CN1739868A - Steel belt coating stoving method and apparatus - Google Patents

Steel belt coating stoving method and apparatus Download PDF

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Publication number
CN1739868A
CN1739868A CN 200510019090 CN200510019090A CN1739868A CN 1739868 A CN1739868 A CN 1739868A CN 200510019090 CN200510019090 CN 200510019090 CN 200510019090 A CN200510019090 A CN 200510019090A CN 1739868 A CN1739868 A CN 1739868A
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China
Prior art keywords
flue gas
gas
incinerator
heat exchange
oven
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Pending
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CN 200510019090
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Chinese (zh)
Inventor
何予
宋建芝
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Zhongye Continuous Casting Technology Engineering Co Ltd
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Zhongye Continuous Casting Technology Engineering Co Ltd
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Application filed by Zhongye Continuous Casting Technology Engineering Co Ltd filed Critical Zhongye Continuous Casting Technology Engineering Co Ltd
Priority to CN 200510019090 priority Critical patent/CN1739868A/en
Publication of CN1739868A publication Critical patent/CN1739868A/en
Pending legal-status Critical Current

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Abstract

The steel belt coating stoving method and apparatus features that clean air is first heated with the hot fume from the incinerator inside the gas/gas heat exchanger and then used in stove the steel belt coating inside roasting oven; the solvent containing waste gas produced during the stoving of the steel belt coating is first heated with the hot fume inside one other gas/gas heat exchanger and then burnt in the incinerator; and the hot fume from the incinerator is heat exchanged in these two gas/gas heat exchangers before being exhausted to atmosphere. The apparatus includes roasting oven, incinerator, air/fume heat exchanger and waste gas/fume heat exchanger connected via pipeline and blower. The present invention has raised stoved steel belt quality, lowered cost and reduced environmental pollution.

Description

The baking method and the device of band steel coating
Technical field
In the coloured coating production line of all kinds of metallurgic products, mostly be provided with the oven that is used to dry coating.Cold-strip steel coloured coating tinuous production for example, its process section just is provided with priming paint and finish paint oven, be arranged in the coating chamber of priming paint and finish paint after, in order to the painting of oven dry belt steel surface institute.These coating production lines have and one are coated with a baking, two are coated with two bakings, three-coat three-baking etc., just being coated with once with regard to oven dry tinuous production once is exactly one to be coated with a baking, the art of this patent is to be applied in all kinds of continuous multicolor coating production lines, in order to the coating of oven dry belt steel surface.
Background technology
Mostly the oven of cold-strip steel coloured coating tinuous production is that the hot flue gas that adopts fuel combustion to produce directly heat and toast the band steel, owing to containing pollutant such as flue dust in the combustion product gases, can belt steel surface be polluted, thereby influences the quality of painting.And in bake process, volatile solvent gas in the coating (as paint) is constantly overflowed, and in oven, assemble, this solvent gas (hereinafter to be referred as waste gas) that contains is poisonous flammable dusty gas, when solvent strength reaches explosion limit, just might set off an explosion, therefore must constantly extract the waste gas in the stove out.
In the past, the waste gas that big multiple production line will constantly be extracted out directly enters atmosphere, severe contamination surrounding environment, also have for reaching environmental requirement, in the waste discharge air pipe, incinerator is set, with emptying behind the burned waste gas.But because incineration temperature has relatively high expectations, it is higher therefore to burn energy consumption, increases production cost greatly.
Summary of the invention
The purpose of this invention is to provide a kind of baking method and device with steel coating, to toast and burning organically combines, both solved the pernicious gas environmental pollution problem, liberated heat heating tape steel when utilizing the volatile ingredient burning again, flue gas heat after burning is fully recycled, improve product quality, reduced production cost.
Technical scheme of the present invention is: the baking method of band steel coating is characterized in that: the hot flue gas with incinerator heats clean air in gas/gas heat exchanger, with hot-air drying belt steel coating in oven; The solvent waste gas that contains that produces in oven during with baking band steel is sent into another gas/gas heat exchanger, sends into incinerator after the hot flue gas heating with incinerator and burns; The hot flue gas that incinerator is discharged is discharged into atmosphere through after above-mentioned two gas/gas heat exchanger heat exchange.
The apparatus for baking of band steel coating, it comprises oven and incinerator, it is characterized in that: also comprise air/flue gas heat exchange device and waste gas/flue gas heat exchange device, connect in the following manner by pipeline between them:
Air/flue gas heat exchange device has cleaned air inlet, clean hot air outlet, high-temperature flue gas entry, low-temperature flue gas outlet; Its high-temperature flue gas entry is communicated with the high-temperature flue gas outlet of incinerator, and its clean hot air outlet is communicated with the oven hot air inlet, and its cleaned air inlet and low-temperature flue gas outlet are communicated with atmosphere;
The exhaust gas entrance of incinerator is communicated with the waste gas outlet of waste gas/flue gas heat exchange device, and the high-temperature flue gas outlet is communicated with the high-temperature flue gas entry of air/flue gas heat exchange device and waste gas/flue gas heat exchange device;
Waste gas/the exhaust gas entrance of flue gas heat exchange device is communicated with the waste gas outlet of oven, and the low-temperature flue gas outlet is communicated with atmosphere.
This method and device can improve the quality of product with clean hot-air baking band steel coating; the waste gas of oven is used as the combustion-supporting gas of incinerator; the flammable dusty gas wherein that is after-flame utilizes again its waste heat descends producing cost and has protected environment again.
Description of drawings
Fig. 1 is the structural representation of embodiments of the invention.
Wherein, air/flue gas heat exchange 1 device, cleaned air inlet 1-1, clean hot air outlet 1-2, low-temperature flue gas outlet 1-3, high-temperature flue gas entry 1-4;
Incinerator 2, high-temperature flue gas outlet 2-1, combustion chamber 2-2, exhaust gas entrance 2-3, nozzle 2-4, burning gases inlet 2-5;
Waste gas/flue gas heat exchange device 3, exhaust gas entrance 3-1, waste gas outlet 3-2, high-temperature flue gas entry 3-4;
Topcoat oven 4, waste gas outlet pipe 4-1, drying tunnel 4-2, hot air inlet 4-3, band steel upper surface heat supply airduct 4-4, band steel lower surface heat supply airduct 4-5;
Primer coating oven 5, waste gas outlet pipe 5-1 drying tunnel 5-2, hot air inlet 5-3, band steel upper surface heat supply airduct 5-4, band steel lower surface heat supply airduct 5-5;
Pipeline 6, blower fan 7 (circulating fan, waste discharge blower fan, air blower, smoke exhaust fan), band steel 8.
Concrete embodiment
Embodiments of the invention are to be applied in two to be coated with on the tinuous productions of two bakings, are respectively equipped with priming coat and finishing coat oven in the apparatus for baking, are arranged in after the coating machine that corresponding primary coat and face be coated with, in order to the coating of oven dry belt steel surface.
Referring to Fig. 1.The embodiment of the invention as shown in Figure 1, it comprises oven 4,5 and incinerator 2, it is characterized in that: also comprise air/flue gas heat exchange device 1 and waste gas/flue gas heat exchange device 2, be connected with blower fan 7 by pipeline 6 between them.
Air/flue gas heat exchange device 1 has cleaned air inlet 1-1, clean hot air outlet 1-2, high-temperature flue gas entry 1-4, low-temperature flue gas outlet 1-3; Its high-temperature flue gas entry 1-4 is communicated with the high-temperature flue gas outlet 2-1 of incinerator, and its clean hot air outlet 1-2 is communicated with oven hot air inlet 4-3,5-3, and its cleaned air inlet 1-1 and low-temperature flue gas outlet 1-3 are communicated with atmosphere;
The exhaust gas entrance 2-3 of incinerator is communicated with the waste gas outlet 3-2 of waste gas/flue gas heat exchange device, and high-temperature flue gas outlet 2-1 is communicated with high-temperature flue gas entry 1-4, the 3-4 of air/flue gas heat exchange device 1 and waste gas/flue gas heat exchange device 2;
The exhaust gas entrance 3-1 of waste gas/flue gas heat exchange device 3 is communicated with the waste gas outlet pipe 4-1 of oven, and low-temperature flue gas outlet 3-3 is communicated with atmosphere.
Primer coating oven 5 is arranged in after the coating machine of primary coat, in order to the priming coat of oven dry belt steel surface; After the coating machine that topcoat oven 4 faces of being arranged in are coated with, in order to the finishing coat of oven dry belt steel surface.Band steel 8 is passed by from primer coating oven 5 and topcoat oven 4 successively, finishes the oven dry of belt steel surface coating.
The baking of present embodiment partly is traditional device, mainly is made up of drying tunnel, bellows, circulating fan and circulation airduct, waste discharge tracheae etc.
The burning part of present embodiment also is made up of traditional incinerator, air/flue gas heat exchange device, waste gas/flue gas heat exchange device, waste discharge blower fan, air blower, smoke exhaust fan and air supply line etc.
During device work, all blower fans in the starting drive at first, (incinerator can adopt various coal gas to light the incinerator burner then, natural gas and liquefied petroleum gas etc. are done fuel, combustion air is the waste gas that comes from oven), the hot flue gas that incinerator is discharged is heated to uniform temperature by (air/flue gas) heat exchanger with cold cleaned air, hot cleaned air after the heating is transported to oven by air duct, and mix with recyclegas in the oven, send into bellows by circulating fan again, and spray by the bellows nozzle, in order to heating and baking band steel, the solvent waste gas that contains that produces in oven during baking band steel is extracted out by the waste discharge blower fan, by (waste gas/flue gas) heat exchanger heating back (further utilizing flue gas heat), send into incinerator and burn.The flue gas that incinerator is discharged is sent into chimney by the induced-draft fan extraction and is discharged into atmosphere through behind above-mentioned two heat exchangers.For better regulating the temperature of oven, the oven part also is provided with a cover supply cold wind device, is made up of blower fan and cool air hose.Cold wind is delivered in the preceding circulation airduct of circulating fan, mixes with recyclegas and hot-air, reaches the purpose of regulating wind-warm syndrome.
But all online automatic detection and controls such as the furnace temperature of whole device, furnace pressure, band temperature, gas temperature, waste gas discharge capacity, fuel flow rate and oven solvent strength.
This device characteristic
This device has both solved the pernicious gas environmental pollution problem by toasting and burning organically combines, and is again sharp Liberated heat heating tape steel when burning with volatile ingredient is fully recycled the flue gas heat after burning, well The problems referred to above have been solved. This device has following characteristics:
1 adopts heat exchanger with the heat heats cold air of hot flue gas, directly heats by this clean hot-air and dries by the fire Roasting band steel satisfies the condition of producing high-quality clad plate.
The 2 harmful volatile ingredient gases that produce when oven dry paint are sent into to burn in the heater and are burned the heat after the burning Flue gas enters heat exchanger and is used for the heats cold air.
3 by control volatile ingredient gas purging amount and the amount that the new hot blast of configuration enters baking box, guarantees volatilization gas The ratio of composition in baking box, thus the control fuel gas is not blasted in baking box.

Claims (2)

1, the baking method of band steel coating, it is characterized in that: the hot flue gas with incinerator heats clean air in gas/gas heat exchanger, with hot-air drying belt steel coating in oven; The solvent waste gas that contains that produces in oven during with baking band steel is sent into another gas/gas heat exchanger, sends into incinerator after the hot flue gas heating with incinerator and burns; The hot flue gas that incinerator is discharged is discharged into atmosphere through after above-mentioned two gas/gas heat exchanger heat exchange.
2, the apparatus for baking of band steel coating, it comprises oven and incinerator, it is characterized in that: also comprise air/flue gas heat exchange device and waste gas/flue gas heat exchange device, connect in the following manner by pipeline between them:
Air/flue gas heat exchange device has cleaned air inlet, clean hot air outlet, high-temperature flue gas entry, low-temperature flue gas outlet; Its high-temperature flue gas entry is communicated with the high-temperature flue gas outlet of incinerator, and its clean hot air outlet is communicated with the oven hot air inlet, and its cleaned air inlet and low-temperature flue gas outlet are communicated with atmosphere;
The exhaust gas entrance of incinerator is communicated with the waste gas outlet of waste gas/flue gas heat exchange device, and the high-temperature flue gas outlet is communicated with the high-temperature flue gas entry of air/flue gas heat exchange device and waste gas/flue gas heat exchange device;
Waste gas/the exhaust gas entrance of flue gas heat exchange device is communicated with the waste gas outlet of oven, and the low-temperature flue gas outlet is communicated with atmosphere.
CN 200510019090 2005-07-14 2005-07-14 Steel belt coating stoving method and apparatus Pending CN1739868A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200510019090 CN1739868A (en) 2005-07-14 2005-07-14 Steel belt coating stoving method and apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200510019090 CN1739868A (en) 2005-07-14 2005-07-14 Steel belt coating stoving method and apparatus

Publications (1)

Publication Number Publication Date
CN1739868A true CN1739868A (en) 2006-03-01

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101829649A (en) * 2010-05-26 2010-09-15 浙江华立涂装设备有限公司 Drying oven for spraying
CN103245185A (en) * 2013-05-27 2013-08-14 常州市骠马涂装系统工程有限公司 Parallel-serial type drying and heating system
CN104566402A (en) * 2013-10-23 2015-04-29 张家港市新港星科技有限公司 Technology for recovering and reutilizing organic volatile matters of rolled steel plate
CN106838941A (en) * 2017-03-15 2017-06-13 林景峰 Convenient energy-saving type burned waste gas device
CN106838940A (en) * 2017-03-15 2017-06-13 林景峰 Energy-saving burned waste gas device
CN107328174A (en) * 2017-07-19 2017-11-07 中山国安火炬科技发展有限公司 A kind of oven drying system of utilization organic exhaust gas combustion heating
CN108253437A (en) * 2018-03-29 2018-07-06 付长智 Production line is utilized from monitor-type baking vanish waste gas recovery
CN113915980A (en) * 2021-10-26 2022-01-11 泰安岱力能新能源科技发展有限公司 Pole piece drying system for lithium ion battery coating process and technological method thereof

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101829649A (en) * 2010-05-26 2010-09-15 浙江华立涂装设备有限公司 Drying oven for spraying
CN103245185A (en) * 2013-05-27 2013-08-14 常州市骠马涂装系统工程有限公司 Parallel-serial type drying and heating system
CN104566402A (en) * 2013-10-23 2015-04-29 张家港市新港星科技有限公司 Technology for recovering and reutilizing organic volatile matters of rolled steel plate
CN106838941A (en) * 2017-03-15 2017-06-13 林景峰 Convenient energy-saving type burned waste gas device
CN106838940A (en) * 2017-03-15 2017-06-13 林景峰 Energy-saving burned waste gas device
CN107328174A (en) * 2017-07-19 2017-11-07 中山国安火炬科技发展有限公司 A kind of oven drying system of utilization organic exhaust gas combustion heating
CN108253437A (en) * 2018-03-29 2018-07-06 付长智 Production line is utilized from monitor-type baking vanish waste gas recovery
CN113915980A (en) * 2021-10-26 2022-01-11 泰安岱力能新能源科技发展有限公司 Pole piece drying system for lithium ion battery coating process and technological method thereof

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