CN101407369B - Suspending boiling melting method and apparatus for glass - Google Patents
Suspending boiling melting method and apparatus for glass Download PDFInfo
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- CN101407369B CN101407369B CN2008101974617A CN200810197461A CN101407369B CN 101407369 B CN101407369 B CN 101407369B CN 2008101974617 A CN2008101974617 A CN 2008101974617A CN 200810197461 A CN200810197461 A CN 200810197461A CN 101407369 B CN101407369 B CN 101407369B
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Abstract
The invention relates to a glass suspension boiling melting method and equipment. The method is: glass batch is made into spheres with the diameter ranging from 10-25mm; the spheres go through a suspension boiling melting furnace, in which a high-boiling segment with the temperature higher than 1600 DEG C is arranged, the glass batch is liquefied under the combined action of hot flame and thermal current in the furnace and develops into liquid beads falling to a glass metal accumulation tank; and then the glass metal is clarified to remove the bubble. The equipment is L-shaped and comprises a batch feeder (1), the suspension boiling melting furnace (3), a combustor (6), the glass metal accumulation tank (8), an auxiliary melting combustor (10) and a feed tank (14); multilayer combustors (6) are alternately arranged in the suspension boiling area (4) of the melting furnace, the glass metal accumulation tank is at the lower part of the melting furnace and provided with a shallow tank clarification area (11), the auxiliary melting combustor (10) is arranged at the upper part of the glass metal accumulation tank, and in the clarification area (11), a 'U' partition ceiling (12) is arranged between a melting end and a cooling part (13) which is communicated with the feed tank (14).
Description
Technical field
The present invention relates to a kind of glass suspending boiling melting method and equipment, the particularly quick fusing of glass batch spheroidal particle has very high heat exchanger effectiveness between flame and the admixtion, thereby reaches the purpose that reduces energy consumption.
Background technology
Worldwide, resource, the energy are tending towards nervous, energy-conservation, reduction of discharging work is imperative.Glass industry belongs to the rich and influential family of energy consumption.Traditional cell furnace smelting technology, the feeding mode of glass batch is to adopt the plane formula thin layer to feed intake, and fuel is sent to the kiln flame space by molten combustion system, and with through the regenerator preheating, combustion air phase mixed firing by port enters flame space discharges a large amount of heats.Flame is the surface that covers admixtion and glass metal, and the distance of flame and glass surface is greatly in the scope of 200～350mm.Flame is finished by approach such as radiation, convection current, conduction the thermal exchange of admixtion and glass metal.In the heat-processed of admixtion and glass metal, by conduction and convection current heat is delivered to the inside of admixtion and glass metal often after the heating of the surface of material again.This heating means, heat exchanger effectiveness is low, and most heat is taken away by flue gas.Even the total oxygen and the oxygen-enriched combustion technology of present research and development, its flame remains the top that is positioned at glass batch and glass, and heat exchange belongs to indirect mode, and only its temperature of fusion is higher, and products of combustion is less, and pollutant emission is less.
Traditional glass melting method, the heat exchange between flame and glass batch and glass metal is limited, and modern combustion technology has made it reach the limit.The boiling melting technology of glass is a kind of more advanced smelting technology, be characterized in the glass batch pelletizing by one section thermal-flame district (more than 1600 ℃), under the acting in conjunction of flame and hot gas flow, glass batch is melted rapidly, forms the very little glass metal of viscosity.Because the glass batch pelletizing is to carry out very heat exchange fully with the boiling shape at high-temperature area, and admixtion and glass fully contacts with flame, and heat exchanger effectiveness is higher.
Summary of the invention
The object of the present invention is to provide a kind of glass melting method and apparatus rapidly and efficiently, to reach the glass melting rate that improves, save energy, the purpose of the pollutant discharge amount of reduction unit weight product.
For achieving the above object, the invention provides glass suspending boiling melting technology and device.
Method principle of the present invention: the core of glass boiling melting technology is the material group that glass batch is prepared into certain particle size and intensity, allow them directly by the thermal-flame zone, and form suspend fluidized shape, at this moment, glass batch group fully contacts with flame with the glass drop, make flame form form multi-faceted, three-dimensional heating, and can make it form drop fast admixtion group.By controlling the buoyancy in suspend fluidized zone, and little glass metal drop in be in contact with one another after because capillary effect makes them merge mutually, forms bigger particulate drop, under the effect of gravity the whereabouts, gather.
Utilize suspending boiling melting technology molten glass, be heat exchange methods such as radiation, convection current or conduction all utilize very abundant, thermo-efficiency is higher.Because glass batch group has surface-area very, the radiative transfer formula when material is besieged between the two articles is:
Wherein:
Q
2-1In unit time, the unit surface high temp objects is passed to the net heat of cryogenic object and (is done card/rice
2The time);
T
1Temperature (° K) for the enclave plastid;
T
2For surrounding the temperature (° K) of material;
ε
nBe blackness;
C
0Be radiation coefficient (kilocalorie/rice
2The time ° K);
F
1Be the long-pending (rice of object surfaces
2).
Transmission of heat by convection between the material is followed:
Q＝α
k(t
r-t
w)F
The heat (kilocalorie/time) that transmits in Q-unit time;
α
k-coefficient of heat convection (kilocalorie/rice
2The time ℃);
t
rThe temperature of-flame (℃);
t
wThe temperature of-frit group (℃);
The contact area of F-material (rice
2).
Can find by above two groups of formula, when the material of material is certain, the character of fuel and temperature field one regularly, the heat exchange amount between the decision material only with material between the surface-area that is in contact with one another relevant, and the surface-area of contact is big more, heat exchange is abundant more, and heat utilization ratio is also high more.
Be heated the heated surface area of material, and determined thermal exchange between the two with the way of contact of flame.At present, the feeding mode of traditional glass batch is to adopt the plane formula thin layer to feed intake, and bed thickness is generally between 50～100mm.If calculate with bed thickness 50mm, 1 cubic metre of glass batch can be subjected to being equivalent to 20 square metres of direct-fired areas of flame.When adopting boiling melting, situation has just been made a world of difference.What should emphasize is that the glass batch ball of boiling melting is all to be wrapped up by flame.The diameter range of the glass batch that this method adopted is 10～25mm.If with the pellet diameter is the material group calculating of 20mm, the volume and the surface-area of pellet are respectively:
S
Ball=3 π R
2=3 * 3.14 * (0.01)
2=9.42 * 10
-4m
2
1 cubic metre admixtion is equivalent to have 2.39 * 10
5Individual diameter is the pellet of 20mm.Their surface-area is:
S
Table=9.42 * 10
-4* 2.39 * 10
5=225m
2
Can find that by contrast the heat interchanging area of material group has increased more than 10 times, this will certainly cause its heat exchange efficiency higher, more abundant, and in identical heat-up time, the temperature of material group improves faster, and liquid phase wherein occurs faster, more, and melting efficiency is higher.
According to above analysis, the technical scheme that reaches the object of the invention is:
A kind of glass suspending boiling melting method is characterized in that, this method steps comprises:
1) (preparation method is: prepare burden according to the prescription that is melted, glass batch to be prepared into the spheroidal particle that diameter range is 10～25mm, all raw materials are packed into ground 0.5-1 hour in the shredder, mix the moisture and a small amount of organic binder bond (small molecules resin that are equivalent to admixtion total mass 5-10% when grinding, as polyoxyethylene glycol), obtain the admixtion pug; Utilize the compacting apparatus for making pearl ball glass batch pug to be prepared into spheroidal particle with certain intensity.)；
2), make spheroidal particle that step 1) obtains be 4-6 rice, highly be the suspending boiling melting stove of 8-12 rice by one section diameter, there is one section high-boiling section of arranging the multilayer burner middle and lower part of this suspending boiling melting stove, this section temperature is more than 1600 ℃, length is 26 meters, glass batch adds the suspending boiling melting stove from top, under the acting in conjunction of furnace high-temperature flame and hot gas flow, obtain fast liquefying, merge and grow up bigger liquid pearl mutually, fall under gravity into glass metal and gather the pond;
3), the glass metal that gathers in the pond of glass metal gets rid of the bubble in glass metal by the shallow pond settling section that gathers the pond.
The glass melter (referring to accompanying drawing) that glass suspending boiling melting method of the present invention uses is the L type, and it comprises: cast feeder 1, and suspending boiling melting stove 3, burner 6, glass metal gather pond 8, auxiliary fusing burner 10 and charging tank 14; Cast feeder 1 is on suspending boiling melting stove 3 tops, be furnished with multilayer burner 6 at suspend fluidized regional 4 of suspending boiling melting stove 3, the burner 6 interlaced layouts of different floor heights, in suspending boiling melting stove 3 bottoms, design has high temp glass liquid to gather pond 8, the top of gathering the pond at glass metal is furnished with many auxiliary fusing burners 10 adjusting glass metals 9 temperature, glass metal gathers pond 8 one section shallow pond settling section 11, settling section 11 tops, shallow pond do not have auxiliary fusing burner 10, have " U " to separate furred ceiling 12 between the melting end of shallow pond settling section 11 and cooling end 13, the cooling end 13 of shallow pond settling section 11 communicates with glass metal charging tank 14.
The present invention has obvious energy-saving effect, estimates that synthesis energy saving is more than 20%.
Description of drawings
Fig. 1 is a glass suspending boiling melting stove synoptic diagram.
Fig. 2 is a glass suspending boiling melting stove A-A sectional view.
Fig. 3 is a glass suspending boiling melting stove B-B sectional view.
Fig. 4 is a glass suspending boiling melting stove C-C sectional view.
Among the figure: 1. cast feeder; 2. batch particle; 3. suspending boiling melting stove; 4. suspending boiling melting district; 5. flame; 6. burner; 7. glass drop; 8. glass metal gathers the pond; 9. glass metal; 10. auxiliary fusing burner; 11. shallow pond settling section; 12. " U " of melting end and cooling end separates furred ceiling; 13. cooling end; 14. charging tank.
Embodiment
Below in conjunction with accompanying drawing enforcement of the present invention is described further.
The structure of glass suspending boiling melting device is the L type shown in Fig. 1-4, mainly comprise 1. cast feeders; 3. suspending boiling melting stove; 6. burner; 8. glass metal gathers the pond; 10. auxiliary fusing burner; 12. " U " of melting end and cooling end separates furred ceiling; 14. charging tank etc.. cast feeder 1 is on suspending boiling melting stove 3 tops, be furnished with multilayer burner 6 at suspend fluidized regional 4 of suspending boiling melting stove 3, the burner 6 interlaced layouts of different floor heights, in suspending boiling melting stove 3 bottoms is that glass metal gathers pond 8, the top of gathering the pond at glass metal is furnished with many auxiliary fusing burners 10, glass metal gathers pond 8 one section shallow pond settling section 11 that does not have auxiliary fusing burner 10, have " U " to separate furred ceiling 12 between the melting end of shallow pond settling section 11 and cooling end 13, cooling end 13 communicates with glass metal charging tank 14.
Suspending boiling melting stove 3 has one section diameter to be 4-6 rice, highly to be the setting section of 8-12 rice, the high-boiling segment length is a 2-6 rice more than 1600 ℃, present embodiment is erect a section diameter and is 4 meters, highly is 8 meters, two-layer burner 6 is being arranged at 1.5 meters and 3.5 meters positions from bottom to up in this setting section, every layer of 6 burner equal angles are uniform, two-layer burner 6 interlaced layouts, and in cylindrical shell, form certain to buoyancy.
Glass suspending boiling melting method of the present invention, glass batch is prepared into the spheroidal particle that diameter range is 10～25mm (with common prilling process preparation, the preparation method is: prepare burden according to the prescription that is melted, all raw materials are packed into ground 0.5-1 hour in the shredder, mix the moisture and a small amount of organic binder bond (polyoxyethylene glycol) that are equivalent to admixtion total mass 5-10% when grinding, obtain the admixtion pug; Utilize the compacting apparatus for making pearl ball glass batch pug to be prepared into spheroidal particle with certain intensity.), cast feeder 1 is put into admixtion spheroidal particle 2 in the suspending boiling melting stove 3, carries out sufficient heat exchange with flame 5 in suspension melting district 4, and is melted rapidly.In section multilayer burner 6 burned flames of the being arranged generations (temperature is more than 1600 ℃) thus of suspend fluidized regional 4 suspending power.The burner 6 interlaced layouts of different floor heights are so that form uniform suspending power on the section of whole melting area.A large amount of liquid phases have appearred in the batch particle that is melted rapidly (sphere) 2, form glass drop 7.Under the effect of glass surface tension, the glass drop is in contact with one another grows up, and under the effect of gravity, falls into glass metal and gathers pond 8, forms glass metal 9 therein.The top of gathering the pond at glass is furnished with many auxiliary fusing burners 10, is used for the adjusting of glass metal 9 temperature.Glass metal is clarified by 11 pairs of glass metals 9 of one section shallow pond settling section that glass metal gathers pond 8.Glass metal gathers the shallow pond settling section 11 in pond and does not establish auxiliary fusing burner.This shallow pool structure helps the eliminating of bubble in the glass metal, improves the quality of glass metal.Clarification glass metal well enters cooling end 13 by " U " compartmented 12 of melting end and cooling end, and the glass metal that reaches forming requirements through excess temperature control flows into charging tank 14.
The operation of glass suspending boiling melting method provided by the invention is:
One, the ignition combustion device 6, form certain suspending boiling melting district 4 by thermal-flame in suspending boiling melting stove 3;
Two, after the temperature for the treatment of the suspending boiling melting district reaches more than 1600 ℃, start cast feeder 1, glass batch particle (sphere) 2 is evenly thrown in the suspending boiling melting stove 3.Glass batch particle 2 suspends in the suspending boiling melting district, heat exchange, fusing, forms liquid phase rapidly, and forms the glass drop 9 of larger particles under capillary effect.Glass metal drops under the effect of gravity, falls into glass metal and gathers pond 8;
Three, glass metal 9 gathers the glass metal that forms certain depth in the pond 8 at glass metal, and the temperature of glass metal is regulated by the auxiliary fusing burner 10 on its top.Glass metal can flow to the more shallow shallow pond settling section 11 of depth of metal behind certain depth;
Four, the clarifying glass metal of process enters cooling end 13 by " U " the separation furred ceiling (compartmented) 12 of melting end and cooling end, and the glass metal that reaches forming requirements through excess temperature control flows into charging tank 14.For forming of glass provides qualified glass metal.
Claims (2)
1. the glass suspending boiling melting method is characterized in that, its method steps comprises:
1), glass batch is prepared into the spheroidal particle that diameter range is 10～25mm, the preparation method is: prepare burden according to the prescription that is melted, all raw materials are packed into ground 0.5-1 hour in the shredder, mix the moisture and a small amount of organic binder bond polyoxyethylene glycol that are equivalent to admixtion total mass 5-10% when grinding, obtain the admixtion pug; Utilize the compacting apparatus for making pearl ball glass batch pug to be prepared into spheroidal particle with certain intensity;
2), make spheroidal particle that step 1) obtains be 4-6 rice, highly be the suspending boiling melting stove of 8-12 rice by one section diameter, there is one section high-boiling section of arranging the multilayer burner middle and lower part of this suspending boiling melting stove, this section temperature is more than 1600 ℃, length is 2-6 rice, glass batch adds the suspending boiling melting stove from top, under the acting in conjunction of furnace high-temperature flame and hot gas flow, obtain fast liquefying, merge and grow up bigger liquid pearl mutually, fall under gravity into glass metal and gather the pond;
3), the glass metal that gathers in the pond of glass metal gets rid of the bubble in the glass metal by the shallow pond settling section that gathers the pond.
2. the glass melter that uses of a glass suspending boiling melting method is characterized in that be the L type, it comprises: cast feeder (1), and suspending boiling melting stove (3), burner (6), glass metal gather pond (8), auxiliary fusing burner (10) and charging tank (14); Cast feeder (1) is on suspending boiling melting stove (3) top, suspend fluidized zone (4) at suspending boiling melting stove (3) is furnished with multilayer burner (6), the interlaced layout of burner (6) of different floor heights, in suspending boiling melting stove (3) bottom, design has high temp glass liquid to gather pond (8), the top of gathering the pond at glass metal is furnished with many auxiliary fusing burners (10) adjusting glass metal (9) temperature, glass metal gathers pond (8) one section shallow pond settling section (11), shallow pond settling section (11) top does not have auxiliary fusing burner (10), have " U " to separate furred ceiling (12) between the melting end of shallow pond settling section (11) and cooling end (13), cooling end (13) communicates with glass metal charging tank (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101974617A CN101407369B (en) | 2008-10-30 | 2008-10-30 | Suspending boiling melting method and apparatus for glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101974617A CN101407369B (en) | 2008-10-30 | 2008-10-30 | Suspending boiling melting method and apparatus for glass |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101407369A CN101407369A (en) | 2009-04-15 |
| CN101407369B true CN101407369B (en) | 2011-01-12 |
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|---|---|---|---|
| CN2008101974617A Expired - Fee Related CN101407369B (en) | 2008-10-30 | 2008-10-30 | Suspending boiling melting method and apparatus for glass |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6015741B2 (en) * | 2012-02-20 | 2016-10-26 | 旭硝子株式会社 | Glass melting furnace, molten glass manufacturing method, glass product manufacturing apparatus, and glass product manufacturing method |
| CN105236709A (en) * | 2015-11-23 | 2016-01-13 | 重庆鑫景特种玻璃有限公司 | Molten glass temperature adjusting device for melting furnace outlet end cooling portion |
| JP6675588B2 (en) * | 2016-11-15 | 2020-04-01 | 日本電気硝子株式会社 | Apparatus and method for manufacturing glass article |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4183725A (en) * | 1976-09-04 | 1980-01-15 | Battelle Development Corporation | Method and apparatus for melting glass in burner-heated tanks |
| CN1077436A (en) * | 1992-03-30 | 1993-10-20 | 皮尔念顿公共有限公司 | Glass melting |
| CN1594149A (en) * | 2004-07-02 | 2005-03-16 | 谢西平 | Full premixed combustion smelting method and smelting furnace for producing glass using the method |
-
2008
- 2008-10-30 CN CN2008101974617A patent/CN101407369B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4183725A (en) * | 1976-09-04 | 1980-01-15 | Battelle Development Corporation | Method and apparatus for melting glass in burner-heated tanks |
| CN1077436A (en) * | 1992-03-30 | 1993-10-20 | 皮尔念顿公共有限公司 | Glass melting |
| CN1594149A (en) * | 2004-07-02 | 2005-03-16 | 谢西平 | Full premixed combustion smelting method and smelting furnace for producing glass using the method |
Non-Patent Citations (2)
| Title |
|---|
| JP昭62-297220A 1987.12.24 |
| JP特开2007-297239A 2007.11.15 |
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