CN102445086A - Smoke collecting device of iron tapping hole of rotary electric furnace - Google Patents

Smoke collecting device of iron tapping hole of rotary electric furnace Download PDF

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Publication number
CN102445086A
CN102445086A CN2011102703493A CN201110270349A CN102445086A CN 102445086 A CN102445086 A CN 102445086A CN 2011102703493 A CN2011102703493 A CN 2011102703493A CN 201110270349 A CN201110270349 A CN 201110270349A CN 102445086 A CN102445086 A CN 102445086A
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CN
China
Prior art keywords
electric furnace
flue
collecting hood
tapping hole
fume collecting
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Granted
Application number
CN2011102703493A
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Chinese (zh)
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CN102445086B (en
Inventor
张如海
杨龙军
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Beris Engineering and Research Corp
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Beris Engineering and Research Corp
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Priority to CN 201110270349 priority Critical patent/CN102445086B/en
Publication of CN102445086A publication Critical patent/CN102445086A/en
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Publication of CN102445086B publication Critical patent/CN102445086B/en
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Abstract

The invention discloses a smoke collecting device of an iron tapping hole of a rotary electric furnace. The smoke collecting device comprises a smoke collecting hood (2) arranged around the iron tapping hole (8), an annular chute (3) fixedly arranged outside the smoke collecting hood (2), an arc-shaped flue (5) matched on the outer side of the chute (3) in a sliding manner, and smoke discharging branch pipes (6) uniformly distributed on the flue (5). The smoke collecting hood (2) and the chute (3) rotate together with a furnace body of the electric furnace (1), and the flue (5) is fixed in a working region. The smoke collecting device of the iron tapping hole of the rotary electric furnace, provided by the invention, is used for perfectly collecting and discharging smoke generated by the rotary furnace in an iron tapping process through matching of the smoke collecting hood and a smoke discharging channel, effectively prevents smoke overflow, feasibly solves the problem of difficulty in collecting the smoke in the iron tapping hole of the rotary electric furnace, and has higher use value.

Description

Rotary electric furnace tapping hole flue gas trapping equipment
Technical field
The present invention relates to a kind of rotary electric furnace tapping hole flue gas trapping equipment, relate in particular to a kind of the rotary electric furnace equipment that the flue gas that produces in the process captures that taps a blast furnace.
Background technology
At present, the fast development at home of ferroalloy smelting technology, electric furnace smelting process is also constantly improving and is changing, and to adapt to the Different products requirement, rotary electric furnace is used and is given birth to.The electric furnace smelting process becomes periodically, and each cycle taps a blast furnace once, and molten iron flows out from tapping hole, receives through ladle and handles.
Electric furnace can produce a large amount of ash-laden gas in the process of tapping a blast furnace, especially when tapping outlet and stifled iron notch, the flue gas of generation is very concentrated, and dust content is high, if untimely collection and purification can cause great pollution to environment.But because the tapping hole flue gas has periodicity, the characteristics that instantaneous exhaust gas volumn is big, and many at the regional process equipment of tapping hole, capture petticoat pipe and pipe arrangement difficulty, handle to flue dust collecting and bring very big difficulty.
In addition, the design of tapping hole exhaust fume collecting hood receives the restriction in space, and it is generally all smaller that petticoat pipe designs, and especially the design arrangement for rotary electric furnace tapping hole enclosure is difficult especially.Rotary electric furnace in process of production can low speed rotation, and the tapping hole that is arranged on the body of heater also can be shifted one's position along with the rotation of electric furnace, has increased to arrange that tapping hole captures the difficulty of petticoat pipe.
Summary of the invention
The object of the present invention is to provide a kind of rotary electric furnace tapping hole flue gas trapping equipment, be mainly used in the flue gas that rotary electric furnace is produced and carry out in time, effectively capture in the process of tapping a blast furnace.
The technical scheme of rotary electric furnace tapping hole flue gas trapping equipment of the present invention is:
A kind of rotary electric furnace tapping hole flue gas trapping equipment comprises:
Be arranged on the exhaust fume collecting hood of electric furnace tapping hole, each exhaust fume collecting hood all surround be arranged on each tapping hole around, the upper outside of exhaust fume collecting hood is provided with exhaust opening, exhaust fume collecting hood rotates with the body of heater of electric furnace;
Slideway, slideway be and the body concentric circulus of the cylindrical furnace of electric furnace, and slideway is fixedly installed on the outside of exhaust fume collecting hood, and slideway also rotates with the body of heater of electric furnace;
Flue, flue are arc-shaped structure, and flue is arranged on the outside of slideway; And be slidingly matched with slideway, flue is fixed, can slide each other through slideway and flue during the exhaust fume collecting hood rotation; Exhaust opening on flue and the exhaust fume collecting hood links, and flue gas gets into flue from the exhaust opening on the exhaust fume collecting hood;
The smoke evacuation arm, the smoke evacuation arm is at least one, and the smoke evacuation arm is arranged on the flue, with flue UNICOM.
In addition, slideway comprises two slide rails, and a slide rail is fixedly installed on the upper end of exhaust opening on the exhaust fume collecting hood, and another slide rail is fixedly installed on the lower end of exhaust opening on the exhaust fume collecting hood.Be provided with baffle plate in the slideway, baffle plate is fixed in the middle of two slide rails of slideway, baffle plate with exhaust fume collecting hood on the corresponding position of exhaust opening offer hole.
The side that flue and slideway are adjacent is uncovered structure, respectively is provided with a slide rail that matches with slideway on the upper and lower edge of the uncovered side of flue, and flue is semicircle, is arranged on 180 ° of scopes of slideway.The smoke evacuation arm that is connected with flue is provided with valve, and the valve on the smoke evacuation arm is a flap valve.
Exhaust fume collecting hood the side near electric furnace body be provided with body of heater on the hooked projection that matches of groove.The bottom cover body of exhaust fume collecting hood comprises movable coverboard and fixing coverboard; Fixedly coverboard is fixedly installed on the body of heater of electric furnace, and movable coverboard is arranged on the fixedly outside of coverboard, with fixedly coverboard flexible connection; Movable coverboard is opened at Tie Kou and is opened when the machine of blocking up shifts out, and when tapping hole taps a blast furnace, closes.
The mode of rotary electric furnace tapping hole flue gas trapping equipment of the present invention through adopting exhaust fume collecting hood to match with smoke discharging pipe solved the difficult problem of flue gas collection that rotary electric furnace tapping hole exists effectively.And; Rotary electric furnace tapping hole flue gas trapping equipment of the present invention has effectively utilized the free space at tapping hole place on arranging; Petticoat pipe is employed in side top and smoke discharging pipe ways of connecting, makes exhaust fume collecting hood can make full use of the headroom of tapping hole top, and the exhaust fume collecting hood inner space is strengthened.But the holdup time of prolong smoke in cover avoids flue gas excessive when moment, exhaust gas volumn increased.
In addition, rotary electric furnace tapping hole flue gas trapping equipment of the present invention is provided with ring baffle and slideway at exhaust fume collecting hood and annular flue junction, is convenient on the one hand adjustment is installed, and can make that on the other hand interface is tightr, and minimizing is leaked out.Rotary electric furnace tapping hole flue gas trapping equipment of the present invention in actual production process convenient in application, to capture flue gas effective, has bigger market value.
Description of drawings
Fig. 1 is the structural representation of rotary electric furnace tapping hole flue gas trapping equipment of the present invention;
Fig. 2 is the A-A cutaway view of rotary electric furnace tapping hole flue gas trapping equipment among Fig. 1;
Fig. 3 is the rearview of exhaust fume collecting hood in the rotary electric furnace tapping hole flue gas trapping equipment of the present invention;
Fig. 4 is the side view of exhaust fume collecting hood in the rotary electric furnace tapping hole flue gas trapping equipment of the present invention;
Fig. 5 is the example arrangement figure of rotary electric furnace tapping hole flue gas trapping equipment of the present invention.
The specific embodiment
In order better to understand the object of the invention, structure and function,, a kind of rotary electric furnace tapping hole flue gas trapping equipment of the present invention is done further detailed description below in conjunction with accompanying drawing.
Like Fig. 1, shown in 5, rotary electric furnace of the present invention is provided with several tapping holes 8, and tapping hole 8 is evenly distributed on the body of heater border of electric furnace 1, and the molten iron of smelting in the electric furnace 1 flows out from tapping hole 8, receives through ladle 10 and handles.Exhaust fume collecting hood 2 in the rotary electric furnace tapping hole flue gas trapping equipment of the present invention surrounds and is arranged on around the tapping hole 8, and corresponding one by one with tapping hole 8 on electric furnace 1 border.
Like Fig. 3 and shown in Figure 4, exhaust fume collecting hood 2 is provided with hooked projection 21 near a side of electric furnace 1 body of heater, corresponding, the body of heater around the tapping hole 8 is provided with the groove (not shown).Through cooperating of hooked projection 21 on the exhaust fume collecting hood 2 and body of heater upper groove, exhaust fume collecting hood 2 is fixed on tapping hole 8 places, make exhaust fume collecting hood 2 to rotate with body of heater.
In addition, be formed with exhaust opening 22 in the upper outer of exhaust fume collecting hood 2, exhaust opening 22 links with the flue 5 that hereinafter will be described, and exhaust opening 22 is mainly used in the flue gas that exhaust fume collecting hood 2 is collected and discharges.Among the present invention exhaust fume collecting hood 2 adopt sides top openings and with the structure that smoke discharging pipe links, make exhaust fume collecting hood 2 can make full use of the space of tapping hole 8 tops, exhaust fume collecting hood 2 inner spaces are strengthened.When the moment of rotary electric furnace, exhaust gas volumn increased, effectively the holdup time of prolong smoke in exhaust fume collecting hood 2, avoided flue gas excessive.
As shown in Figure 4, the bottom cover body of exhaust fume collecting hood 2 mainly is made up of movable coverboard 23 and fixing coverboard 24, and fixedly coverboard 23 is fixedly installed on the body of heater of electric furnace 1, and movable coverboard 23 is arranged on the fixedly outside of coverboard 24, with fixedly coverboard 24 flexible connections.Because the open and close of tapping hole 8 need be driven the machine of blocking up 9 through the iron mouth and controlled, and the iron mouth is driven the machine of blocking up 9 and when work, is needed certain revolution space.So when Tie Kou drives the machine of blocking up 9 and shifts out, can movable coverboard 23 be opened, enough revolution spaces arranged so that the iron mouth is driven the machine of blocking up 9.And when tapping hole 8 taps a blast furnace, then close movable coverboard 23, to guarantee the closure of exhaust fume collecting hood 2, prevent that flue gas is excessive.
In addition, as shown in Figure 3, the inner hull 25 of exhaust fume collecting hood 2 covers on the body of heater surface that tapping hole 8 borders leak outside, to prevent the high-temperature flue gas scaling loss body of heater surface of tapping hole 8 places discharging.And the inside of exhaust fume collecting hood 2 also can sprayable refractory, and naked light and high-temperature flue gas when avoiding tapping hole 8 to tap a blast furnace damage exhaust fume collecting hood 2.
As shown in Figure 1, be set with slideway 3 in the outside of exhaust fume collecting hood 2, slideway 3 is and the concentric circulus of electric furnace 1 body of heater.As shown in Figure 3, slideway 3 is made up of two slide rails, and a slide rail is fixed on the upper end of the exhaust opening 22 of exhaust fume collecting hood 2, and another slide rail is fixed on the lower end of the exhaust opening 22 of exhaust fume collecting hood 2, and the exhaust opening 22 of each exhaust fume collecting hood 2 all places slide rail 3 inside.
In addition, in slideway 3, be provided with baffle plate 4, baffle plate 4 is welded between two slide rails of slideway 3, and offers the hole that is complementary with exhaust opening 22 shapes at exhaust opening 22 places of each exhaust fume collecting hood 2, so that flue 5 UNICOMs that exhaust fume collecting hood 2 and hereinafter will be described.Can know that to sum up exhaust fume collecting hood 2, slideway 3 and baffle plate 4 all are fixedly installed on the body of heater of electric furnace 1, and rotate with body of heater.
Flue 5 is an arc-shaped structure, is arranged on the outside of slideway 3, can adjust the length of flue 5 according to actual conditions, and the length of flue 5 is preferably and can covers the 180 ° of scopes in electric furnace 1 border among the present invention, and flue 5 can be suspended in the working region with structures such as suspension brackets.Flue 5 is an open design with slideway 3 adjacent sides, and respectively is provided with a slide rail on the upper and lower edge of flue 5 uncovered sides, and these two slide rails can match with two slide rails of slideway 3, constitutes slide construction, and flue 5 and exhaust fume collecting hood 2 can be slided each other.Thus flue 5 is got up with exhaust fume collecting hood 2 UNICOMs, and adopt the connected mode of slideway among the present invention, make flue 5 and exhaust fume collecting hood 2 on the basis that can slide each other, reduced the connection slit, prevented the excessive of flue gas effectively.
As shown in Figure 1, also be connected with some smoke evacuation arms 6 at flue 5 away from a side of exhaust fume collecting hood 2.Smoke evacuation arm 6 is evenly arranged on the flue 5, and each bar smoke evacuation arm 6 can accumulate a smoke evacuation total pipeline at last, by the smoke evacuation total pipeline fume centralized is discharged.Also be provided with valve 7 every smoke evacuation on the arm, the open and close of the arm of can realizing through control discharging fume to valve 7, valve 7 is preferably flap valve among the present invention.
As shown in Figure 5, the course of work of rotary electric furnace tapping hole flue gas trapping equipment of the present invention is:
In the smelting process, the body of heater low speed rotation of electric furnace 1, the exhaust fume collecting hood 2 that is fixed on the body of heater also follows body of heater to rotate synchronously, and flue 5 is then fixed, and slides each other through slideway 3 and exhaust fume collecting hood 2.When electric furnace 1 need tap a blast furnace, at first, confirm best tapping hole 8 according to the relative position of each tapping hole 8 with each smoke evacuation arm 6, usually with smoke evacuation arm 6 over against tapping hole 8 be best tapping hole.
Then; Operating personnel open in movable type and on the machine operation platform 11 of blocking up ladle 10, Tie Kou are driven the machine of blocking up 9 and move to corresponding position; And the valve 7 on the smoke evacuation arm 6 that will be relative with best tapping hole 8 is opened; Simultaneously, guarantee that the valve on other smoke evacuation arms is closed condition, to strengthen smoke discharging effect.
At last, the molten iron in the electric furnace 1 flows out from tapping hole 8, enters into ladle 10.And the flue gas of following molten iron from electric furnace 1, to discharge is together then collected by the exhaust fume collecting hood that is arranged on tapping hole 8 places 2.Flue gas gets into flue 5 from the exhaust opening 22 on exhaust fume collecting hood 2 tops subsequently, and is discharged by the smoke evacuation arm 6 that is connected on the flue 5.After the process of tapping a blast furnace finished, operating personnel drove the machine of blocking up 9 through the iron mouth tapping hole 8 are closed, and electric furnace 1 continues smelting process, prepared to tap a blast furnace next time.
Rotary electric furnace tapping hole flue gas trapping equipment of the present invention cooperates through exhaust fume collecting hood and discharge flue; The flue gas that ideally rotary electric furnace is produced in the process of tapping a blast furnace is collected, is discharged; And prevented that effectively flue gas is excessive; Conscientiously solve the difficult problem of flue gas collection that rotary electric furnace exists, had higher use value.
More than by specific embodiment the present invention is further described; But it should be understood that; Here concrete description; Should not be construed as qualification, the various modifications that the one of ordinary skilled in the art makes the foregoing description, the scope that all belongs to the present invention and protected after reading this specification to essence of the present invention and scope.

Claims (9)

1. a rotary electric furnace tapping hole flue gas trapping equipment is characterized in that, comprising:
Be arranged on the exhaust fume collecting hood (2) of the tapping hole (8) of electric furnace (1), each exhaust fume collecting hood (2) all surround be arranged on each tapping hole (8) around, the upper outside of exhaust fume collecting hood (2) is provided with exhaust opening (22), exhaust fume collecting hood (2) rotates with the body of heater of electric furnace (1);
Slideway (3), slideway (3) be and the body concentric circulus of cylindrical furnace of electric furnace (1), and slideway (3) is fixedly installed on the outside of exhaust fume collecting hood (2), and slideway (3) also rotates with the body of heater of electric furnace (1);
Flue (5); Flue (5) is an arc-shaped structure, and flue (5) is arranged on the outside of slideway (3), and is slidingly matched with slideway (3); Flue (5) is fixed; Can pass through slideway (3) during exhaust fume collecting hood (2) rotation and slide each other with flue (5), the exhaust opening (22) on flue (5) and the exhaust fume collecting hood (2) links, and flue gas gets into flue (5) from the exhaust opening (22) on the exhaust fume collecting hood (2);
Smoke evacuation arm (6), smoke evacuation arm (6) is at least one, and smoke evacuation arm (6) is arranged on the flue (5), with flue (5) UNICOM.
2. rotary electric furnace tapping hole flue gas trapping equipment according to claim 1; It is characterized in that; Slideway (3) comprises two slide rails, and a slide rail is fixedly installed on the upper end that exhaust fume collecting hood (2) is gone up exhaust opening (22), and another slide rail is fixedly installed on the lower end that exhaust fume collecting hood (2) is gone up exhaust opening (22).
3. rotary electric furnace tapping hole flue gas trapping equipment according to claim 2; It is characterized in that; Be provided with baffle plate (4) in the slideway (3), baffle plate (4) is fixed in the middle of two slide rails of slideway (3), and baffle plate (4) is upward offering hole in the corresponding position of exhaust opening (22) with exhaust fume collecting hood (2).
4. rotary electric furnace tapping hole flue gas trapping equipment according to claim 3; It is characterized in that; The side that flue (5) is adjacent with slideway (3) is uncovered structure, respectively is provided with a slide rail that matches with slideway (3) on the upper and lower edge of the uncovered side of flue (5).
5. rotary electric furnace tapping hole flue gas trapping equipment according to claim 1 is characterized in that, flue (5) is semicircle, is arranged on 180 ° of scopes of slideway (3).
6. rotary electric furnace tapping hole flue gas trapping equipment according to claim 5 is characterized in that the smoke evacuation arm (6) that is connected with flue (5) is provided with valve (7).
7. rotary electric furnace tapping hole flue gas trapping equipment according to claim 6 is characterized in that, the valve (7) on the smoke evacuation arm (6) is a flap valve.
8. rotary electric furnace tapping hole flue gas trapping equipment according to claim 1 is characterized in that, exhaust fume collecting hood (2) the side near electric furnace (1) body of heater be provided with body of heater on the hooked projection (21) that matches of groove.
9. rotary electric furnace tapping hole flue gas trapping equipment according to claim 8; It is characterized in that the bottom cover body of exhaust fume collecting hood (2) comprises movable coverboard (23) and fixing coverboard (24), fixedly coverboard (23) is fixedly installed on the body of heater of electric furnace (1); Movable coverboard (23) is arranged on the fixedly outside of coverboard (24); With fixedly coverboard (24) flexible connection, movable coverboard (23) is driven the machine of blocking up (9) at Tie Kou and is opened when shifting out, and closes when tapping a blast furnace at tapping hole (8).
CN 201110270349 2011-09-01 2011-09-01 Smoke collecting device of iron tapping hole of rotary electric furnace Active CN102445086B (en)

Priority Applications (1)

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CN 201110270349 CN102445086B (en) 2011-09-01 2011-09-01 Smoke collecting device of iron tapping hole of rotary electric furnace

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Application Number Priority Date Filing Date Title
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CN102445086A true CN102445086A (en) 2012-05-09
CN102445086B CN102445086B (en) 2013-07-24

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104457292A (en) * 2014-11-04 2015-03-25 中国恩菲工程技术有限公司 Split-type furnace hood of rotatable metallurgical furnace and rotatable metallurgical furnace provided with same
CN104630420A (en) * 2015-02-16 2015-05-20 中钢集团天澄环保科技股份有限公司 Smoke collecting system of mobile AOD furnace
CN111742187A (en) * 2018-02-22 2020-10-02 瓦克化学股份公司 Cap for Si-metal outgassing and method for producing silicon using the same

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CN2295178Y (en) * 1997-01-15 1998-10-21 无锡市东方环境工程设计研究所 Electric-oven smoke collecting hood
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CN201166520Y (en) * 2008-06-01 2008-12-17 江阴市盛凯环保设备有限公司 Intermediate frequency furnace flue gas trapping device
CN201330511Y (en) * 2008-12-30 2009-10-21 沈阳远大环境工程有限公司 Secondary fume-collecting hood for electric furnace
JP2010281478A (en) * 2009-06-02 2010-12-16 Kitashiba Electric Co Ltd Dust collector for electric furnace

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2043741U (en) * 1988-12-31 1989-08-30 航天工业部第七0一研究所 Snake bend-type dust-collector
CN2295178Y (en) * 1997-01-15 1998-10-21 无锡市东方环境工程设计研究所 Electric-oven smoke collecting hood
CN201032401Y (en) * 2007-05-11 2008-03-05 权五显 Double-layer flue gas catch moving cover for smelting electric stove
CN201166520Y (en) * 2008-06-01 2008-12-17 江阴市盛凯环保设备有限公司 Intermediate frequency furnace flue gas trapping device
CN201330511Y (en) * 2008-12-30 2009-10-21 沈阳远大环境工程有限公司 Secondary fume-collecting hood for electric furnace
JP2010281478A (en) * 2009-06-02 2010-12-16 Kitashiba Electric Co Ltd Dust collector for electric furnace

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104457292A (en) * 2014-11-04 2015-03-25 中国恩菲工程技术有限公司 Split-type furnace hood of rotatable metallurgical furnace and rotatable metallurgical furnace provided with same
CN104457292B (en) * 2014-11-04 2016-03-30 中国恩菲工程技术有限公司 The split type bonnet of rotatable metallurgical furnace and there is its rotatable metallurgical furnace
CN104630420A (en) * 2015-02-16 2015-05-20 中钢集团天澄环保科技股份有限公司 Smoke collecting system of mobile AOD furnace
CN104630420B (en) * 2015-02-16 2016-07-06 中钢集团天澄环保科技股份有限公司 A kind of portable AOD furnace feeding flue gas gathering system
CN111742187A (en) * 2018-02-22 2020-10-02 瓦克化学股份公司 Cap for Si-metal outgassing and method for producing silicon using the same

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