CN102268266A - Controllable multi-section-combustion heating molded coke oven - Google Patents
Controllable multi-section-combustion heating molded coke oven Download PDFInfo
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- CN102268266A CN102268266A CN201110167900A CN201110167900A CN102268266A CN 102268266 A CN102268266 A CN 102268266A CN 201110167900 A CN201110167900 A CN 201110167900A CN 201110167900 A CN201110167900 A CN 201110167900A CN 102268266 A CN102268266 A CN 102268266A
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Abstract
The invention relates to a controllable multi-section-combustion heating molded coke oven, which belongs to the field of smelting and coking. The oven comprises a combustion chamber, a carbonization chamber, a chute and a heat storage chamber, and is characterized in that: the combustion chamber consists of a plurality of vertical flame paths; each two vertical flame paths form a double flame path; multi-section blast-furnace gas and air feeding openings and a blast-furnace gas and air first-section feeding opening are positioned at the bottom of the vertical flame paths; the multi-section blast-furnace gas and air feeding openings are positioned in partition walls of the vertical flame paths in the combustion chamber; and a sliding regulating brick is arranged at the gas outlet on the top and can be regulated to change the gas flow cross section area of the top end, so that the gas flow can be regulated. Waste gas circulating holes formed in the root parts of the middle partition walls of the double flame paths; waste gas in descending gas flow flame paths is ducked to ascending gas flow vertical paths from the waste gas circulating holes so as to be mixed with rising combusting gas; and thus, combusting mixed gas is diluted, the combustion intensity is lowered, the flame is prolonged and the uniformity of high-attitude heating in the carbonization chamber is increased. The structure is suitable for developing large coke oven, and can effectively improve the uniformity of high-attitude heating of the coke oven, reduce heat lost and contribute to environment protection.
Description
Technical field
The present invention 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 more and more higher 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 this invention is to 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 achieving the above object, the present invention is achieved through the following technical solutions:
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 be 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 by the gas communication sectional area that changes adjustable grate hole, realize by 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 invention has the beneficial effects as follows:
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, and the air gas amount of infeeding all can be regulated; 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, again in conjunction with exhaust gas recirculation, 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 degree, reduce high temperature dot, thereby reduce NO
XGeneration, be more conducive to environmental protection.
Description of drawings
Fig. 1 is a coking furnace shaft structure sectional view of the present invention;
Fig. 2 is a coking furnace shaft burning sectional view of the present invention.
Among the figure: 2-coking chamber 3-upstream flue 4-downdraft flue 5-downdraft chute 6-upstream chute 7-upstream chute 8-regenerator (this exchange of 1-combustion chamber, 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 infeeds air and second section blast furnace gas of blast tube 17-in mouthful (chute outlet) 16-flue partition for first section, air infeeds the 3rd section blast furnace gas of mouthful 18-, air infeeds mouthful 19-twinflue and crosses over hole 20-exhaust gas circulation hole
Embodiment
Describe furnace binding of the present invention and heating means 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 enters 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, by 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, by 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 degree, 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 mutually to be connected with air regenerator and gas regenerator respectively in the chute, as shown in Figure 1 and 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 by chute 7 and chute 6 respectively, and waste gas after burning enters regenerator 8 by 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 by regulating brick to grate hole plus-minus by sectional area at vault.In little regenerator bottom is bottom flue, and the outer end of bottom flue is connected with dividing flue, discharges by main flue to chimney at last.
Present embodiment coke oven mode of operation is divided into two kinds of heat supply OFF state, and corresponding two kinds of fuel heat supplies are specifically described as follows:
1. use blast furnace gas to act as a fuel and the air mixed burning is heated coke oven
1) the air bottom flue 11 below air regenerator 13 and gas regenerator 12, coal gas bottom flue 10 enter corresponding separately air regenerator 13 and gas regenerator 12 after distributing tolerance by adjustable grate hole to air respectively with blast furnace gas;
2) the interior checker brick of air, blast furnace gas and regenerator that enter air regenerator 13 and gas regenerator 12 carry out heat exchange, rise to the regenerator top to be warming up to～1100 ℃;
3) heating gas and the warm air on arrival regenerator top enter each self-corresponding chute of regenerator top, and preheated air enters chute 6, and the blast furnace gas of preheating enters chute 7; Be divided into two-way through chute then and enter gas channel 16 in chute outlet 15 of combustion chamber flue bottom and the combustion chamber flue partition respectively;
4) entering the hot blast furnace gas of combustion chamber and warm air 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 more even, more abundant in the high combustion distribution that makes progress;
5) waste gas of burning generation rises to the leap hole 19 on flue top, turn to then and enter downdraft flue 4, downdraft chute 5 outlets at the bottom of flue enter adjacent regenerator 8, in regenerator 8, carry out heat exchange with checker brick, be cooled to after the heat exchange～270 ℃ waste gas enters bottom flue, waste gas lobe and flue bent pipe by dividing a flue through adjustable grate hole again, discharges by 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, Abgasabsaugung in the downdraft is come, it is mixed with the combustion gas flowing that rises, reach the dilute combustion gas mixture, reduce the burning severe degree, the target of elongating flame finally reaches the purpose of coking chamber height to heating uniformity;
7) sectional combustion gas flow-regulating: 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 by 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, a combustion processes of using blast furnace gas to act as a fuel to heat with air combustion is promptly accused and is finished.
2. use coke-oven gas to act as a fuel and the air mixed burning is heated coke oven
1) coal gas bottom flue 10, the air bottom flue 11 of air below air regenerator 13 and gas regenerator 12 enters corresponding regenerator after distributing by adjustable grate hole;
2) enter 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) warm air at arrival regenerator top enters in regenerator top chute 6 and the chute 7, enters the gas channel 16 in flue bottom, combustion chamber and the combustion chamber flue partition then;
4) coke-oven gas is flowed through and is entered flue 3 behind gas pipe brick, the gas pipe brick in the chute district and the coke-oven gas nozzle 21 at the bottom of the flue in the process pipe gasburner, regenerator main wall of vault;
5) warm air that enters the combustion chamber is divided into three parts (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 enter downdraft flue 4, downdraft chute 5 outlets at the bottom of flue enter regenerator 8, in regenerator 8, carry out heat exchange with checker brick, be cooled to after the heat exchange～300 ℃ of waste gas enter bottom flue, waste gas lobe and flue bent pipe through adjustable grate hole again to be passed through to divide flue, discharge by 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, Abgasabsaugung in the downdraft is come, it is mixed with the combustion gas flowing that rises, reach the dilute combustion gas mixture, reduce the burning severe degree, the target of elongating flame finally reaches the purpose of coking chamber height to heating uniformity.
8) sectional combustion gas flow-regulating: 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 by 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 (6)
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 be 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 by blast furnace gas, air are regulated in the gas communication cross section of regulating adjustable grate hole realizes by 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 by the slide control brick.
6. a kind of controlled multistage burning hot type coke oven according to claim 1 and 2 is characterized in that this structure is applicable to the coke oven higher to environmental requirement.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110167900A CN102268266A (en) | 2011-06-21 | 2011-06-21 | Controllable multi-section-combustion heating molded coke oven |
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|---|---|---|---|
| CN201110167900A CN102268266A (en) | 2011-06-21 | 2011-06-21 | Controllable multi-section-combustion heating molded coke oven |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102925164A (en) * | 2012-11-13 | 2013-02-13 | 中冶焦耐工程技术有限公司 | Coke oven heating method |
| CN105349156A (en) * | 2015-12-02 | 2016-02-24 | 中冶焦耐工程技术有限公司 | Vertical furnace with sectional heating combustion chamber and heating method of vertical furnace |
| CN106190184A (en) * | 2016-08-12 | 2016-12-07 | 湖南千盟智能信息技术有限公司 | A kind of coke oven heating method and device reducing NOx generation |
| CN107747272A (en) * | 2017-11-24 | 2018-03-02 | 无锡锡通工程机械有限公司 | Channel heating system |
| CN108277022A (en) * | 2018-03-30 | 2018-07-13 | 中冶焦耐(大连)工程技术有限公司 | A kind of top dress makes integrated coking furnace shaft structure and its adjusting method firm by ramming |
| CN108774537A (en) * | 2018-07-31 | 2018-11-09 | 中冶焦耐(大连)工程技术有限公司 | A kind of low-nitrogen discharged complex thermal coke heating system and its adjusting method |
| CN111057558A (en) * | 2019-12-31 | 2020-04-24 | 山东钢铁集团日照有限公司 | Application method of hydrogen-rich gas generated after LNG (liquefied Natural gas) process in coke oven heating |
| CN111828972A (en) * | 2020-07-27 | 2020-10-27 | 江苏旭润机电科技有限公司 | Energy-saving layered combustor with good heat transfer effect |
| CN113122283A (en) * | 2021-05-14 | 2021-07-16 | 中冶焦耐(大连)工程技术有限公司 | Adjusting method of heating system of compound heat type multi-section heating coke oven |
| CN113372930A (en) * | 2021-07-08 | 2021-09-10 | 张双兴 | Environment-friendly efficient coke oven |
| CN115449381A (en) * | 2022-09-29 | 2022-12-09 | 中冶焦耐(大连)工程技术有限公司 | Chute structure of coke oven |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102925164A (en) * | 2012-11-13 | 2013-02-13 | 中冶焦耐工程技术有限公司 | Coke oven heating method |
| CN105349156A (en) * | 2015-12-02 | 2016-02-24 | 中冶焦耐工程技术有限公司 | Vertical furnace with sectional heating combustion chamber and heating method of vertical furnace |
| CN106190184A (en) * | 2016-08-12 | 2016-12-07 | 湖南千盟智能信息技术有限公司 | A kind of coke oven heating method and device reducing NOx generation |
| CN107747272B (en) * | 2017-11-24 | 2023-04-25 | 无锡锡通工程机械有限公司 | Channel heating system of regenerative train equipment |
| CN107747272A (en) * | 2017-11-24 | 2018-03-02 | 无锡锡通工程机械有限公司 | Channel heating system |
| CN108277022A (en) * | 2018-03-30 | 2018-07-13 | 中冶焦耐(大连)工程技术有限公司 | A kind of top dress makes integrated coking furnace shaft structure and its adjusting method firm by ramming |
| CN108277022B (en) * | 2018-03-30 | 2023-05-16 | 中冶焦耐(大连)工程技术有限公司 | Top-mounted tamping integrated coke oven body structure and adjusting method thereof |
| CN108774537A (en) * | 2018-07-31 | 2018-11-09 | 中冶焦耐(大连)工程技术有限公司 | A kind of low-nitrogen discharged complex thermal coke heating system and its adjusting method |
| 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 |
| CN111057558A (en) * | 2019-12-31 | 2020-04-24 | 山东钢铁集团日照有限公司 | Application method of hydrogen-rich gas generated after LNG (liquefied Natural gas) process in coke oven heating |
| CN111828972A (en) * | 2020-07-27 | 2020-10-27 | 江苏旭润机电科技有限公司 | Energy-saving layered combustor with good heat transfer effect |
| CN113122283A (en) * | 2021-05-14 | 2021-07-16 | 中冶焦耐(大连)工程技术有限公司 | Adjusting method of heating system of compound heat type multi-section heating coke oven |
| CN113372930A (en) * | 2021-07-08 | 2021-09-10 | 张双兴 | Environment-friendly efficient coke oven |
| CN113372930B (en) * | 2021-07-08 | 2024-03-08 | 张双兴 | Environment-friendly efficient coke oven |
| CN115449381A (en) * | 2022-09-29 | 2022-12-09 | 中冶焦耐(大连)工程技术有限公司 | Chute structure of coke oven |
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Application publication date: 20111207 |