CN204829875U - Two furnace fire burning furnace - Google Patents
Two furnace fire burning furnace Download PDFInfo
- Publication number
- CN204829875U CN204829875U CN201520540397.3U CN201520540397U CN204829875U CN 204829875 U CN204829875 U CN 204829875U CN 201520540397 U CN201520540397 U CN 201520540397U CN 204829875 U CN204829875 U CN 204829875U
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- CN
- China
- Prior art keywords
- furnace
- burning
- flue gas
- combustion
- waste heat
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- Expired - Fee Related
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- 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
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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- Incineration Of Waste (AREA)
Abstract
The utility model discloses a two furnace fire burning furnace, include the main furnace of burning and vice furnace of burning that link to each other through the smoke uptake pipe, burn main furnace and main furnace firegrate of the inside burning of installation respectively of vice furnace of burning and vice furnace of burning firegrate, vice furnace of burning connects the residual heat from flue gas room of seting up the chimney in the top through the flue, the indoor residual heat from flue gas ware of establishing of residual heat from flue gas, the inside cycle fluid water of filling of residual heat from flue gas ware, the main furnace that burns, the position of burning vice furnace and residual heat from flue gas room risees in proper order, and burns main furnace and burning vice furnace's bottom and set up respectively and fire the just right main furnace air intake of burning and burning vice furnace air intake of air intake grid in the burning furnace, installs on burn main furnace air intake and the burning vice furnace air intake to be used for controlling burn main furnace and the deputy furnace 2 valve of vice furnace intake of burning. The utility model provides high combustion efficiency reduces the fuel consumption, restraines NOX and generates.
Description
Technical field
The utility model relates to fuel combustion field, is specifically related to a kind of twin furnace combustion furnace.
Background technology
China's atmosphere pollution derives from coal burning produced pollution thing greatly, and China a large amount of scattered settlement common people adopt traditional coal-burning boiler at present, but the environmental pressure that faces of China is increasing in recent years, so strict restriction has been made to domestic fuel in urban, what have even forbids the anthracite that burns, optionally only has clean fuel as higher in natural gas equivalent place, so be badly in need of finding a kind of not only cheap but also the fuel of efficient low dirt.Blue charcoal (semicoke) is little by caking property or no adhesion, the product of high volatile coal after middle low temperature distillation.Yulin City is one of main blue charcoal place of production of China, is characterized in low-phosphorous, low-sulfur, low ash, golf calorific value and price is moderate.Therefore, blue charcoal can as some domestic fuels to the stricter city of environmental requirement.
But legacy equipment burns, blue charcoal has some problem following appearance: 1, when air abundance is excessive and air coefficient is larger, then burning velocity is very fast, and flue gas is short at residing time in furnace, and boiler coal consumption is comparatively large, easily generation pollutant NO
x.2, when fuel quantity sufficient excessive and air coefficient is less time, then has imperfect combustion C and CO and generate, therefore the efficiency of combustion of fuel is lower and have potential safety hazard.3, flame during blue charcoal burning is shorter, and combustion intensity during conventional boiler burning is not high.
Utility model content
The purpose of this utility model is for above-mentioned the problems of the prior art, a kind of Fuel Consumption of boiler that can make is provided to reduce, efficiency of combustion improves, solve the problem that combustion flame is short and combustion intensity is not high, increase the time of staying of high-temperature flue gas in stove, reduce imperfect combustion C and CO, suppress NO
xthe twin furnace combustion furnace of generation.
To achieve these goals, the technical scheme that the utility model twin furnace combustion furnace adopts is:
Comprise the burning main furnace chamber and burning secondary-furnace that are connected by uptake tube, burning main furnace chamber and burning secondary-furnace inside is install combustion main furnace chamber fire grate and burning secondary-furnace fire grate respectively, burning secondary-furnace connects by flue the flue gas waste heat recovery room that chimney is offered at top, flue gas waste heat recoverer is established in flue gas waste heat recovery indoor, and cycle fluid water is filled in flue gas waste heat recoverer inside; Burning main furnace chamber, the position of burning secondary-furnace and flue gas waste heat recovery room raises successively, and burning main furnace chamber offers the burning main furnace chamber air inlet just right with air intake grid in combustion furnace and the secondary-furnace air inlet that burns respectively with the bottom of burning secondary-furnace, burn main furnace chamber air inlet and burning secondary-furnace air inlet are provided with the air control valve for control combustion main furnace chamber and burning secondary-furnace intake.
Described burning main furnace chamber comprises the burner hearth of two parts up and down separated by burning main furnace chamber fire grate, and upper and lower two parts burner hearth is pyramidal structure and the two bottom surface connects.
Described burning secondary-furnace comprises the burner hearth of two parts up and down separated by burning secondary-furnace fire grate, and upper and lower two parts burner hearth is pyramidal structure and the two end face connects.
Described burning main furnace chamber and burning secondary-furnace top be install combustion main furnace chamber fire-sealing ring and burning secondary-furnace fire-sealing ring respectively.
Described air intake grid bottom is cold grey slag bucket.
Be connected with burning secondary-furnace bottom described flue gas waste heat recovery room, flue gas waste heat recoverer is arranged on the top of flue gas waste heat recovery room.
Just rightly with flue bottom described flue gas waste heat recovery room enter flue gas waste heat recovery locular wall face and be 40 ° and be obliquely installed.
Described flue gas waste heat recoverer is provided with and scrapes hawk.
Suppose that the area of burning main furnace chamber fire grate and burning secondary-furnace fire grate is respectively A
1and A
2, the area of burning main furnace chamber air inlet and burning secondary-furnace air inlet is respectively S
1and S
2, then S
1/ S
2=9A
1/ (1A
1+ 10A
2).
The heat exchanger tube of described flue gas waste heat recoverer adopts stagger arrangement or in-line arrangement.
Compared with prior art, the utility model twin furnace combustion furnace is by setting up burning secondary-furnace, and the fuel of burning secondary-furnace is few, and excess air coefficient is larger, C and CO that burning main furnace chamber does not burn completely can be burnt further completely, improve the efficiency of combustion of combustion furnace and reduce potential safety hazard.Burning main furnace chamber air inlet and burning secondary-furnace air inlet install the air control valve being used for control combustion main furnace chamber and burning secondary-furnace intake, fuel a large amount of in burning main furnace chamber is made to carry out oxygen debt burning by air control valve, burning main furnace chamber forms reproducibility combustion zone, is conducive to suppressing NO
xgeneration, simultaneously burning main furnace chamber burn rate can be made to slow down, fuel increases at residing time in furnace, and boiler oil consumption reduces.Traditional combustion stove is single burner hearth, when needing lower combustion intensity, ventilation can only be reduced, but reduction ventilation is then burnt insufficient, efficiency of combustion reduces, fuel consumption increases, and can generate a large amount of C and CO simultaneously and discharge with flue gas, and when the higher combustion intensity of needs, then can only by increasing ventilation, but ventilation increases, burning mean temperature raises, and can make the NO in combustion product
xincrease, the time of staying of fuel in stove reduces simultaneously, and the heating efficiency after fuel combustion is reduced, and fuel consumption increases.The burning main furnace chamber height of the utility model twin furnace combustion furnace, lower than the height of burning secondary-furnace, can solve blue charcoal combustion flame short, the problem that combustion intensity is not high.When needing combustion efficiency or the burning raw coal of high strength, being closed the air inlet of burning secondary-furnace by air control valve, then taking out air control valve and make the cracking of work in combination state, the combustion conditions of independent control combustion main furnace chamber.Twin furnace combustion furnace of the present utility model is particularly useful for the civilian burning to blue charcoal (semicoke).
Further, the burning main furnace chamber of the utility model twin furnace combustion furnace comprises the burner hearth of two parts up and down separated by burning main furnace chamber fire grate, upper and lower two parts burner hearth is pyramidal structure and the two bottom surface connects, this structure is conducive to the backflow of heat smoke and the heat radiation of furnace wall, plays the effect that fuel surely fires.
Further, the burning secondary-furnace of the utility model twin furnace combustion furnace comprises the burner hearth of two parts up and down separated by burning secondary-furnace fire grate, upper and lower two parts burner hearth is pyramidal structure and the two end face connects, adopt this inverted cone-shaped structure to be conducive to lengthening the time of staying of fuel in burning secondary-furnace, ensure Thorough combustion.
Accompanying drawing explanation
Fig. 1 overall structure schematic diagram of the present utility model;
The structural representation of Fig. 2 the utility model burner hearth;
The structural representation of Fig. 3 the utility model flue gas waste heat recovery room;
Fig. 4 the utility model scrapes the structural representation of hawk;
In accompanying drawing: 1-burns main furnace chamber; 2-burns secondary-furnace; 3-burning main furnace chamber fire grate; 4-burning secondary-furnace fire grate; 5-uptake tube; 6-flue; 7-flue gas waste heat recovery room; 8-flue gas waste heat recoverer; 9-scrapes hawk; 10-air intake grid; The cold grey slag bucket of 11-; 12-air control valve; 13-burning main furnace chamber air inlet; 14-burning secondary-furnace air inlet; 15-burning main furnace chamber fire-sealing ring; 16-burning secondary-furnace fire-sealing ring.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
See Fig. 1-4, the utility model twin furnace combustion furnace structurally comprises the burning main furnace chamber 1 and burning secondary-furnace 2 that are connected by uptake tube 5, burning main furnace chamber 1 and burning secondary-furnace 2 inside is install combustion main furnace chamber fire grate 3 and burning secondary-furnace fire grate 4 respectively, burning main furnace chamber 1 comprises the burner hearth of two parts up and down separated by burning main furnace chamber fire grate 3, upper and lower two parts burner hearth is pyramidal structure and the two bottom surface connects, burning secondary-furnace 2 comprises the burner hearth of two parts up and down separated by burning secondary-furnace fire grate 4, upper and lower two parts burner hearth is pyramidal structure and the two end face connects.Burning main furnace chamber 1 and burning secondary-furnace 2 top be install combustion main furnace chamber fire-sealing ring 15 and burning secondary-furnace fire-sealing ring 16 respectively.Connect flue gas waste heat recovery room 7 by flue 6 bottom burning secondary-furnace 2, be provided with flue gas waste heat recoverer 8 in flue gas waste heat recovery room 7, flue gas waste heat recoverer 8 is arranged on the top of flue gas waste heat recovery room 7, flue gas waste heat recoverer 8 is provided with and scrapes hawk 9.Flue gas waste heat recoverer 8 inside is filled with cycle fluid water, and the top of flue gas waste heat recovery room 7 offers chimney.Burning main furnace chamber 1, the position of burning secondary-furnace 2 and flue gas waste heat recovery room 7 raises successively, and just rightly with flue 6 bottom flue gas waste heat recovery room 7 enter flue gas waste heat recovery locular wall face and be 40 ° and be obliquely installed, burning main furnace chamber 1 offers the burning main furnace chamber air inlet 13 just right with air intake grid in combustion furnace 10 and the secondary-furnace air inlet 14 that burns respectively with the bottom of burning secondary-furnace 2, and the bottom of air intake grid 10 is cold grey slag bucket 11.
The dust stratification that the utility model flue gas waste heat recoverer 8 produces is removed by scraping hawk 9, and the lime-ash after burning falls into the cold grey slag bucket 11 of boiler bottom, and flue 6 is in flaring shape structure.Burning main furnace chamber air inlet 13 and burning secondary-furnace air inlet 14 are also provided with for the air control valve 12 of control combustion main furnace chamber 1 with burning secondary-furnace 2 intake.The heat exchanger tube of flue gas waste heat recoverer 8 adopts stagger arrangement or in-line arrangement, burning main furnace chamber fire-sealing ring 15 H lower than the level of burning secondary-furnace fire-sealing ring 16.If suppose that the area of burning main furnace chamber fire grate 3 and burning secondary-furnace fire grate 4 is respectively A
1and A
2, the area of burning main furnace chamber air inlet 13 and burning secondary-furnace air inlet 14 is respectively S
1and S
2, then S
1/ S
2=9A
1/ (1A
1+ 10A
2).
The fuel combustion method of the utility model twin furnace combustion furnace, comprises the steps:
Step one, the fuel in burning main furnace chamber 1 and burning secondary-furnace 2 is lighted respectively, add the blue carbon (semicoke) in burning main furnace chamber 1 and burning secondary-furnace 2 to uptake tube 5 position;
Step 2, after fuel reaches burning-point, reduce burning main furnace chamber 1 air intake, make the oxygen debt burning of burning main furnace chamber 1, simultaneously increase burning secondary-furnace 2 air intake, make burning secondary-furnace 2 oxygen-excess combustion; The flue gas that burning main furnace chamber 1 generates arrives at burning secondary-furnace 2 through uptake tube 5, makes imperfect combustion C, CO Thorough combustion;
The flue gas that step 3, burning secondary-furnace 2 produce enters flue gas waste heat recovery room 7 through flue 6, carries out heat exchange cooling, discharge finally by chimney in flue gas waste heat recovery room 7 with the working-medium water in flue gas waste heat recoverer 8.
Analyze the advantage imbody of the utility model twin furnace combustion furnace in the following areas:
1, the fuel of burning secondary-furnace 2 is few, and excess air coefficient is comparatively large, C and CO do not burnt completely can be burnt further completely, improve efficiency of combustion and also reduce potential safety hazard in burning main furnace chamber 1; 2, the fuel quantity burnt in main furnace chamber 1 is large, and what carry out is oxygen debt burning, makes to form reproducibility combustion zone, is conducive to suppressing NO
xgeneration; 3, the plane of burning main furnace chamber fire-sealing ring 15 H lower than the plane of burning secondary-furnace fire-sealing ring 16, can solve the problem that the short combustion intensity of blue charcoal combustion flame is not high; 4, the furnace wall of burning main furnace chamber 1 is connected by upper and lower two parts pyramidal structure bottom surface, and this structure is conducive to the backflow of heat smoke and the heat radiation of furnace wall, plays the effect that fuel surely fires; 5, the furnace wall of burning secondary-furnace 2 is connected by upper and lower two parts pyramidal structure end face, and this structure is conducive to lengthening the time of staying of fuel in burning secondary-furnace, ensures Thorough combustion.6, burning secondary-furnace air inlet 14 can be closed with air control valve 12 when needing the combustion efficiency of high strength or burning raw coal, then the control valve 12 that deflates makes the cracking of work in combination state, and then the combustion conditions of independent control combustion main furnace chamber 1.
Claims (10)
1. a twin furnace combustion furnace, it is characterized in that: comprise the burning main furnace chamber (1) and burning secondary-furnace (2) that are connected by uptake tube (5), install combustion main furnace chamber fire grate (3) and burning secondary-furnace fire grate (4) respectively of burning main furnace chamber (1) and burning secondary-furnace (2) inside, burning secondary-furnace (2) connects by flue (6) the flue gas waste heat recovery room (7) that chimney is offered at top, flue gas waste heat recoverer (8) is established in flue gas waste heat recovery room (7), cycle fluid water is filled in flue gas waste heat recoverer (8) inside, burning main furnace chamber (1), the position of burning secondary-furnace (2) and flue gas waste heat recovery room (7) raises successively, and burning main furnace chamber (1) offers the burning main furnace chamber air inlet (13) just right with air intake grid in combustion furnace (10) and the secondary-furnace air inlet (14) that burns respectively with the bottom of burning secondary-furnace (2), burn main furnace chamber air inlet (13) and burning secondary-furnace air inlet (14) are provided with the air control valve (12) for control combustion main furnace chamber (1) and burning secondary-furnace (2) intake.
2. twin furnace combustion furnace according to claim 1, it is characterized in that: described burning main furnace chamber (1) comprises the burner hearth of two parts up and down separated by burning main furnace chamber fire grate (3), and upper and lower two parts burner hearth is pyramidal structure and the two bottom surface connects.
3. twin furnace combustion furnace according to claim 1, it is characterized in that: described burning secondary-furnace (2) comprises the burner hearth of two parts up and down separated by burning secondary-furnace fire grate (4), and upper and lower two parts burner hearth is pyramidal structure and the two end face connects.
4. the twin furnace combustion furnace according to claim 1 or 2 or 3, is characterized in that: install combustion main furnace chamber fire-sealing ring (15) and burning secondary-furnace fire-sealing ring (16) respectively of described burning main furnace chamber (1) and burning secondary-furnace (2) top.
5. twin furnace combustion furnace according to claim 1, is characterized in that: air intake grid (10) bottom is cold grey slag bucket (11).
6. twin furnace combustion furnace according to claim 1, it is characterized in that: described bottom, flue gas waste heat recovery room (7) is connected with burning secondary-furnace (2), and flue gas waste heat recoverer (8) is arranged on the top of flue gas waste heat recovery room (7).
7. the twin furnace combustion furnace according to claim 1 or 6, is characterized in that: what bottom, described flue gas waste heat recovery room (7) and flue (6) were just right enter, and flue gas waste heat recovery locular wall face is 40 ° is obliquely installed.
8. the twin furnace combustion furnace according to claim 1 or 6, is characterized in that: described flue gas waste heat recoverer (8) is provided with and scrapes hawk (9).
9. twin furnace combustion furnace according to claim 1, is characterized in that: suppose that the area of burning main furnace chamber fire grate (3) and burning secondary-furnace fire grate (4) is respectively A
1and A
2, the area of burning main furnace chamber air inlet (13) and burning secondary-furnace air inlet (14) is respectively S
1and S
2, then S
1/ S
2=9A
1/ (1A
1+ 10A
2).
10. twin furnace combustion furnace according to claim 1, is characterized in that: the heat exchanger tube of described flue gas waste heat recoverer (8) adopts stagger arrangement or in-line arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520540397.3U CN204829875U (en) | 2015-07-23 | 2015-07-23 | Two furnace fire burning furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520540397.3U CN204829875U (en) | 2015-07-23 | 2015-07-23 | Two furnace fire burning furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204829875U true CN204829875U (en) | 2015-12-02 |
Family
ID=54687472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520540397.3U Expired - Fee Related CN204829875U (en) | 2015-07-23 | 2015-07-23 | Two furnace fire burning furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204829875U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105066106A (en) * | 2015-07-23 | 2015-11-18 | 榆林学院 | Dual-hearth combustion furnace and fuel combustion method |
-
2015
- 2015-07-23 CN CN201520540397.3U patent/CN204829875U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105066106A (en) * | 2015-07-23 | 2015-11-18 | 榆林学院 | Dual-hearth combustion furnace and fuel 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151202 Termination date: 20160723 |