CN204824765U - Durable coal gasification stove oven keeps warm - Google Patents
Durable coal gasification stove oven keeps warm Download PDFInfo
- Publication number
- CN204824765U CN204824765U CN201520429466.3U CN201520429466U CN204824765U CN 204824765 U CN204824765 U CN 204824765U CN 201520429466 U CN201520429466 U CN 201520429466U CN 204824765 U CN204824765 U CN 204824765U
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- Prior art keywords
- wear
- coal gasification
- furnace wall
- brick
- resistant liner
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- 239000003245 coal Substances 0.000 title claims abstract description 17
- 238000002309 gasification Methods 0.000 title claims abstract description 16
- 239000011449 brick Substances 0.000 claims abstract description 49
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 26
- 239000010959 steel Substances 0.000 claims abstract description 26
- 239000012774 insulation material Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 27
- 238000009413 insulation Methods 0.000 claims description 19
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 16
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 16
- 229910052863 mullite Inorganic materials 0.000 claims description 10
- 239000000835 fiber Substances 0.000 claims description 9
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims description 6
- 239000011810 insulating material Substances 0.000 claims description 5
- 230000003068 static effect Effects 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000012856 packing Methods 0.000 abstract description 2
- 230000003628 erosive effect Effects 0.000 abstract 1
- 238000004321 preservation Methods 0.000 abstract 1
- 230000003245 working effect Effects 0.000 description 7
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 230000035939 shock Effects 0.000 description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 101100230509 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) hat-1 gene Proteins 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 208000037656 Respiratory Sounds Diseases 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 230000008646 thermal stress Effects 0.000 description 3
- 229910000323 aluminium silicate Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 239000010980 sapphire Substances 0.000 description 2
- 229910052594 sapphire Inorganic materials 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000002844 continuous effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Landscapes
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The utility model provides a durable coal gasification stove oven keeps warm. Build the good refractory brick of one deck high temperature resistant performance by laying bricks or stones and as wear -resisting inside lining (4), between steel shell (1) and wear -resisting inside lining (4), from the inside lining support (2) that the rigid connection that directly makes progress has a plurality of to adopt high strength insulation material to make, support at adjacent two inside linings and being equipped with clearance (5) between (2) in steel shell (1), in clearance (5), pack the heat preservation packing (3) that useful low coefficient of heat conductivity light insulation material made. The beneficial effects of the utility model are that: under the working condition of the high pressure erosion -corrosion of high temperature, there is very long non -maintaining life the oven, with exterior temperature very low occasionally.
Description
Technical field
The utility model belongs to the coal gasification furnace protecting wall structure technical field being used for gasification of coal industry.
Technical background
The existing various coal gasification furnaces used, its common feature is that the non-maintaining work-ing life of furnace wall is short, and furnace wall surface temperature is high.Its major cause and furnace high-temperature high pressure, the harsh operating mode of deep-etching wearing and tearing is relevant, also relevant with the protecting wall structure used.At present, abroad the domestic furnace wall used mainly contains two kinds, and one is steel lining mould material structure, and another kind is steel lining (block) firebrick structure.
Steel lining mould material (comprise and first serve as a contrast insulated pouring material, then the serve as a contrast wear-resistant castable) subject matter that furnace wall exists is:
1, new bake oven does that difficulty is large, the time long, costly, hidden danger is many.Modern coal gasifier volume is large, and body of heater height can reach nearly 30 meters, and stove internal surface area reaches hundreds of square meter.Mould material layer thickness at least 200mm.It is almost impossible that the mould material of big area like this, high span all will strictly be dried by heating curve.The speed of each position heat-up rate is different, and the height of temperature is different, and when coming into operation, moisture content is different, and the thermal stresses produced is different.Different thermal stresses will produce many tiny cracks, and part tiny crack constantly expands under the continuous effect of in-furnace temperature and compression shock, finally comes off unavoidably.
2, steel the stove outer covering not only large and complex structure of volume, the overall mould material adhered to thereon inevitably produces crack because thermal stresses concentrates.The metallic substance such as the Stainless Steel Fibre in the mould material around crack, rivet clasp steel nail can raise and expand further by Yin Wendu, thus cracklin is constantly increased, wash away at furnace gas, under compression shock and the acting in conjunction of body of heater mechanical vibration force, mould material block finally comes off and falls down.Mould material comes off and will corresponding position steel casing temperature sharply be raised, and strengthens thermosteresis and outer steel shell corrosion.Bulk mould material also may block slag releasing channel, causes stopping production accident.
3, stove inner high voltage and compression shock also can make integrated poured inner lining of furnace crack.Especially all the more so when insulated pouring material insufficient strength inside furnace wall.(insulated pouring material intensity improves, and thermal conductivity just becomes large, and furnace wall external skin temperatures just and then raises) a large amount of crackle is the front topic that mould material block drops.
Also there are the following problems for steel lining firebrick structure:
1, selection of refractory is difficult! Selection high temperature abrasion resistance is good, resistance to rapid heat cycle, and has the silicon carbide brick of certain thermal radiation function to build liner by laying bricks or stones, stove surface temperature can be made too high because the thermal conductivity of silicon carbide is very good, not only cause a large amount of thermosteresis, also make the voltage endurance capability of furnace wall box hat reduce, corrosion is accelerated.If select other refractory materialss, again can because of the non-maintaining work-ing life of the cause influence furnace walls such as its high temperature abrasion resistance is bad, thermal expansivity is too large.
2, furnace wall quality weight, thermal capacity is large, body of heater intensification cooling difficulty.
3, big area brick structures unavoidably to crack, crack.There is no concavo-convex seam, likely make furnace wall box hat directly in the face of furnace high-temperature, thus harm furnace shell safety.
Summary of the invention
The purpose of this utility model is to provide a kind of major defect overcoming existing furnace wall and exist, can ensure under the prerequisite that furnace wall external skin temperatures is lower, furnace wall entirety has very long non-maintaining work-ing life, and cost is not higher than the durable coal gasification furnace furnace wall of insulation of existing furnace wall.
The purpose of this utility model is achieved through the following technical solutions:
The durable coal gasification furnace furnace wall of a kind of insulation has refractory brick that one deck wear resistance at elevated temperature is good as wear-resistant liner at steel casing inside lining building; Between steel casing and wear-resistant liner, being rigidly connected from radial direction, several adopt inner liner support of making of high-intensity heat insulating materials; Between adjacent two inner liner support, be provided with gap, in gap, be filled with the insulation made from low thermal conductivity light heat insulation material fill.
The utility model offers concavo-convex seam in order to four non-static fields bricklaying surfaces of building the refractory brick of wear-resistant liner by laying bricks or stones, and wherein adjacent two sides is convex seam, and corresponding another two sides is spill seam; The concavo-convex seam of adjacent wear-resistant liner brick of building by laying bricks or stones closely cooperates mutually.
The optimal selection of the utility model wear-resistant liner material is silicon carbide brick.
The optimal selection of the utility model inner liner support material is corundum-mullite.
The optimal selection of the utility model insulation packing material is aluminum silicate fiber.
The beneficial effects of the utility model are: the refractory materials (as silicon carbide etc.) that wear-resistant liner high temperature abrasion resistance is good, heat shakes good stability of furnace wall is made four sides and built by laying bricks or stones with the shaped brick of concavo-convex seam and form, Stability Analysis of Structures and good airproof performance, do not peel off, do not come off, wear-resistant, long service life, use middle Maintenance free; Inner liner support high-intensity heat insulating material (as corundum-mullite etc.) is made.Wear-resistant liner and steel casing being rigidly connected, guaranteeing that wear-resistant liner is constitutionally stable while, reduce the heat transmission from liner to box hat; Insulation filling low heat conduction light heat insulating material (as aluminum silicate fiber, sapphire whisker etc.) is made.Reduce the heat transmission from liner to box hat on the one hand, ensure that there is very low external skin temperatures furnace wall, the saturating burn simultaneously preventing the brickwork joint of wear-resistant liner (as dilatation joint etc.) possible and box hat; Alleviate weight and the thermal capacitance of furnace wall on the other hand.The coal gasification furnace furnace wall of design like this, not only have very long non-maintaining work-ing life, and stove external skin temperatures can fall too low.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is the A portion enlarged diagram of Fig. 1.
Embodiment
As shown in Fig. 1, Fig. 2, there is refractory brick that one deck wear resistance at elevated temperature is good the durable coal gasification furnace furnace wall of a kind of insulation as wear-resistant liner 4 at steel casing 1 inside lining building; Between steel casing 1 and wear-resistant liner 4, being rigidly connected from radial direction, several adopt inner liner support 2 of making of high-intensity heat insulating materials; Between adjacent two inner liner support 2, be provided with gap 5, in gap 5, be filled with the insulation made from low thermal conductivity light heat insulation material fill 3.The utility model offers concavo-convex seam in order to four non-static fields bricklaying surfaces of building the refractory brick of wear-resistant liner 4 by laying bricks or stones, and wherein adjacent two sides is convex seam 6, and corresponding another two sides is spill seam 7; The concavo-convex seam of adjacent wear-resistant liner brick of building by laying bricks or stones closely cooperates mutually.The optimal selection of wear-resistant liner 4 material is silicon carbide brick.The optimal selection of inner liner support 2 material is corundum-mullite.The optimal selection of insulation filling 3 material is aluminum silicate fiber.
The utility model coal gasification furnace furnace wall, its agent structure is made up of steel casing 1, inner liner support 2, insulation filling 3, wear-resistant liner 4 and gap 5.The common high temperature steel of steel casing 1, the in-furnace temperature of its thickness foundation vapourizing furnace and pressure selection.Inner liner support 2 selects corundum-mullite lagging material.Corundum-mullite product hot strength is large, and thermal conductivity is low, and heat is shaken good stability, can below 1600 DEG C applied at elevated temperature.The corundum-mullite product of different volumes density has different thermal conductivitys and compressive strength, and can select volume density and the thickness of inner liner support 2 according to the size of in-furnace temperature, pressure and wear-resistant liner brick, thickness is generally about 1/4th of liner tile width.The light heat insulation material that insulation filling 3 selects thermal conductivity low, the part by wear-resistant liner 4 selects high-temperature resistant aluminium oxide tapetum fibrosum etc., and the part by box hat 1 selects common pure aluminium silicate insulation blanket etc., according to the actual size field fabrication in gap 5.Wear-resistant liner 4 selects high-temperature wearable and resistance to rapid heat cycle, has again the carbofrax material of thermal radiation function.Concrete size and shape are specifically selected according to protecting wall structure shape and in-furnace temperature and pressure.The wear-resistant liner 4 of body of heater different sites selects the silicon carbide lining brick of different size and shape.The thickness of liner tile is typically chosen in about 1/4th of furnace wall thickness.Silicon carbide brick hot strength is large, and high temperature abrasion resistance is good, resistance to rapid heat cycle, has again good thermal radiation function, is desirable inner lining material, has very long non-maintaining work-ing life.There is the thinner silicon carbide brick of concavo-convex seam to build wall lining by laying bricks or stones with four bricklaying surfaces, make wall lining 4 have good structural stability and stopping property on the one hand.On the other hand, while guarantee compressive strength, weight and the thermal capacitance of furnace wall is alleviated.With the inner liner support 2 be made up of corundum-mullite by every block silicon carbide lining brick rigid support on box hat 1, further enhance the structural stability of wear-resistant liner 4, prevent stove inner high voltage and compression shock to produce silicon carbide lining to destroy, guarantee that inner lining with silicon carbide brick can not come off.Meanwhile, do not transmit again too many heat, affect the temperature of furnace wall surface.The insulation filling 3 refractory fiber blanket field fabrication of very low thermal conductivity, after being tamped in gap 5, can guarantee that furnace wall surface has lower surface temperature on the one hand, reduce heat-energy losses, ensure the compressive strength of box hat, reduce high temperature corrosion and heat-energy losses; On the other hand, the stopping property of wear-resistant liner 4 brickwork joint is further enhanced.Make both just at silicon carbide wear-resistant liner 4) brickwork joint when producing cracklin, furnace high-temperature also can not produce infringement to furnace wall box hat 1, thus guarantee that there are very long non-maintaining work-ing life and very low external skin temperatures in furnace wall.Meanwhile, very light quality further mitigates the total quality of furnace wall, reduces thermal capacitance, simplifies the baker process of new stove.
The present embodiment furnace wall internal diameter 2200mm, wall thickness 260mm, furnace pressure 0.6MPa, top temperature 1250 DEG C.Wherein steel casing 1 is Q245r, thickness 20mm.Wear-resistant liner 4 lining brick is silicon carbide material, and the corresponding 7.5 ° of central angles of every block radial brick, brick height 230mm, the thick 65mm of brick, brick is wide is inner side 138mm, outside 143mm.Matrix seam is R15mm, and convex is R14mm.Inner liner support 2 is density 1.2T/m
3corundum-mullite insulating brick, brick height 345mm, thick 65mm, the wide unification of brick is made as 230mm, when building by laying bricks or stones, according to the developed width on-site cutting between box hat 1 and liner 4.Gap 5 width is 156mm, and mean thickness is 180mm.Insulation filling 3 light heat insulation material field fabrication, the segment thickness by wear-resistant liner 4 is about 60mm alumina setter fiber and makes, and rest part aluminosilicate refractory fiber makes.
The utility model makes requirement and function is:
1) select high-temperature wearable and the good refractory materials of shaking property of heat, as silicon carbide etc., make wall lining.Ensure the hard wear resistant of wall lining, make again wall lining have good thermal radiation function simultaneously.
2) thickness of wear-resistant liner brick selects about 1/4th of furnace wall thickness, while guarantee wall lining using function, the weight of furnace wall lining brick is significantly alleviated, thus reduces the thermal capacity of furnace wall, reduce the consumption of silicon carbide brick costly.
3) four non-static fields bricklaying surfaces of wear-resistant liner brick are designed with concavo-convex seam, ensure that and use the wall lining of thinner wear-resistant liner brick masonry to have good structural stability, guarantee that liner tile can not come off and fall down.Meanwhile, make wall lining have better stopping property, both guaranteed that just crackle had appearred in brickwork joint, its steel casing also can not directly in the face of furnace high-temperature.
4) between furnace wall steel casing and wear-resistant liner, be rigidly connected with the about dry inner liner support be made up of high temperature resistant and that crushing strength under high temperature large, thermal conductivity is less lagging material (as corundum-mullite etc.).Ensure that the Stability Analysis of Structures of wear-resistant liner, liner lining brick can not get loose under the effect of stove inner high voltage and compression shock.Meanwhile, inner liner support thermal conductivity is little, also little with the contact area of outer steel shell, thus, little on the external skin temperatures impact of outer steel shell.
5) after every block wear-resistant liner brick, lay an inner liner support, make, between adjacent two inner liner support, have larger gap.Tamp with the insulation that the light heat insulation material (as aluminum silicate fiber, sapphire whisker etc.) very low by thermal conductivity is made in gap.On the one hand, insulation filling weight is light, thermal capacitance is little, alleviates weight and the thermal capacitance of furnace wall, not only makes body of heater heating, cooling convenient, also makes the baker work of new stove become very simple.On the other hand, very low thermal conductivity is filled in insulation, can guarantee that furnace wall box hat has very low external skin temperatures.
6) wear-resistant liner build brickwork joint by laying bricks or stones apart from outside the sealing of concavo-convex seam, its brickwork joint of more than 95% had necessarily elastic and heat-proof quality be well incubated filling seal, both just having there is crackle in this part brickwork joint, also can not damage the box hat inside it; By about 5% brickwork joint of inner liner support block, adopt the block method of the large size fissure of displacement, also can ensure that furnace high-temperature also can not injure steel casing both just when the brickwork joint of wear-resistant liner has fine cracks.Thus, the furnace wall of design like this has very long non-maintaining work-ing life and very low external skin temperatures.
Claims (5)
1. be incubated a durable coal gasification furnace furnace wall, it is characterized in that: have refractory brick that one deck wear resistance at elevated temperature is good as wear-resistant liner (4) at steel casing (1) inside lining building; Between steel casing (1) and wear-resistant liner (4), being rigidly connected from radial direction, several adopt inner liner support (2) of making of high-intensity heat insulating materials; Between adjacent two inner liner support (2), be provided with gap (5), in gap (5), be filled with the insulation made from low thermal conductivity light heat insulation material fill (3).
2. as claimed in claim 1 and one be incubated durable coal gasification furnace furnace wall, it is characterized in that: four non-static fields bricklaying surfaces in order to build the refractory brick of wear-resistant liner (4) by laying bricks or stones offer concavo-convex seam, wherein adjacent two sides is convex seam (6), and corresponding another two sides is spill seam (7); The concavo-convex seam of adjacent wear-resistant liner brick of building by laying bricks or stones closely cooperates mutually.
3. as claimed in claim 1 and one be incubated durable coal gasification furnace furnace wall, it is characterized in that: wear-resistant liner (4) material optimal selection is silicon carbide brick.
4. as claimed in claim 1 and one be incubated durable coal gasification furnace furnace wall, it is characterized in that: inner liner support (2) material optimal selection is corundum-mullite.
5. as claimed in claim 1 and one be incubated durable coal gasification furnace furnace wall, it is characterized in that: insulation fill (3) material optimal selection be aluminum silicate fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520429466.3U CN204824765U (en) | 2015-06-21 | 2015-06-21 | Durable coal gasification stove oven keeps warm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520429466.3U CN204824765U (en) | 2015-06-21 | 2015-06-21 | Durable coal gasification stove oven keeps warm |
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| Publication Number | Publication Date |
|---|---|
| CN204824765U true CN204824765U (en) | 2015-12-02 |
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|---|---|---|---|
| CN201520429466.3U Active CN204824765U (en) | 2015-06-21 | 2015-06-21 | Durable coal gasification stove oven keeps warm |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102296662B1 (en) * | 2021-06-21 | 2021-09-02 | 주식회사 우석이엔씨건축사사무소 | Reduction furnace for reducting gasification treatment of waste and reduction gasification treatment apparatus comprising the same |
-
2015
- 2015-06-21 CN CN201520429466.3U patent/CN204824765U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102296662B1 (en) * | 2021-06-21 | 2021-09-02 | 주식회사 우석이엔씨건축사사무소 | Reduction furnace for reducting gasification treatment of waste and reduction gasification treatment apparatus comprising the same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170508 Address after: 651500 Yunnan city of Kunming province Luquan Chongde Industrial Park Patentee after: Kunming Luquan Deli silicon carbide product Co., Ltd. Address before: 651700 Yunnan Province, Kunming city Luquan County Industrial Park Chong de force silicon carbide products Co. Ltd. Patentee before: Hu Guangxiong |
|
| TR01 | Transfer of patent right |