CN101520278A - Ceramic kiln emergency cooling mode, method and device for using waste heat - Google Patents
Ceramic kiln emergency cooling mode, method and device for using waste heat Download PDFInfo
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- CN101520278A CN101520278A CN200910043067A CN200910043067A CN101520278A CN 101520278 A CN101520278 A CN 101520278A CN 200910043067 A CN200910043067 A CN 200910043067A CN 200910043067 A CN200910043067 A CN 200910043067A CN 101520278 A CN101520278 A CN 101520278A
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Abstract
The invention discloses a ceramic kiln emergency cooling mode, and a method and a device for using waste heat. An indirect heat absorbing and cooling system is arranged in an emergency cooling transitional zone between a burning zone and an emergency cooling zone of a ceramic kiln to allow a product to cool in the emergency cooling transitional zone in an indirect mode and to transmit hot air generated after product cooling in the indirect heat absorbing and cooling system to the burning zone or a drying room as heating air. The emergency cooling device is an indirect cooling device. The inside of the indirect cooling device is provided with a cooling cavity for allowing cold air to pass through to cool the indirect cooling device, and flowing air for cooling the indirect cooling device passes through the cavity; the indirect cooling device is cooled by the flowing air and absorbs the heat passing by the product in the emergency cooling transitional zone to cool the product; and the indirect is provided with an inlet of the flowing air and an outlet of the flowing air, and is heated into hot air after passing through the indirect cooling device.
Description
Technical field
The present invention relates to a kind of structure of ceramic kiln, refer in particular to the temperature-controlled process and the device in a kind of ceramic kiln emergency cooling district, it mainly is the high-temperature gas that how rationally to utilize the ceramic kiln firing zone, in the best holding temperature and best heat preservation zone after accurately the control ceramic burns till, method and the device that to greatest extent waste heat of ceramic product firing temperature field is fully utilized is the ceramic kiln technical field again.
Background technology
For the development of ceramic industry, the saving energy in kiln technology is being brought into play important impetus all the time.Along with the ceramic kiln continuous advancement in technology, ceramic kiln originally adopts the kiln that burns coal also all progressively changing burning natural gas or fuel oil into also in continuous improvement always.But natural gas or fuel oil equal energy source are as resource non-renewable on the earth, because quantity consumed is constantly soaring, price raises up at double, becomes the major obstacle of pottery development.Therefore the power-saving technology of kiln becomes a crucial part of ceramic technology development.The type of kiln roughly is divided into two kinds: the one, and the continous way kiln is as tunnel cave or roller way kiln; Another kind is periodic kilns the kiln such as shuttle kiln, and few products also adopts high temperature kiln.Domestic ceramics and architectural pottery adopt roller way kiln more, and sanitary ceramics then adopts kiln or shuttle-type kiln to burn till.Quality and the problem that reduces energy resource consumption are burnt till round raising by various countries pottery enterprise in the process of carrying out the kiln technological revolution, think that the key principle of saving energy in kiln has two: the one, and the innovation of kiln will center on modern design; The 2nd, note fully selecting for use modern stove material.They generally believe: kiln is the Thermal Equipment of ceramic enterprise most critical, also is the maximum equipment of power consumption, but the level of furnace equipment energy consumption depends primarily on the structure and the firing technology of kiln.Wherein the structure of kiln is basic, if neither one well designs, wanting to improve burning techniques is very difficult, powerless even to a certain extent; On the contrary, good furnace construction has been arranged, also needed more advanced firing technology and guarantee that this is interdependence, and is indispensable; Only make above both reasonably cooperate and could guarantee that novel kiln burns till the raising of quality, reduces energy resource consumption again.
Yet our domestic existing kiln is along with continuous advancement in technology, though kiln is a fuel to change natural gas or liquefied gas, discarded coal or rusting become, furnace atmosphere is burnt till with oxidizing flame or reducing flame, but kiln firing mode that is adopted and structure are still old kiln firing mode and structure mostly, especially come with some shortcomings to product cooling mode that is incubated the back quench zone and structural design at the kiln clinkering zone, present kiln is released a kind of fast-firing kilm stove, heat preservation zone end after the kiln clinkering zone is adopted cold wind chilling air curtain that ceramic product is carried out the chilling cooling and is handled, with control ceramic the separating out of heavy metal when the cooling.But so the thermal loss of kiln is quite big, is unfavorable for energy-conservation.And all be to take directly to blow in the kiln method of product with wind to cool off when chilling, the problem that product surface bursts appears owing to wind-force is irregular but be easy to like this produce, therefore necessary this is improved.
Summary of the invention
Technical problem to be solved by this invention is: at the serious phenomenon of present kiln thermal waste, propose a kind of more energy-conservation kiln process for calcining, this method can fully make kiln clinkering zone to the heat energy of insulation back quench zone be fully utilized.Fully excavate the production capacity of kiln, energy-saving and cost-reducing.
Another object of the present invention provides a kind of apparatus structure of said method.
The objective of the invention is to be achieved through the following technical solutions: a kind of kiln burns till quick cooling method, in kiln clinkering zone to the chilling transition zone that is incubated the back quench zone indirect heat absorption cooling system is set, make product obtain cooling by a kind of indirect heat absorption mode, and the hot-air behind the cooling products is transported to clinkering zone or drying room as hot air feed in the cooling system that will absorb heat indirectly in the chilling transition zone.Wherein:
Described indirect heat absorption cooling system is in the chilling transition zone indirect cooling device to be set, constantly in indirect cooling device, carry cold air by air transport device, cool off by the mobile indirect cooling device that makes of cold air in indirect cooling device, form a chilling transition zone; When through the ceramic product of insulation during through the over-quenching transition zone, again by indirect cooling device constantly draw indirectly the heat by product, lower the temperature and make by product.
Described chilling transition zone is one section zone between heat preservation zone and natural cooling zone, and this zone is the temperature field of a temperature fusion, and is excessive to normal temperature rapidly by the high temperature of heat preservation zone; The design length of chilling transition zone and shape have different structures according to kiln and product different.
Described indirect cooling device is constantly indirectly drawn the heat of institute by product and is meant that indirect cooling device passes through in the chilling transition zone air drawn and pass through this regional product heat, when the product through insulation enters the chilling transition zone, to pass to air in this zone to heat, make the air heating; And indirect cooling device will constantly be passed through draw heat the air of product by heating in the chilling transition zone, make flow air heating in the indirect cooling device, take away heat with air flowing in indirect cooling device again.
Hot-air in the described cooling system that will absorb heat indirectly behind the cooling products is transported to clinkering zone or drying room is meant being transported to clinkering zone burner noz(zle) place by the hot-air by product by heating by an air transport device in the indirect cooling device as hot air feed, distributes to each burner noz(zle) as combustion air; Or send in the drying room as hot-air.
Burn till chilling and waste heat apparatus is according to a kind of kiln that said method proposed, a kind of kiln burns till chilling and residual heat using device, in kiln heat preservation zone and natural cooling zone one chilling transition zone is set, be provided with in the chilling transition zone and be used for the chilling device for cooling, described chilling device for cooling is an indirect cooling device, in indirect cooling device, be provided with and be used for, make the cooling cavity of indirect cooling device by cold air, in the cavity by being useful on the moving air of cooling indirect cooling device.Indirect cooling device makes indirect cooling device cooling by moving air, draws the heat of institute by chilling transition zone product by indirect cooling device again product is lowered the temperature.Be provided with the moving air input port on indirect cooling device, also be provided with the moving air delivery outlet, moving air will be heated to form hot-air through after the indirect cooling device; The air supply system of indirect cooling device moving air delivery outlet and the burner of clinkering zone and the air supply system by burner are connected with each burner, for each burner provides combustion-supporting hot-air; And the combustion air of burner is supplied with the place, moving air input port that blower fan is located at indirect cooling device, and supply with blower fan by combustion air and give indirect cooling device transport flow air earlier, the moving air that will heat in the indirect cooling device air supply system of sending into burner by pipeline is connected with each burner again.Also indirect cooling device moving air delivery outlet can be communicated with the hot-air input system of drying room, for drying room provides heated air source.
The advantage that this kiln burns till chilling and UTILIZATION OF VESIDUAL HEAT IN method and device is:
1, the present invention integrates consideration with firing zone and quench zone, the waste heat that makes full use of quench zone provides hot combustion air for the burner noz(zle) of firing zone, about can making the temperature of combustion air provide 400 ℃-600 ℃ to adopt, energy savings greatly, reach energy-efficient effect, according to preliminary test, for 24 hours uninterrupted sintering of same one two hole kiln, adopt conventional firing mode, need 1500m
3Natural gas, but only need 700m after adopting the present invention
3Natural gas, the solar term rate reaches more than 50%.
2, the present invention takes indirect cooling, is not to come chilling with the mode of blowing a cold wind over facing to product, and therefore cooling is relatively even, and therefore not being prone to product bursts phenomenon, can effectively improve the quality of products.
3, the present invention takes the chilling temperature of moving air control indirect cooling device, therefore as long as suitably adjust the temperature that the flow velocity of moving air just can effectively be controlled whole indirect cooling device, thereby effectively control the chilling temperature in chilling zone, the mode of this control temperature will be more easy.
4, the present invention takes the residual heat integrative utilization, can greatly save heat energy, can save 60% the energy than conventional kiln according to initial analysis.
Description of drawings
Fig. 1 is a system architecture schematic top plan view of the present invention;
Fig. 2 is a system architecture side direction structural representation of the present invention;
Fig. 3 is an indirect cooling device transversary schematic diagram of the present invention;
Fig. 4 is a clinkering zone transversary schematic diagram of the present invention;
Fig. 5 is the another kind of structural representation of indirect cooling device of the present invention;
Fig. 6 is the another kind of structure side schematic view of indirect cooling device of the present invention.
The specific embodiment
The invention will be further described below in conjunction with embodiment and accompanying drawing.
Described indirect heat absorption cooling system is in chilling transition zone 4 indirect cooling device 5 to be set, constantly in indirect cooling device 5, carry cold air by air transport device, cool off by the mobile indirect cooling device 5 that makes of cold air in indirect cooling device 5, form a chilling transition zone 4; When through the ceramic product of insulation during through over-quenching transition zone 4, again by indirect cooling device 5 constantly draw indirectly the heat by product, lower the temperature and make by product.
Described chilling transition zone 4 is one section zone between heat preservation zone 2 and natural cooling zone 3, and this zone is the temperature field of a temperature fusion, and is excessive to normal temperature rapidly by the high temperature of heat preservation zone; The design length of chilling transition zone 4 and shape have different structures according to kiln and product different.
Described indirect cooling device 5 is constantly drawn the heat of institute by product indirectly and is meant that indirect cooling device 5 passes through this regional product heat by air drawn in the chilling transition zone 4, when the product through insulation enters the chilling transition zone, to pass to air in this zone to heat, make the air heating; And indirect cooling device 5 will constantly be passed through draw heat the air of product by heating in chilling transition zone 4, make flow air heating in the indirect cooling device 5, and the air of heating is taken away heat with air flowing in indirect cooling device 5 again.
Hot-air in the described cooling system that will absorb heat indirectly behind the cooling products is transported to clinkering zone or drying room is meant being transported to clinkering zone 1 burner noz(zle) 8 places by the hot-air by product by heating by an air transport device 6 in the indirect cooling device 5 as hot air feed, distributes to each burner noz(zle) as combustion air; Or be transported to drying room 23 as the baking hot-air.
Embodiment one
A kind of kiln burns till quick cooling method and device, one chilling transition zone 4 is set between kiln heat preservation zone 2 and natural cooling zone 3, be provided with in chilling transition zone 4 and be used for the chilling device for cooling, described chilling device for cooling is an indirect cooling device 5, cavity 12 is arranged in indirect cooling device 5, the moving air (as shown in Figure 2) that flows through is arranged in the cavity 12, and indirect cooling device 5 flows in cavity 12 by moving air and cools off.Indirect cooling device 5 is on the kiln conveyer belt 14 that " ∏ " type covers on chilling transition region 4 parts, makes the indirect cooling device cooling by moving air, draws the heat of institute by chilling transition zone product by indirect cooling device again product is lowered the temperature.Moving air will be heated to form hot-air through after the indirect cooling device, and air transport device 6 is transported to clinkering zone (as shown in Figure 1).On indirect cooling device 5, be provided with moving air input port 13, also be provided with moving air delivery outlet 11; Air-in 13 and air-out 11 all are located at the top of indirect cooling device 5, and air-out 11 is located at one of low temperature, and air-out 11 is located at one of high temperature; And in indirect cooling device 5 cavitys 12 plate washer 17 is arranged, baffle plate 17 misplaces respectively and is located at the top or the lower part of indirect cooling device 5, makes moving air formation in cavity 12 shape flow regime of wandering up and down.Indirect cooling device 5 moving air delivery outlets 11 communicate by the air supply system 9 of pipeline 7 with the burner 8 of clinkering zone, and the arm 10 of the air supply system 9 by burner is connected with each burner 8, for each burner 8 provides combustion-supporting hot-air (as shown in Figure 3).And the combustion air of burner 8 is supplied with blower fan 16 and is located at outside the moving air input port of indirect cooling device 5 for the blower fan of air transport device simultaneously, link to each other (as shown in Figure 2) with moving air input port 13 by pipeline 15, and supply with blower fan 16 by combustion air and give indirect cooling device transport flow air earlier, the moving air that will heat in the indirect cooling device air supply system of sending into burner by pipeline is connected with each burner again.Indirect cooling device 5 moving air delivery outlets 11 can also be transported to drying room 23 by pipeline 24, as the hot-air of baking usefulness.
Embodiment two
Embodiment two is shown in accompanying drawing 5 and 6, be a kind of diplopore kiln quench zone cooling device, described quench zone cooling device is an indirect cooling device, comprise two kiln holes 18 and 19, and be respectively equipped with moving air input port 20 and 21 on each kiln hole, the cavity 12 that flows for moving air is arranged in the indirect cooling device, and the baffle plate 22 that has been dislocatedly distributed in cavity 12 is provided with the outlet 23 that moving air flows out in indirect cooling device by one of high-temperature region.The principle of present embodiment is the same with embodiment one, is the inlet of moving air in indirect cooling device by one of low temperature, moving air enters the quench zone of two kiln holes 18 and 19 respectively through the moving air input port 20 and 21 of low-temperature space, enter indirect cooling device cavity 12, form a kind of circuitous up and down flow air stream in obstruct by the outlet that enters the mouth through baffle plate 22, and the wall by indirect cooling device absorbs the heat of quench zone, makes the product cooling by quench zone; To cool off quench zone product institute heated hot air heated simultaneously and send into clinkering zone, and supply burner as combustion air.
Claims (10)
1, a kind of ceramic kiln emergency cooling mode and UTILIZATION OF VESIDUAL HEAT IN method, it is characterized in that: indirect heat absorption cooling system is set in kiln clinkering zone to the chilling transition zone that is incubated the back quench zone, make product obtain cooling by a kind of indirect heat absorption mode, and the hot-air behind the cooling products is transported to clinkering zone or drying room as hot air feed in the cooling system that will absorb heat indirectly in the chilling transition zone.
2, a kind of ceramic kiln emergency cooling mode as claimed in claim 1 and UTILIZATION OF VESIDUAL HEAT IN method, it is characterized in that: described indirect heat absorption cooling system is in the chilling transition zone indirect cooling device to be set, constantly in indirect cooling device, carry cold air by air transport device, cool off by the mobile indirect cooling device that makes of cold air in indirect cooling device, form a chilling transition zone; When through the ceramic product of insulation during through the over-quenching transition zone, again by indirect cooling device constantly draw indirectly the heat by product, lower the temperature and make by product.
3, a kind of ceramic kiln emergency cooling mode as claimed in claim 1 and UTILIZATION OF VESIDUAL HEAT IN method, it is characterized in that: described chilling transition zone is one section zone between heat preservation zone and natural cooling zone, this zone is the temperature field of a temperature fusion, and is excessive to normal temperature rapidly by the high temperature of heat preservation zone; The design length of chilling transition zone and shape have different structures according to kiln and product different.
4, a kind of ceramic kiln emergency cooling mode as claimed in claim 1 and UTILIZATION OF VESIDUAL HEAT IN method, it is characterized in that: described indirect cooling device is constantly indirectly drawn the heat of institute by product and is meant that indirect cooling device passes through in the chilling transition zone air drawn and pass through this regional product heat, when the product through insulation enters the chilling transition zone, to pass to air in this zone to heat, make the air heating; And indirect cooling device will constantly be passed through draw heat the air of product by heating in the chilling transition zone, make flow air heating in the indirect cooling device, take away heat with air flowing in indirect cooling device again.
5, a kind of ceramic kiln emergency cooling mode as claimed in claim 1 and UTILIZATION OF VESIDUAL HEAT IN method, it is characterized in that: the hot-air in the described cooling system that will absorb heat indirectly behind the cooling products is transported to clinkering zone or drying room is meant being transported to clinkering zone burner noz(zle) place by the hot-air by product by heating by an air transport device in the indirect cooling device as hot air feed, distributes to each burner noz(zle) as combustion air.
6, a kind of ceramic kiln emergency cooling mode and residual heat using device, in kiln heat preservation zone and natural cooling zone one chilling transition zone is set, be provided with in the chilling transition zone and be used for the chilling device for cooling, it is characterized in that: described chilling device for cooling is an indirect cooling device, in indirect cooling device, be provided with and be used to pass through cold air, make the cooling cavity of indirect cooling device, cavity is interior by being useful on the moving air of cooling indirect cooling device; Indirect cooling device makes indirect cooling device cooling by moving air, draws the heat of institute by chilling transition zone product by indirect cooling device again product is lowered the temperature; Be provided with the moving air input port on indirect cooling device, also be provided with the moving air delivery outlet, moving air will be heated to form hot-air through after the indirect cooling device.
7, a kind of ceramic kiln emergency cooling mode as claimed in claim 6 and residual heat using device, described indirect cooling device moving air delivery outlet communicates with clinkering zone air supply system or drying room, provides hot-air for burning clinkering zone air supply system or drying room.
8, a kind of ceramic kiln emergency cooling mode as claimed in claim 6 and residual heat using device, it is characterized in that: described indirect cooling device 5 is on the kiln conveyer belt 14 that " ∏ " type covers on chilling transition region 4 parts, make indirect cooling device cooling by moving air, draw the heat of institute by chilling transition zone product by indirect cooling device again product is lowered the temperature.
9, a kind of ceramic kiln emergency cooling mode as claimed in claim 6 and residual heat using device, it is characterized in that: the combustion air of described burner is supplied with the place, moving air input port that blower fan is located at indirect cooling device, and supply with blower fan by combustion air and give indirect cooling device transport flow air earlier, the moving air that will heat in the indirect cooling device air supply system of sending into burner by pipeline is connected with each burner again.
10, a kind of ceramic kiln emergency cooling mode as claimed in claim 6 and residual heat using device, it is characterized in that: described quench zone cooling device comprises two kiln holes, and be respectively equipped with the moving air input port on each kiln hole, the cavity that flows for moving air is arranged in the indirect cooling device, the baffle plate that has been dislocatedly distributed in cavity is provided with the outlet that moving air flows out in indirect cooling device by one of high-temperature region.
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| CN200910043067A CN101520278A (en) | 2009-04-08 | 2009-04-08 | Ceramic kiln emergency cooling mode, method and device for using waste heat |
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| CN200910043067A CN101520278A (en) | 2009-04-08 | 2009-04-08 | Ceramic kiln emergency cooling mode, method and device for using waste heat |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022912A (en) * | 2010-12-18 | 2011-04-20 | 佛山市中瓷万丰陶瓷设备有限公司 | Energy-saving building porcelain kiln having waste-heat recovery system |
| CN104132553A (en) * | 2014-07-31 | 2014-11-05 | 广西北流仲礼瓷业有限公司 | Kiln waste heat utilizing system |
| CN108106443A (en) * | 2017-10-31 | 2018-06-01 | 夹江县盛世东方陶瓷有限公司 | A kind of exhaust gas recovery system |
| CN112759412A (en) * | 2019-10-21 | 2021-05-07 | 佛山金意绿能新材科技有限公司 | Method for preparing foamed ceramic by using ceramic production waste |
| CN112762709A (en) * | 2019-10-21 | 2021-05-07 | 佛山金意绿能新材科技有限公司 | Sintering and cooling process of foamed ceramic |
-
2009
- 2009-04-08 CN CN200910043067A patent/CN101520278A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022912A (en) * | 2010-12-18 | 2011-04-20 | 佛山市中瓷万丰陶瓷设备有限公司 | Energy-saving building porcelain kiln having waste-heat recovery system |
| CN102022912B (en) * | 2010-12-18 | 2013-02-20 | 佛山市中瓷万丰陶瓷设备有限公司 | Energy-saving building porcelain kiln having waste-heat recovery system |
| CN104132553A (en) * | 2014-07-31 | 2014-11-05 | 广西北流仲礼瓷业有限公司 | Kiln waste heat utilizing system |
| CN108106443A (en) * | 2017-10-31 | 2018-06-01 | 夹江县盛世东方陶瓷有限公司 | A kind of exhaust gas recovery system |
| CN112759412A (en) * | 2019-10-21 | 2021-05-07 | 佛山金意绿能新材科技有限公司 | Method for preparing foamed ceramic by using ceramic production waste |
| CN112762709A (en) * | 2019-10-21 | 2021-05-07 | 佛山金意绿能新材科技有限公司 | Sintering and cooling process of foamed ceramic |
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Application publication date: 20090902 |