CN104611501B - Flue gas low-temperature section waste heat recovery apparatus of converter and method - Google Patents
Flue gas low-temperature section waste heat recovery apparatus of converter and method Download PDFInfo
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- CN104611501B CN104611501B CN201410759531.9A CN201410759531A CN104611501B CN 104611501 B CN104611501 B CN 104611501B CN 201410759531 A CN201410759531 A CN 201410759531A CN 104611501 B CN104611501 B CN 104611501B
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Abstract
The present invention relates to a kind of flue gas low-temperature section waste heat recovery apparatus of converter, it is connected to gasification cooling flue, one end including gasification cooling flue extension is connected with gasification cooling flue, the other end is connected with adiabatic flue, adiabatic flue is connected with vaporizer, vaporizer is connected with economizer, and economizer is connected with inertia force dust arrester, inertia force dust arrester and exiting flue gas pipeline；Wherein, gasification cooling flue extension and vaporizer respectively with economizer by pipeline connection, after the hot water in economizer enters gasification cooling flue extension and vaporizer, produced saturated steam by flue gas with heat inside it；Explosion venting valve is installed on vapotron, exiting flue gas pipeline is provided with double medium spray gun device, for jet atomization drop.The present invention also provides for the recovery method of flue gas low-temperature section waste heat recovery apparatus of a kind of converter.The use of flue gas low-temperature section waste heat recovery apparatus of converter is safer, and cost is relatively low.
Description
Technical field
The present invention relates to a kind of flue gas low-temperature section waste heat recovery apparatus of converter and method.
Background technology
About 900 DEG C are still had owing to the Converter Residual Heat Boiler back-end ductwork of existing technique exports a flue-gas temperature, either wet method or this partial heat is reclaimed by dry cleaning with recovery process the most again, causing partial heat to lose, not having the reason reclaimed is to worry the safety problem of waste heat recovery.
But, residual heat and energy recycles and will effectively reduce steel products production cost, therefore need to recycle this partial heat on the premise of solving safety problem.
It is therefore desirable to a kind of flue gas low-temperature section waste heat recovery apparatus of converter of design and method, to overcome the problems referred to above.
Summary of the invention
It is an object of the invention to overcome the defect of prior art, it is provided that flue gas low-temperature section waste heat recovery apparatus of converter that a kind of safety is higher and method.
The present invention is achieved in that
The present invention provides a kind of flue gas low-temperature section waste heat recovery apparatus of converter, is connected to gasification cooling flue, including gasification cooling flue extension, adiabatic flue, vaporizer, economizer, inertia force dust arrester and exiting flue gas pipeline；One end of described gasification cooling flue extension is connected with described gasification cooling flue, the other end is connected with described adiabatic flue, described adiabatic flue is connected with described vaporizer, described vaporizer is connected with described economizer, described economizer is connected with described inertia force dust arrester, described inertia force dust arrester and described exiting flue gas pipeline；Wherein, described gasification cooling flue extension and described vaporizer pass through pipeline connection with described economizer respectively, after hot water in described economizer enters described gasification cooling flue extension and described vaporizer, produced saturated steam by flue gas with heat inside it；Explosion venting valve is installed on described vapotron, described exiting flue gas pipeline is provided with double medium spray gun device, for jet atomization drop.
Further, described inertia force dust arrester is built-in with scraper ash-transmission machine.
Further, described vaporizer and described economizer are equipped with long telescopic soot blower.
Further, described long telescopic soot blower employs nitrogen as soot blowing source of the gas.
Further, described exiting flue gas pipeline is connected to follow-up cleaner by cleaning shaft.
The present invention also provides for the recovery method of flue gas low-temperature section waste heat recovery apparatus of a kind of converter, comprise the following steps: step one: during converter smelting, gasification cooling flue afterbody outlet temperature is that the flue gas of 900 DEG C enters into gasification cooling flue extension, through radiation heat transfer in this equipment, flue-gas temperature is cooled in the range of 660 DEG C-680 DEG C, wherein, thermogenetic heat is changed for heating the hot water from economizer so that it is produce saturated steam；Step 2: from gasification cooling flue extension flue gas out after adiabatic flue, enter in vaporizer, through indirect heat exchange in vaporizer, flue-gas temperature after heat exchange is in the range of 300 DEG C-320 DEG C, change thermogenetic heat for heating the hot water from economizer so that it is produce saturated steam；Wherein, described vaporizer is provided with explosion venting valve；Step 3: the flue gas after evaporator heat exchange enters into economizer, the heat of flue gas carries out heat exchange by the industry water of 25-35 DEG C, flue-gas temperature be reduced in the range of 200 DEG C-250 DEG C, industry water the hot water of 100 DEG C-110 DEG C formed enters into gasification cooling flue extension by pipeline and vaporizer produces saturated steam；Step 4: enter into inertia force dust arrester from economizer flue gas out, ash-laden gas is carried out thick dedusting；Step 5: the flue gas after thick dedusting enters in exiting flue gas pipeline, carries out direct heat transfer, in the range of temperature is reduced to 180 ~ 200 DEG C with the atomized drop of the double medium spray gun devices ejection being arranged in described exiting flue gas pipeline；Step 6: carry out follow-up dedusting by cleaning shaft from exiting flue gas pipeline flue gas out.
Further, described vaporizer and described economizer are equipped with long telescopic soot blower.
Further, described long telescopic soot blower employs nitrogen as soot blowing source of the gas.
The method have the advantages that
On described vaporizer, explosion venting valve is installed, when there is explosion time, explosion venting valve being opened and makes pressure discharge, it is ensured that equipment safety；After hot water in the most described economizer enters described gasification cooling flue extension and described vaporizer, produced saturated steam by flue gas with heat inside it, it is achieved thereby that the abundant recycling to fume afterheat, effectively reduce production cost.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
The structural representation of the flue gas low-temperature section waste heat recovery apparatus of converter that Fig. 1 provides for the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, all other embodiments that those of ordinary skill in the art are obtained on the premise of not making creative work, broadly fall into the scope of protection of the invention.
Such as Fig. 1, the embodiment of the present invention provides a kind of flue gas low-temperature section waste heat recovery apparatus of converter, it is connected to gasification cooling flue 1, including gasification cooling flue extension 2, adiabatic flue 3, vaporizer 4, economizer 6, inertia force dust arrester 7 and exiting flue gas pipeline 8.
Such as Fig. 1, one end of described gasification cooling flue extension 2 is connected with described gasification cooling flue 1, the other end is connected with described adiabatic flue 3, described adiabatic flue 3 is connected with described vaporizer 4, described vaporizer 4 is connected with described economizer 6, described economizer 6 is connected with described inertia force dust arrester 7, and described inertia force dust arrester 7 and described exiting flue gas pipeline 8, described inertia force dust arrester 7 is built-in with scraper ash-transmission machine.Wherein, described gasification cooling flue extension 2 and described vaporizer 4 pass through pipeline connection with described economizer 6 respectively, after hot water in described economizer 6 enters described gasification cooling flue extension 2 and described vaporizer 4, by inside it with heat flue gas produce saturated steam, it is achieved thereby that the abundant recycling to fume afterheat, effectively reduce production cost.On described vapotron, explosion venting valve is installed, when there is explosion time, explosion venting valve being opened and makes pressure discharge, it is ensured that equipment safety.Being provided with double medium spray gun device 9 on described exiting flue gas pipeline 8, for jet atomization drop, atomizing spray plays the quenched effect to flue gas, it is simple to follow-up smart dedusting；Described exiting flue gas pipeline 8 is connected to follow-up cleaner by cleaning shaft, carries out purifying and coal-gas recovering etc..
Such as Fig. 1, it addition, be equipped with long telescopic soot blower 5 on described vaporizer 4 and described economizer 6, it is ensured that the heat exchange efficiency of heat-transfer surface, described long telescopic soot blower 5 employs nitrogen as soot blowing source of the gas.
Such as Fig. 1, the present invention also provides for the recovery method of flue gas low-temperature section waste heat recovery apparatus of a kind of converter, and it comprises the following steps:
Step one: during converter smelting, gasification cooling flue 1 afterbody outlet temperature is that the flue gas of 900 DEG C enters into gasification cooling flue extension 2, through radiation heat transfer in this equipment, flue-gas temperature is cooled in the range of 660 DEG C-680 DEG C, wherein, change thermogenetic heat for heating the hot water from economizer 6 so that it is produce saturated steam；
Step 2: from gasification cooling flue extension 2 flue gas out after adiabatic flue 3, enter in vaporizer 4, through indirect heat exchange in vaporizer 4, flue-gas temperature after heat exchange is in the range of 300 DEG C-320 DEG C, change thermogenetic heat for heating the hot water from economizer 6 so that it is produce saturated steam；Wherein, in order to ensure security of system, vaporizer 4 is provided with explosion venting valve；When explosion time occurs, explosion venting valve is opened and is discharged by pressure, it is ensured that equipment safety；
Step 3: the flue gas after vaporizer 4 heat exchange enters into economizer 6, the heat of flue gas carries out heat exchange by the industry water of 25-35 DEG C, flue-gas temperature be reduced in the range of 200 DEG C-250 DEG C, industry water the hot water of 100 DEG C-110 DEG C formed enters into gasification cooling flue extension 2 by pipeline and vaporizer 4 produces saturated steam；
Step 4: enter into inertia force dust arrester 7 from economizer 6 flue gas out, ash-laden gas is carried out thick dedusting；
Step 5: the flue gas after thick dedusting enters in exiting flue gas pipeline 8, carries out direct heat transfer, in the range of temperature is reduced to 180 ~ 200 DEG C with the atomized drop of double medium spray gun devices 9 ejection being arranged in described exiting flue gas pipeline 8；Atomizing spray plays the quenched effect to flue gas, it is simple to follow-up smart dedusting.
Step 6: carry out follow-up dedusting from exiting flue gas pipeline 8 flue gas out by cleaning shaft, refer specifically to access follow-up dust removal installation, carries out purifying and coal-gas recovering etc..
In sum, explosion venting valve, by being provided with explosion venting valve on vaporizer 4, when there is explosion time, being opened and being made pressure discharge, it is ensured that equipment safety by flue gas low-temperature section waste heat recovery apparatus of described converter；After hot water in the most described economizer 6 enters described gasification cooling flue extension 2 and described vaporizer 4, by inside it with heat flue gas produce saturated steam, it is achieved thereby that the abundant recycling to fume afterheat, effectively reduce production cost.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (3)
1. one kind uses the method that flue gas low-temperature section waste heat recovery apparatus of converter carries out waste heat recovery, it is characterised in that comprise the following steps:
Step one: during converter smelting, gasification cooling flue afterbody outlet temperature is that the flue gas of 900 DEG C enters into gasification cooling flue extension, through radiation heat transfer in this equipment, flue-gas temperature is cooled in the range of 660 DEG C-680 DEG C, wherein, change thermogenetic heat for heating the hot water from economizer so that it is produce saturated steam；
Step 2: from gasification cooling flue extension flue gas out after adiabatic flue, enter in vaporizer, through indirect heat exchange in vaporizer, flue-gas temperature after heat exchange is in the range of 300 DEG C-320 DEG C, change thermogenetic heat for heating the hot water from economizer so that it is produce saturated steam；Wherein, described vaporizer is provided with explosion venting valve；
Step 3: the flue gas after evaporator heat exchange enters into economizer, the heat of flue gas carries out heat exchange by the industry water of 25-35 DEG C, flue-gas temperature be reduced in the range of 200 DEG C-250 DEG C, industry water the hot water of 100 DEG C-110 DEG C formed enters into gasification cooling flue extension by pipeline and vaporizer produces saturated steam；
Step 4: enter into inertia force dust arrester from economizer flue gas out, ash-laden gas is carried out thick dedusting；
Step 5: the flue gas after thick dedusting enters in exiting flue gas pipeline, carries out direct heat transfer, in the range of temperature is reduced to 180 ~ 200 DEG C with the atomized drop of the double medium spray gun devices ejection being arranged in described exiting flue gas pipeline；
Step 6: carry out follow-up dedusting by cleaning shaft from exiting flue gas pipeline flue gas out.
2. recovery method as claimed in claim 1, it is characterised in that: it is equipped with long telescopic soot blower on described vaporizer and described economizer.
3. recovery method as claimed in claim 2, it is characterised in that: described long telescopic soot blower employs nitrogen as soot blowing source of the gas.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410759531.9A CN104611501B (en) | 2014-12-12 | 2014-12-12 | Flue gas low-temperature section waste heat recovery apparatus of converter and method |
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| CN201410759531.9A CN104611501B (en) | 2014-12-12 | 2014-12-12 | Flue gas low-temperature section waste heat recovery apparatus of converter and method |
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| CN104611501A CN104611501A (en) | 2015-05-13 |
| CN104611501B true CN104611501B (en) | 2016-11-30 |
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| CN107164599B (en) * | 2017-06-23 | 2023-03-14 | 中冶赛迪技术研究中心有限公司 | High-temperature combustible gas waste heat recovery system and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1962884A (en) * | 2006-12-07 | 2007-05-16 | 昆明阳光数字技术股份有限公司 | Dry-method dust collection and surplus energy recovery device for steel-smelting converter flue gas |
| CN1971191A (en) * | 2006-12-07 | 2007-05-30 | 昆明阳光数字技术股份有限公司 | Process for recovery of excess energy of flue gas from converter |
| CN101691624A (en) * | 2009-09-21 | 2010-04-07 | 无锡市东方环境工程设计研究所有限公司 | Purifying and recovering process of absolute dry bag-type converter gas negative energy |
| CN102899444A (en) * | 2012-10-26 | 2013-01-30 | 通化市五一环保科技股份有限公司 | System and method for treating converter flue gas |
| CN104004879A (en) * | 2014-06-11 | 2014-08-27 | 中冶南方工程技术有限公司 | Equipment and method for recovering low-temperature-section waste heat of primary converter flue gas |
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2014
- 2014-12-12 CN CN201410759531.9A patent/CN104611501B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1962884A (en) * | 2006-12-07 | 2007-05-16 | 昆明阳光数字技术股份有限公司 | Dry-method dust collection and surplus energy recovery device for steel-smelting converter flue gas |
| CN1971191A (en) * | 2006-12-07 | 2007-05-30 | 昆明阳光数字技术股份有限公司 | Process for recovery of excess energy of flue gas from converter |
| CN101691624A (en) * | 2009-09-21 | 2010-04-07 | 无锡市东方环境工程设计研究所有限公司 | Purifying and recovering process of absolute dry bag-type converter gas negative energy |
| CN102899444A (en) * | 2012-10-26 | 2013-01-30 | 通化市五一环保科技股份有限公司 | System and method for treating converter flue gas |
| CN104004879A (en) * | 2014-06-11 | 2014-08-27 | 中冶南方工程技术有限公司 | Equipment and method for recovering low-temperature-section waste heat of primary converter flue gas |
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Inventor after: Wang Liang Inventor after: Liu Changjian Inventor after: Wang Yonggang Inventor after: Ge Lei Inventor before: Ji Shichang Inventor before: Wang Liang Inventor before: Wang Yonggang Inventor before: Ge Lei |
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