CN202116492U - Controllable multi-section combustion heating type coke oven - Google Patents
Controllable multi-section combustion heating type coke oven Download PDFInfo
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- CN202116492U CN202116492U CN2011202110830U CN201120211083U CN202116492U CN 202116492 U CN202116492 U CN 202116492U CN 2011202110830 U CN2011202110830 U CN 2011202110830U CN 201120211083 U CN201120211083 U CN 201120211083U CN 202116492 U CN202116492 U CN 202116492U
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Abstract
The utility model provides a controllable multi-section combustion heating type coke oven and relates to the field of metallurgy coking, which comprises a combustion chamber, a carbonization chamber, a chute and a heat storage chamber. The controllable multi-section combustion heating type coke oven is characterized in that the combustion chamber consists of a plurality of vertical flame paths, and a multi-section shaft furnace coal gas and air feeding port. Every two flame paths form a twinflue, a shaft furnace coal gas and air first-section feeding port is located at the bottom of each vertical flame path, the multi-section shaft furnace coal gas and air feeding ports are located in partition walls of the vertical flame paths of the combustion chamber and located at different levels, a sliding type adjusting brick is arranged at the position of a gas outlet at the topmost end, and the flow sectional area of gas at the top end can be changed through the adjusting brick so as to adjust flow of the gas. The root portions of the partition walls in the middles of the twinflues are provided with exhaust gas circulation holes, and exhaust gas in downdraught vertical flame paths is sucked to updraught vertical flame paths through the exhaust gas circulation holes and mixed with rising combustion flow, thereby diluting combustion mixed gas, reducing combustion degrees, elongating flame and improving uniformity of vertical heating of the carbonization chamber. The structure is suitable for large-scale development of the coke oven, can effectively improve the uniformity of the vertical heating of the carbonization chamber, reduces heat loss and facilitates environmental protection.
Description
Technical field
The utility model relates to metallurgical coking field, particularly a kind of structure that realizes pressures inside multistage burning control.
Background technology
Along with the development of coking technology, national policy is also increasingly high to the environmental requirement of coking industry, especially to the disposal of pollutants of coking paroxysmal, NO
XEmission limit set is more and more stricter.Therefore, the coke oven design just towards maximizing and the development of multiple spot burning control structure combining, to reduce the coke pushing number of times, reduces NO
XGeneration, thereby reach environmental requirement.
Summary of the invention
The purpose of the utility model provide a kind of re-heat down-regulation type, blast furnace gas and air respectively segmentation infeed flue burning; Coke-oven gas is the coke oven construction of spray down, and this structure is fit to the coke oven large scale development, can effectively improve the homogeneity of coke oven height to heating; Reduce thermosteresis, help environmental protection.
For realizing above-mentioned purpose, the utility model is realized through following technical scheme:
A kind of controlled multistage burning hot type coke oven; Comprise combustion chamber, coking chamber, chute, regenerator; It is characterized in that; The combustion chamber comprises that twinflue, multistage coal gas and air that many groups are made up of two flues infeed mouthful, coal gas and air infeed mouth for first section and be positioned at the flue bottom, and multistage coal gas and air infeed mouth and be positioned at the combustion chamber flue partition and be positioned at different height.
A kind of controlled multistage burning hot type coke oven; Comprise combustion chamber, coking chamber, chute, regenerator; It is characterized in that the combustion chamber comprises that twinflue, the multistage air be made up of two flues infeed mouth, air infeeds mouth for first section and is positioned at the flue bottom, the multistage air infeeds mouth and is positioned at combustion chamber twinflue partition wall and is positioned at different height; Be provided with the slide control brick to adjust the implication amount in the outlet of multistage air topmost, change high to the distribution of air flow ratio; The coke-oven gas nozzle is positioned at the flue bottom.
The root of described combustion chamber twinflue partition wall is provided with exhaust gas circulation hole, and exhaust gas circulation hole makes waste gas after burning imported the upstream flue of coal gas and air combustion by the downdraft flue two flue bottom connections of twinflue.
Described regenerator bottom and bottom flue are provided with adjustable grate hole between the top, change the gas amount of infeeding of blast furnace gas, air through the gas communication sectional area that changes adjustable grate hole, realize through regulating brick at vault to grate hole plus-minus.
This structure is applicable to that the coking chamber height is 5～10 meters a coke oven.
Compared with prior art, the beneficial effect of the utility model is:
1) this structure can effectively be improved the coke oven height to heating uniformity, helps coke oven and maximizes; Use the coke furnace carbonization chamber height of this structure can reach more than the 7m, promoted coking chamber single hole volume to size; Produce same output coke, the coke pushing number of times reduces, and the disposal of pollutants of coke oven paroxysmal reduces; Effectively promote the operation efficiency of coke over machinery simultaneously;
When 2) using the blast furnace gas heat supply, air and blast furnace gas segmentation infeed flue, the equal adjustable of the air gas amount of infeeding; This method combines with waste gas circulation, can effectively improve the coke oven height to heating uniformity, reduces thermosteresis, has improved the thermo-efficiency of coke oven;
When 3) adopting the coke-oven gas heat supply, coke-oven gas spray down, air segmenting infeeds flue, burns with coke-oven gas, combines exhaust gas recirculation again, can effectively improve the coke oven height to heating uniformity, reduces thermosteresis, has improved the thermo-efficiency of coke oven;
4) sectional combustion and exhaust gas recirculation help the control burning, reduce coke-oven gas or blast furnace gas incendiary severe, reduce high temperature dot, thereby reduce NO
XGeneration, be more conducive to environmental protection.
Description of drawings
Fig. 1 is the coking furnace shaft structure sectional view of the utility model;
Fig. 2 is the utility model coking furnace shaft burning sectional view.
Among the figure: first section of 1-combustion chamber 2-coking chamber 3-upstream flue 4-downdraft flue 5-downdraft chute 6-upstream chute 7-upstream chute 8-regenerator (this exchange, waste gas) 9-bottom flue (waste gas, this exchange) 10-coal gas bottom flue 11-air bottom flue 12-gas regenerator 13-air regenerator 14-coke-oven gas passage 15-blast furnace gas, air infeed in mouthful (chute outlet) 16-flue partition air and blast tube 17-second section blast furnace gas, air and infeed mouthful 18-the 3rd section blast furnace gas, air and infeed a mouthful 19-twinflue leap hole 20-exhaust gas circulation hole
Embodiment
Describe the furnace binding and the heating means of the utility model in detail below in conjunction with accompanying drawing.
See Fig. 1, coke oven construction comprises combustion chamber 1, coking chamber 2, chute, regenerator, and chute comprises upstream chute 6, upstream chute 7, downdraft chute 5 (this exchange shown in Figure 1); Regenerator comprises gas regenerator 12, air regenerator 13, waste gas regenerator 8 (this exchange shown in Figure 1).Coking coal is by the coke oven furnace roof hole coking chamber 2 of packing into of coalingging, and by providing heat that the shove charge coal is smelt coke with coking chamber 2 combustion chamber alternately, the raw gas of generation gets into gas recovery system by the rising pore at furnace roof position.
See Fig. 2, coke oven combustion chamber comprises that combustion chamber twinflue, air and coal gas (blast furnace gas, coke-oven gas) infeed mouth, twinflue is crossed over hole 19, flue bottom exhaust gas circulation hole 20.Twinflue is made up of upstream flue 3 and downdraft flue 4, through leap hole 19 connections at flue top.
Air and coal gas infeed mouth and comprise that first section of blast furnace gas, air infeeds mouthfuls of 15, second sections blast furnace gas, air and infeed mouthfuls of 17 and the 3rd sections blast furnace gas, air and infeed mouthfuls 18; Blast furnace gas, air infeed mouthful 15 (being the chute outlet) for first section and are positioned at the flue bottom, and three sections air infeed mouth and are positioned at the combustion chamber flue and are positioned at different height.Blast furnace gas, air passageways 16 are positioned at the partition wall of flue.When adopting coke-oven gas to be fuel, air is the mode that multistage infeeds flue, and the air multistage infeeds structure with the blast furnace gas burning structures, and coke-oven gas sprays into the flue bottom by coke-oven gas nozzle 21.
The root of twinflue midfeather is provided with exhaust gas circulation hole 20; Through exhaust gas circulation hole 20 two flue bottoms are linked to each other; With the Abgasabsaugung in the downdraft flue 4 to the air-flow flue 3 that rises; Mix with the combustion gas flowing that rises, reach the dilute combustion gas mixture, reduce the burning severe, elongate flame, improve the purpose of coking chamber height to heating uniformity.
The bottom, combustion chamber is a chute, and the chute bottom is a regenerator.There is the gas channel that staggers each other to be connected with air regenerator and gas regenerator respectively in the chute; Like Fig. 1, shown in Figure 2; Gas passage 16 in the twinflue partition wall of combustion chamber is respectively blast furnace gas and air passageways; Blast furnace gas and air passageways communicate with gas regenerator 12 and air regenerator 13 through chute 7 and chute 6 respectively, and waste gas after burning gets into regenerator 8 through downdraft chute 5.Regenerator is divided into 17 little regenerator of lattice by the little partition wall in 16 roads, and the porous checker brick are arranged in the little regenerator, and the adjustable grate hole that can regulate the area size is arranged at little regenerator bottom; Realize the adjusting of gas through regulating brick to grate hole plus-minus through sectional area at vault.In little regenerator bottom is bottom flue, and the outer end of bottom flue is connected with dividing flue, discharges through main flue to chimney at last.
Present embodiment coke oven mode of operation is divided into two kinds of heat supply OFF state, corresponding two kinds of fuel heat supplies, and concrete the narration as follows:
1. use blast furnace gas to act as a fuel and the air mixed burning is heated coke oven
1) air gets into corresponding separately air regenerator 13 and gas regenerator 12 via air regenerator 13 and gas regenerator 12 following air bottom flue 11, coal gas bottom flues 10 after distributing tolerance through adjustable grate hole respectively with blast furnace gas;
2) the interior checker brick of air, blast furnace gas and regenerator that get into air regenerator 13 and gas regenerator 12 carry out heat exchange, rise to the regenerator top to be warming up to～1100 ℃;
3) arrive heating gas and each self-corresponding chute of warm air entering regenerator top that regenerator is pushed up, preheated air gets into chute 6, and the blast furnace gas of preheating gets into chute 7; Be divided into two-way through chute then and get into the gas channel 16 in chute outlet 15 of flue bottom, combustion chamber and the combustion chamber flue partition respectively;
4) hot blast furnace gas and the warm air that gets into the combustion chamber is divided into three parts and infeeds flue and burn; It mouthful is that chute outlet 15, second sections blast furnace gases, air infeed mouthfuls of 17, the 3rd sections blast furnace gas, air and infeed mouthfuls 18 at the bottom of the flue that first section of blast furnace gas, air infeed; Three sections blast furnace gases, gas inlets are positioned at different height, and the mode that this kind gas multistage infeeds is particularly suitable for the maximization design of coke oven, can make coal gas height make progress combustion distribution more evenly, more abundant;
5) waste gas of burning generation rises to the leap hole 19 on flue top; Turn to then and get into downdraft flue 4; Downdraft chute 5 outlets at the bottom of flue get into adjacent regenerator 8; In regenerator 8, carry out heat exchange with checker brick, be cooled to after the heat exchange～270 ℃ waste gas gets into bottom flue, waste gas lobe and flue bent pipe through dividing flue through adjustable grate hole again, discharges through main flue to chimney at last;
6) waste gas circulation: the root at a twinflue midfeather has exhaust gas circulation hole 20; The jet power of upstream and heat buoyancy can produce negative pressure herein, and the Abgasabsaugung in the downdraft is come, and it is mixed with the combustion gas flowing that rises; Reach the dilute combustion gas mixture; Reduce the burning severe, the target of elongating flame finally reaches the purpose of coking chamber height to heating uniformity;
7) sectional combustion gas flow modulation: be provided with at the top exit of segmentation air feed and slidably regulate brick, regulate brick and can change the pneumatic outlet sectional area through stirring, thereby change segmentation air feed height to the distribution of air flow ratio, with reach regulate high to the heating uniformity purpose;
So far, use the blast furnace gas combustion processes that heats with air combustion that acts as a fuel promptly to accuse completion.
2. use coke-oven gas to act as a fuel and the air mixed burning is heated coke oven
1) air distributes the back to get into corresponding regenerator via air regenerator 13 and gas regenerator 12 following coal gas bottom flue 10, air bottom flues 11 through adjustable grate hole;
2) get into the air of air regenerator 13 and gas regenerator 12 and the checker brick in the regenerator and carry out heat exchange, rise to the regenerator top then;
3) arrive in the warm air entering regenerator top chute 6 and chute 7 at regenerator top, get into the gas channel 16 in flue bottom, combustion chamber and the combustion chamber flue partition then;
4) coke-oven gas gas pipe brick, the gas pipe brick the chute district in and the 21 back entering flues 3 of the coke-oven gas nozzle at the bottom of the flue in the process line gasburner, regenerator main wall of vault of flowing through;
5) warm air that gets into the combustion chamber is divided into three parts, and (it mouthful is that 15, second sections air of chute outlet infeed mouthfuls of 17, the 3rd sections air and infeed mouthfuls 18 at the bottom of the flue that first section of air infeeds; ) carry out mixed firing with the coke-oven gas that ejects through coke-oven gas nozzle 21;
6) high-temp waste gas of burning generation rises to the leap hole 19 on flue top; Turn to then and get into downdraft flue 4; Downdraft chute 5 outlets at the bottom of flue get into regenerator 8; In regenerator 8, carry out heat exchange with checker brick, be cooled to after the heat exchange～300 ℃ of waste gas get into bottom flue, waste gas lobe and flue bent pipe through adjustable grate hole again to be passed through to divide flue, discharge through main flue to chimney at last;
7) waste gas circulation: the root of a twinflue midfeather has exhaust gas circulation hole 20; The jet power of upstream and heat buoyancy can produce negative pressure herein, and the Abgasabsaugung in the downdraft is come, and it is mixed with the combustion gas flowing that rises; Reach the dilute combustion gas mixture; Reduce the burning severe, the target of elongating flame finally reaches the purpose of coking chamber height to heating uniformity.
8) sectional combustion gas flow modulation: be provided with at the top exit of segmentation air feed and slidably regulate brick, regulate brick and can change the pneumatic outlet basal area through stirring, thereby change segmentation air feed height to the air partition rate, with reach regulate high to the heating uniformity purpose;
It is 5～10 meters the coke oven higher to environmental requirement that two kinds of fuel type of heating of the coke oven of this embodiment and structure all are used for the coking chamber height.
Claims (5)
1. controlled multistage burning hot type coke oven; Comprise combustion chamber, coking chamber, chute, regenerator; It is characterized in that the combustion chamber is made up of some flues, per two flues form that twinflue, multistage coal gas and an air infeed mouthful, coal gas and air infeed mouth for first section and be positioned at the flue bottom; Multistage coal gas and air infeed mouth and are positioned at the combustion chamber flue partition and are positioned at different height, and its top air stream outlet area is adjustable.
2. controlled multistage burning hot type coke oven; Comprise combustion chamber, coking chamber, chute, regenerator, it is characterized in that the combustion chamber is made up of some flues; Per two flues composition twinflue, a multistage air infeed mouth, air infeeds mouth for first section and is positioned at the flue bottom; The multistage air infeeds mouth and is positioned at the combustion chamber flue partition and is positioned at different height, and its top air stream outlet area is adjustable, and the coke-oven gas nozzle is positioned at the flue bottom.
3. a kind of controlled multistage burning hot type coke oven according to claim 1 and 2; It is characterized in that; The root of described combustion chamber twinflue partition wall is provided with exhaust gas circulation hole, and exhaust gas circulation hole makes waste gas after burning imported the upstream flue of coal gas and air combustion by the downdraft flue two flue bottom connections of twinflue.
4. a kind of controlled multistage burning hot type coke oven according to claim 1 and 2; It is characterized in that; Be provided with adjustable grate hole at the bottom of the described regenerator and between the bottom flue top; The gas amount of infeeding through blast furnace gas, air are regulated in the gas communication cross section of regulating adjustable grate hole realizes through regulating brick at vault to grate hole plus-minus.
5. a kind of controlled multistage burning hot type coke oven according to claim 1 and 2; It is characterized in that; Be provided with sliding type at the 3rd section gas outlet and regulate brick, change air stream outlet cross section, top, thereby reach the purpose of adjustments of gas flow through the slide control brick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202110830U CN202116492U (en) | 2011-06-21 | 2011-06-21 | Controllable multi-section combustion heating type coke oven |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202110830U CN202116492U (en) | 2011-06-21 | 2011-06-21 | Controllable multi-section combustion heating type coke oven |
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| CN202116492U true CN202116492U (en) | 2012-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011202110830U Expired - Lifetime CN202116492U (en) | 2011-06-21 | 2011-06-21 | Controllable multi-section combustion heating type coke oven |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102268266A (en) * | 2011-06-21 | 2011-12-07 | 中冶焦耐(大连)工程技术有限公司 | Controllable multi-section-combustion heating molded coke oven |
| CN105385461A (en) * | 2015-12-02 | 2016-03-09 | 中冶焦耐工程技术有限公司 | Sectionalized air feeding structure and method for coke oven heating |
| CN105925276A (en) * | 2016-06-23 | 2016-09-07 | 山西长林能源科技有限公司 | Staged air supplying and heating device and method for combustion chamber of coke furnace |
| CN105985789A (en) * | 2015-02-13 | 2016-10-05 | 肖自江 | External-heating sinking type low-temperature destructive distillation method for powdered coal and kiln system |
| CN107298981A (en) * | 2016-04-15 | 2017-10-27 | 北京众联盛化工工程有限公司 | A kind of 7.3m tops dress makes dual-purpose type coke oven production technology firm by ramming |
-
2011
- 2011-06-21 CN CN2011202110830U patent/CN202116492U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102268266A (en) * | 2011-06-21 | 2011-12-07 | 中冶焦耐(大连)工程技术有限公司 | Controllable multi-section-combustion heating molded coke oven |
| CN105985789A (en) * | 2015-02-13 | 2016-10-05 | 肖自江 | External-heating sinking type low-temperature destructive distillation method for powdered coal and kiln system |
| CN105985789B (en) * | 2015-02-13 | 2019-01-22 | 肖自江 | Outer hot sinking fine coal low-temperature cracking process and kiln system |
| CN105385461A (en) * | 2015-12-02 | 2016-03-09 | 中冶焦耐工程技术有限公司 | Sectionalized air feeding structure and method for coke oven heating |
| CN105385461B (en) * | 2015-12-02 | 2018-06-22 | 中冶焦耐工程技术有限公司 | A kind of coke oven heating feeds structure and method with air segmenting |
| CN107298981A (en) * | 2016-04-15 | 2017-10-27 | 北京众联盛化工工程有限公司 | A kind of 7.3m tops dress makes dual-purpose type coke oven production technology firm by ramming |
| CN105925276A (en) * | 2016-06-23 | 2016-09-07 | 山西长林能源科技有限公司 | Staged air supplying and heating device and method for combustion chamber of coke furnace |
| CN105925276B (en) * | 2016-06-23 | 2018-11-27 | 山西长林能源科技有限公司 | A kind of coke oven combustion chamber segmentation gas supply heating device and its method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120118 |
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| CX01 | Expiry of patent term |