CN201129859Y - Colorful coating layer steel plate air cooking furnace - Google Patents
Colorful coating layer steel plate air cooking furnace Download PDFInfo
- Publication number
- CN201129859Y CN201129859Y CNU2007203069659U CN200720306965U CN201129859Y CN 201129859 Y CN201129859 Y CN 201129859Y CN U2007203069659 U CNU2007203069659 U CN U2007203069659U CN 200720306965 U CN200720306965 U CN 200720306965U CN 201129859 Y CN201129859 Y CN 201129859Y
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- heat exchanger
- steel plate
- heat
- incinerator
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Abstract
The utility model relates to a color coating layer steel plate hot air oven, which comprises an incinerator, a first and a second heat exchangers, a fresh air draught fan, a first and a second waste gas draught fans and an initial precise coating oven which is respectively provided with a first and a second heating segment and a hot air circulating segment, a first and a second waste discharging holes of the initial precise coating oven are connected with a first and a second waste gas pipes, the first and the second waste gas pipes are connected with the air inlets of the first and the second waste gas draught fans, the air outlets of the first and the second waste gas draught fans are connected with the first heat exchanger, and the first heat exchanger is connected with an incinerator waste gas lead-in tube of the incinerator, a high-temperature smoke gas draw-off tube of the incinerator is connected with the first and the second heat exchangers, the second heat exchanger is connected with a first and a second circulating draught fans of the initial precise coating oven through the fresh hot air pipe, and the first and the second heat exchangers are connected with the smoke draw-off tube together. The utility model is characterized in that the color coating layer steel plate hot air oven also comprises a third heat exchanger, and the third heat exchanger is respectively connected with the fresh air draught fan, the smoke draw-off tube and the second heat exchanger. The color coating layer steel plate hot air oven has the advantages of excellent energy-saving effect.
Description
Technical field
The utility model relates to a kind of chromatic clad steel plate hot-blasting oven, is the improvement to the chromatic clad steel plate hot-blasting oven in the prior art.
Background technology
Since nineteen fifty-five, the continuous coated production line of the first band steel built up in the world, the production of color coating layer steel plate (industry also abbreviates color painted steel strip as) has obtained developing rapidly, with regard to China, an existing up to now production line surplus in the of 300 nearly mainly is distributed in East China, North China.
The production technology of color coating layer steel plate (abbreviation color coated steel sheet) is generally two and is coated with two bakings, so-called two are coated with two bakings is: first rendering baking, essence is coated with baking again, rendering oven and essence are coated with oven and are called for short (just, essence is coated with baker) shared cover hot-air stove, a whole set of hot-air stove adopts disposable clean hot blast to heat to steel plate for oven after the incinerator heat exchange, and the waste gas after the heating circulates once more to enter and directly enters atmosphere after incinerator burns oxygen supply for incinerator.Just, essence is coated with respectively four independently heat supplies in the baker, the hot air circulation section, during ordinary production, natural gas is after the incinerator burning produces high-temperature flue gas, in stove, enter in the spray box in the oven with the part furnace gas that circulates under the effect of circulating fan, coating by spray orifice heating tape steel (steel band) and baking belt steel surface, and constantly extracting the furnace gas that oven includes volatile organic bath agent, exhaust gas fan enters incinerator, natural gas after preliminary heat exchange in incinerator burns to be chewed under the combustion, and organic solvent passes through induced-draft fan in company with the high-temperature flue gas that burning produces after heat exchanger reclaims heat, chimney row is to atmosphere.
The concrete structure of above-mentioned chromatic clad steel plate hot-blasting oven is by shown in Figure 1, comprise incinerator 1, first, second heat exchanger 2,3, new wind blower fan 4, first, the second exhaust gas fan 5a, 5b, just, essence is coated with baker 6,7, concrete operation principle is: just, essence is coated with baker 6,7 waste gas that produced are respectively by first, second flue gas leading 62,72 introduce first, the second exhaust gas fan 5a, the air inlet of 5b, by first, the second exhaust gas fan 5a, waste gas is introduced first epicoele 21 of first heat exchanger 2 in the gas outlet of 5b through the waste gas inlet tube 25 of first heat exchanger 2, enter first cavity of resorption 23 of first heat exchanger 2 through the tube chamber of one group of first heat exchanger tube 22 of first heat exchanger 2, first cavity of resorption 23 is introduced incinerator 1 burning by incinerator waste gas inlet tube 11, the high-temperature flue gas that the burning back produces introduces first respectively by high-temperature flue gas fairlead 12, second heat exchanger 2,3, by the waste gas heating of the high-temperature flue gas that enters into first heat exchanger 2 to described first heat exchanger tube 22, and by the fresh air heating of the high-temperature flue gas that enters into second heat exchanger 3 to second heat exchanger tube 32, meanwhile, second epicoele 31 of second heat exchanger 3 introduced fresh air by its fresh air pipeline 41 by new wind blower fan 4, enter second cavity of resorption 33 of second heat exchanger 3 through the tube chamber of one group of second heat exchanger tube 32 of second heat exchanger 3, new hot-air in second cavity of resorption 33 is through first of new hot-blast pipe line 34, second arm 341,342 introduce respectively at the beginning of, essence is coated with baker 6,7 first, second circulating fan 61,71, and then by first, second circulating fan 61,71 first, second circulation line 611,711 draw respectively and just, essence is coated with baker 6,7 body of heater is interior at the beginning of passing through, essence is coated with baker 6, steel band baking in 7, and just, essence is coated with baker 6, the waste gas that is produced by baking in 7 is through first, second flue gas leading 62,72 are incorporated into first, the second exhaust gas fan 5a, 5b, circulation so again and again, high-temperature flue gas fairlead 12 is incorporated into first, second heat exchanger 2,3 high-temperature flue gas warp is to described first, second heat exchanger tube 22, after 32 heat exchange temperature step-down flue gas then by being linked in first respectively, second heat exchanger 2, smoke exhaust pipe 24 on 3 is introduced chimney and is effluxed.
The existing outstanding problem of the chromatic clad steel plate hot-blasting oven of said structure is the heat that is not enough to reclaim fully in the waste gas, because cause first respectively from high-temperature flue gas fairlead 12, second heat exchanger 2,3 and first, second heat exchanger tube 22, though the flue-gas temperature after 32 heat exchange has had decline, but still be very high, therefore higher from the flue-gas temperature or the title waste discharge temperature of smoke exhaust pipe 24 chimney that drains into, be about about 280-440 ℃, thereby caused the incineration temperature of incinerator need keep 680-730 ℃ usually, obviously, cause waste, with the conservation-minded society of advocating at present to the energy, economizing economy is incompatible.
Also have, as mentioned above and as is known in the industry and then by shown in Figure 1, just, essence is coated with respectively four independently first, second heat supplies, hot air circulation section 64,74 in the baker 6,7, but at present to just, essence is coated with baker 6,7 respectively to establish unique first, second waste discharge mouth 63,73 is outlet port, that is to say that four shared waste discharge mouths of section introduce first, second exhaust gas fan 5a, 5b for first, second flue gas leading 62,72 respectively.Although the waste discharge mouth is arranged in the centre of four sections, promptly be arranged between second, third section, but only depend on a unique waste discharge mouth to be difficult to ensure the furnace pressure balance, the phenomenon that fire door mixes cold wind often occurs, this phenomenon also can constitute a factor that wastes energy.
Summary of the invention
Top priority of the present utility model is will provide a kind of can reclaim the heat in the waste gas effectively and use the chromatic clad steel plate hot-blasting oven that the furnace temperature that reduces incinerator embodies energy savings.
An also task of the present utility model be to provide a kind of and can ensure just, the furnace pressure balance of four sections that essence is coated with baker and use and avoid fire door to mix the chromatic clad steel plate hot-blasting oven that cold wind embodies further energy savings.
Top priority of the present utility model is finished like this, a kind of chromatic clad steel plate hot-blasting oven, it comprises incinerator, first, second heat exchanger, new wind blower fan, first, second exhaust gas fan, difference each tool more than one first, second heat supply, at the beginning of the hot air circulation section, essence is coated with baker, just, essence is coated with first of baker, the second waste discharge mouth is respectively with first, second flue gas leading connects, first, second flue gas leading is respectively with first, the air inlet of second exhaust gas fan connects, and first, the gas outlet of second exhaust gas fan is connected with first heat exchanger, first heat exchanger is connected with the incinerator waste gas inlet tube of incinerator, and the high-temperature flue gas fairlead of incinerator is respectively with first, second heat exchanger connects, second heat exchanger by new hot-blast pipe line respectively with just, essence is coated with first of baker, second circulating fan connects, and first, second heat exchanger jointly is connected with smoke exhaust pipe, characteristics are: also include one the 3rd heat exchanger, the 3rd heat exchanger is connected with the smoke exhaust pipe and second heat exchanger with described new wind blower fan respectively.
For finishing an also task of the present utility model, the quantity of described first, second waste discharge mouth is to equate with the quantity of described first, second heat supply, hot air circulation section respectively.
In a specific embodiment of the present utility model, described the 3rd heat exchanger comprises casing, one group of the 3rd heat exchanger tube, demarcation strip, new wind-heat pipe, waste pipe, demarcation strip is located at the nearly middle part in the case chamber of casing, and constitute sealing between the inwall in case chamber, and with the case chamber be separated into do not connect each other on, the nowel chamber, one group of the 3rd heat exchanger tube vertically is arranged in the case chamber, on, the lower end lays respectively at, in the nowel chamber, the middle part constitutes sealing with demarcation strip, one end of new wind-heat pipe communicates with the top box chamber, and the other end communicates with second heat exchanger, one end of waste pipe communicates with the nowel chamber, and the other end communicates with the waste discharge chimney, described new wind blower fan, smoke exhaust pipe respectively with described on, the nowel chamber communicates.
In another specific embodiment of the present utility model, the outer wall of described the 3rd heat exchanger tube is formed with fin.
Go back in the specific embodiment of the present utility model, be provided with heat-conducting medium in the tube chamber of described the 3rd heat exchanger tube.
In another specific embodiment of the present utility model, described heat-conducting medium is diphenyl mixture or conduction oil.
In another specific embodiment of the present utility model, be respectively equipped with first, second control valve on described first, second waste discharge mouth.
The advantage of the technical scheme that the utility model is recommended: owing to set up the 3rd heat exchanger, therefore can the flue gas that the temperature of being discharged by smoke exhaust pipe in first, second heat exchanger is about about 280-440 ℃ further be utilized be incorporated into the new wind heating in the 3rd heat exchanger by new wind blower fan by the 3rd heat exchanger, make finally and reduce to 100-250 ℃ to the EGT of waste discharge chimney by waste pipe row, the incineration temperature that makes incinerator simultaneously is reduced to 500-550 ℃ from original 680-730 ℃, therefore has good energy-saving effect.
Description of drawings
Fig. 1 is the schematic diagram of the chromatic clad steel plate hot-blasting oven in the prior art.
Fig. 2 is the schematic diagram of the utility model chromatic clad steel plate hot-blasting oven.
Fig. 3 is the three-dimensional structure diagram of second heat exchanger of the present utility model.
Fig. 4 is an example structure figure of the 3rd heat exchanger of the present utility model.
The specific embodiment
See also Fig. 2 and Fig. 3, for first, that essence is coated with baker 6,7 structure and function, be identical with prior art, rendering baker 6 is used for by the surface to steel plate 9 such as the mixture coated baking of epoxy resin, polyester, polyurethane, water-based acrylic etc., and the smart baker 7 that is coated with is used for by the surface to the steel plate 9 after first baking the such as the mixture coated baking of polyester, silicon modified polyester, Kynoar, plastisol etc.Just, essence is coated with baker 6,7 that four sections are respectively arranged respectively, that is: rendering baker 6 has four first heat supplies, hot air circulation section 64; And essence is coated with baker 7 four second heat supplies, hot air circulation section 74 are arranged also.To warm-air supply first, that essence is coated with baker 6,7 is to take on to first, second circulation line 611,711 by first, second circulating fan 61,71 that communicates with the burner hearth of body of heater, and on first, second circulation line 611,711, be respectively equipped with first, second control and regulation valve 6111,7111, use the input quantity of regulating new hot blast.As described above, since provide just, essence is coated with baker 6,7 that four first, second heat supplies, hot air circulation section 64,74 are arranged respectively, therefore, corresponding first, second circulating fan 61,71 also has four, be connected with first, second arm 341,342 of new hot-blast pipe line 34 respectively, that is to say by new hot-blast pipe line 34 and import the hot-air that is used for steel plate 9 air cookings in the stove first, that essence is coated with baker 6,7, the high-temperature flue gas that produces in the bake process is then being taken on the effect of discharging by first, second waste discharge mouth 63,73.
In this application, the applicant respectively establishes one first waste discharge mouth 63 to four first heat supplies, the hot air circulation section 64 of rendering baker 6, with example four second heat supplies, hot air circulation section 74 that essence is coated with baker 7 are also respectively established one second waste discharge mouth 73, therefore can avoid furnace pressure unbalance, prevent that extraneous cold wind from entering fire door and causing the furnace heat loss, so also have the effect of energy savings.On each first, second waste discharge mouth 63,73, be respectively arranged with first, second control valve 631,731, be used to regulate the waste discharge amount.First, second waste discharge mouth 63,73 is connected with first, second flue gas leading 62,72 respectively and communicates, and first, second flue gas leading 62,72 docks with the air inlet of first, second exhaust gas fan 5a, 5b respectively, the gas outlet of first, second exhaust gas fan 5a, 5b jointly with waste gas inlet tube 25 UNICOMs of first heat exchanger 2.
Please in conjunction with Fig. 3, the structure of the second given heat exchanger 3 is identical with first heat exchanger 2.Converge by first, second exhaust gas fan 5a, 5b and to deliver to first epicoele 21 that high-temperature flue gas in the waste gas inlet tube 25 enters into first heat exchanger 2, and then enter in first cavity of resorption 23 by the tube chamber that is located at first heat exchanger, 2 intrinsic one group of first heat exchanger tube 22, introduce incinerators 1 by incinerator waste gas inlet tube 11 again and burn, the used energy of incinerator 1 is preferred but what be not limited to is natural gas.Natural gas and the high-temperature flue gas of oven furnace gas after incinerator 1 burns that contains volatile organic solvent are divided into two-way by high-temperature flue gas fairlead 12 and supply with first, second heat exchanger 2,3 respectively, respectively with first heat exchanger 2 in first heat exchanger tube 22, second heat exchanger tube 32 in second heat exchanger 3 carry out heat exchange.The high-temperature flue gas that is caused by high-temperature flue gas fairlead 12 in first, second heat exchanger 2,3 is introduced in the 3rd heat exchanger 8 that technical solutions of the utility model set up by the arm 241 of smoke exhaust pipe 24.
See also Fig. 4 and continuation in conjunction with Fig. 1, by arm 241 flue gas is introduced in the case chamber 811 of casing 81 of the 3rd heat exchanger 8, more specifically in the nowel chamber 8112 in leading-in box chamber 811, bottom heat exchange (heating) to one group of the 3rd heat exchanger tube 82 being arranged in case chamber 811, the principle of utilizing heat to transmit, by the bottom of the 3rd heat exchanger tube 82 with the top of heat transferred by the 3rd heat exchanger tube 82 that is arranged in top box chamber 8111 of demarcation strip 83 sealed separation.Preferred scheme is, the outer wall of the 3rd heat exchanger tube 82 is processed the fin 821 that is used to increase heat transfer area, can also annotate heat-conducting medium in advance in the tube chamber 822 of the 3rd heat exchanger tube 82, as heat-conducting medium such as conduction oil or diphenyl mixture, even can be water.Show by Fig. 4 is clear, the top box chamber 8111 of the 3rd heat exchanger 8 links by fresh air pipeline 41 and new wind blower fan 4, that is to say, new wind is introduced in the top box chamber 8111 through fresh air pipeline 41 by new wind blower fan 4, and then the new wind-heat pipe 84 of warp causes in second epicoele 31 of second heat exchanger 3, draw and second cavity of resorption 33 through one group of second heat exchanger tube 32, for described new hot-blast pipe line 34 draw deliver at the beginning of, essence is coated with baker 6,7 first, second circulating fan 61,71, work so again and again, and from the arm 241 of smoke exhaust pipe 24 be incorporated into the nowel chamber 8112 flue gas through with the bottom heat exchange of the 3rd heat exchanger tube 82 after temperature be reduced to 100-250 ℃, and the waste pipe 85 through communicating with nowel chamber 8112 drains into waste discharge chimney 851.In said process, the flue gas that is about 280-440 ℃ owing to the temperature that will come from first, second heat exchanger 2,3 by the 3rd heat exchanger 8 carries out heat exchange once more, promptly utilize this heat energy that the new wind of being introduced by new wind blower fan 4 is heated, therefore for incinerator 1, has remarkable energy saving effect, specifically be reflected in the temperature that can make incinerator 1 and reduce to 500-550 ℃ by the 680-730 in the prior art ℃, depreciation (range of decrease) has reached 180 ℃.With the thickness of producing 150000 tons per year is that the gait of march of 0.5mm, steel plate 9 is that the chromatic clad steel plate hot-blasting oven of 110m/min is an example, and the consumption of natural gas is 280-350m
3/ h, however if adopt prior art for example by oven shown in Figure 1, the consumption of natural gas is 650-800m
3/ h knows therefrom, can save 5,000,000 yuan energy consumption cost (calculating by every cubic metre current industrial natural gas price).Obviously, the utility model scheme is ultimate attainment.
Claims (7)
1, a kind of chromatic clad steel plate hot-blasting oven, it comprises incinerator (1), first, second heat exchanger (2,3), new wind blower fan (4), first, second exhaust gas fan (the 5a, 5b), difference each tool more than one first, second heat supply, hot air circulation section (64,74) at the beginning of, essence is coated with baker (6,7), just, essence is coated with baker (6,7) first, the second waste discharge mouth (63,73) respectively with first, second flue gas leading (62,72) connect, first, second flue gas leading (62,72) respectively with first, second exhaust gas fan (the 5a, air inlet 5b) connects, and first, second exhaust gas fan (the 5a, gas outlet 5b) is connected with first heat exchanger (2), first heat exchanger (2) is connected with the incinerator waste gas inlet tube (11) of incinerator (1), and the high-temperature flue gas fairlead (12) of incinerator (1) is respectively with first, second heat exchanger (2,3) connect, second heat exchanger (3) by new hot-blast pipe line (34) respectively with just, essence is coated with baker (6,7) first, second circulating fan (61,71) connect, and first, second heat exchanger (2,3) jointly be connected with smoke exhaust pipe (24), it is characterized in that also including one the 3rd heat exchanger (8), the 3rd heat exchanger (8) is connected with smoke exhaust pipe (24) and second heat exchanger (3) with described new wind blower fan (4) respectively.
2, chromatic clad steel plate hot-blasting oven according to claim 1, the quantity that it is characterized in that described first, second waste discharge mouth (63,73) are to equate with the quantity of described first, second heat supply, hot air circulation section (64,74) respectively.
3, chromatic clad steel plate hot-blasting oven according to claim 1, it is characterized in that described the 3rd heat exchanger (8) comprises casing (81), one group of the 3rd heat exchanger tube (82), demarcation strip (83), new wind-heat pipe (84), waste pipe (85), demarcation strip (83) is located at the nearly middle part in the case chamber (811) of casing (81), and constitute sealing between the inwall of case chamber (811), and with case chamber (811) be separated into do not connect each other on, nowel chamber (8111,8112), one group of the 3rd heat exchanger tube (82) vertically is arranged in the case chamber (811), on, the lower end lays respectively at, nowel chamber (8111,8112) in, the middle part constitutes sealing with demarcation strip (83), one end of new wind-heat pipe (84) communicates with top box chamber (8111), and the other end communicates with second heat exchanger (3), one end of waste pipe (85) communicates with nowel chamber (8112), and the other end communicates with waste discharge chimney (851), described new wind blower fan (4), smoke exhaust pipe (24) respectively with described on, nowel chamber (8111,8112) communicate.
4, chromatic clad steel plate hot-blasting oven according to claim 3 is characterized in that the outer wall of described the 3rd heat exchanger tube (82) is formed with fin (821).
5, chromatic clad steel plate hot-blasting oven according to claim 3 is characterized in that being provided with heat-conducting medium in the tube chamber (822) of described the 3rd heat exchanger tube (82).
6, chromatic clad steel plate hot-blasting oven according to claim 5 is characterized in that described heat-conducting medium is diphenyl mixture or conduction oil.
7, chromatic clad steel plate hot-blasting oven according to claim 2 is characterized in that being respectively equipped with on described first, second waste discharge mouth (63,73) first, second control valve (631,731).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203069659U CN201129859Y (en) | 2007-11-16 | 2007-11-16 | Colorful coating layer steel plate air cooking furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203069659U CN201129859Y (en) | 2007-11-16 | 2007-11-16 | Colorful coating layer steel plate air cooking furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201129859Y true CN201129859Y (en) | 2008-10-08 |
Family
ID=40017713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007203069659U Expired - Lifetime CN201129859Y (en) | 2007-11-16 | 2007-11-16 | Colorful coating layer steel plate air cooking furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201129859Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103575085A (en) * | 2012-07-31 | 2014-02-12 | 苏州福斯特光伏材料有限公司 | Combustion disposing, drying and heating integrated unit for organic waste gas emitted by coater |
| CN110756410A (en) * | 2019-11-05 | 2020-02-07 | 武汉钢铁有限公司 | Method for eliminating positive pressure of baking oven of color coating unit |
-
2007
- 2007-11-16 CN CNU2007203069659U patent/CN201129859Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103575085A (en) * | 2012-07-31 | 2014-02-12 | 苏州福斯特光伏材料有限公司 | Combustion disposing, drying and heating integrated unit for organic waste gas emitted by coater |
| CN103575085B (en) * | 2012-07-31 | 2016-04-20 | 苏州福斯特光伏材料有限公司 | A kind of organic exhaust gas burning process of coating machine discharge and oven dry heating combined unit |
| CN110756410A (en) * | 2019-11-05 | 2020-02-07 | 武汉钢铁有限公司 | Method for eliminating positive pressure of baking oven of color coating unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20071116 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |