CN103880268A - Glass melting furnace employing microwave combined heating and microwave defoaming - Google Patents
Glass melting furnace employing microwave combined heating and microwave defoaming Download PDFInfo
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- CN103880268A CN103880268A CN201210552723.3A CN201210552723A CN103880268A CN 103880268 A CN103880268 A CN 103880268A CN 201210552723 A CN201210552723 A CN 201210552723A CN 103880268 A CN103880268 A CN 103880268A
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Abstract
The invention relates to a glass melting furnace employing fuel gas, fuel oil, electricity and microwave combined energy heating (simply named microwave combined heating) and microwave defoaming, wherein the combined energy comprises energy coming from. The melting furnace consists of a furnace bottom, a furnace top and a peripheral side wall, wherein a microwave generating device is arranged on the furnace top or any position of the furnace and is used for introducing microwaves from a microwave introducing port of the furnace, and microwaves are used for heating glass in the furnace and for eliminating a foaming layer generated during glass melting in the glass melting furnace and simultaneously heating glass in the furnace. The defoaming method is simple and effective, free of addition of an additive and safe to use, so that the energy and cost are saved, the emission of harmful gases is reduced.
Description
Technical field
The present invention relates to a kind of microwave composite heating and microwave froth breaking glass melter.
Background technology
Nearly all material preparation process all relates to heating process, as ceramic oven dry and sintering, the calcination of cement clinker, the thermosetting of polymkeric substance, the melting of glass, smelting of metal etc.Microwave heating process is a unusual technique, and the microwave heating technique of material provides the novel method of improving physical characteristics of materials, also provides new process choice to those unworkable material preparation process simultaneously.The advantages such as the microwave heating process of material has transmitted radiation, direct overall heating, automatic control, pollution-free, selectivity strong and the process feature such as homogeneous heating has again rapidly and efficiently simultaneously, easy handling and the saving energy, show its advantage economically, provide preparation to there is the chance of new microtexture material to people.Therefore can say, nearly all material preparation process has the possibility of attempting applied microwave heating technique.
Glass fibre melting furnaces combustion heating is divided into two portions, and a part is melting end combustion heating, and another part is main channel and operation access combustion heating.The object of melting end combustion heating is exactly that the frit entering in kiln is heated to high temperature melting, it is formed evenly, and bubble, striped and calculus is all controlled the glass metal that meets within the specific limits forming requirements.Use microwave recombination energy fusion cast glass liquid, both thoroughly solved because of foam layer and frit iron level is high, diathermancy is a poor difficult problem, accelerated again the fusing of glass metal simultaneously, obtain high-quality glass metal.
Along with the generally application of high-grade refractory materials on kiln, glass kiln temperature is also along with being greatly improved, thereby calculus, foreign material and the brush line drawing lines etc. that make to affect glass quality no longer become major defect, and the bubble that glass produces in fusing operation process becomes more and more main mass defect, especially production high-quality glassy product, the contradiction between bubble and quality is more outstanding.Traditional technology operation and controlling has been not suitable with current modern production.This just requires us in production practice process, uses glasswork theory, finds out the technique and the control method that adapt at present large-scale modern production.
The bubble producing in actual production process is nothing more than being physics bubble and chemical bubbles, owing to floating off that moisture content and chemical reaction produce in material.And bubble that can be remaining in product source, the one, do not clarify a bubble in complete be deposited in glass metal, the 2nd, the reboil bubble producing because of " heavily boiling ".
In glass thaw process, glass metal surface occurs that foam layer is normal, causes melting end flame radiaton to be blocked but work as the blocked up meeting of foam layer, and glass temperature declines, and finally affects glass ware forming and wire-drawing operation stability.
Cause the blocked up reason of glass metal surfactant foam layer to have multiple, material composition fluctuation, temperature of fusion change, redox index changes and the pressure control thickness that all can affect foam layer such as improper.Mechanism after foam layer forms be the speed that generates of foam higher than the speed of lather collapse, and finally reach a balance.The method of existing attenuate foam layer mainly contains:
1. use oxygenant to regulate glass metal excessively strong reducing atmosphere, if suitably reduce or the saltcake of temporarily stopping using etc. finings admixtion COD is too high cannot solve in a short time, thereby can consider to add appropriate chemical additive to improve the diathermancy of glass metal.
2. guaranteeing under the stable prerequisite of production operation, suitably reducing the introduction volume (can be down to below 0.1%) of finings;
3. keep pressure-fired or micro-negative pressure in kiln;
4. adopt physical method to make foam layer acceleration rupture and reduce foam layer thickness, add waterworks at front wall place as adopted to forcing to spray into a small amount of water in kiln, utilize water to enter after kiln moment and become gas and glass metal surface pressure is increased suddenly and produce surging force and make lather collapse, reach the object of attenuate foam layer.
Existing debubbling method need to be introduced finings, and complex procedures, cost are high, and effect is unstable, increase energy consumption and noxious gas emission and have certain potential safety hazard.
Summary of the invention
Object of the present invention, is to provide a kind of microwave composite heating and froth breaking glass melter.
Technical scheme of the present invention is achieved like this:
A kind of microwave composite heating and froth breaking glass melter, melting furnaces by kiln at the bottom of, kiln top and around sidewall form, kiln top arranges microwave generator on any position of melting furnaces above or except kiln top, microwave generator imports microwave by microwave introducing port, utilizes the foam layer while microwave of glass melting generation in microwave elimination glass melter to glass heats in kiln.
Preferably, charging opening and burner entrance are set on the surrounding of melting furnaces sidewall; At the bottom of the kiln of unit kiln, power in highest terms and bubbler entrance;
Preferably, on any position of melting furnaces of the kiln of melting furnaces top above or except kiln top, be provided with microwave entrance;
Preferably, the kiln top of the melting furnaces any locational microwave introducing port of melting furnaces upper or except kiln top is single row or multiple rows, and alignment is arranged or is staggered.
Preferably, the electrode ports and the bubbler entrance that at the bottom of the kiln of melting furnaces, arrange are single row or multiple rows.
Preferably, the downward-sloping burner of flame spraying direction is also set on the surrounding of melting furnaces sidewall.
Preferably, the inclination angle of burner is 0 °～15 °.
The invention has the beneficial effects as follows: do not need or add a small amount of admixture just to realize the elimination of glass foam layer, adding of micro-wave energy also helps glass acceleration fusing, also can reach the object of energy-saving and emission-reduction.
Brief description of the drawings
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Accompanying drawing 1 is kiln vertical planning drawing;
Accompanying drawing 2 is kiln bottom plan view;
Accompanying drawing 3 is kiln vertical views;
Accompanying drawing 4-6 is kiln sectional view.
In figure, 1 charging opening, 2 electrode ports, 3 burner mouths, 4 bubbler entrances, 5 waveguide entrances, 6 microwave entrances.
Embodiment
Accompanying drawing 1-4 is the structural representation of embodiment 1.
A kind of microwave composite heating and froth breaking glass melter, melting furnaces by kiln at the bottom of, kiln top and around sidewall form, kiln top or microwave generator is set in any position of kiln, microwave generator imports microwave by kiln microwave introducing port, utilizes the foam layer of glass melting generation in microwave elimination glass melter simultaneously to glass heats in kiln.Charging opening 1 and burner entrance 3 are set on surrounding's sidewall of melting furnaces; At the bottom of the kiln of melting furnaces, power in highest terms 2 and bubbler entrance 4.The kiln top of melting furnaces or be N row at the microwave introducing port of any position of kiln, is staggered.The electrode ports 2 arranging at the bottom of the kiln of melting furnaces is N row, and bubbler entrance 4 is N row.
Accompanying drawing 5,6 illustrates the another kind of embodiment of microwave composite heating and froth breaking glass melter, and horizontal or oblique burner entrance is set on surrounding's sidewall of melting furnaces.
8. on surrounding's sidewall of the microwave composite heating shown in accompanying drawing 5,6 and froth breaking glass melter, the downward-sloping burner of flame spraying direction is also set.The inclination angle of burner is 0 °～15 °, preferably 5 °～12 °.
Above embodiment object is to illustrate the present invention, but not limits the scope of the invention, and all application that come by simple change of the present invention all drop in protection scope of the present invention.
Claims (7)
1. a microwave composite heating and froth breaking glass melter, described melting furnaces by kiln at the bottom of, kiln top and around sidewall form, it is characterized in that, kiln top arranges microwave generator on any position of melting furnaces above or except kiln top, microwave generator imports microwave by kiln microwave introducing port, utilizes microwave composite heating and eliminates the foam layer that in glass melter, glass melting produces.
2. microwave composite heating according to claim 1 and froth breaking glass melter, is characterized in that, charging opening (1) and burner entrance (3) are set on surrounding's sidewall of described melting furnaces; The kiln bottom electrical of described melting furnaces is (2) and bubbler entrance (4) in highest terms.
3. microwave composite heating according to claim 1 and froth breaking glass melter, is characterized in that, described kiln top arranges microwave entrance on any position of melting furnaces above or except kiln top.
4. microwave composite heating according to claim 1 and 2 and froth breaking glass melter, is characterized in that, the microwave introducing port arranging on any position of melting furnaces of described kiln top above or except kiln top is single row or multiple rows, and alignment is arranged or is staggered.
5. microwave froth breaking glass melter according to claim 1 and 2, is characterized in that, the electrode ports (2) and the bubbler entrance (4) that at the bottom of the kiln of described melting furnaces, arrange are single row or multiple rows.
6. microwave composite heating according to claim 3 and froth breaking glass melter, is characterized in that, the downward-sloping burner of flame spraying direction is also set on surrounding's sidewall of described melting furnaces.
7. microwave composite heating according to claim 6 and froth breaking glass melter, is characterized in that, the inclination angle of described burner is 0 °～15 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210552723.3A CN103880268A (en) | 2012-12-19 | 2012-12-19 | Glass melting furnace employing microwave combined heating and microwave defoaming |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210552723.3A CN103880268A (en) | 2012-12-19 | 2012-12-19 | Glass melting furnace employing microwave combined heating and microwave defoaming |
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| CN103880268A true CN103880268A (en) | 2014-06-25 |
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| CN201210552723.3A Pending CN103880268A (en) | 2012-12-19 | 2012-12-19 | Glass melting furnace employing microwave combined heating and microwave defoaming |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109851204A (en) * | 2019-04-23 | 2019-06-07 | 蚌埠中光电科技有限公司 | A kind of microwave heating system for platinum channel in glass substrate manufacturing process |
| CN109987823A (en) * | 2019-04-23 | 2019-07-09 | 蚌埠中光电科技有限公司 | A kind of electronical display glass substrate furnace discharge mouth heating device |
| US10364176B1 (en) | 2016-10-03 | 2019-07-30 | Owens-Brockway Glass Container Inc. | Glass precursor gel and methods to treat with microwave energy |
| US10427970B1 (en) | 2016-10-03 | 2019-10-01 | Owens-Brockway Glass Container Inc. | Glass coatings and methods to deposit same |
| US10479717B1 (en) | 2016-10-03 | 2019-11-19 | Owens-Brockway Glass Container Inc. | Glass foam |
-
2012
- 2012-12-19 CN CN201210552723.3A patent/CN103880268A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10364176B1 (en) | 2016-10-03 | 2019-07-30 | Owens-Brockway Glass Container Inc. | Glass precursor gel and methods to treat with microwave energy |
| US10427970B1 (en) | 2016-10-03 | 2019-10-01 | Owens-Brockway Glass Container Inc. | Glass coatings and methods to deposit same |
| US10479717B1 (en) | 2016-10-03 | 2019-11-19 | Owens-Brockway Glass Container Inc. | Glass foam |
| CN109851204A (en) * | 2019-04-23 | 2019-06-07 | 蚌埠中光电科技有限公司 | A kind of microwave heating system for platinum channel in glass substrate manufacturing process |
| CN109987823A (en) * | 2019-04-23 | 2019-07-09 | 蚌埠中光电科技有限公司 | A kind of electronical display glass substrate furnace discharge mouth heating device |
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Application publication date: 20140625 |