CN204085215U - A kind of electrical arc furnace flue gas waste heat utilization device - Google Patents
A kind of electrical arc furnace flue gas waste heat utilization device Download PDFInfo
- Publication number
- CN204085215U CN204085215U CN201420564831.7U CN201420564831U CN204085215U CN 204085215 U CN204085215 U CN 204085215U CN 201420564831 U CN201420564831 U CN 201420564831U CN 204085215 U CN204085215 U CN 204085215U
- Authority
- CN
- China
- Prior art keywords
- flue gas
- heat
- waste
- arc furnace
- electrical arc
- 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.)
- Expired - Fee Related
Links
Classifications
-
- 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
Landscapes
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model discloses a kind of electrical arc furnace flue gas waste heat utilization device, comprise the combustion settling chamber be connected with the exhanst gas outlet of electrical arc furnace, the exhanst gas outlet of combustion settling chamber is connected with the high-temperature flue gas entry of Waste-heat boiler, export from the low-temperature flue gas of Waste-heat boiler after heat transfer water in high-temperature flue gas and heat exchanger tube and discharge, the bottom of heat exchanger tube is connected with and stores drum; The low-temperature flue gas outlet of Waste-heat boiler is connected with dust removing purifier, and dust removing purifier is connected with aiutage through dedusting fan.The utility model had both taken full advantage of the waste heat in flue gas; turn avoid the defect that flue gas directly heats steel scrap; achieve again being separated of fuel gas and bulky grain precipitum in high-temperature flue gas simultaneously, turned round and look at heat energy utilization and environmental protection, and energy-saving effect is obvious.
Description
Technical field
The utility model belongs to electrical arc furnace technical field of waste heat utilization, relates to a kind of electrical arc furnace flue gas waste heat utilization device.
Background technology
Electrical arc furnace is by the electric arc produced that discharges between electrode and furnace charge, makes electric energy change heat energy in arc light, and by the direct effect heating of arc radiation and electric arc and deposite metal furnace charge and slag, smelts the qualified steel of various composition and alloy.Electrical arc furnace is thermal source with electric energy, have avoid that combustion fuel pollutes molten steel, the conversion of the thermal efficiency high, electric heating convenient easily to control etc. specific; And electric-arc furnace steelmaking can also be dissolved steel scrap, is a kind of iron resource recycling process.Utilize electrical arc furnace can promote the utilization of steel scrap, steel scrap, as can not get effective recovery and utilization, will become huge latency environment pollution sources.
In electrical arc furnace smelting process, its produce the heat entrained by waste gas be about to electric furnace input gross energy about 11%, have up to 20%, can be wasted in vain if this part energy is not utilized.Furnace gas energy loss has two kinds: the physical sensible heat that (1) high-temperature furnace gas is taken away: the chemical energy that (2) furnace gas combustible component is taken away.Wherein chemical UTILIZATION OF VESIDUAL HEAT IN mainly carries out second-time burning in electrical arc furnace, and utilizes the physical thermal preheating scrap of high-temperature furnace gas to put into practice for many years.The kind of scrap steel preheating technology comprises: expect basket, twin furnace shell-type, shaft furnace type, multistage shaft furnace formula, continuous charging formula etc.Substantially all scrap steel preheating technology are all before high-temperature furnace gas discharge, produce heat exchange by steel scrap (furnace charge), heat is passed to steel scrap, improve the temperature of steel scrap, thus reach quickening steel scrap (furnace charge) fusing, reduction power consumption, the object boosted productivity.But in the process at flue gas steel scrap, element (as elements such as Zn, Sn, Pb) harmful to steel-making in flue dust produces enrichment, have adverse influence to the product quality of smelting, in the process of scrap steel preheating, noxious material (such as dioxin) can impact environment simultaneously.
In recent years due to the restriction of scrap resources, electrical arc furnace starts generally to use liquid iron charging technology.Liquid iron charging provides a large amount of physical thermals and chemical heat, decreases charging number of times, improves arc burning condition, particularly avoids the pollution that in steel scrap, residual metal element brings, and is efficient, the energy-conservation first-selected condition of electric-arc furnace steelmaking.But after use molten iron, electric arc furnaces discharge flue-gas temperature increases, maximum temperature can reach 1400 DEG C, the heat taken away with obvious heat of smoke accounts for 13 ~ 20% of total input heat, so improve flue gas heat recovery rate, improve the environment friendly that waste heat uses, be present stage electrical arc furnace efficient low-consume produce the problem that must solve.
Utility model content
The technical problem that the utility model solves is to provide a kind of electrical arc furnace flue gas waste heat utilization device, by this, sedimentation is carried out to high-temperature flue gas, recycling heat pipe evaporator is by waste heat conversion, both achieved high-temperature flue gas heat recovery, avoid directly heating steel scrap, can the depollution of environment be realized again.
The utility model is achieved through the following technical solutions:
A kind of electrical arc furnace flue gas waste heat utilization device, comprise the combustion settling chamber be connected with the exhanst gas outlet of electrical arc furnace, the exhanst gas outlet of combustion settling chamber is connected with the high-temperature flue gas entry of Waste-heat boiler, export from the low-temperature flue gas of Waste-heat boiler after heat transfer water in high-temperature flue gas and heat exchanger tube and discharge, the bottom of heat exchanger tube is connected with and stores drum; The low-temperature flue gas outlet of Waste-heat boiler is connected with dust removing purifier, and dust removing purifier is connected with aiutage through dedusting fan.
Described combustion settling chamber, by exhaust gases passes, is connected with the 4th hole flue on the bell of electrical arc furnace; Exhaust gases passes comprises mobile flue and air supply section, and described mobile flue is bend pipe, and air supply section also offers blow valve.
Described combustion settling chamber comprises combustion chamber and expansion chamber, and the fuel gas in the flue gas that electrical arc furnace is discharged burns in a combustion chamber, and bulky grain thing is deposited in expansion chamber; All and combustion chamber, and its opening all upward for the smoke inlet of combustion settling chamber and exhanst gas outlet.
The cold wind mixer selector valve regulating flue gas exit temperature is also provided with before the exhanst gas outlet of described combustion settling chamber.
The heat exchanger tube of described Waste-heat boiler comprises multiple heat exchange unit, high-temperature flue gas lead to outside heat exchange unit Waste-heat boiler low-temperature flue gas outlet, each heat exchange unit successively with the flue gas heat exchange passed through.
Described dust removing purifier is sack cleaner, and the entrance of sack cleaner is also provided with the cold wind mixer selector valve regulating flue gas to enter temperature.
Compared with prior art, the utility model has following useful technique effect:
The electrical arc furnace flue gas waste heat utilization device that the utility model provides, by combustion settling chamber and the Waste-heat boiler of setting after the outlet of electrical arc furnace high-temperature flue gas, by high-temperature flue gas by being converted to steam-energy after aftercombustion, both the waste heat in flue gas had been taken full advantage of, turn avoid the defect that flue gas directly heats steel scrap, achieve again being separated of fuel gas and bulky grain precipitum in high-temperature flue gas simultaneously, the heat exchanger tube of follow-up Waste-heat boiler too much can not be deposited, affect heat transfer efficiency and working life; And be conducive to follow-up dedusting, avoid the pollution to environment.
The electrical arc furnace flue gas waste heat utilization device that the utility model provides, achieves the doulbe-sides' victory of waste heat recovery and environmental improvement, and can regulate flue-gas temperature at links; For realizing the Thorough combustion in combustion settling chamber, need when flue gas enters combustion settling chamber to suck outside air, for the second-time burning of the CO accumulated in combustion chamber; Arrange mixer selector valve in combustion settling chamber outlet to control, within 800 DEG C, to ensure that the working environment of Waste-heat boiler to regulate flue gas exit temperature; Carry out heat exchange in Waste-heat boiler after, flue gas exit temperature can drop to about 160 DEG C to enter deduster purification, and the saturated vapor that heat pipe boiler is produced is accumulated among drum, for production and life; And the mixer selector valve of deduster purification entrance also ensure that its temperature entered can not more than 160 DEG C.
The electrical arc furnace flue gas waste heat utilization device that the utility model provides; heat energy utilization and environmental protection are taken into account; and energy-saving effect is obvious; avoid the defect of flue gas to scrap heating; the energy be accumulated in drum can change functional mode as required, has also enriched the means of energy supply.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is electrical arc furnace exhanst gas outlet and expansion chamber entrance connection diagram;
Fig. 3 is smoke entrance schematic diagram in expansion chamber;
Wherein: 1 is electrical arc furnace; 2 is exhaust gases passes; 3 is combustion settling chamber; 4 is Waste-heat boiler; 5 for storing drum; 6 is dust removing purifier; 7 is dedusting fan; 8 is aiutage; 9 is the 4th hole flue; 11 is combustion settling chamber smoke inlet; 12 is combustion settling chamber exhanst gas outlet.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail, described in be to explanation of the present utility model instead of restriction.
See Fig. 1 ~ Fig. 3, a kind of electrical arc furnace flue gas waste heat utilization device, comprise the combustion settling chamber 3 be connected with the exhanst gas outlet of electrical arc furnace 1, the exhanst gas outlet of combustion settling chamber 3 is connected with the high-temperature flue gas entry of Waste-heat boiler 4, export from the low-temperature flue gas of Waste-heat boiler 4 after heat transfer water in high-temperature flue gas and heat exchanger tube and discharge, the bottom of heat exchanger tube is connected with and stores drum 5; The low-temperature flue gas outlet of Waste-heat boiler 4 is connected with dust removing purifier 6, and dust removing purifier 6 is connected with aiutage 8 through dedusting fan 7.
Described combustion settling chamber 3, by exhaust gases passes 2, is connected with the 4th hole flue 9 on the bell of electrical arc furnace 1; Exhaust gases passes 2 comprises mobile flue and air supply section, and described mobile flue is bend pipe, and air supply section also offers blow valve.
Described combustion settling chamber 3 comprises combustion chamber and expansion chamber, and the fuel gas in the flue gas that electrical arc furnace is discharged burns in a combustion chamber, and bulky grain thing is deposited in expansion chamber; All and combustion chamber, and its opening all upward for the smoke inlet of combustion settling chamber 3 and exhanst gas outlet.
The cold wind mixer selector valve regulating flue gas exit temperature is also provided with before the exhanst gas outlet of described combustion settling chamber 3.
The heat exchanger tube of described Waste-heat boiler 4 comprises multiple heat exchange unit, high-temperature flue gas lead to outside heat exchange unit Waste-heat boiler low-temperature flue gas outlet, each heat exchange unit successively with the flue gas heat exchange passed through.
Described dust removing purifier 6 is sack cleaner, and the entrance of sack cleaner is also provided with the cold wind mixer selector valve regulating flue gas to enter temperature.
Concrete, combustion settling chamber is connected at bell the 4th hole exhanst gas outlet of electrical arc furnace, after Waste-heat boiler, about the 1200 DEG C high-temperature flue gas that electric arc furnaces produces, combustion settling chamber is entered by entering mobile flue, wherein the combustible such as CO burns further, bulky grain is able to sedimentation simultaneously, by adjustment combustion settling chamber outlet mixer selector valve, flue gas exit temperature is controlled within 800 DEG C, enter Waste-heat boiler through high-temperature flue again and carry out heat recovery, flue-gas temperature after heat exchange drops to about 160 DEG C and enters deduster purification, the saturated vapor that heat pipe boiler is produced is accumulated among storage heater, for production and life.
See Fig. 2, mobile flue two ends connect bell the 4th hole 9 and combustion settling chamber respectively, mobile flue does not interfere with the 4th curved flue in hole when will meet bell screw-in or screw out, air supply section meets while suction high-temperature flue gas, also the enough outside airs of people to be inhaled, for the second-time burning of the CO accumulated in the expansion chamber of rear portion.
See Fig. 3, in combustion settling chamber, oarse-grained infall process is subject to the effect of three power altogether, and gravity, buoyancy and flue gas are to the drag force of particle.The difference of gravity and buoyancy is the power making flue dust generation sedimentation, and drag force is then hinder the power of flue dust generation sedimentation.Flue gas enters from combustion settling chamber smoke inlet 11, discharges from combustion settling chamber exhanst gas outlet 12, and for ensureing the effect of settling of big dust particle in flue gas, combustion settling chamber smoke inlet 11, combustion settling chamber exhanst gas outlet 12 are all arranged on top.
The electrical arc furnace flue gas waste heat utilization device that the utility model provides; heat energy utilization and environmental protection are taken into account; and energy-saving effect is obvious; avoid the defect of flue gas to scrap heating; the energy be accumulated in drum can change functional mode as required, has also enriched the means of energy supply.
Claims (6)
1. an electrical arc furnace flue gas waste heat utilization device, it is characterized in that, comprise the combustion settling chamber be connected with the exhanst gas outlet of electrical arc furnace, the exhanst gas outlet of combustion settling chamber is connected with the high-temperature flue gas entry of Waste-heat boiler, export from the low-temperature flue gas of Waste-heat boiler after heat transfer water in high-temperature flue gas and heat exchanger tube and discharge, the bottom of heat exchanger tube is connected with and stores drum; The low-temperature flue gas outlet of Waste-heat boiler is connected with dust removing purifier, and dust removing purifier is connected with aiutage through dedusting fan.
2. electrical arc furnace flue gas waste heat utilization device as claimed in claim 1, is characterized in that, described combustion settling chamber, by exhaust gases passes, is connected with the 4th hole flue on the bell of electrical arc furnace; Exhaust gases passes comprises mobile flue and air supply section, and described mobile flue is bend pipe, and air supply section also offers blow valve.
3. electrical arc furnace flue gas waste heat utilization device as claimed in claim 1, it is characterized in that, described combustion settling chamber comprises combustion chamber and expansion chamber, and the fuel gas in the flue gas that electrical arc furnace is discharged burns in a combustion chamber, and bulky grain thing is deposited in expansion chamber; All and combustion chamber, and its opening all upward for the smoke inlet of combustion settling chamber and exhanst gas outlet.
4. electrical arc furnace flue gas waste heat utilization device as claimed in claim 1, is characterized in that, is also provided with the cold wind mixer selector valve regulating flue gas exit temperature before the exhanst gas outlet of described combustion settling chamber.
5. electrical arc furnace flue gas waste heat utilization device as claimed in claim 1, it is characterized in that, the heat exchanger tube of described Waste-heat boiler comprises multiple heat exchange unit, high-temperature flue gas lead to outside heat exchange unit Waste-heat boiler low-temperature flue gas outlet, each heat exchange unit successively with the flue gas heat exchange passed through.
6. electrical arc furnace flue gas waste heat utilization device as claimed in claim 1, it is characterized in that, described dust removing purifier is sack cleaner, and the entrance of sack cleaner is also provided with the cold wind mixer selector valve regulating flue gas to enter temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420564831.7U CN204085215U (en) | 2014-09-28 | 2014-09-28 | A kind of electrical arc furnace flue gas waste heat utilization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420564831.7U CN204085215U (en) | 2014-09-28 | 2014-09-28 | A kind of electrical arc furnace flue gas waste heat utilization device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204085215U true CN204085215U (en) | 2015-01-07 |
Family
ID=52177918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420564831.7U Expired - Fee Related CN204085215U (en) | 2014-09-28 | 2014-09-28 | A kind of electrical arc furnace flue gas waste heat utilization device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204085215U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180664A (en) * | 2015-07-16 | 2015-12-23 | 中国中元国际工程有限公司 | Waste-heat utilization device of intermittent steelmaking electric-arc furnace and waste-heat utilization method for waste-heat utilization device |
| CN106498135A (en) * | 2016-11-19 | 2017-03-15 | 佛山市原创动力科技有限公司 | A kind of oligosaprobic waste heat recycle device |
| CN106871094A (en) * | 2017-04-06 | 2017-06-20 | 深圳市凯盛科技工程有限公司 | A kind of waste heat boiler of all-oxygen combustion glass furnace |
| CN108168320A (en) * | 2018-01-29 | 2018-06-15 | 大峘集团有限公司 | A kind of symmetrical double furnace chambers scrap steel preheating melting appartus and steel scrap melt method |
| CN110512050A (en) * | 2019-09-23 | 2019-11-29 | 九江华林实业有限公司 | Waste-heat recovery device is used in a kind of refinement of steel ingot |
| CN110686521A (en) * | 2019-11-20 | 2020-01-14 | 中冶南方工程技术有限公司 | Electric furnace flue gas waste heat utilization method and system |
-
2014
- 2014-09-28 CN CN201420564831.7U patent/CN204085215U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180664A (en) * | 2015-07-16 | 2015-12-23 | 中国中元国际工程有限公司 | Waste-heat utilization device of intermittent steelmaking electric-arc furnace and waste-heat utilization method for waste-heat utilization device |
| CN106498135A (en) * | 2016-11-19 | 2017-03-15 | 佛山市原创动力科技有限公司 | A kind of oligosaprobic waste heat recycle device |
| CN106498135B (en) * | 2016-11-19 | 2018-08-31 | 佛山市原创动力科技有限公司 | A kind of waste heat recycle device of low stain |
| CN106871094A (en) * | 2017-04-06 | 2017-06-20 | 深圳市凯盛科技工程有限公司 | A kind of waste heat boiler of all-oxygen combustion glass furnace |
| CN108168320A (en) * | 2018-01-29 | 2018-06-15 | 大峘集团有限公司 | A kind of symmetrical double furnace chambers scrap steel preheating melting appartus and steel scrap melt method |
| CN110512050A (en) * | 2019-09-23 | 2019-11-29 | 九江华林实业有限公司 | Waste-heat recovery device is used in a kind of refinement of steel ingot |
| CN110686521A (en) * | 2019-11-20 | 2020-01-14 | 中冶南方工程技术有限公司 | Electric furnace flue gas waste heat utilization method and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204085215U (en) | A kind of electrical arc furnace flue gas waste heat utilization device | |
| CN201740408U (en) | Electric boiler flue gas waste heat recovery system with settlement heat storage chamber | |
| CN201574162U (en) | Converter flue gas complementary-energy generating system with gas combustion device | |
| CN102424873B (en) | Method and device for solar reduction iron making | |
| CN202660889U (en) | Liquid deslagging high-temperature oriented silicon steel walking beam type slab heating furnace | |
| CN205352106U (en) | Magnesium metal heat accumulation formula smelting furnace waste heat utilization equipment | |
| CN105509492B (en) | A kind of Alumina Rotary Kiln fume afterheat and CO2 recovery systems and method | |
| CN101705331B (en) | Sensible heat recovering system and method of tail gas of converter with afterburning | |
| CN204554840U (en) | A kind of industrial waste gas combustion apparatus | |
| CN204080053U (en) | The pyrolysis liquating furnace of waste enameled wire and production line | |
| CN1991249A (en) | Electric furnace smelting heat recovery and utilization method | |
| CN103468955A (en) | New scrap copper smelting technology | |
| CN205382195U (en) | Low -grade reviver smelting slag fuming furnace processing system | |
| CN209271039U (en) | A kind of flue gas heat recovery device | |
| CN209383835U (en) | A kind of efficient smelting furnace energy conserving system | |
| CN204997066U (en) | Low pressure natural gas zinc powder stove | |
| CN204224630U (en) | A kind of device utilizing partition rotary kiln reduction iron production | |
| CN102191386B (en) | Reaction device of non-ferrous metal recycling | |
| CN202450141U (en) | Non-ferrous metal recovery reacting device | |
| CN217110517U (en) | Energy-saving electric furnace flue gas treatment system | |
| CN202830121U (en) | Waste heat recycling device of silver copper smelting furnace | |
| CN101928024B (en) | Method and device for reducing waste gas emission in carnallite dehydrating process | |
| CN202770196U (en) | Oxygen side blowing bath smelting system for non-ferrous metal smelting | |
| CN206553599U (en) | Reviver saves Shuangzi smelting furnace | |
| CN214300226U (en) | Converter flue gas processing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Steelmaking arc furnace flue gas waste heat utilization device Effective date of registration: 20150617 Granted publication date: 20150107 Pledgee: Xi'an Taixin financing Company limited by guarantee Pledgor: XI'AN GUANGDA ELECTRIC FURNACE CO., LTD. Registration number: 2015980000115 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 Termination date: 20150928 |
|
| EXPY | Termination of patent right or utility model |