CN201867043U - Tunnel kiln for roasting quartz crucibles - Google Patents
Tunnel kiln for roasting quartz crucibles Download PDFInfo
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- CN201867043U CN201867043U CN 201020604775 CN201020604775U CN201867043U CN 201867043 U CN201867043 U CN 201867043U CN 201020604775 CN201020604775 CN 201020604775 CN 201020604775 U CN201020604775 U CN 201020604775U CN 201867043 U CN201867043 U CN 201867043U
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- preheating zone
- clinkering
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Abstract
The utility model relates to a tunnel kiln for roasting quartz crucibles, comprising a kiln body and a rail. The tunnel kiln for roasting quartz crucibles is characterized in that the kiln body is formed by sequentially connecting a preheating zone, a clinkering zone and a cooling zone, wherein the joint between the preheating zone and the clinkering zone and the joint between the clinkering zone and the cooling zone are respectively provided with a fire damper, a smoke discharging system is arranged in the preheating zone, the rear segment of the preheating zone and wall bodies at both sides of the clinkering zone are respectively provided with a combustor, and the combustor is connected with a pipeline of a gas supply system through a valve; and the kiln body is provided with observation ports opposite to the combustors, the preheating zone and the clinkering zone are respectively provided with a thermocouple connected with a temperature display and control device, a plurality of groups of fire dampers are uniformly arranged in the clinkering zone, and a cooling device is arranged in the cooling zone. The long-distance, rectilinear, through and continuous kiln body can realize circular operation and production from kiln car loading, preheating, heating, cooling to kiln discharging, and has high productivity, low energy consumption and high production efficiency; and the obtained products are endowed with good sintering uniformity and hard deformation, thereby ensuring the stability of product quality.
Description
Technical field
The utility model relates to a kind of required roasting silica crucible tunnel cave of solar energy polycrystalline silicon sheet of producing, and belongs to field of inorganic nonmetallic material.
Background technology
Recent years, tapping a new source of energy was the only way that various countries solve energy crisis because global energy is in short supply.Various countries are main contents and the long-term planning of the development and use of solar energy as energy revolution.Photovoltaic industry has become fast-developing in the world industry.The fast development of solar-energy photo-voltaic cell causes global solar polysilicon chip constant tension.The polysilicon industry has become a big focus of global investing.In China, polysilicon has become new industry district.The polysilicon silica crucible requires chemical purity height (SiO2 〉=99.5%), appearance and size big (maximal side 1100mm), moulding and burn till the difficulty height, at present, produce the enterprise of polysilicon and family more than 400 is arranged building enterprise, roasting workshop section all produces with periodic kilns the kiln (based on shuttle kiln).Periodic kilns the kiln has seriously restricted the scale of manufacturing enterprise, and product quality also creating a difference in the roasting process each time, influences product percent of pass.Simultaneously, this kind kiln energy consumption is also very big, gives that industry is energy-conservation brings very big difficulty.In order better to satisfy the development of photovoltaic industry, silica crucible manufacturing enterprise need scale, quality and energy-conservation on have that a kind of production capacity is big, steady quality, kiln that energy consumption is low.
Summary of the invention
According to above deficiency of the prior art, the technical problems to be solved in the utility model is: the roasting silica crucible that a kind of production capacity is big, energy consumption is low, production efficiency is high tunnel cave is provided, crucible can pass through preheating zone, clinkering zone and salband continuously, firing temperature is even, product is indeformable, sintering degree high conformity, has guaranteed the stability of product quality.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of roasting silica crucible tunnel cave, comprise kiln body and track, it is characterized in that: the kiln body is by the preheating zone, clinkering zone and salband are formed by connecting in turn, the junction of preheating zone and clinkering zone, the junction of clinkering zone and salband is equipped with fireguard, be provided with smoke evacuation system in the preheating zone, all be provided with burner on the both sides body of wall of preheating zone second half section and clinkering zone, burner links to each other with the pipeline of gas supply system by valve, the kiln body is provided with the flame-observing hole relative with the burner position, thermocouple evenly is set on preheating zone and the clinkering zone, thermocouple links to each other with the temperature display control unit, many group fireguards evenly are set in the clinkering zone, are provided with cooling device in the salband.
Smoke evacuation system in the preheating zone comprises exhaust opening and smoke exhaust fan, and exhaust opening connects smoke exhaust fan by flue.Also be provided with the flue gas agitating device in the preheating zone, the flue gas agitating device comprises that flue gas stirs air curtain and flue gas stirring port, what flue gas stirred that air curtain is arranged on the preheating zone enters the kilneye place, the flue gas stirring port evenly is arranged on the body of wall of preheating zone, and flue gas stirs air curtain and the flue gas stirring port all is connected to the stirring blower fan by pipeline.The flue gas agitating device also can be that other can finish the device that flue gas stirs action.The flue gas agitating device is used for stirring the flue gas that silica crucible produces at warm, thereby accelerates the speed that flue gas is discharged from the preheating zone, thereby can effectively regulate the temperature difference in the kiln, and flue gas is finally discharged from the workshop by smoke exhaust fan.
Cooling device in the salband is included in the chilling air port that sets gradually on the body of wall of salband both sides, takes out hot-air mouth, slow cooling air port and kiln body cooling blower, the chilling air port is connected to the chilling blower fan by pipeline, use air that goods are carried out fast cooling, taking out hot-air mouth is connected to by pipeline and takes out air-heater, the kiln hot blast is used for the combustion-supporting and workshop heating of combustion gas, the slow cooling air port is connected to the slow cooling blower fan by pipeline, use air to reduce goods kiln discharge temperature, regulate the goods crystal transfer, kiln body cooling blower quickens the goods cooling, makes things convenient for the goods loading and unloading.The leading portion of salband can also be provided with the chilling air curtain, and the chilling air curtain connects the chilling blower fan by pipeline.
Be provided with autoalarm in the kiln body; gas supply system is carried out safeguard protection; warning device is reported to the police when leaking air phenomenon; the prompting danger; reach force disconnect source of the gas behind the finite concentration, ensure production safety, and behind the automatic loss of ignition of burner; warning device also can be reported to the police, and cuts off the burner source of the gas.In addition, full week of kiln body is provided with the steel frame of reinforcing, makes the kiln body more firm.
Operation principle and process:
Kiln car orbits under the control of power controller, the goods base substrate divides individual layer or double-deck the loading by size on the kiln car, the burner of preheating zone second half section and clinkering zone both sides body of wall all is that two-layer intersection evenly is provided with about the branch, burner links to each other with the pipeline of gas supply system by valve, thereby can select the burner of levels according to the goods base substrate that loads on the kiln car, on the burner opposite corresponding flame-observing hole is set, the ignition temperature and the combustion case of burner is observed by flame-observing hole.The both sides body of wall of preheating zone second half section is provided with burner, and the top, preheating zone is provided with thermocouple, and thermocouple links to each other with the temperature display control unit, thereby control goods base substrate temperature is raised to 800 ℃ from room temperature.The junction of preheating zone and clinkering zone is provided with fireguard, can prevent that thermal current is toward the excessive velocities of preheating zone in the clinkering zone.On the both sides body of wall of clinkering zone burner is set, all is provided with thermocouple on clinkering zone top and the side walls, thereby control goods base substrate temperature is raised to 1200 ℃ from 800 ℃, the clinkering zone maximum operation (service) temperature can reach 1350 ℃.In the kiln body of clinkering zone and salband connecting place fireguard is set, fireguard will be lower than kiln top certain size, prevents that clinkering zone and salband cold airflow from circulating mutually, and slows down gas flow rates in the clinkering zone, reduces the temperature difference in the kiln.When kiln car process salband leading portion, the chilling wind in chilling air curtain and chilling air port makes about goods rapid cooling to 800 ℃, goods continue cooling through taking out hot-air mouth, taking out air-heater extracts hot gas out and is used for raw material drying and workshop heating, the slow cooling wind effect of goods in the slow cooling air port drops to about 500 ℃ then again, when through the salband end, kiln body cooling blower carries out cold by force to goods, unload thereby help the laggard luggage of goods kiln discharge.Be transported to subsequent processing processing by kiln car behind the moulded products kiln discharge, the action of kiln car is controlled by power controller.
Tunnel cave heating described in the utility model is fuel used to be liquefied petroleum gas or natural gas, goods silica crucible base substrate is heated by thermal current in the kiln and burner in the preheating zone, slowly finish 573 ℃ of crystal transfers, and fully preheating, make base substrate in the clinkering zone homogeneous heating, reach firing temperature and obtain the high-quality goods.Job efficiency reaches more than 90%, and the fuel consumption cost is compared with existing periodic kilns the kiln can reduce by 15%～20%, energy savings.Tunnel cave described in the utility model connects the continous way tunnel cave for long apart from straight line; it can realize the goods specification from all goods below 1100 * 1100mm (or Ф 1000mm) from the loading of kiln car, preheating, heating, cooling and kiln discharge cycle operation produce silica crucible; annual production reaches more than 30000; its production efficiency improves more than 5 times than existing shuttle-type kiln; and labour intensity is low; operating environment is good, and has in environmental protection.
The beneficial effect that the utility model had is: a kind of roasting silica crucible tunnel cave is provided, long kiln body apart from straight line perforation continous way can be realized the cycle operation production of goods from loading of kiln car, preheating, heating, cooling and kiln discharge, and labour intensity is low and production efficiency is high; By fully preheating before the sintering, make base substrate in the clinkering zone homogeneous heating, the sintering degree high conformity of product cools off base substrate by multiple working procedure behind the sintering, makes product not yielding, has guaranteed the stability of product quality; Flue gas agitating device in the preheating zone can be accelerated the speed that flue gas is discharged from the preheating zone, thereby can effectively regulate the temperature difference in the kiln; The air-heater of taking out that is provided with in the salband is extracted the hot gas of extracting out out and is used for raw material drying and workshop heating, and heat energy is fully used, and has saved the energy.
Description of drawings
Fig. 1 is the cutaway view of preheating zone in the utility model;
Fig. 2 is the cutaway view of clinkering zone in the utility model;
Fig. 3 is the cutaway view of salband in the utility model;
Fig. 4 is the A-A profile of Fig. 1;
Fig. 5 is the B-B profile of Fig. 2;
Fig. 6 is the C-C profile of Fig. 3.
Among the figure: 1, steel frame; 2, goods; 3, kiln car; 4, track; 5, flue gas stirring port; 6, exhaust opening; 7, thermocouple; 8, kiln body; 9, burner; 10, fireguard; 11, chilling air port; 12, take out hot-air mouth; 13, slow cooling air port; 14, kiln body cooling blower; 15, flame-observing hole
The specific embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described further:
Shown in Fig. 1～6, roasting silica crucible tunnel cave comprises kiln body 8 and track 4, and the kiln car 3 that goods 2 (being the crucible base substrate) are housed moves on track 4, and kiln body 8 is formed by connecting in turn by preheating zone, clinkering zone and salband, and 8 full weeks of kiln body reinforce with steel frame 1.
Fig. 1,4 is the structural representation of preheating zone, be provided with smoke evacuation system and flue gas agitating device in the preheating zone, smoke evacuation system comprises exhaust opening 6 and smoke exhaust fan, exhaust opening 6 connects smoke exhaust fan by flue, the flue gas agitating device comprises that flue gas stirs air curtain and flue gas stirring port 5, what flue gas stirred that air curtain is arranged on the preheating zone enters the kilneye place, flue gas stirring port 5 evenly is arranged on the body of wall of preheating zone, flue gas stirs air curtain and flue gas stirring port 5 all is connected to the stirring blower fan by pipeline, the second half section of preheating zone is provided with burner 9, burner 9 links to each other with the pipeline of gas supply system by valve, kiln body 8 is provided with the flame-observing hole 15 relative with burner 9 positions, thermocouple 7 evenly is set on the preheating zone, and thermocouple 7 links to each other with the temperature display control unit, and the junction of preheating zone and clinkering zone is provided with fireguard 10.The flue gas agitating device is used for stirring the flue gas that silica crucible produces at warm, thereby accelerates the speed that flue gas is discharged from the preheating zone, effectively regulates the temperature difference in the kiln, and flue gas is finally discharged from the workshop by smoke exhaust fan.The preheating zone can be designed to 14 joints, plays 10 joints that from 1 joint 16 exhaust openings 6 being set altogether, plays the 14 both sides bodies of wall that save, 8 burners 9 arranged in a crossed manner respectively from 11 joints, and burner 9 positions are higher than kiln car 3 table tops, and the top, preheating zone is provided with 7 thermocouples 7.
Fig. 2,5 is the structural representation of clinkering zone, all be provided with burner 9 on the both sides body of wall of clinkering zone, burner 9 links to each other with the pipeline of gas supply system by valve, the kiln body is provided with and the relative flame-observing hole in burner 9 positions, thermocouple 7 evenly is set on the clinkering zone, thermocouple 7 links to each other with the temperature display control unit, and many group fireguards 10 evenly are set in the clinkering zone, and the junction of clinkering zone and salband also is provided with fireguard 10.Clinkering zone can be designed to 16 joints, the both sides body of wall of preheating zone divides two-layer 48 burners 9 arranged in a crossed manner up and down, and burner 9 positions are higher than kiln car 3 table tops, and the clinkering zone top is provided with 8 thermocouples 7, on the side walls 8 pairs of thermocouples 7 are set simultaneously, 5 groups of fireguards 10 evenly are set in the clinkering zone.
Fig. 3,6 is the structural representation of salband, be provided with cooling device in the salband, cooling device is included in the chilling air port 11 that sets gradually on the body of wall of salband both sides, take out hot-air mouth 12, slow cooling air port 13 and kiln body cooling blower 14, chilling air port 11 is connected to the chilling blower fan by pipeline, use air that goods are carried out fast cooling, taking out hot-air mouth 12 is connected to by pipeline and takes out air-heater, the kiln hot blast is used for the combustion-supporting and workshop heating of combustion gas, slow cooling air port 13 is connected to the slow cooling blower fan by pipeline, use air to reduce goods kiln discharge temperature, regulate the goods crystal transfer, kiln body cooling blower 14 quickens the goods cooling, makes things convenient for the goods loading and unloading.The leading portion of salband can also be provided with the chilling air curtain, and the chilling air curtain connects the chilling blower fan by pipeline.Salband can be designed to 20 joints, the kiln body both sides body of wall that plays 5 joints from 1 joint is provided with 1 group of chilling air curtain and 32 chilling air ports 11, the chilling air port is two-layer arranged in a crossed manner about in the of 11 minutes, the height in chilling air port 11 is identical with burner 9, playing 12 joints from 6 joints evenly is provided with 13 at the both sides body of wall and takes out hot-air mouth 12, its position height is identical with exhaust opening 6, play 17 joints two-layer difference 36 slow cooling air ports 13 arranged in a crossed manner about the body of wall of both sides from 13 joints, its position height is identical with burner 9, at 19 and 20 joint side walls 6 kiln body cooling blowers 14 is set.
In addition; also be provided with autoalarm in the kiln body; gas supply system is carried out safeguard protection; warning device is reported to the police when leaking air phenomenon, and the prompting danger reaches force disconnect source of the gas behind the finite concentration; ensure production safety; and behind the automatic loss of ignition of burner, warning device also can be reported to the police, and cuts off the burner source of the gas.In addition, full week of kiln body is provided with the steel frame of reinforcing, makes the kiln body more firm.
Operation principle and process:
Kiln car 3 is in operation on track 4 under the control of power controller, the goods base substrate divides individual layer or double-deck the loading by size on the kiln car 3, the burner 9 of preheating zone second half section and clinkering zone both sides body of wall all is that two-layer intersection evenly is provided with about the branch, burner 9 links to each other with the pipeline of gas supply system by valve, thereby can select the burner 9 of levels according to the goods base substrate that loads on the kiln car 3, on burner 9 opposites corresponding flame-observing hole 15 is set, observes by the ignition temperature and the combustion case of 15 pairs of burners of flame-observing hole.The both sides body of wall of preheating zone second half section is provided with burner 9, and the top, preheating zone is provided with thermocouple 7, and thermocouple 7 links to each other with the temperature display control unit, thereby control goods base substrate temperature is raised to 800 ℃ from room temperature.The junction of preheating zone and clinkering zone is provided with fireguard 10, can prevent that thermal current is toward the excessive velocities of preheating zone in the clinkering zone.On the both sides body of wall of clinkering zone burner 9 is set, all is provided with thermocouple 7 on clinkering zone top and the side walls, thereby control goods base substrate temperature is raised to 1200 ℃ from 800 ℃, the clinkering zone maximum operation (service) temperature can reach 1350 ℃.In the kiln body of clinkering zone and salband connecting place fireguard 10 is set, fireguard 10 will be lower than kiln top certain size, prevents that clinkering zone and salband cold airflow from circulating mutually, and slows down gas flow rates in the clinkering zone, reduces the temperature difference in the kiln.When kiln car 3 process salband leading portions, the chilling wind in chilling air curtain and chilling air port 11 makes about goods rapid cooling to 800 ℃, goods continue cooling through taking out hot-air mouth 12, taking out air-heater extracts hot gas out and is used for raw material drying and workshop heating, the slow cooling wind effect of goods in slow cooling air port 13 drops to about 500 ℃ then again, when through the salband end, 14 pairs of goods of kiln body cooling blower carry out cold by force, unload thereby help the laggard luggage of goods kiln discharge.Be transported to subsequent processing processing by kiln car 3 behind the moulded products kiln discharge, the action of kiln car 3 is controlled by power controller.
Claims (9)
1. roasting silica crucible tunnel cave, comprise kiln body and track, it is characterized in that: the kiln body is by the preheating zone, clinkering zone and salband are formed by connecting in turn, the junction of preheating zone and clinkering zone, the junction of clinkering zone and salband is equipped with fireguard, be provided with smoke evacuation system in the preheating zone, all be provided with burner on the both sides body of wall of preheating zone second half section and clinkering zone, burner links to each other with the pipeline of gas supply system by valve, the kiln body is provided with the flame-observing hole relative with the burner position, thermocouple evenly is set on preheating zone and the clinkering zone, thermocouple links to each other with the temperature display control unit, many group fireguards evenly are set in the clinkering zone, are provided with cooling device in the salband.
2. roasting silica crucible tunnel cave according to claim 1, it is characterized in that: described smoke evacuation system comprises exhaust opening and smoke exhaust fan, and exhaust opening connects smoke exhaust fan by flue.
3. roasting silica crucible tunnel cave according to claim 1 is characterized in that: be provided with the flue gas agitating device in the described preheating zone.
4. roasting silica crucible tunnel cave according to claim 3, it is characterized in that: described flue gas agitating device comprises that flue gas stirs air curtain and flue gas stirring port, what flue gas stirred that air curtain is arranged on the preheating zone enters the kilneye place, the flue gas stirring port evenly is arranged on the body of wall of preheating zone, and flue gas stirs air curtain and all is connected blower fan by pipeline with the flue gas stirring port.
5. roasting silica crucible tunnel cave according to claim 1, it is characterized in that: described cooling device is included in the chilling air port that sets gradually on the body of wall of salband both sides, takes out hot-air mouth, slow cooling air port and kiln body cooling blower, the chilling air port, takes out hot-air mouth, slow cooling air port and connects the chilling blower fan, takes out air-heater, slow cooling blower fan by pipeline respectively.
6. roasting silica crucible tunnel cave according to claim 1, it is characterized in that: the leading portion of described salband is provided with the chilling air curtain, and the chilling air curtain connects the chilling blower fan by pipeline.
7. roasting silica crucible tunnel cave according to claim 1 is characterized in that: two-layer intersection was arranged on the both sides body of wall of preheating zone second half section and clinkering zone uniformly about described burner divided.
8. roasting silica crucible tunnel cave according to claim 1 is characterized in that: full week of kiln body is provided with the steel frame of reinforcing.
9. roasting silica crucible tunnel cave according to claim 1 is characterized in that: be provided with autoalarm in the kiln body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020604775 CN201867043U (en) | 2010-11-12 | 2010-11-12 | Tunnel kiln for roasting quartz crucibles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020604775 CN201867043U (en) | 2010-11-12 | 2010-11-12 | Tunnel kiln for roasting quartz crucibles |
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| Publication Number | Publication Date |
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| CN201867043U true CN201867043U (en) | 2011-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201020604775 Expired - Lifetime CN201867043U (en) | 2010-11-12 | 2010-11-12 | Tunnel kiln for roasting quartz crucibles |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305534A (en) * | 2011-09-23 | 2012-01-04 | 王凯 | Quick vehicle-type reacting furnace |
| CN102679726A (en) * | 2012-05-24 | 2012-09-19 | 江苏丰东炉业股份有限公司 | Natural gas heating furnace and smoke exhaust system thereof |
| CN104567360A (en) * | 2014-12-27 | 2015-04-29 | 宁夏黑金科技有限公司 | Novel burning equipment for producing microcrystalline fireproof foaming heat-preservation material |
| CN104807325A (en) * | 2014-12-09 | 2015-07-29 | 湖南奥特朗工业装备有限公司 | Tunnel kiln |
| CN104896921A (en) * | 2015-06-25 | 2015-09-09 | 梁善良 | Roller kiln |
| CN105627734A (en) * | 2016-03-09 | 2016-06-01 | 浙江尚鼎工业炉有限公司 | Heating furnace capable of fast heating |
| CN109654875A (en) * | 2019-01-24 | 2019-04-19 | 老梁（贵安新区）科技有限公司 | A kind of quick Roasting Kiln System of low code and its technique |
| CN111661997A (en) * | 2020-06-28 | 2020-09-15 | 徐州协鑫太阳能材料有限公司 | Method for preventing deformation of quartz crucible in sintering kiln |
-
2010
- 2010-11-12 CN CN 201020604775 patent/CN201867043U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305534A (en) * | 2011-09-23 | 2012-01-04 | 王凯 | Quick vehicle-type reacting furnace |
| CN102679726A (en) * | 2012-05-24 | 2012-09-19 | 江苏丰东炉业股份有限公司 | Natural gas heating furnace and smoke exhaust system thereof |
| CN104807325A (en) * | 2014-12-09 | 2015-07-29 | 湖南奥特朗工业装备有限公司 | Tunnel kiln |
| CN104567360A (en) * | 2014-12-27 | 2015-04-29 | 宁夏黑金科技有限公司 | Novel burning equipment for producing microcrystalline fireproof foaming heat-preservation material |
| CN104896921A (en) * | 2015-06-25 | 2015-09-09 | 梁善良 | Roller kiln |
| CN105627734A (en) * | 2016-03-09 | 2016-06-01 | 浙江尚鼎工业炉有限公司 | Heating furnace capable of fast heating |
| CN109654875A (en) * | 2019-01-24 | 2019-04-19 | 老梁（贵安新区）科技有限公司 | A kind of quick Roasting Kiln System of low code and its technique |
| CN111661997A (en) * | 2020-06-28 | 2020-09-15 | 徐州协鑫太阳能材料有限公司 | Method for preventing deformation of quartz crucible in sintering kiln |
| CN111661997B (en) * | 2020-06-28 | 2022-03-08 | 徐州协鑫太阳能材料有限公司 | Method for preventing deformation of quartz crucible in sintering kiln |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiangxi Sinoma New Solar Materials Co., Ltd. Assignor: Sinoma hi tech material Limited by Share Ltd|Shandong Industrial Ceramic Research & Design Institute Co Ltd Contract record no.: 2011370000288 Denomination of utility model: Tunnel kiln for roasting quartz crucibles Granted publication date: 20110615 License type: Exclusive License Record date: 20110627 |
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| CX01 | Expiry of patent term |
Granted publication date: 20110615 |
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| CX01 | Expiry of patent term |