CN105819669A - Novel method for melting glass liquid through immersion and combustion on glass liquid by jet pipe of combustor - Google Patents
Novel method for melting glass liquid through immersion and combustion on glass liquid by jet pipe of combustor Download PDFInfo
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- CN105819669A CN105819669A CN201510010798.2A CN201510010798A CN105819669A CN 105819669 A CN105819669 A CN 105819669A CN 201510010798 A CN201510010798 A CN 201510010798A CN 105819669 A CN105819669 A CN 105819669A
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- kiln
- glass liquid
- kiln crown
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- vitreous humour
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Abstract
The invention relates to a novel method for melting glass liquid through immersion and combustion on glass liquid by a jet pipe of a combustor. The method is characterized in that the jet pipe of the combustor is inserted into the glass liquid from an upper part of the glass liquid through a kiln crown, a breast wall or a pool wall, a gaseous fuel and a gas oxidizing agent are respectively injected into the glass liquid through the jet pipe of the combustor or mixed and then injected into the glass liquid, so that the gaseous fuel and the gas oxidizing agent are combusted in the glass liquid, the generated high-temperature gas stirs the glass liquid, and most heat is transferred to the glass liquid and a mixed batch. For preventing severe erosion of the bricks of the kiln crown and preventing usage life shortening, the kiln crown is designed as a continuously updated structure, the structure is characterized in that the bricks of the kiln crown are suspended by a hanging wheel for compositing a movable kiln horizontal suspended ceiling, the bricks are easily and horizontally moved with entire row on the kiln along a transverse direction; new supplementary bricks of the kiln crown are added in the horizontal suspended ceiling from one transverse side of the kiln crown and pushed to the other side, at the same time, the corroded old bricks are pushed from the other side and discharged; so that continuous update of the bricks of the kiln crown can be guaranteed.
Description
Technical field
Glass melting process.
Background technology
Founding of vitreous humour is technique most important, most crucial in technology for making glass.Its quality workmanship for environmental protection, energy-saving and emission-reduction and glass and the height of cost, have very important effect.
At present, surface heated method is all used with fuel continuous melting vitreous humour.It has several shortcoming being difficult to and overcoming: one is that the thermal efficiency is relatively low, and its thermal losses accounts for the 70% ~ 80% of total heat consumption, and per kilogram vitreous humour heat consumption is more than 1800 kilocalories；Two is that melting rate is relatively low, typically below 1.5 ton/square metre days；Three is that the fuel gas temperature of melting tank combustion space is high, flow velocity big, very fast to kiln refractory corrosion, reduces kiln service life.In order to save the energy and reduce cost and improve kiln service life, the most all replacing surface heating exploring more effective heating means, submerged combustion is exactly one of which.
Up to now, so-called submerged combustion is to be immersed in vitreous humour by gaseous fuel combustion device, and the waste gas of burning is injected directly in the vitreous humour of molten bath with high temperature and high speed, stirs vitreous humour, and major part heat is passed to vitreous humour and batch, make frit melt rapidly.
This method not only makes the heat of burning gases be fully absorbed by vitreous humour, heat loss is little, melting rate is high, energy-saving effect very notable (abroad introduce the melting rate of submerged combustion method up to 9 ~ 10 ton/square metre days, per kilogram vitreous humour heat consumption is at 1000 ~ 1300 kilocalories).And owing to high-temperature gas seethes, vitreous humour is played stirring action, make the vitreous humour in pond evenly.The most identical with the temperature of Watch glass liquid in molten bath owing to leaving the EGT of vitreous humour again, thus reduce the temperature in melting furnaces space, extend the service life of kiln.
Submerged combustion method has many advantages, and therefore the U.S. including China, day, method, E Deng state all successively conduct in-depth research and test, but do not succeed in large-scale industrial application.
Its reason is, the method of this tradition submerged combustion has insoluble problem: 1, clear up problems: when spraying into combustion gas and air mixture in vitreous humour (combustion product), the operating condition of nozzle is relatively difficult, when only mixed gas consumption substantially exceeds and embraces with air or dry drum, found and just can be normally carried out.Owing to the fierce bubbling of vitreous humour seethes, making vitreous humour show bubble, the minute gas field trash of self significantly increases, and therefore, makes vitreous humour clarification highly difficult.2, fuel problem: occlusion or the blub composition that is mingled with mainly do not participate in the inactive gas of reaction in the melt, the nitrogen namely discharged in fuel combustion process, as: in combustion product produced by with the submerged combustion nozzle of natural gas one air gas mixture, nitrogen content is more than 70%, general combustion method then allows the nitrogen content in combustion product less than 30%, for plate glass, then preferably no more than 10% (weight).Therefore, this is also the main cause that air inclusions are many.Can effectively solve above-mentioned two problems by pure oxygen burning technique, but the problem brought is that flame temperature is too high, nozzle deteriorates too fast, cannot compensate or change again.3, combustor problem: due to burner be submergence in the melt, its quality, riding position and operation control to require the most than ever strict, and otherwise, once burning is broken down, and make vitreous humour enter people's solidification in it, then can not be continuing with.It addition, when vitreous humour reaches certain depth, the impulse force of nozzle is inadequate, flame does not the most enter vitreous humour, and refractory material sprays from the side.Qinhuangdao Glass Inst. the most just ran into this situation.Reduce nozzle diameter and can solve the problems referred to above, but the problem that calory burning is not enough can be caused.4, refractories: owing to vitreous humour acutely seethes in kiln, the vitreous humour that can be splashed out in superstructure space washes away, and general silica brick and chrome brick do not adapt to the needs of this melting furnaces.When arranging multiple burner noz(zle) at the bottom of pond, also weakening the intensity of refractory material.It addition, such as burn in liquation, natural gas (for the 7-10% of total amount in infeed kiln), can make heat exchange be greatly reinforced.Improving the directly amount of natural gas of burning in melting furnaces too much, refractory material is serious by erosion.5, the fluctuation of vitreous humour viscosity, bleed pressure and flow, the impact on mixture pressure and spray speed is the biggest so that it is be maintained in vitreous humour burning with being difficult to long term constant, easily causes de-fire or tempering phenomenon.6, the most key problem is: owing to being limited by material, and burner (especially bocca) is easily lost, the life-span is shorter, and both cannot compensate and also be difficult to change.So while through long-term research and test, be but difficult to put into actual application.
Summary of the invention
For solving the problems referred to above, the invention provides a kind of combustor nozzle new method of submerged combustion fusion cast glass liquid on liquid, its technology is characterized in that by kiln crown, breastwork or pool wall by combustor nozzle in vitreous humour vitreous humour inserted above, by combustor nozzle, gaseous fuel and gaseous oxidant each or are injected in vitreous humour after mixing, it is made to burn in vitreous humour, the high-temperature gas agitation vitreous humour produced, and major part heat is passed to vitreous humour and batch, make frit melt rapidly homogenizing.In order to prevent elongated combustor nozzle deformation and breakage, it is necessary to shorten its length.Its solution is: greatly reduces the distance between kiln crown and the metal level around at combustor nozzle place, even can be immersed under vitreous humour surface by its kiln crown lower surface.
It is severely eroded to prevent the distance between kiln crown and metal level from approaching rear ceiling brick, the lost of life, can be designed as by kiln crown can the most more new construction, its specific practice is: by kiln crown suspended block hanging wheel hanging form the horizontal furred ceiling of moveable kiln in orbit, make kiln crown suspended block kiln transversely can easily entire row traversing；The kiln crown suspended block newly supplemented joined the horizontal furred ceiling of moveable kiln from the side that kiln crown is horizontal and pushes opposite side to, the old kiln crown suspended block being etched released from opposite side simultaneously and unload；Thus kiln crown suspended block can be updated the most continuously.This horizontal ceiling structure of moveable kiln also can be used for the glass furnace of surface heating.
In order to reduce combustion gas flow the fusion temperature of reinforcing glass liquid and intensity, above-mentioned gas oxidant can use oxygen-enriched or pure oxygen.
Compared with the combustor nozzle of previous people's development test submerged combustion method below vitreous humour or in side insertion vitreous humour, this combustor nozzle advantage of the new method of submerged combustion fusion cast glass liquid on liquid is: 1, can overcome vitreous humour viscosity and the impact of combustion product pressure oscillation, combustion process is reliable and stable；2, the combustion depth in vitreous humour is adjustable controlled；3, this submerged combustion equipment use and change simple and convenient and service life can be with kiln age with long；4, leakage or the blocking of vitreous humour are not resulted in.
Accompanying drawing explanation
The invention will be further described below in conjunction with the accompanying drawings.
Fig. 1 is the sectional structure chart of one of the embodiment of the present invention.
1. bottom block in figure, 2. tank block, 3. vitreous humour, 4. combustor nozzle, 5. kiln crown suspended block, the kiln crown suspended block that 5a. newly supplements, the old kiln crown suspended block that 5b. was etched, 6. suspension rod.
Detailed description of the invention
In Fig. 1, combustor nozzle (4) passes through kiln crown suspended block (5), in the vitreous humour inserted above (3) of vitreous humour (3).By combustor nozzle (4), gaseous fuel and gaseous oxidant each or are injected after mixing in vitreous humour (4), make its (4) burning in vitreous humour, high-temperature gas agitation vitreous humour (4) produced, and major part heat is passed to vitreous humour (4) and batch, make frit melt rapidly homogenizing.
It is severely eroded to prevent the distance between kiln crown and metal level from approaching rear ceiling brick, the lost of life, being designed as by kiln crown can the most more new construction, its specific practice is: hung on track (being not drawn in figure) by suspension rod (6) hanging wheel by kiln crown suspended block (5), form the horizontal furred ceiling of moveable kiln, make kiln crown suspended block (5) kiln transversely can easily entire row traversing；The kiln crown suspended block (5a) newly supplemented joined the horizontal furred ceiling of moveable kiln from the side that kiln crown is horizontal and pushes opposite side to, the old kiln crown suspended block (5b) being etched released from opposite side simultaneously and unload；Thus kiln crown suspended block can be updated the most continuously.
Claims (5)
1. combustor nozzle new method of submerged combustion fusion cast glass liquid on liquid, it is characterized in that: by kiln crown, breastwork or pool wall by combustor nozzle in vitreous humour vitreous humour inserted above, by combustor nozzle, gaseous fuel and gaseous oxidant each or are injected in vitreous humour after mixing, it is made to burn in vitreous humour, the high-temperature gas agitation vitreous humour produced, and major part heat is passed to vitreous humour and batch, make frit melt rapidly homogenizing.
A kind of combustor nozzle the most according to claim 1 is the new method of submerged combustion fusion cast glass liquid on liquid, it is characterized in that: in order to prevent elongated combustor nozzle deformation and breakage, its length must be shortened, its solution is: greatly reduces the distance between kiln crown and the metal level around at combustor nozzle place, is even immersed under vitreous humour surface by its kiln crown lower surface.
A kind of combustor nozzle the most according to claim 2 is the new method of submerged combustion fusion cast glass liquid on liquid, it is characterized in that: be severely eroded to prevent the distance between kiln crown and metal level from approaching rear ceiling brick, the lost of life, being designed as by kiln crown can the most more new construction, its architectural feature is: by kiln crown suspended block hanging wheel hanging form the horizontal furred ceiling of moveable kiln in orbit, make kiln crown suspended block kiln transversely can easily entire row traversing；The kiln crown suspended block newly supplemented joined the horizontal furred ceiling of moveable kiln from the side that kiln crown is horizontal and pushes opposite side to, the old kiln crown suspended block being etched released from opposite side simultaneously and unload；To ensure that kiln crown suspended block can update the most continuously.
A kind of kiln crown structure that can update continuously the most according to claim 3, is characterized in that: this horizontal ceiling structure of moveable kiln is used for the glass furnace of surface heating.
A kind of combustor nozzle the most according to claim 1 is the new method of submerged combustion fusion cast glass liquid on liquid, it is characterized in that: in order to reduce combustion gas flow the fusion temperature of reinforcing glass liquid and intensity, and described gaseous oxidant uses oxygen-enriched or pure oxygen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510010798.2A CN105819669A (en) | 2015-01-09 | 2015-01-09 | Novel method for melting glass liquid through immersion and combustion on glass liquid by jet pipe of combustor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510010798.2A CN105819669A (en) | 2015-01-09 | 2015-01-09 | Novel method for melting glass liquid through immersion and combustion on glass liquid by jet pipe of combustor |
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| CN105819669A true CN105819669A (en) | 2016-08-03 |
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| CN201510010798.2A Pending CN105819669A (en) | 2015-01-09 | 2015-01-09 | Novel method for melting glass liquid through immersion and combustion on glass liquid by jet pipe of combustor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114105447A (en) * | 2021-12-29 | 2022-03-01 | 中国建材国际工程集团有限公司 | Glass liquid channel structure with variable cross section |
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2015
- 2015-01-09 CN CN201510010798.2A patent/CN105819669A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114105447A (en) * | 2021-12-29 | 2022-03-01 | 中国建材国际工程集团有限公司 | Glass liquid channel structure with variable cross section |
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Application publication date: 20160803 |
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| WD01 | Invention patent application deemed withdrawn after publication |