CN109458626A - A kind of rotation soot blower and its ash-blowing method improving denitration gas approach flow field uniformity - Google Patents
A kind of rotation soot blower and its ash-blowing method improving denitration gas approach flow field uniformity Download PDFInfo
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- CN109458626A CN109458626A CN201811347967.1A CN201811347967A CN109458626A CN 109458626 A CN109458626 A CN 109458626A CN 201811347967 A CN201811347967 A CN 201811347967A CN 109458626 A CN109458626 A CN 109458626A
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- Prior art keywords
- compressed air
- flue
- branch pipe
- rotation
- cap
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- 239000004071 soot Substances 0.000 title claims abstract description 69
- 238000007664 blowing Methods 0.000 title claims abstract description 60
- 238000013459 approach Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000000428 dust Substances 0.000 claims abstract description 27
- 239000007789 gas Substances 0.000 claims abstract description 25
- 238000013517 stratification Methods 0.000 claims abstract description 17
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000003546 flue gas Substances 0.000 claims abstract description 14
- 239000007921 spray Substances 0.000 claims description 26
- 238000010926 purge Methods 0.000 claims description 17
- 238000004891 communication Methods 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000005243 fluidization Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 230000002265 prevention Effects 0.000 abstract description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 10
- 206010037544 Purging Diseases 0.000 description 7
- 229910021529 ammonia Inorganic materials 0.000 description 5
- 238000000151 deposition Methods 0.000 description 5
- 230000008021 deposition Effects 0.000 description 5
- 235000019504 cigarettes Nutrition 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 238000013461 design Methods 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
- 238000012545 processing Methods 0.000 description 1
- 239000000243 solution 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The present invention relates to a kind of rotation soot blowers and its ash-blowing method for improving denitration gas approach flow field uniformity, belong to coal-burning power plant dust deposit in flue Prevention Technique field.The present invention includes compressed air main pipe, compressed air branch pipe, pressure gauge and rotation soot blowing blast cap, compressed air main pipe is connected to station-service compressed air pipe, compressed air branch pipe is connected to compressed air main pipe, rotation soot blowing blast cap is connected to compressed air branch pipe, pressure gauge is mounted on compressed air branch pipe, and pressure gauge and rotation soot blowing blast cap are set gradually along compressed air flowing direction, rotation soot blowing blast cap is installed in flue, and deflector is provided in flue, deflector is connect with downstream flue, flue, deflector and downstream flue are set gradually along flow of flue gas direction.Present invention saves, because clearing up a large amount of manpowers and time that dust stratification need to expend, avoid flue caused by conventional soot blower washes away for a long time when each shutdown more due to dust stratification and leak.
Description
Technical field
The present invention relates to a kind of rotation soot blowers and its ash-blowing method for improving denitration gas approach flow field uniformity, belong to
In coal-burning power plant dust deposit in flue Prevention Technique field.
Background technique
Coal-fired plant boiler dust deposit in flue is the generally existing problem in current coal-burning power plant.In recent years, as country is to fire coal
Power plant pollution object emission request is more and more harsher, and coal-burning boiler is formulated with denitrating system substantially, to meet boiler NOxDischarge reaches
Target requirement.Coming into operation for denitration device is not completed at boiler design initial stage, but what the later period added by environmental requirement needs,
This just makes most units its correspondence flue size and former boiler economizer exhaust pass ruler when later period denitration device is designed and installed
It is very little to be difficult perfect matching, therefore often lead to economizer exit horizontal flue there are sudden expansion (SCR inlet cigarettes with denitration gas approach
Road size > economizer mouthpiece horizontal flue size), this aspect makes the reduction of cigarette speed that part flying dust be caused to deposit, while sudden expansion
Flue two sides also result in the generation of dust stratification at this there are low velocity eddy, are furthermore limited by denitration device setting, flue gas into
Foregoing economizer exit horizontal flue is first passed through before entering denitration device, is then turned back into equipment entrance vertical gas pass,
The deposition that also will lead to a large amount of flying dusts is affected by gravity during turning back herein.
Denitration efficiency is to boiler NOxAn important factor for discharge and its upstream device are most important safely, influence denitration efficiency
One of on the one hand denitration efficiency is caused to reduce if its entrance flow field uniformity is poor for the uniformity in entrance flow field, on the other hand
It is excessive to also result in part spray ammonia, causes amount of ammonia slip big, influences the operational safety of upstream device, therefore, in order to ensure that denitrification apparatus
Deflector is arranged in its entrance vertical gas pass return region in the uniformity in entrance flow field.As previously mentioned, practical operation situation also table
Bright dust stratification at this is serious, and lower layer's deflector is blocked by dust stratification substantially in most cases, to affect the equal of gas approach flow field
Even property.
The denitration entrance of major part power plant has no effectively soot blower at present, while being limited by space and also being filled without defeated ash
It sets, therefore dust stratification uses artificial deashing in each shut down at this, consumes a large amount of manpower and time；It exists simultaneously individual
Power plant carries out soot blowing using stationary sootblower, easily causes flue damaged, influences the safe and stable operation of unit.Based on the above original
Cause leads to the problem of flow field unevenness to efficiently solve dust stratification in denitration gas approach, and need to develop effectively prevents denitration entrance
The system and device of dust deposit in flue.
Chinese patent 201310409471.3 discloses a kind of deashing device for SCR denitration reaction device, it include according to
Air compressor, surge tank, solenoid 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, is arranged in a one-to-one correspondence with catalyst elements.The program is limited to soot blowing effect, exists
Soot blowing dead zone is unfavorable for actually using.
Summary of the invention
The purpose of the invention is to effectively solve the problems, such as that denitration gas approach dust stratification in coal-burning power plant's is serious, deashing is saved
Manpower and time improve the flow field uniformity of denitrification apparatus while preventing flue caused by fixed-direction soot blowing damaged, Jin Erti
The rotation soot blower and its ash-blowing method of improvement denitration gas approach flow field uniformity are supplied.
Technical solution used by the present invention solves the above problems is: a kind of improvement denitration gas approach flow field uniformity
Rotate soot blower, it is characterised in that: including compressed air main pipe, compressed air branch pipe, pressure gauge and soot blowing blast cap is rotated,
The compressed air main pipe is connected to station-service compressed air pipe, and the compressed air branch pipe and the compressed air main pipe connect
Logical, the rotation soot blowing blast cap is connected to the compressed air branch pipe, and the pressure gauge is mounted on the compressed air branch pipe,
And the pressure gauge and the rotation soot blowing blast cap are set gradually along compressed air flowing direction, the rotation soot blowing blast cap peace
Loaded in flue, and deflector is provided in flue, the deflector is connect with downstream flue, the flue, deflector and under
Trip flue is set gradually along flow of flue gas direction.
The invention also includes 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 are installed in the compressed air main pipe, the compressed air branch
Pipe electromagnetic switch valve is installed on the compressed air branch pipe, the compressed air branch pipe electromagnetic switch valve by communication cable with
The time relay is connected, the compressed air main pipe manual switch valve, the compressed air branch pipe electromagnetic switch valve, described
Pressure gauge and rotation soot blowing blast cap are set gradually along compressed air flowing direction.Compressed air branch pipe is realized by the time relay
The discontinuity time switch of electromagnetic switch valve.
Rotation soot blowing blast cap of the present invention includes spray cap and connecting tube, the spray cap and connecting tube be an integral structure and
Cap is sprayed in the top of connecting tube；Spout is provided on spray cap, spout includes that inner wall side is round and outer wall side is round, inner wall side diameter of a circle
Less than outer wall side diameter of a circle.Connecting tube and spray cap using welded connecting or are integrally formed processing.In the front, rear, left and right of spray cap
End is each provided with a spout, amounts to four spouts.Spraying cap cross section is circle, and four spouts for spraying cap form a square
Four vertex.Inner wall side diameter of a circle is less than outer wall side diameter of a circle to realize the diverging injection of blowing medium, the i.e. angle of divergence
Spend α > 0 °.
Flue of the present invention includes flue inner wall, and aperture, the rotation are offered on the lower wall surface of the flue inner wall
Soot blowing blast cap protrudes into the inside of the flue by aperture and welded seal is fixed, and reinforcement ear is provided on the outside of the flue
Plate, the rotation soot blowing blast cap are fixed on the outside of flue by reinforcement otic placode, the center of the spout away from flue inner wall away from
From for L, L >=85mm.
The quantity of compressed air branch pipe of the present invention be it is multiple, be mounted on multiple rotations on each compressed air branch pipe
Soot blowing blast cap.Rotation soot blowing blast cap is intervally arranged on compressed air branch pipe, empty according to the compression in station-service compressed air pipe
Atmospheric pressure is different, appropriately adjusts to the spacing between two soot blowing blast caps adjacent on same compressed air branch pipe, to protect
It demonstrate,proves all soot blowing blast caps purge zone domain and covers entire flue region, there is no purgings " dead zone ".
Flue of the present invention includes slope section and horizontal segment, is mounted in the slope section and the horizontal segment described
Compressed air branch pipe, and the installation direction of the compressed air branch pipe is vertical with the flow direction of high-temperature flue gas in the flue.
The ash-blowing method of the rotation soot blower of above-mentioned improvement denitration gas approach flow field uniformity is as follows: using 0.5 ~
The compressed air of 1.0MPa realizes purging switch discontinuity time switch by the time relay, to realize denitration entrance cigarette
Discontinuity timing purges in road；Compressed air is entered in rotation soot blowing blast cap by compressed air main pipe and compressed air branch pipe,
Enter spray cap by connecting tube in rotation soot blowing blast cap internal pressure contracting air, dust stratification is disturbed from spout ejection later, sprays cap
It is rotated under the reaction force of compressed air, the dust stratification fluidisation for spraying cap surrounding is got up, the flying dust quilt under the disturbance of flue gas
It takes away.
Compared with prior art, the present invention having the following advantages that and effect: using 0.5 ~ 1.0MPa of compressed air, by blowing
Flyback time control system realizes purging switch discontinuity time switch, realizes that discontinuity timing purges in the flue of denitration entrance,
Simultaneously by the rotation of blast cap, expand soot blowing coverage area, will be taken away after deposition flying dust disturbance fluidisation by flue gas, prevent from largely flying
A large amount of depositions of the ash at this, cause denitration gas approach process uneven, influence denitration efficiency and amount of ammonia slip is big, keep away simultaneously
Exempt from sootblowing dielectric and breakage caused by brush is blown to same position for a long time, it is timely to save a large amount of manpowers that shutdown cleaning dust stratification expends
Between, guarantee the safety and stability economical operation of unit.
Detailed description of the invention
Fig. 1 is the schematic perspective view of the embodiment of the present invention.
Fig. 2 is the schematic view of the front view of the embodiment of the present invention.
Fig. 3 is the schematic cross-sectional view of the rotation soot blowing blast cap of the embodiment of the present invention.
Fig. 4 be in Fig. 3 D-D to cross-sectional view.
In figure: flue 1, downstream flue 2, deflector 3, compressed air branch pipe 4, compressed air main pipe 5, compressed air main pipe
Manual switch valve 6, compressed air branch pipe electromagnetic switch valve 7, pressure gauge 8, rotation soot blowing blast cap 9, communication cable 10, time relay
Device 11, flue inner wall 12, spout 13, spray cap 91, connecting tube 92, spray cap lower platen 93, ball 94, slope section A, horizontal segment B, cigarette
Vertically turn back line C in road.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawing and by embodiment, and following embodiment is to this hair
Bright explanation and the invention is not limited to following embodiments.
Embodiment.
Referring to Fig. 1 to Fig. 4, a kind of rotation soot blower improving denitration gas approach flow field uniformity, including compression are empty
Gas main pipe 5, compressed air branch pipe 4, 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 rotation soot-blowing wind
Cap 9, branch pipe purging switch select compressed air branch pipe electromagnetic switch valve 7, and purge time control system selects the time relay 11.
The quantity of compressed air branch pipe 4 be it is multiple, multiple rotation soot blowing blast caps are mounted on each compressed air branch pipe 4
9.Rotation soot blowing blast cap 9 is intervally arranged on compressed air branch pipe 4, according to the compressed air pressure in station-service compressed air pipe
Difference appropriately adjusts the spacing between two rotation soot blowing blast caps 9 adjacent on same compressed air branch pipe 4, to protect
It demonstrate,proves all rotation soot blowing blast caps 9 and purges entire 1 region of flue of region overlay, there is no purgings " dead zone ".
Compressed air main pipe 5 is connected to station-service compressed air pipe, and compressed air branch pipe 4 is connected to compressed air main pipe 5,
Rotation soot blowing blast cap 9 is connected to compressed air branch pipe 4, and pressure gauge 8 is mounted on compressed air branch pipe 4, and pressure gauge 8 and rotation
Soot blowing blast cap 9 is set gradually along compressed air flowing direction, and rotation soot blowing blast cap 9 is installed in flue 1, station-service compressed air
Compressed air is passed through in pipeline, compressed air flows into compressed air main pipe 5 from station-service compressed air pipe, then by compressed air mother
Pipe 5 enters each compressed air branch pipe 4.A pressure gauge 8, each pressure have been separately configured on each compressed air branch pipe 4
Table 8 is for the compressed air pressure in each compressed air branch pipe 4 of independent measurement.
Deflector 3 is provided in flue 1, deflector 3 is connect with downstream flue 2, flue 1, deflector 3 and downstream flue 2
It is set gradually along flow of flue gas direction.
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 air branch pipe 4, compressed air branch pipe electromagnetic switch valve 7 passes through communication cable 10 and 11 phase of the time relay
Even, compressed air main pipe manual switch valve 6, compressed air branch pipe electromagnetic switch valve 7, pressure gauge 8 and rotation soot blowing blast cap 9 are along pressure
Stream of compressed air moves direction and sets gradually.Realize that the discontinuity of compressed air branch pipe electromagnetic switch valve 7 is fixed by the time relay 11
Shi Kaiguan.
Rotating soot blowing blast cap 9 includes spray cap 91 and connecting tube 92, sprays cap 91 and connecting tube 92 is an integral structure and sprays cap
91 in the top of connecting tube 92, and spray cap 91 contacts with connecting tube 92, cooperates by spraying cap lower platen 93, sprays cap lower platen 93 and connects
Ball 94 is provided between adapter tube 92.Compressed air enters in spray cap 91 via compressed air branch pipe 4 and connecting tube 92, sprays cap 91
It is lifted up under compressed air effect, is contacted by spray cap lower platen 93 and ball 94 with connecting tube 92, spray and be arranged on cap 91
There is the spout 13 to form an angle with its diameter of section, compressed air disturbs dust stratification from the ejection of spout 13, while spraying cap
91 are rotated under the reaction force of compressed air, all can fluidize by the dust stratification for spraying 91 surrounding of cap, in the disturbance of flue gas
Lower flying dust is pulled away, and solves the problems, such as that 1 dust stratification of flue is accumulated.
Flue 1 includes flue inner wall 12, and aperture is offered on the lower wall surface of flue inner wall 12, and rotation soot blowing blast cap 9 passes through
Aperture protrudes into the inside of flue 1 and welded seal is fixed, and the outside of flue 1 is provided with reinforcement otic placode, and rotation soot blowing blast cap 9 passes through
Reinforce the outside that otic placode is fixed on flue 1, the center of spout 13 is L, L >=85mm away from the distance of flue inner wall 12.
Flue 1 include slope section A and horizontal segment B, slope section A and horizontal segment B in be mounted on compressed air branch pipe 4, and
The installation direction of compressed air branch pipe 4 is vertical with the flow direction of high-temperature flue gas in flue 1.The boundary of slope section A and horizontal segment B
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 denitration entrance flue gas flow direction from be horizontally diverted vertically to
On, the flue 1 of the economizer exit level flue 1 area sudden expansion vertical to denitration entrance in addition causes the product of denitration gas approach 1
Ash causes denitration inlet flow rate uneven, to influence denitration efficiency and the big problem of amount of ammonia slip, avoids conventional soot blower
The leakage of flue 1 caused by long-time soot blowing is washed away, while because cleaning is accumulated when also saving each shutdown more due to dust stratification at this
The a large amount of manpowers and time that ash need to expend.The present embodiment uses 0.5 ~ 1.0MPa of compressed air, passes through purge time control system
Purging switch discontinuity time switch is realized, to realize that discontinuity timing purges in denitration gas approach, and deposition flying dust is disturbed
It is taken away after dynamic fluidisation by flue gas, prevents a large amount of depositions of a large amount of flying dusts at this, cause SCR inlet mass flow discrepancy even, influence to take off
Nitre efficiency and amount of ammonia slip are big, while individual power plants being avoided to carry out 1 breakage of flue caused by soot blowing using stationary sootblower, guarantee
The safe and stable operation of unit.
It is any to be familiar with although the present invention is disclosed as above with embodiment, its protection scope being not intended to limit the invention
The technical staff of this technology changes and retouches made without departing from the spirit and scope of the invention, should belong to this hair
Bright protection scope.
Claims (7)
1. a kind of rotation soot blower for improving denitration gas approach flow field uniformity, it is characterised in that: including compressed air mother
Manage (5), compressed air branch pipe (4), pressure gauge (8) and rotation soot blowing blast cap (9), the compressed air main pipe (5) and station-service
Compressed air pipe connection, the compressed air branch pipe (4) are connected to the compressed air main pipe (5), the rotation soot-blowing wind
Cap (9) is connected to the compressed air branch pipe (4), and the pressure gauge (8) is mounted on the compressed air branch pipe (4), and institute
It states pressure gauge (8) and the rotation soot blowing blast cap (9) to set gradually along compressed air flowing direction, the rotation soot blowing blast cap
(9) it being installed in flue (1), and is provided with deflector (3) in flue (1), the deflector (3) connect with downstream flue (2),
The flue (1), deflector (3) and downstream flue (2) are set gradually along flow of flue gas direction.
2. the rotation soot blower according to claim 1 for improving denitration gas approach flow field uniformity, it is characterised in that:
It further include compressed air main pipe manual switch valve (6), compressed air branch pipe electromagnetic switch valve (7), communication cable (10) and time
Relay (11), the compressed air main pipe manual switch valve (6) are installed on the compressed air main pipe (5), the compression
Air branch pipe electromagnetic switch valve (7) is installed on the compressed air branch pipe (4), the compressed air branch pipe electromagnetic switch valve
(7) it is connected by communication cable (10) with the time relay (11), the compressed air main pipe manual switch valve (6), institute
It states compressed air branch pipe electromagnetic switch valve (7), the pressure gauge (8) and rotation soot blowing blast cap (9) and flows direction along compressed air
It sets gradually.
3. the rotation soot blower according to claim 1 or 2 for improving denitration gas approach flow field uniformity, feature exist
In: the rotation soot blowing blast cap (9) includes that spray cap (91) and connecting tube (92), the spray cap (91) and connecting tube (92) are integrated
Formula structure and spray cap (91) connecting tube (92) top；Spout (13) are offered in spray cap (91).
4. the rotation soot blower according to claim 3 for improving denitration gas approach flow field uniformity, it is characterised in that:
The flue (1) includes flue inner wall (12), and aperture, the rotation soot blowing are offered on the lower wall surface of the flue inner wall (12)
Blast cap (9) protrudes into the inside of the flue (1) by aperture and welded seal is fixed, and is provided with and adds on the outside of the flue (1)
Strong otic placode, the outside that rotation soot blowing blast cap (9) is fixed on flue (1) by reinforcing otic placode, the center of the spout (13)
Distance away from flue inner wall (12) is L, L >=85mm.
5. the rotation soot blower according to claim 1 or 2 for improving denitration gas approach flow field uniformity, feature exist
Be in: the quantity of the compressed air branch pipe (4) it is multiple, be mounted on multiple rotation soot blowings on each compressed air branch pipe (4)
Blast cap (9).
6. the rotation soot blower according to claim 1 or 2 for improving denitration gas approach flow field uniformity, feature exist
In: the flue (1) includes slope section (A) and horizontal segment (B), is mounted in the slope section (A) and the horizontal segment (B)
The compressed air branch pipe (4), and the installation direction of the compressed air branch pipe (4) and the flue (1) interior high-temperature flue gas
Flow direction is vertical.
7. a kind of such as the rotation soot blower of any of claims 1-6 for improving denitration gas approach flow field uniformity
Ash-blowing method, it is characterised in that: the ash-blowing method is as follows: use 0.5 ~ 1.0MPa compressed air, pass through time relay
Device (11) realizes purging switch discontinuity time switch, to realize that the interior discontinuity timing of denitration gas approach (1) purges；Compression
Air is entered in rotation soot blowing blast cap (9) by compressed air main pipe (5) and compressed air branch pipe (4), in rotation soot blowing blast cap
(9) interior compressed air enters spray cap (91) by connecting tube (92), sprays from spout (13) disturb to dust stratification later, sprays cap
(91) it is rotated, the dust stratification fluidisation for spraying cap (91) surrounding is got up, in the disturbance of flue gas under the reaction force of compressed air
Lower flying dust is pulled away.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811347967.1A CN109458626A (en) | 2018-11-13 | 2018-11-13 | A kind of rotation soot blower and its ash-blowing method improving denitration gas approach flow field uniformity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811347967.1A CN109458626A (en) | 2018-11-13 | 2018-11-13 | A kind of rotation soot blower and its ash-blowing method improving denitration gas approach flow field uniformity |
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| CN109458626A true CN109458626A (en) | 2019-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811347967.1A Pending CN109458626A (en) | 2018-11-13 | 2018-11-13 | A kind of rotation soot blower and its ash-blowing method improving denitration gas approach flow field uniformity |
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Cited By (3)
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| CN110805918A (en) * | 2019-10-16 | 2020-02-18 | 华电电力科学研究院有限公司 | Device and method for blowing soot by using bypass flue gas |
| 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 |
| CN113819473A (en) * | 2021-09-18 | 2021-12-21 | 广东绿壳新能源有限公司 | Ash blockage preventing device for ash bucket under convection tube bundle of boiler |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110805918A (en) * | 2019-10-16 | 2020-02-18 | 华电电力科学研究院有限公司 | Device and method for blowing soot by using bypass flue gas |
| 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 |
| CN113819473A (en) * | 2021-09-18 | 2021-12-21 | 广东绿壳新能源有限公司 | Ash blockage preventing device for ash bucket under convection tube bundle of boiler |
| CN113819473B (en) * | 2021-09-18 | 2024-01-26 | 广东绿壳新能源有限公司 | Anti-ash blocking device for ash hopper under convection tube bundle of boiler |
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Application publication date: 20190312 |