CN104101213A - Energy-saving heating furnace - Google Patents
Energy-saving heating furnace Download PDFInfo
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- CN104101213A CN104101213A CN201410355769.5A CN201410355769A CN104101213A CN 104101213 A CN104101213 A CN 104101213A CN 201410355769 A CN201410355769 A CN 201410355769A CN 104101213 A CN104101213 A CN 104101213A
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- infrared radiation
- high temperature
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- cermet
- temperature resistant
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Abstract
The invention provides an energy-saving heating furnace which is high in energy utilization rate and long in service life. The energy-saving heating furnace comprises a furnace body. A plurality of high-temperature-resistant infrared radiating boards are detachably mounted on the hearth inner wall of the furnace body. One side, facing the interior of a hearth, of each high-temperature-resistant infrared radiating board is provided with an infrared radiating layer. One side, facing the hearth wall, of each high-temperature-resistant infrared radiating board is provided with a thermal insulation layer. By the high-temperature-resistant infrared radiating boards which are provided with the thermal insulation layers at the backs and mounted on the hearth inner wall of the furnace, absorbed heat can be evenly radiated to workpieces, heat can be prevented from being transmitted to the furnace wall, energy is transmitted to the heating workpieces through radiation as much as possible, direction contact between flames and the surface of refractory materials of the furnace wall, the service life of the furnace is prolonged, economical benefits are increased, thermal shock damage caused by the fact the compact refractory materials are subjected to smoke quenching and thermal shock can be slowed down, quality requirements of the refractory materials can be lowered, and furnace constructing cost can be lowered.
Description
Technical field
The present invention relates to Industrial Stoves and Industrial Boiler, various high temperature kilns, heating furnace and Rebuild of Heat-treatment Annealing Furnace and boiler etc. that particularly the industry such as metallurgy, machinery, building materials, oil, electronics, semiconductor, electric power and chemical industry is used.
Background technology
China's Industrial Stoves and Industrial Boiler are the main bodys of energy resource consumption, and Industrial Stoves and the Industrial Boiler ubiquity thermal efficiency are low, the phenomenon that energy waste is larger.Low for Industrial Stoves and the ubiquitous effective utilization rate of energy of Industrial Boiler, the problem that energy waste is larger, general taked Main Energy-saving Measures is both at home and abroad: (1) adopts the light weight type insulation material of high insulating effect as far as possible; (2) adopt infrared ray energy-saving spray painting technology; (3) flue gas heat recovery; (4) black body radiation element power-saving technology.
Traditional approach is to adopt less light material and the insulation material brickwork of thermal capacitance, to reduce accumulation of heat and radiation loss.This power-economizing method, just " blocks up " heat in burner hearth, and the available heat of heated parts does not absorb, and does not change " diffuse reflection " state of heat ray, does not solve the problem whether heat ray puts in place, so the available heat of heated parts is still very low.People by heat Balance Calculation or test, find that resistance furnace body of heater accumulation of heat and radiation loss are up to 60%～70%, and the available heat of heated parts only 25%～30%.
Recuperative heater is the typical technology that utilizes flue gas waste heat recovery, and the thermal efficiency obtains raising by a relatively large margin; The application of infrared radiation coating subsequently, the available heat that has solved heated parts on the basis of high thermal effect absorbs problem, has further improved the thermal efficiency.
In Industrial Stoves burner hearth, conduct heat and have: the convection heat transfer' heat-transfer by convection of the product radiation of Fire Radiation, burning, the radiation of the furnace wall surface of solids and furnace gas radiation and furnace gas.In simple terms, participate in the 3 kinds of basic objects that have of the interior heat exchanging process of stove: furnace gas, furnace wall, heating and calcining thing.At 800 ℃, be that heat transfer between furnace gas and heating object mainly relies on convection heat transfer' heat-transfer by convection below; Between 800 ℃～1000 ℃, be to rely on convection current and radiation, when temperature, the heat conduction between furnace gas and heating object is main during higher than 1000 ℃ relies on infra-red radiation heat exchange simultaneously, and the heat 90% that heating object absorbs realizes by radiation heat transfer.Most of Industrial Stoves burner hearth is interior by refractory brick, castable refractory, and fire-resistant light insulating brick or ceramic fibre are built by laying bricks or stones.These refractory materials have fire resistance, under high temperature, intensity is high, the characteristics such as stability height can meet kiln needs, but the infrared emittance of these refractory materials generally in 0.35 left and right (as at 1100 ℃: chamotte brick: 0.35～0.65, mullite 0.4, aluminium oxide 0.18～0.52, refractory fibre 0.35), and the emissivity of infrared radiation coating is 0.85～0.95.Infrared radiation heat transfer is exactly the radianting capacity heating object that utilizes infrared ray uniqueness, object is heated, at a certain temperature, heating object gives off the infrared waves with certain penetration capacity, make heating object generation molecular oscillation, produce energy level transition, the infrared ray of the certain wave band of radiation, thus produce heat.Its feature one is heat absorption object thermally equivalent, the 2nd, and heat from inside to outside, thereby reduced the heat time, improve energy utilization rate.
The basic weakness of infrared coating technology is that coating is easily aging, and continuous efflorescence is in actual use dropped or by air-flow erosion, thermal infrared emissivity progressively decays, and loses infra red radiation function, and thermal effect is passed decline in time.
In addition, with thrust, increase burner hearth area in addition; For further improving the thermal efficiency, it is energy-conservation that someone proposes black matrix strengthening radiant heat transfer, developed corresponding black body radiation element, and it is distributed in kiln inwall.As explicitly pointing out the material by following weight percentage used, patent " a kind of black matrix material and the energy-conservation Radiation Cup (patent No.: CN 103288464 A) of being made by black matrix material " forms: carborundum 95%, di-iron trioxide 0.5%, manganese dioxide 0.5% and alundum (Al2O3) 4%, there is self coefficient of blackness high, thermal conductivity is good, and under the more than 900 ℃ condition of temperature, launch infrared ray electric magnetic wave in stove, in use can environment not produced and be polluted, environmental protection, energy-conservation, burner hearth programming rate is fast, and cheap.Point out simultaneously: current in black body radiation element power-saving technology black body radiation element what manufacture material selection is corundum-mullite, thermal conductivity factor 2.6W/m.K under 1000 ℃ of conditions, its blackness is to guarantee by surface spraying infra-red paint.In actual application, outside the position at black matrix place, or adopt spraying infrared coating to improve thermal effect, exist equally initial stage thermal effect high, in use procedure, along with infrared coating comes off, have thermal effect decay, this technology does not fully solve the problems such as energy absorption and infrared radiation coating are aging yet.
Summary of the invention
The object of the invention is to propose that a kind of energy utilization rate is high, the energy-saving heating furnace of long service life.
Energy-saving heating furnace of the present invention comprises body of heater, key is that the inboard wall of burner hearth of described body of heater is removably provided with some high temperature resistant infrared radiation panels, the one side of described high temperature resistant infrared radiation panel towards burner hearth inside is provided with infra-red radiation layer, and high temperature resistant infrared radiation panel is provided with thermal insulation layer towards the one side of hearth wall.
High temperature resistant infrared radiation panel at kiln inwall mounting strap back side band thermal insulation layer, its method phase total emissivity is 0.85～0.97, and adjusting angle as required, energy even is radiated on heating workpiece, also can stack design infra-red radiation plate structure and radian according to kiln type and heated parts simultaneously, the energy even absorbing is radiated on workpiece.The high temperature resistant infrared radiation panel back side has thermal insulation layer, can stop heat to pass to furnace wall, make energy as much as possible by radiation delivery to heating workpiece, its back temperature is compared low 300～500 ℃ with temperature in stove; High temperature resistant infrared radiation panel can reduce flame and directly contact furnace wall refractory surface, increases the service life, particularly fiber liner, can the chalk retardation time, simultaneously can solve airflow scouring damaged fiber liner equitemperature, significantly extend kiln service life, increase economic efficiency.And, high temperature resistant infrared radiation panel is installed on furnace wall and can be slowed down the thermal shock that compact refractory material causes by flue gas rapid heat cycle and damage, can reduce the quality requirement of refractory material, reduce brickwork cost.High temperature resistant infrared radiation panel adopts high temperature sintering preparation, has long service life, can reach 5～10 years, suitable with the projected life of Industrial Stoves and boiler, even higher; Infra-red radiation layer can adopt black matrix material or infra-red material preparation, also can be in surface spraying black matrix material and infrared coating preparation, pass through high temperature sintering, infrared radiation panel in actual use, infra-red radiation ability is unattenuated, guarantee for a long time the energy-efficient of heating furnace and boiler, synthesis energy saving efficiency reaches 15～30%, compared with the prior art has further and improves.
Further, described high temperature resistant infrared radiation panel utilizes the compound anchor nails of cermet to be fixed on inboard wall of burner hearth, and the compound anchor nails of described cermet is three-decker, and skin is earthenware, internal layer is metal or cermet, the fine and close castable of intermediate layer for internal layer is wrapped up completely.Traditional metal anchorage, because oxidation-resistance property is poor, cannot meet the long-time application under hot environment, and ceramic anchoring piece is because the fragility problem of ceramic material own cannot guarantee to hang security reliability; And the compound anchor nails of cermet in the present invention, its skin is highly heatproof and shockproof dense ceramic tube, 1100 ℃ of water-cooleds are greater than 30 times, internal layer is refractory metal or cermet, there is certain resistance to high temperature oxidation characteristic, centre is high temperature resistant fine and close castable, it is sealant, have high strength simultaneously, can be used as structural support layers and use, room temperature compressive resistance is greater than 120MPa, rupture strength reaches 20MPa, can prevent refractory metal part or cermet oxidation, the compound anchor nails of above-mentioned cermet has multiple protective action, guarantees to hang stable and long-life; In three layers, any individual layer or two-layer damage all can not have influence on suspension security reliability, only have three layers to be damaged simultaneously and just likely to have influence on suspension, have improved reliability.
Further, be the connective stability between each layer of reinforcement metal Ceramic Composite anchor nails, the skin of the compound anchor nails of described cermet has internal and external threads, and the internal layer of the compound anchor nails of cermet has external screw thread; Or the skin of the compound anchor nails of described cermet has external screw thread, and the internal layer of the compound anchor nails of cermet has external screw thread.
Further, described every high temperature resistant infrared radiation panel all utilizes five compound anchor nails of cermet to be fixed on inboard wall of burner hearth, wherein four compound anchor nails of cermet are distributed in four angles of high temperature resistant infrared radiation panel, and all the other compound anchor nails of cermet are positioned at the central authorities of high temperature resistant infrared radiation panel.Above-mentioned five compound anchor nails of cermet have formed the figure by four triangle splicings, and wherein the compound anchor nails of any two cermets is damaged and also can not affected the equal suspension safety of high temperature resistant infrared radiation panel.
Further, the thermal insulation layer of described high temperature resistant infrared radiation panel is ceramic fiber blanket, to improve heat-insulating capability and service life.
Further, on described high temperature resistant infrared radiation panel, there is hollow convex to go out cavity and/or fin, to absorb the energy in more flue gas, and this energy is reflected back to heating workpiece.
Further, described high temperature resistant infrared radiation panel material is by 90 ~ 95 parts of cordierites or mullite or carborundum or corundum-mullite, 5 ~ 10 parts of composite mixed high infrared radiation material phosphor composings; Described composite mixed high infrared radiation material powder is by Fe
2o
355 ~ 75 parts, 15 ~ 30 parts of NiO, 5 ~ 10 parts of ZnO, MnO
20.5 ~ 1.5 part, 0.5 ~ 2 part of CoO, Cr
2o
33 ~ 5 parts, CeO
20.05 ~ 0.2 part, Er
2o
30.05 ~ 0.2 part, Nd
2o
30.05 ~ 0.2 part, Yb
2o
30.05 ~ 0.2 part of composition, adopts blend to grind, fill after saggar high temperature sintering, then forms through broken ball milling.
Energy-saving heating furnace of the present invention is provided with dismountable high temperature resistant infrared radiation panel, installs and convenient disassembly, and long service life, fixing reliable, capacity usage ratio and the service life that can greatly improve stove, there is good promotional value.
Accompanying drawing explanation
Fig. 1 is the chamber structure schematic diagram of energy-saving heating furnace of the present invention.
Fig. 2, the 3rd, the mounting structure schematic diagram of high temperature resistant infrared radiation panel of the present invention.
Fig. 4 is the structural representation of the compound anchor nails of cermet of the present invention.
The specific embodiment
Contrast accompanying drawing below, by the description to embodiment, the specific embodiment of the present invention is described in further detail as the effect of the mutual alignment between the shape of each related member, structure, each several part and annexation, each several part and operation principle etc.
Embodiment 1:
As shown in the figure, the present embodiment energy-saving heating furnace comprises body of heater, the inboard wall of burner hearth 1 of body of heater is removably provided with some high temperature resistant infrared radiation panels 2, the one side of described high temperature resistant infrared radiation panel 2 towards burner hearth inside is provided with infra-red radiation layer 21, and high temperature resistant infrared radiation panel 2 is provided with thermal insulation layer 22 towards the one side of hearth wall; The normal direction of infra-red radiation layer 21 is over against the heated parts 3 in burner hearth.The thermal insulation layer 22 of high temperature resistant infrared radiation panel 2 is ceramic fiber blanket, and thickness is about 20～50mm.
Every high temperature resistant infrared radiation panel 2 all utilizes five compound anchor nails 4 of cermet to be fixed on inboard wall of burner hearth 1, wherein four compound anchor nails 4 of cermet are distributed in four angles of high temperature resistant infrared radiation panel 2, and the compound anchor nails 4 of all the other cermets is positioned at the central authorities of high temperature resistant infrared radiation panel 2.The compound anchor nails 4 of described cermet is three-decker, and outer 41 is earthenware, and internal layer 42 is metal or cermet, and intermediate layer 43 is the fine and close castable that internal layer 42 is wrapped up completely; The skin 41 of the compound anchor nails 4 of described cermet has internal and external threads, and the internal layer 42 of the compound anchor nails 4 of cermet has external screw thread.
On high temperature resistant infrared radiation panel 2, there is fin 5, to absorb the energy in more flue gas, and this energy is reflected back to heating workpiece.Certainly, the cavity that fin 5 also can protrude by hollow replaces, and plays same effect.
High temperature resistant infrared radiation panel material is by 90 ~ 95 parts of cordierites or mullite or carborundum or corundum-mullite, 5 ~ 10 parts of composite mixed high infrared radiation material phosphor composings; Described composite mixed high infrared radiation material powder is by Fe
2o
355 ~ 75 parts, 15 ~ 30 parts of NiO, 5 ~ 10 parts of ZnO, MnO
20.5 ~ 1.5 part, 0.5 ~ 2 part of CoO, Cr
2o
33 ~ 5 parts, CeO
20.05 ~ 0.2 part, Er
2o
30.05 ~ 0.2 part, Nd
2o
30.05 ~ 0.2 part, Yb
2o
30.05 ~ 0.2 part of composition, adopts blend to grind, fill after saggar high temperature sintering, then forms through broken ball milling.
Claims (7)
1. an energy-saving heating furnace, comprise body of heater, the inboard wall of burner hearth that it is characterized in that described body of heater is removably provided with some high temperature resistant infrared radiation panels, the one side of described high temperature resistant infrared radiation panel towards burner hearth inside is provided with infra-red radiation layer, and high temperature resistant infrared radiation panel is provided with thermal insulation layer towards the one side of hearth wall.
2. energy-saving heating furnace according to claim 1, it is characterized in that described high temperature resistant infrared radiation panel utilizes the compound anchor nails of cermet to be fixed on inboard wall of burner hearth, the compound anchor nails of described cermet is three-decker, skin is earthenware, internal layer is metal or cermet, the fine and close castable of intermediate layer for internal layer is wrapped up completely.
3. energy-saving heating furnace according to claim 2, is characterized in that the skin of the compound anchor nails of described cermet has internal and external threads, and the internal layer of the compound anchor nails of cermet has external screw thread; Or the skin of the compound anchor nails of described cermet has external screw thread, and the internal layer of the compound anchor nails of cermet has external screw thread.
4. according to the energy-saving heating furnace described in claim 2 or 3, it is characterized in that described every high temperature resistant infrared radiation panel all utilizes five compound anchor nails of cermet to be fixed on inboard wall of burner hearth, wherein four compound anchor nails of cermet are distributed in four angles of high temperature resistant infrared radiation panel, and all the other compound anchor nails of cermet are positioned at the central authorities of high temperature resistant infrared radiation panel.
5. energy-saving heating furnace according to claim 1, the thermal insulation layer that it is characterized in that described high temperature resistant infrared radiation panel is ceramic fiber blanket.
6. energy-saving heating furnace according to claim 1, is characterized in that having hollow convex to go out cavity and/or fin on described high temperature resistant infrared radiation panel.
7. energy-saving heating furnace according to claim 1, is characterized in that described high temperature resistant infrared radiation panel material is by 90 ~ 95 parts of cordierites or mullite or carborundum or corundum-mullite, 5 ~ 10 parts of composite mixed high infrared radiation material phosphor composings; Described composite mixed high infrared radiation material powder is by Fe
2o
355 ~ 75 parts, 15 ~ 30 parts of NiO, 5 ~ 10 parts of ZnO, MnO
20.5 ~ 1.5 part, 0.5 ~ 2 part of CoO, Cr
2o
33 ~ 5 parts, CeO
20.05 ~ 0.2 part, Er
2o
30.05 ~ 0.2 part, Nd
2o
30.05 ~ 0.2 part, Yb
2o
30.05 ~ 0.2 part of composition, adopts blend to grind, fill after saggar high temperature sintering, then forms through broken ball milling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410355769.5A CN104101213B (en) | 2014-07-24 | 2014-07-24 | energy-saving heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410355769.5A CN104101213B (en) | 2014-07-24 | 2014-07-24 | energy-saving heating furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104101213A true CN104101213A (en) | 2014-10-15 |
| CN104101213B CN104101213B (en) | 2016-01-13 |
Family
ID=51669576
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410355769.5A Expired - Fee Related CN104101213B (en) | 2014-07-24 | 2014-07-24 | energy-saving heating furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN104101213B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104080210A (en) * | 2014-08-07 | 2014-10-01 | 苏州罗卡节能科技有限公司 | High-temperature resistant infrared radiation plate |
| CN106051779A (en) * | 2016-07-25 | 2016-10-26 | 宜兴市中环耐火材料有限公司 | Mounting structure of anti-corrosion wear-resisting casing pipe |
| CN112179144A (en) * | 2020-09-30 | 2021-01-05 | 浙江西华节能技术有限公司 | Energy saving device and mounting method thereof |
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| US5017209A (en) * | 1988-05-19 | 1991-05-21 | Sumitomo Electric Industries, Ltd. | High temperature furnace with thermal insulation |
| CN2201644Y (en) * | 1994-07-30 | 1995-06-21 | 北京雷迪艾森新技术开发公司 | Photoelectric tube heating furnace |
| CN2299292Y (en) * | 1997-03-19 | 1998-12-02 | 葛世名 | Maintenance-free high infrared furnace wall reflecting appts. |
| CN201837236U (en) * | 2010-06-21 | 2011-05-18 | 徐其明 | Infrared heating furnace for aluminum profile die |
| CN202182628U (en) * | 2011-06-24 | 2012-04-04 | 北京中太投资管理有限公司 | Energy-saving furnace |
| CN203964672U (en) * | 2014-07-24 | 2014-11-26 | 苏州罗卡节能科技有限公司 | Energy-saving heating furnace |
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2014
- 2014-07-24 CN CN201410355769.5A patent/CN104101213B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5017209A (en) * | 1988-05-19 | 1991-05-21 | Sumitomo Electric Industries, Ltd. | High temperature furnace with thermal insulation |
| CN2201644Y (en) * | 1994-07-30 | 1995-06-21 | 北京雷迪艾森新技术开发公司 | Photoelectric tube heating furnace |
| CN2299292Y (en) * | 1997-03-19 | 1998-12-02 | 葛世名 | Maintenance-free high infrared furnace wall reflecting appts. |
| CN201837236U (en) * | 2010-06-21 | 2011-05-18 | 徐其明 | Infrared heating furnace for aluminum profile die |
| CN202182628U (en) * | 2011-06-24 | 2012-04-04 | 北京中太投资管理有限公司 | Energy-saving furnace |
| CN203964672U (en) * | 2014-07-24 | 2014-11-26 | 苏州罗卡节能科技有限公司 | Energy-saving heating furnace |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104080210A (en) * | 2014-08-07 | 2014-10-01 | 苏州罗卡节能科技有限公司 | High-temperature resistant infrared radiation plate |
| CN106051779A (en) * | 2016-07-25 | 2016-10-26 | 宜兴市中环耐火材料有限公司 | Mounting structure of anti-corrosion wear-resisting casing pipe |
| CN106051779B (en) * | 2016-07-25 | 2018-06-15 | 宜兴市中环耐火材料有限公司 | A kind of anticorrosion antiwear covers pipe mounting structure |
| CN112179144A (en) * | 2020-09-30 | 2021-01-05 | 浙江西华节能技术有限公司 | Energy saving device and mounting method thereof |
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| Publication number | Publication date |
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| CN104101213B (en) | 2016-01-13 |
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