CN101774752B - Production method of ultra-white float glass - Google Patents
Production method of ultra-white float glass Download PDFInfo
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- CN101774752B CN101774752B CN2010101138152A CN201010113815A CN101774752B CN 101774752 B CN101774752 B CN 101774752B CN 2010101138152 A CN2010101138152 A CN 2010101138152A CN 201010113815 A CN201010113815 A CN 201010113815A CN 101774752 B CN101774752 B CN 101774752B
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- melting furnace
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- petroleum coke
- coke powder
- glass liquid
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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
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
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Abstract
The invention discloses a production method of ultra-white float glass. The production method comprises the following steps of: putting a float glass batch into a melting furnace, and meanwhile, conveying solid fuels to a burner on the melting furnace through a conveying device; then spraying the solid fuels into the melting furnace for burning and melting the batch into glass liquid by generated heat through thermal radiation; clearing, homogenizing and cooling the glass liquid and then ensuring that the glass liquid flows into a tin bath for molding; and annealing, cutting and preparing a finished product, wherein the solid fuels are petroleum coke powder. In the invention, the petroleum coke powder is brought into the melting furnace by components of Fe, S, V, Cr, Mn, and the like in an ash content generated after burning and influences the atmosphere in the melting furnace, thereby increasing the temperature difference of the upper and lower layers of the glass liquid, enhancing the vertical convection of the glass liquid, improving the viscosity of the glass liquid and further effectively controlling bubbles in the glass liquid. Additional supporting measures do not need to be added, and high-temperature operations are also not needed, thereby reducing the burning loss of the melting furnace and prolonging the service life of the melting furnace, and moreover, the production method does not have higher requirement on the configuration of bricks of the melting furnace.
Description
Technical field
The present invention relates to the working method of glass, specifically a kind of working method of ultra-white float glass.
Background technology
Along with the continuous development and progress of science and technology, the improving constantly of living standards of the people, people more and more pay attention to the visual appearance of glass.The high-clarity of glass and whiteness are important indicators that influences the glass appearance quality; And ultra-white float glass is a kind the most high-grade in the glassy product; Have high transmission rate, high transparent, product is glittering and translucent, noble quality is elegant, and glass family " quartzy prince's " title is arranged.One of present main purposes of ultra-clear glasses is exactly the solar energy photoelectric curtain wall field; With the substrate of its unique high transmission rate (more than 91%) as solar energy optical-thermal, photo-translating system; Improved photoelectric transformation efficiency greatly, for the development of heliotechnics provides more wide development space.
The personage thinks that total iron content generally is not more than under the situation of 150ppm in the ultra-white float glass composition in the industry, can be called ultra-clear glasses, and traditional ultra-white float glass all is to adopt combustion heavy oil kiln to produce; And because the total iron content in the glass ingredient is lower than 150ppm, the reduction of iron level makes the glass metal top layer weaken the receptivity of flame thermal radiation, thereby glass metal fluidised bed caloric receptivity is reduced; Temperature descends, and the transparency of fluidised bed increases simultaneously, and the heat of the motionless layer of Xiang Chidi glass metal transmission will increase along with the minimizing of iron level; Upper and lower temperature difference reduces, and the glass metal vertical convection weakens, and the clarification difficulty strengthens; The increase of skin glass liquid temp decline viscosity is unfavorable for clarification row bubble; And dog metal liquid temp rise viscosity reduces the easy reboil bubble that produces, and causes bubble increase in the sheet glass, and glass quality descends; For improving clarifying effect, the way of traditional mode of production ultra-white float glass generally takes to increase in pond pucking bubble technology, the admixtion measures such as compound clarifier, adjustment fusing system.
The glass melting temperature system generally all adopted high-temperature operation when tradition adopted combustion heavy oil kiln to produce ultra-white float glass; To reach about 1460 ℃ like back gable temperature; Hot(test)-spot temperature will reach about 1590 ℃; After taking high-temperature operation, have higher requirement on the one hand to being used for the refractory materials material that kiln builds by laying bricks or stones; Also will inevitably aggravate scaling loss on the other hand, reduce the work-ing life of kiln, greatly reduce the stability of kiln safe operation, also increase the use cost of fuel simultaneously kiln, like one 450 tons/day float glass furnace, 30,000 tons in year consumption heavy oil.
Summary of the invention
Goal of the invention: the purpose of this invention is to provide a kind of yield rate, rate of grade that can improve glassy product, reduce production costs, can realize the working method of the ultra-white float glass that drawing amount 700T/D is above.
Technical scheme: in order to solve the problems of the technologies described above; The technical scheme that the present invention adopted is: a kind of working method of ultra-white float glass; At first the float glass admixtion is dropped into melting furnaces, simultaneously solid fuel is transported to spray in the kiln behind the burner on the kiln through e Foerderanlage and burns, the heat of generation becomes glass metal through thermal radiation with batch melting; Glass metal flows into tin groove forming after clarification homogenizing, cooling then, after annealing, is cut into finished product; Wherein solid fuel is a petroleum coke powder.
In the said petroleum coke powder, moisture content 0-8%, carbon content 78%-100%, sulfur 0-5.0%, iron-holder 0-600ppm, vanadiumcontent 0-900ppm, volatile matter 0-16%, ash content 0-0.8%, all percentage ratios are weight percentage.
The preferred 250-600ppm of iron-holder in the said petroleum coke powder.
The preferred 250-900ppm of vanadiumcontent in the said petroleum coke powder.
The preferred 1.0-5.0% of sulfur in the said petroleum coke powder.
The preferred 5-16% of the volatile matter of said petroleum coke powder.
Petroleum coke powder is a crude oil after distillation is separating of oil with weight matter, and BO is again through the process of hot tearing, the product that is transformed; From seeing in appearance, coke is an out-of-shape, black not of uniform size block (or particle); Metalluster is arranged, the particle tool multi-pore structure of coke, main elementary composition be carbon; Occupy more than the 78wt%, remaining is hydrogen, oxygen, nitrogen, sulphur and some metallic elements.Volatile matter is meant and contains some not carbon hydrocarbon compounds of carbonization in the petroleum coke powder that ash content is meant the remaining not flammable mineral substance in burning back, is objectionable constituent, also comprises elements such as Fe, S, V, Cr, Mn in the ash content.
100 order granularity percent of pass of said petroleum coke powder are that 100%, 400 order granularity percent of pass are at 50%-53%.
Following table is the contrast of the present invention and prior art:
Can find out that from last table the present invention can realize that the drawing amount is 700T/D, and has improved yield rate, the bubble in the glass metal has obtained effective control.
Beneficial effect: compared with prior art, among the present invention, petroleum coke powder is brought the influence that reaches in the kiln atmosphere in the melting furnaces into through compositions such as Fe, S, V, Cr, Mn in the ash content of the back generation of burning; Increased the temperature difference of glass metal levels; Strengthened the vertical convection of glass metal, the viscosity of glass metal is improved, and then made the bubble in the glass metal obtain effective control; Need not increase other assist measure; Also need not high-temperature operation, reduced scaling loss to kiln, prolonged the work-ing life of kiln and the configuration of kiln brick material has not been had higher requirement yet; But fuel saving expense 1500-2800 is ten thousand yuan after using solid fuel, thereby can save production cost.
Embodiment
Come further to set forth the present invention through embodiment below, should understand these embodiment and only be used to the present invention is described and be not used in restriction scope of the present invention.
Embodiment 1: the working method of a kind of ultra-white float glass of the present invention; At first the float glass admixtion in the melting furnaces head feed bin is pushed melting furnaces through batch charger; Melting furnaces are fuel with the solid fuel, and solid fuel is transported to the burner on the kiln through e Foerderanlage, spray in the kiln then and burn; The float glass batch melting is become glass metal, again glass metal is flowed into tin groove forming with glass metal after clarification homogenizing, cooling.Solid fuel is through the petroleum coke powder of processing after levigate; The petroleum coke powder of processing after levigate need reach following requirement: moisture content 1.3%, carbon content 81.9%, sulfur 0.947%, iron-holder 110ppm, vanadiumcontent 45ppm, volatile matter 4.5%, ash content 0.31%, and above percentage number average is a weight percentage; Granularity≤80mm before the petroleum coke powder processing; The percent of pass of processing back 400 order granularities is 50.7%.
Embodiment 2: the working method of a kind of ultra-white float glass of the present invention; At first the float glass admixtion in the melting furnaces head feed bin is pushed melting furnaces through batch charger; Melting furnaces are fuel with the solid fuel, and solid fuel is transported to the burner on the kiln through e Foerderanlage, spray in the kiln then and burn; The float glass batch melting is become glass metal, again glass metal is flowed into tin groove forming with glass metal after clarification homogenizing, cooling.Solid fuel is through the petroleum coke powder of processing after levigate; In the said petroleum coke powder: moisture content 3%, volatile matter 7.5%, ash content 0.59%, carbon content 86.9%, sulfur 2.22%, iron-holder 371ppm, vanadiumcontent 468ppm, above percentage number average is a weight percentage; Granularity≤80mm before the petroleum coke powder processing; The percent of pass of processing back 400 order granularities is 51.2%.
Embodiment 3: the working method of a kind of ultra-white float glass of the present invention; At first the float glass admixtion in the melting furnaces head feed bin is pushed melting furnaces through batch charger; Melting furnaces are fuel with the solid fuel, and solid fuel is transported to the burner on the kiln through e Foerderanlage, spray in the kiln then and burn; The float glass batch melting is become glass metal, again glass metal is flowed into tin groove forming with glass metal after clarification homogenizing, cooling.Solid fuel is through the petroleum coke powder of processing after levigate; In the said petroleum coke powder: moisture content 5%, volatile matter 10.5%, ash content 0.75%, carbon content 85.66%, sulfur 3.10%, iron-holder 580ppm, vanadiumcontent 900ppm, above percentage number average is a weight percentage; Granularity≤80mm before the petroleum coke powder processing; The percent of pass of processing back 400 order granularities is 52.4%.
Embodiment 4: basic identical with embodiment 1; Different is that the petroleum coke powder that is adopted is: moisture content 0.1%, volatile matter 0.2%, ash content 0.13%, carbon content 78.5%, sulfur 0.18%, iron-holder 250ppm, vanadiumcontent 250ppm, and above percentage number average is a weight percentage; Granularity≤80mm before the petroleum coke powder processing; The percent of pass of processing back 400 order granularities is 50%.
Embodiment 5: basic identical with embodiment 1; Different is that the petroleum coke powder that is adopted is: moisture content 8%, volatile matter 16%, ash content 0.8%, carbon content 99.98%, sulfur 5%, iron-holder 600ppm, vanadiumcontent 900ppm, and above percentage number average is a weight percentage; Granularity≤80mm before the petroleum coke powder processing; The percent of pass of processing back 400 order granularities is 53%.
Embodiment 6: basic identical with embodiment 1; Different is that the petroleum coke powder that is adopted is: moisture content 0.3%, volatile matter 0.15%, ash content 0.08%, carbon content 87.3%, sulfur 1.56%, iron-holder 106ppm, vanadiumcontent 127ppm, and above percentage number average is a weight percentage; Granularity≤80mm before the petroleum coke powder processing; The percent of pass of processing back 400 order granularities is 51.9%.
Following table is the parameter that each embodiment adopts different petroleum coke powders to act as a fuel to produce ultra-white float glass:
Claims (2)
1. the working method of a ultra-white float glass; It is characterized in that: at first the float glass admixtion is dropped into melting furnaces; Simultaneously solid fuel is transported to spray in the kiln behind the burner on the kiln through e Foerderanlage and burns; The heat that produces becomes glass metal through thermal radiation with batch melting, and glass metal flows into tin groove forming after clarification homogenizing, cooling then, after annealing, is cut into finished product; Wherein solid fuel is a petroleum coke powder; In the said petroleum coke powder, moisture content 0-8%, carbon content 78%-100%, sulfur 1.0-5.0%, iron-holder 250-600ppm, vanadiumcontent 250-900ppm, volatile matter 5-16%, ash content 0-0.8%, all percentage ratios are weight percentage.
2. according to the working method of the ultra-white float glass described in the claim 1, it is characterized in that: 100 order granularity percent of pass of said petroleum coke powder are that 100%, 400 order granularity percent of pass are at 50%-53%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101138152A CN101774752B (en) | 2010-02-25 | 2010-02-25 | Production method of ultra-white float glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101138152A CN101774752B (en) | 2010-02-25 | 2010-02-25 | Production method of ultra-white float glass |
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| Publication Number | Publication Date |
|---|---|
| CN101774752A CN101774752A (en) | 2010-07-14 |
| CN101774752B true CN101774752B (en) | 2012-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010101138152A Expired - Fee Related CN101774752B (en) | 2010-02-25 | 2010-02-25 | Production method of ultra-white float glass |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110845119A (en) * | 2019-12-06 | 2020-02-28 | 武汉理工大学 | Method for co-firing petroleum coke powder and heavy oil in float glass kiln |
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- 2010-02-25 CN CN2010101138152A patent/CN101774752B/en not_active Expired - Fee Related
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| CN101774752A (en) | 2010-07-14 |
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Granted publication date: 20120627 Termination date: 20160225 |