CN102021299B - Device for utilizing residual heat of gas flue in hood-type annealing furnace - Google Patents
Device for utilizing residual heat of gas flue in hood-type annealing furnace Download PDFInfo
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- CN102021299B CN102021299B CN2010105638769A CN201010563876A CN102021299B CN 102021299 B CN102021299 B CN 102021299B CN 2010105638769 A CN2010105638769 A CN 2010105638769A CN 201010563876 A CN201010563876 A CN 201010563876A CN 102021299 B CN102021299 B CN 102021299B
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- 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
The invention discloses a device for utilizing residual heat of gas flue in a hood-type annealing furnace. The 320 DEG C gas flue generated in the hood-type annealing furnace is fed into a total flue through different passageways; the high-temperature gas flue passing through the total flue is cooled to about 250 DEG C in a hot wind heat exchanger; and the 250 DEG C gas flue is cooled to about 150 DEG C in a hot water heat exchanger and then discharged. According to the method and the device disclosed by the invention, two heat exchangers are used, so that the residual heat of the gas flue is recovered maximally; the heat exchangers are of a channel box, thereby ensuring the quality and improving the installation speed; and the heat exchangers are of a bare tube, thus reducing the resistance of the gas flue and avoiding the consequence caused by the blocking of the heat exchanger.
Description
Technical field
The present invention relates to the heat transfer technology field of interchanger, the device that in particular a kind of bell-type annealing furnace flue gas exhaust heat utilizes.
Background technology
At present, the degreasing line in the cold-rolling of steel plate production is that energy consumption is very big with steam or electrically heated and oven dry, and the flue gas that present bell type annealing furnace produces when annealing directly has been discharged in the air through flue.The temperature of the flue gas that general bell type annealing furnace produces can reach 320 ℃, directly drains just a large amount of thermal waste have been fallen, and polluted environment.Through calculating, the heat that heating of degreasing line and baking needed are wanted is 1331 kilowatts, and 10 cover bell-type lehres, can produce has 60000m approximately
3The exhaust gas volumn of/h, its heat can satisfy the needs of heating of degreasing line and oven dry fully.Therefore, can design a covering device and method utilizes the bell-type annealing furnace flue gas exhaust heat.
Summary of the invention
The object of the present invention is to provide a kind of bell-type annealing furnace flue gas exhaust heat use device, be intended to make full use of the fume afterheat that bell type annealing furnace produces.
Technical scheme of the present invention is following: the device that a kind of bell-type annealing furnace flue gas exhaust heat utilizes; Comprise bell type annealing furnace, Cleaning Line drying baker and levelling machine; Wherein, Also comprise main flue and hot blast interchanger, the hot flue gas of the output of said bell type annealing furnace is delivered to main flue through smoke exhaust pipe, and said main flue links to each other through pipeline with the hot blast interchanger; The wind inlet end of hot blast interchanger is connected with a gas blower, is used for blasting cold wind to the hot blast interchanger; The outlet air end of said hot blast interchanger connects Cleaning Line drying baker and levelling machine.
The device that described bell-type annealing furnace flue gas exhaust heat utilizes; Wherein, Said device also comprises a hot water heat exchanger and water tank, and said hot water heat exchanger is connected with the hot blast interchanger through pipeline, and the water inlet of said hot water heat exchanger connects the flowing water Valve of water tank; The water outlet of hot water heat exchanger connects the inlet valve of lye tank, electrolyte tank and hot well tank respectively, hot water is sent into lye tank, electrolyte tank and hot well tank be used for the liquid heat to each case.
The device that described bell-type annealing furnace flue gas exhaust heat utilizes, wherein, the water outlet of said hot water heat exchanger also is connected to the inlet valve of water tank, is used for the heating that circulates of water to water tank.
The device that described bell-type annealing furnace flue gas exhaust heat utilizes, wherein, the outlet side of said hot water heat exchanger also is provided with a vacuum fan, is used for the flue gas after the heat exchange is discharged; And between hot water heat exchanger and vacuum fan, be provided with a volume damper, be used to regulate the cigarette amount size of vacuum fan.
The device that described bell-type annealing furnace flue gas exhaust heat utilizes wherein, adopts tube exchanger in lye tank, electrolyte tank, the hot well tank.
The device that described bell-type annealing furnace flue gas exhaust heat utilizes, wherein, said hot blast interchanger and hot water heat exchanger all adopt the bobbin carriage form.
The device that described bell-type annealing furnace flue gas exhaust heat utilizes, wherein, said hot blast interchanger and hot water heat exchanger adopt the naked pipe formula.
Beneficial effect: present method and device utilize the bell-type annealing furnace flue gas exhaust heat; Satisfy the needs of heating of degreasing line and oven dry; But through 1331 kilowatts of save energy behind the recovery heat, be converted to fire coal and per hour can save 423 kilograms, can practice thrift coal-fired about 10 tons every day; Thereby reached purpose of energy saving, reduced production cost.
Description of drawings
Fig. 1 is a kind of structural representation of device of bell-type annealing furnace flue gas exhaust heat utilization.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, clear and definite, below develop simultaneously embodiment to further explain of the present invention with reference to accompanying drawing.
The principle of work that realizes the utilization of bell-type annealing furnace flue gas exhaust heat is: about 320 ℃ flue gas subchannel that bell type annealing furnace is produced feeds main flue; Cool to about 250 ℃ through the hot blast interchanger earlier through the main flue high-temperature flue gas; 250 ℃ of flue gases cool to about 150 ℃ through hot water heat exchanger again, are discharged in the air at last.Like this, the hot blast interchanger can be with 30 ℃ of temperature, flow 8500m
3The cold wind of/h is heated to 130 ℃, can supply degreasing line drying belt steel to use; Hot water heat exchanger can be with 80 ℃ of temperature, flow 100m
3The water of/h is heated to 86 ℃, and hot water leads to respectively in the device case that needs the hot water heating, and the liquid heat that will install in the case through the tube exchanger that is provided with in the device case arrives needed temperature.
The device that a kind of bell-type annealing furnace flue gas exhaust heat that provides referring to Fig. 1 embodiment of the invention utilizes; Comprise bell type annealing furnace 14, main flue 1, hot blast interchanger 2 and hot water heat exchanger 3; All smoke exhaust pipes 15 of said bell type annealing furnace 14 are connected to main flue 1, and said main flue 1, hot blast interchanger 2 and hot water heat exchanger 3 link to each other through pipeline successively.The outlet air end of hot blast interchanger 2 links to each other with levelling machine 8 with Cleaning Line drying baker 7; Wind inlet end is connected with gas blower 4; Be used to blast air and hot flue gas carries out heat exchange, be heated to 130 ℃ to the wind that blasts from 30 ℃, deliver to then in Cleaning Line drying baker 7 and the levelling machine 8 through hot flue gas; The water inlet of said hot water heat exchanger 3 connects the flowing water Valve of water tank 9, and the water outlet of hot water heat exchanger 3 connects the inlet valve of water tank 9, lye tank 10, electrolyte tank 11 and hot well tank 12 respectively.Water pump 13 is sent the water in the water tank 9 into hot water heat exchanger 3; Deliver to lye tank 10, electrolyte tank 11 and hot well tank 12 respectively after being heated to 86 ℃ through hot cigarette, be heated to needed temperature to alkali lye, electrolytic solution, water through the tube exchanger that is provided with in each case.
The water-in of said lye tank 10, electrolyte tank 11 and hot well tank 12 is provided with valve, can select whether need feed hot water.The inlet valve that the water outlet of said hot water heat exchanger 3 is connected to water tank 9 is to be used for when the Cleaning Line stopping production does not need heat, and bell furnace can not stop, so through opening this valve to the heating of the water cycle in the water tank 9, prevent that high-temperature flue gas from damaging interchanger.
The outlet side of hot water heat exchanger 3 also is connected with a vacuum fan 5, is used for the flue gas of having lowered the temperature is discharged; Also be connected with a volume damper 6 between hot water heat exchanger 3 and the vacuum fan 5, be used to control the velocity of flow of flue gas, guarantee that hot blast interchanger 2 and hot water heat exchanger 3 can absorb the heat of hot flue gas fully.
Wherein hot blast interchanger and hot water heat exchanger adopt the bobbin carriage form, are convenient to install.Two interchanger have all adopted the naked pipe formula, have reduced the resistance of flue gas, avoid interchanger to stop up the potential safety hazard of bringing.
The concrete grammar that a kind of bell-type annealing furnace flue gas exhaust heat utilizes:
Step 1, flue gas is sent into main flue:
320 ℃ of flue gas subchannels that bell type annealing furnace is produced feed main flue 1;
Step 2, flue gas and hot blast interchanger and hot water heat exchanger carry out energy exchange, and the heat of flue gas is made full use of:
Cool to about 250 ℃ through hot blast interchanger 2 earlier through main flue 1 high-temperature flue gas, 250 ℃ of flue gases cool to about 150 ℃ through hot water heat exchanger 3 again:
Hot blast interchanger 2 can be with 30 ℃ of temperature, flow 8500m with the cold wind heating of gas blower 4 suction
3The cold wind of/h is heated to 130 ℃, and delivers to Cleaning Line drying baker 7 and levelling machine 8 to hot blast through pipeline, is used for air-dry hot blast and purging;
Hot water heat exchanger 3 will heat from the water that water tank 9 flows into, can be with 80 ℃ of temperature, flow 100m
3/ h cold water is heated to 86 ℃, then hot water is delivered to lye tank 10, electrolyte tank 11 and hot well tank 12 respectively, is heated to needed temperature to alkali lye, electrolytic solution, water through the tube exchanger that is provided with in the case; Cooled water is back to pipeline in the water tank 9, recycles;
Step 3, flue gas is discharged:
The flue gas that cools to 150 ℃ is extracted discharging out through vacuum fan 5.
Should be understood that application of the present invention is not limited to above-mentioned giving an example, concerning those of ordinary skills, can improve or conversion that all these improvement and conversion all should belong to the protection domain of accompanying claims of the present invention according to above-mentioned explanation.
Claims (1)
1. the device that utilizes of a bell-type annealing furnace flue gas exhaust heat; Comprise bell type annealing furnace, Cleaning Line drying baker and levelling machine; It is characterized in that; Also comprise main flue and hot blast interchanger, the hot flue gas of the output of said bell type annealing furnace is delivered to main flue through smoke exhaust pipe, and said main flue links to each other through pipeline with the hot blast interchanger; The wind inlet end of hot blast interchanger is connected with a gas blower, is used for blasting cold wind to the hot blast interchanger; The outlet air end of said hot blast interchanger connects Cleaning Line drying baker and levelling machine;
Said device also comprises a hot water heat exchanger and water tank; Said hot water heat exchanger is connected with the hot blast interchanger through pipeline; The water inlet of said hot water heat exchanger connects the flowing water Valve of water tank; The water outlet of hot water heat exchanger connects the inlet valve of lye tank, electrolyte tank and hot well tank respectively, hot water is sent into lye tank, electrolyte tank and hot well tank be used for the liquid heat to each case; The water outlet of said hot water heat exchanger also is connected to the inlet valve of water tank, is used for the heating that circulates of water to water tank; The outlet side of said hot water heat exchanger also is provided with a vacuum fan, is used for the flue gas after the heat exchange is discharged; And between hot water heat exchanger and vacuum fan, be provided with a volume damper, be used for the heat that hot blast interchanger and hot water heat exchanger can absorb hot flue gas fully.
2. the device that bell-type annealing furnace flue gas exhaust heat according to claim 1 utilizes is characterized in that, adopts tube exchanger in lye tank, electrolyte tank, the hot well tank.
3. the device that bell-type annealing furnace flue gas exhaust heat according to claim 1 utilizes is characterized in that said hot blast interchanger and hot water heat exchanger all adopt the bobbin carriage form.
4. the device that bell-type annealing furnace flue gas exhaust heat according to claim 1 utilizes is characterized in that, said hot blast interchanger and hot water heat exchanger adopt the naked pipe formula.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105638769A CN102021299B (en) | 2010-11-29 | 2010-11-29 | Device for utilizing residual heat of gas flue in hood-type annealing furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105638769A CN102021299B (en) | 2010-11-29 | 2010-11-29 | Device for utilizing residual heat of gas flue in hood-type annealing furnace |
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| Publication Number | Publication Date |
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| CN102021299A CN102021299A (en) | 2011-04-20 |
| CN102021299B true CN102021299B (en) | 2012-11-14 |
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| CN2010105638769A Expired - Fee Related CN102021299B (en) | 2010-11-29 | 2010-11-29 | Device for utilizing residual heat of gas flue in hood-type annealing furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104266496A (en) * | 2014-08-11 | 2015-01-07 | 浙江龙盛薄板有限公司 | Waste heat recovery system of full-hydrogen bell-type annealing furnace |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865747B (en) * | 2012-08-31 | 2014-08-20 | 中机工程（西安）启源工程有限公司 | Smoke afterheat utilization system and smoke afterheat utilization method for electrical porcelain kiln group |
| CN104792146A (en) * | 2015-04-07 | 2015-07-22 | 北京京诚之星科技开发有限公司 | Waste heat recovery device used for continuous powder coating production line curing oven |
| CN108034958A (en) * | 2017-12-27 | 2018-05-15 | 江苏刚正薄板科技有限公司 | A kind of UTILIZATION OF VESIDUAL HEAT IN heats steel plate pre-treatment water installations indirectly |
| CN109136490A (en) * | 2018-09-27 | 2019-01-04 | 浙江华赢特钢科技有限公司 | A kind of orientation silicon steel environmental protection process equipment and environmental protection processing method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201021455Y (en) * | 2007-02-14 | 2008-02-13 | 丁永健 | Novel residual heat utilization furnace |
| CN101173324A (en) * | 2006-10-31 | 2008-05-07 | 黄石山力科技发展有限公司 | Novel technique for comprehensive utilization of continuous strip annealing furnace flue gas exhaust heat and device thereof |
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- 2010-11-29 CN CN2010105638769A patent/CN102021299B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101173324A (en) * | 2006-10-31 | 2008-05-07 | 黄石山力科技发展有限公司 | Novel technique for comprehensive utilization of continuous strip annealing furnace flue gas exhaust heat and device thereof |
| CN201021455Y (en) * | 2007-02-14 | 2008-02-13 | 丁永健 | Novel residual heat utilization furnace |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104266496A (en) * | 2014-08-11 | 2015-01-07 | 浙江龙盛薄板有限公司 | Waste heat recovery system of full-hydrogen bell-type annealing furnace |
| CN104266496B (en) * | 2014-08-11 | 2016-03-09 | 浙江龙盛薄板有限公司 | Full Hydrogen Bell Type Annealing Furnace residual neat recovering system |
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| CN102021299A (en) | 2011-04-20 |
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Granted publication date: 20121114 Termination date: 20161129 |