CN205223090U - Coke oven exhaust gas circulation structure - Google Patents
Coke oven exhaust gas circulation structure Download PDFInfo
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- CN205223090U CN205223090U CN201520988433.2U CN201520988433U CN205223090U CN 205223090 U CN205223090 U CN 205223090U CN 201520988433 U CN201520988433 U CN 201520988433U CN 205223090 U CN205223090 U CN 205223090U
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- waste gas
- coke oven
- flue
- brick
- exhaust gas
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Abstract
The utility model relates to a coke oven exhaust gas circulation structure, including waste gas main duct, connecting pipe, flow automatic control, basement crossline setting pipe, lower spray tube and the brick waste gas way that connects gradually, waste gas main duct connects the waste gas air supply through outside frequency conversion fan, and basement crossline setting pipe transversely sets up along the coke oven, and its upper portion is set the spray tube and is connected the brick waste gas way of building by laying bricks or stones in each regenerator wall respectively, and the brick waste gas way export at brick waste gas way top is established in the vertical flue of combustion chamber. The utility model discloses in being applied to poor gas heating's compound hot type coke oven, can volume that increases exhaust gas circulation, reduce NOX's in the coke oven flue gas emission, improve the vertical flue height to the homogeneity that heats, its simple structure adjusts convenient accuracy, can realize automatic control, and be favorable to improving operation environment, and alleviateing intensity of labour, work efficiency and security improve.
Description
Technical field
The utility model relates to coke oven exhaust gas circulating technology field, particularly relates to a kind of coke oven exhaust gas loop structure.
Background technology
The waste gas circulation principle of work that current coke oven adopts is under the jet power effect of upstream, the waste gas of downdraft is drawn into upstream quirk from circulation pore, reduce the concentration of oxygen in wherein combustibles and air, and increase gas velocity, elongate flame, thus be conducive to the upper and lower uniformly ripening of charge of coke, improve coke quality.This method is also that numerous coking designing unit is for improving the high conventional means to heating uniformity of coke oven.But in existing waste gas circulation structure, waste gas circulation amount cannot accurately control, and depends on the jet power of upstream quirk.
Meanwhile, have research display, the waste gas circulation amount increased in flue can reduce NO in waste gas
xgrowing amount.This is the flame elongated due to waste gas circulation in flue, avoids in flue and occurs high-temperature zone, thus reduce thermal NO
xgrowing amount.But in today that coke oven keeps the large-scale development, combustion chamber is more and more higher, by the restriction of existing waste gas circulation structure, the internal circulating load of waste gas cannot meet the high requirement to heating uniformity of coke oven completely, is therefore unfavorable for reducing NO in waste gas
xgrowing amount.
Simultaneously, for a lot of iron and steel enterprise, what pit kiln adopted substantially is all complex thermal coke, in normal production, substantially only use low-grade gas to carry out coking, its rich gas steam line system is general only to be used at the operation initial stage, thereafter be substantially in idle state, cause significant wastage.
Fig. 1 and Fig. 2 is the furnace binding schematic diagram adopting the conventional exhaust gas recycle system, the waste gas of quirk of declining in figure enters into upstream quirk through circulation pore I, realize waste gas circulation, as previously described, this structure cannot control accurately to the internal circulating load of waste gas, and circulating flow rate depends on the jet-impingement power of rising quirk.
Summary of the invention
The utility model provides a kind of coke oven exhaust gas loop structure, is applied in the complex thermal coke of low-grade gas heating, can increases waste gas circulation amount, reduces NO in coke oven flue gas
xquantity discharged, improve flue high to heating homogeneity; Its structure is simple, accurately easy to adjust, can realize automatic control; And be conducive to improving operating environment, reduce labor intensity, increase work efficiency and security.
In order to achieve the above object, the utility model realizes by the following technical solutions:
A kind of coke oven exhaust gas loop structure, comprise the waste gas header, pipe connecting, auto flow controller, the horizontally-arranged pipe of vault, lower jet pipe and the brick flue that connect successively, described waste gas header connects waste gas source of the gas by outside frequency conversion fan, the horizontally-arranged pipe of vault is along coke oven arranged transversely, its top is set jet pipe and is connected respectively and build by laying bricks or stones in each regenerator brick flue within the walls, and the brick flue outlet at brick flue top is located in the flue of combustion chamber.
Brick flue outlet shapes is circular or square, and opening form is open or half opening.
Compared with prior art, the beneficial effects of the utility model are:
1) internal circulating load of waste gas can carry out auto-control in outside, is conducive to the control of flame temperature;
2) because the temperature of the waste gas of introducing is far below the gas flow temperature in rising quirk, the temperature of upstream can be reduced, thus reduce NO in the process of low-grade gas heating
xgrowing amount;
3) can re-use idle old heating system, the transformation without the need to carrying out dismounting formula to coke oven just can realize the object increasing waste gas circulation amount, fall low NOX emission, and can reduce cost of investment, shortens the construction period;
4) structure is simple, accurately easy to adjust, can realize automatic control;
5) be conducive to improving operating environment, reduce labor intensity, increase work efficiency and security.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of conventional coke oven exhaust gas loop structure.
Fig. 2 is the A-A sectional view in Fig. 1.
Fig. 3 is the structural representation of coke oven exhaust gas loop structure described in the utility model.
Fig. 4 is the B-B sectional view of Fig. 3.(horizontally rotating 90 °).
In figure: the horizontally-arranged pipeline of I. circulation pore 1. waste gas header 2. pipe connecting 3. auto flow controller 4. vault 5. times jet pipe 6. brick flue 7. brick flues export 8. regenerator wall 9. flues
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further:
Seeing Fig. 3-Fig. 4, is the structural representation of coke oven exhaust gas loop structure described in the utility model.A kind of coke oven exhaust gas loop structure described in the utility model, comprise the waste gas header 1, pipe connecting 2, auto flow controller 3, the horizontally-arranged pipe of vault 4, lower jet pipe 5 and the brick flue 6 that connect successively, described waste gas header 1 connects waste gas source of the gas by outside frequency conversion fan, the horizontally-arranged pipe 4 of vault is along coke oven arranged transversely, its top is set jet pipe 5 and is connected the brick flue 6 of building by laying bricks or stones in each regenerator wall 9 respectively, and the brick flue outlet 7 at brick flue 6 top is located in combustion chamber flue 9.
Brick flue exports 7 shapes for circular or square, and opening form is open or half opening.
Waste gas circulation method based on a kind of coke oven exhaust gas of the utility model loop structure is as follows:
1) waste gas source of the gas blasts waste gas header 1 by frequency conversion fan, and waste gas enters in upstream flue through pipe connecting 2, auto flow controller 3, the horizontally-arranged pipe of vault 4, lower jet pipe 5, brick flue 6 successively, mixes with upstream, elongates flame;
2) introduce the temperature of waste gas lower than the gas flow temperature in upstream flue, the temperature of upstream can be reduced, thus reduce NO in the process of low-grade gas heating
xgrowing amount;
3) flow of waste gas is controlled by auto flow controller 3.
The height that brick flue outlet 7 is arranged is determined according to combustion chamber flue height.
For the complex thermal coke of built use low-grade gas heating, waste gas header 1 and pipe connecting 2 are substituted by the carbon removal air line in rich gas heating system, the horizontally-arranged pipe of vault 4 and lower jet pipe 5 are substituted by the horizontally-arranged pipe of coke-oven gas and lower jet pipe respectively, and brick flue 6 is substituted by brick gas passage.
The above; be only the utility model preferably embodiment; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; be equal to according to the technical solution of the utility model and utility model design thereof and replace or change, all should be encompassed within protection domain of the present utility model.
Claims (2)
1. a coke oven exhaust gas loop structure, it is characterized in that, comprise the waste gas header, pipe connecting, auto flow controller, the horizontally-arranged pipe of vault, lower jet pipe and the brick flue that connect successively, described waste gas header connects waste gas source of the gas by outside frequency conversion fan, the horizontally-arranged pipe of vault is along coke oven arranged transversely, its top is set jet pipe and is connected respectively and build by laying bricks or stones in each regenerator brick flue within the walls, and the brick flue outlet at brick flue top is located in the flue of combustion chamber.
2. a kind of coke oven exhaust gas loop structure according to claim 1, is characterized in that, brick flue outlet shapes is circular or square, and opening form is open or half opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520988433.2U CN205223090U (en) | 2015-12-02 | 2015-12-02 | Coke oven exhaust gas circulation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520988433.2U CN205223090U (en) | 2015-12-02 | 2015-12-02 | Coke oven exhaust gas circulation structure |
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| Publication Number | Publication Date |
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| CN205223090U true CN205223090U (en) | 2016-05-11 |
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|---|---|---|---|
| CN201520988433.2U Active CN205223090U (en) | 2015-12-02 | 2015-12-02 | Coke oven exhaust gas circulation structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105385460A (en) * | 2015-12-02 | 2016-03-09 | 中冶焦耐工程技术有限公司 | Circulating structure and method for exhaust gas of coke oven |
-
2015
- 2015-12-02 CN CN201520988433.2U patent/CN205223090U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105385460A (en) * | 2015-12-02 | 2016-03-09 | 中冶焦耐工程技术有限公司 | Circulating structure and method for exhaust gas of coke oven |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180803 Address after: 116085 128 high energy street, Qixian Ling high tech Industrial Park, Dalian, Liaoning Patentee after: ACRE Coking And Refractory (Dalian) Engineering Consulting Corp., MCC Address before: 116085 128 high energy street, Qixian Ling high tech Industrial Park, Dalian, Liaoning Patentee before: ACRE Coking and Refractory Engineering Consulting Corporation, MCC |
|
| TR01 | Transfer of patent right |