CN213060636U - Combustion system for glass kiln and glass kiln - Google Patents
Combustion system for glass kiln and glass kiln Download PDFInfo
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- CN213060636U CN213060636U CN202021862674.XU CN202021862674U CN213060636U CN 213060636 U CN213060636 U CN 213060636U CN 202021862674 U CN202021862674 U CN 202021862674U CN 213060636 U CN213060636 U CN 213060636U
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Abstract
The utility model discloses a combustion system and glass kiln for glass kiln, including a plurality of burning spray guns, the burning spray gun is established in the inside melting bottom of the pool of glass kiln, and does not establish on the lateral wall of glass kiln. Because the flame sprayed by the combustion system directly heats the glass batch in the glass batch, the volatilization amount of the volatile raw materials can be reduced, and the content of each element in the finally formed glass product is ensured to be in the design range. The combustion products are generated in the glass batch, which is beneficial to clarifying the molten glass, can reduce the addition amount of the clarifying agent, even does not add the clarifying agent, and can reduce the preparation cost of the glass on the premise of ensuring the melting and clarifying quality of the molten glass.
Description
Technical Field
The utility model relates to a glass makes technical field, especially relates to a combustion system and uses this combustion system's glass kiln for glass kiln.
Background
The existing air combustion-supporting glass kiln comprises opposite side walls (namely breast walls), wherein a plurality of combustion spray guns are arranged on the side walls; a main crown (i.e. crown) arranged at the top of the side wall and used for connecting the opposite side walls so as to form the top of the glass furnace; and a melting tank arranged at the bottom in the kiln and used for containing molten glass. When the glass kiln is combusted, air preheated to a certain temperature (generally less than 1000 ℃) by the regenerator at the side is discharged into the glass kiln through the small grate and meets fuel sprayed by a combustion spray gun in a flame space, high temperature is generated by combustion, combustion products (namely smoke) enter the regenerator at the opposite side and then are discharged through the flue, heat in the smoke is stored by the checker bricks of the regenerator at the opposite side, the air for supporting combustion enters the regenerator at the side after the smoke is discharged through the flue, the heat collected in the smoke is used for preheating combustion-supporting air by the checker bricks of the regenerator, the preheated air is discharged into the glass kiln through the small grate at the side and meets the fuel sprayed by the combustion spray gun in the flame space, high temperature is generated by combustion, and the combustion products enter the regenerator at the opposite side and then are discharged through the flue. The glass kiln combustion system heats the glass batch in the melting tank in the kiln through circulating combustion in such a way, so that the glass batch is melted into molten glass.
In the existing air combustion-supporting glass kiln, combustion spray guns are only arranged on the side walls (and are symmetrically arranged), the combustion spray guns are distributed on the opposite side walls in pairs, and the gun heads face a glass melting tank. The combustion spray gun usually adopts a reversing combustion mode, namely, the combustion spray gun at one side (as a normal combustion side) is firstly opened, the combustion spray gun at the other side (at the moment, the upper part of the molten glass at the position is not covered by flame and is used as a flameless combustion side) is closed, and the glass melting tank is heated for a period of time; then, reversing, namely: and closing the combustion spray gun at the side, opening the combustion spray gun at the other side, repeating the steps, and generally heating for about 20-30min and reversing once.
When the existing glass kiln is used for producing refractory glass, such as high-alumina glass, high-borosilicate glass and microcrystalline glass, the melting and clarification of the glass are very difficult, and the problems need to be solved by increasing the melting temperature, adopting a special melting mode and adding a clarifying agent into a glass batch. The increase of the melting temperature can aggravate the burning loss degree of flame to the breast wall, crown and the like in the glass kiln, so that the service life of the glass kiln is reduced; the special melting mode can reduce the safety of the glass kiln; the addition of fining agents increases the glass production cost.
Meanwhile, because the melting temperature of the refractory glass is high, and the combustion spray guns in the combustion systems arranged on the two side walls of the existing glass kiln are alternately combusted, two smoke outlets are matched; in order to ensure the stability of the temperature of the glass liquid, the length of the combustion flame exceeds the central area of the glass melting tank, so that the flames on the two sides cover the central area of the glass liquid, and the flames seriously scour and burn the breast wall and the crown of the area, thereby greatly reducing the service life of the glass kiln. In addition, the central area of the molten glass is repeatedly heated, and the temperature difference between the central area and the peripheral area is large, so that the molten glass is not uniformly mixed, the melting quality is poor, the produced glass has more defects, and the quality of a glass product is influenced.
When the conventional glass kiln is used for producing the volatile glass, such as borate glass, phosphate glass and high-alkali silicate glass, because the raw materials of the glass have easily volatile raw materials, the conventional glass kiln can repeatedly heat the central area of the melting tank, so that the temperature of the central area is high, the volatilization amount of the volatile glass raw materials is increased, the content of the volatile raw materials in a glass product cannot meet the design requirement, and the quality of the glass is influenced. In order to ensure the content of the volatile raw materials in the finally formed glass product, the dosage of the volatile raw materials can only be increased in the batching process before melting so as to compensate the volatile amount of the raw materials during melting. Not only can increase the raw materials cost like this, volatile raw materials get into the flue gas after volatilizing, still can lead to solid particle's concentration to increase in the flue gas, cause the jam of exhaust fume channel, increase the load that the flue gas removed dust, improve glass's preparation cost.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the technical defect who exists among the prior art, the first aspect provides a guarantee that glass product quality's prerequisite reduces glass manufacturing cost's combustion system for glass kiln, including a plurality of burning spray guns, the burning spray gun is established in the inside melting tank bottom of glass kiln, and does not establish on the lateral wall of glass kiln.
The gun head of the combustion spray gun is vertically upward and is vertical to the bottom of the melting tank.
The combustion spray gun is 4-9 pieces/m2The area of the bottom of the melting tank is uniformly arranged.
The interval between two adjacent combustion spray guns is 40-90 cm.
The distance between the combustion spray gun and the wall of the melting tank is more than or equal to 30 cm.
In a second aspect, a glass kiln is provided, which comprises a kiln side wall and a melting tank, and further comprises the combustion system for the glass kiln.
The fuel in a combustion spray gun of the combustion system is natural gas, liquefied gas or heavy oil, and the combustion-supporting medium in the combustion spray gun is oxygen; the combustion dosage of the combustion spray gun is 30-150Nm3/h。
The flame height of a combustion spray gun arranged in the combustion system does not exceed 3/4 of the set molten glass depth.
The glass furnace also comprises a crown which is positioned above the melting tank and forms the top of the glass furnace, and the ratio of the height of the crown in the vertical direction to the width of the crown in the horizontal direction is 1/10-1/6.
The furnace also comprises a smoke outlet which is only arranged at the upper part of one side of the side wall of the furnace.
The area of the smoke outlet is 1/20-1/10 of the melting size of the kiln.
The utility model provides a combustion system for glass kiln changes the burning spray gun that will set up originally on the kiln lateral wall and establishes in melting bottom of the pool for flame is from melting bottom of the pool blowout, upwards burns heating glass batch, makes its melting become glass liquid. Because the flame directly heats the glass batch in the glass batch, the heat conduction from top to bottom is avoided, the temperature above the glass liquid is reduced, the volatilization amount of the volatile raw material at the position can be reduced for the volatile glass, and the content of each element in the finally formed glass product is ensured within the design range. Because the volatilization amount of the raw materials is reduced, the addition amount of the volatile raw materials does not need to be increased, and the preparation cost of the glass is reduced; and the amount of the volatilized raw materials entering the flue gas is reduced, the concentration of solid particles in the flue gas is reduced, and the load of flue gas dust removal is reduced. For refractory glass, combustion products are generated in the glass batch, the discharge process of the combustion products is beneficial to clarifying molten glass, the addition amount of a clarifying agent can be reduced, even no clarifying agent is added, and the preparation cost of the glass can be reduced on the premise of ensuring the melting and clarifying quality of the molten glass.
Meanwhile, in the glass kiln of the utility model, because the flame is in the glass liquid rather than above the liquid level of the glass liquid, a combustion system, a regenerator, a small furnace and the like are not required to be arranged on the side wall, the heights of the side wall and the crown can be reduced, and the structure of the glass kiln is more compact; and the flame space above the glass liquid surface does not need to be burnt, so that the flame scouring and burning loss degree of the side wall and the crown is greatly reduced, and the service life of the glass kiln is prolonged; moreover, the fire-resistant grade of the materials used for the side wall and the crown can be reduced, and the investment cost and the operation and maintenance cost of the glass kiln are reduced.
Furthermore, the utility model discloses a glass liquid is not by the region of repeated heating in the glass kiln, and the whole difference in temperature of glass liquid is little, and glass liquid mixes more evenly, melts the high quality, and the glass defect of producing is few, and the yield of glass product improves.
Drawings
FIG. 1 is a schematic cross-sectional view of the inside of a glass furnace according to the present invention;
FIG. 2 is a schematic view of a top view of the combustion system for a glass furnace according to the present invention;
in the figure, 1 big arch, 2 feed inlets, 3 melting tank wall, 4 smoke outlet, 5 throat, 6 combustion spray gun, 7 flame, 8 molten glass, 9 melting tank bottom and 10 molten glass surface line.
Detailed Description
The existing glass kiln mainly uses air as combustion-supporting gas and comprises opposite side walls (namely a breast wall); a main crown (i.e. crown) arranged at the top of the side wall and used for connecting the opposite side walls so as to form the top of the glass furnace; and a melting tank arranged at the bottom in the kiln and used for containing molten glass; the combustion system is arranged on the side wall. When the existing glass kiln is used for heating glass batch, air preheated to a certain temperature (generally less than 1000 ℃) by the regenerator at the side is discharged into the glass kiln through the small grate and meets fuel in a flame space, high temperature is generated by combustion, combustion products (namely smoke) enter the regenerator at the opposite side through the smoke outlet arranged on the side wall and then are discharged through the flue, heat in the smoke is stored by the checker bricks of the regenerator at the opposite side, the air for supporting combustion enters the regenerator at the side after the smoke is discharged through the flue, the heat collected in the smoke is used for preheating combustion-supporting air by the checker bricks of the regenerator, the preheated air is discharged into the glass kiln through the small grate at the side and meets the fuel in the flame space, high temperature is generated by combustion, and the combustion products enter the regenerator at the opposite side through the smoke outlet arranged on the side wall and then are discharged through the flue. The glass kiln combustion system heats the glass batch in the melting tank in the kiln through circulating combustion in such a way, so that the glass batch is melted into molten glass.
The combustion system of the existing glass kiln comprises combustion spray guns arranged on the side walls (and symmetrically arranged), the combustion spray guns are distributed on the opposite side walls in pairs, and the gun heads face a glass melting tank. The combustion spray gun usually adopts a reversing combustion mode, namely, the combustion spray gun at one side (as a normal combustion side) is firstly opened, the combustion spray gun at the other side (at the moment, the upper part of the molten glass at the position is not covered by flame and is used as a flameless combustion side) is closed, and the glass melting tank is heated for a period of time; then, reversing, namely: closing the combustion spray gun at one side, opening the combustion spray gun at the other side, repeating the steps, generally heating for about 20-30min, and reversing once; the normal combustion side is responsible for heating the molten glass, and the flameless combustion side is responsible for discharging combustion products generated by combustion at the normal combustion side out of the glass furnace, and is also called as the smoke generation side. After the combustion spray gun at one side is started, the side is covered by flame, the temperature of the kiln at the side is rapidly increased, and the temperature of the kiln at the other side is slowly increased due to no flame covering, so that the temperature distribution of the kiln is uneven; in order to ensure the temperature of the molten glass is stable, it is necessary to have a long combustion flame length, exceeding that of the glass melting bathIn the central area, the flames on the two sides can cover the central area of the molten glass, so that the temperature difference between the central area of the kiln and the peripheral area of the kiln is increased, and the temperature distribution of the kiln is uneven. The temperature of the furnace is unevenly distributed, so that the temperature difference of molten glass in different areas of the melting tank is large, the molten glass formed after the glass batch is melted is unevenly mixed, the melting quality of the glass is affected, and the produced glass has more defects; meanwhile, the reaction speed of nitrogen and oxygen at high temperature is accelerated due to large temperature difference, and the amount of generated nitrogen oxides is increased, so that NO is generatedXThe emission concentration and the total amount of emission increase.
Meanwhile, the flame for heating is above the liquid level of the molten glass, the molten glass at the liquid level is directly heated, and the heat is transferred to the molten glass at the bottom by the molten glass at the upper part; in order to ensure that the temperature of the bottom glass liquid can reach the melting temperature, the temperature of the upper glass liquid is much higher than that of the bottom glass liquid, so that the volatilization amount of the volatile raw materials in the upper glass liquid is increased, the addition amount of the volatile raw materials is increased to compensate the volatilization amount during batching, and the glass preparation cost is increased; the volatilized glass raw materials are discharged along with the flue gas, and the load of flue gas treatment is increased.
In addition, the combustion spray guns on both sides are in a closed state within 30s-2min between each reversing of the combustion system, namely, no flame is burnt on both sides, so that the temperature of the side wall and the crown is suddenly increased or decreased sometimes, the refractory bricks forming the side wall and the crown are easy to burst, and the service life of the glass kiln is shortened.
On the basis, the utility model provides a combustion system for glass kiln for melt glass batch into glass liquid. The combustion system changes the combustion spray gun at the bottom of the melting tank, and simultaneously adjusts the flame length of the combustion spray gun to realize the combustion of flame inside the glass batch, heat the glass batch inside the glass batch and avoid the continuous heating of the central area of the liquid level of the glass liquid, thereby realizing the NO in the flue gas of the glass kilnXSignificant reduction in emission concentration and total amount of emissions.
For volatile glass, the product of the volatile glass needs to contain diboron trioxide (B)2O3) Phosphorus pentoxide (P)2O5) Sodium oxide (Na)2O), potassium oxide (K)20) Lithium oxide (Li)2O), etc., and therefore boric acid, borax, ammonium dihydrogen phosphate, sodium carbonate, sodium nitrate, potassium carbonate, potassium nitrate, lithium carbonate, etc., which can provide these substances, need to be incorporated into the glass batch as a glass raw material. The glass raw materials have the property of easy volatilization, and the condition of overhigh local temperature can occur in the existing glass kiln, so that the volatile raw materials are volatilized in large quantity, the composition and the content of elements in the finally obtained glass product are changed, the design requirement cannot be met, and the yield of the glass product is seriously influenced.
Because the utility model discloses combustion system spun flame is inside the glass liquid, and the heat is conducted or is conducted from bottom to top at the inside level of glass liquid, and not conduct for lower part glass liquid by upper portion glass liquid, so the inside difference in temperature of glass liquid is little, glass liquid misce bene, and melting quality is high, and the glass defect of producing is few, and the yield of glass product improves. Although the volatile raw materials are volatilized in a heat conduction mode between the glass liquids, the volatile raw materials are conducted to the upper glass liquid in the process of volatilizing from bottom to top in a bubble mode, so that the temperature of the bubbles is reduced, the bubbles are cooled to be lower than the volatilization temperature, and the bubbles are condensed to be in a liquid state and are remained in the glass liquid, and the volatilization amount of the raw materials is reduced. In actual production, when the volatile raw materials exist in the glass raw materials, the volatilization amount of the volatile raw materials at normal melting and clarification temperatures is considered in the usage amount of the glass batch when the usage amount of the raw materials is designed, so that the designed element composition and content can be maintained in the prepared glass product as long as the condition that the volatilization acceleration of the volatile raw materials does not occur is ensured. The utility model discloses a do not exist in the glass kiln the condition of volatilizing with higher speed, consequently can guarantee that the constitution and the content of each element reach design value in the glass product.
For refractory glasses, additional fining agents and/or increased melting temperatures are required to solve the problem of difficulty in melting and fining. The utility model discloses combustion system heats glass batch with the mode of melting tank bottom blowout flame to regard it as the combustion mode (being called for short "end fever") of glass kiln, combustion products (carbon dioxide and vapor) are the gaseous state under this kind of mode, can volatilize to the kiln space above the glass liquid level from the glass liquid with the bubble form, combustion products can play the clarification effect to the glass liquid from the process of up discharging from the glass liquid down, not only can accelerate the clarification of glass liquid and arrange the bubble process, improve and melt and clarification quality, make the glass defect who produces reduce, the yield of glass product improves; the addition amount of the clarifying agent can be reduced, even the clarifying agent is not added, and the preparation cost of the glass is reduced.
In the bottom burning mode used by the combustion system, the glass liquid is arranged around the flame, all heat is directly conducted to the glass liquid (the glass liquid is arranged below the flame of the original glass kiln, the heat in other directions is not directly conducted to the glass liquid, the heat conduction efficiency is low), and the fuel combustion efficiency is improved; because of the adoption of oxy-fuel combustion and the little contact between fuel and air, NO in the combustion productsX、SOXAnd the concentration of dust and the like is reduced.
The utility model discloses combustion system's flame does not need the switching-over, consequently, can avoid because of the glass batch flying materials problem that the flame switching-over caused (during flame switching-over in the original glass kiln, flame can erode the glass batch of the top for the glass batch suspension is taken away by the flue gas in the air). In addition, because the condition of flame reversing does not exist, the flame in the glass kiln is continuously combusted, the temperature in the glass kiln can be maintained to be stable, the refractory bricks of the side wall, the crown and the like cannot be damaged by sudden temperature rise and drop, the flame is in the molten glass, the burning loss caused by the fact that the flame scours the side wall and the crown is avoided, and the service life of the glass kiln is prolonged.
The present invention will be described in more detail and further illustrated with reference to specific examples, which are not intended to limit the present invention in any way.
The utility model provides a combustion system for glass kiln, its structure is shown in figure 2, has cancelled the burning spray gun of establishing originally at the lateral wall, changes the burning spray gun and establishes in melting tank bottom portionNamely: the bottom 9 of the melting tank is provided with a plurality of combustion spray guns 6, and the gun heads of the combustion spray guns 6 face to the right upper part, namely face to the inside of the melting tank and are vertical to the bottom 9 of the melting tank. And a fuel inlet and an oxygen inlet are arranged at the tail of the combustion spray gun 6, and the fuel and the oxygen meet at the head of the combustion spray gun to combust to generate flame, so that the glass batch is heated and melted into molten glass. The combustion spray guns are generally arranged according to the area of the bottom 9 of the melting tank, and 4-9 pieces/m2The distance between two adjacent spray guns is 40-90cm, and the distance between the combustion spray gun and the wall 3 of the melting tank is more than or equal to 30 cm. The fuel in the combustion lance can be selected from natural gas, liquefied gas or heavy oil, and the fuel consumption is 30-150Nm3H; the combustion-supporting medium can only be pure oxygen.
The glass kiln structure using the combustion system is shown in figure 1, the side wall of the glass kiln structure is not provided with the combustion system, the lower part of the glass kiln structure is square, a melting tank is built, glass batch is contained in the melting tank, and a crown 1 is built at the top of the wall 3 of the melting tank and used for connecting a group of opposite wall 3 of the melting tank. The crown 1 forms the top of the glass furnace and adopts an arch shape, and the arch rise (the ratio of the height of the vertical direction of the crown to the horizontal width of the crown) is 1/10-1/6. The upper part of one side of the melting tank wall 3 is provided with a feed inlet 2, and the height H of the feed inlet 2 from the arch top of the arch 1120-50cm, the feed inlet 2 is positioned above the set glass melt line 10 and is at a distance H from the set glass melt line 102Is 50-80 cm. The upper part of the other side (the side opposite to the side of the charging opening 2 and only on the side) of the melting tank wall 3 is provided with a smoke outlet 4, and the lower part is provided with a throat 5. The area of the smoke outlet 4 is 1/20-1/10 of the melting size of the kiln (the melting size of the kiln is the product of the length and the width of the kiln), and the smoke outlet 4 is square, so that the building and the maintenance of the smoke outlet 4 are facilitated. The wall and the bottom of the melting tank are both made of No. 33 AZS electric melting refractory material (electric melting ZrO) without shrinkage cavity2-Al2O3-SiO2Material of which ZrO2The mass percentage of the refractory material is 33 percent, the shrinkage-hole-free pouring is a pouring method of the fused refractory material, the structure of the fused refractory material is compact and uniform, the fused refractory material is purchased from Henan Ruitake practical Co., Ltd, and the 41# shrinkage-hole-free pouring AZS fused refractory material (purchased from Henan Ruitake practical Co., Ltd) is adopted around a combustion spray gunKokushigaku co., ltd), the crown 1 of the glass kiln was made of 33# plain cast AZS fused refractory (available from helan rui tai kokuyaku co., ltd).
The melting tank bottom, the melting tank wall and the crown of the glass kiln are all densely built by refractory bricks, namely: only the refractory bricks are used for building each other, no sealing material is used between the bricks, and all surfaces of the refractory bricks are polished to be smooth, so that the glass liquid is prevented from passing through when the temperature is too high, and safety accidents are prevented. The charge door and the exhaust port are also obtained by laying refractory bricks, and adopt a semi-closed state, namely: the feed inlet is opened only when feeding in raw materials, closes after adding glass batch, and the exhaust port is opened when burning for the flue gas discharge that produces with burning, and the exhaust port closes when not burning, reduces energy loss.
When the combustion system for the glass kiln is used for heating glass batch, all the combustion spray guns 6 of the pool bottom 9 of the melting pool are firstly controlled to be simultaneously opened (instead of being alternately opened like the original glass kiln) for combustion. At the same time, the height of the flame 7 of the combustion lance 6 at the bottom 9 of the melting tank is adjusted so that the height of the flame 7 does not exceed 3/4 of the set molten glass depth, namely: the height of the flame 7 does not exceed 3/4 of the set molten glass height from bottom to top; the set depth of the molten glass is generally between 30 and 60 cm. After flame is adjusted, cullet with the same composition as a target glass product is added into a melting tank through a feeding port 2 arranged on a tank wall 3 of the melting tank, the cullet is heated and melted to be molten through a combustion spray gun 6, then mixed glass batch is added through the feeding port 2 to be heated, the cullet is melted to form molten glass 8, the molten glass 8 is continuously heated in the melting tank for clarification, and after the clarification is completed, the molten glass 8 is sent to the next procedure through a throat 5 (arranged on the tank wall 3 of the melting tank opposite to the feeding port). And combustion products and smoke generated in the heating process are discharged through a smoke outlet 4 arranged above the liquid flow hole 5.
Experiment on volatile glass:
respectively uses the prior glass kiln and the glass kiln respectively heats borate glass, phosphate glass and high-alkali silicate glass with the same quality (the heating is to heat the glass batch mixture from normal temperature to solid stateThe molten liquid, when the glass liquid does not contain the defects of bubbles, stones, lines and the like, the heating is completed), the fuel is natural gas, and the combustion-supporting gas is oxygen, and the results are shown in table 1. In table 1, A represents the existing glass kiln, B represents the glass kiln of the utility model, the volatile content refers to the mass percentage content of volatile matters in unit flue gas, and the unit of nitrogen oxide concentration is mg/m3Flue gas, fuel consumption in Nm3"/" indicates no volatilization or trace amount of volatilization, which is not detected.
TABLE 1 comparison of the effects of the existing glass kiln and the glass kiln of the utility model
As can be seen from the table 1, the glass melting temperature can be reduced by heating the glass batch in the glass kiln, so that the volatilization amount of the volatile raw materials is reduced, the amount of the volatile raw materials entering the flue gas is reduced, and the fuel consumption of unit glass liquid is obviously reduced by heating and melting; because no repeated heating area exists, the concentration of nitrogen oxide is reduced, the temperature difference in the molten glass is reduced, the melting quality of the glass is high, and the yield is remarkably improved.
Experiment on refractory glass:
experiment one:
use current glass kiln respectively with the utility model discloses the glass kiln heats same quality high alumina glass, borosilicate glass, microcrystalline glass respectively (the heating is with glass batch mixture from normal atmospheric temperature solid state heating to the melt liquid state, when the glass liquid does not contain defects such as bubble, calculus, lane, accomplishes for the heating), and the fuel is the natural gas, and combustion-supporting gas is oxygen, sees table 2 as a result. In table 2, A represents the prior glass kiln, B represents the glass kiln of the utility model, and the unit of the concentration of the nitrogen oxide is mg/m3Flue gas, fuel consumption in Nm3Per ton of molten glass.
TABLE 2 comparison of the effects of the existing glass kiln and the glass kiln of the utility model
The results in table 2 can be seen that, when the same type of glass is prepared, the glass kiln of the utility model can significantly reduce the melting temperature of the refractory glass, and meanwhile, the concentration of nitrogen oxides in the flue gas and the fuel consumption are also significantly reduced, and the yield of the glass is significantly improved.
Experiment two:
when heating borosilicate glass, still detect the temperature of the different positions in the glass kiln furnace of heating glass batch, because the charge door of glass batch is located the lateral wall of kiln one end in the glass kiln furnace, the throat is located the lateral wall of the kiln other end, throat and charge door are located relative lateral wall, set up 9 detection position with far and near (along glass liquid advancing direction) apart from the charge door end distance, this 9 detection position is 0.5m respectively apart from the distance of charge door, 1m, 2m, 3m, 4m, 5m, 6m, 8m, 10 m. The 9 positions are numbered 1# -9# respectively, and the temperature condition of each detection position is shown in Table 3.
TABLE 3 the utility model discloses the temperature change condition in the glass kiln
As can be seen from the results in Table 3, the utility model discloses a temperature difference of different positions (apart from left side wall, right side wall 1m department, big crown midpoint) has reduced in the glass kiln, explains that the temperature keeps unanimous or is close in the kiln, shows that the temperature difference of glass liquid also can reduce, and temperature distribution is even in the glass kiln, keeps the stability of temperature in the glass kiln.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should be regarded as the contents of the present invention.
Claims (10)
1. The utility model provides a combustion system for glass kiln, includes a plurality of burning spray guns, its characterized in that, burning spray gun establishes at the inside melting tank bottom of glass kiln, and does not establish on the lateral wall of glass kiln.
2. The combustion system for a glass furnace as claimed in claim 1, wherein the lance tip of the combustion lance is directed vertically upward and perpendicular to the bottom of the melting tank.
3. The combustion system for glass kilns of claim 2, wherein said combustion lances are spaced apart by 4-9 counts/m2The area of the bottom of the melting tank is uniformly arranged.
4. The combustion system for a glass kiln according to any one of claims 1 to 3, wherein the interval between two adjacent combustion lances is 40 to 90 cm.
5. The combustion system for glass-melting furnaces as claimed in claim 4, wherein the distance between the combustion lance and the wall of the melting tank is not less than 30 cm.
6. A glass furnace comprising a furnace sidewall and a melting tank, characterized in that it further comprises a combustion system for a glass furnace according to any of claims 1 to 5.
7. The glass furnace of claim 6, wherein the firing height of the firing lance in the firing system is no more than 3/4 for the set molten glass depth.
8. The glass furnace as in claim 7, further comprising a crown disposed above the melting tank and forming a roof of the glass furnace, wherein a ratio of a height of the crown in a vertical direction to a width of the crown in a horizontal direction is 1/10-1/6.
9. The glass kiln as defined in any one of claims 6-8, further comprising a smoke outlet disposed only at an upper portion of one side of the kiln sidewall.
10. The glass furnace of claim 9, wherein the area of the smoke exhaust is 1/20-1/10 of the furnace melt size.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114516715A (en) * | 2021-12-27 | 2022-05-20 | 中国建材国际工程集团有限公司 | Burner and pool bottom burner for glass kiln |
| CN115745373A (en) * | 2022-11-18 | 2023-03-07 | 虹阳显示(咸阳)科技有限公司 | Material hill regulation and control device, kiln and material hill regulation and control method |
-
2020
- 2020-08-31 CN CN202021862674.XU patent/CN213060636U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114516715A (en) * | 2021-12-27 | 2022-05-20 | 中国建材国际工程集团有限公司 | Burner and pool bottom burner for glass kiln |
| CN114516715B (en) * | 2021-12-27 | 2024-01-26 | 中国建材国际工程集团有限公司 | Pool bottom burner for burner and glass kiln |
| CN115745373A (en) * | 2022-11-18 | 2023-03-07 | 虹阳显示(咸阳)科技有限公司 | Material hill regulation and control device, kiln and material hill regulation and control method |
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