CN110002722A - A method of improving glass furnace radiant heating efficiency - Google Patents
A method of improving glass furnace radiant heating efficiency Download PDFInfo
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- CN110002722A CN110002722A CN201711068007.7A CN201711068007A CN110002722A CN 110002722 A CN110002722 A CN 110002722A CN 201711068007 A CN201711068007 A CN 201711068007A CN 110002722 A CN110002722 A CN 110002722A
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- China
- Prior art keywords
- emissivity
- coating
- glass furnace
- heat
- heating efficiency
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Classifications
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/42—Details of construction of furnace walls, e.g. to prevent corrosion; Use of materials for furnace walls
- C03B5/43—Use of materials for furnace walls, e.g. fire-bricks
Abstract
High emissivity coating is coated by the big arch inner wall of glass furnace, improve the emission ratio in big arch inner surface heat face, the heat of radiation and convection current can be absorbed under the high temperature conditions, and wherein 85%~95% heat is radiate again, this partial heat radiateing can be absorbed by the lower heated object of temperature, since the heat of radiation is more likely to the lower glass metal of heating temperature, so the oxygen and nitrogen amount of participation reaction are few, the content for generating NOx is also reduced；Cohesive force between high emissivity energy-saving material coating and matrix is higher than the cohesive force between coating, therefore the material pull-out capacity after spraying is strong, is able to bear thermal shock impact, matrix surface can be completely covered by after spraying, without pinprick, it is in particularly suitable to be applied to corrode more serious position；This method not only increases the utilization rate of glass furnace radiant heat transfer, kiln furnace heat, also improves the melting efficiency of glass metal in operation, reduces the production quantity of harmful substance, has achieved the purpose that energy-saving consumption-reducing emission reduction.
Description
Technical field
The present invention relates to a kind of methods for improving glass furnace radiant heating efficiency, belong to field of glass production technology.
Background technique
Glass industries, which have become, accelerates the national economic development and indispensable a part of uplifting the people's living standard.It passes
The fusing glass technology of system is, in glass furnace, glass raw material is abundant by the thermal-flame radiations heat energy that burning generates
Fusing, the top fuel large contact area with air of Fuel lance, burning velocity is fast, and flame temperature is high, and the lower part of spray gun is fired
Material is then anoxic zone, lacks thermal-flame covering, this region is the region nearest from the glass raw material that needs melt, therefore must
The temperature that top flame space need be improved, makes thermal-flame be radiated metal level, to reach acceptable quality glass.But
Higher flame temperature also brings certain adverse effect: accelerating the reaction speed that nitrogen and oxygen in air generate NOx
Rate generates a large amount of NOx pernicious gas, and as air flue emission is into air, this traditional fusing glass technology not only disappears
A large amount of energy has been consumed, and has increased the concentration of NOx in flue gas, glass industry is all to seek new method current to solve
The technical problem faced.
Although all-oxygen combustion is an important pre-treatment means for solving the problems, such as NOx emission at present, no matter using sky
Gas separates legal system oxygen or omnibus control system, requires investment large number of equipment fund, and oxygen processed is at high cost, is unfavorable for total oxygen combustion
The promotion and application of burning technology；And SCR method is used to carry out the post-processing approach of desulphurization denitration, equally also it is faced with higher cost
Problem, and it is also possible to catalyst poisoning phenomenon occurs.
Other technical approach for carrying out Energy-saving in Industrial Furnaces transformation are: first is that changing furnace construction, increasing furnace face
Product, so that carrying out augmentation of heat transfer improves the thermal efficiency, but this renovation technique project amount is big, while increasing the power of kiln, consumption
More fuel；Another technology is to improve the emissivity of inner lining of kiln material, and this mode technology is single, not can increase biography
Heat area, and service life is short, energy-saving effect is not high；It is that refractory fibre is pasted on inner lining of kiln there are also a kind of mode, with
Radiation loss is reduced, but this method has only been retained in heat in burner hearth, along with the emissivity of refractory fibre is lower, no
The heat of preservation is radiated on heating object, and its emissivity is reduced with the raising of in-furnace temperature can again, therefore saved
It can less effective.Therefore the very big pass of insider is constantly subjected to for the research of the energy-saving drop pollution project of glass melter
Note.
Summary of the invention
A kind of raising glass furnace radiant heating efficiency provided the purpose of the present invention is to solve the above problem
Method: high emissivity coating is coated by the big arch inner wall of glass furnace, improves the emission ratio in big arch inner surface heat face, Neng Gou
The heat of radiation and convection current is absorbed under hot conditions, and wherein 85%~95% heat is radiate again, is radiate
This partial heat can be absorbed by the lower heated object, that is, glass metal of temperature, simultaneously because radiation heat be more likely to plus
The hot lower glass metal of temperature, the heat of original oxygen and nitrogen adsorption is few in flame space, so the amount for participating in reaction is few,
The content for generating NOx also reduces；Moreover, the cohesive force between high emissivity energy-saving material coating and matrix is higher than between coating
Cohesive force, therefore the material pull-out capacity after spraying is strong, is able to bear thermal shock impact, meanwhile, matrix table can be completely covered by after spraying
Face, no pinprick are in particularly suitable to be applied to corrode more serious position；In addition, this method not only increases glass furnace radiation
It conducts heat, the utilization rate of kiln furnace heat, also improves the melting efficiency of the glass metal in operation, and reduce harmful substance
Production quantity has achieved the purpose that energy-saving consumption-reducing emission reduction.
In order to achieve the above object, the present invention is realized by following technological means:
The present invention provides a kind of method for improving glass furnace radiant heating efficiency: in the big arch inner-wall spraying high emission of kiln
Rate material coating, the emissivity of the high-emissivity material are higher than the emissivity of breastwork and big arch inner wall basic refractory material.
The spraying coating uses high emissivity energy-saving material, with prior art preparation high emissivity energy-saving coatings
When, it is sufficiently mixed by the typical high emissivity substance of addition transition metal oxide etc. and other raw materials, through ball milling, ultra-fine
Change, nanosizing, has obtained having many advantages, such as the material that emissivity is high, fire resistance is good, strong to matrix adhesive force.
The high-emissivity material coating thickness is 0.01~0.2mm.
It is described before spraying high-emissivity material coating, matrix is carried out to the refractory material of kiln breastwork and big arch inner wall
Surface pretreatment.
The matrix surface pre-treatment, first has to the dirt using mechanical means removal matrix surface there are also oxide skin,
Then one layer of pretreatment liquid is coated on matrix, is allowed to wet and is impregnated with, be coated with high-emissivity material later, is sintered solid
Change.
Described needs to coat pretreatment liquid, which is to contain 0.1~30%wt waterglass and 0~10% wt
The aqueous solution of carboxymethyl cellulose or the aqueous solution of 0.1~30%wt PA80 glue, can be further improved high emissivity material
Expect the adhesive force between coating and matrix.
The need are sintered solidification, and the high-emissivity material of coating naturally dry at room temperature is sintered later
Solidification, as the heating curve of big arch silica brick heated up (containing Elevated Temperature Conditions), then 1200~1400 DEG C at a temperature of,
Natural Water, mixing water and/or the crystallization water in furnace are released in heat preservation 3~5 hours.
Working principle: when arch inner wall that high emissivity energy-saving material is big coated on glass furnace, the mechanism of action are as follows: spraying
Big arch inner wall emission ratio with higher after high emissivity energy-saving material, can absorb radiation and convection current under the high temperature conditions
Heat, and the cryogenic object that wherein 85~95% heat is radiated to again in kiln makes its absorption, so that heat
It is able to retain the melting efficiency of heat utilization efficiency and glass that glass melter is improved without being lost to outside furnace, glass furnace section
Energy reachable 6% or more, conservation of fuel about 8% or more.
The present invention mainly has the advantages that
1, the big arch inner wall of glass furnace coats high emissivity coating, improves the emission ratio in big arch inner surface heat face, can
The heat of radiation and convection current is absorbed under the high temperature conditions, and wherein 85%~95% heat is radiate again, is given off
This partial heat gone can be absorbed by the i.e. glass metal of the lower heated object of temperature, simultaneously because the heat of radiation is more likely to
The lower glass metal of heating temperature, the heat of original oxygen and nitrogen adsorption is few in flame space, so participate in the amount of reaction
Few, the content for generating NOx also reduces.
2, the cohesive force between high emissivity energy-saving material coating and matrix is higher than the cohesive force between coating, therefore sprays
Material pull-out capacity afterwards is strong, is able to bear thermal shock impact, meanwhile, matrix surface can be completely covered by after spraying, no pinprick is especially suitable
It closes to be applied to and corrodes more serious position.
3, this method not only increases the utilization rate of glass furnace radiant heat transfer, kiln furnace heat, also improves in operation
Glass metal melting efficiency, and reduce the production quantity of harmful substance, achieved the purpose that energy-saving consumption-reducing emission reduction.
Detailed description of the invention
Fig. 1 is that a kind of big arch inner-wall spraying of glass furnace of method for improving glass furnace radiant heating efficiency of the present invention is high
The schematic diagram of emissivity energy conservation coating.
Fig. 2 is a kind of spraying high emissivity energy-saving material for the method for improving glass furnace radiant heating efficiency of the present invention
Implementation steps schematic diagram.
Fig. 3 is a kind of big arch silica brick heating curve figure for the method for improving glass furnace radiant heating efficiency of the present invention.
Main element symbol description:
1 big arch
2 high-emissivity material coating
Below with reference to embodiment and Figure of description, the present invention is described in further detail, but not limited to this:
Specific embodiment
Embodiment 1
The present invention provides a kind of method for improving glass furnace radiant heating efficiency: high-incidence in big 1 inner-wall spraying of arch of kiln
Rate energy-saving material coating is penetrated, the emissivity of the high-emissivity material is higher than the hair of 1 inner wall basic refractory material of breastwork and big arch
Penetrate rate.
The spraying coating uses high emissivity energy-saving material, with prior art preparation high emissivity energy-saving coatings
When, it is sufficiently mixed by the typical high emissivity substance of addition transition metal oxide etc. and other raw materials, through ball milling, ultra-fine
Change, nanosizing, has obtained having many advantages, such as the material that emissivity is high, fire resistance is good, strong to matrix adhesive force.
The high-emissivity material coating thickness is 0.01~0.2mm.
It is described before spraying high-emissivity material coating, base is carried out to the refractory material of 1 inner wall of kiln breastwork and big arch
Body surface pretreatment.
The matrix surface pre-treatment, first has to the dirt using mechanical means removal matrix surface there are also oxide skin,
Then one layer of pretreatment liquid is coated on matrix, is allowed to wet and is impregnated with, be coated with high-emissivity material later, is sintered solid
Change.
Described needs to coat pretreatment liquid, which is to contain 0.1~30%wt waterglass and 0~10% wt
The aqueous solution of carboxymethyl cellulose or the aqueous solution of 0.1~30%wt PA80 glue, can be further improved high emissivity material
Expect the adhesive force between coating and matrix.
The need are sintered solidification, and the high-emissivity material of coating naturally dry at room temperature is sintered later
Solidification, as the heating curve of big 1 silica brick of arch heated up (containing Elevated Temperature Conditions), then 1200~1400 DEG C at a temperature of,
Natural Water, mixing water and/or the crystallization water in furnace are released in heat preservation 3~5 hours.
Applied to the glass furnace of day pull amount 500t/d, breastwork and 1 matrix of big arch are silica refractories, in glass furnace
The big 1 inner wall all surface even application a layer thickness of arch of furnace is the high-emissivity material of 0.2mm, high-emissivity material coating 2
Emissivity is higher than the emissivity of basis material, percentage shared by each solid constituent are as follows: Y2O39%, Cr2O39%, Co2O3
5%, ZrO212%, MnO 12%, SiC 19%, TiO210%, Al2O36%, Fe powder 15%, V2O53%, bonding used
The proportion of agent are as follows: carboxymethyl cellulose 4%, silica solution 96%, solid component 250kg and magnesium silicate 15kg mixing therein are equal
It after even, is uniformly mixed using ultra fine, ball grinds, gained powder and bonding agent 400kg, granularity is made 2.0nm's
High-emissivity material.
Before spraying high-emissivity material coating 2,1 inner wall matrix of the big arch of glass furnace is cleared up first, is then existed
Big 1 inner wall refractory material matrix surface of arch coats one layer of pretreatment liquid, and pretreatment liquid is to contain weight percent 20%PA80 glue
Aqueous solution, using rear glass furnace energy conservation up to 6% or more.
Embodiment 2
Applied to the glass furnace of day pull amount 300t/d, breastwork and 1 matrix of big arch are silica refractories, in glass furnace
The big 1 inner wall all surface even application a layer thickness of arch of furnace is the high-emissivity material of 0.1mm, high-emissivity material coating 2
Emissivity is higher than the emissivity of basis material, component are as follows: ZnAl2O4Powder 20%, MnAl2O4Powder 15%, BN 10%, B4C
5%, Fe2O33%, Y2O32%, adhesive 25%, yellow starch gum 0.5%, remaining is silica solution solvent, is sufficiently mixed obtained
High emissivity energy-saving coatings, wherein the first six kind substance is nanometer materials.
Before spraying high-emissivity material coating 2,1 inner wall matrix of the big arch of glass furnace is cleared up first, is then existed
Big 1 inner wall refractory material matrix surface of arch coats one layer of pretreatment liquid, and pretreatment liquid is to contain weight percent 15%PA80 glue
Aqueous solution, using rear glass furnace energy conservation up to 7% or more.
Embodiment 3
Applied to the glass furnace of day pull amount 150t/d, breastwork and 1 matrix of big arch are silica refractories, in glass furnace
The big 1 inner wall all surface even application a layer thickness of arch of furnace is the high-emissivity material of 0.15mm, high-emissivity material coating 2
Emissivity is higher than the emissivity of basis material, and high emissivity energy-saving material is widelyd popularize using HWI company, the U.S.
Emisshield coating directly buys the finished product of its company for testing.
Before spraying high-emissivity material coating 2,1 inner wall matrix of the big arch of glass furnace is cleared up first, is then existed
Big 1 inner wall refractory material matrix surface of arch coats one layer of pretreatment liquid, and pretreatment liquid is to contain 10% waterglass of weight percent
With the aqueous solution of 1% carboxymethyl cellulose, using rear glass furnace energy conservation up to 8% or more.
It should be understood that the above description is only a preferred embodiment of the present invention, implementation of the invention cannot be once limited
Range.Therefore, any modification, equivalent substitution, improvement and etc. done within the spirit and principles of the present invention, should be included in
Within protection scope of the present invention.
Claims (7)
1. a kind of method for improving glass furnace radiant heating efficiency, it is characterized in that: in the big arch of kiln (1) inner-wall spraying high emission
Rate material coating (2), the emissivity of the high-emissivity material are higher than the transmitting of breastwork and big arch (1) inner wall basic refractory material
Rate.
2. a kind of method for improving glass furnace radiant heating efficiency according to claim 1, it is characterized in that: spraying coating
Using high emissivity energy-saving material, when with prior art preparation high emissivity energy-saving coatings, by adding transiting metal oxidation
The typical high emissivity substance such as object and other raw materials are sufficiently mixed, and through ball milling, fine, nanosizing, have obtained having transmitting
The material for the advantages that rate is high, fire resistance is good, strong to matrix adhesive force.
3. a kind of method for improving glass furnace radiant heating efficiency according to claim 1, it is characterized in that: high emissivity
Material coating (2) is with a thickness of 0.01~0.2mm.
4. a kind of method for improving glass furnace radiant heating efficiency according to claim 1, it is characterized in that: high in spraying
Before emissivity material coating (2), matrix surface pre-treatment is carried out to the refractory material of kiln breastwork and big arch (1) inner wall.
5. a kind of method for improving glass furnace radiant heating efficiency according to claim 4, it is characterized in that: matrix surface
Pre-treatment, first having to the dirt for using mechanical means to remove matrix surface, there are also oxide skins, before then coating one layer on matrix
Treatment fluid is allowed to wet and is impregnated with, is coated with high-emissivity material later, is sintered solidification.
6. a kind of method for improving glass furnace radiant heating efficiency according to claim 5, it is characterized in that: needing to coat
Pretreatment liquid, the pretreatment liquid are the aqueous solution containing 0.1~30%wt waterglass and 0~10%wt carboxymethyl cellulose, or
The aqueous solution of person's 0.1~30%wt PA80 glue can be further improved attached between high-emissivity material coating (2) and matrix
Put forth effort.
7. a kind of method for improving glass furnace radiant heating efficiency according to claim 5, it is characterized in that: need to be burnt
Knot solidification, the high-emissivity material of coating naturally dry at room temperature are sintered solidification, with big arch (1) silica brick later
Heating curve is heated up (containing Elevated Temperature Conditions), then 1200~1400 DEG C at a temperature of, keep the temperature 3~5 hours, release in furnace
Natural Water, mixing water and/or the crystallization water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711068007.7A CN110002722A (en) | 2018-01-04 | 2018-01-04 | A method of improving glass furnace radiant heating efficiency |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711068007.7A CN110002722A (en) | 2018-01-04 | 2018-01-04 | A method of improving glass furnace radiant heating efficiency |
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| CN110002722A true CN110002722A (en) | 2019-07-12 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101551213A (en) * | 2009-04-30 | 2009-10-07 | 山东慧敏科技开发有限公司 | Method for improving thermal conducting efficiency of coke oven combustion chamber |
| CN103553549A (en) * | 2013-10-31 | 2014-02-05 | 汤炼芳 | Heat-radiation coating material for ceramic kiln |
| CN103555013A (en) * | 2013-10-31 | 2014-02-05 | 汤炼芳 | High-emissivity ceramic coating material |
| CN103589201A (en) * | 2013-11-20 | 2014-02-19 | 北京恩吉赛威节能科技有限公司 | High-emissivity infrared energy-saving radiation paint and preparation method thereof |
| CN104098936A (en) * | 2014-07-17 | 2014-10-15 | 张军 | Preparation method of high-emissivity energy-saving infrared radiation coating |
-
2018
- 2018-01-04 CN CN201711068007.7A patent/CN110002722A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101551213A (en) * | 2009-04-30 | 2009-10-07 | 山东慧敏科技开发有限公司 | Method for improving thermal conducting efficiency of coke oven combustion chamber |
| CN103553549A (en) * | 2013-10-31 | 2014-02-05 | 汤炼芳 | Heat-radiation coating material for ceramic kiln |
| CN103555013A (en) * | 2013-10-31 | 2014-02-05 | 汤炼芳 | High-emissivity ceramic coating material |
| CN103589201A (en) * | 2013-11-20 | 2014-02-19 | 北京恩吉赛威节能科技有限公司 | High-emissivity infrared energy-saving radiation paint and preparation method thereof |
| CN104098936A (en) * | 2014-07-17 | 2014-10-15 | 张军 | Preparation method of high-emissivity energy-saving infrared radiation coating |
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