CN108489265A - A kind of pure oxygen combustion technology and all-oxygen combustion melting furnace of rock wool production - Google Patents

A kind of pure oxygen combustion technology and all-oxygen combustion melting furnace of rock wool production Download PDF

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Publication number
CN108489265A
CN108489265A CN201810195923.5A CN201810195923A CN108489265A CN 108489265 A CN108489265 A CN 108489265A CN 201810195923 A CN201810195923 A CN 201810195923A CN 108489265 A CN108489265 A CN 108489265A
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CN
China
Prior art keywords
melting furnace
pure oxygen
oxygen combustion
natural gas
furnace
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CN201810195923.5A
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Chinese (zh)
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郁平
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Individual
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Individual
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Priority to CN201810195923.5A priority Critical patent/CN108489265A/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B14/00Crucible or pot furnaces
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B14/00Crucible or pot furnaces
    • F27B14/08Details peculiar to crucible or pot furnaces
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B14/00Crucible or pot furnaces
    • F27B14/08Details peculiar to crucible or pot furnaces
    • F27B14/14Arrangements of heating devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B14/00Crucible or pot furnaces
    • F27B14/08Details peculiar to crucible or pot furnaces
    • F27B14/20Arrangement of controlling, monitoring, alarm or like devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00Subject matter not provided for in other groups of this subclass
    • F27D99/0001Heating elements or systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B14/00Crucible or pot furnaces
    • F27B2014/002Smelting process, e.g. sequences to melt a specific material
    • F27B2014/004Process involving a smelting step, e.g. vaporisation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B14/00Crucible or pot furnaces
    • F27B14/08Details peculiar to crucible or pot furnaces
    • F27B2014/0837Cooling arrangements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27MINDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
    • F27M2003/00Type of treatment of the charge
    • F27M2003/13Smelting
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/10Reduction of greenhouse gas [GHG] emissions
    • Y02P10/143Reduction of greenhouse gas [GHG] emissions of methane [CH4]

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gasification And Melting Of Waste (AREA)

Abstract

The invention discloses a kind of pure oxygen combustion technologies of rock wool production, including following steps:1)Raw material basalt and dolomite are added into all-oxygen combustion melting furnace;2)Natural gas and pure oxygen are passed through into melting furnace from the air inlet of melting furnace;3)Natural gas in melting furnace is lighted, natural gas is controlled and pure oxygen enters the flow in stove, heating fusing is carried out to raw material, fusion temperature is up to 2,600 2800 DEG C.The pure oxygen combustion technology, as fuel, avoids environmental pollution, improves fusion temperature, that is, realize energy-saving and environment-friendly purpose, and improve the quality of the rock wool of production with natural gas and pure oxygen.The invention also discloses a kind of all-oxygen combustion melting furnaces, traditional furnace wall jacket type structure is changed to duct type structure, the cooling water being passed through in pipeline is heated at high temperature in melting furnace generates high steam, to cool down to furnace wall, the melting furnace is simple in structure, has saved energy, production cost is reduced, environmental pollution is reduced, realizes energy-saving and environment-friendly purpose.

Description

A kind of pure oxygen combustion technology and all-oxygen combustion melting furnace of rock wool production
Technical field
The present invention relates to technical field of rock wool production, and in particular to a kind of pure oxygen combustion technology of rock wool production and total oxygen combustion Burn melting furnace.
Background technology
Rock wool is a kind of common heat preserving and insulating material, is passed through using raw material such as basalt, coke, dolomite and slags Melt, centrifuge makes its fibrosis form rock cotton board or other products into further processing excessively again.With national economy Development is implemented with national energy-saving policy, and building and the heat-insulated demand with rock mineral wool product of industrial heat preservation are increasing, but state The interior existing melting furnace for the production of rock mineral wool is mostly with coke as main fuel, this kind of coke combustion method is producing There is the discharge of sulfur and nitrogen oxides in the process, environmental pollution is more serious, and top setting flue gas processing device is still not The harmful substance in flue gas can be more completely disposed, health can be seriously endangered in these discharge of poisonous waste to air. In addition, it is relatively low using coke combustion method fusion temperature, it needs that slag additionally is added in the raw material of production rock wool to improve fusing Temperature reduces so as to cause the acidity coefficient of rock wool, and the shot content generated in production process is higher, reduces the matter of rock wool Amount, and coke combustion method energy consumption is higher, heat utilization rate is relatively low, has violated energy-saving and environment-friendly production requirement.
Invention content
In view of the above-mentioned problems, the object of the present invention is to provide a kind of pure oxygen combustion technology of rock wool production and all-oxygen combustion are molten Change stove, which, as fuel, avoids environmental pollution, improve fusion temperature, i.e., with natural gas and pure oxygen Energy-saving and environment-friendly purpose is realized, and improves the quality of the rock wool of production.
To achieve the above object, the present invention adopts the following technical scheme that:
A kind of pure oxygen combustion technology of rock wool production, including following steps:1)Former material is added into all-oxygen combustion melting furnace Expect basalt and dolomite;2)Natural gas and pure oxygen are passed through into melting furnace from the air inlet of melting furnace;3)It lights in melting furnace Natural gas, controls natural gas and pure oxygen enters the flow in stove, carries out heating fusing to raw material, fusion temperature reaches 2600- 2800℃。
The weight percent of the basalt and dolomite is(75%-85%):(15%-25%).
The ratio of the natural gas and pure oxygen flow is 1:(2-2.5).
A kind of all-oxygen combustion melting furnace used in pure oxygen combustion technology, including fusing furnace body, the melting furnace sheet Body is cylindrical structure, and the furnace wall of melting furnace includes inner and outer wall, is equipped with and melting furnace cylinder direction between inner and outer wall Parallel pipeline, the duct bottom are equipped with annular water tank, and annular water tank is looped around in melting furnace bottom interior wall, are set at the top of pipeline There are pipe, pipe to be looped around in melting furnace top inner wall, duct bottom is connected with annular water tank, is connected with pipe at the top of pipeline Logical, the annular water tank is equipped with water inlet, and pipe is equipped with steam (vapor) outlet;Feed inlet, fusing are equipped at the top of the melting furnace Stove side bottom is equipped with air inlet, and air inlet lower end is equipped with discharge port, and fusing furnace bottom is equipped with incubation cavity, and incubation cavity top is stream Body layer, the fluid layer are communicated with discharge port, and fluid layer is equipped with combustion chamber, and combustion chamber top is equipped with partition board, and partition board top is Storage compartment.
The air inlet includes at least four, and annular is uniformly distributed the surrounding with fusing furnace bottom.
The pipeline includes at least eight, and circular array formula is uniformly distributed interlayer cavity between the inner walls and the outer It is interior.
The air inlet includes center air port and outer air port, and center air port connects natural gas channel, and outer air port connects pure oxygen Channel.
The natural gas channel is equipped with natural gas flow control valve, and pure oxygen channel is equipped with oxygen flux control valve, melts Change and is equipped with temperature sensor, the natural gas flow control valve, oxygen flux control valve and temperature sensor and control in stove System is electrically connected.
The furnace wall of the melting furnace is equipped with watch window.
Compared with prior art, the present invention the present invention uses completely new pure oxygen combustion technology, natural gas and pure oxygen mixing are made It for green clean fuel, burns hair compared to traditional coke, when burning only generates carbon dioxide and vapor, no oxysulfide With the discharge of the pollutants such as nitrogen oxides, and by the pure oxygen combustion technology technique, fusion temperature may be up to 2600-2800 DEG C, improve fusion temperature it is not necessary that slag is added, improve rock wool at fine rate and production yields, and the rock wool acidity produced Coefficient is improved, and the quality of rock wool is preferable, has been more than largely national standard, while using pure oxygen combustion technology compared with day Right gas and air combined burning technical gas flow reduce, and flows decrease avoids the phenomenon that excessive nitrogen takes away thermal energy, carries Heat utilization rate in high stove.
In addition, all-oxygen combustion melting furnace in the present invention used in pure oxygen combustion technology is by the jacket type of traditional furnace wall Structure is improved to duct type structure, and the cooling water being passed through in pipeline is heated at high temperature in melting furnace generates high steam, to right Furnace wall cools down, and avoids after folder jacket temperature increases and is passed through in cooling tower after cooling in the technique for being passed through melting furnace Step, has simplified technical process, at the same high steam be discharged out of melting furnace after can be converted into electric energy, kinetic energy, thermal energy etc., fill Divide the recycling for having accomplished energy, avoids the wasting of resources, saved production cost, improve the comprehensive of rock wool production process Close economic benefit.
Description of the drawings
Fig. 1 is the structural diagram of the present invention;
Fig. 2 is the schematic diagram along Section A-A in Fig. 1;
Fig. 3 is the distribution schematic diagram of pipeline and pipe in the present invention.
Specific implementation mode
To make those skilled in the art more fully understand the present invention, the present invention is done With reference to embodiment It further illustrates:
A kind of pure oxygen combustion technology of rock wool production, including following steps:1)Former material is added into all-oxygen combustion melting furnace Expect basalt and dolomite;2)Natural gas and pure oxygen are passed through into melting furnace from the air inlet of melting furnace;3)It lights in melting furnace Natural gas, controls natural gas and pure oxygen enters the flow in stove, carries out heating fusing to raw material, fusion temperature reaches 2600- 2800℃。
The weight percent of the basalt and dolomite is(75%-85%):(15%-25%).
The ratio of the natural gas and pure oxygen flow is 1:(2-2.5).
As shown in Figure 1 to Figure 3, the all-oxygen combustion melting furnace used in a kind of pure oxygen combustion technology, including melting furnace sheet Body 1, the fusing furnace body 1 are cylindrical structure, and the furnace wall for melting furnace body includes inner wall 2 and outer wall 3, inner wall 2 and outer wall 3 Between be equipped with the pipeline 15 parallel with melting furnace cylinder direction, 15 bottom of the pipeline be equipped with annular water tank 17, annular water tank 17 It is looped around in melting furnace bottom interior wall, 15 top of pipeline is equipped with pipe 16, and pipe 16 is looped around in melting furnace top inner wall, pipeline 15 bottoms are connected with annular water tank 17, and 15 top of pipeline is connected with pipe 16, and the annular water tank 17 is equipped with water inlet, Pipe is equipped with steam (vapor) outlet;Feed inlet 4 is equipped at the top of the melting furnace, melting furnace side bottom is equipped with air inlet, air inlet Lower end is equipped with discharge port 10, and the bottom of melting furnace is equipped with incubation cavity 12, and 12 top of incubation cavity is fluid layer 11, the fluid layer 11 It is communicated with discharge port 10, fluid layer 11 is equipped with combustion chamber 13, and 13 top of combustion chamber is equipped with partition board 14, and 14 top of partition board is storing Room.
The air inlet includes at least four, and annular is uniformly distributed the surrounding with fusing furnace bottom.From fusing furnace bottom four Week is uniformly passed through burning gases into melting furnace, it is ensured that the burning indoor temperature uniformity of melting furnace, and then to raw material It is evenly heated.
The pipeline 15 includes at least eight, and circular array formula is uniformly distributed interlayer cavity between the inner walls and the outer It is interior.The wall thickness of pipeline can be according to the different Rational choices for actually bearing steam pressure.By pipeline be uniformly distributed in inner wall with Between outer wall, can uniformly cool down to melting furnace, ensure furnace wall temperature uniformity, avoid the occurrence of local cooling it is uneven and Make furnace wall be heated excessively high damage the phenomenon that.
The air inlet includes center air port 8 and outer air port 6, and center air port 8 connects natural gas channel 9, and outer air port 6 connects Pure oxygen channel 7.Two air ports of setting each lead into natural gas and oxygen, and natural gas and pure oxygen is made to be tied after reaching melting furnace Combination burning avoids mixedly appearing the danger such as explosion in advance.
The natural gas channel is equipped with natural gas flow control valve, and pure oxygen channel is equipped with oxygen flux control valve, melts Change and is equipped with temperature sensor, the natural gas flow control valve, oxygen flux control valve and temperature sensor and control in stove System is electrically connected.The gas flow of natural gas and pure oxygen is reasonably controlled by control system to ensure that natural gas fires completely in stove It burns while ensureing in-furnace temperature, make fusion temperature up to 2700 DEG C or so, ensure higher at fine rate.
The furnace wall of the melting furnace is equipped with watch window 5, and the combustion case inside melting furnace is observed convenient for staff.
The present invention all-oxygen combustion melting furnace when in use, raw material is conveyed into from feed inlet in melting furnace first, bottom into It is passed through natural gas at air port and raw material is heated in pure oxygen gas burning, is allowed to melt, the fluid after fusing is arranged from discharge port Entering next production stage after going out, the cooling procedure of melting furnace furnace wall is to be passed through cooling water from the annular water tank water inlet of bottom, Cooling water is flowed up along each pipeline, and during flowing up, cooling water forms steam by heating evaporation, then from pipeline The pipe gas outlet at top is transported to steam turbine, and then steam energy is carried out conversion and is used as follow-up, saved the energy with And production cost, improve whole economic efficiency.

Claims (9)

1. a kind of pure oxygen combustion technology of rock wool production, it is characterised in that:Including following steps:1)It is melted to all-oxygen combustion Raw material basalt and dolomite are added in stove;2)Natural gas and pure oxygen are passed through into melting furnace from the air inlet of melting furnace;3) Natural gas in melting furnace is lighted, natural gas is controlled and pure oxygen enters the flow in stove, heating fusing, fusing temperature are carried out to raw material Degree reaches 2600-2800 DEG C.
2. the pure oxygen combustion technology of rock wool production according to claim 1, it is characterised in that:The basalt and dolomite Weight percent be(75%-85%):(15%-25%).
3. the pure oxygen combustion technology of rock wool production according to claim 2, it is characterised in that:The natural gas and pure oxygen Flow proportional is 1:(2-2.5).
4. the all-oxygen combustion melting furnace used in a kind of pure oxygen combustion technology according to any one of claims 1 to 3, It is characterized in that:Including melting furnace body, the fusing furnace body is cylindrical structure, the furnace wall for melting furnace body include inner wall with Outer wall, the pipeline parallel with melting furnace cylinder direction is equipped between inner and outer wall, and the duct bottom is equipped with annular water tank, ring Shape water tank is looped around in melting furnace bottom interior wall, and pipe is equipped at the top of pipeline, and pipe is looped around in melting furnace top inner wall, pipeline Bottom is connected with annular water tank, is connected with pipe at the top of pipeline, and the annular water tank is equipped with water inlet, and pipe is equipped with Steam (vapor) outlet;Feed inlet is equipped at the top of the melting furnace, melting furnace side bottom is equipped with air inlet, and air inlet lower end is equipped with discharging Mouthful, the bottom of the fusing furnace body is equipped with incubation cavity, and incubation cavity top is fluid layer, and the fluid layer is communicated with discharge port, Fluid layer is equipped with combustion chamber, and combustion chamber top is equipped with partition board, and partition board top is storage compartment.
5. all-oxygen combustion melting furnace according to claim 4, it is characterised in that:The air inlet includes at least four, ring Shape is uniformly distributed the surrounding with fusing furnace bottom.
6. all-oxygen combustion melting furnace according to claim 5, it is characterised in that:The pipeline includes at least eight, is in ring Shape array is uniformly distributed in interlayer cavity between the inner walls and the outer.
7. all-oxygen combustion melting furnace according to claim 6, it is characterised in that:The air inlet includes center air port and outer Air port, center air port connect natural gas channel, outer air port connection pure oxygen channel.
8. all-oxygen combustion melting furnace according to claim 7, it is characterised in that:The natural gas channel is equipped with natural gas Flow control valve, pure oxygen channel are equipped with oxygen flux control valve, temperature sensor, the gas discharge are equipped in melting furnace Control valve, oxygen flux control valve and temperature sensor are electrically connected with control system.
9. all-oxygen combustion melting furnace according to claim 8, it is characterised in that:The furnace wall of the melting furnace is equipped with observation Window.
CN201810195923.5A 2018-03-09 2018-03-09 A kind of pure oxygen combustion technology and all-oxygen combustion melting furnace of rock wool production Pending CN108489265A (en)

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CN201810195923.5A CN108489265A (en) 2018-03-09 2018-03-09 A kind of pure oxygen combustion technology and all-oxygen combustion melting furnace of rock wool production

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CN201810195923.5A CN108489265A (en) 2018-03-09 2018-03-09 A kind of pure oxygen combustion technology and all-oxygen combustion melting furnace of rock wool production

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB710031A (en) * 1952-04-17 1954-06-02 John Harper & Company Ltd Shaft furnaces
JP2003227687A (en) * 2002-02-05 2003-08-15 Daido Steel Co Ltd Metal melter
US20090293548A1 (en) * 2008-03-13 2009-12-03 Thomas Niehoff Device and method for preparing siliceous melts
CN101913795A (en) * 2010-07-09 2010-12-15 南京恒翔保温材料制造有限公司 Method for preparing energy-saving heat insulation material of rock wool fibers
CN103562148A (en) * 2011-03-25 2014-02-05 梅塞尔匈牙利天然气有限责任公司 Melting device
CN104692648A (en) * 2015-03-03 2015-06-10 泰石岩棉有限公司 Method and system for producing rock wool by comprehensively utilizing solid wastes
CN105130166A (en) * 2015-09-18 2015-12-09 中材科技股份有限公司 Pure oxygen combustion system for rock wool melt temperature multi-point accuracy control

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB710031A (en) * 1952-04-17 1954-06-02 John Harper & Company Ltd Shaft furnaces
JP2003227687A (en) * 2002-02-05 2003-08-15 Daido Steel Co Ltd Metal melter
US20090293548A1 (en) * 2008-03-13 2009-12-03 Thomas Niehoff Device and method for preparing siliceous melts
CN101913795A (en) * 2010-07-09 2010-12-15 南京恒翔保温材料制造有限公司 Method for preparing energy-saving heat insulation material of rock wool fibers
CN103562148A (en) * 2011-03-25 2014-02-05 梅塞尔匈牙利天然气有限责任公司 Melting device
CN104692648A (en) * 2015-03-03 2015-06-10 泰石岩棉有限公司 Method and system for producing rock wool by comprehensively utilizing solid wastes
CN105130166A (en) * 2015-09-18 2015-12-09 中材科技股份有限公司 Pure oxygen combustion system for rock wool melt temperature multi-point accuracy control

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
张耀明等: "《玻璃纤维与矿物棉全书》", 化学工业出版社, pages: 638 *

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