CN111854451A - Deep recovery method of primary flue gas heat energy of electric furnace - Google Patents
Deep recovery method of primary flue gas heat energy of electric furnace Download PDFInfo
- Publication number
- CN111854451A CN111854451A CN201910338207.2A CN201910338207A CN111854451A CN 111854451 A CN111854451 A CN 111854451A CN 201910338207 A CN201910338207 A CN 201910338207A CN 111854451 A CN111854451 A CN 111854451A
- Authority
- CN
- China
- Prior art keywords
- flue gas
- electric furnace
- heat energy
- primary
- heat
- 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.)
- Pending
Links
Images
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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The deep recovery method of the heat energy of the primary flue gas of the electric furnace belongs to the energy-saving and emission-reducing technology of the electric furnace, and is characterized in that the mixed air cooling mode in the prior art is cancelled, two sections of water cooling pipelines and cooling facilities behind the flue gas combustion and settling chamber in the prior art are changed into heat preservation flues, the modern plate heat exchanger is adopted to recover the heat energy of the primary flue gas of the electric furnace behind the flue gas combustion and settling chamber, the temperature of the flue gas after the flue gas combustion and settling chamber is reduced to about 50 ℃, hot water resources with the temperature of about 90 ℃ are obtained at the same time, the hot water resources enter a public hot water pipe network and a storage system to be supplied to hot water users, the cooled flue gas is sent into a fine dust removal cloth bag dust remover, the heat energy at the temperature of about 850 ℃ is recovered by the technical scheme of the heat energy deep recovery of the heat energy of, the method can be widely applied to a newly-built, expanded or modified electric furnace primary flue gas purification system.
Description
Technical Field
The invention belongs to an energy-saving and emission-reducing technology for electric furnace steelmaking.
The invention does not relate to the manufacturing technology of various plate heat exchangers, the manufacturing technology of various dust collectors, the utilization technology of heat energy and specific technical solutions thereof.
Background
The method comprises the following steps that flue gas generated in the smelting process of the electric furnace is processed in two paths, namely an inner smoke exhaust (primary flue gas) system is led out from a second hole or a fourth hole of the electric furnace, and the temperature of the flue gas is about 1200-1400 ℃; and the second is an external smoke exhaust (secondary smoke) system, wherein smoke overflowing from the electric furnace in the smelting process of the electric furnace is collected by a closed dust hood, and the temperature of the smoke is about 120-150 ℃. For an internal smoke exhaust system, a typical smoke dust removal and cooling mode is that smoke at 1200-1400 ℃ is cooled to about 200 ℃ and settled for coarse dust removal through air mixing at a smoke outlet of an electric furnace, a first section of water cooling pipeline, a smoke combustion and settling chamber, a second section of water cooling pipeline and a cooling facility, and then air mixing is carried out before the smoke enters a fine dust removal bag-type dust remover, so that the temperature is reduced to about 125 ℃, and the heat energy of the smoke at about 1150-1350 ℃ is lost; some electric furnace systems are also provided with a flue gas heat energy recovery system, the flue gas at 1200-1400 ℃ is cooled to about 250-600 ℃ by adopting a vaporization cooling flue (boiler), and the flue gas at about 400-600 ℃ is cooled to below 125 ℃ by a mechanical air cooling heat exchanger and is sent to a bag-type dust collector; for the flue gas at about 250-400 ℃, the temperature of the flue gas is reduced to below 125 ℃ after the flue gas is mixed by a rear flue gas pipeline, and the flue gas is sent into a bag-type dust collector; when the vaporization cooling is carried out, the steam generated in the cooling process is collected and sent into a public steam pipe network to be supplied to steam users in the steel plant for use; the heat energy of the flue gas with the temperature of 1200-1400 ℃ is recovered in the vaporization cooling and temperature reduction process, about 600-1150 ℃ heat energy is recovered, most of heat energy of the primary flue gas of the electric furnace is recovered, but the heat energy of the flue gas with the temperature of about 200-550 ℃ is lost, but the method for recovering the steam has the problems of complex system, high equipment cost, low heat exchange efficiency of a vaporization cooling flue (boiler) and the like, and the actual recovery benefit is not ideal; in addition, the prior art also has the problems of overlarge energy consumption of a dust removal fan, overlarge capacity of a dust remover, overhigh investment and the like caused by air mixing reasons. For the external smoke discharging system, the temperature of the smoke is lower than 150 ℃, the mixed air is carried out through the smoke pipeline, and the temperature of the smoke reaching the inlet of the bag-type dust remover is lower than 125 ℃ so as to meet the requirement of the bag-type dust remover.
In recent years, the domestic air pollution condition is serious, the haze weather is frequent, and the country is accelerating to implement environmental protection measures, on one hand, the emission of pollutants is controlled, and on the other hand, the energy-saving emission reduction measures are taken to reduce the carbon emission. If an efficient deep recovery technology (process) for primary flue gas heat energy of an electric furnace can be developed, the implementation and development of national energy conservation and emission reduction and macroscopic decision of circular economy can be well promoted.
The plate heat exchanger has the advantages of easy manufacture, safety, reliability, high heat exchange efficiency, light weight, low price, simple maintenance, convenient use and the like. With the development of heat exchange technology, the emergence of modern high-capacity and high-temperature-resistant heat exchangers makes efficient and cheap heat energy recovery possible, which cannot be luxurious originally, and provides a practical technical platform for heat energy recovery. Unfortunately, no published literature or publications on the deep recovery of primary flue gas heat energy of electric furnaces, i.e. the application of plate heat exchanger heat energy recovery in this field, have been found so far.
In conclusion, the prior art has the problems of large heat energy loss, low recovery efficiency and the like, so that the energy-saving and emission-reducing potential in the field of primary flue gas heat energy recovery of electric furnaces is very great, and the research and development of innovative energy-saving and emission-reducing technology are urgently needed.
No publications, documents or materials disclosing published methods for the deep recovery of the heat energy of the primary flue gas of an electric furnace have been found so far.
Disclosure of Invention
According to the characteristics of the primary flue gas of the electric furnace, the invention researches and develops a gas/water heat exchange method of the heat energy of the primary flue gas of the electric furnace, deeply recovers the heat energy of the primary flue gas of the electric furnace, aims to overcome the problem of heat energy loss in the prior art, recovers the heat energy of the primary flue gas of the electric furnace to the maximum extent, and obtains the best energy-saving and emission-reducing effects.
The key points of the invention are that the new concepts of energy saving and emission reduction, green circular economy, industrial and urban co-integration and sustainable development are applied, the deep recovery of the primary flue gas heat energy of the electric furnace is started, the air mixing cooling mode of the prior art is cancelled, the two-section water cooling pipeline and cooling facility behind the flue gas combustion and settling chamber of the prior art are changed into a heat preservation flue, the primary flue gas heat energy of the electric furnace behind the flue gas combustion and settling chamber is recovered by adopting a modern plate heat exchanger, the primary flue gas of the electric furnace with the temperature of about 900 ℃ behind the flue gas combustion and settling chamber is reduced to about 50 ℃, hot water resources with the temperature of about 90 ℃ are obtained at the same time, the hot water resources enter a public hot water pipe network and a storage system and are supplied to hot water users for use, the cooled flue gas is sent to a fine dust removal bag dust remover, the heat energy at the temperature of about 850 ℃ is recovered, the double benefits of deep recovery of primary flue gas heat energy of the electric furnace and substantial energy saving of the dust removal fan are obtained.
Drawings
The attached figure 1 is a process flow diagram of a deep recovery method of primary flue gas heat energy of an electric furnace, wherein 1 is the electric furnace, 2 is a flue hood of the electric furnace, 3 is a vaporization cooling flue, 4 is a flue gas combustion and settling chamber, 5 is a heat preservation flue, 6 is a heat exchanger, 7 is a fine dust remover, 8 is a fan inlet valve, 9 is a primary dust removal fan of the electric furnace, and 10 is a flue gas discharge chimney.
Detailed Description
In the prior art, some systems for recovering heat energy of primary flue gas generated in the smelting process of an electric furnace are partially recovered, and other systems are not recovered at all. In the heat energy recovery system, a vaporization cooling flue (boiler) is adopted to cool the flue gas with the temperature of 1200-1400 ℃ to 250-600 ℃, the heat energy of the flue gas with the temperature of 600-1150 ℃ is recovered, and the residual 21-43% of the heat energy of the flue gas is lost; in addition, the heat energy recovery efficiency of the vaporization cooling flue (boiler) is low, and part of heat energy is lost in the heat exchange process. From the whole situation at present, the electric furnace primary flue gas has great heat energy recovery potential, and good social benefit and economic benefit can be generated if the electric furnace primary flue gas can be recycled.
The other serious problem in the prior art is that a large amount of mixed air causes great increase of the capacity of a dust removal fan and the scale of a bag-type dust remover, so that energy consumption, equipment price and engineering occupation are greatly increased, and the dew point of flue gas is increased, so that the space for recovering heat energy is lost, and the dust removal difficulty of the bag-type dust remover is increased.
For a long time, in the aspect of recycling the primary flue gas heat energy of the electric furnace, because systematic and deep research is not carried out, particularly, a new concept of energy conservation and emission reduction, green circular economy, industrial and urban co-fusion and sustainable development is not applied to think of the huge value of the heat energy recycling, the research on the aspect is basically in a stagnation state. The deficiency of the heat energy recovery technology and the deficiency of the heat energy utilization technology jointly form the technical bottleneck of the primary flue gas heat energy recovery and utilization of the electric furnace. To break through this technical bottleneck, innovative thinking is needed. The heat energy recovery and utilization are mutually restricted and mutually promoted, and if the heat energy recovery and utilization have no utilization value, the power of the heat energy recovery is not researched; the research on heat energy recovery has great driving force when the heat energy recovery has a utilization value, particularly a utilization value with a wide application prospect.
For recycling the primary flue gas heat energy of the electric furnace, the simplest and effective method is to convert the flue gas heat energy into hot water energy for recycling, and the equipment required for converting the flue gas heat energy into the hot water energy is simpler and safer than the steam recycling, the equipment is easier to manufacture, and the heat energy conversion efficiency is higher; the hot water energy source has wider utilization range, can be used for industry, civil, municipal facilities, agriculture and the like, can be used for civil winter heating, low-temperature season heating, bathing and the like to improve the living quality of people, can also be used for municipal facilities such as hospitals, hotels and the like, can be used for agricultural greenhouses and the like, and can form good social environment with energy conservation and emission reduction, green recycling economy, city and industry integration and sustainable development.
In order to recover the heat energy of the primary flue gas of the electric furnace to the maximum extent, the air mixing cooling mode adopted in the prior art is cancelled, the total flue gas amount is reduced, and a larger space is created for heat energy recovery. The mixed air cooling mode has the advantages that a large amount of moisture-containing gas enters, so that the air volume load of the dust removal fan and the bag-type dust remover is increased, the dew point temperature of smoke is increased, and the dust removal difficulty of the bag-type dust remover is increased. The flue gas after combustion in the flue gas combustion and settling chamber is dry, and the flue gas dew point temperature is low under the condition of cooling without mixing air, so that the dust removal of the bag-type dust remover is facilitated, the energy conservation of a dust removal fan is facilitated, and a larger temperature space is created for heat energy recovery.
A two-section water cooling pipeline, a cooling facility or a two-section vaporization cooling flue (boiler) behind a flue gas combustion and settling chamber (4) in the prior art is changed into a heat preservation flue (5), a heat exchanger (6) is adopted to recover the heat energy of the primary flue gas of the electric furnace behind the flue gas combustion and settling chamber (4), the temperature of the primary flue gas of the electric furnace behind the flue gas combustion and settling chamber (4) is reduced to about 50 ℃, hot water resources with the temperature of about 90 ℃ are obtained at the same time, the hot water resources enter a public hot water pipe network and a storage system to be supplied to hot water users, and the cooled flue gas is sent into a fine dust collector (7). In order to ensure that the dioxin in the primary flue gas of the electric furnace is removed, the temperature of the flue gas combustion and settling chamber (4) outlet is not lower than 900 ℃, so that the requirement of environmental protection emission can be met.
The process flow of the method for deeply recovering the primary flue gas heat energy of the electric furnace shown in the attached drawing is researched and developed by applying new concepts of energy conservation and emission reduction, green circular economy, industrial and urban co-integration and sustainable development, and the electric furnace (1) is process equipment; the electric furnace smoke hood (2) is mechanical equipment for collecting primary smoke of electric furnace smelting; the vaporization cooling flue (3) is equipment configured in the prior art and is a first-stage heat exchanger for primary flue gas of the electric furnace, and is used for cooling the flue gas with the temperature of 1200-1400 ℃ generated in the smelting process of the electric furnace to 250-900 ℃ in a flue gas/steam heat exchange mode of the vaporization cooling flue (boiler); the flue gas combustion and settling chamber (4) is equipment which is configured according to the standard in the prior art and has the functions of eliminating harmful gases such as CO, dioxin and the like in flue gas and settling large-particle smoke dust through combustion; the heat preservation flue (5) is a flue gas pipeline behind the combustion chamber, and the section of pipeline is subjected to heat preservation by adopting a heat preservation method so as to prevent heat from being dissipated; the heat exchanger (6) is a second-stage heat exchanger of primary flue gas of the electric furnace, is a modern high-temperature resistant plate heat exchanger and is designed to be explosion-proof, and has the function of reducing the temperature of the flue gas at the outlet of the heat exchanger to about 50 ℃ in a gas/water heat exchange mode, and simultaneously recovering hot water resources of heat exchange, sending the hot water resources into a public hot water pipe network and a storage system, and supplying the hot water resources to hot water users for use; the fine dust collector (7) is a bag-type dust collector and is used for fine dust collection of primary flue gas of the electric furnace, and the dust collection efficiency is larger than or equal to 99.9%; the fan inlet valve (8) is an electric, hydraulic or pneumatic regulating valve and is used for regulating the flue gas flow and pressure of a pipe network according to the change of the smelting working condition of the electric furnace; the primary dust removal fan (9) of the electric furnace is an axial flow fan or a centrifugal fan and operates in a variable speed mode; the flue gas emission chimney (10) is a process facility and is used for discharging the flue gas subjected to dust removal to the air.
The heat energy recovery equipment cools the flue gas with the temperature of 250-900 ℃ to about 50 ℃ through a modern plate heat exchanger, and simultaneously converts the heat energy of the flue gas cooling into hot water with the temperature of 90 ℃, and the hot water can be used for industrial, civil or agricultural purposes. The energy saving of the heat exchange process is considerable, taking 100t electric furnace as an example, according to the smoke gas amount of 180000m3The smelting period is 60min, wherein the blowing time is about 45min, the inlet temperature of cooling water of a heat exchanger is 20 ℃, the outlet temperature is 90 ℃, the annual operating rate of an electric furnace is 320 days, the electricity charge is 0.5 yuan/kWh, and the calculated annual heat energy recovery benefit is as follows: the standard coal is saved by 16913.35-35679.29 tons, the reduced carbon emission in reduced years is 11501.08-24261.92 tons, the electricity saving in reduced years is 42283365-89198219 kWh, and the electricity saving cost in reduced years is 2114.17-4459.91 ten thousand yuan. If two hundred and more electric furnaces exist in China, billions of yuan of benefits can be generated every year if a deep recovery technology of primary flue gas heat energy of the electric furnaces is adopted, and millions of tons of carbon emission can be reduced every year.
The method has the advantages that the air mixing cooling mode adopted in the prior art is omitted, the total smoke volume is reduced, the capacity of the dust removal fan is greatly reduced, the 100t electric furnace is taken as an example, the total smoke volume is increased by 40-80% through the air mixing cooling mode adopted in the prior art, the capacity of the dust removal fan is about 2700kW, after air mixing cooling is omitted, the energy of the dust removal fan is saved by over 50%, the annual energy saving of the dust removal fan is 12441600kWh according to the annual operation condition, and the annual energy saving cost is 622.08 ten thousand yuan.
Compared with the prior art, the deep recovery method of the primary flue gas heat energy of the electric furnace recovers the primary flue gas heat energy of the electric furnace to the maximum extent, obtains excellent energy-saving effect of the dust removal fan and economic benefit of greatly reducing equipment cost and maintenance cost, has prominent substantive characteristics and remarkable progress, and is characterized in that:
(a) the novel concepts of energy conservation and emission reduction, green circular economy, industrial and urban co-integration and sustainable development are firstly applied to think of the huge value of heat energy recycling, the two-section water-cooling pipeline, cooling facility or two-section vaporization cooling flue (boiler) behind the flue gas combustion and settling chamber (4) in the prior art is changed into a heat preservation flue (5), and then the deep recycling of the primary flue gas heat energy of the electric furnace is carried out by adopting a modern plate heat exchanger gas/water heat exchange mode, so that a new way is opened up for the recycling of the flue gas heat energy;
(b) the method for eliminating the primary flue gas mixing and cooling of the electric furnace in the prior art is proposed for the first time, and the remarkable energy-saving effect of the dust removal fan can be obtained;
(c) the deep recovery of the primary flue gas heat energy of the electric furnace is realized, the flue gas heat energy of 200-850 ℃ is recovered compared with the prior art, and the heat energy of the primary flue gas of the electric furnace is recovered to the maximum extent basically;
(d) The process flow is simple, and the heat energy recovery equipment and the flue gas purification equipment are simple and easy to manufacture;
(e) the equipment has low operation cost and convenient maintenance;
(f) the investment of engineering projects is low, and the occupied area is small;
(g) the method is very suitable for carrying out energy-saving emission-reduction transformation on the existing electric furnace primary flue gas system, is easy to implement, and has good social benefit and economic benefit;
(h) the air mixing cooling mode in the prior art is cancelled, and the comprehensive index of heat energy recovery and dust removal fan electricity saving is good;
(i) as the mixed air cooling is cancelled, the dew point of the flue gas is reduced, more heat energy recovery is obtained, the use environment of the bag-type dust collector is improved, and better technical and economic benefits are obtained.
The method for deeply recovering the heat energy of the primary flue gas of the electric furnace can be widely applied to newly built, expanded or modified primary flue gas systems of the electric furnace, is not limited to the primary flue gas heat energy recovery system of the electric furnace, and is also suitable for the flue gas heat energy recovery systems of other furnaces and kilns. Therefore, although the present invention has been described in detail with reference to the foregoing examples, it will be apparent to those skilled in the art that changes may be made in the above embodiments or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The deep recovery method of the heat energy of the primary flue gas of the electric furnace is characterized in that a new concept of energy conservation and emission reduction, green circular economy, industrial and urban co-integration and sustainable development is applied, the deep recovery of the heat energy of the primary flue gas of the electric furnace starts from the deep recovery of the heat energy of the primary flue gas of the electric furnace, the air mixing cooling mode in the prior art is cancelled, a two-section water cooling pipeline and a cooling facility behind a flue gas combustion and settling chamber in the prior art are changed into a heat preservation flue, the heat energy of the primary flue gas of the electric furnace behind the flue gas combustion and settling chamber is recovered by adopting a modern plate heat exchanger, the temperature of the primary flue gas of the electric furnace behind the flue gas combustion and settling chamber is reduced to about 50 ℃, hot water resources with the temperature of about 90 ℃ are obtained at the same time, the hot water resources enter a public hot water pipe network and a storage system and are, the energy saving of the dust removal fan is more than 30 percent than that of the prior art, and double benefits of deep recovery of primary flue gas heat energy of the electric furnace and great energy saving of the dust removal fan are obtained.
2. The deep recovery method of the heat energy of the primary flue gas of the electric furnace according to claim 1, wherein the basic characteristics of the process flow diagram are as follows: the electric furnace (1) is a process device; the electric furnace smoke hood (2) is mechanical equipment for collecting primary smoke of electric furnace smelting; the vaporization cooling flue (3) is equipment configured in the prior art and is a first-stage heat exchanger for primary flue gas of the electric furnace, and is used for cooling the flue gas with the temperature of 1200-1400 ℃ generated in the smelting process of the electric furnace to 250-900 ℃ in a flue gas/steam heat exchange mode of the vaporization cooling flue (boiler); the flue gas combustion and settling chamber (4) is equipment which is configured according to the standard in the prior art and has the functions of eliminating harmful gases such as CO, dioxin and the like in flue gas and settling large-particle smoke dust through combustion; the heat preservation flue (5) is a flue gas pipeline behind the combustion chamber, and the section of pipeline is subjected to heat preservation by adopting a heat preservation method so as to prevent heat from being dissipated; the heat exchanger (6) is a second-stage heat exchanger of primary flue gas of the electric furnace, is a modern high-temperature resistant plate heat exchanger and is designed to be explosion-proof, and has the function of reducing the temperature of the flue gas at the outlet of the heat exchanger to about 50 ℃ in a gas/water heat exchange mode, and simultaneously recovering hot water resources of heat exchange, sending the hot water resources into a public hot water pipe network and a storage system, and supplying the hot water resources to hot water users for use; the fine dust collector (7) is a bag-type dust collector and is used for fine dust collection of primary flue gas of the electric furnace, and the dust collection efficiency is larger than or equal to 99.9%; the fan inlet valve (8) is an electric, hydraulic or pneumatic regulating valve and is used for regulating the flue gas flow and pressure of a pipe network according to the change of the smelting working condition of the electric furnace; the primary dust removal fan (9) of the electric furnace is an axial flow fan or a centrifugal fan and operates in a variable speed mode; the flue gas emission chimney (10) is a process facility and is used for discharging the flue gas subjected to dust removal to the air.
3. The process flow diagram of the deep recovery method of the primary flue gas heat energy of the electric furnace according to claim 2, wherein the heat exchanger (6) is not limited to the use of modern high-temperature resistant flue gas plate heat exchanger, but also includes the use of other various types of high-temperature and low-temperature heat exchangers.
4. The process flow chart of the deep recovery method of the primary flue gas heat energy of the electric furnace according to claim 2, wherein the heat energy recovery process is not limited to the process of adopting a two-stage heat exchanger, and also comprises the process of adopting a one-stage heat exchanger and a multi-stage heat exchanger.
5. The process flow chart of the deep recovery method of the primary flue gas heat energy of the electric furnace according to claim 2, wherein the fine dust collector (7) is not limited to a bag-type dust collector, and other types of dust collectors can be adopted.
6. The method for deeply recovering the heat energy of the primary flue gas of the electric furnace as claimed in claim 1, wherein the method can be widely applied to newly built, expanded or modified primary flue gas purification systems of the electric furnace, and the method is not limited to the primary flue gas purification systems of the electric furnace, and is also suitable for flue gas purification systems of furnaces and kilns in other fields.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910338207.2A CN111854451A (en) | 2019-04-25 | 2019-04-25 | Deep recovery method of primary flue gas heat energy of electric furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910338207.2A CN111854451A (en) | 2019-04-25 | 2019-04-25 | Deep recovery method of primary flue gas heat energy of electric furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111854451A true CN111854451A (en) | 2020-10-30 |
Family
ID=72951241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910338207.2A Pending CN111854451A (en) | 2019-04-25 | 2019-04-25 | Deep recovery method of primary flue gas heat energy of electric furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111854451A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101539371A (en) * | 2009-04-23 | 2009-09-23 | 上海宝钢工程技术有限公司 | First flue gas dust removal and waste heat recovery system for electric stove |
| CN109654895A (en) * | 2018-12-10 | 2019-04-19 | 南京凯盛开能环保能源有限公司 | A kind of device and recovery method of high efficiente callback electric furnace flue gas waste heat |
-
2019
- 2019-04-25 CN CN201910338207.2A patent/CN111854451A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101539371A (en) * | 2009-04-23 | 2009-09-23 | 上海宝钢工程技术有限公司 | First flue gas dust removal and waste heat recovery system for electric stove |
| CN109654895A (en) * | 2018-12-10 | 2019-04-19 | 南京凯盛开能环保能源有限公司 | A kind of device and recovery method of high efficiente callback electric furnace flue gas waste heat |
Non-Patent Citations (1)
| Title |
|---|
| 刘友英等: "《过程设备设计》", 西安电子科技大学出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101858231B (en) | Energy supply system mainly through gas and steam combined cycle cogeneration | |
| CN202096885U (en) | Multistage backheating type low-concentration gas heat reflux catalytic oxidation device | |
| CN112985093A (en) | Efficient power generation technology for eliminating unorganized emission of flue gas of sintering circular cooler | |
| CN210154350U (en) | Deep recovery system for primary flue gas heat energy of electric furnace | |
| CN102322692A (en) | Tail gas heat utilization method for low-concentration gas heat countercurrent catalytic oxidation apparatus | |
| CN103961955A (en) | Preheating process of dust remover for filtering combustible dusty gas | |
| CN110145945B (en) | Blast furnace slag flushing steam whitening system and method based on waste heat heating | |
| CN101457159B (en) | Gas purification and cooling process of two stage type gas generating furnace | |
| CN111854451A (en) | Deep recovery method of primary flue gas heat energy of electric furnace | |
| CN210367571U (en) | Deep recovery system for heat energy of coke oven crude gas | |
| CN210048797U (en) | Converter dry-method primary dust removal system based on deep heat energy recovery | |
| CN103333987B (en) | Converter gas dry method bag-type recovering and purifying process system | |
| CN210048798U (en) | Converter semidry method primary dust removal system based on deep heat energy recovery | |
| CN210219837U (en) | Deep recovery system for heat energy of molten iron pretreatment flue gas | |
| CN212142011U (en) | Integrated system device for dedusting and whitening industrial kiln gas | |
| CN101995165A (en) | Electric furnace waste heat recycling and dedusting device | |
| CN210030768U (en) | Full-dry method converter primary flue gas purification system based on deep heat energy recovery | |
| CN108613507B (en) | Sludge treatment device with combined drying and incineration coupling | |
| CN111850223A (en) | Converter dry-method primary dust removal method based on deep heat energy recovery | |
| CN111850224A (en) | Converter semi-dry method primary dust removal method based on deep heat energy recovery | |
| CN114046506A (en) | Waste incineration waste heat utilization device and method for recycling heat of flue gas furnace slag | |
| CN111850221A (en) | Deep recovery method of hot energy of molten iron pretreatment flue gas | |
| CN203550635U (en) | Heat collector | |
| CN102776326B (en) | Dust removal and two-medium waste heat generation system for argon oxygen decarburization converter | |
| CN201837261U (en) | Special device for power generation by using high-temperature high-dust-content flue gas waste heat in metallurgical furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |