm.
Specific embodiment
Below in conjunction with the accompanying drawings, the utility model is described in detail.
Embodiment：
As shown in figure 1, a kind of blowing system that equipment occurs for CFB flue gases, including First air air feed system, Secondary Air
Air feed system, inert gas air feed system, returning charge wind air feed system, the First air air feed system respectively with burner hearth bottom
, to provide First air, the Secondary Air air feed system is layered emulsion zone and dilute-phase zone with burner hearth for portion, charging gear connection
To provide Secondary Air, the inert gas layering connects to provide indifferent gas with the emulsion zone and dilute-phase zone of burner hearth for connection
Body, the returning charge wind air feed system connects to provide returning charge wind with material returning device.
The material returning device air feed system includes that returning charge blower fan 1-1, returning charge blower fan 1-1 pass through material returning device fluidized wind arm 1-3
Connect with material returning device and provide returning charge wind for it, unnecessary wind is then sent to the combustion chamber of burner hearth by overflow air channel 1-2.
The First air air feed system includes primary air fan 2-1, and the airduct of the primary air fan 2-1 is divided into three arms,
The air compartment air intake that the point windburn arm 2-2 for connecting with the emulsion zone of burner hearth respectively is connected with burner hearth bottom plenum
The pipe 2-3 and material seeding wind arm 2-4 connected with charging gear.
The Secondary Air air feed system includes overfire air fan 4-1, the airduct of the overfire air fan 4-1 be divided into some layerings with
The combustion chamber Secondary Air arm 4-2 that the emulsion zone of burner hearth is connected with dilute-phase zone.
The inert gas air feed system includes emulsion zone booster fan 3-1 and dilute-phase zone booster fan 5-1, the close phase
The airduct of area booster fan 3-1 is the emulsion zone inert gas arm 3-2 connected with the emulsion zone of burner hearth, the dilute-phase zone
The airduct of booster fan 5-1 is the dilute-phase zone inert gas arm 5-2 connected with the dilute-phase zone of burner hearth.
Claims (5)
1. it is a kind of for CFB flue gases occur equipment blowing system, it is characterised in that：Including First air air feed system, Secondary Air
Air feed system, inert gas air feed system, material returning device air feed system, the First air air feed system respectively with burner hearth bottom
, to provide First air, the Secondary Air air feed system is layered emulsion zone and dilute-phase zone with burner hearth for portion, charging gear connection
To provide Secondary Air, the inert gas layering connects to provide indifferent gas with the emulsion zone and dilute-phase zone of burner hearth for connection
Body, the returning charge wind air feed system connects to provide returning charge wind with material returning device.
2. it is according to claim 1 it is a kind of for CFB flue gases occur equipment blowing system, it is characterised in that：It is described to return
Glassware air feed system includes returning charge blower fan（1-1）, returning charge blower fan（1-1）By material returning device fluidized wind arm（1-3）With material returning device
Connect and provide returning charge wind for it, unnecessary wind then passes through overflow air channel（1-2）It is sent to the combustion chamber of burner hearth.
3. it is according to claim 1 it is a kind of for CFB flue gases occur equipment blowing system, it is characterised in that：Described one
Secondary wind air feed system includes primary air fan（2-1）, the primary air fan（2-1）Airduct be divided into three arms, respectively with burning
The point windburn arm of the emulsion zone connection of burner hearth（2-2）The air compartment winding pipe connected with burner hearth bottom plenum（2-3）With
The material seeding wind arm connected with charging gear（2-4）.
4. it is according to claim 1 it is a kind of for CFB flue gases occur equipment blowing system, it is characterised in that：Described two
Secondary wind air feed system includes overfire air fan（4-1）, the overfire air fan（4-1）Airduct be divided into some layerings with burner hearth
The combustion chamber Secondary Air arm that emulsion zone is connected with dilute-phase zone（4-2）.
5. it is according to claim 1 it is a kind of for CFB flue gases occur equipment blowing system, it is characterised in that：It is described lazy
Property gas air feed system include emulsion zone booster fan（3-1）With dilute-phase zone booster fan（5-1）, the emulsion zone booster fan
（3-1）Airduct be the emulsion zone inert gas arm connected with the emulsion zone of burner hearth（3-2）, the dilute-phase zone supercharging wind
Machine（5-1）Airduct be the dilute-phase zone inert gas arm connected with the dilute-phase zone of burner hearth（5-2）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620994617.4U CN206094050U (en) | 2016-08-31 | 2016-08-31 | A air distribution system for CFB flue gas emergence equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620994617.4U CN206094050U (en) | 2016-08-31 | 2016-08-31 | A air distribution system for CFB flue gas emergence equipment |
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| Publication Number | Publication Date |
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| CN206094050U true CN206094050U (en) | 2017-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620994617.4U Active CN206094050U (en) | 2016-08-31 | 2016-08-31 | A air distribution system for CFB flue gas emergence equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106196032A (en) * | 2016-08-31 | 2016-12-07 | 自贡华西能源工业有限公司 | A kind of blowing system for CFB flue gas generation equipment |
-
2016
- 2016-08-31 CN CN201620994617.4U patent/CN206094050U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106196032A (en) * | 2016-08-31 | 2016-12-07 | 自贡华西能源工业有限公司 | A kind of blowing system for CFB flue gas generation equipment |
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