CN101504250A - Fire-resistant abrasion-proof inner lining structure for heat insulation surface of industrial furnace - Google Patents
Fire-resistant abrasion-proof inner lining structure for heat insulation surface of industrial furnace Download PDFInfo
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- CN101504250A CN101504250A CNA2009100302087A CN200910030208A CN101504250A CN 101504250 A CN101504250 A CN 101504250A CN A2009100302087 A CNA2009100302087 A CN A2009100302087A CN 200910030208 A CN200910030208 A CN 200910030208A CN 101504250 A CN101504250 A CN 101504250A
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Abstract
The invention discloses a refractory wear-resistant lining structure for the thermal insulation surface of an industrial furnace, which comprises a heat resistant bolt, a heat resistant flat cushion, a heat resistant nut and a refractory wear-resistant brick; the refractory and wear-resistant brick is prefabricated for forming; the inside of the refractory wear-resistant brick is provided with a stepped through hole vertically; the fastening end of the heat resistant bolt passes through the wall body of the industrial furnace or a heat insulation casting material and a ceramic fiber brick on the furnace top, and is welded onto a steel plate on the wall body or a steel frame on the furnace top; and the thread end of the heat resistant bolt passes through the stepped through hole of the refractory wear-resistant brick, is arranged into the heat resistant flat cushion and is locked by the heat resistant nut. The refractory wear-resistant lining structure is a novel structure for replacing the prior industrial furnace, in particular the wall body and the furnace top on the heat insulation surface of a circulating fluidized bed boiler. The invention adopts a fixed module type refractory wear-resistant brick structure; because the refractory wear-resistant brick is manufactured by a factory, the refractory wear-resistant brick is not limited by the site construction condition and has easy control in quality, convenient mass production, and small quality difference; and the refractory wear-resistant lining structure has convenient site construction, simple mounting and easy control of mounting quality, and also brings great convenience to overhauling.
Description
Technical field
The present invention relates generally to inner lining structure, specifically is a kind of adiabatic face liner of industrial furnace.
Background technology
Present heat insulation surface of industrial furnace liner, its traditional design and construction all are to adopt heat-resisting bitch fixedly heat-insulation layer and fire-resistant abrasion-proof layer, need on-the-spot formwork erection, with the version of cast of fire-resistant abrasion-proof concrete and heat-resisting steel sheet and plate bracket support fire-resistant abrasion-proof brick.
The structure of this liner has following shortcoming:
1, because the present heat-resisting bitch that adopts all is the Y type, the difficulty of construction of heat-insulation layer increases behind the bitch that welding is gathered, and generally can only smear by hand.Especially the design that has is to adopt hard insulating material (brick) as heat-insulation layer, builds hard insulating material (brick) by laying bricks or stones between the bitch that gathers, and the slit between the masonry is difficult to control, and the insulation quality equally also is difficult to guarantee.
2, the construction of furnace wall is to adopt the heat-resisting bitch of welding Y type earlier, piles up the insulated pouring material by hand or builds hard insulating material (brick) by laying bricks or stones.Formwork erection cast fire-resistant abrasion-proof layer progressively from the bottom up after treating that heat-insulation layer is certain and solidifying.General owing to the construction speed problem, lower floor's construction body does not reach certain solidification intensity and just begins formwork erection cast upper strata fire-resistant abrasion-proof layer.Because actions such as formwork erection and vibrations bring the damage to lower floor's construction body.
3, the construction of furnace roof all is to adopt the densely covered perforate of furnace roof steel plate, welds heat-resisting bitch, support shuttering cast in the stove.Pour into a mould heat-insulation layer behind the cast fire-resistant abrasion-proof layer earlier.The hidden complexity of construction working face especially adopts hard insulating material (brick) as heat-insulation layer as design, and difficulty of construction and construction quality are difficult to control more.The perforate of gathering of furnace roof steel plate destroys the furnace roof overall structure, and casting and constructing refills the tapping steel plate after baker finishes, can't the two sides welding, can only be in surface soldered, and air-tightness and strength of roof are difficult to assurance.
4, in concrete casting process, concrete must lean on the vibrations of plug-in type shock club just can reach best design cast packing ratio (casting quality), though some concrete material " gravity flow ", also must just can reach best accumulation effect by vibrations.Concrete casting and constructing is subjected to the influence of concrete dry humidity and vibrations.Humidity be subjected to the addition, mixing time of concrete bond again and stir after the influence of concrete transportation range (time) length (overlong time can initial set.Material after the initial set of refractories industry regulation generally bans use of).Construction quality also is given a shock the influence of length and the method for time, otherwise construction cognition causes zonal mass deviation.Short construction cognition of vibrations time causes cellular, construction body leakiness; The vibrations overlong time can cause the segregation (than heavy granular materials sinking, light additive material come-up) of construction body, and the quality of all concrete construction bodies is subjected to the restriction of many construction factors.
5, concrete construction body structure such as casting quality have problems, very easily cause the construction body come off and the slit excessive, cause the string fiery phenomenon cause industrial furnace (boiler) exterior wall (wall) overtemperature, equipment damages easily, causes blowing out rate height.
6, after concrete construction body structure such as casting quality go wrong, maintenance difficult.Use enterprise is subjected to operational plan to influence generally shutdown maintenance (unless the bigger timely shutdown maintenance of quality problems meeting occurring) in time after the casting quality problem occurring, if long-play can not get untimely maintenance, the heat-resisting bitch in the position that comes off is ablated.Must be after the blowing out with pneumatic pick coming off and position periphery that the slit is excessive is destroyed certain area waters material feeding construction body, after Construction and Maintenance again.As bigger quality problems occurring, after recovering, the cast of maintenance position generally also must be baked to the operation of to light a fire after certain intensity.
So the operational procedure of concrete construction body structure is loaded down with trivial details, the engineering time long, difficulty of construction increases, construction quality is difficult to control.
Summary of the invention
Technical problem to be solved by this invention provides a kind of efficient, practical heat insulation surface of industrial furnace fire-resistant abrasion-proof inner lining, comprises the drawing of body of wall, furnace roof, suspended block structure.It can effectively overcome the defective that in the past designs concrete and concrete construction at this position.Overhaul easy to usely, must not toast and to come into operation immediately, save the repair time, increase economic efficiency.
A kind of fire-resistant abrasion-proof inner lining structure for heat insulation surface of industrial furnace of the present invention, comprise heat-resisting bolt, heat-resisting plain cushion, heat-resisting nut and fire-resistant abrasion-proof brick, the prefabricated shaping of described fire-resistant abrasion-proof brick, in the fire-resistant abrasion-proof brick, vertically be provided with stepped through hole, insulated pouring material and ceramic fibre brick that industrial furnace body of wall or furnace roof are passed in the fastening end of heat-resisting bolt are welded on the steelframe of body of wall steel plate or furnace roof, heat-resisting bolt thread end passes the stepped through hole of abrasive brick and the heat-resisting plain cushion of packing into, and is locked with heat-resisting nut again.
The impetus end of described heat-resisting bolt is preferably L shaped, like this can more firm welding.
In order to prevent the heat leak at bolt place, can be in the inboard shutoff heat-preservation cotton of heat-resisting plain cushion, at heat-resisting nut outside shutoff plastic refractory plug.
The present invention replaces in the past the particularly adiabatic face fire-resistant abrasion-proof inner lining of CFB fluidized-bed combustion boiler of industrial furnace, comprises the new structure of body of wall, furnace roof.Be characterized in adopting heat-resisting bolting modular fire-resistant abrasion-proof brick structure.Because the fire-resistant abrasion-proof brick is the restriction that produce in factory is not subjected to construction condition, produce in factory is produced by batch in control easily qualitatively, and mass discrepancy is little.Site operation is convenient, and installation is simple, installation quality is controlled easily.Also bring great convenience for maintenance.
Description of drawings
Fig. 1 is a top structure schematic diagram of the present invention;
Fig. 2 is a wall construction schematic diagram of the present invention;
Fig. 3 is Fig. 2 A place partial enlarged drawing;
Fig. 4 is the integral construction schematic diagram.
The specific embodiment
As shown in Figure 1-Figure 3, at first lay ceramic fibre brick 7 on the main body supporting structure of the adiabatic face of industrial furnace body of wall or furnace roof and weld heat-resisting bolt 1 and re-lay fire-resistant abrasion-proof brick 4, then at inboard cast insulated pouring material 6, the present invention then mainly comprises heat-resisting bolt 1, heat-resisting plain cushion 2, heat-resisting nut 3 and abrasive brick 4, fire-resistant abrasion-proof brick 4 prefabricated shapings wherein, in fire-resistant abrasion-proof brick 4, vertically be provided with stepped through hole 5, heat-resisting bolt 1 fastening end is L shaped, it passes the insulated pouring material 6 and the ceramic fibre brick 7 of industrial furnace body of wall or furnace roof, be welded at last on the steelframe of body of wall or furnace roof, heat-resisting bolt 1 end of thread passes the stepped through hole 5 of abrasive brick 4 and the heat-resisting plain cushion 2 of packing into, and is locked with heat-resisting nut 3 again.In heat-resisting plain cushion 2 inboard shutoff heat-preservation cotton 8, at heat-resisting nut 3 outside shutoff plastic refractory plugs 9.
Fire-resistant abrasion-proof brick 4 of the present invention and sub-assembly thereof are a kind of molded articles, produce in factory, and the scene just installs and fixes, and has effectively improved the quality of adiabatic face fire-resistant abrasion-proof inner lining body of wall, top construction, and easy construction, and the duration is short.Also bringing for maintenance greatly facilitates simply.The maintenance position nut of only need back-outing is changed the structure of problem brick, and fastening nut gets final product with moldable shutoff bolt hole.Need not the baking maintenance finishes and can direct-fire play stove.
Construction procedure of the present invention is:
1, earlier heat-resisting bolt bolt is gone into the brick hole, the heat-resisting nut of screwing in advance, two nuts of top brick use wherein, the nut of screwing on earlier before the installation, integral installation finishes and adjusts second nut of screwing on after the flatness and get final product.Wall brick uses a nut to get final product.
2, with vertical or horizontal be that unit welds heat-resisting bolt and installs by row by each row.The front and rear row brick and the brick fissure of displacement are built by laying bricks or stones.Bonding between per 3 * 3 bricks with refractory mortar, be a little integral body with 3 * 3.Stay without the bonding conduct of clay between per 3 * 3 and 3 * 3 little integral body and establish dilatation joint 10.(Fig. 4)
3,, the real insulation material of plug is filled up in the space between brick and the stove steel construction get final product according to design insulation layer thickness size.
The present invention had once carried out secret test in July, 2008, subjects is a 1025tCFB fluidized-bed combustion boiler separator outlet flue, and the furnace wall of its exhaust pass and furnace roof are whole heat insulating construction, and construction area is bigger.This flue integral body of former design is watered material feeding cast for fire-resistant abrasion-proof, after use that integral body of the present invention is drawn, the suspended block structure instead.Construction period adopts the same type boiler of traditional structure to save 7 days on year-on-year basis.So far there is not any problem with beginning normal operation continuously the end of month.
Claims (3)
1, a kind of fire-resistant abrasion-proof inner lining structure for heat insulation surface of industrial furnace, it is characterized in that comprising heat-resisting bolt (1), heat-resisting plain cushion (2), heat-resisting nut (3) and fire-resistant abrasion-proof brick (4), the prefabricated shaping of described fire-resistant abrasion-proof brick (4), in fire-resistant abrasion-proof brick (4), vertically be provided with stepped through hole (5), insulated pouring material (6) and ceramic fibre brick (7) that industrial furnace body of wall or furnace roof are passed in the fastening end of heat-resisting bolt (1) are welded on the steelframe of body of wall steel plate or furnace roof, heat-resisting bolt (1) end of thread passes the stepped through hole of abrasive brick and the heat-resisting plain cushion of packing into, and is locked with heat-resisting nut again.
2, fire-resistant abrasion-proof inner lining structure for heat insulation surface of industrial furnace according to claim 1, the fastening end that it is characterized in that heat-resisting bolt (1) is L shaped.
3, fire-resistant abrasion-proof inner lining structure for heat insulation surface of industrial furnace according to claim 1 is characterized in that in the inboard shutoff heat-preservation cotton of heat-resisting plain cushion (2), at heat-resisting nut (3) outside shutoff plastic refractory plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100302087A CN101504250A (en) | 2009-03-19 | 2009-03-19 | Fire-resistant abrasion-proof inner lining structure for heat insulation surface of industrial furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2009100302087A CN101504250A (en) | 2009-03-19 | 2009-03-19 | Fire-resistant abrasion-proof inner lining structure for heat insulation surface of industrial furnace |
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| CN101504250A true CN101504250A (en) | 2009-08-12 |
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| CNA2009100302087A Pending CN101504250A (en) | 2009-03-19 | 2009-03-19 | Fire-resistant abrasion-proof inner lining structure for heat insulation surface of industrial furnace |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103512360A (en) * | 2012-06-20 | 2014-01-15 | 五冶集团上海有限公司 | Method for reserving large-area refractory castable construction expansion gaps |
| CN107246794A (en) * | 2017-07-18 | 2017-10-13 | 西安瑞泰建材科技有限公司 | Assembled tunnel cave |
| CN111365998A (en) * | 2019-12-05 | 2020-07-03 | 中铜华中铜业有限公司 | Stepping furnace formed refractory brick and using method thereof |
-
2009
- 2009-03-19 CN CNA2009100302087A patent/CN101504250A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103512360A (en) * | 2012-06-20 | 2014-01-15 | 五冶集团上海有限公司 | Method for reserving large-area refractory castable construction expansion gaps |
| CN107246794A (en) * | 2017-07-18 | 2017-10-13 | 西安瑞泰建材科技有限公司 | Assembled tunnel cave |
| CN107246794B (en) * | 2017-07-18 | 2023-06-09 | 西安瑞泰机械设备制造有限公司 | Assembled tunnel cave |
| CN111365998A (en) * | 2019-12-05 | 2020-07-03 | 中铜华中铜业有限公司 | Stepping furnace formed refractory brick and using method thereof |
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Open date: 20090812 |