CN107218615A - It is a kind of to improve the soot blower of SCR inlet flow field uniformity - Google Patents
It is a kind of to improve the soot blower of SCR inlet flow field uniformity Download PDFInfo
- Publication number
- CN107218615A CN107218615A CN201710405350.XA CN201710405350A CN107218615A CN 107218615 A CN107218615 A CN 107218615A CN 201710405350 A CN201710405350 A CN 201710405350A CN 107218615 A CN107218615 A CN 107218615A
- Authority
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- Prior art keywords
- flue
- compressed air
- branch pipe
- compressed
- air branch
- Prior art date
- 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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- 239000004071 soot Substances 0.000 title claims abstract description 55
- 238000007664 blowing Methods 0.000 claims abstract description 42
- 239000000779 smoke Substances 0.000 claims abstract description 4
- 239000007921 spray Substances 0.000 claims description 23
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 7
- 239000003546 flue gas Substances 0.000 claims description 7
- 235000019504 cigarettes Nutrition 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 claims description 3
- 238000005728 strengthening Methods 0.000 claims 1
- 239000000428 dust Substances 0.000 abstract description 18
- 238000013517 stratification Methods 0.000 abstract description 10
- 238000004140 cleaning Methods 0.000 abstract description 2
- 238000010926 purge Methods 0.000 description 13
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 10
- 229910021529 ammonia Inorganic materials 0.000 description 5
- 238000000151 deposition Methods 0.000 description 5
- 230000008021 deposition Effects 0.000 description 5
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005243 fluidization Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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
- F23J3/026—Cleaning furnace tubes; Cleaning flues or chimneys cleaning the 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
Improve the soot blower of SCR inlet flow field uniformity the present invention relates to a kind of, it is characterised in that：Including compressed air main pipe, compressed and multiplexed air branch pipe, pressure gauge and soot blowing blast cap, the compressed air main pipe is connected with station-service compressed air piping, the compressed and multiplexed air branch pipe is connected with the compressed air main pipe, the soot blowing blast cap is communicated in the compressed and multiplexed air branch pipe, the pressure gauge is arranged on the compressed and multiplexed air branch pipe, and the pressure gauge and soot-blowing wind shade compressed air flowing direction are set gradually, the soot blowing blast cap is installed in flue, flue is connected with deflector, deflector is connected with downstream flue, flue, deflector and downstream flue are set gradually along smoke movement direction.Present invention saves during each shutdown more due to dust stratification because of a large amount of manpowers that need to expend of cleaning dust stratification and time.
Description
Technical field
Improve the soot blower of SCR inlet flow field uniformity the present invention relates to a kind of, belong to coal-burning power plant's dust deposit in flue and prevent
Control technical field.
Background technology
Coal-fired plant boiler dust deposit in flue is current coal-burning power plant's generally existing problem.In recent years, as country is to fire coal
Power plant pollution thing emission request is more and more harsher, and coal-burning boiler is formulated with SCR denitration system substantially, to meet boiler NOxRow
Unconventional and unrestrained target requirement.Coming into operation for SCR device is not completed initial stage in boiler design, but the later stage sets up because environmental requirement needs
, this just makes most units its correspondence flue size and former boiler economizer exhaust pass size in the design and installation of later stage SCR
It is difficult to perfect matching, therefore often lead to economizer exit horizontal flue and there is sudden expansion with SCR inlet flue（SCR inlet flue
Size>Economizer mouthpiece horizontal flue size）, this aspect makes cigarette prompt drop is low to cause part flying dust deposition, while the cigarette of sudden expansion
There is low velocity eddy in road both sides, also result in the generation of dust stratification at this, be limited in addition by SCR arrangements, and flue gas is before SCR is entered
Foregoing economizer exit horizontal flue is first passed through, is then turned back into SCR inlet vertical gas pass, during turning back herein
The deposition of a large amount of flying dusts can also be caused by being affected by gravity.
SCR denitration efficiency is to boiler NOxDischarge and its upstream device it is most important safely, influence SCR efficiency it is important because
One of element is the uniformity in SCR inlet flow field, if its entrance flow field uniformity is poor, on the one hand causes denitration efficiency to reduce, separately
On the one hand also result in local spray ammonia excessive, cause SCR amount of ammonia slip big, influence the operation safety of upstream device, therefore to protect
The uniformity in SCR inlet flow field is demonstrate,proved, deflector is set in its entrance vertical gas pass return region.As it was previously stated, actual motion feelings
Condition also indicates that dust stratification is serious at this, and lower floor's deflector is blocked by dust stratification substantially in most cases, so as to have impact on SCR inlet flow field
Uniformity.
Current SCR inlet has no effectively soot blower, while limited by space also without ash conveying device, therefore dust stratification at this
Artificial deashing is used in each shut down, substantial amounts of manpower and time is consumed.Based on above reason, to efficiently solve
The problem of dust stratification causes SCR flow fields uneven in SCR inlet flue, need to develop it is effective prevent SCR inlet dust deposit in flue be
System and device.
Chinese patent 201310409471.3 discloses a kind of deashing device for SCR denitration reactor, it include according to
Air compressor, surge tank, magnetic valve and the air jet pipe net unit module of secondary connection, air jet pipe net unit module are de- positioned at SCR
The top of nitre catalyst in reactor unit, corresponds with catalyst elements and arranges.The program is limited to soot blowing effect, exists
Soot blowing dead band, is unfavorable for actual use.
The content of the invention
The present invention be in order to effectively solve the problem of coal-burning power plant's SCR inlet dust deposit in flue is serious, save deashing manpower and
SCR flow field uniformities, and then a kind of soot blower of the improvement SCR inlet flow field uniformity provided are provided while time.This
The technical scheme of invention is：It is a kind of to improve the soot blower of SCR inlet flow field uniformity, it is characterised in that：Including compressed air
Main pipe, compressed and multiplexed air branch pipe, pressure gauge and soot blowing blast cap, the compressed air main pipe connect with station-service compressed air piping
Logical, the compressed and multiplexed air branch pipe is connected with the compressed air main pipe, and the soot blowing blast cap is communicated in the multichannel pressure
Contracting air branch pipe, the pressure gauge is arranged on the compressed and multiplexed air branch pipe, and the pressure gauge and the soot blowing blast cap
Set gradually along compressed air flowing direction, the soot blowing blast cap is installed in flue, flue is connected with deflector, deflector connects
Downstream flue is connected to, flue, deflector and downstream flue are set gradually along smoke movement direction.
Present invention additionally comprises compressed air main pipe manual switch valve, compressed air branch pipe electromagnetic switch valve, communication cable and
The time relay, the compressed air main pipe manual switch valve is installed in the compressed air main pipe, the compressed air branch
Pipe electromagnetic switch valve is installed on the compressed and multiplexed air branch pipe, and the compressed air branch pipe electromagnetic switch valve passes through the electricity that communicates
Cable is connected with the time relay, the compressed air main pipe manual switch valve, the compressed air branch pipe electromagnetic switch valve,
Pressure gauge and soot-blowing wind shade compressed air the flowing direction is set gradually.Passage time relay realizes compressed air branch pipe
The discontinuity time switch of electromagnetic switch valve.
Soot blowing blast cap of the present invention includes conduit and spray cap, and spray cap and conduit are integral type structure and spray cap in conduit
Top；Spout is provided with spray cap, spout includes inwall side circle and outer wall side circle, and inwall side diameter of a circle is less than what outer wall side was justified
Diameter.Conduit and spray cap use and are welded to connect or are integrally formed processing.A spray is each provided with the front, rear, left and right end of spray cap
Mouthful, four spouts altogether.It is circle to spray cap cross section, and four spouts of spray cap constitute square four summit.Inwall
The diverging that side diameter of a circle is less than outer wall side diameter of a circle to realize blowing medium is sprayed, i.e. dispersion angle α>0°.Institute of the present invention
Stating flue includes offering aperture on flue inner wall, the lower horizontal wall surface of the flue inner wall, and the soot blowing blast cap passes through aperture
The inside and welded seal for stretching into the flue are fixed, and reinforcement otic placode is provided with the outside of the flue, and the soot blowing blast cap leads to
Cross and strengthen the outside that otic placode is fixed on flue, the distance of the centre-to-centre spacing flue inner wall of spout is L, L >=85mm.Soot blowing blast cap is stretched into
Simultaneously welded seal is fixed for the inside of flue.
Compressed and multiplexed air branch pipe quantity of the present invention is multiple, is mounted on each compressed and multiplexed air branch pipe many
Individual soot blowing blast cap.Soot blowing blast cap is intervally arranged on compressed and multiplexed air branch pipe, according to the compression in station-service compressed air piping
Air pressure is different, makees appropriate adjust to the spacing between two soot blowing blast caps adjacent on the compressed and multiplexed air branch pipe of same
It is whole, to ensure that all soot blowing blast cap purge zone domains cover whole flue region, in the absence of purging " dead band ".
Flue of the present invention includes being mounted on compressed and multiplexed air in slope section and horizontal segment, slope section and horizontal segment
Branch pipe, and the installation direction of compressed and multiplexed air branch pipe is vertical with the moving direction of high-temperature flue gas in flue.
The present invention has the following effects that compared with prior art：Using compressed air（0.5~1.0MPa）, during by purging
Between control system realize purging switch discontinuity time switch, will so as to realize in the flue of SCR inlet that discontinuity timing is purged
Taken away after deposition flying dust disturbance fluidisation by flue gas, prevent a large amount of depositions of a large amount of flying dusts in this place, cause SCR inlet flow uneven
Even, influence SCR denitration efficiency and amount of ammonia slip are big, while because of cleaning product when also saving each shutdown more due to dust stratification at this
A large amount of manpowers and time that ash expends.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram of the embodiment of the present invention.
Fig. 2 is the agent structure schematic diagram of the embodiment of the present invention.
Fig. 3 is the cross section structure diagram of the soot blowing blast cap of the embodiment of the present invention.
Fig. 4 be in Fig. 3 A-A to sectional view.
Embodiment
Below in conjunction with the accompanying drawings and the present invention is described in further detail by embodiment, following examples are to this hair
Bright explanation and the invention is not limited in following examples.
Embodiment.
Referring to Fig. 1-4.
The present embodiment for it is a kind of improve SCR inlet flow field uniformity soot blower, including compressed and multiplexed air branch pipe 4,
Compressed air main pipe 5, branch pipe pressure monitor system, soot blower, compressed air main pipe manual switch valve 6, communication cable 10, branch
Pipe purging switch and purge time control system.
Preferably, branch pipe pressure monitor system selects pressure gauge 8 in the present embodiment, soot blower selects soot blowing blast cap 9,
Branch pipe purging switch selects the time relay 11 from compressed air branch pipe electromagnetic switch valve 7, purge time control system.
Preferably, the compressed and multiplexed quantity of air branch pipe 4 of the present embodiment is multiple, on each compressed and multiplexed air branch pipe 4
It is mounted on multiple soot blowing blast caps 9.Soot blowing blast cap 9 is intervally arranged on compressed and multiplexed air branch pipe 4, according to station-service compressed air
Compressed air pressure in pipeline is different, between two soot blowing blast caps 9 adjacent on the compressed and multiplexed air branch pipe 4 of same
Spacing is appropriately adjusted, to ensure all whole regions of flue 1 of the purging region overlay of soot blowing blast cap 9, in the absence of purging " dead band ".
Compressed air main pipe 5 is connected with station-service compressed air piping, compressed and multiplexed air branch pipe 4 and compressed air main pipe 5
It is connected, soot blowing blast cap 9 is communicated in compressed and multiplexed air branch pipe 4, pressure gauge 8 is arranged on compressed and multiplexed air branch pipe 4, and pressure
Power table 8 and soot blowing blast cap 9 are set gradually along compressed air flowing direction, and soot blowing blast cap 9 is installed in flue 1.Station-service compression is empty
Compressed air is passed through in feed channel, compressed air flows into compressed air main pipe 5 from station-service compressed air piping, then by compressed air
Main pipe 5 enters each compressed and multiplexed air branch pipe 4.A pressure gauge has been separately configured on each compressed and multiplexed air branch pipe 4
8, the compressed air pressure that each pressure gauge 8 is used in independent measurement each compressed and multiplexed air branch pipe 4.
Flue 1 is connected with deflector 3, and deflector 3 is connected with downstream flue 2, flue 1, deflector 3 and the edge of downstream flue 2
Smoke movement direction is set gradually.
Compressed air main pipe manual switch valve 6 is installed in compressed air main pipe 5, compressed air branch pipe electromagnetic switch valve 7
It is installed on compressed and multiplexed air branch pipe 4, compressed air branch pipe electromagnetic switch valve 7 passes through communication cable 10 and the time relay 11
It is connected, compressed air main pipe manual switch valve 6, compressed air branch pipe electromagnetic switch valve 7, pressure gauge 8 and soot blowing blast cap 9 are along compression
Air-flow direction is set gradually.Passage time relay realizes that the discontinuity timing of compressed air branch pipe electromagnetic switch valve 7 is opened
Close.
Soot blowing blast cap 9 includes conduit 91 and spray cap 92, and spray cap 92 and conduit 91 are integral type structure and spray cap 92 in conduit
91 top；Be provided with spout 13 on spray cap 92, spout 13 includes inwall side circle 16 and outer wall side circle 15, inwall side circle 16 it is straight
Footpath is less than the diameter that outer wall side justifies 15.Conduit 91 and spray cap 92 use and are welded to connect or are integrally formed processing.Before spray cap 92,
Afterwards, left and right end is each provided with a spout 13, altogether four spouts 13.It is circle, four sprays of spray cap 92 to spray the cross section of cap 92
Mouth 13 constitutes square four summits.The diameter of inwall side circle 16, which is less than outer wall side, to be justified 15 diameter to realize that purging is situated between
The diverging injection of matter, i.e. dispersion angle α>0°.
Flue 1 includes offering aperture on flue inner wall 12, the lower horizontal wall surface of flue inner wall 12, and soot blowing blast cap 9 passes through
Aperture stretches into the inside of flue 1 and welded seal is fixed, and the outside of flue 1 is provided with reinforcement otic placode 14, and soot blowing blast cap 9 is by adding
Strong otic placode 14 is fixed on the outside of flue 1, and the distance of the centre-to-centre spacing flue inner wall 12 of spout 13 is L, L >=85mm.Soot blowing blast cap 9
The inside and welded seal for stretching into flue 1 are fixed.
Flue 1 includes being respectively mounted compressed and multiplexed air branch pipe 4 in slope section A and horizontal segment B, slope section A and horizontal segment B,
And the installation direction of compressed and multiplexed air branch pipe 4 is vertical with the moving direction of flue gas in flue 1.Slope section A and horizontal segment B point
Boundary line is that flue is vertically turned back line C.
The present embodiment aim to solve the problem that in the flue 1 of coal-fired plant boiler SCR inlet flue gas flow direction from be horizontally diverted it is vertical to
On, the flue 1 of economizer exit level causes SCR inlet dust deposit in flue to the vertical area sudden expansion of flue 1 of SCR inlet in addition,
Cause SCR inlet flow uneven, so that the problem of influenceing SCR denitration efficiency and big amount of ammonia slip, while also saving at this
Because clearing up a large amount of manpowers and the time that dust stratification need to expend during each shutdown more due to dust stratification.The present embodiment uses compressed air
（0.5~1.0MPa）, purging switch discontinuity time switch is realized by purge time control system, so as to realize SCR inlet cigarette
Discontinuity timing is purged in road, will be taken away after deposition flying dust disturbance fluidisation by flue gas, prevents a large amount of flying dusts in this place a large amount of heavy
Product, causes SCR inlet flow uneven, and influence SCR denitration efficiency and amount of ammonia slip are big.
Furthermore, it is necessary to explanation, the specific embodiment described in this specification, is named the shape of its parts and components
Title etc. can be different.The equivalent or simple change that all construction, feature and principles according to described in inventional idea of the present invention are done, is wrapped
Include in the protection domain of patent of the present invention.Those skilled in the art can be to described specific implementation
Example is made various modifications or supplement or substituted using similar mode, structure without departing from the present invention or surmounts this
Scope as defined in the claims, all should belong to protection scope of the present invention.
Claims (6)
1. a kind of improve the soot blower of SCR inlet flow field uniformity, it is characterised in that：Including compressed air main pipe（5）, multichannel
Compressed air branch pipe（4）, pressure gauge（8）And soot blowing blast cap（9）, the compressed air main pipe（5）With station-service compressed air hose
Road is connected, the compressed and multiplexed air branch pipe（4）With the compressed air main pipe（5）It is connected, the soot blowing blast cap（9）Connection
In the compressed and multiplexed air branch pipe（4）, the pressure gauge（8）Installed in the compressed and multiplexed air branch pipe（4）On, and it is described
Pressure gauge（8）With the soot blowing blast cap（9）Set gradually along compressed air flowing direction, the soot blowing blast cap（9）It is installed on cigarette
Road（1）In, flue（1）It is connected with deflector（3）, deflector（3）It is connected with downstream flue（2）, flue（1）, deflector（3）With
Downstream flue（2）Set gradually along smoke movement direction.
2. according to claim 1 improve the soot blower of SCR inlet flow field uniformity, it is characterised in that：Also include pressure
Contracting air main pipe manual switch valve（6）, compressed air branch pipe electromagnetic switch valve（7）, communication cable（10）And the time relay
（11）, the compressed air main pipe manual switch valve（6）It is installed on the compressed air main pipe（5）On, the compressed air branch
Pipe electromagnetic switch valve（7）It is installed on the compressed and multiplexed air branch pipe（4）On, the compressed air branch pipe electromagnetic switch valve（7）
Pass through communication cable（10）With the time relay（11）It is connected, the compressed air main pipe manual switch valve（6）, the pressure
Contracting air branch pipe electromagnetic switch valve（7）, the pressure gauge（8）With soot blowing blast cap（9）Set gradually along compressed air flowing direction.
3. according to claim 1 or 2 improve the soot blower of SCR inlet flow field uniformity, it is characterised in that：It is described to blow
Grey blast cap（9）Including conduit（91）With spray cap（92）, spray cap（92）And conduit（91）For integral type structure and spray cap（92）Leading
Pipe（91）Top；In spray cap（92）On be provided with spout（13）, spout（13）Including inwall side circle（16）With outer wall side circle（15）,
Justify inwall side（16）Diameter less than outer wall side justify（15）Diameter.
4. according to claim 3 improve the soot blower of SCR inlet flow field uniformity, it is characterised in that：The flue
（1）Including flue inner wall（12）, the flue inner wall（12）Lower horizontal wall surface on offer aperture, the soot blowing blast cap（9）
The flue is stretched into by aperture（1）Inside and welded seal fix, the flue（1）Outside be provided with reinforcement otic placode
（14）, the soot blowing blast cap（9）By strengthening otic placode（14）It is fixed on flue（1）Outside, spout（13）Centre-to-centre spacing flue
Inwall（12）Distance be L, L >=85mm.
5. according to claim 1 or 2 improve the soot blower of SCR inlet flow field uniformity, it is characterised in that：It is described many
Road compressed air branch pipe（4）Quantity to be multiple, each compressed and multiplexed air branch pipe（4）On be mounted on multiple soot blowing blast caps
（9）.
6. according to claim 1 or 2 improve the soot blower of SCR inlet flow field uniformity, it is characterised in that：The cigarette
Road（1）Including slope section（A）And horizontal segment（B）, the slope section（A）With the horizontal segment（B）Inside it is mounted on the multichannel
Compressed air branch pipe（4）, and the compressed and multiplexed air branch pipe（4）Installation direction and the flue（1）Interior high-temperature flue gas
Moving direction is vertical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710405350.XA CN107218615A (en) | 2017-06-01 | 2017-06-01 | It is a kind of to improve the soot blower of SCR inlet flow field uniformity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710405350.XA CN107218615A (en) | 2017-06-01 | 2017-06-01 | It is a kind of to improve the soot blower of SCR inlet flow field uniformity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107218615A true CN107218615A (en) | 2017-09-29 |
Family
ID=59947984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710405350.XA Pending CN107218615A (en) | 2017-06-01 | 2017-06-01 | It is a kind of to improve the soot blower of SCR inlet flow field uniformity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107218615A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679636A (en) * | 2018-06-20 | 2018-10-19 | 中国华电科工集团有限公司 | A kind of soot cleaning system and operation method for thermal power plant's low-level (stack-gas) economizer |
| CN109442445A (en) * | 2018-10-16 | 2019-03-08 | 华电电力科学研究院有限公司 | A kind of novel soot blower system and its working method for station boiler horizontal flue |
| CN109458626A (en) * | 2018-11-13 | 2019-03-12 | 华电电力科学研究院有限公司 | A kind of rotation soot blower and its ash-blowing method improving denitration gas approach flow field uniformity |
| CN111686952A (en) * | 2020-07-15 | 2020-09-22 | 杭州华电能源工程有限公司 | Cyclone nozzle of pneumatic soot blowing system of coal-fired boiler and soot blowing method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202012930U (en) * | 2011-03-31 | 2011-10-19 | 华电电力科学研究院 | Local soot blowing device of W-shaped flame boiler |
| CN202590629U (en) * | 2011-12-21 | 2012-12-12 | 浙江蓝天求是环保集团有限公司 | Selective catalytic reduction (SCR) inlet flue soot blower |
| CN202792064U (en) * | 2012-09-28 | 2013-03-13 | 南京龙源环保有限公司 | Anti-deposition flue system of selective catalytic reduction (SCR) denitration reactor |
| CN207035169U (en) * | 2017-06-01 | 2018-02-23 | 华电电力科学研究院 | Improve the soot blower of SCR inlet flow field uniformity |
-
2017
- 2017-06-01 CN CN201710405350.XA patent/CN107218615A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202012930U (en) * | 2011-03-31 | 2011-10-19 | 华电电力科学研究院 | Local soot blowing device of W-shaped flame boiler |
| CN202590629U (en) * | 2011-12-21 | 2012-12-12 | 浙江蓝天求是环保集团有限公司 | Selective catalytic reduction (SCR) inlet flue soot blower |
| CN202792064U (en) * | 2012-09-28 | 2013-03-13 | 南京龙源环保有限公司 | Anti-deposition flue system of selective catalytic reduction (SCR) denitration reactor |
| CN207035169U (en) * | 2017-06-01 | 2018-02-23 | 华电电力科学研究院 | Improve the soot blower of SCR inlet flow field uniformity |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679636A (en) * | 2018-06-20 | 2018-10-19 | 中国华电科工集团有限公司 | A kind of soot cleaning system and operation method for thermal power plant's low-level (stack-gas) economizer |
| CN109442445A (en) * | 2018-10-16 | 2019-03-08 | 华电电力科学研究院有限公司 | A kind of novel soot blower system and its working method for station boiler horizontal flue |
| CN109458626A (en) * | 2018-11-13 | 2019-03-12 | 华电电力科学研究院有限公司 | A kind of rotation soot blower and its ash-blowing method improving denitration gas approach flow field uniformity |
| CN111686952A (en) * | 2020-07-15 | 2020-09-22 | 杭州华电能源工程有限公司 | Cyclone nozzle of pneumatic soot blowing system of coal-fired boiler and soot blowing method |
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Application publication date: 20170929 |