CN201837258U - Metallurgical furnace flue gas waste heat recovery device with heat accumulator - Google Patents
Metallurgical furnace flue gas waste heat recovery device with heat accumulator Download PDFInfo
- Publication number
- CN201837258U CN201837258U CN2010205633154U CN201020563315U CN201837258U CN 201837258 U CN201837258 U CN 201837258U CN 2010205633154 U CN2010205633154 U CN 2010205633154U CN 201020563315 U CN201020563315 U CN 201020563315U CN 201837258 U CN201837258 U CN 201837258U
- Authority
- CN
- China
- Prior art keywords
- flue gas
- heat recovery
- heat
- recovery device
- metallurgical furnace
- 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
Images
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
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
Landscapes
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
A metallurgical furnace flue gas waste heat recovery device with a heat accumulator comprises a combustion settling chamber, a high-temperature dust collector, the heat accumulator, a heat pipe type waste heat recovery apparatus, a main fan and an exhaust drum. The metallurgical furnace flue gas waste heat recovery device is characterized in that the combustion settling chamber is sequentially connected with the high-temperature dust catcher, the heat accumulator, the heat pipe type waste heat recovery apparatus, the main fan and the exhaust drum by pipelines. A carbon fiber filter element is arranged in the high temperature dust catcher, the heat accumulator consists of a flue gas inlet, a heat accumulating piece, an ash removing device, a flue gas outlet and an ash hopper, the accumulating piece is disposed between the flue gas inlet and the flue gas outlet, and the ash removing device is disposed between the heat accumulating piece in a sectioned manner. The metallurgical furnace flue gas waste heat recovery device is provided with the heat accumulator, accordingly can cut peak values and fill valley values of the temperature of flue gas, reduces the highest temperature of the flue gas and fluctuation amplitude of the temperature of the flue gas, and improves stability of equipment. Since the waste heat recovery device is placed behind the dust catcher, dust content in the flue gas of a heat source is reduced, equipment volume and maintenance are decreased, and the service lives of the equipment are prolonged.
Description
Technical field
The utility model relates to a kind of waste-heat recovery device, and particularly a kind of metallurgical furnace flue gas waste-heat recovery device that storage heater is arranged belongs to flue gas ash removal and heat recovery technology field.
Background technology
The a large amount of energy of the annual consumption of steel and iron industry, high-temperature flue gas that produces in the smelting process and equipment cooling have been taken away big energy.Because metallurgical furnace (electric furnace, converter, rotary hearth furnace) steel-making flue-gas temperature is very high, generally about 800 ℃, dust concentration reaches 25g/Nm to the temperature that enters pipeline after capturing
3, accounting for more than 70% of dust total amount less than the ash of 10um, Dust Capacity is big, and sticking and thin.And the flue-gas temperature big ups and downs, dustiness is big, and light water tubulation waste heat boiler is difficult to apply to the waste heat recovery of metallurgical furnace flue gas.At present, the heat pipe-type waste heat recovery apparatus has successfully applied in the flue gas waste heat recovery of metallurgical furnace, but, make popularize also the face a lot of problems of heat pipe waste-heat recovery device at steel industry because the inherent shortcoming of heat pipe (cost height, not freeze proof, non-refractory, service life are short).
Owing to contain a large amount of dust in the flue gas, dust stratification, clogging appear in sticking and thin dust on heat exchange element, not only influence heat exchange efficiency, cause waste heat boiler steam production deficiency, even more serious is because the stifled ash of waste heat boiler, system's fluctuation of service causes to smelt to produce and can't normally carry out the maintenance of being forced to stop production.
Simultaneously, because the metallurgical furnace flue gas temperature fluctuation is violent, wave amplitude is big, and waste-heat recovery device just must design enough greatly, guarantees that high-temperature flue gas also can effectively cool off.But actual steam output the situation of low load with strong power occurs far below the evaporation capacity of waste-heat recovery device.The economic worth that this has just reduced waste-heat recovery device has relatively increased the investment of waste-heat recovery device.
Summary of the invention
The utility model is at problems of the prior art, a kind of waste-heat recovery device that can effectively reduce metallurgical furnace flue gas temperature fluctuation amplitude is provided, this device can not only reclaim the heat energy in the flue gas to greatest extent, and do not influence the stable and continuous of metallurgical furnace STEELMAKING PRODUCTION, can also obtain good dust removing effects, the little 15mg/Nm of dust concentration
3
The technical scheme that its technical problem that solves the utility model adopts is: it comprises combustion settling chamber, hot precipitator, storage heater, the heat pipe-type waste heat recovery apparatus, main air blower, aiutage, it is characterized in that: described combustion settling chamber is by the pipeline hot precipitator that is linked in sequence, storage heater, the heat pipe-type waste heat recovery apparatus, main air blower, aiutage, be provided with the carbon fiber filter core in the described hot precipitator, described storage heater comprises gas approach, heat storage, deashing device, exhanst gas outlet and ash bucket, described heat storage is arranged between gas approach and the exhanst gas outlet, described heat storage material is the carbon ceramic composite material, described deashing device segmentation is arranged between the heat storage, and described deashing device is the line pulse deashing.
Because the metallurgical furnace flue gas temperature fluctuation is violent, flue-gas temperature peak value height, after flue gas was handled by storage heater of the present utility model, the flue-gas temperature fluctuating range can greatly reduce, and has also reduced the peak value of flue-gas temperature simultaneously.Flue gas through storage heater advances the heat pipe-type waste heat recovery apparatus, because the flue-gas temperature peak value reduces, the waste-heat recovery device investment is reduced; The flue-gas temperature fluctuating range reduces, and then helps improving the stability of waste-heat recovery device, increases the service life; Simultaneously,, when manufacturing and designing, equipment can not consider because after the utility model heat pipe-type waste heat recovery apparatus was placed on deduster, the thermal source dust content was low, and therefore can the design of heat exchange core cell spacing of fin is very little; And need not unload ash, deashing, defeated grey facility; UTILIZATION OF VESIDUAL HEAT IN facility volume reduces, and maintenance reduces simultaneously, has also prolonged the service life of heat pipe-type waste heat recovery apparatus, and dust emission concentration is lower.
Advantage of the present utility model is:
1. can alleviate the rapid drawdown that rises sharply of flue-gas temperature;
2. solve the problem of expanding with heat and contract with cold;
3. heat pipe-type waste heat recovery apparatus dust stratification does not stop up;
4. prolong the service life of equipment;
5. improve waste heat apparatus efficient;
6. reduce the waste heat apparatus investment;
7. can reduce and sneak into cold blast rate, save the dedusting energy consumption.
Description of drawings
Fig. 1 is an apparatus structure schematic diagram of the present utility model.
Among the figure, 1. metallurgical furnace, 2. water-cooled sliding sleeve, 3. combustion settling chamber, 4. hot precipitator, 5. storage heater, 6. gas approach, 7. heat storage, 8. ash bucket, 9. deashing device, 10. exhanst gas outlet, 11. heat pipe-type waste heat recovery apparatus, 12. main air blowers, 13. aiutages.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
A kind of metallurgical furnace flue gas waste-heat recovery device that has storage heater comprises combustion settling chamber 3 in the utility model, hot precipitator 4, storage heater 5, heat pipe-type waste heat recovery apparatus 11, main air blower 12, aiutage 13, it is characterized in that: described combustion settling chamber 3 is by the pipeline hot precipitator 4 that is linked in sequence, storage heater 5, heat pipe-type waste heat recovery apparatus 11, main air blower 12, aiutage 13, be provided with the carbon fiber filter core in the described hot precipitator 4, described storage heater 5 comprises gas approach 6, heat storage 7, deashing device 9, exhanst gas outlet 10 and ash bucket 8, described heat storage 7 is arranged between gas approach 6 and the exhanst gas outlet 10, described deashing device 9 segmentations are arranged between the heat storage 7, described heat storage 7 materials are the carbon ceramic composite material, and described deashing device 9 is online pulse dust cleaning.
Adopt waste-heat recovery device after the first dedusting, promptly earlier the high temperature dust flue gas being entered the carbon fiber filter-element dust collector purifies, carbon fiber filter core in the deduster, generally can bear the long-term work temperature about 1000 ℃, high energy bears 1100 ℃ high temperature, and can bear that high temperature is oarse-grained to be washed away, therefore can the direct purification high-temperature flue gas, and do not need to do any preliminary treatment.Dust concentration after the purification is reduced to less than 15mg/Nm3 and is become clean flue gas, and waste-heat recovery device does not need to handle problems such as the obstruction, deashing of dust.
The course of work of the present utility model: 100t/h metallurgical furnace 1 flue gas flow 22 * 104Nm3/h, 1000 ℃ of temperature, dust content 30g/Nm3 is discharged by the 4th hole, sneaks into cold wind through water-cooled sliding sleeve 2, enters combustion settling chamber 3 behind the burning CO gas; The effect of combustion settling chamber 3 is: reduce flue gas flow rate, make the big dust particle sedimentation of carrying in the flue gas, and suitably sneak into cold wind, finally burn CO gas, the flue gas that is come out by combustion settling chamber 3 enters hot precipitator 4, and dust concentration is less than 15mg/Nm3 after dedusting.After the heat storage 7 of high-temperature flue gas and storage heater 5 carries out heat exchange then, enter in the heat pipe-type waste heat recovery apparatus 11, temperature is reduced to about 100 ℃, is pressed into aiutage 13 by main air blower 12 and enters atmosphere.
Because storage heater 5 can be to the flue-gas temperature peak load shifting, reduce flue gas maximum temperature, reduce the fluctuating range of flue-gas temperature, alleviate the rapid drawdown that rises sharply of flue-gas temperature, thereby can reduce the investment of waste heat apparatus, improve the stability of waste heat apparatus, and can dispose all kinds of waste heat recovery apparatus safely.
Be example with certain 100t of steel plant metallurgical furnace waste-heat recovery device below, the beneficial effects of the utility model are described: the field measurement 100t of these steel plant metallurgical furnace flue gas temperature reaches as high as about 1000 ℃, minimumly reaches about 50 ℃.The utility model is by installing storage heater in the flue gas system before waste heat equipment, and metallurgical furnace flue gas is through behind the samming, and flue-gas temperature maintains 200 ℃～600 ℃ interval fluctuation.
Claims (5)
1. metallurgical furnace flue gas waste-heat recovery device that has storage heater, comprise combustion settling chamber, hot precipitator, storage heater, heat pipe-type waste heat recovery apparatus, main air blower, aiutage, it is characterized in that: described combustion settling chamber is by pipeline be linked in sequence hot precipitator, storage heater, heat pipe-type waste heat recovery apparatus, main air blower, aiutage.
2. a kind of metallurgical furnace flue gas waste-heat recovery device that has storage heater according to claim 1 is characterized in that: be provided with the carbon fiber filter core in the described hot precipitator.
3. a kind of metallurgical furnace flue gas waste-heat recovery device that has storage heater according to claim 1, it is characterized in that: described storage heater comprises gas approach, heat storage, deashing device, exhanst gas outlet and ash bucket, wherein, described heat storage is arranged between gas approach and the exhanst gas outlet, and described deashing device segmentation is arranged between the heat storage.
4. a kind of metallurgical furnace flue gas waste-heat recovery device that has storage heater according to claim 3, it is characterized in that: described heat storage material is the carbon ceramic composite material.
5. a kind of metallurgical furnace flue gas waste-heat recovery device that has storage heater according to claim 3, it is characterized in that: described deashing device is the line pulse deashing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205633154U CN201837258U (en) | 2010-10-12 | 2010-10-12 | Metallurgical furnace flue gas waste heat recovery device with heat accumulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205633154U CN201837258U (en) | 2010-10-12 | 2010-10-12 | Metallurgical furnace flue gas waste heat recovery device with heat accumulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201837258U true CN201837258U (en) | 2011-05-18 |
Family
ID=44007369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205633154U Expired - Fee Related CN201837258U (en) | 2010-10-12 | 2010-10-12 | Metallurgical furnace flue gas waste heat recovery device with heat accumulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201837258U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061793A (en) * | 2014-04-30 | 2014-09-24 | 上海宝钢节能环保技术有限公司 | Step-by-step waste heat recovery system and method for electric furnace flue gas on whole temperature section |
| CN111059950A (en) * | 2019-12-26 | 2020-04-24 | 思安新能源股份有限公司 | Horizontal heat storage bin |
-
2010
- 2010-10-12 CN CN2010205633154U patent/CN201837258U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061793A (en) * | 2014-04-30 | 2014-09-24 | 上海宝钢节能环保技术有限公司 | Step-by-step waste heat recovery system and method for electric furnace flue gas on whole temperature section |
| CN104061793B (en) * | 2014-04-30 | 2016-06-15 | 上海宝钢节能环保技术有限公司 | A kind of electric furnace flue gas temperature section waste heat recovery system step by step and method entirely |
| CN111059950A (en) * | 2019-12-26 | 2020-04-24 | 思安新能源股份有限公司 | Horizontal heat storage bin |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102243025A (en) | Process and device for recycling flue gas afterheat of electric furnace | |
| CN101671757A (en) | Converter coal gas dry-method bag-type dust collecting and waste heat recovery method | |
| CN201837258U (en) | Metallurgical furnace flue gas waste heat recovery device with heat accumulator | |
| CN203683571U (en) | Dry dedusting and energy-saving system | |
| CN201266021Y (en) | Roller kiln quench zone exhaust heat utilization apparatus | |
| CN202470793U (en) | Equipment special for using waste heat of high dust content flue gas of submerged arc furnace in cascade mode and removing dust | |
| CN201653168U (en) | Heat pipe type waste heat recovery special apparatus for high temperature high dust laden smoke in metallurgy furnace | |
| CN201697478U (en) | Electric furnace thermal storage temperature equilibrium settling chamber | |
| CN201844699U (en) | Electric furnace smoke waste heat power generation device with heat accumulation temperature equalization device | |
| CN101995166A (en) | Metallurgical furnace dedusting waste heat recovery machine and method | |
| CN103383195A (en) | Waste heat utilization and dust removing method for electric furnace flue gas with thermal storage soaking device | |
| CN201837261U (en) | Special device for power generation by using high-temperature high-dust-content flue gas waste heat in metallurgical furnace | |
| CN204007180U (en) | A kind of waste gas residual heat recycling and processing device | |
| CN202145097U (en) | Flue gas heat accumulating type waste heat power generation special equipment for metallurgical furnace | |
| CN202470794U (en) | Equipment special for waste heat cascade utilization and dust removal of high-temperature alternation fume of electric furnace | |
| CN203116545U (en) | High-temperature flue gas waste heat power generation special-purpose device for cupola furnace | |
| CN104729307A (en) | Heat exchange set for flue gas waste heat recovery | |
| CN103105071A (en) | Method for submerged arc furnace flue gas multistage organic Rankine cycle waste heat power generation | |
| CN202145098U (en) | Special equipment for high-temperature alternating flue gas organic Rankine waste heat power generation and dust removal of electric furnace | |
| CN203116541U (en) | High dust-content flue gas waste heat power generation device for submerged arc furnace | |
| CN220097310U (en) | Ash bucket heating system taking waste heat of boiler flue gas as heat source | |
| CN202915738U (en) | Special equipment for cogeneration, energy saving and dust removing of flue gas of semi-closed electric furnace | |
| CN202747822U (en) | Special device for high-temperature alternating smoke gas residual heat power generation, energy conservation and dust removal of metallurgical furnace | |
| CN201662332U (en) | In-furnace smoke-removing and heat-recovering system with thermal storage and temperature equilibrium equipment | |
| CN201600038U (en) | Electric furnace or converter internally-exhausted smoke thermal storage temperature equalizer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110518 Termination date: 20141012 |
|
| EXPY | Termination of patent right or utility model |