CN206529399U - A kind of glass melter of submerged combustion heating - Google Patents

Abstract

A kind of glass melter of submerged combustion heating, it is characterized in that：On the refractory material for constituting glass melter kiln bottom, gather and be arranged with large number of passage, they are communicated with extraneous air delivering pipeline；Combustion gas and combustion-supporting qi leel are not sent into the glass metal in molten bath by these passages with jet or bubbling mode；Wherein it is separated by certain spacing between combustion gas stomata and combustion-supporting gas stomata, combustion gas and combustion-supporting gas is independently sent into by respective pipeline in kiln；In glass precursor solution upper surface, all the time covered with one layer of raw materials batch layer fusion, the combustion product gases in glass metal are escaped through this bed of material, and by with being drained after bed of material heat exchange cooling；Imperfect combustion combustion gas in combustion product gases, meets oxygen combustion, and give raw materials batch heating in glass metal surface and raw materials batch layer；As raw materials batch layer bottom constantly melts, top layer constantly spreads the new bed of material, and melting furnaces just can continuously produce required glass metal.

Description

A kind of glass melter of submerged combustion heating

Technical field

The glass melter of glass melter, particularly submerged combustion heating.

Background technology

At present, surface heated method is used with fuel continuous melting glass metal.It has it is several be difficult to overcome lack Point：One is that the thermal efficiency is relatively low, and thermal losses is serious；Two be that melting rate is relatively low；Three be fuel gas temperature height, the stream of melting tank combustion space It is fast big, very fast is corroded to kiln refractory material, kiln service life is reduced.In order to save the energy, reduce and discharge and reduce into This simultaneously improves kiln service life, is all exploring more effective heating means instead of surface heating, such as submerged combustion both at home and abroad And heated by electrodes.

But, so far, so-called submerged combustion is to insert gaseous fuel combustion device in kiln from kiln bottom, makes the useless of burning Gas is injected directly into the glass metal of molten bath with high temperature and high speed, stirs glass metal, and most of heat is transmitted into glass metal and cooperation Material, makes frit melt rapidly.

This method not only can be such that the heat of burning gases is fully absorbed by glass metal, and heat loss is small, and melting rate is high, energy-conservation Effect is very notable（The melting rate of submerged combustion method is introduced up to 9 ~ 10 ton/square metre days, per kilogram glass metal heat by foreign countries Consumption is below 1000 kilocalories）.And because high-temperature gas is seethed, stirring action is risen to glass metal, makes the glass metal in pond more equal It is even.Again because the EGT for leaving glass metal is basic identical with the temperature of watch crystal liquid in molten bath, thus reduce melting furnaces The temperature in space, extends the service life of kiln.

Submerged combustion method has a many advantages, therefore U.S., day, method, the E Deng states including China are all successively carried out In-depth study and experiment, but up to the present do not succeeded in large-scale industrial application.

The reason is that the method for this traditional submerged combustion has insoluble problem：1st, clear up problems：To When combustion gas and air mixture are sprayed into glass metal (combustion product), the operating condition of nozzle is relatively difficult, only mixed gas When consumption is substantially exceeded with air or dry drum armful, founding can just be normally carried out.Because the fierce bubbling of glass metal is seethed, make glass Glass liquid show bubble, the minute gas field trash of itself significantly increases, therefore, makes glass metal clarification highly difficult.2nd, fuel is asked Topic：Occlusion or the blub composition being mingled with do not participate in the inactive gas of reaction, that is, fuel combustion mainly in the melt The nitrogen discharged in journey, such as：It is nitrogenous with the combustion product produced by the submerged combustion nozzle of the air gas mixture of natural gas one Amount is more than 70%, and general combustion method then allows nitrogen content in combustion product to be no more than 30%, for plate glass, then Preferably no more than 10% (weight).Therefore, this is also the main cause more than air inclusions.Can effectively it be solved with pure oxygen burning technique Certainly above-mentioned two problems, but be that flame temperature is too high the problem of bring, nozzle deteriorates too fast, can not compensate or change again. 3、 Combustor problem：Because burner is submerged in the melt, its quality, riding position and operational control are all required than ever Strictly, otherwise, once burning is broken down, glass metal is entered its interior solidification of people, then can not be continuing with.In addition, working as glass metal When reaching certain depth, not enough, flame does not enter glass metal then to the impulse force of nozzle, and refractory material sprays from the side.Qinhuangdao glass Glass research institute just ran into test such case.Reducing nozzle diameter can solve the above problems, but can cause the combustion heat The problem of amount is not enough.4th, refractories：Because glass metal is acutely seethed in kiln, superstructure space can be sputtered The glass metal come is washed away, the need for general silica brick and chrome brick does not adapt to this melting furnaces.When in the multiple burnings of bottom of pond setting During nozzle, it can also weaken the intensity of refractory material.In addition, the natural gas that burnt such as in liquation is (to feed the 7- of total amount in kiln 10%), heat exchange can be greatly reinforced.The amount of natural gas directly burnt in melting furnaces is improved too much, and refractory material is tight by erosion Weight.5th, the fluctuation of viscosity of glass metal, bleed pressure and flow, the influence to mixture pressure and spray speed is very big, is difficult to it Long term constant it is maintained in glass metal and burns, easily causes de- fire or tempering phenomenon.6th, the most key the problem of is：Due to Limited by material, burner (especially bocca) is easily lost, the life-span is shorter, and can not both compensate or be difficult to change.Institute Although by long-term research and experiment, to be difficult to put into practical application.And heated by electrodes is the problem of exist：Melting rate It is low；Heating surface (area) (HS is limited；Electrode is expensive and changes difficult and oxidizable；Need to first with other mode of heatings by glass melting into liquid Afterwards, can electrified regulation, add equipment and process costs.Therefore.The glass electric melting of current heated by electrodes is only used for height The production of the small-scale product such as Pyrex, opal glass.

The content of the invention

To solve the above problems, the invention provides a kind of glass melter of submerged combustion heating, it is characterized in that：Constituting On the refractory material of glass melter kiln bottom, gather and be arranged with large number of passage, they are communicated with extraneous air delivering pipeline； Combustion gas and combustion-supporting qi leel are not sent into the glass metal in molten bath by these passages with jet or bubbling mode；Wherein combustion gas stomata It is separated by certain spacing between combustion-supporting gas stomata, combustion gas and combustion-supporting gas is independently sent into by respective pipeline in kiln；Combustion gas Rise the excessive bubble that half mixed half combustion is met and formed in expansion process inside glass metal with combustion-supporting gas, then proceed to rise, Reach and be thoroughly mixed burning, and form high-temperature flue gas bubble；So as to which heat to be transmitted to the liquation of surrounding, fusing and homogenizing material are reached Purpose；In glass precursor solution upper surface, all the time covered with one layer of raw materials batch layer fusion, the combustion product gases warp in glass metal This bed of material is escaped, and by with being drained after bed of material heat exchange cooling；Imperfect combustion combustion gas in combustion product gases, on glass metal surface And oxygen combustion is met in raw materials batch layer, and give raw materials batch heating；As raw materials batch layer bottom constantly melts, Top layer constantly spreads the new bed of material, and melting furnaces just can continuously produce required glass metal.

The refractory material of above-mentioned composition glass melter kiln bottom is bottom of pond syphon and/or the fire resisting being laid on above bottom of pond syphon Material ramming layer.

The glass melter of above-mentioned submerged combustion heating is broadly divided into melting tank and depositing reservoir two parts, in the resistance to of their kiln bottoms On fiery material, gather and be arranged with large number of passage；Wherein, the passage at melting tank bottom blasts high frequency bubble or jet Gas, so as to form big heat, high-intensity combustion；The passage at depositing reservoir bottom blasts low frequency bubble, thus form small heat, it is low Intensity is burnt, and the micro-bubble in glass metal is clarified.

By kiln bottom refractory material passage arrangement density and/or outlet size and the difference of air pressure, on horizontal area By melting tank and depositing reservoir from center to surrounding, central high temperature area, low temperature transition zone and the protection of cisterna ambiens wall air curtain are respectively divided into Area（Referring to：Melting furnaces pool wall air curtain Protection Code, number of patent application：201610088619.1）, with the thermal convection current of reinforced glass liquid, from And reach the purpose for being homogenized glass metal.

The global shape of melting furnaces, can be designed as cylindrical shape high by the resistance to overturning of homogenizing and kiln in view of glass metal Stove（Similar to blast furnace）Shape.The outer wall of body of heater can be designed as metal shell.This metal shell can be by many annulus Shape metal tube combines composition in the height direction.Refractory masses are provided with the inside of metal shell（It is not drawn into figure）.Can be Cooling fluid is passed through in circular ring metal pipe, to ensure the use safety and service life of body of heater.It is provided with and feeds intake in Top of BF Mouthful and go out flue；Liquid-filling pool and dog-hole are provided with blast furnace bottom.

Above-mentioned combustion-supporting gas can be compressed air, oxygen-enriched or pure oxygen gas；Combustion gas can be natural gas, coal gas, hydrogen air-liquid Liquefied oil gas etc..

Above-mentioned raw materials coordinate the bed of material thickness control combustion product gases can low pressure effusion be advisable.

Compared with other conventional glass furnaces, the glass melter of this submerged combustion heating is beneficial in that：1st, kiln Stove and combustion apparatus are simple in construction, and service life is long；2nd, method is reliable, and burning is complete；3rd, melting efficiency is high, liquation homo-effect It is good；4th, the erosion to refractory material is small；5th, heat-exchange time of the high-temperature flue gas in liquation and raw materials batch layer is long, heat utilization efficiency It is high；6th, it is suitable for pure oxygen high-temp combustion, can not only melts high-melting-point material, and exhaust gas volumn is greatly reduced, beneficial to liquation Clarification；There is very great economic and social benefit for energy-saving and emission-reduction.

Brief description of the drawings

Fig. 1 is the schematic cross-section of one of the embodiment of the present invention.

Fig. 2 is two schematic cross-section of the embodiment of the present invention.

Fig. 3 is three schematic top plan views of the embodiment of the present invention.

Fig. 4 is the stereoscopic structure chart of the 4 of the embodiment of the present invention.

Fig. 5 is Fig. 4 perspective cross section structure chart.

1. kiln bottom refractory material bottom of pond syphon in figure, 2. refractory material air-vents, 3. air delivering pipelines, 4. combustion gas are steeped or helped Combustion gas is steeped, 5. glass metals, 6. raw materials batch layer, 7. kiln bottom refractory material rammings layers, 8. kiln pool walls, 9. melting tanks with Depositing reservoir upper strata separates, 10. melting tank central high temperature areas, 11. melting tank low temperature transition zones, and 12. melting tank cisterna ambiens wall air curtains are protected Protect area, 13. depositing reservoir central high temperature areas, 14. depositing reservoir low temperature transition zones, 15. depositing reservoir cisterna ambiens wall air curtain protection zones, 16. Dog-house, 17. go out flue, 18. circular ring metal pipes, 19. liquid-filling pools, 20. dog-holes.

Embodiment

In Fig. 1, Fig. 2, glass melter kiln bottom refractory material bottom of pond syphon 1 or/and kiln bottom refractory material ramming layer 7 are being constituted On, gather and be arranged with large number of passage 2, they are communicated with extraneous air delivering pipeline 3；Combustion gas and combustion-supporting qi leel do not pass through These passages 3 are sent into the glass metal 5 in molten bath with jet or bubbling mode；Phase wherein between combustion gas stomata and combustion-supporting gas stomata Every certain spacing, combustion gas and combustion-supporting gas is set independently to be sent into by respective pipeline in kiln；Combustion gas and combustion-supporting gas are in glass metal 7 Portion rises the excessive bubble that half mixed half combustion is met and formed in expansion process, then proceedes to rise, reaches and be thoroughly mixed burning, and Form high-temperature flue gas bubble；So as to which heat to be transmitted to the liquation of surrounding, the purpose of fusing and homogenizing material is reached；In glass precursor solution 7 Upper surface, all the time covered with one layer of raw materials batch layer 6 fusion, the combustion product gases in glass metal 7 are escaped through this bed of material, and are led to Cross with being drained after bed of material heat exchange cooling；Imperfect combustion combustion gas in combustion product gases, in the surface of glass metal 7 and raw materials batch Oxygen combustion is met in layer 6, and gives raw materials batch heating；As raw materials batch 6 bottom of layer constantly melt, top layer is constantly spread The new bed of material, melting furnaces just can continuously produce required glass metal.

In Fig. 3, by the passage 2 on kiln bottom refractory material bottom of pond syphon 1 or/and kiln bottom refractory material ramming layer 7, its Density of arranging and/or outlet size and the difference of air pressure, by melting tank and depositing reservoir from center to surrounding on horizontal area, point Melting tank central high temperature area 10, melting tank low temperature transition zone 11, melting tank cisterna ambiens wall air curtain protection zone 12, depositing reservoir are not divided into Central high temperature area 13, depositing reservoir low temperature transition zone 14, depositing reservoir cisterna ambiens wall air curtain protection zone 15, with the hot right of reinforced glass liquid Stream, so as to reach the purpose for being homogenized glass metal.

In Fig. 4, Fig. 5, it is contemplated that the homogenizing of glass metal and the resistance to overturning of kiln, the global shape of melting furnaces is designed as Cylindrical shape blast furnace（Similar to blast furnace）Shape.The outer wall of body of heater is designed as metal shell.This metal shell can be by being permitted Many circular ring metal pipes 18 combine composition in the height direction.Refractory masses are provided with the inside of metal shell（Do not drawn in figure Go out）.Cooling fluid can be passed through in circular ring metal pipe 18, to ensure the use safety and service life of body of heater.In high furnace roof Portion is provided with dog-house 16 and goes out flue 17；Liquid-filling pool 19 and dog-hole 20 are provided with blast furnace bottom.

Claims (6)

1. a kind of glass melter of submerged combustion heating, it is characterized in that：On the refractory material for constituting glass melter kiln bottom, gather Large number of passage is arranged with, they are communicated with extraneous air delivering pipeline；Combustion gas and combustion-supporting qi leel are not ventilated by these Hole is sent into the glass metal in molten bath with jet or bubbling mode；Wherein be separated by between combustion gas stomata and combustion-supporting gas stomata it is certain between Away from；In glass precursor solution upper surface, all the time covered with one layer of raw materials batch layer fusion.

2. a kind of glass melter of submerged combustion heating according to claims 1, it is characterized in that：Above-mentioned composition glass melts The refractory material of kiln kiln bottom is bottom of pond syphon and/or the refractory material ramming layer being laid on above bottom of pond syphon.

3. a kind of glass melter of submerged combustion heating according to claims 1, it is characterized in that：Above-mentioned submerged combustion adds The glass melter of heat is broadly divided into melting tank and depositing reservoir two parts, on the refractory material of their kiln bottoms, and gathering is arranged with Large number of passage；Wherein, the passage at melting tank bottom blasts high frequency bubble or Gas Jet, thus formed big heat, High-intensity combustion；The passage at depositing reservoir bottom blasts low frequency bubble, so that small heat, low-intensity burning are formed, and by glass metal In micro-bubble clarification.

4. a kind of glass melter of submerged combustion heating according to claims 1, it is characterized in that：Pass through kiln bottom fire proofed wood Passage arrangement density and/or outlet size and the difference of air pressure is expected, by melting tank and depositing reservoir from center on horizontal area To surrounding, central high temperature area, low temperature transition zone and cisterna ambiens wall air curtain protection zone are respectively divided into the thermal convection current of reinforced glass liquid, So as to reach the purpose for being homogenized glass metal.

5. a kind of glass melter of submerged combustion heating according to claims 1, it is characterized in that：In view of glass metal The resistance to overturning of homogenizing and kiln, cylindrical shape blast furnace shape is designed as by the global shape of melting furnaces；The outer wall of body of heater is designed For metal shell, refractory masses are provided with the inside of metal shell.

6. a kind of glass melter of submerged combustion heating according to claims 5, it is characterized in that：Above-mentioned metal shell by Many circular ring metal pipes combine composition in the height direction.