CN203024179U - Intelligent control system of pulverized coal burner - Google Patents
Intelligent control system of pulverized coal burner Download PDFInfo
- Publication number
- CN203024179U CN203024179U CN 201220626591 CN201220626591U CN203024179U CN 203024179 U CN203024179 U CN 203024179U CN 201220626591 CN201220626591 CN 201220626591 CN 201220626591 U CN201220626591 U CN 201220626591U CN 203024179 U CN203024179 U CN 203024179U
- Authority
- CN
- China
- Prior art keywords
- coal burner
- burner hearth
- burner
- pulverized coal
- control system
- 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 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 239000002817 coal dust Substances 0.000 claims description 15
- 238000005303 weighing Methods 0.000 claims description 14
- 238000007599 discharging Methods 0.000 claims description 5
- 238000005260 corrosion Methods 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 abstract description 2
- 239000000779 smoke Substances 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 description 13
- 238000005516 engineering process Methods 0.000 description 6
- 239000000446 fuel Substances 0.000 description 3
- 238000005457 optimization Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
Abstract
The utility model discloses an intelligent control system of a pulverized coal burner. The intelligent control system of the pulverized coal burner comprises the pulverized coal burner, a feed bin and a fan II. A weighting instrument is arranged on a discharge port of the feed bin, a feeder is arranged between the weighting instrument and a feeding pipeline, and a fan III is further communicated with the lower portion of a hearth through a supply air duct. A temperature sensor is arranged in the pulverized coal burner, a pressure sensor is further arranged on the inner wall of the hearth, a signal end of the temperature sensor and a signal end of the pressure sensor are respectively connected with an input end of a controller, and the output end of the controller is respectively connected with the fan, the weighting instrument and the feeder. When used, the intelligent control system of the pulverized coal burner not only achieves that air is supplied according to the need in a furnace and smoke temperature deviation at an outlet of the hearth is reduced, but also achieves the more important purpose that burning emission of NOx in the furnace is ultra-low, reduces environment pollution, and prevents slag-bonding and high-temperature corrosion from occurring while burning efficiency and steady burning performance are promoted.
Description
Technical field
The utility model relates to coal-burning boiler, particularly a kind of intelligence control system of coal burner.
Background technology
Coal burner is a kind of firing equipment, its operation principle is that pulverized coal air (wind) mixture and the needed Secondary Air of burning that coal dust preparation system is supplied with are injected burner hearth with finite concentration and speed respectively, realizes the device of stable ignition and burning under suspended state.Coal burner can make coal dust produce high temperature eddy current at short notice, have advantages of that burning is complete, heat utilization efficiency is high, eliminate flue dust, energy-efficient, when using as the heating water bag, the water bag is arranged on the center of burner hearth usually, and the water bag heats the water in the water bag at the heat that the burner hearth internal combustion produces by coal dust.The efficient burning technology of coal dust and low NOx combusting technology are two kinds of technology of contradiction each other, reducing NOx generates with discharging and is that at all the temperature in control combustion zone can not be too high, but low-temperature burning affects again the combustion rate of coal dust, and it is one of problem demanding prompt solution that application therefore how to coordinate these two technology makes it to reach comprehensive optimum efficiency.
Summary of the invention
The technical problem that the utility model solves is to provide a kind of growing amount that can either reduce Nox, can improve again the coal burner intelligence control system of coal combustion rate.
For solving the problems of the technologies described above, technical solution adopted in the utility model is:
The coal burner intelligence control system, comprise coal burner, be communicated with the feed bin of coal burner burner hearth and the blower fan II that is communicated with the coal burner roof of the furnace by the air supply duct II by charging line, described charging line also is communicated with the blower fan I that is used to charging line to send into a wind; The discharging opening of described feed bin is provided with the weighing instrument for the weighing coal dust, and the batcher that promising coal dust provides power is set between weighing instrument and charging line; The bottom of described burner hearth also is used to burner hearth to send into the blower fan III of three hot blasts by the connection of air supply duct III; Described inboard wall of burner hearth, furnace outlet, water contract out the mouth of a river and water bag water return outlet place is provided with respectively temperature sensor, also are provided with pressure sensor on inboard wall of burner hearth; Described temperature sensor is connected signal end and is connected respectively the input of controller with pressure sensor, the output of controller is connected with blower fan, weighing instrument and batcher respectively.
Owing to having adopted above technical scheme, the obtained technological progress of the utility model is:
The utility model is under the prerequisite that guarantees burner water bag supply water temperature, distinguish fuel metering amount, air output and air inducing amount by quantum particle swarm optimization, realize fractional combustion control, the required air capacity that is about to burn is divided into two-stage and sends into, burner hearth is divided into the two-stage combustion district, the roof of the furnace that is communicated with the air supply duct II is the first-stage burning district, and the lower furnace portion that is communicated with the air supply duct III is combustion zone, the second level.Fuel in the first-stage burning district first burns under the rich fuel condition of anoxic, make burning velocity and temperature reduce, thereby not only postponed combustion process, and reduced the reactivity that generates NOx in reducing atmosphere, suppressed NOx at this regional growing amount; In combustion zone, the second level, with three hot blasts input of burning use, become the oxygen-enriched combusting district, make coal dust be fully burned.Application of the present utility model has not only realized in stove as required air feed and has reduced the furnace outlet gas temperature deviation, the more important thing is the burning and exhausting of having realized the ultralow NOx of boiler, reduce environmental pollution when improving efficiency of combustion and combustion stability, prevent the generation of slagging scorification and high temperature corrosion phenomenon.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Wherein: 1. coal burner, 2. feed bin, 31. blower fan I, 32. the blower fan II, 33. blower fan III, 4. charging lines, 5. air supply duct II, 6. air supply duct III, 7. weighing instrument, 8. batcher, 9. temperature sensor, 10. pressure sensor, 11. controllers, 12. burner hearth, 13. water bags.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further elaborated.
The coal burner intelligence control system, its structure as shown in Figure 1.Comprise coal burner 1, feed bin 2, weighing instrument 7, batcher 8, blower fan, temperature sensor 9, pressure sensor 10 and controller 11.
Coal burner 1 comprises burner hearth 12 and water bag 13, and the water bag is arranged on the center of burner hearth, is used for carrying out with burner hearth the heat recirculated water heating that heat exchange will be contained in the water bag.
Feed bin 2 is used for holding coal dust, and weighing instrument 7 is arranged on the discharging opening of feed bin, is used for the coal dust amount that the weigh bin discharging opening is sent.The below of weighing instrument is provided with batcher 8, and batcher is sent coal dust into burner hearth by charging line 4.
In the present embodiment, blower fan is provided with three, is respectively blower fan I 31, blower fan II 32 and blower fan III 33.The blower fan I is communicated with charging line, is used for a wind is sent into powder feeding pipes; The blower fan II is communicated with the top of burner hearth by the air supply duct II, sends into burner hearth for the Secondary Air of the use of burning; The blower fan III is communicated with the bottom of burner hearth by the air supply duct III, for three hot blasts being sent into the bottom of burner hearth.
In the present embodiment, temperature sensor is provided with four altogether, lay respectively at inboard wall of burner hearth, furnace outlet, water and contract out the mouth of a river and water bag water return outlet place, being respectively used to monitor fire box temperature, burner hearth wind outlet temperature, water contracts out coolant-temperature gage, water bag return water temperature, and measured temperature is passed to controller in real time.Pressure sensor is arranged on inboard wall of burner hearth, for detection of the pressure in burner hearth, and institute's measuring pressure value is passed to controller in real time.
The output of controller connects respectively motor, weighing instrument and batcher, be used for passing through to regulate the duty of weighing instrument, dispenser, blower fan by quantum particle swarm optimization according to the temperature value that gathers and force value, further regulate coal dust amount, primary air flow, secondary air flow and three hot blasts of sending into burner hearth, fundamentally realize fractional combustion control, the growing amount that has namely suppressed Nox has improved again the combustion rate of coal dust.
Claims (1)
1. coal burner intelligence control system, comprise coal burner (1), be communicated with the feed bin (2) of coal burner burner hearth (12) and the blower fan II (32) that is communicated with coal burner burner hearth (12) top by air supply duct II (5) by charging line (4), described charging line (4) also is communicated with the blower fan I (31) that is used to charging line to send into a wind; It is characterized in that: the discharging opening of described feed bin (2) is provided with the weighing instrument (7) for the weighing coal dust, between weighing instrument (7) and charging line (4), promising coal dust is set the batcher of power (8) is provided; The bottom of described burner hearth also is used to burner hearth to send into the blower fan III (33) of three hot blasts by air supply duct III (6) connection; Described inboard wall of burner hearth, furnace outlet, Shui Bao (13) delivery port and water bag water return outlet place are provided with respectively temperature sensor (9), also are provided with pressure sensor (10) on inboard wall of burner hearth; Described temperature sensor is connected signal end and is connected respectively the input of controller (11) with pressure sensor, the output of controller (11) is connected with blower fan, weighing instrument and batcher respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220626591 CN203024179U (en) | 2012-11-23 | 2012-11-23 | Intelligent control system of pulverized coal burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220626591 CN203024179U (en) | 2012-11-23 | 2012-11-23 | Intelligent control system of pulverized coal burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203024179U true CN203024179U (en) | 2013-06-26 |
Family
ID=48648161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220626591 Expired - Fee Related CN203024179U (en) | 2012-11-23 | 2012-11-23 | Intelligent control system of pulverized coal burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203024179U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105042631A (en) * | 2015-07-10 | 2015-11-11 | 吴鹏 | Temperature control method and system for boiler |
| CN105605607A (en) * | 2016-03-02 | 2016-05-25 | 内蒙古金土环保科技有限公司 | Multi-section pipeline type pulverized coal combustor |
| CN106051784A (en) * | 2016-07-21 | 2016-10-26 | 杭州和利时自动化有限公司 | Combustion control method and device for incinerator |
| CN106123585A (en) * | 2016-08-22 | 2016-11-16 | 重庆市大龙窑炉制造有限公司 | A kind of tunnel cave coal feed system |
-
2012
- 2012-11-23 CN CN 201220626591 patent/CN203024179U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105042631A (en) * | 2015-07-10 | 2015-11-11 | 吴鹏 | Temperature control method and system for boiler |
| CN105605607A (en) * | 2016-03-02 | 2016-05-25 | 内蒙古金土环保科技有限公司 | Multi-section pipeline type pulverized coal combustor |
| CN105605607B (en) * | 2016-03-02 | 2018-09-21 | 内蒙古金土环保科技有限公司 | Multistage duct type coal burner |
| CN106051784A (en) * | 2016-07-21 | 2016-10-26 | 杭州和利时自动化有限公司 | Combustion control method and device for incinerator |
| CN106123585A (en) * | 2016-08-22 | 2016-11-16 | 重庆市大龙窑炉制造有限公司 | A kind of tunnel cave coal feed system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209470213U (en) | A kind of ammonia mixture swirl flow combustion system | |
| CN104180368A (en) | Medium-and-low temperature hot fume powder feeding type coal powder combustion device and combustion process thereof | |
| CN103644561B (en) | A kind of high-efficiency energy-saving biomass steam generator system | |
| CN110822418A (en) | Low temperature flue gas recirculation system and method for low NOX under low load of π-type boiler | |
| CN203024179U (en) | Intelligent control system of pulverized coal burner | |
| CN106168376B (en) | A kind of twin furnace coal dust gasification low nitrogen burning Industrial Boiler | |
| CN201787823U (en) | Thermal balance device for sintering waste heat power generation | |
| CN106871111B (en) | A compound denitrification system and method for a W flame boiler | |
| CN206094003U (en) | Realize that ultralow load safety ring of coal fired boiler protects degree of depth peak regulation device of operation | |
| CN208475369U (en) | Coal-burning boiler pulverized coal preparation system | |
| CN204420998U (en) | A kind of low NOx combustion apparatus from preheating and coal dust sectional combustion | |
| CN210638067U (en) | Stable combustion energy-saving efficiency-improving system for boiler of thermal power plant | |
| CN203115996U (en) | Hearth air intake adjusting device of biomass circulating fluidized bed boiler | |
| CN204165042U (en) | Middle Low Temperature Thermal flue gas powder feeding coal powder burner | |
| CN109827169B (en) | Boiler low-temperature flue gas recirculation combustion system and application method thereof | |
| CN204201880U (en) | flue gas recirculation control system | |
| CN102322634A (en) | Pulverized coal combustor capable of being ignited with little gasified oil | |
| CN207486788U (en) | A kind of circulating fluidized bed boiler of blending gas | |
| CN202305245U (en) | Multifunctional coal powder combustion demonstration comprehensive test bed | |
| CN206637602U (en) | A kind of W flame boiler composite denitration system | |
| CN205261620U (en) | A residual heat from flue gas device for burning of power plant boiler cinder | |
| CN201866758U (en) | Precell injection combustion biomass boiler | |
| CN204063065U (en) | Composite grate combustion apparatus | |
| CN203671587U (en) | Efficient energy-saving biomass boiler system | |
| CN211040940U (en) | Coal-fired boiler coupling biomass gas combustion device and combustion system arrangement mode thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130626 Termination date: 20151123 |