CN2737792Y - Local aeration gradient combustion system for float glass melting furnace - Google Patents
Local aeration gradient combustion system for float glass melting furnace Download PDFInfo
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- CN2737792Y CN2737792Y CNU2004200040994U CN200420004099U CN2737792Y CN 2737792 Y CN2737792 Y CN 2737792Y CN U2004200040994 U CNU2004200040994 U CN U2004200040994U CN 200420004099 U CN200420004099 U CN 200420004099U CN 2737792 Y CN2737792 Y CN 2737792Y
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- oxygen
- float glass
- oxygen enrichment
- enriched
- nozzle
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
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Abstract
The utility model relates to a local aeration gradient combustion system for float glass melting furnace. The utility model comprises an oxygen-enriched air which comes from a nitrogen making machine and a floatation-method glass melting kiln, and is composed of a voltage-stabilizing protection device which can adjust suitable pressure, a control protection device, an oxygen-enriched high temperature preheater, a special oxygen-enriched nozzle and an automatically governing and reversing device. The rear of the oxygen-enriched high temperature preheater, the lower end of the burning jetting gun of the floatation-method glass melting kiln is provided with an oxygen-enriched nozzle which makes that after the oxygen-enriched air is preheated by traveling through the voltage-stabilizing protection device and the oxygen-enriched high temperature preheater, the oxygen-enriched air is sprayed into one space between the bottom of the flame and the upper part of the glass level in the melting furnace by the special oxygen-enriched nozzle to form gradient combustion. The utility model has the advantage that the utility model makes exhaustion of discharge gas become oxygen source of actualizing local oxygenation and combustion supporting technology; so, the local aeration gradient combustion system for float glass melting furnace saves investment, and improves production and quality of glass, reduces discharge of combustion supporting wind, smoke, CO and NO<X>, and prolongs the service life of the furnace.
Description
Technical field
The utility model relates to a kind of local oxygen enriching gradient firing system that is used for float glass smelting kiln.
Background technology
Float glass smelting kiln generally means the heat accumulating type cross flame glass melter of daily output sheet glass more than 120 tons.(deep cooling nitrogen production by air separation machine or transformation are adsorbed the nitrogen production by air separation machine to the float glass smelting kiln Nitrogen plant at present; be used for producing the shielding gas of high purity nitrogen as molten tin bath) byproduct; it is oxygen-rich air; general all as emptying waste gas; and this part emptying waste gas oxygen concentration mostly is 30-40% or 90-98.5% greatly; it is 42-50% that the small part oxygen concentration is also arranged, and the large-minded 1.1-12% that accounts for combustion-supporting air quantity depends on the type of Nitrogen plant.
Because whole oxygenation investment is high, side effect is many, as melting furnace life-span shortening, NO
XIncrease etc.Local oxygen enriching uses Rich Oxygen Amount fewer for whole oxygenation, generally accounts for the 1-15% of combustion-supporting air quantity.As people having the same habits' steel will be added on the blade! Local oxygen enriching is meant oxygen-rich air is sprayed in a certain space of flame below and metal level top in the melting furnaces by special-purpose oxygen enrichment nozzle.
Summary of the invention
The purpose of this utility model is the oxygen-rich air that makes full use of present float glass smelting kiln Nitrogen plant discharging; with its original minute-pressure; do not add any power-equipment; adopt local oxygen enriching gradient combustion technology; after making oxygen-rich air by voltage-stabilizing protection device and the preheating of oxygen enrichment high-temperature preheater; send into by special-purpose oxygen enrichment nozzle in a certain space of flame below and metal level top in the melting furnaces, form the gradient burning: make the flame bottom owing to the oxygen-enriched combustion-supporting effect elevates the temperature.The temperature distribution gradient in flame transverse section, promptly the bottom of flame (near metal level) is the highest temperature, and the middle part is the perfect combustion layer, and the upper temp of flame is lower than the middle part, but is the perfect combustion layer also.5-60 ℃ of big arch temperature decline, 5-50 ℃ of temperature of glass liquid raising, combustion air reduce 10-30%, flue dust reduces 10-40%, NO thereby can make
XReduce 20-40%, CO and reduce 40-90%.
A kind of local oxygen enriching gradient firing system that is used for float glass smelting kiln described in the utility model, comprise the oxygen-rich air and the float glass smelting kiln that derive from Nitrogen plant, by having voltage-stabilizing protection device, control protector, oxygen enrichment high-temperature preheater, the special-purpose oxygen enrichment nozzle of regulating convenient pressure and regulating reversing system automatically and formed; Back at the oxygen enrichment high-temperature preheater; the oxygen enrichment nozzle is equipped with in the bottom that is the burning spray gun of float glass smelting kiln; after making oxygen-rich air by voltage-stabilizing protection device and the preheating of oxygen enrichment high-temperature preheater; spray into by special-purpose oxygen enrichment nozzle in a certain space of flame below and metal level top in the melting furnaces, form the gradient burning.The burning rifle quantity of the quantity of oxygen enrichment nozzle described in the utility model and float glass smelting kiln is identical or less.The position of special-purpose oxygen enrichment nozzle described in the utility model, generally be positioned at the bottom of Fuel lance, about 3-20cm place, be inclined upwardly 1-10 °, shape is generally flat, the general 5-60 of spread angle °, material are generally heat resisting pipe or stainless steel tube, pottery or corundum, sectional area, promptly the oxygen enrichment linear speed must with couplings such as the working of a furnace and product, general oxygen enrichment linear speed is 20-180m/s.
The used oxygen-rich air of the utility model is collected in the emptying waste gas of float glass smelting kiln Nitrogen plant, it is oxygen-rich air, its oxygen concentration mostly is 30-40% or 90-98.5% greatly, and it is 42-50% that the small part oxygen concentration is also arranged, and the oxygen enrichment flow approximately accounts for the 1.1-12% of combustion-supporting air quantity.Float glass smelting kiln is applicable to the various float glass smelting kilns of 120 to 1000 tons of daily outputs.Make full use of the original minute-pressure of oxygen-rich air (generally in the 20-45Kpa scope); do not add any power-equipment; but need and regulate reversing system automatically and select suitable pressure by the emptying regulating and controlling valve of voltage-stabilizing protection device, this pressure generally hangs down 10-20Kpa than the pressure of Nitrogen plant emptying point.
The utility model has the advantages that emptying waste gas is become implements the oxygen source of local oxygen enriching burning-aid technology, thereby reduce investment outlay and improve output and quality, minimizing combustion air, flue dust, CO and the NO of glass
XDischarge, prolong furnace life etc.
Description of drawings:
Fig. 1 is a kind of process flow diagram that is used for the local oxygen enriching burning-aid system of float glass smelting kiln.
Among the figure: the oxygen-rich air 2, the voltage-stabilizing protection device that 1, derive from Nitrogen plant
3, control protector 4, oxygen enrichment high-temperature preheater 5, special-purpose oxygen enrichment nozzle
6, float glass smelting kiln 7, regulate reversing system automatically
Embodiment
The distance of in most cases selecting 50-200 rice apart from the use of melting furnaces is selected in the emptying of Nitrogen plant discharging oxygen-rich air 1; pressure is generally in the 20-45Kpa scope; collecting the pipeline of this part gas selects; select caliber by the micro pressure gas transfer designs; the general 5-15m/s of flow velocity comes stable system pressure by voltage-stabilizing protection device 2, guarantees the normal operation of Nitrogen plant; voltage-stabilizing protection device 2 comprises buffer tank and emptying regulating and controlling valve, and wherein the volume of buffer tank is generally 0.2-20m
3Control protector 3 waits according to the pressure of the design of the overall characteristic of float glass smelting kiln 6, special-purpose oxygen enrichment nozzle 5 and oxygen-rich air 1 and selects the suitable pressure low 10-20Kpa of pressure of Nitrogen plant emptying point (generally than), and by the emptying regulating and controlling valve of voltage-stabilizing protection device 2 and automatically adjusting reversing system 7 realize.The oxygen-rich air that is come out by voltage-stabilizing protection device 2 utilizes the little kiln top of float glass smelting kiln 6 to go up used heat (taking-up 1-2 layer thermal insulation layer by oxygen enrichment high-temperature preheater 4; after placing oxygen enrichment high-temperature preheater 4, cover thermal insulation layer again) enter special-purpose oxygen enrichment nozzle 5 after being preheating to 120-350 ℃.The fuel gun quantity of the general and float glass smelting kiln 6 of the quantity of special-purpose oxygen enrichment nozzle 5 quite or less mainly waits definite according to the temperature schedule of float glass smelting kiln 6 and Rich Oxygen Amount and concentration.And the commutation of regulating reversing system 7 principal security oxygen-rich air automatically is consistent with the commutation of float glass smelting kiln 6.
With 330 tons of glass melters of a daily output is example, and institute joins Nitrogen plant and is the single high type of empty branch, and its oxygen-rich air concentration is 30.3%, the about 3200-3300Nm of flow
3/ h, the about 28-30KPa of pressure is from 70 meters distances of glass melter.The lower limit that we get oxygen enrichment flow and pressure designs, and the buffer tank volume is got 6m
3, the pressure of oxygen-rich air is strict controlled in 23 ± 0.5KPa scope in the buffer tank, after oxygen-rich air is preheating to about 250 ℃, delivers to special-purpose oxygen enrichment nozzle 5.The quantity of special-purpose oxygen enrichment nozzle 5 is consistent with the quantity of fuel lance.About oxygen enrichment linear speed 60m/s.After adopting this new and high technology, on average increase production 6%, the product quality percentage improves 4%, energy-conservation 8%, big arch temperature descends 40 ℃, temperature of glass liquid improve that 15 ℃, combustion air reduce 20%, flue dust reduces 20%, NO
XMinimizing 30%, CO reduce 70%, and the payback period was less than 2 months.
Claims (3)
1, a kind of local oxygen enriching gradient firing system that is used for float glass smelting kiln, comprise the oxygen-rich air (1) and the float glass smelting kiln (6) that derive from Nitrogen plant, it is characterized in that by having voltage-stabilizing protection device (2), control protector (3), oxygen enrichment high-temperature preheater (4), the special-purpose oxygen enrichment nozzle (5) of regulating convenient pressure and regulating reversing system (7) automatically and formed; Back in oxygen enrichment high-temperature preheater (4); oxygen enrichment nozzle (5) is equipped with in the bottom that is the burning spray gun of float glass smelting kiln (6); after making oxygen-rich air by voltage-stabilizing protection device (2) and oxygen enrichment high-temperature preheater (4) preheating; spray into by special-purpose oxygen enrichment nozzle (5) in a certain space of interior flame below of melting furnaces and metal level top, form gradient and burn.
2, a kind of local oxygen enriching gradient firing system that is used for float glass smelting kiln according to claim 1, it is characterized in that: the burning rifle quantity of the quantity of oxygen enrichment nozzle (5) and float glass smelting kiln (6) is identical or less.
3, a kind of local oxygen enriching gradient firing system that is used for float glass smelting kiln according to claim 1, it is characterized in that: the position of special-purpose oxygen enrichment nozzle (5), generally be positioned at the bottom of Fuel lance, about 3-20cm place, be inclined upwardly 1-10 °, shape is generally flat, and the general 5-60 of spread angle °, material are generally heat resisting pipe or stainless steel tube, pottery or corundum, sectional area, be the oxygen enrichment linear speed must with couplings such as the working of a furnace and product, general oxygen enrichment linear speed is 20-180m/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200040994U CN2737792Y (en) | 2004-02-12 | 2004-02-12 | Local aeration gradient combustion system for float glass melting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200040994U CN2737792Y (en) | 2004-02-12 | 2004-02-12 | Local aeration gradient combustion system for float glass melting furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2737792Y true CN2737792Y (en) | 2005-11-02 |
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ID=35347704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2004200040994U Expired - Fee Related CN2737792Y (en) | 2004-02-12 | 2004-02-12 | Local aeration gradient combustion system for float glass melting furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2737792Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103395964A (en) * | 2013-08-12 | 2013-11-20 | 华尔润玻璃产业股份有限公司 | Oxygen-rich glass kiln |
-
2004
- 2004-02-12 CN CNU2004200040994U patent/CN2737792Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103395964A (en) * | 2013-08-12 | 2013-11-20 | 华尔润玻璃产业股份有限公司 | Oxygen-rich glass kiln |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |