CN207062310U - Blast furnace blowing Fuel lance - Google Patents

Blast furnace blowing Fuel lance Download PDF

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Publication number
CN207062310U
CN207062310U CN201720702525.9U CN201720702525U CN207062310U CN 207062310 U CN207062310 U CN 207062310U CN 201720702525 U CN201720702525 U CN 201720702525U CN 207062310 U CN207062310 U CN 207062310U
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CN
China
Prior art keywords
blast furnace
wear
coal dust
resistant steel
fuel lance
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Application number
CN201720702525.9U
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Chinese (zh)
Inventor
陶保国
王俊
黄琦
邹展
张松良
周瑶
章金法
邹煜珵
丁雪明
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CHANGSHU BURNER FACTORY Co Ltd
Baoshan Iron and Steel Co Ltd
Original Assignee
CHANGSHU BURNER FACTORY Co Ltd
Baoshan Iron and Steel Co Ltd
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Priority to CN201720702525.9U priority Critical patent/CN207062310U/en
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Abstract

The utility model discloses a kind of blast furnace blowing Fuel lance, it is free from the single-barrel of outer cool air hose, including the entrance being sequentially connected, expand pipeline section and ejiction opening section, the entrance is taken over including coal dust, the expansion pipeline section includes the wear-resistant steel pipe being connected with coal dust adapter, the gun barrel being connected with wear-resistant steel pipe, the ejiction opening section includes the nipple being connected with gun barrel, the composite ceramics short tube with angle being connected with nipple, the junction of the wear-resistant steel pipe and gun barrel is arranged with the first adapter sleeve, the junction of wear-resistant steel pipe and the coal dust adapter is arranged with the second adapter sleeve, and head end is locked in coal dust adapter by locking nut, fibre sleeving is arranged with the gun barrel, the fibre sleeving passes through retainer ring spacing, the junction of nipple and the composite ceramics short tube is arranged with protecting pipe.By the above-mentioned means, the utility model can reduce cost, abrasion of the coal stream to air port is reduced, reduces abnormal damping down probability, increases service life, improves operating rate of blast furnace.

Description

Blast furnace blowing Fuel lance
Technical field
Coal powder blowing device field is the utility model is related to, more particularly to a kind of blast furnace blowing Fuel lance.
Background technology
Modern blast furnace all increases Pulverized Coal injection technology to reduce iron(-)coke ratio using from blast-furnace tuyere.Into blast furnace The partial action of the alternative coke of coal injection fuel, and its injection is horizontal with how much embodiments of ton iron injecting coal quantity.
In order to improve the service life of coal powder lance, many blast furnaces are so moved using the pulverized coal gun of the outer cold wind of double-jacket tube band Power consumption improves, production cost increase;In coal injection fuel, in order to reduce fuel cost, some blast furnaces are in coal blending process In also add part coke powder and semi-coke, due to the raising of part of fuel particulate matter hardness, cause spray gun wearability to reduce, the life-span Shorten;Some blast furnaces use straight tube rifle, and bias current is easily produced after gun head deforms, air port is washed away and causes heavy wear Meet an urgent need afterwards damping down, direct shadow is to blast furnace casting amount.
According to the normal periodical repair damping down characteristic of blast furnace, the service life cycle of coal rifle is matching the most rationally, in order to solve Coal rifle does not reduce spray gun service life after cancelling outer cold wind;The ejiction opening of leave strip elbow is without easy to wear;Solve to lead in spray gun The wear-resisting problem in road contraction section hot junction;Cold end coal powder entrance line;Spray gun stabilization supports five aspects, makees technological improvement.
Utility model content
The utility model mainly solving the technical problems that:In view of the shortcomings of the prior art, there is provided a kind of blast furnace blowing combustion Expect spray gun, cost can be reduced, reduce abrasion of the coal stream to air port, reduce abnormal damping down probability, increase service life, improve Operating rate of blast furnace.
In order to solve the above technical problems, the technical scheme that the utility model uses is:A kind of blast furnace blowing combustion is provided Expect spray gun, the blast furnace blowing Fuel lance is the single-barrel without outer cool air hose, including entrance, the expansion pipe being sequentially connected Section and ejiction opening section, the entrance are taken over including coal dust, and the expansion pipeline section is wear-resisting including being connected with coal dust adapter Steel pipe, the gun barrel being connected with the wear-resistant steel pipe, the ejiction opening section include be connected with the gun barrel nipple, with it is described short The connected composite ceramics short tube with angle of adapter, the junction of the wear-resistant steel pipe and gun barrel is arranged with the first adapter sleeve, institute The junction for stating wear-resistant steel pipe and coal dust adapter is arranged with the second adapter sleeve, and head end is locked in coal dust by locking nut and taken over On, fibre sleeving is arranged with the gun barrel, the fibre sleeving passes through retainer ring spacing, the company of nipple and the composite ceramics short tube The place of connecing is arranged with protecting pipe.
In one preferred embodiment of the utility model, the coal dust adapter is both ends band shrinkage expansion, and centre is straight-through Removable no-welding alloy pipe.
In one preferred embodiment of the utility model, the coal dust takes over the superficial hardness number after Technology for Heating Processing HRC > 50.
In one preferred embodiment of the utility model, the wear-resistant steel pipe is thermally treated alloy pipe, at its heat Hardness number HRC > 50 after reason.
In one preferred embodiment of the utility model, the composite ceramics short tube is to use self- propagating aluminium with angle The composite ceramics short tube that heat-cladding method sintering forms.
In one preferred embodiment of the utility model, the nipple is with the inserting type ceramics nipple shunk.
In one preferred embodiment of the utility model, the protecting pipe is to strengthen protective metal shell pipe.
In one preferred embodiment of the utility model, the fibre sleeving is stabilization heat resistance fiber set.
In one preferred embodiment of the utility model, it is connected with and is arranged between first adapter sleeve and the second adapter sleeve Transition steel tube on wear-resistant steel pipe.
The beneficial effects of the utility model are:By cancelling the outer cool air hose of blast furnace blowing dye sprayer, height can be reduced The power consumption of stove injection system, maintenance of equipment, the cost of labour;By designing the shower nozzle with angle(Ejiction opening section), make The ejiction opening center of spray gun at utmost overlaps with blast-furnace tuyere axial line, can reduce abrasion of the coal stream to air port, thus makes Abnormal damping down probability reduces caused by being worn due to blast-furnace tuyere;Under conditions of spray gun service life is not reduced, it can change Blast furnace blowing fuel Blending, increase coke powder, semi-coke proportioning, saves fuel cost.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the preferred embodiment of blast furnace blowing Fuel lance one of the utility model;
Fig. 2 is a kind of left view of blast furnace blowing Fuel lance shown in Fig. 1;
Fig. 3 is I partial enlarged drawing shown in Fig. 1;
Fig. 4 is II partial enlarged drawing shown in Fig. 1;
Fig. 5 is III partial enlarged drawing shown in Fig. 1;
The mark of each part is as follows in accompanying drawing:1st, composite ceramics short tube, 2, nipple, 3, gun barrel, the 4, first adapter sleeve, 5, Wear-resistant steel pipe, 6, transition steel tube, the 7, second adapter sleeve, 8, locking nut, 9, coal dust adapter, 10, protecting pipe, 11, back-up ring, 12, Fibre sleeving.
Embodiment
Preferred embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings, so that the advantages of the utility model It can be easier to be readily appreciated by one skilled in the art with feature, it is apparent clear and definite so as to be made to the scope of protection of the utility model Define.
Referring to Fig. 1, the utility model embodiment includes:
A kind of blast furnace blowing Fuel lance, the blast furnace blowing Fuel lance are the single-barrel without outer cool air hose, including Entrance, expansion pipeline section and the ejiction opening section being sequentially connected.
The entrance includes coal dust adapter 9;The coal dust adapter 9 is both ends band shrinkage expansion, and centre can for straight-through Tear the alloy pipe of no-welding open, material 40Cr, the superficial hardness number HRC > 50 after Technology for Heating Processing, can solve the problem that pressure When flowing into gun inlets section through stokehold flexible pipe, stop valve Biased flow phenomenon occurs for contracting air and coal dust gas-particle two-phase, in gun barrel inwall Cause local scour, groove, pit occur, be eventually developed to gun barrel perforation, coal phenomenon of leaking out occur, play to compressed air and The effect of coal dust gas-particle two-phase line.
Wear-resistant steel pipe 5 that the expansion pipeline section includes being connected with the coal dust adapter 9, it is connected with the wear-resistant steel pipe 5 Gun barrel 3;The wear-resistant steel pipe 5 is thermally treated alloy pipe, material 40Cr, its hardness number HRC > 50 after being heat-treated, When compressed air and coal dust Dual-Phrase Distribution of Gas olid, which enter, expands pipeline section, can prevent because expansion aggravation suddenly produces part to tube wall Abrasion.
Nipple 2 that the ejiction opening section includes being connected with the gun barrel 3, be connected with the nipple 2 with angle Composite ceramics short tube 1;The composite ceramics short tube 1 is compound to be formed with angle using self- propagating aluminothermy-cladding method sintering Ceramic short tube;The nipple 2 is with the inserting type ceramics nipple shunk;The company of the nipple 2 and composite ceramics short tube 1 The place of connecing is arranged with protecting pipe 10, and the protecting pipe 10 is to strengthen protective metal shell pipe, can solve the problem that single tube coal rifle hot conditions without outer In the case of cold wind protection, the problem of the abrasion to spray gun vias inner walls of compressed air and coal dust Dual-Phrase Distribution of Gas olid and structural strength.
The junction of the wear-resistant steel pipe 5 and gun barrel 3 is arranged with the first adapter sleeve 4, wear-resistant steel pipe 5 and the coal dust adapter 9 junction is arranged with the second adapter sleeve 7, and head end is locked in coal dust adapter 9 by locking nut 8, first connection Set 4 and second is connected with the transition steel tube 6 being set on wear-resistant steel pipe 5 between adapter sleeve 7, first adapter sleeve 4 and described Second adapter sleeve 7 is the transition member required for solving spray gun welding.
Fibre sleeving 12 is arranged with the gun barrel 3, the fibre sleeving 12 is spacing by back-up ring 11, and the fibre sleeving 12 is to adopt With the stabilization heat resistance fiber set of vacuum forming, antihunt action can be effectively played.
The utility model is according to the slotting gun barrel different angle on the different diameters of single-barrel gun barrel 3 and straight blowing pipe of blast furnace, design Band angle(It is variable)Self- propagating aluminothermic process composite ceramics short tube 1, by during actual coal powder injection and jetting pressure adjust ejiction opening it is straight Footpath.Consider that single-barrel gun barrel 3 there will be certain rigidity, its caliber is more bigger than self- propagating aluminothermic process composite ceramics 1 diameter of short tube, is Solve the problems, such as that coal dust channel part reducing brings the inwall of gun barrel 3 easily to wear, devise bore, length, angle adjustable Ceramic nipple 2, forms smoothly transitting for inwall, efficiently solves wear-resisting problem of the pipette tips part under the conditions of high wind-warm syndrome. At coal powder entrance end, due to flexible pipe Curvature varying, coal dust two-phase flow has produced Biased flow phenomenon at gun inlets, is asked for this Topic, spray gun cold end devises folding band and shunk-leading directly to-expansion steel alloy and thermally treated coal dust adapter 9, in body of a gun sheet On body, add the steel alloy of certain length with the folding connection place of coal dust adapter 9 and thermally treated liner taken over --- Wear-resistant steel pipe 5, outside wear-resistant steel pipe 5, be nested low 4 and 7 convenient welding of conjunction both ends band internal thread adapter sleeve.To prevent coal rifle being blown During shake, the strong point of fibre sleeving 12 is additionally arranged on gun barrel 3, both high temperature resistant and can absorb vibration.
Coal powder lance is one of visual plant in bf coal injection system, the installation of blast furnace blowing Fuel lance of the present utility model Mode is that angle-inserting type inserts from straight blowing pipe of blast furnace, at a certain angle with air port center line shape.Coal dust is by Geldart-D particle from spray Rifle entrance(Cold end)Access, through gun barrel passage from ejiction opening section(Hot junction)Spray to belly pipe, in order to avoid or reduce coal stream pair The erosive wear in air port, the center line of coal rifle ejiction opening section and the center line of coal rifle entrance preset certain angle, make ejection Coal stream is overlapped on the center line of air port.Because coal rifle passage is non-isometrical, on coal rifle cold end, hot junction passage with local reducing with And the ejiction opening with angle, while coal powder lance employs different materials, structure and process, the abrasion for solving single tube coal rifle Problem, the service life of single-barrel is added, while accordingly extend supply opening model, improve operating rate of blast furnace.
The utility model discloses a kind of blast furnace blowing Fuel lance, by the outer cold wind for cancelling blast furnace blowing dye sprayer Pipe, can reduce the power consumption, maintenance of equipment, the cost of labour of system of blast furnace injection;By designing the shower nozzle with angle (Ejiction opening section), the ejiction opening center of spray gun is at utmost overlapped with blast-furnace tuyere axial line, coal stream can be reduced to air port Abrasion, thus reduce abnormal damping down probability caused by being worn due to blast-furnace tuyere;Do not reducing spray gun service life Under the conditions of, blast furnace blowing fuel Blending can be changed, increase coke powder, semi-coke proportioning, save fuel cost.
Embodiment of the present utility model is the foregoing is only, not thereby limits the scope of the claims of the present utility model, it is every The equivalent structure or equivalent flow conversion made using the utility model specification and accompanying drawing content, or be directly or indirectly used in Other related technical areas, similarly it is included in scope of patent protection of the present utility model.

Claims (9)

1. a kind of blast furnace blowing Fuel lance, it is characterised in that the blast furnace blowing Fuel lance is the list without outer cool air hose Pipe rifle, including entrance, expansion pipeline section and the ejiction opening section being sequentially connected, the entrance are taken over including coal dust, the expansion Pipeline section includes the wear-resistant steel pipe being connected with coal dust adapter, the gun barrel being connected with the wear-resistant steel pipe, the ejiction opening section bag Include the nipple being connected with the gun barrel, the composite ceramics short tube with angle being connected with the nipple, the wear-resistant steel pipe The first adapter sleeve is arranged with the junction of gun barrel, the junction of wear-resistant steel pipe and the coal dust adapter is arranged with the second connection Set, and head end is locked in coal dust adapter by locking nut, fibre sleeving is arranged with the gun barrel, the fibre sleeving passes through gear Enclose spacing, the junction of nipple and the composite ceramics short tube is arranged with protecting pipe.
2. blast furnace blowing Fuel lance according to claim 1, it is characterised in that the coal dust adapter is that both ends band shrinks Expansion, centre are the alloy pipe of the removable no-welding led directly to.
3. blast furnace blowing Fuel lance according to claim 1, it is characterised in that the coal dust adapter is through Overheating Treatment work Superficial hardness number HRC > 50 after skill.
4. blast furnace blowing Fuel lance according to claim 1, it is characterised in that the wear-resistant steel pipe is thermally treated Alloy pipe, its hardness number HRC > 50 after being heat-treated.
5. blast furnace blowing Fuel lance according to claim 1, it is characterised in that the composite ceramics short tube is band angle The composite ceramics short tube formed using self- propagating aluminothermy-cladding method sintering.
6. blast furnace blowing Fuel lance according to claim 1, it is characterised in that the nipple is mutually embedding with what is shunk Formula ceramics nipple.
7. blast furnace blowing Fuel lance according to claim 1, it is characterised in that the protecting pipe is to strengthen protective metal shell Pipe.
8. blast furnace blowing Fuel lance according to claim 1, it is characterised in that the fibre sleeving is the heat-resisting fibre of stabilization Dimension set.
9. blast furnace blowing Fuel lance according to claim 1, it is characterised in that first adapter sleeve and the second connection The transition steel tube being set on wear-resistant steel pipe is connected between set.
CN201720702525.9U 2017-06-16 2017-06-16 Blast furnace blowing Fuel lance Active CN207062310U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720702525.9U CN207062310U (en) 2017-06-16 2017-06-16 Blast furnace blowing Fuel lance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720702525.9U CN207062310U (en) 2017-06-16 2017-06-16 Blast furnace blowing Fuel lance

Publications (1)

Publication Number Publication Date
CN207062310U true CN207062310U (en) 2018-03-02

Family

ID=61509805

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720702525.9U Active CN207062310U (en) 2017-06-16 2017-06-16 Blast furnace blowing Fuel lance

Country Status (1)

Country Link
CN (1) CN207062310U (en)

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