CN101671569B - Integral casting construction process of dry quenching furnace - Google Patents

Integral casting construction process of dry quenching furnace Download PDF

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Publication number
CN101671569B
CN101671569B CN200910018447A CN200910018447A CN101671569B CN 101671569 B CN101671569 B CN 101671569B CN 200910018447 A CN200910018447 A CN 200910018447A CN 200910018447 A CN200910018447 A CN 200910018447A CN 101671569 B CN101671569 B CN 101671569B
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China
Prior art keywords
dried
stove
gravity flow
formwork
cast
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Expired - Fee Related
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CN200910018447A
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CN101671569A (en
Inventor
刘隆利
陶教祥
王伟
张民强
李克明
吕同军
王介浩
穆允生
李永芳
马健
于咏春
薛鹏
祝学会
李念会
聂昊
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Jinan Iron and Steel Co Ltd
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Shandong Iron and Steel Co Ltd
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Abstract

The invention relates to an integral casting construction process of a dry quenching furnace, comprising the following steps: casting dry quenching furnace cooling sections, outer part of chute bracket front side, two side walls and the bottom of a boiler inlet and a bifurcation chute of a primary dust remover, integrally casting by adopting automatically-flowing casting materials, baking the dry quenching furnace for 65-84 hours at the temperature of no higher than 600 DEG C after finishing casting. Under the condition of not damaging the prior structural conditions of the dry quenching furnace, the invention thoroughly solves the problem that the work amount is large in the prior bricking inlayed repairing scheme, ensures favorable integrity of laid bricks, saves time and material, and has low cost and long service life.

Description

Integral casting construction process of dry quenching furnace
Technical field
Integral casting construction process when the present invention relates to coke dry quenching boiler and building belongs to the coking production equipment technical field.
Background technology
Dry coke quenching is to utilize a kind of method of rare gas element to red burnt cooling, and dry coke quenching is in coke dry quenching boiler (being generally called the dried stove that puts out), to carry out.Because frequent thermal shocking in the dry coke quenching process makes the dried interior masonry of stove that puts out very easily damage, and generally adopts to lay bricks in the overhaul construction process at present and inlays mending option; The conventional scheme of laying bricks quantities is big; The masonry globality is poor, the time-consuming material that takes, and cost is high; Work-ing life is short, also can repeat same damage phenomenon in the some months.
CN101250414 discloses a kind of restoring method for chute of dry quenching furnace, is used to solve the problem that chute of dry quenching furnace is fragile, repair difficulty.The anti-material of used repairing is the mullite silicon carbide gravity flow pouring material; The gravity flow pouring material weight proportion is: aggregate 6~7, matrix 3~4, stainless steel heat-resistant fiber 0.1~0.3; Wherein aggregate is partly by following weight unit proportioning: fused corundom 45~60, high-purity low iron mullite synthesizing 10~20, superfine silit 8~15, matrix part unit by weight is made up of following raw material: high purity silica powder 4~8, silicon carbide ultrafine powder 2~6, rafifinal hydrochlorate 3~5, active alpha-Al 2O 36~10.The refractory materials of apolegamy has remedied the defective that the common medium temperature intensity of anti-the material descends; On constructional method, adopt utilize heat-resisting reinforcing bar do stiffening web, to residual lining surface engaged structure treatment, adopt three on mould around methods such as pillar stiffeners; The repairing lining that makes cast with residual lining firm being meshing with each other be in the same place, further improve the structural stability of integral body.
CN101298565 discloses dry quenching boiler entrance area pouring process, and this top, zone is that arc vault construction bottom is a square structure, leans on the disposable dust remover vault to adopt and the same the building by laying bricks or stones of the used brick of disposable dust remover vault; The brick type is 140 tons of dry coke quenching special bricks; Brick number is GAM2807, and build by laying bricks or stones with GN53-Y108a, GN53-S110a in the expansion joint zone, builds by laying bricks or stones with the GAM2807 brick by boiler side; Need 8 rows altogether; The both sides side wall is built by laying bricks or stones with the standard clay brick, lays bricks with boiler area concatenate rule position, and irregular area is handled with heat insulating casting material.This invention has solved the mould material difficult problem that comes off, guaranteed should the zone insulation, guaranteed normally carrying out of ash discharge operation, help whole dried steady running of putting out stove.
Above patent document all only relates to the dried stove part section reparation of putting out, and how not to destroy dried putting out under the stove original structure situation, puts out whole reparation of stove and does not appear in the newspapers as yet so far dried.
Summary of the invention
To the deficiency of prior art, the present invention provides a kind of integral casting construction process of dry quenching furnace.
Technical scheme of the present invention is following:
A kind of dried stove monolithic casting construction method that puts out comprises the cast of putting out stove cooling section and the positive outside of chute bracket, boiler inlet both walls, bottom and the two fork chutes of disposable dust remover to dried, and step is following:
(1) for the dried stove cooling section that puts out, clean body of wall with pressurized air earlier, clean with clean-out system again; Smear one deck high-temperature interface sticker then, the forked type anchoring piece is installed, intert anchor slot at body of wall; Formwork, it is integrated poured to adopt gravity flow pouring material to carry out, and pour into a mould cooling section loop is a 1-1.2 rice along the furnace wall at every turn; Solidify after one day form removal and continue to top-pour along the furnace wall, one-piece casting thickness is 100-125mm.
(2) for the dried positive outside of stove chute bracket of putting out, earlier the coke powder in residual lining surface and the brickwork joint is removed, cleaned with clean-out system again; To chute bracket front formwork; Flush with the top key brick, the open top perfusion gravity flow pouring material from formwork solidifies form removal after 12 hours.
(3) boiler inlet both walls and bottom are taked the formwork gravity flow pouring, along the vertical molding of boiler inlet both sides metope, gravity flow pouring material cast thickness is 100-125mm, and boiler bottom is directly gone up the self-flowing material cast, cast thickness 100-125mm.
The boiler vault is carried out spray treatment: at first remove the original damaged refractory materials of vault, on anchoring piece, brush pitch, sprayable refractory again, spray material layer thickness 18-20cm.
(4) adopt gravity flow pouring material to carry out the formwork gravity flow for the two fork chutes of disposable dust remover and build, and adopt the stainless steel anchoring piece.
After all cast finishes, the dried stove that puts out was carried out storing time 65-84 hour, temperature is no more than 600 ℃.
Preferably, when the cooling section described in the step (1) is installed the forked type anchoring piece,, treating on the benefit face stiffening web to be installed, and treating the benefit face and carry out the occlusion structure processing treatment, forming occlusion structure for improving the one-piece construction stability of repair layer and primary structure.
Clean-out system described in the above-mentioned steps (1), high-temperature interface sticker all adopt state of the art, but market is bought.
The refractory materials spray material can adopt state of the art in the above-mentioned steps (3), but market is bought.The present invention preferably adopts the P130 refractory materials, and Beijing Ruipu Tongchuang Technology Development Co., Ltd. produces and sells.
Gravity flow pouring material described in above-mentioned each step belongs to repair uses material, can select currently available products for use, buys or press the known technology preparation through market, like the disclosed mullite silicon carbide gravity flow pouring material of CN101250414A.
Gravity flow pouring material described in above-mentioned each step, the preferred heat resistant and wear resistant SFM-2 of the present invention mould material, Beijing Ruipu Tongchuang Technology Development Co., Ltd. produces and sells, and SFM-2 mould material performance sees the following form.
During concrete the construction,, mould is designed based on the dried on-the-spot actual mapping size of stove, the deformed damaged situation put out.
Excellent results of the present invention is following:
The present invention is not destroying dried putting out under the stove original structure situation; Take all factors into consideration the dried project organization that puts out stove chute bracket and cooling section, damage factors such as phenomenon, the source of damage; Thoroughly solve the existing big problem of quantities in the mending option of inlaying of laying bricks, make the dried stove masonry good integrity of putting out, material-saving saves time; Cost is low, the dried stove long service life of putting out in integrated poured repairing back.
Description of drawings
Fig. 1 is the dried stove one-piece construction synoptic diagram that puts out, 1 cooling section, 2 chute brackets.
Fig. 2 is a cooling section anchoring piece scheme of installation, and Fig. 3 is the dried stove cooling section pouring construction synoptic diagram that puts out, anchor slot in the 3 forked type anchoring pieces, 4 bodies of wall, 5 formworks, 12 stiffening webs.
Fig. 4 is dried put out stove chute bracket construction synoptic diagram, 6 chute bracket bodies of wall, 7 top vaults, 8 formworks, 9 open tops.
Fig. 5 is the dried two fork chute construction of stove disposable dust remover back synoptic diagram, 10 pairs of fork chute bodies, 11 pouring layers, the 13 stainless steel anchoring pieces of putting out.
Embodiment
The gravity flow pouring material that uses among the embodiment is the SFM-2 mould material, and Beijing Ruipu Tongchuang Technology Development Co., Ltd. produces and to sell, and composition is: granularity is less than the aggregate 65wt% of 5mm: fused corundom, high-purity low iron mullite synthesizing (Al wherein 2O 365-70%, Fe 2O 3%≤0.3%), silit (purity SiC%>=97%) is pressed (10-11) approximately: 3: 2 weight ratios; Substrate material 35wt%: high purity silica powder, carbide fine powder, rafifinal hydrochlorate were by about 1.5: 1: 1 weight ratios.P130 refractory materials spray material Beijing Ruipu Tongchuang Technology Development Co., Ltd. produces and sells, and is with low iron mullite synthesizing (Fe 2O 3≤0.3%) and A level chamotte (Fe 2O 3≤0.8%) as main material, add aluminate cement, super-fine powder and detonation suppressor, the intensity of this spray material under 500 ℃ reaches 45MPa.The rinse product model is QSJ, and Beijing Ruipu Tongchuang Technology Development Co., Ltd. produces and sells, high-temperature interface binder product SN-800, and Beijing Ruipu Tongchuang Technology Development Co., Ltd. produces and sells.
Embodiment: dried to put out the stove one-piece construction as shown in Figure 1.
1, the dried stove cooling section 1 that puts out adopts mould material this to be carried out integrated poured.Before the cast, body of wall with the pressurized air cleaning, cleans with clean-out system earlier again; Through smearing one deck high-temperature interface sticker, forked type anchoring piece 3 is installed, interting anchor slot 4, increase the sticking power of mould material at last, improve its intensity at body of wall; Formwork 5 backs adopt gravity flow pouring material to carry out integrated poured; Loop is 1.2 meters to each cast cooling section along the furnace wall, solidifies that form removal continues to top-pour after one day, and one-piece casting thickness is 125mm.Peel off the impact with gas with wearing and tearing, the thermal stresses of bearing coke, protect the structural stability of oblique flue, reach and prolong the dry coke quenching purpose in work-ing life.The cooling section anchoring piece is installed as shown in Figure 2, and cooling section pouring construction synoptic diagram is as shown in Figure 3.
2, the positive external overall cast of chute bracket 2, purpose are to prevent that recycle gas and coke powder from further washing away brickwork joint to make its expansion.In order to guarantee to repair part and original residual good structural stability that is lined with, before repairing residual lining has been carried out pre-treatment:
The coke powder in bracket surface and the brickwork joint is removed in the processing on 1. residual lining surface, again with clean-out system to residual lining surface cleaning, so that pouring layer and the residual lining repaired can merge at a certain temperature well.
2. to chute bracket front formwork 8, flush, increase the whole supporting of bracket,, solidify form removal after 12 hours from open top 9 perfusion bracket gravity flow mould material with top vault 7 bricks.
Chute bracket construction synoptic diagram is as shown in Figure 4.
3, take formwork to build gravity flow pouring material to boiler inlet both walls and bottom.Along the vertical molding of boiler inlet both sides metope, gravity flow pouring material cast thickness is 125mm, and boiler bottom is directly gone up the self-flowing material cast, cast thickness 125mm.
The boiler vault is carried out spray treatment: at first remove the original damaged refractory materials of vault, on anchoring piece, brush pitch, sprayable refractory P130 again, spray material layer thickness 20cm.
4, the two fork chutes 10 of disposable dust remover take formwork to build gravity flow pouring material, and adopt stainless steel anchoring piece 13.The two fork chute construction of disposable dust remover back synoptic diagram is as shown in Figure 5.
After all cast finishes, the dried stove that puts out was carried out storing time 84 hours, temperature 500-600 ℃.
Adopted the present embodiment method to carry out the integrated poured construction of coke dry quenching furnace in No. 1 coke dry quenching furnace overhaul in the Laiwu Iron & Steel Group Co., Ltd coke-oven plant process, total 22 days durations, dried putting out 24 months work-ing life of stove.Required expense is yuan (materials cost)=800,000,360,000 yuan of (executive cost)+540,000 yuan, and last time, overhaul cost was 7,200,000 yuan, 12 months work-ing life; Ten thousand yuan of cost saving 720-80/2=680; Save executive cost greatly, shortened the construction period, ensured construction quality.

Claims (2)

1. the dried stove monolithic casting construction method that puts out comprises the cast of putting out stove cooling section and the positive outside of chute bracket, boiler inlet both walls, bottom and the two fork chutes of disposable dust remover to dried, and step is following:
(1) for the dried stove cooling section that puts out, clean body of wall with pressurized air earlier, clean with clean-out system again; Smear one deck high-temperature interface sticker then, the forked type anchoring piece is installed, intert anchor slot at body of wall; Formwork, it is integrated poured to adopt gravity flow pouring material to carry out, and pour into a mould cooling section loop is a 1-1.2 rice along the furnace wall at every turn; Solidify after one day form removal and continue to top-pour along the furnace wall, one-piece casting thickness is 100-125mm;
(2) for the dried positive outside of stove chute bracket of putting out, earlier the coke powder in residual lining surface and the brickwork joint is removed, cleaned with clean-out system again; To chute bracket front formwork; Flush with the top key brick, the open top perfusion gravity flow pouring material from formwork solidifies form removal after 12 hours;
(3) boiler inlet both walls and bottom are taked the formwork gravity flow pouring, along the vertical molding of boiler inlet both sides metope, gravity flow pouring material cast thickness is 100-125mm, and boiler bottom is directly gone up the self-flowing material cast, cast thickness 100-125mm;
The boiler vault is carried out spray treatment: at first remove the original damaged refractory materials of vault, on anchoring piece, brush pitch, sprayable refractory again, spray material layer thickness 18-20cm;
(4) adopt gravity flow pouring material to carry out the formwork gravity flow for the two fork chutes of disposable dust remover and build, and adopt the stainless steel anchoring piece;
After all cast finishes, the dried stove that puts out was carried out storing time 65-84 hour, temperature is no more than 600 ℃.
2. the dried stove monolithic casting construction method that puts out as claimed in claim 1 is characterized in that when the cooling section described in the step (1) is installed the forked type anchoring piece, treating on the benefit face stiffening web to be installed.
CN200910018447A 2009-09-28 2009-09-28 Integral casting construction process of dry quenching furnace Expired - Fee Related CN101671569B (en)

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Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102191066B (en) * 2010-03-03 2013-12-25 五冶集团上海有限公司 Coke dry quenching slope air course supporting brick overhaul construction process
CN102692131B (en) * 2011-03-23 2014-12-17 五冶集团上海有限公司 Method for overhauling fire-resistant material for annular air duct and chute in coke dry quenching furnace
CN102584294B (en) * 2012-02-28 2013-06-05 贵阳东吉博宇耐火材料有限公司 Composite fire-proof material with high refractoriness under load for coke ovens as well as furnace-building process and products thereof
CN102732272A (en) * 2012-07-05 2012-10-17 安阳钢铁股份有限公司 Expansion joint of coke dry quenching chamber recycle gas outlet
CN104019314A (en) * 2014-06-12 2014-09-03 鞍钢股份有限公司 Dry quenching furnace high temperature expansion joint liner constructing method
CN104864700B (en) * 2015-05-28 2017-03-01 青海盐湖工业股份有限公司 A kind of high temperature resistant chute and its processing technology
CN111635770A (en) * 2020-04-08 2020-09-08 宜兴市炉顶密封工程有限公司 Energy-saving type over-temperature pouring method for coke tank

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1266084A (en) * 2000-03-23 2000-09-13 上海宝钢集团公司 Dry extinguishing coke pot flue pipe local overhauling method and equipment thereof
CN101250414A (en) * 2008-04-09 2008-08-27 唐山钢铁股份有限公司 Restoring method for chute of dry quenching furnace
CN101298565A (en) * 2008-06-18 2008-11-05 南京钢铁联合有限公司 Dry quenching boiler entrance area pouring process

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1266084A (en) * 2000-03-23 2000-09-13 上海宝钢集团公司 Dry extinguishing coke pot flue pipe local overhauling method and equipment thereof
CN101250414A (en) * 2008-04-09 2008-08-27 唐山钢铁股份有限公司 Restoring method for chute of dry quenching furnace
CN101298565A (en) * 2008-06-18 2008-11-05 南京钢铁联合有限公司 Dry quenching boiler entrance area pouring process

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JP特开2001-192662A 2001.07.17

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