CN105967498A - Exhaust pipe immersion combustion method and cannula immersion combustor - Google Patents
Exhaust pipe immersion combustion method and cannula immersion combustor Download PDFInfo
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- CN105967498A CN105967498A CN201610075858.3A CN201610075858A CN105967498A CN 105967498 A CN105967498 A CN 105967498A CN 201610075858 A CN201610075858 A CN 201610075858A CN 105967498 A CN105967498 A CN 105967498A
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- sleeve pipe
- combustion
- nozzle
- cannula
- submerged
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/235—Heating the glass
- C03B5/2356—Submerged heating, e.g. by using heat pipes, hot gas or submerged combustion burners
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
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Abstract
The invention relates to an exhaust pipe immersion combustion method and a cannula immersion combustor. The exhaust pipe immersion combustion method is characterized in that at the bottom of a melting furnace pool, several rows of cannula immersion combustors are spread by crossing the pool wall bricks at two sides, the cannula immersion combustors are composed of at least an inner pipe 1 and a cannula 2, a protective pipe 3 is arranged outside the cannula 2 for preventing erosion of the cannula 2; the external diameter of the inner pipe 1 is less than the internal diameter of the cannula 2, so that a cavity 2a is formed between the outer wall of the inner pipe 1 and the inner wall of the cannula 2, a row of nozzles 1b is arranged on the pipe wall of the inner pipe 1, passes through the wall of the cannula 2 and a cannula 3; a row of nozzles 2b is arranged on the pipe wall of the cannula 2 at two sides (or one side) of the nozzles 1b; the cavity of the nozzles 1b and the cavity 1a of the inner pipe 1 are communicated, and is separated with the cavity 2a; the cavity of the nozzles 2b is communicated with the cavity 2a, and is separated with the cavity 1a; The different fluid can be sprayed from the nozzles 1b and the nozzles 2b, one is fuel, and the other is a combustion improver; the sprayed fuel and the combustion improver meet during a rising process of a melt, and are mixed and then subjected to combustion reaction, and the high temperature flue gas is generated.
Description
Technical field
A kind of submerged combustion method and burner thereof.
Background technology
By its operation principle, burner (including submerged burner) can be defined as a kind of a kind of equipment that material is converted heat energy by this chemical reaction mode of burning, ejection will be converted, so that it fully burns by pre-mixing apparatus by proper proportion is mixed by air with fuel.
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 thermal losses is serious；Two is that melting rate is relatively low；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, reduce discharge and reduce cost and improve kiln service life, the most all replace surface heating, such as submerged combustion and heated by electrodes exploring more effective heating means.
But, up to now, so-called submerged combustion is to insert in kiln by gaseous fuel combustion device from kiln bottom, the waste gas making burning is injected directly in the vitreous humour of molten bath with high temperature and high speed, stir vitreous humour, and major part heat is passed to vitreous humour and batch, make frit melt rapidly.
This method not only can make 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 below 1000 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 comb submerged combustion and sleeve pipe submerged burner thereof; it is characterized in that: bottom melting furnaces kiln pond; across both sides tank block; lay number bar casing tube tandem submerged burner; this sleeve pipe tandem submerged burner is at least made up of inner tube 1, sleeve pipe 2, can arrange protection pipe 3, in case sleeve pipe 2 is etched outside sleeve pipe 2；The external diameter of inner tube 1 is less than sleeve pipe 2 internal diameter, therefore constitutes cavity 2a between inner tube 1 outer wall and sleeve pipe 2 inwall, is provided with a row nozzle 1b on the tube wall of inner tube 1, it also cross sleeve pipe 2 and sleeve pipe 3(if provided, with sleeve pipe 3) tube wall；Sleeve pipe 2 tube wall of nozzle 1b both sides (or side) is provided with a row nozzle 2b；The inner chamber of all nozzle 1b all communicates with the inner chamber 1a of inner tube 1, and cuts off with cavity 2a；The inner chamber of nozzle 2b all communicates with cavity 2a, and cuts off with inner chamber 1a；Wherein nozzle 1b and nozzle 2b sprays (or bloating) two kinds of different fluids, and one of which is fuel, and another kind is combustion adjuvant；The fuel of ejection and combustion adjuvant meets in uphill process in liquation 5, the raw combustion reaction of hybrid concurrency, generates high-temperature flue gas 6, and heat is passed to the liquation 5 of surrounding, thus reaches to melt the purpose with homogenizing material；At liquation upper surface, being coated with one layer of raw materials batch layer 7 fusion all the time, the combustion product gases 6 in liquation 5 escapes through this bed of material, and by draining after lowering the temperature with bed of material heat exchange；Combustion gas imperfect combustion in combustion product gases 6, meets oxygen combustion in liquation 5 surface and raw materials batch layer 7, and heats to raw materials batch；Along with raw materials batch layer bottom constantly melts, top layer constantly spreads the new bed of material, and melting furnaces just can continuously produce required liquation.
The cross-sectional geometry of said nozzle 1b and nozzle 2b can be flat seam, circular hole or other shape.
Said nozzle 1b and nozzle 2b can stretch out or not stretch out outermost sleeve pipe.
Above-mentioned inner tube 1 and sleeve pipe 2 can make of heat resisting steel, and protection pipe 3 refractory material (such as corundum etc.) makes.
In order to improve its service life, it is possible to inner tube 1 and sleeve pipe 2 are taked air cooling or water-cooled protective measure.
Above-mentioned sleeve pipe submerged burner can be in the case of sealing, it is easy to extracts out from kiln both sides, and replaceable wherein each layer sleeve pipe.
When kiln is wider, sleeve pipe submerged burner can be divided into two sections.
Above-mentioned sleeve pipe submerged burner can be laid in the groove of kiln bottom refractory material, in case liquation flowing causes its deformation or impaired.
Above-mentioned sleeve pipe submerged burner is arranged on bottom molten bath.The calorific intensity produced according to melting area size and each sleeve pipe submerged burner, and the needs of melting process, determine installation quantity and the installation site of required sleeve pipe submerged burner.Each nozzle 1b and nozzle 2b area of injection orifice, spout angle and the flow of its fluid and pressure etc. can be determined according to combustion efficiency.
Above-mentioned combustion adjuvant can be compressed air, oxygen-enriched or pure oxygen gas；Fuel can be natural gas, coal gas, liquefied petroleum gas etc..
Compared with other submerged burner, this sleeve pipe submerged burner have the beneficial effect that 1, simple in construction, easy to manufacture, easy to use；2, being conveniently replaceable, service life is long；3, safe and reliable, burning is completely；4, melting efficiency is high, and liquation homo-effect is good；5, the erosion to refractory material is little；6, high-temperature flue gas heat-exchange time in liquation and raw materials batch layer is long, and heat utilization efficiency is high；7, it is suitable for pure oxygen high-temp combustion, is possible not only to melt high-melting-point material, and exhaust gas volumn is greatly reduced；8, the clarification and homogenization of liquation are conducive to；9, for energy-saving and emission-reduction, there is the most great economic and social benefit.
Accompanying drawing explanation
Fig. 1 is that the A-A(of above-mentioned sleeve pipe submerged burner is axial) sectional structural map.
Fig. 2 is the radial section structural map of above-mentioned sleeve pipe submerged burner.
Fig. 3 is the B-B sectional structural map of above-mentioned sleeve pipe submerged burner.
Fig. 4 is the fundamental diagram of above-mentioned sleeve pipe submerged burner.
Fig. 5 is above-mentioned sleeve pipe submerged burner schematic perspective view of installation site on kiln.
1. inner tube in figure, 1a. inner chamber, 1b. nozzle, 2. sleeve pipe, 2a. cavity, 2b. nozzle, 3. protection pipe, 4. kiln bottom refractory material, 5. liquation, 6. high-temperature flue gas, 7. raw materials batch layer, 8. pool wall.
Detailed description of the invention
In Fig. 1, Fig. 2 and Fig. 3, this sleeve pipe tandem submerged burner is at least made up of inner tube 1, sleeve pipe 2, can arrange protection pipe 3, in case sleeve pipe 2 is etched outside sleeve pipe 2；The external diameter of inner tube 1 is less than sleeve pipe 2 internal diameter, therefore constitutes cavity 2a between inner tube 1 outer wall and sleeve pipe 2 inwall, is provided with a row nozzle 1b on the tube wall of inner tube 1, it also cross sleeve pipe 2 and sleeve pipe 3(if provided, with sleeve pipe 3) tube wall；Sleeve pipe 2 tube wall of nozzle 1b both sides (or side) is provided with a row nozzle 2b；The inner chamber of all nozzle 1b all communicates with the inner chamber 1a of inner tube 1, and cuts off with cavity 2a；The inner chamber of nozzle 2b all communicates with cavity 2a, and cuts off with inner chamber 1a.
In Fig. 4, wherein nozzle 1b and nozzle 2b sprays (or bloating) two kinds of different fluids, and one of which is fuel, and another kind is combustion adjuvant；The fuel of ejection and combustion adjuvant meets in uphill process in liquation, the raw combustion reaction of hybrid concurrency, generates high-temperature flue gas, and heat is passed to the liquation of surrounding, thus reaches to melt the purpose with homogenizing material；At liquation upper surface, being coated with one layer of raw materials batch layer fusion all the time, the combustion product gases in liquation escapes through this bed of material, and by draining after lowering the temperature with bed of material heat exchange；Combustion gas imperfect combustion in combustion product gases, meets oxygen combustion in molten surface and raw materials batch layer, and heats to raw materials batch；Along with raw materials batch layer bottom constantly melts, top layer constantly spreads the new bed of material, and melting furnaces just can continuously produce required liquation.
The cross-sectional geometry of said nozzle 1b and nozzle 2b can be flat seam, circular hole or other shape.
Said nozzle 1b and nozzle 2b can stretch out or not stretch out outermost sleeve pipe.
Above-mentioned inner tube 1 and sleeve pipe 2 can make of heat resisting steel, and protection pipe 3 refractory material (such as corundum etc.) makes.
In Fig. 5, above-mentioned sleeve pipe tandem submerged burner can be in the case of sealing, it is easy to extracts out from kiln both sides, and replaceable wherein each layer sleeve pipe.
When kiln is wider, sleeve pipe tandem submerged burner can be divided into two sections.
Above-mentioned sleeve pipe tandem submerged burner can be laid in the groove of kiln bottom refractory material, in case liquation flowing causes its deformation or impaired.
Above-mentioned sleeve pipe tandem submerged burner is arranged on bottom molten bath.The calorific intensity produced according to melting area size and each sleeve pipe tandem submerged burner, and the needs of melting process, determine installation quantity and the installation site of required sleeve pipe tandem submerged burner.Each nozzle 1b and nozzle 2b area of injection orifice, spout angle and the flow of its fluid and pressure etc. can be determined according to combustion efficiency.
Claims (9)
1. a comb submerged combustion and sleeve pipe submerged burner thereof; it is characterized in that: bottom melting furnaces kiln pond; across both sides tank block; lay number bar casing tube submerged burner; this sleeve pipe submerged burner is at least made up of inner tube 1, sleeve pipe 2; protection pipe 3 can be set outside sleeve pipe 2, in case sleeve pipe 2 is etched；The external diameter of inner tube 1 is less than sleeve pipe 2 internal diameter, therefore constitutes cavity 2a between inner tube 1 outer wall and sleeve pipe 2 inwall, is provided with a row nozzle 1b on the tube wall of inner tube 1, and it is also cross sleeve pipe 2 and the tube wall of sleeve pipe 3；Sleeve pipe 2 tube wall of nozzle 1b both sides (or side) is provided with a row nozzle 2b；The inner chamber of all nozzle 1b all communicates with the inner chamber 1a of inner tube 1, and cuts off with cavity 2a；The inner chamber of nozzle 2b all communicates with cavity 2a, and cuts off with inner chamber 1a；Wherein nozzle 1b and nozzle 2b sprays (or bloating) two kinds of different fluids, and one of which is fuel, and another kind is combustion adjuvant；The fuel of ejection and combustion adjuvant meets in uphill process in liquation, the raw combustion reaction of hybrid concurrency, generates high-temperature flue gas, and heat is passed to the liquation of surrounding, thus reaches to melt the purpose with homogenizing material；At liquation upper surface, being coated with one layer of raw materials batch layer fusion all the time, the combustion product gases in liquation escapes through this bed of material, and by draining after lowering the temperature with bed of material heat exchange；Combustion gas imperfect combustion in combustion product gases, meets oxygen combustion in molten surface and raw materials batch layer, and heats to raw materials batch；Along with raw materials batch layer bottom constantly melts, top layer constantly spreads the new bed of material, and melting furnaces just can continuously produce required liquation.
A kind of sleeve pipe submerged burner the most according to claim 1, is characterized in that: the cross-sectional geometry of said nozzle 1b and nozzle 2b is flat seam, circular hole or other shape.
A kind of sleeve pipe submerged burner the most according to claim 1, is characterized in that: the cross-sectional geometry of said nozzle 1b and nozzle 2b is circular hole.
A kind of comb submerged combustion the most according to claim 1, is characterized in that: above-mentioned sleeve pipe submerged burner can be extracted out from kiln both sides, and change wherein each layer sleeve pipe in the case of sealing.
A kind of comb submerged combustion the most according to claim 1, is characterized in that: when kiln is wider, sleeve pipe submerged burner is divided into two sections.
A kind of comb submerged combustion the most according to claim 1, is characterized in that: above-mentioned sleeve pipe submerged burner can be laid in the groove of kiln bottom refractory material, in case liquation flowing causes its deformation or impaired.
A kind of comb submerged combustion the most according to claim 1, is characterized in that: above-mentioned sleeve pipe submerged burner is arranged on bottom molten bath.
A kind of comb submerged combustion the most according to claim 1, it is characterized in that: the calorific intensity produced according to melting area size and each sleeve pipe submerged burner, and the needs of melting process, determine installation quantity and the installation site of required sleeve pipe submerged burner.
A kind of sleeve pipe submerged burner the most according to claim 1, is characterized in that: determine each nozzle 1b and nozzle 2b area of injection orifice, spout angle and the flow of its fluid and pressure etc. according to combustion efficiency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610075858.3A CN105967498A (en) | 2016-02-03 | 2016-02-03 | Exhaust pipe immersion combustion method and cannula immersion combustor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610075858.3A CN105967498A (en) | 2016-02-03 | 2016-02-03 | Exhaust pipe immersion combustion method and cannula immersion combustor |
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| Publication Number | Publication Date |
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| CN105967498A true CN105967498A (en) | 2016-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610075858.3A Pending CN105967498A (en) | 2016-02-03 | 2016-02-03 | Exhaust pipe immersion combustion method and cannula immersion combustor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108613205A (en) * | 2018-05-03 | 2018-10-02 | 青岛德固特节能装备股份有限公司 | air preheater soot blower structure |
| CN110282860A (en) * | 2019-07-15 | 2019-09-27 | 中国建材国际工程集团有限公司 | A kind of burner |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050236747A1 (en) * | 2004-04-27 | 2005-10-27 | Rue David M | Process and apparatus for uniform combustion within a molten material |
| CN2883936Y (en) * | 2006-01-17 | 2007-03-28 | 王洪全 | Gas-in-gas energy saving burner |
| CN103080025A (en) * | 2011-03-31 | 2013-05-01 | 安瀚视特控股株式会社 | Glass substrate production method |
| CN104176907A (en) * | 2014-08-16 | 2014-12-03 | 徐林波 | Novel method for melting liquid glass by submerged combustion |
-
2016
- 2016-02-03 CN CN201610075858.3A patent/CN105967498A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050236747A1 (en) * | 2004-04-27 | 2005-10-27 | Rue David M | Process and apparatus for uniform combustion within a molten material |
| CN2883936Y (en) * | 2006-01-17 | 2007-03-28 | 王洪全 | Gas-in-gas energy saving burner |
| CN103080025A (en) * | 2011-03-31 | 2013-05-01 | 安瀚视特控股株式会社 | Glass substrate production method |
| CN104176907A (en) * | 2014-08-16 | 2014-12-03 | 徐林波 | Novel method for melting liquid glass by submerged combustion |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108613205A (en) * | 2018-05-03 | 2018-10-02 | 青岛德固特节能装备股份有限公司 | air preheater soot blower structure |
| CN110282860A (en) * | 2019-07-15 | 2019-09-27 | 中国建材国际工程集团有限公司 | A kind of burner |
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Application publication date: 20160928 |
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