CN106196114A - A kind of Pulverized Coal fired Boiler Furnace soot blower - Google Patents
A kind of Pulverized Coal fired Boiler Furnace soot blower Download PDFInfo
- Publication number
- CN106196114A CN106196114A CN201610744432.2A CN201610744432A CN106196114A CN 106196114 A CN106196114 A CN 106196114A CN 201610744432 A CN201610744432 A CN 201610744432A CN 106196114 A CN106196114 A CN 106196114A
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- China
- Prior art keywords
- burner hearth
- tertiary air
- pipe
- soot blowing
- boiler
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J1/00—Removing ash, clinker, or slag from combustion chambers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
nullThe present invention relates to a kind of Pulverized Coal fired Boiler Furnace soot blower，It includes boiler (13)，Boiler (13) head is provided with burner (14)，Tertiary air import (1) it is provided with on burner (14)，Boiler (13) afterbody is disposed with cleaner unit (7)、Air-introduced machine (8) and chimney (9)，Tertiary air machine (11) is accessed between air-introduced machine (8) and chimney (9)，The outlet of tertiary air machine (11) meets tertiary air mother pipe (12)，Burner hearth tertiary air mother pipe (2) and soot blowing house steward (6) it is provided with in the burner hearth of boiler (13)，Tertiary air mother pipe (12) is connected with burner hearth tertiary air mother pipe (2) and tertiary air import (1) respectively，It is provided with burner hearth tertiary air on burner hearth tertiary air mother pipe (2) and is in charge of (3)，Soot blower for boiler hearth (4) it is provided with on soot blowing house steward (6).One Pulverized Coal fired Boiler Furnace soot blower of the present invention, it can solve the problem that blowing pipe faces the problem of high temperature melt in burner hearth, effectively reduces NO simultaneouslyxRaw emissions value.
Description
Technical field
The present invention relates to a kind of Pulverized Coal fired Boiler Furnace soot blower, be particularly well-suited to the soot blowing system of environment-protecting industrial pulverized-coal fired boiler
System, is mainly used in the purging of the burner hearth bottom flyash of boiler.
Background technology
It is the main body energy that the resources characteristic of the oil-poor few gas of China's richness coal determines coal, within the period that future is considerably long,
Coal will not change as the status of the main body energy.Along with research and development and the practice of China's more than ten years, the development of industrial coal powder boiler
Achieved with significant progress, industrial coal powder boiler, with high-quality, high activity cleaning coal dust as fuel, is the backup of natural gas boiler
Or succedaneum.Its essential attribute includes clean hygiene, and working environment is friendly, system total enclosing, and smokeless and dust runs and emits, simultaneously
Environmental protection and energy saving, boiler efficiency and discharge standard are suitable with natural gas boiler.This just determines industrial coal powder boiler must possess
Kind soot blower system, ash-slag disposal system closes the dust pollution avoided in conventional boiler lime-ash discharge process simultaneously.In combination with
The total NO of combustion processxMechanism of production, reduce NOxOriginal discharge concentration, to reach industrial coal powder boiler cleaning, environmental protection, efficiently
Advantage.
Patent documentation CN202938321U discloses the soot blower system of a kind of pulverized-coal fired boiler, by the soot blowing of pulverized-coal fired boiler with remove
Dirt, smoke evacuation disjunctor design, high-efficiency environment friendly.But the restriction of its structure causes burner hearth soot blowing, one-level boiler pair in implementation process
Flowing bundle soot blowing, the soot blowing at three positions of two grades of boiler convection tube banks are jetted in turn and are carried out successively, due to the temperature in burner hearth
Higher, the burner hearth soot blowing jet pipe 15 being arranged in burner hearth is after stopping soot blowing, and tube wall temperature loses the cooling of low-temperature flue gas, burner hearth
Central temperature reaches more than 1100 DEG C, even the heat resisting steel material of 25Ni20 also faces thawing.
Summary of the invention
The technical problem to be solved is to provide a kind of Pulverized Coal fired Boiler Furnace soot blowing dress for above-mentioned prior art
Putting, it can solve the problem that blowing pipe faces the problem of high temperature melt in burner hearth, effectively reduces NO simultaneouslyxRaw emissions value.
The present invention solves the technical scheme that the problems referred to above are used: a kind of Pulverized Coal fired Boiler Furnace soot blower, it includes
Boiler, described boiler head is provided with burner, and described burner is provided with tertiary air import, and described boiler tail passes through cigarette
Air pipe is sequentially connected with and is provided with cleaner unit, air-introduced machine and chimney, and the flue gas pipeline between described air-introduced machine and chimney passes through
Connecting line accesses tertiary air machine, and the air outlet of described tertiary air machine connects tertiary air mother pipe, left and right two in the burner hearth of described boiler
Side is respectively arranged with burner hearth tertiary air mother pipe and soot blowing house steward, and described burner hearth tertiary air mother manages section of burner hearth vertical with soot blowing house steward
Direction is arranged, described tertiary air mother's pipe is divided into two-way, and burner hearth tertiary air mother pipe is accessed on a road, and three times of burner are accessed on another road
Wind inlet, described burner hearth tertiary air mother manages horizontally disposed has burner hearth tertiary air to be in charge of, along water on described soot blowing house steward
Square to being provided with soot blower for boiler hearth.
Described soot blower for boiler hearth includes that burner hearth soot blowing mother manages, and described burner hearth soot blowing mother pipe is arranged in the horizontal direction, described stove
Being provided with burner hearth soot blowing jet pipe on thorax soot blowing mother's pipe, described burner hearth tertiary air is in charge of and is provided with burner hearth tertiary air arm, described
Burner hearth tertiary air arm is set in outside burner hearth soot blowing jet pipe.
Described burner hearth soot blowing jet pipe is interrupted soot blowing in burner hearth, and described burner hearth tertiary air arm continues to send in burner hearth three
Secondary wind.
Described burner hearth tertiary air arm and burner hearth soot blowing jet pipe top are provided with circular lid, and described circular lid diameter is big
Little identical with burner hearth tertiary air arm diameter, described burner hearth tertiary air arm and the one side of burner hearth soot blowing jet pipe or bilateral are all offered
Having square spray orifice, described square spray orifice to be positioned on the downside of circular lid, the square spray orifice on described burner hearth soot blowing jet pipe is less than burner hearth
Square spray orifice on tertiary air arm.
The control valve of correspondence it is connected to respectively between described burner hearth tertiary air mother pipe, soot blowing house steward, soot blower for boiler hearth.
Described burner hearth tertiary air arm, from burner hearth membrane wall band steel central aperture, seals with band steel and welds.
It is stainless steel that described burner hearth tertiary air arm and burner hearth soot blowing jet pipe are positioned at burner hearth interior section, is positioned at burner hearth
Outside is carbon steel material.
Compared with prior art, it is an advantage of the current invention that:
1, flue gas pipeline between air-introduced machine and the chimney after boiler tail house outlet is drawn low temperature (160 DEG C with
Under), clean flue gas as burning tertiary air, reduce burning NO by reducing burning excess oxygen quotientxGrowing amount；
2, flue gas pipeline between air-introduced machine and the chimney after boiler tail house outlet is drawn low temperature (160 DEG C with
Under), clean flue gas as burning tertiary air, reduce NO by reducing fire box temperaturexGrowing amount；
3, flue gas pipeline between air-introduced machine and the chimney after boiler tail house outlet is drawn low temperature (160 DEG C with
Under), the outside of clean flue gas parcel burner hearth soot blowing jet pipe, stop the gap of winding-up at burner hearth soot blowing jet pipe, reduce burner hearth and blow
The wall temperature of ash jet pipe, extends burner hearth soot blowing lance life；
4, burner hearth tertiary air arm, one side, burner hearth soot blowing jet pipe top or both sides have square injection hole, burner hearth soot blowing jet pipe top
Portion installs circular lid additional, and purging orientation, blowing force are concentrated, and square injection hole position is higher than membrane wall pipe highest point, it is to avoid soot blowing gas
Stream directly winding-up direct to heating surface tube causes pipe to damage；
5, soot blower is stainless steel inside burner hearth, is resistant to burner hearth high temperature；Burner hearth is outside is carbon steel material, saves material
Cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention a kind of Pulverized Coal fired Boiler Furnace soot blower.
Fig. 2 is the structural representation of soot blower for boiler hearth in Fig. 1.
Fig. 3 is the structural representation of burner hearth soot blowing jet pipe in Fig. 2.
Fig. 4 is the left view of Fig. 3.
Fig. 5 is the A-A sectional view of Fig. 3.
Wherein:
Burner tertiary air import 1
Burner hearth tertiary air mother's pipe 2
Burner hearth tertiary air is in charge of 3
Burner hearth tertiary air arm 3.1
Soot blower for boiler hearth 4
Burner hearth soot blowing mother's pipe 4.1
Burner hearth soot blowing jet pipe 4.2
Circular lid 4.3
Soot blowing house steward 6
Cleaner unit 7
Air-introduced machine 8
Chimney 9
Flue gas pipeline 10
Tertiary air machine 11
Tertiary air house steward 12
Boiler 13
Burner 14
Connecting line 15.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
As shown in Fig. 1 ~ Fig. 5, a kind of Pulverized Coal fired Boiler Furnace soot blower in the present embodiment, it includes boiler 13, described
Boiler 13 head is provided with burner 14, and described burner 14 is provided with tertiary air import 1, and described boiler 13 afterbody passes through cigarette
Air pipe 10 is sequentially connected with and is provided with cleaner unit 7, air-introduced machine 8 and chimney 9, the flue gas pipeline between described air-introduced machine 8 and chimney 9
Accessing tertiary air machine 11 by connecting line 15 on 10, the air outlet of described tertiary air machine 11 connects tertiary air mother's pipe 12, described pot
In the burner hearth of stove 13, the left and right sides is respectively arranged with burner hearth tertiary air mother's pipe 2 and soot blowing house steward 6, described burner hearth tertiary air mother's pipe 2
Burner hearth cross-wise direction vertical with soot blowing house steward 6 is arranged, described tertiary air mother's pipe 12 is divided into two-way, and it is female that burner hearth tertiary air is accessed on a road
Pipe 2, the tertiary air import 1 of another road access burner 14, horizontally disposed on described burner hearth tertiary air mother's pipe 2 have burner hearth
Tertiary air is in charge of 3, and horizontally disposed on described soot blowing house steward 6 have soot blower for boiler hearth 4；
Described soot blower for boiler hearth 4 includes burner hearth soot blowing mother's pipe 4.1, and described burner hearth soot blowing mother's pipe 4.1 is arranged in the horizontal direction, described
Being provided with burner hearth soot blowing jet pipe 4.2 on burner hearth soot blowing mother's pipe 4.1, described burner hearth tertiary air is in charge of on 3 and is provided with burner hearth tertiary air
Arm 3.1, described burner hearth tertiary air arm 3.1 is set in outside burner hearth soot blowing jet pipe 4.2；
The control valve of correspondence it is connected to respectively between described burner hearth tertiary air mother's pipe 2, soot blowing house steward 6, soot blower for boiler hearth 4；
Described burner hearth tertiary air arm 3.1, from burner hearth membrane wall band steel central aperture, seals with band steel and welds；
Described burner hearth tertiary air arm 3.1 and burner hearth soot blowing jet pipe 4.2 top are provided with circular lid 4.3, described circular lid
4.3 diameter are identical with burner hearth tertiary air arm 3.1 diameter, described burner hearth tertiary air arm 3.1 and burner hearth soot blowing jet pipe 4.2
One side or bilateral all offer square spray orifice, described square spray orifice is positioned on the downside of circular lid 4.3, described burner hearth soot blowing jet pipe
Square spray orifice on 4.2 is less than the square spray orifice on burner hearth tertiary air arm 3.1 so that the injection hole position of burner hearth soot blowing jet pipe
Higher than membrane wall pipe highest point, it is to avoid membrane wall pipe is directly jetted by soot blowing air-flow, it is to avoid soot blowing air-flow is to burner hearth membrane wall pipe
Damage.
It is stainless steel that described burner hearth tertiary air arm 3.1 and burner hearth soot blowing jet pipe 4.2 are positioned at burner hearth interior section, position
Outside in burner hearth is carbon steel material.
Sootblowing dielectric is the compressed air of about 0.6Mpa, and compressed air is with the setpoint frequency of 5-10min, to burner hearth bottom
Periodically jetting, winding-up frequency can adjust according to ash quantity.Lasting burner hearth tertiary air air-flow is to being in burner hearth hot environment
The burner hearth soot blowing jet pipe of discontinuous plays the effect of cooling down, and (sack cleaner goes out in low temperature (less than 160 DEG C) cleaning simultaneously
Suck dust quantity < 30mg/Nm3) flue gas as tertiary air, uniform even into burner hearth, fire box temperature field along length of flame direction,
Avoid localized hyperthermia, be possible not only to avoid Boiler Furnace slagging (burnt), heat transfer deterioration, and NO can be effectively reducedxGrowing amount, with coal
Powder Industrial Boiler " coal dust concentrated phase (catching fire) burning tissues, stable burning room's semi-gas burning tissues, burner hearth gentleness burning tissues "
Technological thought is perfectly in harmony.
Low temperature that flue gas pipeline between air-introduced machine and chimney after boiler tail house outlet is drawn (160 DEG C with
Under), clean flue gas distribute to burner hearth tertiary air arm through burner hearth tertiary air mother's pipe, burner hearth tertiary air arm is set in burner hearth
The outside of soot blowing jet pipe, is continuously fed to tertiary air in the gap of burner hearth soot blowing jet pipe stopping winding-up is to burner hearth, reduces burner hearth and blow
The wall temperature of ash jet pipe, extends burner hearth soot blowing lance life.
The flyash of burner hearth bottom is blown afloat to suspended state by burner hearth soot blowing jet pipe, and in burner hearth, negative-pressure air-flow is by flyash band
To the flow process at burner hearth rear portion, will collect in the dust stratification band together at other positions of boiler to the sack cleaner of boiler tail.
The flyash that industrial coal powder boiler produces is the raw materials for production that building materials enterprise is good, the flyash that pulverized-coal fired boiler produces
Enter Hui Ta through the air conveying dispatch of closed system after being collected by sack cleaner, can focus on and apply, not only dirty without secondary
Dye, and construct good Mode of Circular.
In addition to the implementation, present invention additionally comprises other embodiments, all employing equivalents or equivalence to replace
The technical scheme that mode is formed, all should fall within the scope of the hereto appended claims.
Claims (7)
1. a Pulverized Coal fired Boiler Furnace soot blower, it is characterised in that: it includes boiler (13), and described boiler (13) head is arranged
Having burner (14), described burner (14) is provided with tertiary air import (1), described boiler (13) afterbody passes through flue gas pipeline
(10) it is sequentially connected with and is provided with cleaner unit (7), air-introduced machine (8) and chimney (9), the cigarette between described air-introduced machine (8) and chimney (9)
Accessing tertiary air machine (11) by connecting line (15) on air pipe (10), the air outlet of described tertiary air machine (11) connects tertiary air
Female pipe (12), in the burner hearth of described boiler (13), the left and right sides is respectively arranged with burner hearth tertiary air mother pipe (2) and soot blowing house steward
(6), described burner hearth tertiary air mother pipe (2) and the vertical burner hearth cross-wise direction of soot blowing house steward (6) are arranged, described tertiary air mother manages (12)
Being divided into two-way, burner hearth tertiary air mother pipe (2) is accessed on a road, and the tertiary air import (1) of burner (14), described stove are accessed in another road
Thorax tertiary air mother pipe (2) is the most horizontally disposed has burner hearth tertiary air to be in charge of (3), along level side on described soot blowing house steward (6)
To being provided with soot blower for boiler hearth (4).
A kind of Pulverized Coal fired Boiler Furnace soot blower the most according to claim 1, it is characterised in that: described soot blower for boiler hearth
(4) including that burner hearth soot blowing mother manages (4.1), described burner hearth soot blowing mother pipe (4.1) arranges in the horizontal direction, and described burner hearth soot blowing mother manages
(4.1) being provided with burner hearth soot blowing jet pipe (4.2) on, described burner hearth tertiary air is in charge of on (3) and is provided with burner hearth tertiary air arm
(3.1), described burner hearth tertiary air arm (3.1) is set in burner hearth soot blowing jet pipe (4.2) outside.
A kind of Pulverized Coal fired Boiler Furnace soot blower the most according to claim 2, it is characterised in that: described burner hearth soot blowing jet pipe
(4.2) being interrupted soot blowing in burner hearth, described burner hearth tertiary air arm (3.1) continues to send into tertiary air in burner hearth.
A kind of Pulverized Coal fired Boiler Furnace soot blower the most according to claim 2, it is characterised in that: described burner hearth tertiary air props up
Pipe (3.1) and burner hearth soot blowing jet pipe (4.2) top are provided with circular lid (4.3), described circular lid (4.3) diameter and
Burner hearth tertiary air arm (3.1) diameter is identical, described burner hearth tertiary air arm (3.1) and the one side of burner hearth soot blowing jet pipe (4.2)
Or bilateral all offers square spray orifice, described square spray orifice is positioned at circular lid (4.3) downside, described burner hearth soot blowing jet pipe
(4.2) the square spray orifice on is less than the square spray orifice on burner hearth tertiary air arm (3.1).
A kind of Pulverized Coal fired Boiler Furnace soot blower the most according to claim 1, it is characterised in that: described burner hearth tertiary air is female
Pipe is connected to the control valve of correspondence respectively between (2), soot blowing house steward (6), soot blower for boiler hearth (4).
A kind of Pulverized Coal fired Boiler Furnace soot blower the most according to claim 2, it is characterised in that: described burner hearth tertiary air props up
Pipe (3.1), from burner hearth membrane wall band steel central aperture, seals with band steel and welds.
A kind of Pulverized Coal fired Boiler Furnace soot blower the most according to claim 2, it is characterised in that: described burner hearth tertiary air props up
It is stainless steel that pipe (3.1) and burner hearth soot blowing jet pipe (4.2) are positioned at burner hearth interior section, is positioned at burner hearth outside for carbon steel material
Matter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610744432.2A CN106196114B (en) | 2016-08-29 | 2016-08-29 | A kind of Pulverized Coal fired Boiler Furnace soot blower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610744432.2A CN106196114B (en) | 2016-08-29 | 2016-08-29 | A kind of Pulverized Coal fired Boiler Furnace soot blower |
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| CN106196114A true CN106196114A (en) | 2016-12-07 |
| CN106196114B CN106196114B (en) | 2018-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610744432.2A Active CN106196114B (en) | 2016-08-29 | 2016-08-29 | A kind of Pulverized Coal fired Boiler Furnace soot blower |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6164956A (en) * | 1997-02-11 | 2000-12-26 | Ge Energy & Environmental Research Corporation | System and method for removing ash deposits in a combustion device |
| US20040045489A1 (en) * | 2002-09-09 | 2004-03-11 | Aptech Engineering Services, Inc. | Method for reduction of slagging and fouling of the waterwalls and of the firebox and superheater and reheater of steam boilers with coal combustion |
| US7261046B1 (en) * | 2003-06-10 | 2007-08-28 | Aptech Engineering Services, Inc. | System and method of reducing pulverizer flammability hazard and boiler nitrous oxide output |
| CN202938321U (en) * | 2012-12-03 | 2013-05-15 | 唐山市金沙工贸有限公司 | Soot blower system of pulverized coal fired boiler |
| US20130244190A1 (en) * | 2010-09-29 | 2013-09-19 | Fortum Corporation | Oxygen combustion system and method for operating same |
| CN203571724U (en) * | 2013-12-10 | 2014-04-30 | 辽宁调兵山煤矸石发电有限责任公司 | 300MW CFB (circulating fluidized bed) boiler tail heated surface steam ash blowing device |
| CN105864748A (en) * | 2016-04-19 | 2016-08-17 | 上海理工大学 | Combined combustion system of chain boiler |
| CN206145692U (en) * | 2016-08-29 | 2017-05-03 | 江苏双良锅炉有限公司 | Pulverized coal boiler furnace soot blower |
-
2016
- 2016-08-29 CN CN201610744432.2A patent/CN106196114B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6164956A (en) * | 1997-02-11 | 2000-12-26 | Ge Energy & Environmental Research Corporation | System and method for removing ash deposits in a combustion device |
| US20040045489A1 (en) * | 2002-09-09 | 2004-03-11 | Aptech Engineering Services, Inc. | Method for reduction of slagging and fouling of the waterwalls and of the firebox and superheater and reheater of steam boilers with coal combustion |
| US7261046B1 (en) * | 2003-06-10 | 2007-08-28 | Aptech Engineering Services, Inc. | System and method of reducing pulverizer flammability hazard and boiler nitrous oxide output |
| US20130244190A1 (en) * | 2010-09-29 | 2013-09-19 | Fortum Corporation | Oxygen combustion system and method for operating same |
| CN202938321U (en) * | 2012-12-03 | 2013-05-15 | 唐山市金沙工贸有限公司 | Soot blower system of pulverized coal fired boiler |
| CN203571724U (en) * | 2013-12-10 | 2014-04-30 | 辽宁调兵山煤矸石发电有限责任公司 | 300MW CFB (circulating fluidized bed) boiler tail heated surface steam ash blowing device |
| CN105864748A (en) * | 2016-04-19 | 2016-08-17 | 上海理工大学 | Combined combustion system of chain boiler |
| CN206145692U (en) * | 2016-08-29 | 2017-05-03 | 江苏双良锅炉有限公司 | Pulverized coal boiler furnace soot blower |
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| Publication number | Publication date |
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| CN106196114B (en) | 2018-05-11 |
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