CN205919317U - Coal fired boiler coal pulverizer gas recirculation system - Google Patents
Coal fired boiler coal pulverizer gas recirculation system Download PDFInfo
- Publication number
- CN205919317U CN205919317U CN201620757203.XU CN201620757203U CN205919317U CN 205919317 U CN205919317 U CN 205919317U CN 201620757203 U CN201620757203 U CN 201620757203U CN 205919317 U CN205919317 U CN 205919317U
- Authority
- CN
- China
- Prior art keywords
- flue gas
- coal
- flue
- pipe
- air
- 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.)
- Expired - Fee Related
Links
- 239000003245 coal Substances 0.000 title claims abstract description 71
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 69
- 239000003546 flue gas Substances 0.000 claims abstract description 69
- 239000007789 gas Substances 0.000 claims abstract description 26
- 235000019504 cigarettes Nutrition 0.000 claims abstract description 8
- 238000005259 measurement Methods 0.000 claims description 9
- 239000000779 smoke Substances 0.000 claims description 9
- 239000003517 fume Substances 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 5
- 239000010865 sewage Substances 0.000 claims description 5
- 230000008676 import Effects 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract 1
- 239000000843 powder Substances 0.000 description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 8
- 239000001301 oxygen Substances 0.000 description 8
- 229910052760 oxygen Inorganic materials 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 2
- 239000003830 anthracite Substances 0.000 description 2
- 239000002956 ash Substances 0.000 description 2
- 239000002817 coal dust Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000001717 pathogenic effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000002274 desiccant Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Air Supply (AREA)
Abstract
The utility model discloses a coal fired boiler coal pulverizer gas recirculation system who invents, including air heater, a wind system all, a coal economizer, the coal pulverizer, the coal breakage pipe, the shaft flue, its characterized in that follows the economizer exhanst gas outlet, flue gas pipeline is drawn forth to shaft flue both sides wall, and on the flue gas pipeline of both sides the volume of installing cigarette measuring device respectively, valve door baffle plate, the female pipe of the terminal inward -remittance flue gas of flue gas pipeline, go into intercommunication flue gas branch pipe between the one's intention as revealed in what one says coal pipe at female pipe of flue gas and coal pulverizer, an installation flue gas pipe valve door baffle plate on the flue gas branch pipe, branch pipe cigarette volume measuring device, and the on -line adjustment through branch pipe flue gas valve door baffle plate and a blast gate door baffle plate, realize getting into coal pulverizer exhaust gas volumn and an amount of wind cooperation proportion on -line control, the utility model discloses effectual, the practicality is strong.
Description
Technical field
This utility model is related to a kind of flue gas recirculation system, specifically a kind of coal-burning boiler coal pulverizer flue gas recirculation system
System.
Background technology
During coal-fired boiler combustion, fire box temperature and oxygen amount are the key factors producing nox, and oxygen amount affects
The temperature of burner hearth, when fire box temperature is more than 1500 DEG C, in the air nitrogen will oxidized generation nox, at the fuel fire initial stage, fire
Nitrogen decomposes in material and oxidation generate substantial amounts of nox.The nox producing in flue gas is exceeded, exacerbates the burden of denitrification apparatus,
Increase ammonia spraying amount, thus the ash being further exacerbated by air preheater blocks up phenomenon.Middle storage for burning anthracite and meager coal
The boiler of formula pulverized coal preparation system, draws flue gas from economizer exit both sides and heats coal dust to coal pulverizer, on the one hand can reduce heat primary air
Consumption, reduce primary wind and powder in oxygen amount, coal pulverizer can be improved simultaneously and go out one's intention as revealed in what one says powder temperature to more than 120 DEG C, be conducive to carrying
At the beginning of blast furnace hearth, gentle control boiler combustion high temperature, thus improving burning quality and reducing unburned combustible in fly ash, reduces the product of nox
Raw；On the other hand pulverized coal preparation system can be avoided to blow out problem, inquiry relevant information is learnt, when coal pulverizer inlet desiccant oxygen content
Less than 16%, pulverized coal preparation system would not Fire explosion.For reducing the generation of nox in boiler combustion process, reduce unburned carbon in flue dust,
Preferably stably burn, improve the ball type pulverizer system coal pulverizer safety in operation and outlet temperature, improve boiler operatiopn effect,
The invention discloses a kind of coal-burning boiler coal pulverizer flue gas recirculation system, in patent retrieval, do not find identical patent.
Content of the invention
A kind of coal-burning boiler coal pulverizer flue gas recirculation system that this utility model is invented, be for burning anthracite and
The boiler of meager coal, using economizer exit flue gas and the ball type pulverizer system coal pulverizer inlet pipeline pressure reduction, from economizer exit
Flue gas is drawn to coal pulverizer inlet pipeline in both sides, controls the usage ratio of flue gas and First air, improves and control coal pulverizer outlet
Wind powder temperature, reduces oxygen content in coal pulverizer and boiler wind powder.
A kind of coal-burning boiler coal pulverizer flue gas recirculation system that this utility model is invented, including air preheater, one
Secondary wind system, economizer, coal pulverizer, coal spout, vertical well gas flue is it is characterised in that from economizer exhanst gas outlet, vertical well gas flue two
Side wall draws flue, and is respectively mounted smoke measurement apparatus, spigot baffle on the flue of both sides, flue end
Import flue gas main pipe, between flue gas main pipe and coal pulverizer inlet wind coal pipe, connect flue gas arm, cigarette is installed on flue gas arm
Gas branch pipe spigot baffle, arm smoke measurement apparatus, and the regulation by arm gas fume valve baffle plate and First air spigot baffle,
Realize entering coal pulverizer exhaust gas volumn and the control of primary air flow mixing ratio.
A kind of coal-burning boiler coal pulverizer flue gas recirculation system that this utility model is invented, described primary air system bag
Include primary air fan, cold First air pipeline, cold First air spigot baffle, heat primary air pipeline, heat primary air spigot baffle, First air
Spigot baffle, First air pipeline, primary air measuring device, First air spigot baffle, First air arm, arm air measuring dress
Put, arm spigot baffle；First air pipeline one end connection primary air fan, other end connection wind coal pipe, First air pipeline is once
Fan outlet is divided into cold First air pipeline and heat primary air pipeline, and cold First air pipeline is connected with the outlet of heat primary air pipeline
Converge for First air pipeline again；First air spigot baffle, primary air measuring device are provided with First air pipeline, in heat one
It is respectively mounted heat primary air spigot baffle, cold First air spigot baffle on secondary wind pipeline, on cold First air pipeline；First air arm
One end is connected with primary air piping, and the other end is connected with coal spout, and arm apparatus for measuring air quantity, arm spigot baffle are arranged on
On First air arm.
A kind of coal-burning boiler coal pulverizer flue gas recirculation system that this utility model is invented, grinds according to each boiler controller system
The quantity of coal machine arranges the quantity of flue gas arm, flue gas main pipe is installed rush Xian's pipe joint, rush Xian's valve, blow-off line and
Sewage draining valve, during work, economizer exit flue gas passes through flue and enters flue gas mother through smoke measurement apparatus, spigot baffle
Pipe, flue gas realizes converging the balance with cigarette temperature in main pipe, flue gas again by main pipe, through each flue gas arm, flue gas arm valve
Baffle plate 22, arm smoke measurement apparatus, arm gas fume valve baffle plate 7, respectively enter the wind coal pipe of corresponding coal pulverizer inlet；
During primary air system work, First air sends into heat primary air pipeline and cold First air pipeline through primary air fan, enters heat primary air
The First air of pipeline adjusts cold First air spigot baffle and heat primary air spigot baffle through air preheater by flue gas, can
Realize the regulation of a First air pathogenic wind-warm of pipeline middle outlet, First air spigot baffle 5 realizes the regulation of First air total amount, First air
Spigot baffle 10, the cooperation of arm spigot baffle 12, play the air quantity adjustment effect entering coal spout, and primary air measuring fills
Put, arm apparatus for measuring air quantity each serves as air measuring effect；By arm gas fume valve baffle plate and First air spigot baffle
On-line control, realize entering coal pulverizer exhaust gas volumn and primary air flow mixing ratio On-line Control, thus realizing coal in coal pulverizer
In the drying of powder, primary wind and powder, oxygen content control and coal pulverizer go out control and the raising of one's intention as revealed in what one says powder temperature.During shutdown, cigarette can be carried out
Gas main pipe deashing, rushes Xian's pipe joint and connects water under high pressure, open and rush Xian's valve, and sewage draining valve, carries out flue gas main pipe and rushes Xian.
The positive beneficial effect that this utility model has is: by controlling the usage ratio of flue gas and First air, improves
Go out one's intention as revealed in what one says powder temperature with control coal pulverizer, reduce oxygen content in coal pulverizer and boiler wind powder, reduce nox and produce, reduce flying dust and contain
Carbon amounts, thus mitigate air preheater ash blocking up, improves coal-burning boiler operational efficiency and safety.Effect of the present invention is good, practicality
By force.
Brief description
Fig. 1 is the front view of the present invention
Fig. 2 is the a-a sectional view of the present invention
Specific embodiment
A kind of coal-burning boiler coal pulverizer flue gas recirculation system that this utility model is invented, including air preheater 27,
Primary air system, economizer 28, coal pulverizer 15, coal spout 13, vertical well gas flue 20 is it is characterised in that go out from economizer 28 flue gas
Mouthful, vertical well gas flue 20 both walls draw flue 26, and be respectively mounted on both sides flue 26 smoke measurement apparatus 25,
Spigot baffle 24, flue 26 end imports flue gas main pipe 23, in the wind coal pipe 14 of flue gas main pipe 23 and coal pulverizer 15 entrance
Between connect flue gas arm 8, on flue gas arm 8 install flue gas arm spigot baffle 22, arm smoke measurement apparatus 21, flue gas
Arm spigot baffle 7, and the regulation by arm gas fume valve baffle plate 22,7 and First air spigot baffle 5, realize entering coal-grinding
Machine exhaust gas volumn is controlled with primary air flow mixing ratio.
A kind of coal-burning boiler coal pulverizer flue gas recirculation system that this utility model is invented, described primary air system bag
Include primary air fan 1, cold First air pipeline 3, cold First air spigot baffle 2, heat primary air pipeline 29, heat primary air spigot baffle 4,
First air spigot baffle 5, First air pipeline 6, primary air measuring device 9, First air spigot baffle 10, First air arm 30,
Arm apparatus for measuring air quantity 11, arm spigot baffle 12；First air pipeline 6 one end connection primary air fan 1, other end connection wind coal
Pipe 14, First air pipeline 6 is divided into cold First air pipeline 3 and heat primary air pipeline 29, cold First air pipeline in primary air fan 1 outlet
3 are connected with the outlet of heat primary air pipeline 29 and converge for First air pipeline 6；Air-valve is provided with First air pipeline
Door guard plate 5 and 10, primary air measuring device 9, are respectively mounted heat one on heat primary air pipeline 29, on cold First air pipeline 3
Secondary air-valve door guard plate 4, cold First air spigot baffle 2；First air arm 30 one end is connected with primary air piping 6, the other end with fall
Coal pipe 13 is connected, and arm apparatus for measuring air quantity 11, arm spigot baffle 12 are arranged on First air arm 30.
A kind of coal-burning boiler coal pulverizer flue gas recirculation system that this utility model is invented, grinds according to each boiler controller system
The quantity of coal machine 15 arranges the quantity of flue gas arm 8, flue gas main pipe 23 is installed rush Xian's pipe joint 19, rush Xian's valve 18,
Blow-off line 16 and sewage draining valve 17, during work, economizer 28 exiting flue gas pass through flue 26 through smoke measurement apparatus
25th, spigot baffle 24 enters flue gas main pipe 23, and flue gas is realized converging the balance with cigarette temperature in flue gas main pipe 23, and flue gas is again by cigarette
Gas main pipe 23, through each flue gas arm 8, through flue gas arm spigot baffle 22, arm smoke measurement apparatus 21, arm gas fume valve
Baffle plate 7, respectively enters the wind coal pipe 14 of corresponding coal pulverizer inlet；During primary air system work, First air is through primary air fan 1
Send into heat primary air pipeline 29 and cold First air pipeline 3, the First air entering heat primary air pipeline 29 is through air preheater 27 quilt
Flue gas, adjust cold First air spigot baffle 2 and heat primary air spigot baffle 4, achievable First air pipeline 6 middle outlet is once
The regulation of pathogenic wind-warm, First air spigot baffle 5 can achieve the regulation of First air total amount, First air spigot baffle 10, manifold valve door shield
The cooperation of plate 12, plays the air quantity adjustment effect entering coal spout, primary air measuring device 9, arm apparatus for measuring air quantity 11
Each serve as air measuring effect；By the on-line control of arm gas fume valve baffle plate 22,7 and First air spigot baffle 5, realize
Enter coal pulverizer exhaust gas volumn and primary air flow mixing ratio On-line Control, thus realizing the drying of coal dust, First air in coal pulverizer
In powder, oxygen content control and coal pulverizer go out control and the raising of one's intention as revealed in what one says powder temperature.During shutdown, flue gas main pipe 23 deashing can be carried out, punching
Xian's pipe joint 19 connects water under high pressure, opens and rushes Xian's valve 18, and sewage draining valve 17, carries out flue gas main pipe 23 and rushes Xian.
Claims (3)
1. a kind of coal-burning boiler coal pulverizer flue gas recirculation system, including air preheater, primary air system, economizer, coal-grinding
Machine, coal spout, vertical well gas flue it is characterised in that from economizer exhanst gas outlet, vertical well gas flue both walls draw flue, and
Smoke measurement apparatus, spigot baffle are respectively mounted on the flue of both sides, flue end imports flue gas main pipe, female in flue gas
Pipe connects flue gas arm between coal pulverizer inlet wind coal pipe, installs flue gas arm spigot baffle, arm cigarette on flue gas arm
Measuring device, and the on-line control by arm gas fume valve baffle plate and First air spigot baffle (5), realize entering coal pulverizer
Exhaust gas volumn and primary air flow mixing ratio On-line Control.
2. a kind of coal-burning boiler coal pulverizer flue gas recirculation system according to claim 1 it is characterised in that: according to each
The quantity of boiler controller system coal pulverizer arranges the quantity of flue gas arm.
3. a kind of coal-burning boiler coal pulverizer flue gas recirculation system according to claim 1 it is characterised in that: female in flue gas
Install on pipe and rush Xian's pipe joint, rush Xian's valve, blow-off line and sewage draining valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620757203.XU CN205919317U (en) | 2016-07-11 | 2016-07-11 | Coal fired boiler coal pulverizer gas recirculation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620757203.XU CN205919317U (en) | 2016-07-11 | 2016-07-11 | Coal fired boiler coal pulverizer gas recirculation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205919317U true CN205919317U (en) | 2017-02-01 |
Family
ID=57873301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620757203.XU Expired - Fee Related CN205919317U (en) | 2016-07-11 | 2016-07-11 | Coal fired boiler coal pulverizer gas recirculation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205919317U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107855210A (en) * | 2017-12-08 | 2018-03-30 | 西安热工研究院有限公司 | Supercritical unit medium-speed pulverizer outlet temperature optimal control for energy saving system and method |
-
2016
- 2016-07-11 CN CN201620757203.XU patent/CN205919317U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107855210A (en) * | 2017-12-08 | 2018-03-30 | 西安热工研究院有限公司 | Supercritical unit medium-speed pulverizer outlet temperature optimal control for energy saving system and method |
| CN107855210B (en) * | 2017-12-08 | 2023-04-25 | 西安热工研究院有限公司 | Energy-saving optimal control system and method for outlet temperature of medium-speed coal mill of supercritical unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Building 103-3, building 15, Qilu cultural and creative base, No.101, Shunfeng Road, Jinan area, China (Shandong) pilot Free Trade Zone, Jinan City, Shandong Province Patentee after: Shandong AoMiao Technology Development Co.,Ltd. Address before: High tech Zone Xinyu South Road Ji'nan city Shandong province 250101 first Qilu Software Park building three Room 308 Patentee before: SHANDONG AONENG ELECTRIC POWER SCIENCE & TECHNOLOGY Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170201 |