CN202157087U - High-efficiency electric furnace steel making system - Google Patents

High-efficiency electric furnace steel making system Download PDF

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Publication number
CN202157087U
CN202157087U CN2011202531242U CN201120253124U CN202157087U CN 202157087 U CN202157087 U CN 202157087U CN 2011202531242 U CN2011202531242 U CN 2011202531242U CN 201120253124 U CN201120253124 U CN 201120253124U CN 202157087 U CN202157087 U CN 202157087U
Authority
CN
China
Prior art keywords
electric furnace
steel making
auxiliary material
furnace steel
heat exchanging
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
Application number
CN2011202531242U
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Chinese (zh)
Inventor
何义远
邹伟民
卢健儿
林程斌
黄建贇
孙晓东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yongxing special material technology Co., Ltd
Original Assignee
YONGXING SPECIAL STAINLESS STEEL CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by YONGXING SPECIAL STAINLESS STEEL CO Ltd filed Critical YONGXING SPECIAL STAINLESS STEEL CO Ltd
Priority to CN2011202531242U priority Critical patent/CN202157087U/en
Application granted granted Critical
Publication of CN202157087U publication Critical patent/CN202157087U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling

Abstract

The utility model relates to steel making equipment, in particular to a high-efficiency electric furnace steel making system. The high-efficiency electric furnace steel making system comprises an electric furnace, a setting chamber and an auxiliary material cabin, wherein the electric furnace is provided with a smoke outlet, the setting chamber is communicated with the smoke outlet of the electric furnace, a heat exchange pipeline is fixedly arranged at the bottom of the settling chamber through a support, natural air is input into the heat exchange pipeline through an air blower, hot air output from the heat exchange pipeline is introduced into the auxiliary material cabin for heating and drying an auxiliary material, and the auxiliary material is used in the electric furnace for steel making. With the adoption of the high-efficiency electric furnace steel making system, heat energy is recycled, the system is simple and compact in structure and is free from the influence of smoke temperature fluctuation, and the production cost of enterprises is reduced to the greatest extent; therefore, the high-efficiency electric furnace steel making system is worthy of being promoted in steel making industry.

Description

A kind of efficient Electric furnace steel making system
Technical field
The utility model relates to steelmaking equipment, is specifically related to a kind of efficient Electric furnace steel making system.
Background technology
Electric furnace steel making is quite general in China at present.Electric furnace can produce the great amount of high-temperature flue gas in process of production, as the direct discharging of this part flue gas being caused to the pollution of surrounding environment with to the waste of heat.At present, the most electric stove dust system of domestic operation has solved just all that electric furnace is produced the pollution on the environment problem and the waste problem that do not solve heat.The dedusting suction inlet of uhp electric arc furnace adopts roof cover and the 4th hole smoke evacuation mode that combines, and normal to smelt with the smoke evacuation of the 4th hole be main, and the smoke evacuation of the 4th hole is that inner flue gas of the stove is directly extracted out, so that produce little negative pressure in the stove, smelts power consumption thereby reduce.The 4th hole exhaust gas dust amount is very big, temperature is very high, must remove massive dust through settling pocket, again through mechanical cooler to flue gas cool-down and join wild wind automatically, the fly-ash separator of being allowed for access is discharged from chimney at last.
Existing Electric furnace steel making system; Mainly contain two kinds from the heat energy utilization of electric furnace flue gas outlet: the steel scrap preheating with utilize waste heat generation steam, though both recycle waste heat, effect is all not obvious; The former preheating scrap is only good to the steel scrap pre-heat effect on surface; The The latter waste heat produces steam and changed by the steelmaking process cycle, and the steam of generation cuts in and out, and is not easy to use.
In the process for making,, cause that answering property is good, the slag of reasonable quantity in order to remove impurity such as dephosphorization, sulphur; Need to add auxiliary material, institute adds auxiliary material must be dry, in order to avoid hydrogen is excessive in the molten steel; In the strand process of cooling; The very big negative pressure of inner generation makes hydrogen separate out the formation bubble hydrogen, and the product inside after rolling the becoming a useful person has crack, surface that quality accidents such as the skin of sticking up are arranged.Because of four seasons air humidity varies is very big, so, need heat drying, to guarantee quality product to some auxiliary material such as the lime that very is prone to suction.
Contain a large amount of sensible heats and chemical energy in the high-temperature flue gas that above-mentioned one side Electric furnace steel making produces, the flue gas medial temperature that gets into settling pocket is up to 450 ℃, and dedusting need be to flue gas cool-down; On the other hand; Auxiliary material needs heat baking, if can design a kind of Electric furnace steel making system, and this system can not only utilize the heat energy in the electric furnace flue gas; Also can improve the steel-making quality product, to promoting that enterprise development has great importance.
The utility model content
The utility model provides a kind of heat energy that makes full use of in the electric furnace flue gas, reduces enterprise production cost and the efficient Electric furnace steel making system that increases economic efficiency, and this system makes heat energy recycling, does not receive the influence and the products obtained therefrom quality of flue-gas temperature fluctuation good.
The above-mentioned technical purpose of the utility model is achieved through following technical scheme: a kind of efficient Electric furnace steel making system; Comprise electric furnace with exhanst gas outlet, with settling pocket, auxiliary material storehouse that the electric furnace flue gas outlet is connected, it is characterized in that: said settling pocket bottom is installed with support; Said support is provided with heat exchanging pipe; The import of said heat exchanging pipe links to each other with a blower fan.The outlet of said heat exchanging pipe is communicated with house steward, and house steward is communicated with exhaust system, and described exhaust system is arranged in the auxiliary material storehouse.
Said exhaust system is made up of vertical tube, the spout that is horizontally installed on the transverse tube in the auxiliary material storehouse and is evenly arranged on the transverse tube that is connected with vertical tube, and Open Side Down for said spout, and said transverse tube two ends are provided with the sealing stifle.
The support that said heat exchanging pipe bottom is provided with cam base plate and above-mentioned settling pocket bottom is connected.
In order to guarantee that warm air gets into the temperature in auxiliary material storehouse, the house steward of said connection heat exchanging pipe and exhaust system need adopt asbestos insulation or use insulating pipe, and house steward is provided with variable valve, can regulate free air delivery as required.
Said spout and transverse tube angle θ are 45 o, hot gas is disperseed to auxiliary material storehouse all directions, reach the purpose of abundant heat drying auxiliary material.
According to the temperature of electric furnace outlet flue gas, and the historical thermograph of settling pocket, confirm air quantity, preset air flow time in heat exchanging pipe according to the flow velocity requirement of pipeline air-supply, is confirmed 8 road heat exchanging pipes arranged side by side.
Further preferred as the utility model, said blower fan is a centrifugal high pressure fan.
Further; The flue gas of the electric furnace outlet of the utility model gets into settling pocket; The heat exchanging pipe in the natural air input settling pocket, send into the auxiliary material storehouse from heat exchanging pipe heat outputting air after the high-temperature flue gas heating in settling pocket, through centrifugal high pressure fan through the rejected heat of the spout down air of evenly arranging on the transverse tube in the auxiliary material storehouse; Thereby it is dry that auxiliary material in the auxiliary material storehouse is mainly the lime even heating, and the auxiliary material lime after the heating is sent into and is used for Electric furnace steel making in the electric furnace.After the Electric furnace steel making system came into operation, the hot air temperature that comes out from spout reached about 150 ℃, and the auxiliary material of the easy suction that the auxiliary material storehouse emits such as lime are very hot, had not only reached to go damp exsiccant effect, and had helped improving the steel-making quality product.
In sum, the outstanding advantage and the beneficial effect of the utility model are:
1, the utility model has become the low-quality flue gas of electric furnace outlet clean warm air and has been used for the auxiliary material heat drying; Dried hot auxiliary material is used further to Electric furnace steel making; Realized the recycle of heat energy, guaranteed product quality simultaneously, reduced the enterprise production cost, improved economic benefit;
2, the native system exhaust system is provided with the downward spout of evenly arranging on transverse tube and the transverse tube; Can make warm air be scattered in the auxiliary material storehouse; Reach purpose, and not only the auxiliary material of internal skin, auxiliary material storehouse is carried out drying, so heat energy has obtained utilizing fully efficiently the abundant heat drying of auxiliary material;
3, the utility model is arranged at heat exchanging pipe in the settling pocket, and compact construction does not take other spaces, and can maximally utilise the heat energy of flue gas in the settling pocket;
4, the heat of the utility model electric furnace outlet flue gas is used for the heat drying auxiliary material, and house steward is provided with variable valve, regulate as required, thus the influence that not fluctuateed by flue-gas temperature.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the left side view in the utility model auxiliary material storehouse.
Among the figure, A is the auxiliary material storehouse, and 1 is settling pocket, and 2 is heat exchanging pipe, and 3 is blower fan, and 4 is transverse tube, and 5 is spout, and 6 is support, and 7 is cam base plate, and 8 is house steward, and 9 is variable valve, and 10 is electric furnace, and 11 is vertical tube.
Embodiment
Below in conjunction with embodiment the utility model is done further explain.
As shown in Figure 1; A kind of efficient Electric furnace steel making system, the settling pocket 1 that comprise electric furnace 10, is connected, two auxiliary material storehouse A with electric furnace 10 exhanst gas outlets with exhanst gas outlet, settling pocket 1 bottom is installed with support 6; Be connected with heat exchanging pipe 2 through a cam base plate 7 on the support 6; The import of heat exchanging pipe 6 links to each other with a centrifugal high pressure fan 3, and outlet is communicated with exhaust system through house steward 8, and exhaust system is arranged among the A of auxiliary material storehouse.House steward 8 is provided with variable valve 9, and outside surface adopts the asbestos insulation, guarantees that warm air gets into the temperature of auxiliary material storehouse A.According to 40t electric furnace settling pocket 1 historical thermograph, confirm air quantity 1700m 3/ h, preset air flow time in heat exchanging pipe 2 is confirmed No. 8 heat transfer tubes arranged side by side.As shown in Figure 2, be furnished with the transverse tube 4 that is connected with vertical tube 11 of four layers of arranged transversely in the auxiliary material storehouse, evenly be furnished with the spout 5 that Open Side Down on the transverse tube 4, spout 5 is 45 with transverse tube 4 angle θ o, stifle (not indicating among the figure) sealing and dustproof is used at transverse tube 4 two ends.
The flue gas from electric furnace 10 outlets of the utility model gets into settling pocket; Import the heat exchanging pipe 2 in the settling pocket to natural air through centrifugal high pressure fan 3; Send into auxiliary material storehouse A from heat exchanging pipe 2 heat outputting air after the high-temperature flue gas heating in settling pocket; Through the 5 rejected heat air of evenly arranging on the transverse tube 4 in the A of auxiliary material storehouse of spout down, thereby dry to auxiliary material lime even heating in the auxiliary material storehouse, the auxiliary material lime after the heating is sent in the electric furnace 10 again and is used for Electric furnace steel making.The utility model has been realized utilizing fully efficiently of heat energy, does not receive the influence of flue-gas temperature fluctuation, has guaranteed product quality simultaneously.
This specific embodiment only is the explanation to the utility model; It is not the restriction to the utility model; Those skilled in the art can make any modification to present embodiment as required after reading this specification sheets, but as long as in the claim scope of the utility model, all receive the protection of patent law.

Claims (7)

1. an efficient Electric furnace steel making system comprises the electric furnace (10) with exhanst gas outlet, settling pocket (1), auxiliary material storehouse (A) that is connected with electric furnace (10) exhanst gas outlet, it is characterized in that: said settling pocket (1) bottom is installed with support (6); Said support (6) is provided with heat exchanging pipe (2); The import of said heat exchanging pipe (2) links to each other with a blower fan (3); The outlet of said heat exchanging pipe (2) is communicated with house steward (8), and house steward (8) is communicated with exhaust system, and described exhaust system is arranged in the auxiliary material storehouse (A);
Said exhaust system is made up of vertical tube (11), the spout (5) that is horizontally installed on the transverse tube (4) in the auxiliary material storehouse (A) and is evenly arranged on the transverse tube (4) that is connected with vertical tube (11); Open Side Down for said spout (5), and said transverse tube (4) two ends are provided with the sealing stifle.
2. a kind of efficient Electric furnace steel making according to claim 1 system, it is characterized in that: said heat exchanging pipe (2) bottom is provided with cam base plate (7) and is connected with said support (6).
3. a kind of efficient Electric furnace steel making according to claim 1 system, it is characterized in that: said house steward (8) adopts the asbestos insulation or uses insulating pipe.
4. according to claim 1 or 3 described a kind of efficient Electric furnace steel making systems, it is characterized in that: said house steward (8) is provided with variable valve (9).
5. a kind of efficient Electric furnace steel making according to claim 1 system, it is characterized in that: said spout (5) is 45 with transverse tube (4) angle θ o
6. a kind of efficient Electric furnace steel making according to claim 1 system, it is characterized in that: said heat exchanging pipe (2) comprises No. 8 heat transfer tubes.
7. a kind of efficient Electric furnace steel making according to claim 1 system, it is characterized in that: said blower fan (3) is a centrifugal high pressure fan.
CN2011202531242U 2011-07-18 2011-07-18 High-efficiency electric furnace steel making system Expired - Fee Related CN202157087U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011202531242U CN202157087U (en) 2011-07-18 2011-07-18 High-efficiency electric furnace steel making system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011202531242U CN202157087U (en) 2011-07-18 2011-07-18 High-efficiency electric furnace steel making system

Publications (1)

Publication Number Publication Date
CN202157087U true CN202157087U (en) 2012-03-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

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CN (1) CN202157087U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102242237A (en) * 2011-07-18 2011-11-16 永兴特种不锈钢股份有限公司 High efficient electric furnace steel-making system
CN103424004A (en) * 2012-05-10 2013-12-04 阿尔斯通技术有限公司 Integrated gas cooling system for electric arc furnace

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102242237A (en) * 2011-07-18 2011-11-16 永兴特种不锈钢股份有限公司 High efficient electric furnace steel-making system
CN103424004A (en) * 2012-05-10 2013-12-04 阿尔斯通技术有限公司 Integrated gas cooling system for electric arc furnace
EP2662459A3 (en) * 2012-05-10 2014-01-08 Alstom Technology Ltd Integrated gas cooling system for electric arc furnace
CN103424004B (en) * 2012-05-10 2017-04-12 通用电器技术有限公司 integrated gas cooling system for electric arc furnace

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C14 Grant of patent or utility model
GR01 Patent grant
CP01 Change in the name or title of a patent holder
CP01 Change in the name or title of a patent holder

Address after: 313005, Huzhou Economic Development Zone, Zhejiang Province Yang Port Industrial Zone

Patentee after: Yongxing special material technology Co., Ltd

Address before: 313005, Huzhou Economic Development Zone, Zhejiang Province Yang Port Industrial Zone

Patentee before: Yongxing Special Stainless Steel Co., Ltd.

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120307

Termination date: 20200718