CN106766958A - For the bypass heat circulating system and application method of industrial furnace waste heat recovery - Google Patents
For the bypass heat circulating system and application method of industrial furnace waste heat recovery Download PDFInfo
- Publication number
- CN106766958A CN106766958A CN201611222894.4A CN201611222894A CN106766958A CN 106766958 A CN106766958 A CN 106766958A CN 201611222894 A CN201611222894 A CN 201611222894A CN 106766958 A CN106766958 A CN 106766958A
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- China
- Prior art keywords
- smoke
- waste heat
- heat boiler
- bypass line
- bypass
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/001—Extraction of waste gases, collection of fumes and hoods used therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
Bypass heat circulating system and application method the present invention relates to be used for industrial furnace waste heat recovery, smoke-exhaust pipeline parallel connection bypass line after heating furnace, bypass line is relatively independent with smoke-exhaust pipeline, specifically include smoke-exhaust pipeline, bypass line, smoke exhaust fan, by-passing valve, waste heat boiler, circulating fan, the air outlet of smoke exhaust fan is connected with smoke-exhaust pipeline one end, bypass line one end respectively, and the smoke-exhaust pipeline other end, the bypass line other end are connected after being connected with chimney；By-passing valve is connected with smoke-exhaust pipeline；It is connected with waste heat boiler, circulating fan on bypass line in turn, the air outlet of circulating fan is connected with chimney.Advantage is：Industrial furnace is not influenceed to produce, system architecture is simple, it is easy to accomplish, can reach increase waste heat boiler yield, systems stabilisation pressure, it is ensured that normal production.In heat treatment heating furnace low yield, by the air quantity stabilization of circulating fan, the generation of smoke exhaust fan surge can be prevented.
Description
Technical field
Followed the invention belongs to metallurgical industrial furnace application field, more particularly to a kind of bypass heat for industrial furnace waste heat recovery
Loop systems and application method.
Background technology
Iron-smelting process, hot rolling technology, 300-600 DEG C of middle temperature flue gas of the heating furnace discharge of cold-rolling process are looked forward in national steel
80% is discharged into air in industry, at the same time, in production process needs a large amount of middle Low Temperature Steams, is produced with coal-burning boiler,
Production cost is increased, energy significant wastage is caused.In view of the foregoing, we are by the full-range heating furnace discharge of Anshan iron and steel plant
Warm flue gas is all reclaimed, and produces overheat and saturated vapor to be used to produce, and 60,000 tons of standard coals can be saved every year.
It is to improve energy utilization rate that we reclaim generation steam, i.e. waste heat boiler recovery waste heat using waste heat boiler mode
Important means, the fume afterheat of metallurgy industry nearly 80% is reclaimed by waste heat boiler, realizes changing waste into resources.
We have found in produce reality, when waste heat boiler recovery waste heat is installed after industrial furnace additional, the life of waste heat boiler
The furnace pressure that change directly influences heating furnace is produced, the furnace pressure for producing heating furnace is difficult control in previous level, in production kind
When changing big, the controling of the pressure of the oven of heating furnace not, directly affects production.Simultaneously because the flue gas that inside heating furnace is reclaimed by boiler
Temperature is low, and flow is small, influences waste heat recovery efficiency.Therefore, we are to ensure the normal production of heating furnace and waste heat boiler production capacity most
Bigization, we are researched and developed and are applied to this.
Because heating furnace production efficiency normal range of operation is in 50%-90%, and change with production variety variations,
Flue-gas temperature, flow is so resulted in often to change.Increasing is built waste heat boiler and directly affects heating furnace production after heating furnace
Stabilization, because flue gas can be compression, causes the induced-draft fan of waste heat boiler to adjust delayed, makes heating furnace induced-draft fan to ensure stove
The numerous adjustment of voltage-frequency, furnace pressure fluctuation is very big.
If be not adjusted in waste heat boiler production technology, simply carried out in waste heat boiler induced-draft fan control program excellent
Change and perfect, then heating furnace production stabilization can only be ensured when heating furnace production kind is fixed, just do not adjusted during variety variations.
The content of the invention
To overcome the deficiencies in the prior art, it is an object of the invention to provide a kind of bypass heat for industrial furnace waste heat recovery
The circulatory system and application method, original industrial furnace production model is not changed, makes the middle low-temperature flue gas waste heat of steel mill's industrial furnace discharge
Retracting device increases production capacity, while stablizing industrial furnace production again.
To achieve the above object, the present invention is achieved through the following technical solutions：
For the bypass heat circulating system of industrial furnace waste heat recovery, the smoke-exhaust pipeline parallel connection bypass line after heating furnace,
Bypass line is relatively independent with smoke-exhaust pipeline, specifically includes smoke-exhaust pipeline, bypass line, smoke exhaust fan, by-passing valve, waste heat pot
Stove, circulating fan, the air outlet of smoke exhaust fan are connected with smoke-exhaust pipeline one end, bypass line one end respectively, and smoke-exhaust pipeline is another
End, the bypass line other end are connected after being connected with chimney；By-passing valve is connected with smoke-exhaust pipeline；It is sequentially connected on bypass line
Have a surplus heat boiler, circulating fan, the air outlet of circulating fan is connected with chimney；Flue gas is back to waste heat boiler by by-passing valve,
Exhaust-heat boiler flue gas flow is set to reach stabilization.
Described smoke exhaust fan is connected with heating furnace.
Inlet valve is connected with the bypass line that waste heat boiler is connected with smoke exhaust fan.
For the application method of the bypass heat circulating system of industrial furnace waste heat recovery,
Bypass line is relatively independent with smoke-exhaust pipeline, and when waste heat boiler needs shutdown maintenance, the flue gas of waste heat boiler is not
Influence main line production；
When smoke yields are excessive, flue gas is discharged simultaneously by smoke-exhaust pipeline and bypass line, enables production system
Stable operation；
When smoke yields are few, flue gas passes through waste heat boiler recovered flue gas, it is ensured that by the velocity of flue gas of waste heat boiler,
Make pressure stability in waste heat boiler, improve residual heat boiler for exchanging heat efficiency, reduce exhaust gas temperature, improve waste heat boiler steam production；
When smoke yields are very few, when flue gas is not sufficient to ensure that waste heat boiler furnace pressure stabilization by waste heat boiler,
By by-passing valve and circulating fan, pumpback chimney smoke makes the smoke backflow of bypass line, it is ensured that by the flue gas of waste heat boiler
Speed, makes pressure stability in waste heat boiler；
In heat treatment heating furnace low yield, the smoke backflow of bypass line makes by the air quantity stabilization of induced-draft fan, the row of preventing
The generation of cigarette blower fan surge；
When output change brings smoke evacuation pressure change, being adjusted by circulating fan makes bypass line pressure constant.
Compared with prior art, the beneficial effects of the invention are as follows：
The purpose for increasing this circulatory system in the industrial furnace rear end of original heat treatment to realize not influenceing industrial furnace to produce, be
System simple structure, it is easy to accomplish, can reach increase waste heat boiler yield, systems stabilisation pressure, it is ensured that normal production.Can ensure
In heat treatment heating furnace low yield, by the air quantity stabilization of waste heat boiler, the generation of smoke exhaust fan surge can be prevented.By side
Siphunculus road, by-passing valve, smoke-exhaust pipeline, waste heat boiler, the pressure stabilizing system of circulating fan composition self-regulation, heating furnace output
Change bring smoke evacuation pressure change when, the pressure in the stove of waste heat boiler is constant, does not influence so main line heating furnace normal
Regulation.When exhaust gas volumn is excessive, unnecessary flue gas can be emitted by bypass line, without closing residual neat recovering system,
Residual neat recovering system is set to adapt to various working environments.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Fig. 2 is structural representation of the invention two.
Fig. 3 is iron making and sintering central cooler waste heat reclaiming process flow chart.
Fig. 4 is hot rolling residual neat recovering system process chart.
Fig. 5 is cold-rolling galvanization line heat treatment residual neat recovering system process chart.
In figure：1- heating furnace 2- smoke exhaust fan 3- by-passing valve 4- chimney 5- waste heat boiler 6- circulating fans 7- discharges fume
Pipeline 8- bypass line 9- inlet valve 10- valves.
Specific embodiment
The present invention is described in detail with reference to Figure of description, it should be noted that implementation of the invention is not limited
In following implementation method.
See Fig. 1, for the bypass heat circulating system of industrial furnace waste heat recovery, the smoke-exhaust pipeline 7 after heating furnace 1 is in parallel other
Siphunculus road 8, bypass line 8 is relatively independent with smoke-exhaust pipeline 7, specifically includes smoke-exhaust pipeline 7, bypass line 8, smoke exhaust fan 2, side
Port valve 3, waste heat boiler 5, circulating fan 6, the air outlet of smoke exhaust fan 2 respectively with the one end of smoke-exhaust pipeline 7, the one end of bypass line 8
Connection, the other end of smoke-exhaust pipeline 7, the other end of bypass line 8 are connected after being connected with chimney 4；Bypass is connected with smoke-exhaust pipeline 7
Valve 3；It is connected with waste heat boiler 5, circulating fan 6 on bypass line 8 in turn, the air outlet of circulating fan 6 is connected with chimney 4；Cigarette
Gas is back to waste heat boiler 5 by by-passing valve 3, the flue gas flow of waste heat boiler 5 is reached stabilization.
Wherein, smoke exhaust fan 2 is connected with heating furnace 1.See Fig. 2, the bypass pipe that waste heat boiler 5 is connected with smoke exhaust fan 2
Inlet valve 9 is connected with road 8.
For the application method of the bypass heat circulating system of industrial furnace waste heat recovery,
Bypass line 8 is relatively independent with smoke-exhaust pipeline 7, when waste heat boiler 5 needs shutdown maintenance, the cigarette of waste heat boiler 5
Gas does not influence main line to produce；
When smoke yields are excessive, flue gas is discharged simultaneously by smoke-exhaust pipeline 7 and bypass line 8, enables production system
Enough stable operation；
When smoke yields are few, flue gas passes through the recovered flue gas of waste heat boiler 5, it is ensured that by the flue gas speed of waste heat boiler 5
Degree, makes pressure stability in waste heat boiler 5, improves the heat exchange efficiency of waste heat boiler 5, reduces exhaust gas temperature, improves the steam of waste heat boiler 5
Yield；
When smoke yields are very few, flue gas is not sufficient to ensure that the furnace pressure of waste heat boiler 5 stabilization by waste heat boiler 5
When, by by-passing valve 3 and circulating fan 6, the flue gas of pumpback chimney 4 makes the smoke backflow of bypass line 8, it is ensured that by waste heat pot
The velocity of flue gas of stove 5, makes pressure stability in waste heat boiler 5；
In 1 low yield of heat treatment heating furnace, the smoke backflow 20%-30% of bypass line 8 makes by the air quantity of induced-draft fan
Stabilization, prevents the generation of the surge of smoke exhaust fan 2；
When output change brings smoke evacuation pressure change, being adjusted by circulating fan 6 makes the pressure of bypass line 8 constant.
Embodiment 1
See Fig. 3, one section, two sections of the flat sintering circular-cooler of iron-smelter 260 has 2 450,000 cooling blower of vertical/hour (smoke evacuations
Blower fan 2), one section of discharge flue-gas temperature at 300 DEG C -500 DEG C, two sections of flue gases of discharge at 200 DEG C -300 DEG C, be this newly-built one
50 tons of dual temperature waste heat boilers 5 of seat, produce 38 tons of superheated steams and 12 tons of saturated vapors respectively, and one 900,000 is increased in systems
Vertical/hour circulating fan 6, during 150 DEG C of flue gases after waste heat boiler 5 is lowered the temperature are returned into one section of central cooler, two sections respectively again
Circulating cooling.
Embodiment 2
See Fig. 4, every production line discharge flue-gas temperature of hot rolling at 350 DEG C -550 DEG C, flue gas flow 80,000 vertical/hours~
170000 vertical/hours, regulation is used as power source mainly by chimney 4, and centre sets a regulating valve to adjust the pressure of heating furnace 1, increases three newly
Waste heat boiler 5, every waste heat boiler 5 steams in the superheated steam of 12.5 ton hours, is corresponded with heating furnace 1, waste heat boiler
Increase inlet valve 9 before 5, increasing the circulating fan 6 of one 170,000 vertical/hour in every set system of waste heat boiler 5 is circulated, and follows
Increase valve 10 after ring blower fan 6, original regulating valve becomes by-passing valve 3 and flows back a part of flue gas, makes the flue gas flow of waste heat boiler 5
Peak Flow Rate is remained, so as to ensure the production stabilization of waste heat boiler 5.
Embodiment 3
See Fig. 5, cold rolling heat-treatment lines daily production line discharge flue gas design is in 140,000 vertical/hours, point three partial discharges
(rapid cooling section, non-oxidation section, radiation pipeline section) three parts have three to be discharged into a smoke-exhaust pipeline 7 by the row of chimney 4 respectively
Put, actual discharge flue gas flow between 6~90,000 vertical/hours, temperature between 300 DEG C -450 DEG C, in smoke exhaust fan 2 and cigarette
Increase residual neat recovering system (waste heat boiler 5) between chimney 4, one 90,000 circulating fan 6 of vertical/hour increased in systems, it is ensured that
The flue gas flow of waste heat boiler 5 stabilization does not influence main line to produce simultaneously in maximum, the production stabilization of waste heat boiler 5.
The present invention adjusts the internal pressure of waste heat boiler 5 using a kind of bypass circulatory system adjustment internal pressure by control
It is whole to stable state, while also ensureing heating furnace 1 furnace pressure stabilization.Due to newly increasing thermal cycle pipeline, waste-heat recovery device is improved
Inside smoke temperature, reduces smog discharge temperature, so as to improve heat recovery steam yield.
Claims (4)
1. the bypass heat circulating system of industrial furnace waste heat recovery is used for, it is characterised in that the smoke-exhaust pipeline after heating furnace is in parallel
Bypass line, bypass line is relatively independent with smoke-exhaust pipeline, specifically includes smoke-exhaust pipeline, bypass line, smoke exhaust fan, bypass
Valve, waste heat boiler, circulating fan, the air outlet of smoke exhaust fan are connected with smoke-exhaust pipeline one end, bypass line one end respectively, smoke evacuation
The pipeline other end, the bypass line other end are connected after being connected with chimney；By-passing valve is connected with smoke-exhaust pipeline；On bypass line
It is connected with waste heat boiler, circulating fan in turn, the air outlet of circulating fan is connected with chimney；Flue gas is back to remaining by by-passing valve
Heat boiler, makes exhaust-heat boiler flue gas flow reach stabilization.
2. the bypass heat circulating system for industrial furnace waste heat recovery according to claim 1, it is characterised in that described
Smoke exhaust fan is connected with heating furnace.
3. the bypass heat circulating system for industrial furnace waste heat recovery according to claim 1, it is characterised in that waste heat pot
Inlet valve is connected with the bypass line that stove is connected with smoke exhaust fan.
4. according to claim 1-3 any one for industrial furnace waste heat recovery bypass heat circulating system user
Method, it is characterised in that
Bypass line is relatively independent with smoke-exhaust pipeline, and when waste heat boiler needs shutdown maintenance, the flue gas of waste heat boiler does not influence
Main line is produced；
When smoke yields are excessive, flue gas is discharged simultaneously by smoke-exhaust pipeline and bypass line, production system is stablized
Operation；
When smoke yields are few, flue gas passes through waste heat boiler recovered flue gas, it is ensured that by the velocity of flue gas of waste heat boiler, makes remaining
Hot pot furnace pressure stabilization, improves residual heat boiler for exchanging heat efficiency, reduces exhaust gas temperature, improves waste heat boiler steam production；
When smoke yields are very few, when flue gas is not sufficient to ensure that waste heat boiler furnace pressure stabilization by waste heat boiler, pass through
By-passing valve and circulating fan, pumpback chimney smoke make the smoke backflow of bypass line, it is ensured that by the flue gas speed of waste heat boiler
Degree, makes pressure stability in waste heat boiler；
In heat treatment heating furnace low yield, the smoke backflow of bypass line makes, by the air quantity stabilization of induced-draft fan, to prevent Smoke
The generation of machine surge；
When output change brings smoke evacuation pressure change, being adjusted by circulating fan makes bypass line pressure constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611222894.4A CN106766958A (en) | 2016-12-27 | 2016-12-27 | For the bypass heat circulating system and application method of industrial furnace waste heat recovery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201611222894.4A CN106766958A (en) | 2016-12-27 | 2016-12-27 | For the bypass heat circulating system and application method of industrial furnace waste heat recovery |
Publications (1)
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| CN106766958A true CN106766958A (en) | 2017-05-31 |
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| CN201611222894.4A Pending CN106766958A (en) | 2016-12-27 | 2016-12-27 | For the bypass heat circulating system and application method of industrial furnace waste heat recovery |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107551790A (en) * | 2017-09-29 | 2018-01-09 | 江苏亿金环保科技有限公司 | A kind of urgent bypass protection system of boiler flue gas desulfurization EGR |
| CN108253809A (en) * | 2018-01-15 | 2018-07-06 | 鞍钢集团工程技术有限公司 | A kind of walking beam furnace controling of the pressure of the oven method |
| CN110388651A (en) * | 2019-07-18 | 2019-10-29 | 薛军 | Boiler exhaust gas bridge type bypasses fine filtering device |
| CN111322265A (en) * | 2020-04-27 | 2020-06-23 | 乔治洛德方法研究和开发液化空气有限公司 | Anti-surge system of centrifugal compressor and control method |
| CN112524962A (en) * | 2020-08-20 | 2021-03-19 | 云南江磷集团股份有限公司 | Yellow phosphorus electric furnace tail gas recovery and purification process |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03199892A (en) * | 1989-12-27 | 1991-08-30 | Sumitomo Metal Ind Ltd | Control of amount of supply gas for waste heat boiler |
| JPH10158656A (en) * | 1996-12-04 | 1998-06-16 | Nippon Steel Corp | Dry coke quencher |
| CN104132554A (en) * | 2014-08-04 | 2014-11-05 | 常州德峰节能电力工程技术有限公司 | Energy saving device for cyclic utilization of smoke of open smoke hood type silicon submerged arc furnace |
| CN204779646U (en) * | 2015-07-17 | 2015-11-18 | 无锡亿恩科技股份有限公司 | Novel two -period form converter coal gas waste heat recovery system |
| CN106247301A (en) * | 2016-10-10 | 2016-12-21 | 南京凯盛开能环保能源有限公司 | A kind of steel-smelting electric furnace fume afterheat efficient system for reclaiming and method |
-
2016
- 2016-12-27 CN CN201611222894.4A patent/CN106766958A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03199892A (en) * | 1989-12-27 | 1991-08-30 | Sumitomo Metal Ind Ltd | Control of amount of supply gas for waste heat boiler |
| JPH10158656A (en) * | 1996-12-04 | 1998-06-16 | Nippon Steel Corp | Dry coke quencher |
| CN104132554A (en) * | 2014-08-04 | 2014-11-05 | 常州德峰节能电力工程技术有限公司 | Energy saving device for cyclic utilization of smoke of open smoke hood type silicon submerged arc furnace |
| CN204779646U (en) * | 2015-07-17 | 2015-11-18 | 无锡亿恩科技股份有限公司 | Novel two -period form converter coal gas waste heat recovery system |
| CN106247301A (en) * | 2016-10-10 | 2016-12-21 | 南京凯盛开能环保能源有限公司 | A kind of steel-smelting electric furnace fume afterheat efficient system for reclaiming and method |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107551790A (en) * | 2017-09-29 | 2018-01-09 | 江苏亿金环保科技有限公司 | A kind of urgent bypass protection system of boiler flue gas desulfurization EGR |
| CN108253809A (en) * | 2018-01-15 | 2018-07-06 | 鞍钢集团工程技术有限公司 | A kind of walking beam furnace controling of the pressure of the oven method |
| CN110388651A (en) * | 2019-07-18 | 2019-10-29 | 薛军 | Boiler exhaust gas bridge type bypasses fine filtering device |
| CN111322265A (en) * | 2020-04-27 | 2020-06-23 | 乔治洛德方法研究和开发液化空气有限公司 | Anti-surge system of centrifugal compressor and control method |
| CN112524962A (en) * | 2020-08-20 | 2021-03-19 | 云南江磷集团股份有限公司 | Yellow phosphorus electric furnace tail gas recovery and purification process |
| CN112524962B (en) * | 2020-08-20 | 2022-08-02 | 云南江磷集团股份有限公司 | Yellow phosphorus electric furnace tail gas recovery and purification process |
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