CN203718753U - Composite combustion device - Google Patents
Composite combustion device Download PDFInfo
- Publication number
- CN203718753U CN203718753U CN201420020419.9U CN201420020419U CN203718753U CN 203718753 U CN203718753 U CN 203718753U CN 201420020419 U CN201420020419 U CN 201420020419U CN 203718753 U CN203718753 U CN 203718753U
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- CN
- China
- Prior art keywords
- coal
- combustion
- feeder
- grate
- burner
- 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
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 63
- 239000002131 composite material Substances 0.000 title abstract 8
- 239000003245 coal Substances 0.000 claims abstract description 49
- 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
- 150000001875 compounds Chemical class 0.000 claims description 29
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000006978 adaptation Effects 0.000 abstract 1
- 239000002817 coal dust Substances 0.000 description 10
- 230000008901 benefit Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 239000003818 cinder Substances 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002802 bituminous coal Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Landscapes
- Solid-Fuel Combustion (AREA)
- Combustion Of Fluid Fuel (AREA)
Abstract
The utility model discloses a composite combustion device. The composite combustion device comprises a combustion chamber, a hearth, a chain grate, a coal hopper, a grate coal feeder, a composite combustion coal feeder, a fan coal mill, a high-temperature flue gas pipeline, a cyclone burner and an air preheater, wherein the hearth is arranged in the combustion chamber, the chain grate is arranged in the combustion chamber and is located below the hearth, the grate coal feeder and the composite combustion coal feeder are respectively connected to the coal hopper, the fan coal mill is connected to the composite combustion coal feeder, the high-temperature flue gas pipeline is connected between the composite combustion coal feeder and the fan coal mill, the cyclone burner is connected to the fan coal mill, the air preheater is connected to the cyclone burner, the grate coal feeder is connected to the chain grate, the cyclone burner is connected to the hearth, and the high-temperature flue gas pipeline is also connected to the hearth. A composite combustion technology is capable of improving the adaptation of the chain grate to coal types, and enabling the chain grate and pulverized coal to assist each other and utilize each other in a combustion process, so that combustion efficiency is improved and the cost is reduced.
Description
Technical field
The utility model relates to denitrating flue gas process field, relates more specifically to a kind of compound combustion device.
Background technology
Chain-grate boiler is conventional combustion apparatus in industry, small power plant and several heating boiler.Chain-grate boiler is, by traveling-grate stoker, lump coal is delivered into a kind of boiler combustion mode that boiler furnace carries out grate firing: when boiler furnace reaches certain high temperature, the layer coal cinder on fire grate just understood ignition; Temperature is relatively higher, and its burn-out degree is better.But this equipment ignition condition is bad, suitable to use fugitive constituent high, the high-quality bituminous coal that calorific capacity is large.If coal changes, Coal Quality Decline, operating condition can worsen, and causes coal stove to be processed and thermal efficiency degradation.
Utility model content
The purpose of this utility model is to provide the high and cost-effective compound combustion device of a kind of efficiency of combustion.
To achieve these goals, the utility model provides a kind of technical scheme: a kind of compound combustion device, it comprises combustion chamber, be arranged on the burner hearth of inside, combustion chamber and be arranged on combustion chamber inner and be positioned at the traveling-grate stoker of burner hearth below, described compound combustion device also comprises coal bunker, the fire grate feeder being connected with coal bunker respectively and compound combustion feeder, the blower mill being connected with compound combustion feeder, be connected to the high-temperature flue gas pipeline between compound combustion feeder and blower mill, the turbulent burner being connected with blower mill and the air preheater being connected with turbulent burner, described fire grate feeder is connected on traveling-grate stoker, described turbulent burner is connected on burner hearth, described high-temperature flue gas pipeline is also connected on burner hearth.
Described turbulent burner is provided with two and be connected to the both sides of burner hearth.
The utility model also comprises coal bunker by described compound combustion device, the fire grate feeder being connected with coal bunker respectively and compound combustion feeder, the blower mill being connected with compound combustion feeder, be connected to the high-temperature flue gas pipeline between compound combustion feeder and blower mill, the turbulent burner being connected with blower mill and the air preheater being connected with turbulent burner, described fire grate feeder is connected on traveling-grate stoker, described turbulent burner is connected on burner hearth, described high-temperature flue gas pipeline is also connected on burner hearth, the utility model organically combines traveling-grate stoker and these two kinds different combustion systems of coal dust, in combustion process, coal dust is lighted by chain fire-gate grate, the thermal-flame that coal dust firing forms has improved fire box temperature, for catching fire, the coal seam on traveling-grate stoker provides abundant thermal source, changed the situation that chain furnace only relies on chimney arch heat radiation to ignite in the past, greatly improved the ignition condition of new coal on traveling-grate stoker, simultaneously, the grate of smooth combustion is again the reliable thermal source that breeze airflow catches fire, can guarantee that coal dust stably catches fire in time, it is good that compound combustion mode has not only retained traveling-grate stoker load adaptability, Load Regulation is advantage easily, and it is good to have in addition coal dust adaptability, the advantage that efficiency of combustion is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model compound combustion device.
In figure: combustion chamber 1, burner hearth 2, traveling-grate stoker 3, coal bunker 4, fire grate feeder 5, compound combustion feeder 6, blower mill 7, high-temperature flue gas pipeline 8, turbulent burner 9, air preheater 10.
The specific embodiment
As shown in Figure 1, the utility model discloses a kind of compound combustion device, it comprises combustion chamber 1, be arranged on the burner hearth 2 of inside, combustion chamber, be arranged on combustion chamber 1 inner and be positioned at the traveling-grate stoker 3 of burner hearth 2 belows, be arranged on the coal bunker 4 of 1 outside, combustion chamber, the fire grate feeder 5 being connected with coal bunker 4 respectively and compound combustion feeder 6, the blower mill 7 being connected with compound combustion feeder 6, be connected to the high-temperature flue gas pipeline 8 between compound combustion feeder 6 and blower mill 7, the turbulent burner 9 being connected with blower mill 7 and the air preheater 10 being connected with turbulent burner 9.
Described burner hearth 2 and traveling-grate stoker 3 adopt original device, need not transform, and save cost.On described burner hearth 2, explosion proof door (not shown) is also installed, improves security.
Described coal bunker 4 provides the coal energy for whole compound combustion device.
Described fire grate feeder 5 is connected on traveling-grate stoker 3, and being provides the coal energy for traveling-grate stoker 3 burnings.
Described compound combustion feeder 6 is to provide the coal energy for burner hearth 2 burnings.
Described blower mill 7 is for coal is made to coal dust.
Described high-temperature flue gas pipeline 8 is also connected on burner hearth 2, the high-temperature flue gas in burner hearth can be used for drying coal like this, then coal is delivered in blower mill 7, can improve like this utilization rate of coal.
Described turbulent burner 9 is connected on burner hearth 2.Turbulent burner of the present utility model is provided with two and be connected to the both sides of burner hearth 2, can improve like this temperature in stove.
Described air preheater 10 is blown into hot blast in turbulent burner 9, auxiliary its work.
The advantage of compound combustion device of the present utility model is as follows:
1. reduce chain fire-gate coal seam thickness, to improve the penetration power of a wind, make its wind coal can have better mixing contact, for the abundant burning of coal provides condition;
2. by turbulent burner, be sprayed onto in stove, make it enter conflagration after stove, and produce high temperature, improve temperature in stove, be equivalent to improve the Ji Wen of radiative heat transfer, simultaneously for the SNCR carrying out is processed temperature conditions is provided;
3. reduce fine breeze from chain fire-gate leakage, reduce and fly slag phosphorus content, the fine breeze that former spreader feeder is dished out because of temperature in stove low, can not catch fire fast, to such an extent as to be discharged from outside stove at the effect next part coal dust of air-introduced machine, some duff powder spills by traveling-grate stoker gap, row outside together with cinder, cause the increase (increase of unburned carbon in flue dust) of solid unburned heat loss, by increasing after turbulent burner, part coal is by coal pulverizer with after screening, fine breeze enters burner and sprays into burner hearth, coarse granule coal enters in stove by spreader feeder, reduced the throwing coal amount of spreader feeder, also just reduced the ratio that fine breeze leaks by fire grate,
4. make to move on the flame kernel height in burner hearth, improved the flame degree of filling of burner hearth, form an optimum burning situation;
5. chain-grate boiler adds coal dust compound burning technology, mainly to be strengthening stove combustion process, raising chain furnace coal adaptability, this technological synthesis the advantage of chain furnace and coal-powder boiler, by fire grate layer combustion and the optimum organization of coal dust suspension combustion, and make it auxiliary each other in combustion process, and utilize mutually, there is the double adaptability to load variations and coal type change;
6. adopt this technological transformation traveling-grate stoker, do not change furnace type structure, body of heater is substantially motionless, only to burner hearth, sprays into a small amount of coal dust, increases a set of small-sized fans coal mill straight blowing type milling system, small investment, and the duration is short, and transformation funds is generally recoverable about half a year.
Claims (2)
1. a compound combustion device, it comprises combustion chamber, be arranged on the burner hearth of inside, combustion chamber and be arranged on combustion chamber inner and be positioned at the traveling-grate stoker of burner hearth below, it is characterized in that: described compound combustion device also comprises coal bunker, the fire grate feeder being connected with coal bunker respectively and compound combustion feeder, the blower mill being connected with compound combustion feeder, be connected to the high-temperature flue gas pipeline between compound combustion feeder and blower mill, the turbulent burner being connected with blower mill and the air preheater being connected with turbulent burner, described fire grate feeder is connected on traveling-grate stoker, described turbulent burner is connected on burner hearth, described high-temperature flue gas pipeline is also connected on burner hearth.
2. compound combustion device as claimed in claim 1, is characterized in that: described turbulent burner is provided with two and be connected to the both sides of burner hearth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420020419.9U CN203718753U (en) | 2014-01-13 | 2014-01-13 | Composite combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420020419.9U CN203718753U (en) | 2014-01-13 | 2014-01-13 | Composite combustion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203718753U true CN203718753U (en) | 2014-07-16 |
Family
ID=51157899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420020419.9U Expired - Fee Related CN203718753U (en) | 2014-01-13 | 2014-01-13 | Composite combustion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203718753U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104566430A (en) * | 2015-01-14 | 2015-04-29 | 中国电力工程顾问集团华东电力设计院有限公司 | Coal pulverizing system of thermal power plant and capacity expansion method thereof |
| CN106196017A (en) * | 2016-08-29 | 2016-12-07 | 江苏华伦化工有限公司 | Chain grate boiler compound combustion control system and control method |
| CN106352325A (en) * | 2016-10-28 | 2017-01-25 | 华中科技大学 | Compound control system for nitrogen oxide discharge amount of grate-fired furnace |
| CN106369592A (en) * | 2016-11-07 | 2017-02-01 | 四川活氏锅炉节能环保有限公司 | Low-nitrogen combustion device and low-nitrogen combustion method |
-
2014
- 2014-01-13 CN CN201420020419.9U patent/CN203718753U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104566430A (en) * | 2015-01-14 | 2015-04-29 | 中国电力工程顾问集团华东电力设计院有限公司 | Coal pulverizing system of thermal power plant and capacity expansion method thereof |
| CN106196017A (en) * | 2016-08-29 | 2016-12-07 | 江苏华伦化工有限公司 | Chain grate boiler compound combustion control system and control method |
| CN106352325A (en) * | 2016-10-28 | 2017-01-25 | 华中科技大学 | Compound control system for nitrogen oxide discharge amount of grate-fired furnace |
| CN106369592A (en) * | 2016-11-07 | 2017-02-01 | 四川活氏锅炉节能环保有限公司 | Low-nitrogen combustion device and low-nitrogen combustion method |
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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: 20140716 Termination date: 20150113 |
|
| EXPY | Termination of patent right or utility model |