CN108224455A - A kind of deashing device of low-level (stack-gas) economizer - Google Patents
A kind of deashing device of low-level (stack-gas) economizer Download PDFInfo
- Publication number
- CN108224455A CN108224455A CN201810178452.7A CN201810178452A CN108224455A CN 108224455 A CN108224455 A CN 108224455A CN 201810178452 A CN201810178452 A CN 201810178452A CN 108224455 A CN108224455 A CN 108224455A
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- CN
- China
- Prior art keywords
- postposition
- preposition
- deashing
- gas
- driven valve
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
- F23J3/02—Cleaning furnace tubes; Cleaning flues or chimneys
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2700/00—Ash removal, handling and treatment means; Ash and slag handling in pulverulent fuel furnaces; Ash removal means for incinerators
- F23J2700/001—Ash removal, handling and treatment means
Abstract
The invention discloses a kind of deashing devices of low-level (stack-gas) economizer, set on low-level (stack-gas) economizer inlet flue duct and exhaust pass bottom, including preamble bit material meter, rear set material meter, preposition electronic rotation flashboard, postposition electronic rotation flashboard, preposition deashing motor-driven valve, postposition deashing motor-driven valve, preposition soot blowing motor-driven valve, the postposition soot blowing motor-driven valve being connect with control system, preposition ash bucket, postposition ash bucket, preposition blowing pipe, postposition blowing pipe, compressed air hose and deashing pipe are further included.The configuration of the present invention is simple, it is easy to operate, low-level (stack-gas) economizer both sides and internal dust stratification can be removed in time, eliminate the influence of dust stratification heat exchanging device heat transfer effect, reduce flue gas resistance, reduce air-introduced machine power consumption.
Description
Technical field
The present invention relates to industrial flue gas cleaning and heat recovery technology field, more particularly to a kind of the clear of low-level (stack-gas) economizer
Apparatus for ash.
Background technology
The waste heat recovery of flue gas that low-level (stack-gas) economizer refers generally to Industrial Boiler or station boiler or waste heat boiler tail portion comes out
Equipment.The flue-gas temperature of general station boiler discharge is all higher, in order to utilize heat in flue gas to greatest extent, improves energy
The utilization rate in source improves the dust removal efficiency of deduster, can install low-level (stack-gas) economizer additional before electric precipitator, flue gas is with condensation water in low temperature
Countercurrent flow in economizer, heat medium water are heated up, and flue-gas temperature is reduced to acid dew-point temperature.Low-level (stack-gas) economizer not only can be with
Mist heat recovering, simultaneously as flue-gas temperature reduces, enters for heat-setting water or the First air of heating air preheater
The flue gas volume flow of electric precipitator is reduced, and dust concentration increases, and specific resistance reduces, and is promoted the efficiency of dust collection of electric precipitator and is subtracted
Small electric precipitator equipment investment；
But according to actual production using finding, in the inlet flue duct of low-level (stack-gas) economizer, since low-level (stack-gas) economizer has resistance to flue gas
Power, a part of ash can fall on import bottom, simultaneously as low-level (stack-gas) economizer causes the flowing velocity of flue gas to reduce, be saved in low temperature
The exhaust pass mouth bottom of coal device also has part ash landing deposition, leads to the inlet and outlet of low-level (stack-gas) economizer with the accumulation of time
Flue causes cigarette speed smaller by dust stratification Partial Blocking, so as to cause the reduction for entering the exhaust gas volumn of low-level (stack-gas) economizer, so as to cause
Flue and a large amount of dust stratifications of low-level (stack-gas) economizer, finally seriously affect low-level (stack-gas) economizer heat exchange property, also influence follow-up electric precipitator
Efficiency of dust collection.Fouling phenomenon caused by a large amount of installations of low-level (stack-gas) economizer is very serious, the power of the air-introduced machine of flue gas conveying by
To larger impact, so soot cleaning system becomes essential device, low-level (stack-gas) economizer inlet and outlet stack base dust stratification clean into
For a great problem.
Invention content
In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a kind of deashing devices of low-level (stack-gas) economizer.
The technical solution adopted by the present invention is：A kind of deashing device of low-level (stack-gas) economizer, the import including low-level (stack-gas) economizer
Flue and exhaust pass further include the deashing device set on low-level (stack-gas) economizer inlet flue duct and exhaust pass bottom；
The deashing device include preamble bit material meter, rear set material meter, preposition electronic rotation flashboard, postposition electronic rotation flashboard,
Preposition ash bucket, preposition deashing motor-driven valve, postposition deashing motor-driven valve, preposition blowing pipe, postposition blowing pipe, preposition is blown postposition ash bucket
Grey motor-driven valve, postposition soot blowing motor-driven valve, compressed air hose, deashing pipe and control system；
The preamble bit material meter and rear set material meter are set respectively close to the front and rear of low-level (stack-gas) economizer, the inlet flue duct
Preposition electronic rotation flashboard and postposition electronic rotation flashboard, the preposition electronic rotation flashboard are respectively equipped with exhaust pass bottom
Preposition ash bucket and postposition ash bucket, the preposition ash bucket and postposition hopper bottom are connected separately with postposition electronic rotation flashboard lower section
It is connected respectively with deashing pipe, preposition deashing motor-driven valve is respectively equipped on the connecting pipe of the deashing pipe and postposition deashing is electronic
Valve；
The compressed air hose is inserted into after preposition ash bucket and postposition ash bucket respectively respectively with extending vertically into deashing pipe connecting pipe
Preposition blowing pipe is connected with postposition blowing pipe, and the compressed air hose is equipped with preposition soot blowing motor-driven valve and postposition soot blowing is electronic
Valve；The section that extends vertically into of the preposition blowing pipe and postposition blowing pipe is equipped with several soot blowing holes；
The preamble bit material meter, rear set material meter, preposition electronic rotation flashboard, postposition electronic rotation flashboard, preposition deashing are electronic
Valve, postposition deashing motor-driven valve, preposition soot blowing motor-driven valve, postposition soot blowing motor-driven valve are electrically connected with control system.
Further, the flashboard length of the preposition electronic rotation flashboard and postposition electronic rotation flashboard and inlet flue duct and
The bottom width of exhaust pass is equal.
Further, the preposition electronic rotation flashboard and postposition electronic rotation ram position distance low-temperature economizer are
100mm。
Further, preamble bit material meter and rear set material meter it is each there are one, be respectively arranged on inlet flue duct and outlet cigarette
The center in road.
Further, the preamble bit expects there are three meter and rear set material meters, to be respectively arranged on inlet flue duct and exhaust pass
Both sides and center.
Further, the compressed air pressure that the compressed air hose provides is 1MP.
Further, control system is set in the 3s after preposition electronic rotation flashboard or the closing of postposition electronic rotation flashboard
Afterwards, preposition soot blowing motor-driven valve or postposition soot blowing motor-driven valve are closed.
The beneficial effects of the invention are as follows：It is simple in structure, it is easy to operate, low-level (stack-gas) economizer both sides and inside can be removed in time
Dust stratification eliminates the influence of dust stratification heat exchanging device heat transfer effect, reduces flue gas resistance, reduces air-introduced machine power consumption, specially：
（1）Timely deashing is found in time
Since stack base is equipped with position material meter, dust stratification amount can be intuitively found in the controls, dust stratification reaches a fixed number
Amount, is actuated for deashing in time.
（2）Control is flexible, voluntarily sets
The electric element of deashing device is connected by control system and controlled, and can voluntarily set stack base dust stratification amount in control system
Deashing is carried out to carry out self-starting electronic rotation flashboard.
（3）It is stable, without noise
Entire deashing device is controlled by control system, and when operation only opens soot-blowing valve, soot cleaning valve, electronic rotation flashboard, utilizes
Compressed air carries out soot blowing, and due to not having a storehouse pump, equipment operation will not generate noise, and equipment automatically controls, thermal control element and its
Its electronic component is less, therefore stable.
（4）Reduce the abrasion of low-level (stack-gas) economizer
Since low-level (stack-gas) economizer front is disposed with deashing device, will in advance be removed by the part lime-ash of low-level (stack-gas) economizer, so
It is reduced by the dust burdening of low-level (stack-gas) economizer, therefore the abrasion of low-level (stack-gas) economizer is reduced.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is 7 in the present invention, preposition blowing pipe and 15, postposition blowing pipe structure diagram.
In figure, 1, inlet flue duct, 2, exhaust pass, 3, low-level (stack-gas) economizer, 4, preposition ash bucket, 5, control system, 6, preposition
Deashing motor-driven valve, 7, preposition blowing pipe, 8, preposition soot blowing motor-driven valve, 9, compressed air hose, 10, deashing pipe, 11, preamble bit material
Meter, 12, preposition electronic rotation flashboard, 13, postposition ash bucket, 14, postposition soot blowing motor-driven valve, 15, postposition blowing pipe, 16, postposition it is clear
Grey motor-driven valve, 17, postposition electronic rotation flashboard, 18, rear set material meter.
Specific embodiment
In order to be more clearly understood that technical scheme of the present invention, the present invention is further described below in conjunction with the accompanying drawings.
Such as Fig. 1, the deashing device of the low-level (stack-gas) economizer shown in 2, inlet flue duct 1 and outlet cigarette including low-level (stack-gas) economizer 3
Road 2 further includes the deashing device set on 3 inlet flue duct 1 of low-level (stack-gas) economizer and 2 bottom of exhaust pass；
The deashing device includes preamble bit material meter 11, rear set material meter 18, preposition electronic rotation flashboard 12, postposition electronic rotation
Flashboard 17, preposition ash bucket 4, postposition ash bucket 13, preposition deashing motor-driven valve 6, postposition deashing motor-driven valve 16, preposition blowing pipe 7, postposition
Blowing pipe 15, preposition soot blowing motor-driven valve 8, postposition soot blowing motor-driven valve 14, compressed air hose 9, deashing pipe 10 and control system 5；
Preamble bit material meter 11 and rear set material meter 18 are set respectively close to the front and rear of low-level (stack-gas) economizer 3, it is described into
Mouth flue 1 and 2 bottom of exhaust pass are respectively equipped with preposition electronic rotation flashboard 12 and postposition electronic rotation flashboard 17, described preposition
Electronic rotation flashboard 12 and 17 lower section of postposition electronic rotation flashboard are connected separately with preposition ash bucket 4 and postposition ash bucket 13, before described
It puts ash bucket 4 and 13 bottom of postposition ash bucket connects respectively with deashing pipe 10, before being respectively equipped on the connecting pipe of the deashing pipe 10
Put deashing motor-driven valve 6 and postposition deashing motor-driven valve 16；
The compressed air hose 9 connects after being inserted into preposition ash bucket 4 and postposition ash bucket 13 respectively with extending vertically into deashing pipe 10 respectively
The preposition blowing pipe 7 and postposition blowing pipe 15 of pipeline connect, and the compressed air hose 9 is equipped with preposition soot blowing motor-driven valve 8 with after
Put soot blowing motor-driven valve 14；The section that extends vertically into of the preposition blowing pipe 7 and postposition blowing pipe 15 is equipped with several soot blowing holes；
It is preamble bit material meter 11, rear set material meter 18, preposition electronic rotation flashboard 12, postposition electronic rotation flashboard 17, preposition
Deashing motor-driven valve 6, postposition deashing motor-driven valve 16, preposition soot blowing motor-driven valve 8, postposition soot blowing motor-driven valve 14 are electric with control system 5
Property connection.
In this preferred embodiment, the flashboard length of the preposition electronic rotation flashboard 12 and postposition electronic rotation flashboard 17 with
Inlet flue duct 1 is equal with the bottom width of exhaust pass 2.
In this preferred embodiment, 17 positional distance low temperature of the preposition electronic rotation flashboard 12 and postposition electronic rotation flashboard
Economizer 3 is 100mm.
In this preferred embodiment, the preamble bit is respectively arranged on import cigarette there are one expecting meter 11 and rear set material meter 18 respectively
The center in road 1 and exhaust pass 2.
In this preferred embodiment, in order to more accurately measure the height of dust stratification, the preamble bit material meter 11 and rear set material
There are three meter 18 is each, it is respectively arranged on the both sides and center of inlet flue duct 1 and exhaust pass 2.
In this preferred embodiment, the compressed air pressure that the compressed air hose 9 provides is 1MP.
In this preferred embodiment, control system 5 is set in preposition electronic rotation flashboard 12 or postposition electronic rotation flashboard 22
After 3s after closing, preposition soot blowing motor-driven valve 8 or postposition soot blowing motor-driven valve 14 are closed.
Operation principle：Preamble bit material meter 11 and rear set material meter 21 detect the front and rear cigarette of low-level (stack-gas) economizer 3 respectively
Road bottom dust stratification content, when 11 or rear set material meter of material meter 21 dust stratification content in preamble bit reach a certain height, control system 5 is vertical
It makes a response preposition deashing motor-driven valve 6 and preposition soot blowing motor-driven valve 8 or postposition deashing motor-driven valve 13 and postposition soot blowing electricity
Dynamic valve 14 is opened, and then control system 5 again opens preposition electronic rotation flashboard 12 or postposition electronic rotation flashboard 22, when preposition
When the dust stratification content of 11 or rear set material meter 21 of position material meter drops to setting minimum value, control system 5 is again by preposition electronic rotation
Closed after flashboard 12 or postposition electronic rotation flashboard 22, at the same compressed air by compressed air hose 9 from preposition blowing pipe 7 and after
The soot blowing hole blowout of blowing pipe 15 is put, prevents dust from blocking deashing pipe 10, ensures the defeated ash system that dust can be connected from deashing pipe 10
System is discharged as early as possible.Dust stratification is defeated after being generally set in the 3s after preposition electronic rotation flashboard 12 or the closing of postposition electronic rotation flashboard 22
Completion is sent, control system 5 closes preposition soot blowing motor-driven valve 8, and deashing motor-driven valve 6 is closed or postposition deashing motor-driven valve later
13 close, and postposition soot blowing motor-driven valve 14 is closed later.The control system 5 uses Shanghai Xinhua control technology（Group）Limited public affairs
Take charge of the product of production（DCS）.After the dust stratification before and after low-level (stack-gas) economizer 3 is cleared up in time, the gas into inside low-level (stack-gas) economizer 3
Flow becomes larger, and air-introduced machine just can siphon away the dust stratification inside low-level (stack-gas) economizer 3 in time.
The configuration of the present invention is simple, it is easy to operate, low-level (stack-gas) economizer bottom dust stratification can be removed in time, eliminate dust stratification heat exchanging
The influence of device heat transfer effect reduces flue gas resistance, reduces the power consumption of the air-introduced machine for flue gas conveying.Present invention operation letter
It is single, dust stratification is safely and effectively conveyed, achievees the purpose that remove low-level (stack-gas) economizer bottom dust stratification.
The above is only the better embodiment of the present invention, therefore all constructions according to described in present patent application range,
The equivalent change or modification that feature and principle are done, is included in the range of present patent application.
Claims (7)
1. a kind of deashing device of low-level (stack-gas) economizer, including low-level (stack-gas) economizer（3）Inlet flue duct（1）And exhaust pass（2）,
It is characterized in that, further includes set on low-level (stack-gas) economizer（3）Inlet flue duct（1）And exhaust pass（2）The deashing device of bottom；
The deashing device includes preamble bit material meter（11）, rear set material meter（18）, preposition electronic rotation flashboard（12）, postposition electricity
Dynamic rotating sluice（17）, preposition ash bucket（4）, postposition ash bucket（13）, preposition deashing motor-driven valve（6）, postposition deashing motor-driven valve（16）、
Preposition blowing pipe（7）, postposition blowing pipe（15）, preposition soot blowing motor-driven valve（8）, postposition soot blowing motor-driven valve（14）, compressed air hose
（9）, deashing pipe（10）And control system（5）；
The preamble bit material meter（11）With rear set material meter（18）Respectively close to low-level (stack-gas) economizer（3）Front and rear setting,
The inlet flue duct（1）And exhaust pass（2）Bottom is respectively equipped with preposition electronic rotation flashboard（12）With postposition electronic rotation lock
Plate（17）, the preposition electronic rotation flashboard（12）With postposition electronic rotation flashboard（17）Lower section is connected separately with preposition ash bucket
（4）With postposition ash bucket（13）, the preposition ash bucket（4）With postposition ash bucket（13）Bottom respectively with deashing pipe（10）Connection, it is described
Deashing pipe（10）Connecting pipe on be respectively equipped with preposition deashing motor-driven valve（6）With postposition deashing motor-driven valve（16）；
The compressed air hose（9）It is inserted into preposition ash bucket respectively（4）With postposition ash bucket（13）Afterwards respectively with extending vertically into deashing pipe
（10）The preposition blowing pipe of connecting pipe（7）With postposition blowing pipe（15）Connection, the compressed air hose（9）It is equipped with preposition blow
Grey motor-driven valve（8）With postposition soot blowing motor-driven valve（14）；The preposition blowing pipe（7）With postposition blowing pipe（15）Extend vertically into section
It is equipped with several soot blowing holes；
The preamble bit material meter（11）, rear set material meter（18）, preposition electronic rotation flashboard（12）, postposition electronic rotation flashboard
（17）, preposition deashing motor-driven valve（6）, postposition deashing motor-driven valve（16）, preposition soot blowing motor-driven valve（8）, postposition soot blowing motor-driven valve
（14）And control system（5）It is electrically connected.
A kind of 2. deashing device of low-level (stack-gas) economizer according to claim 1, which is characterized in that the preposition electronic rotation
Flashboard（12）With postposition electronic rotation flashboard（17）Flashboard length and inlet flue duct（1）And exhaust pass（2）Bottom width
It is equal.
3. the deashing device of a kind of low-level (stack-gas) economizer according to claim 1 or 2, which is characterized in that described preposition electronic
Rotating sluice（12）With postposition electronic rotation flashboard（17）Positional distance low-level (stack-gas) economizer（3）For 100mm.
A kind of 4. deashing device of low-level (stack-gas) economizer according to claim 1, which is characterized in that the preamble bit material meter
（11）With rear set material meter（18）There are one each, it is respectively arranged on inlet flue duct（1）And exhaust pass（2）Center.
A kind of 5. deashing device of low-level (stack-gas) economizer according to claim 1, which is characterized in that the preamble bit material meter
（11）With rear set material meter（18）There are three each, it is respectively arranged on inlet flue duct（1）And exhaust pass（2）Both sides and center.
A kind of 6. deashing device of low-level (stack-gas) economizer according to claim 1, which is characterized in that the compressed air hose
（9）The compressed air pressure of offer is 1MP.
A kind of 7. deashing device of low-level (stack-gas) economizer according to claim 1, which is characterized in that control system（5）Setting
In preposition electronic rotation flashboard（12）Or postposition electronic rotation flashboard（22）After 3s after closing, by preposition soot blowing motor-driven valve（8）
Or postposition soot blowing motor-driven valve（14）It closes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810178452.7A CN108224455A (en) | 2018-03-05 | 2018-03-05 | A kind of deashing device of low-level (stack-gas) economizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810178452.7A CN108224455A (en) | 2018-03-05 | 2018-03-05 | A kind of deashing device of low-level (stack-gas) economizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108224455A true CN108224455A (en) | 2018-06-29 |
Family
ID=62666818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810178452.7A Withdrawn CN108224455A (en) | 2018-03-05 | 2018-03-05 | A kind of deashing device of low-level (stack-gas) economizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108224455A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109974019A (en) * | 2019-04-22 | 2019-07-05 | 亿利洁能科技（宿迁）有限公司 | Flyash recyclable device and its method for recycling flyash |
| CN110090511A (en) * | 2019-06-12 | 2019-08-06 | 中冶北方（大连）工程技术有限公司 | Online ash removal system for activated coke gas cleaning absorbing unit |
| CN114738728A (en) * | 2022-03-24 | 2022-07-12 | 华能国际电力股份有限公司营口电厂 | Thermal power station boiler flue gas heat transfer system |
-
2018
- 2018-03-05 CN CN201810178452.7A patent/CN108224455A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109974019A (en) * | 2019-04-22 | 2019-07-05 | 亿利洁能科技（宿迁）有限公司 | Flyash recyclable device and its method for recycling flyash |
| CN109974019B (en) * | 2019-04-22 | 2023-09-29 | 亿利洁能科技（宿迁）有限公司 | Fly ash recovery device and method for recovering fly ash |
| CN110090511A (en) * | 2019-06-12 | 2019-08-06 | 中冶北方（大连）工程技术有限公司 | Online ash removal system for activated coke gas cleaning absorbing unit |
| CN114738728A (en) * | 2022-03-24 | 2022-07-12 | 华能国际电力股份有限公司营口电厂 | Thermal power station boiler flue gas heat transfer system |
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Application publication date: 20180629 |
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