CN107033927B - A kind of coke oven combustion chamber flue structure of segmentally heating - Google Patents
A kind of coke oven combustion chamber flue structure of segmentally heating Download PDFInfo
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- CN107033927B CN107033927B CN201710467673.1A CN201710467673A CN107033927B CN 107033927 B CN107033927 B CN 107033927B CN 201710467673 A CN201710467673 A CN 201710467673A CN 107033927 B CN107033927 B CN 107033927B
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- combustion air
- flue
- combustion
- poor gas
- exports
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B21/00—Heating of coke ovens with combustible gases
- C10B21/10—Regulating and controlling the combustion
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B21/00—Heating of coke ovens with combustible gases
- C10B21/10—Regulating and controlling the combustion
- C10B21/18—Recirculating the flue gases
Abstract
The present invention relates to a kind of coke oven combustion chamber flue structures of segmentally heating, coke oven combustion chamber is made of multiple flues, every two flue forms a duplex flue, flue bottom sets combustion air outlet at bottom and poor gas outlet at bottom, and flue partition is exported along Gao Xiangshe multistage combustion air exports and multistage poor gas；Each section of combustion air exports in the multistage combustion air exports and the absolute altitude of each section of poor gas outlet in the outlet of multistage poor gas are all different, and the absolute altitude of final stage combustion air exports is higher than the absolute altitude of final stage poor gas outlet.The present invention achievees the purpose that inhibit NOx in flue combustion process to generate, by being defined to each section of combustion air exports and poor gas outlet height to the infeed amount of position and each section of combustion air and coal gas to meet higher environmental requirement.
Description
Technical field
The present invention relates to coke oven technical field more particularly to a kind of flue structures of re-heat room coke oven combustion chamber.
Background technique
Modern coking furnace shaft topmost is furnace roof, is combustion chamber and the carbonization chamber of alternate configuration, lower portion of furnace body under furnace roof
There is regenerative chamber and connect the chute area of regenerative chamber and combustion chamber, the bottom flue of each regenerative chamber lower part passes through exchange shutter and cigarette
Road connection.Flue is located in coke oven base or basic two sides, and chimney is led in flue end.Therefore coke oven is carbonized by three areas Shi Liang
Room, combustion chamber, regenerative chamber, chute area, furnace roof area and foundation composition.Combustion chamber is in carbonization chamber two sides, by multiple vertical fire
Road is constituted.Regenerative chamber is located at lower portion of furnace body, divides air regenerator and gas regenerator.
A pair of of duplex flue (deserve to be called respectively and fire, decline quirk) of every two flue composition is walked respectively in combustion chamber
Ascending air and down current are equipped at the top of each pair of duplex flue and cross over hole, and bottom is equipped with exhaust gas circulation hole, makes 2 vertical fire
Road is connected.From flue bottom enters the combustion air of flue, coal gas forms ascending air after diffusion combustion, rise gas
It flows through across hole and enters decline quirk as down current, down current, which enters ascending air through quirk bottom exhaust gas circulation hole, joins
With circulation.
With the transformation of modern mode of production, to coke oven, more stringent requirements are proposed, if production capacity is big, heating system resistance
Power is small, adjusts easy to control, low azo-cycle guarantor etc..The existing lower spray coke oven in China is to improve in flue height to homogeneous heating at present
Property, meet produce load requirement, use the modes such as height lamp cap, waste gas circulation and combustion-supporting gas segmentation supply, but is inhibiting
Still there is improved space in terms of NO_x formation in combustion process.
Summary of the invention
The present invention provides a kind of coke oven combustion chamber flue structures of segmentally heating, by each section of combustion air exports
It is defined with poor gas outlet height to the infeed amount of position and each section of combustion air and coal gas, reaches and inhibit flue burning
The purpose that NOx is generated in the process, to meet higher environmental requirement.
In order to achieve the above object, the present invention is implemented with the following technical solutions:
A kind of coke oven combustion chamber flue structure of segmentally heating, the coke oven combustion chamber are made of multiple flues, often
Two flues form a duplex flue, and flue bottom sets combustion air outlet at bottom and poor gas outlet at bottom, stand
Quirk partition wall is exported along Gao Xiangshe multistage combustion air exports and multistage poor gas；Each section in the multistage combustion air exports
Combustion air exports and the absolute altitude of each section of poor gas outlet in the outlet of multistage poor gas are all different, and the combustion-supporting sky of final stage
The absolute altitude of gas outlet is higher than the absolute altitude of final stage poor gas outlet.
Combustion air road and meager coal air flue are set in the flue partition, along height to combustion air road passes through multiple combustion-supporting
Air outlet slit is connected to flue, and meager coal air flue passes through multiple poor gas outlet flues, and combustion air exports and meager coal
Gas outlet is inclined upward, narrowed channel into flue.
The combustion air outlet at bottom, poor gas outlet at bottom, each section of combustion air exports and each section of poor gas outlet
Place sets flow regulator respectively.
The gas volume that the final stage poor gas outlet is fed is feed coal gas total amount 1%~50%, final stage
The combustion-supporting air quantity that combustion air exports are fed is to feed the 1%~50% of combustion air total amount, and guarantee that final stage is combustion-supporting
Ascending air overall air coefficient of excess above air outlet slit is greater than 1.
The multistage combustion air exports and the number of fragments that multistage poor gas exports are identical or different.
Compared with prior art, the beneficial effects of the present invention are:
1) each section of combustion air exports and poor gas outlet setting height are inconsistent in flue, to guarantee each section of burning
The case where process is reacted with the flammable solid/liquid/gas reactions of low concentration or excessive combustible gas with oxygen deprivation combustion air there is always excessive combustion air,
The combustion process for forming deep or light deviation in flue, to avoid the generation of coal gas Yu the quick vigorous combustion of combustion air；
2) segmentation feeds excessive combustion air or coal gas, can reduce the temperature of exhaust gas after upstream combustion, inhibits combustion
The generation of NOx during burning；
3) the 1~50% of the total gas volume of gas volume Zhan that the outlet of final stage poor gas is fed in flue, guarantees at this
Ascending air overall air coefficient of excess enables in flue high-temp waste gas residual reducing atmosphere restore and has generated less than 1
NOx, to reduce the NOx concentration in exhaust gas；The combustion-supporting air quantity that final stage combustion air exports are fed is that infeed is combustion-supporting
The 1%~50% of air total amount guarantees that ascending air overall air coefficient of excess is greater than 1 at this, makes remaining coal gas in flue
Completely burned can reduce the temperature of exhaust gas by superfluous combustion air, inhibit the generation of nitrogen oxides；
4) bias combustion, fuel-staged combustion and a variety of low nitrogen oxide burning modes of Researched of Air Staging Combustion Burning Pulverized Coal are realized, make to stand
The generation of NOx is effectively suppressed in every level-one combustion process in quirk.
Detailed description of the invention
Fig. 1 is the schematic diagram of the coke oven combustion chamber flue structure of segmentally heating of the present invention.
Fig. 2 is the A-A cross-sectional view in Fig. 1.
Fig. 3 is the B-B cross-sectional view in Fig. 1.
Fig. 4 is the C-C cross-sectional view in Fig. 1.
In figure: 1. flue, 2. flue partition, 3. rich gas brick gas passage, 4. meager coal air flue, 5. poor gas bottom goes out
It is combustion-supporting that 6. poor gas of mouth export 7. final stage poor gas outlet, 8. combustion air road, 9. combustion air outlet at bottom 10.
11. final stage combustion air exports 12. of air outlet slit cross over 13. exhaust gas circulation hole of hole
Specific embodiment
Specific embodiments of the present invention will be further explained with reference to the accompanying drawing:
As Figure 1-Figure 4, the coke oven combustion chamber flue structure of a kind of segmentally heating of the present invention, the coke oven combustion
It burns room to be made of multiple flues 1, every two flue 1 forms a duplex flue, and 1 bottom of flue sets combustion air bottom
Portion outlet 9 and poor gas outlet at bottom 5, flue partition 2 are exported along Gao Xiangshe multistage combustion air exports and multistage poor gas；
Each section of poor gas outlet 6 in each section of combustion air exports 10 and the outlet of multistage poor gas in the multistage combustion air exports
Absolute altitude be all different, and the absolute altitude of final stage combustion air exports 11 be higher than final stage poor gas outlet 7 absolute altitude.
Combustion air road 8 and meager coal air flue 4 are set in the flue partition 2, along height to combustion air road 8 passes through multiple
Combustion air exports 10 are connected to flue 1, and meager coal air flue 4 is connected to flue 1, and combustion air by multiple poor gas outlet 6
Outlet 10 and poor gas outlet 6 are inclined upward, narrowed channel into flue 1.
The combustion air outlet at bottom 9, poor gas outlet at bottom 5, each section of combustion air exports 10 and each section of poor gas
It exports and sets flow regulator at 6 respectively, by flow regulator or by setting gas vent area of section control appropriate
Each section gas flow processed.
The gas volume that the final stage poor gas outlet 7 is fed is feed coal gas total amount 1%~50%, final stage
The combustion-supporting air quantity that combustion air exports 11 are fed is to feed the 1%~50% of combustion air total amount, and guarantee that final stage helps
It fires the ascending air overall air coefficient of excess above air outlet slit and is greater than 1.
The multistage combustion air exports and the number of fragments that multistage poor gas exports are identical or different.
A kind of coke oven combustion chamber flue structure of segmentally heating of the present invention, 2 flues in duplex flue
Top by being connected to across hole 12, bottom is connected to by exhaust gas circulation hole 13；Mutual isolation is provided in flue partition 2
Combustion air road 8 and meager coal air flue 4, along flue 1 it is high to flue partition 2 on multistage combustion air be respectively set go out
Mouth, the outlet of multistage poor gas；Poor gas outlet at bottom 5 is arranged in 2 bottom of flue partition；The setting of rich gas brick gas passage 1 exists
The two sides of the flue partition 2 of exhaust gas circulation hole 13 are not opened up.
Each section of combustion-supporting gas outlet should meet the following conditions with exhaust gas circulation hole, the positional relationship across hole in flue:
1) highest point of the final stage combustion air exports 11 positioned at each section of combustion-supporting gas outlet 10 is (close to cross over 12, hole
Set), and it is higher than final stage poor gas outlet 7；
2) each section of poor gas outlet 6 is separately positioned on different height with each section of combustion air exports 10.
When coke oven is heated using poor gas or mixed gas, 1 bottom of flue is connected with coke oven chute, makes combustion air
It is fed in the combustion air road 8 on 1 bottom of flue and flue partition 2 simultaneously, part of combustion air is by combustion air
Outlet at bottom 9 sprays, remaining combustion air is sprayed by each section of combustion air exports 10 on flue partition 2.Poor gas or
Mixed gas feeds the meager coal air flue 4 on flue partition 2, and part of poor gas is sprayed by poor gas outlet at bottom 5, remaining
Poor gas by flue partition 2 each section of poor gas outlet 6 spray.In the present invention, final stage poor gas outlet 7 is always
Lower than final stage combustion air exports 11.
The exit gas flow that each combustion air exports 9,10,11 and each poor gas export 5,6,7 is adjusted by flow respectively
Device controls or is arranged appropriate outlet stream section control.In coke oven production heating process, adjusts and respectively go out in flue 1
The coal gas and combustion-supporting air quantity of mouth make the coefficient of excess air of combustion process always deviate 1, and the flame energy that upper section burning generates
The enough coal gas sprayed by lower section or combustion air cooling, make the NOx in flue combustion process obtain comprehensively control with this.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (5)
1. a kind of coke oven combustion chamber flue structure of segmentally heating, the coke oven combustion chamber are made of multiple flues, and every two
A flue forms a duplex flue, and flue bottom sets combustion air outlet at bottom and poor gas outlet at bottom, founds fire
Road partition wall is exported along Gao Xiangshe multistage combustion air exports and multistage poor gas；It is characterized in that, the multistage combustion air goes out
Each section of combustion air exports in mouthful and the absolute altitude of each section of poor gas outlet in the outlet of multistage poor gas are all different, and last
The absolute altitude of one section of combustion air exports is higher than the absolute altitude of final stage poor gas outlet.
2. a kind of coke oven combustion chamber flue structure of segmentally heating according to claim 1, which is characterized in that described vertical
Combustion air road and meager coal air flue are set in quirk partition wall, along height to combustion air road is connected to vertical by multiple combustion air exports
Quirk, meager coal air flue is by multiple poor gas outlet flues, and combustion air exports and poor gas outlet are to vertical
Inclined upward, narrowed channel in quirk.
3. a kind of coke oven combustion chamber flue structure of segmentally heating according to claim 1, which is characterized in that described to help
Combustion air outlet at bottom, poor gas outlet at bottom, each section of combustion air exports and each section of meager coal gas outlet set flow tune respectively
Regulating device.
4. a kind of coke oven combustion chamber flue structure of segmentally heating according to claim 1, which is characterized in that it is described most
The gas volume that latter section of poor gas outlet is fed is feed coal gas total amount 1%~50%, and final stage combustion air exports supply
The combustion-supporting air quantity entered is to feed the 1%~50% of combustion air total amount, and guarantee above final stage combustion air exports
Ascending air overall air coefficient of excess is greater than 1.
5. a kind of coke oven combustion chamber flue structure of segmentally heating according to claim 1, which is characterized in that described more
Section combustion air exports and the number of fragments that multistage poor gas exports are identical or different.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710467673.1A CN107033927B (en) | 2017-06-20 | 2017-06-20 | A kind of coke oven combustion chamber flue structure of segmentally heating |
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| CN201710467673.1A CN107033927B (en) | 2017-06-20 | 2017-06-20 | A kind of coke oven combustion chamber flue structure of segmentally heating |
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| CN107033927B true CN107033927B (en) | 2019-08-27 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108315021B (en) * | 2018-03-30 | 2021-02-23 | 中冶焦耐(大连)工程技术有限公司 | Top-loading tamping integrated coking method |
| CN108728127B (en) * | 2018-07-31 | 2023-08-25 | 中冶焦耐(大连)工程技术有限公司 | Low-nitrogen-emission coke oven heating system adopting rich gas heating and adjusting method thereof |
| CN108774537B (en) * | 2018-07-31 | 2023-08-25 | 中冶焦耐(大连)工程技术有限公司 | Low-nitrogen-emission reheating coke oven heating system and adjusting method thereof |
| CN110527526A (en) * | 2019-09-27 | 2019-12-03 | 中冶焦耐(大连)工程技术有限公司 | A kind of lamp cap brick with multistage outlet |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4244786A (en) * | 1977-08-24 | 1981-01-13 | Dr. C. Otto & Comp. G.M.B.H. | Double flue arrangement in heating walls for horizontal coke ovens |
| CN1510335A (en) * | 2002-12-26 | 2004-07-07 | 上海理工大学 | Low NOx combustor with mixed coal and gas fuel |
| CN200989589Y (en) * | 2006-08-29 | 2007-12-12 | 上海理工大学 | Gas refiring and double-path level thin and thick integrated low NOx burner |
| CN102721058A (en) * | 2012-06-26 | 2012-10-10 | 上海华之邦能源科技有限公司 | Gas burner with low NOX |
| CN102925164A (en) * | 2012-11-13 | 2013-02-13 | 中冶焦耐工程技术有限公司 | Coke oven heating method |
| CN206887005U (en) * | 2017-06-20 | 2018-01-16 | 中冶焦耐(大连)工程技术有限公司 | A kind of coke oven combustion chamber flue structure of heat stepwise |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3712527B2 (en) * | 1998-05-08 | 2005-11-02 | 社団法人日本鉄鋼連盟 | Method for reducing NOx in coke oven combustion exhaust gas |
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2017
- 2017-06-20 CN CN201710467673.1A patent/CN107033927B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4244786A (en) * | 1977-08-24 | 1981-01-13 | Dr. C. Otto & Comp. G.M.B.H. | Double flue arrangement in heating walls for horizontal coke ovens |
| CN1510335A (en) * | 2002-12-26 | 2004-07-07 | 上海理工大学 | Low NOx combustor with mixed coal and gas fuel |
| CN200989589Y (en) * | 2006-08-29 | 2007-12-12 | 上海理工大学 | Gas refiring and double-path level thin and thick integrated low NOx burner |
| CN102721058A (en) * | 2012-06-26 | 2012-10-10 | 上海华之邦能源科技有限公司 | Gas burner with low NOX |
| CN102925164A (en) * | 2012-11-13 | 2013-02-13 | 中冶焦耐工程技术有限公司 | Coke oven heating method |
| CN206887005U (en) * | 2017-06-20 | 2018-01-16 | 中冶焦耐(大连)工程技术有限公司 | A kind of coke oven combustion chamber flue structure of heat stepwise |
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