CN103256612A - Coal-fired boiler shaft flue with sonic soot blowers - Google Patents
Coal-fired boiler shaft flue with sonic soot blowers Download PDFInfo
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- CN103256612A CN103256612A CN201310168494XA CN201310168494A CN103256612A CN 103256612 A CN103256612 A CN 103256612A CN 201310168494X A CN201310168494X A CN 201310168494XA CN 201310168494 A CN201310168494 A CN 201310168494A CN 103256612 A CN103256612 A CN 103256612A
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- acoustic wave
- boiler
- wave ash
- coal
- ash ejector
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- 239000004071 soot Substances 0.000 title abstract description 18
- 241000209094 Oryza Species 0.000 claims description 20
- 235000007164 Oryza sativa Nutrition 0.000 claims description 20
- 235000009566 rice Nutrition 0.000 claims description 20
- 238000003466 welding Methods 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 6
- 238000007789 sealing Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 24
- 239000000428 dust Substances 0.000 description 17
- 238000013517 stratification Methods 0.000 description 13
- 238000007664 blowing Methods 0.000 description 10
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 7
- 239000003546 flue gas Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
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Abstract
The invention relates to a coal-fired boiler shaft flue with sonic soot blowers and belongs to the technical field of coal-fired boilers. The coal-fired boiler shaft flue with the sonic soot blowers comprises heat exchangers, a plurality of pairs of primary pipes and the sonic soot blowers, wherein the pairs of primary pipes are evenly distributed along the cross section of a boiler, one end portions of each pair of primary pipes are opposite to each other and located in the center of the boiler, the other end portions of each pair of primary pipes extend out of the wall of the boiler respectively, and the end portions, extending out of the wall of the boiler, of the primary pipes are connected with steam supplying primary pipes outside the boiler in a welding mode. The heat exchangers and the pairs of primary pipes are installed in the shaft flue in a mutually spaced mode, and the primary pipes are fixed opposite to the heat exchangers through primary pipe supports. The sonic soot blowers are installed on the primary pipes through base pipes. The coal-fired boiler shaft flue has the advantages of being efficient, safe and energy-saving, promotes safety of the boiler, and can be free from daily tedious maintenance work. The sonic soot blowers are arranged in the boiler, and are free of rotating components and reliable in sealing.
Description
Technical field
The present invention relates to a kind of coal-burning boiler vertical well gas flue that has acoustic wave ash ejector, belong to the coal-burning boiler technical field.
Background technology
Power plant coal-burning boiler combusting coal fines produces a large amount of dust, these dust flow in the flue of boiler with flue gas, be furnished with a large amount of heat exchangers in the flue of boiler, these heat exchangers absorb heat heating water or steam, the air etc. wherein in the flue gas.Heat exchanger is intensive being arranged in the flue in groups in a row, when flowing through these heat exchangers, the flue gas that carries dust will form a large amount of dust stratifications thereon, a large amount of existence of dust stratification will cause the exchange efficiency of heat exchanger to descend, heat in the flue gas can not fully be absorbed, this will directly cause exhaust gas temperature to rise, cause boiler combustion efficiency to descend, cost of electricity-generating increases, so power plant boiler must be installed slag-blowing equipmemt.Traditional slag-blowing equipmemt is stock, quarter butt soot blower, this equipment is the mechanical steam soot blower, stock or quarter butt soot blower directly clean the dust stratification on the heat exchanger by a large amount of high pressure, the high-temperature steams of ejection in the mechanical driving device screw-in boiler when blowing ash, this slag-blowing equipmemt has very big drawback and can not overcome, and brought economy, safety issue in some operations to the power plant.Major defect has the following aspects, and the one, the mismanagement meeting is stuck, blow the leakage heat exchanger.Because stock soot blower; stretch into boiler and be cantilever-shaped; therefore big in the process king-rod distortion of blowing ash; motor can not guarantee the smooth spinning in and out of stock under the too big situation of stock distortion, stuck fault often takes place or cause heat to continue to protect to move; the soot blower motor is quit work; sometimes soot blower can't be return, and blows grey steam and can not in time cut off, and causes the blowing out accident of leaking heat exchanger tube of blowing.The 2nd, the repair and maintenance workload is big.Because the environment temperature height, on-the-spot dust is more, needs each filling-up area of in time lubricated soot blower, and this work compartment time must rechecking, repair and maintenance workload burdensome.The 3rd, blow the damage heat exchanger.The pressure ratio of general stock steam sootblower is higher, steam flow is bigger, after blowing the damage wearing-resistant tile, will directly blow the damage heat exchanger, blow the heat exchanger that decreases behind the attenuate than the danger that is easier to take place booster, particularly the heat exchanger side of depth does not have wearing-resistant tile up and down, blow the pipeline that decreases behind the attenuate and must cut replacing, workload and cost are bigger.The 4th, it is big to blow ash consumption vapor volume, the operating cost height.To the boiler of 1025t/h, the boiler unit of 300MW blows ash twice every day, all soot blower air consumption annual operating and maintenance costs lattice more than 110 ten thousand of converting into money, and it is very large blowing ash consumption fate row cost.
Summary of the invention
The objective of the invention is to propose a kind of coal-burning boiler vertical well gas flue that has acoustic wave ash ejector, adopt existing array acoustic wave ash ejector, it is arranged on the coal-burning boiler flue heat interchanger, impelling dust stratification and pipeline to break away from, peel off the back flows away with flue gas, reach the purpose of removing dust stratification on the heat exchanger, to realize efficient, the energy-conservation and safety of coal-burning boiler.
The coal-burning boiler vertical well gas flue that has acoustic wave ash ejector that the present invention proposes comprises heat exchanger, many to mother's pipe and a plurality of acoustic wave ash ejector; How uniform along the boiler cross section to female pipe, an end of every pair of female pipe mutually relatively and be in the center of boiler, the other end of every pair of female pipe is stretched out the boiler wall separately, the outer steam supply mother pipe of the female tube end that stretches out the boiler wall and boiler is by being weldingly connected; Described heat exchanger and manyly mother is managed the space be installed in the vertical well gas flue, female pipe is by female pipe holder and heat exchanger relative fixed; Described a plurality of acoustic wave ash ejector is installed on female pipe by base tube.
In the above-mentioned coal-burning boiler vertical well gas flue, described acoustic wave ash ejector is arranged in pairs, each is M to the distance between two acoustic wave ash ejectors in the acoustic wave ash ejector, the span of M is 0.2-1 rice, distance between adjacent two pairs of acoustic wave ash ejectors is N, the span of N is 1.5-5 rice, and the end acoustic wave ash ejector is L apart from the distance of mother's pipe end, the span 0.5-4 rice of L.Angle between two acoustic wave ash ejectors in the every pair of acoustic wave ash ejector is θ, and the span of θ is 0 –, 180 degree.
Above-mentioned coal-burning boiler vertical well gas flue, acoustic wave ash ejector is in female Guan Shangcheng disposed at equal distance, and the distance between adjacent two acoustic wave ash ejectors is U, and the span of U is 1.5-5 rice, the end acoustic wave ash ejector is V apart from the distance of mother's pipe end, and the span of V is 0.2-1 rice.
The coal-burning boiler vertical well gas flue that has acoustic wave ash ejector that the present invention proposes is compared with traditional mechanical steam soot blower, has efficient, safe, energy-conservation characteristics.The array acoustic wave ash ejector adopts steam or compressed air-driven, produces the high sound intensity sound wave of stack.The high sound intensity sound wave can force the dust stratification vibration of amassing on pipeline, destroys the dynamic equilibrium of dust stratification, flows away with flue gas thereby impel dust stratification and pipeline to break away from, peel off the back, effectively removes dust stratification on the heat exchanger.Its advantage is:
1, vertical well gas flue of the present invention owing to adopt the mode of sound wave to blow ash, therefore can not blown the damage boiler tubing, compares with boiler tradition steam sootblower, has avoided the possibility of boiler tubing booster, the security that has improved boiler greatly.
2, vertical well gas flue of the present invention can be removed loaded down with trivial details line service from.Traditional mechanical type soot blower maintenance workload is big, the efficient that comes into operation is low, need have the special messenger to safeguard.And high sound intensity acoustic array formula acoustic wave ash ejector system need not mechanical component in the vertical well gas flue of the present invention, does not need substantially to safeguard that operating efficiency is 100% at system's run duration.
3, it is very good that vertical well gas flue of the present invention, furnace wall are blown the sealing in grey hole.The female pipe of this acoustic wave ash ejector group is arranged in the stove, pass furnace wall and outside and blow grey jet chimney welding, pass the partly complete and boiler setting seal welding by seal disc of boiler setting, solved the poorly sealed problem of traditional soot blower and boiler setting, reached the cleaner production purpose, this acoustic wave ash ejector adopts in the stove and arranges, no-rotary part, and sealing is reliable.
4, vertical well gas flue of the present invention has reduced large and small workload of repairing in the boiler safety inspection.And traditional steam sootblower is owing to blow the damage pipeline, and when each boiler maintenance checked, installing wearing-resistant tile additional was large and small focus of repairing, and can save this hard work after adopting array acoustic wave ash ejector system.
5, vertical well gas flue of the present invention, operating cost is extremely low.Compare with traditional stock soot blower, steam consumption quantity is its 5-10%, has saved operating cost greatly, when reaching the best and blowing grey effect, can save energy and reduce the cost.
Description of drawings
Fig. 1 is the structural representation that the present invention proposes to have the coal-burning boiler vertical well gas flue of acoustic wave ash ejector.
Fig. 2 is the assembly relation schematic diagram of female pipe and acoustic wave ash ejector among Fig. 1, acoustic wave ash ejector is wherein arranged in pairs, each is M to the distance between two acoustic wave ash ejectors in the acoustic wave ash ejector, the span of M is 0.2-1 rice, distance between adjacent two pairs of acoustic wave ash ejectors is N, the span of N is 1.5-5 rice, and the end acoustic wave ash ejector is L apart from the distance of mother's pipe end, the span 0.5-4 rice of L.
Fig. 3 is the left view of Fig. 2, represents the angle schematic diagram between two acoustic wave ash ejectors in a pair of acoustic wave ash ejector, and the angle of two acoustic wave ash ejectors is θ, and the span of θ is 0 –, 180 degree.
Fig. 4 is the another kind of assembly relation schematic diagram of female pipe and acoustic wave ash ejector, acoustic wave ash ejector wherein is in female Guan Shangcheng disposed at equal distance, wherein, distance between adjacent two acoustic wave ash ejectors is U, the span of U is 1.5-5 rice, the end acoustic wave ash ejector is V apart from the distance of mother's pipe end, and the span of V is 0.2-1 rice.
Among Fig. 1-Fig. 4, the 1st, vertical well gas flue, the 2nd, heat exchanger, the 3rd, female pipe, the 4th, base tube, the 5th, acoustic wave ash ejector, the 6th, female pipe holder, the 7th, female pipe passes the outer seal disc of boiler in the stove, and the 8th, the female pipe of the outer steam supply of boiler connects with female pipe welding in the stove that passes furnace wall.
The specific embodiment
The coal-burning boiler vertical well gas flue that has acoustic wave ash ejector that the present invention proposes, its structure comprise heat exchanger 2, many mother are managed 3 and a plurality of acoustic wave ash ejector 5 as shown in Figure 1.Many mother is managed 3 uniform along the boiler cross section, an end of every pair of female pipe mutually relatively and be in the center of boiler, the other end of every pair of female pipe is stretched out the boiler wall separately, the outer steam supply of the female tube end that stretches out the boiler wall and boiler is female manages 8 by being weldingly connected.Heat exchanger 2 and manyly mother is managed 3 spaces be installed in the vertical well gas flue 1, female pipe 3 is by female pipe holder 6 and heat exchanger 2 relative fixed.A plurality of acoustic wave ash ejectors 5 are installed on female pipe 3 by base tube 4.
Acoustic wave ash ejector in the coal-burning boiler vertical well gas flue of the present invention can be arranged on female pipe in pairs, as shown in Figure 2, each is M to the distance between two acoustic wave ash ejectors in the acoustic wave ash ejector, and the span of M is 0.2-1 rice, and the distance between adjacent two pairs of acoustic wave ash ejectors is N, the span of N is 1.5-5 rice, the end acoustic wave ash ejector is L apart from the distance of mother's pipe end, and the span 0.5-3 rice of L is in one embodiment of the present of invention, the value of M is 0.3 meter, and the value of N is 1.5 meters.Between two acoustic wave ash ejectors in the every pair of acoustic wave ash ejector, angle can be arranged, as shown in Figure 3, angle is θ, and the span of θ is 0 –, 180 degree, in one embodiment of the present of invention, the value of θ is 90 degree, when angle theta is 0, represent all acoustic wave ash ejectors facing one direction, but not equidistant mutually between the acoustic wave ash ejector.
Acoustic wave ash ejector in the coal-burning boiler vertical well gas flue of the present invention also can become disposed at equal distance on female pipe, as shown in Figure 4, distance between adjacent two acoustic wave ash ejectors is U, the span of U is 1.5-5 rice, the end acoustic wave ash ejector is V apart from the distance of mother's pipe end, and the span of V is 0.2-1 rice, in one embodiment of the present of invention, the value of U is 1.5 meters, and the span of V is 0.5 meter.
In the coal-burning boiler vertical well gas flue of the present invention, every layer of symmetric arrangement has two pairs to six pairs female pipes on the cross section, and the acoustic wave ash ejector group is installed on female pipe, forms the acoustic wave ash ejector display, satisfies on the boiler flue cross section distribution requirement to acoustic wave device.
In the embodiments of the invention, the acoustic wave ash ejector of use is produced by the Beijing HuaTang ZhongDian Power Science Development Co., Ltd, and product type is SG-60.
The coal-burning boiler vertical well gas flue that has acoustic wave ash ejector that the present invention proposes adopts the array acoustic wave ash ejector, is arranged on the coal-burning boiler flue heat interchanger, and the array acoustic wave ash ejector adopts steam or compressed air-driven, produces the high sound intensity sound wave of stack.The high sound intensity sound wave can force the dust stratification vibration of amassing on pipeline, destroys the dynamic equilibrium of dust stratification, thereby impels itself and pipeline to break away from, peel off with flue gas and flow away, and reaches the purpose of dust stratification on the removing heat exchanger.
Mother's pipe in this coal-burning boiler vertical well gas flue, can be made by the high-temperature alloy steel pipe, temperature resistant range-50 ℃--1000 ℃, the area size that this mother's length of tube is arranged according to the coal-burning boiler heat exchanger is determined length, the diameter range of the female pipe 3 of high-temperature alloy is φ 40-φ 102, wall thickness thickness 3-10mm, this mother manages perforate.Perforate on this mother's pipe becomes uniform arrangement in upright arrangement or symmetry to be staggered, as top Fig. 2, Fig. 4.Embed connection base tube and welding in perforate, be used for installing high-frequency high voice and strong sound wave blower, the opening of pipe ends opening or an end adopts the welding of circular arc plug to block, and the welding process requirement one-level is welded.Every female pipe is gone up several acoustic wave ash ejectors is installed, constitute the acoustic wave device group, this acoustic wave device group connects by female pipe, end at female pipe feeds compressed air or superheated steam, drive the acoustic wave device group and send superposing type high sound intensity sound wave, this high strength sound wave is used for removing dust stratification on the coal-burning boiler heat exchanger by sound field, improves the boiler hot exchange efficiency.
Female pipe is as a kind of acoustic wave device group connecting tube of special use, layout is installed on the coal-burning boiler flue heat interchanger, each female pipe is gone up 2-20 acoustic wave ash ejector is installed, constitute one group, the needs that on coal-burning boiler flue heat interchanger, distribute according to sound field, some groups of acoustic wave device groups of symmetrical or asymmetric layout, every group of acoustic wave device adopts special-purpose bracing frame to support.
Power plant coal-burning boiler heat exchanger has high temperature superheater, low temperature superheater, economizer, air preheater, and the female pipe among the present invention is arranged in the space between each heat exchanger, according to the principle that sound field distributes, and what of reasonable Arrangement group number.Acoustic wave device arrangement on female pipe and the female pipe is a kind of distinctive acoustic wave ash ejector mounting means, uses it for power plant coal-burning boiler heat exchanger, can remove collecting ash, has improved the heat exchanger effectiveness of boiler, reaches purpose of energy saving.
Claims (4)
1. a coal-burning boiler vertical well gas flue that has acoustic wave ash ejector is characterized in that this vertical well gas flue comprises heat exchanger, many to mother's pipe and a plurality of acoustic wave ash ejector; How uniform along the boiler cross section to female pipe, an end of every pair of female pipe mutually relatively and be in the center of boiler, the other end of every pair of female pipe is stretched out the boiler wall separately, the outer steam supply mother pipe of the female tube end that stretches out the boiler wall and boiler is by being weldingly connected; Described heat exchanger and manyly mother is managed the space be installed in the vertical well gas flue, female pipe is by female pipe holder and heat exchanger relative fixed; Described a plurality of acoustic wave ash ejector is installed on female pipe by base tube.
2. coal-burning boiler vertical well gas flue as claimed in claim 1, it is characterized in that wherein said acoustic wave ash ejector arranges in pairs, each is M to the distance between two acoustic wave ash ejectors in the acoustic wave ash ejector, the span of M is 0.2-1 rice, distance between adjacent two pairs of acoustic wave ash ejectors is N, the span of N is 1.5-5 rice, and the end acoustic wave ash ejector is L apart from the distance of mother's pipe end, the span 0.5-3 rice of L.
3. vertical well gas flue as claimed in claim 2 is characterized in that the angle between two acoustic wave ash ejectors in every pair of acoustic wave ash ejector is θ, and the span of θ is 0 –, 180 degree.
4. coal-burning boiler vertical well gas flue as claimed in claim 1, it is characterized in that acoustic wave ash ejector is in female Guan Shangcheng disposed at equal distance, distance between adjacent two acoustic wave ash ejectors is U, the span of U is 1.5-5 rice, the end acoustic wave ash ejector is V apart from the distance of mother's pipe end, and the span of V is 0.2-1 rice.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310168494XA CN103256612A (en) | 2013-05-06 | 2013-05-06 | Coal-fired boiler shaft flue with sonic soot blowers |
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| CN201310168494XA CN103256612A (en) | 2013-05-06 | 2013-05-06 | Coal-fired boiler shaft flue with sonic soot blowers |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433248A (en) * | 2013-08-28 | 2013-12-11 | 江苏惠能声波技术有限公司 | Acoustic wave dust removal device |
| CN107166414A (en) * | 2017-06-27 | 2017-09-15 | 南京常荣声学股份有限公司 | A kind of method and device of supercritical tower-type stove high-temperature surface Frequency Adjustable high sound strong sound wave decoking |
| CN109000273A (en) * | 2018-08-09 | 2018-12-14 | 合肥五凡工程设计有限公司 | Steam soot-blower and its working method in a kind of denitration burner hearth |
| CN111853842A (en) * | 2020-08-24 | 2020-10-30 | 岳阳永强机电设备有限公司 | Boiler soot blowing system based on high-sound-intensity medium-frequency sound wave soot blower |
| CN112696700A (en) * | 2021-01-11 | 2021-04-23 | 山西华唐凯盛科技有限公司 | Air preheater array soot blower |
| CN115111596A (en) * | 2022-07-06 | 2022-09-27 | 南京常荣声学股份有限公司 | Rotary sound wave soot blower |
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| JP2012226010A (en) * | 2011-04-15 | 2012-11-15 | Babcock Hitachi Kk | Sound wave generator, sound wave type deposit removal and suppression device using the same, sound wave type soot blower device, heat transfer equipment, exhaust gas processor, industrial equipment, method for operating sound wave generator, and method for operating heat transfer equipment |
| CN203309917U (en) * | 2013-05-06 | 2013-11-27 | 张晨 | Coal fired boiler vertical shaft flue provided with sound wave soot blowers |
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2013
- 2013-05-06 CN CN201310168494XA patent/CN103256612A/en active Pending
Patent Citations (6)
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| CN2267393Y (en) * | 1996-07-05 | 1997-11-12 | 李新民 | Spiral-flow type high efficiency sound wave device for blowing out dust or soot |
| CN2371455Y (en) * | 1999-03-31 | 2000-03-29 | 中国科学院广州能源研究所 | Air impulse soot blower |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433248A (en) * | 2013-08-28 | 2013-12-11 | 江苏惠能声波技术有限公司 | Acoustic wave dust removal device |
| CN107166414A (en) * | 2017-06-27 | 2017-09-15 | 南京常荣声学股份有限公司 | A kind of method and device of supercritical tower-type stove high-temperature surface Frequency Adjustable high sound strong sound wave decoking |
| CN109000273A (en) * | 2018-08-09 | 2018-12-14 | 合肥五凡工程设计有限公司 | Steam soot-blower and its working method in a kind of denitration burner hearth |
| CN109000273B (en) * | 2018-08-09 | 2019-11-26 | 陈美玲 | Steam soot-blower and its working method in a kind of denitration burner hearth |
| CN111853842A (en) * | 2020-08-24 | 2020-10-30 | 岳阳永强机电设备有限公司 | Boiler soot blowing system based on high-sound-intensity medium-frequency sound wave soot blower |
| CN112696700A (en) * | 2021-01-11 | 2021-04-23 | 山西华唐凯盛科技有限公司 | Air preheater array soot blower |
| CN115111596A (en) * | 2022-07-06 | 2022-09-27 | 南京常荣声学股份有限公司 | Rotary sound wave soot blower |
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Application publication date: 20130821 |