CN201684712U - Spraying drying furnace - Google Patents

Spraying drying furnace Download PDF

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Publication number
CN201684712U
CN201684712U CN2010202039732U CN201020203973U CN201684712U CN 201684712 U CN201684712 U CN 201684712U CN 2010202039732 U CN2010202039732 U CN 2010202039732U CN 201020203973 U CN201020203973 U CN 201020203973U CN 201684712 U CN201684712 U CN 201684712U
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CN
China
Prior art keywords
exhaust
return air
drying tunnel
communicated
spraying
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Expired - Lifetime
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CN2010202039732U
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Chinese (zh)
Inventor
吕建立
吴海珍
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ZHEJIANG HUALI INTELLIGENT EQUIPMENT CO., LTD.
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ZHEJIANG HUALI COATING EQUIPMENT CO Ltd
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Priority to CN2010202039732U priority Critical patent/CN201684712U/en
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Publication of CN201684712U publication Critical patent/CN201684712U/en
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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Abstract

A spraying drying furnace comprises a drying tunnel and an exhaust-air combustion furnace, wherein the drying tunnel is communicated with the exhaust-air combustion furnace through an exhaust-air duct and a return air duct; a return air outlet, an exhaust-air inlet and a return air inlet are formed on the wall of the drying tunnel, the exhaust-air inlet is communicated with the exhaust-air duct, and both the return air inlet and the return air outlet are communicated with the return air duct; the exhaust-air combustion furnace comprises a heat exchanger communicated with the return air duct, and a pre-heater communicated and a combustion chamber which are communicated with the exhaust-air duct, wherein the inlet of the combustion chamber is communicated with the outlet of the pre-heater, and the outlet of the combustion chamber is communicated with the inlet of the heat exchanger. The utility model greatly saves equipment investment; the heat energy recovery ratio is high, the technologies of exhaust air heat energy recovery and heat exchange are introduced on the basis of an air heating furnace on an original drying tunnel, heat energy of exhaust air generated after combustion can be fully used, the heat energy recovery rate is quiet high, energy sources required by the drying furnace and the combustion furnace are greatly saved, and the running cost is reduced; the waste processing efficiency is high, the incineration temperature is high, exhaust air decomposition is complete, and the purifying rate is very high.

Description

A kind of drying oven for spraying
Technical field
The utility model relates to a kind of spraying drying unit, relates in particular to the drying oven for spraying of a kind of integrated exhaust gas burning and heat-energy recovering apparatus.
Background technology
Surface of the work is handled and is adopted spraying technology mostly, as spray paint and plastic-blasting, most spray liniment all needs to be cured by heating after spraying, and spray liniment all can give out waste gas in heating process, these waste gas comprise the organic compound of gaseous state, as benzene, dimethylbenzene etc., has stronger toxicity, as not handling, be discharged in the air and not only can produce extremely bad influence staff's health, also can atmosphere pollution, therefore setting up spray-painting production line must install emission-control equipment additional.Emission-control equipment in the market adheres to different industries separately with the spraying drying unit, by different manufacturer production, this has just caused the input of equipment when going into operation excessive, and the equipment of different manufacturers production when mounted difficulty cooperate, easily cause wherein equipment capacity superfluous and waste.Emission-control equipment is handled the mode that the more employing of organic waste gas is burned, and can produce a large amount of heats in the burning process, is installed separately as drying oven and waste gas combustion furnace, and a large amount of heats that then produce in the waste gas treatment process can be wasted.
The utility model content
The utility model solves prior art problems, discloses the drying oven for spraying of a kind of integrated exhaust gas burning and heat-energy recovering apparatus.
The technical solution of the utility model: a kind of drying oven for spraying, comprise drying tunnel, it is characterized in that: it also comprises waste gas combustion furnace; Described drying tunnel is connected with waste gas combustion furnace by exhaust piping and return air duct; The drying tunnel wall is provided with return air outlet, exhaust gas entrance and return air inlet, and exhaust gas entrance is connected with exhaust piping, and return air inlet and return air outlet are connected with return air duct respectively; Described waste gas combustion furnace comprises the heat exchanger that is connected with return air duct, the preheater that is connected with exhaust piping and Burning Room, and the inlet of Burning Room is connected with the outlet of preheater, and the outlet of Burning Room is connected with the inlet of heat exchanger.
The curing that common spray liniment needs need be heated, workpiece heats in drying tunnel, the spray liniment of surface of the work produces organic waste gas, these gases are detached drying tunnel from exhaust gas entrance, enter waste gas combustion furnace by exhaust piping, enter Burning Room after the preheating of waste gas process preheater and burn, produce a large amount of heats simultaneously, the processing of high temperature gas is later discharged through over-heat-exchanger behind all burnt; Simultaneously, the gas that temperature is lower in the drying tunnel is entered by the return air inlet, enters heat exchanger by return air duct, after the heating of the gas after the processing of high temperature, again via return air duct, gets back to drying tunnel from the return air outlet, the gas in the heating drying tunnel.
As preferably, described drying tunnel outer wall also is provided with wind-supplying mouth.After waste gas in the drying tunnel was drawn out of processing, gas reduced in the drying tunnel, produced negative pressure, carried out replenish air by wind-supplying mouth, kept the drying tunnel inside and outside air pressure balance.
As preferably, described drying tunnel inside is provided with hygrosensor.Hygrosensor is used to grasp the curing baking temperature of workpiece in the drying tunnel.
As preferably, described waste gas combustion furnace is communicated with heat exchange blast pipe and straight-through blast pipe, and described straight-through blast pipe is communicated with the inlet of heat exchanger, and described heat exchange blast pipe is communicated with the outlet of heat exchanger; Described heat exchange blast pipe and straight-through blast pipe are provided with switch valve, and described switch valve is controlled by described hygrosensor.
By the reading of hygrosensor, temperature is lower in drying tunnel, opens the switch valve on the heat exchange blast pipe, close the switch valve on the straight-through blast pipe, high-temperature gas passes heat exchanger after the burning will be sent drying tunnel back to after will heating from the gas that return air duct injects, and the gas in the drying tunnel is heated; Temperature in drying tunnel reaches the requirement of solidification temperature, when not needing again the gas in the drying tunnel to be heated, close the switch valve on the heat exchange blast pipe, open the switch valve on the straight-through blast pipe, high-temperature gas after the burning is directly discharged from straight-through blast pipe, without heat exchanger, do not heat the gas that injects from return air duct.
As preferably, the outlet of described switch valve is connected with total air escape pipe, and described total air escape pipe is connected with hot water storgae.Even the gas after the burning through over-heat-exchanger, after the heating of the gas in the drying tunnel, still has higher temperature, through total air escape pipe the water in the hot water storgae is heated, produce hot water, further reclaim heat energy.
As preferably, described exhaust gas entrance has three, is arranged at the two ends and the middle part on drying tunnel top respectively.The exhaust gas entrance of being located at everywhere fully extracts the interior waste gas of drying tunnel, and exhaust-gas treatment is more thorough.
As preferably, described drying tunnel inside is provided with the workpiece track.
As preferably, described return air outlet has several, is uniformly distributed in the below of described workpiece track.
All workpiece that need solidify are hung on the workpiece track, inject drying tunnel through the gas after the heating from the return air outlet, evenly blow to all surface of the works, make stable, the intensification equably of workpiece, because being arranged at, the principle that hot-air rises, return air outlet can make the workpiece heating rapider, even under the workpiece.
As preferably, described two switch valves link mutually.Two switch valves link mutually, make two switch valves open the specified capacity that sum is a blast pipe, when temperature stabilization in the drying tunnel rises, reduce the switch valve of heat exchange blast pipe, increase the switch valve of straight-through blast pipe, reduce to enter the amount of high-temperature gas in the heat exchanger, slow down heating the return air duct injecting gas; Otherwise, then strengthen heating to the return air duct injecting gas.
In sum, the utlity model has following advantage:
1, saves equipment investment in a large number;
2, heat energy recovery rate height, introduce heat energy from waste gas recovery, heat-exchanging process on the hot-blast stove basis of original drying tunnel, make full use of the heat energy of the waste gas generation of burning, heat energy recovery rate is quite high, greatly save the energy that drying oven and incinerator need, reduced operating cost;
3, exhaust-gas treatment efficient height, the incineration temperature height, waste gas decomposes fully, and purifying rate is high.
Description of drawings
Fig. 1 is the utility model schematic diagram.
Among the figure, 1, drying tunnel, 2, exhaust gas entrance, 3, the workpiece track, 4, waste gas combustion furnace, 5, Burning Room, 6, heat exchanger, 7, preheater, 8, return air duct, 9, exhaust piping, 10, the return air inlet, 11, return air outlet, 12, straight-through blast pipe, 13, the heat exchange blast pipe, 14, switch valve, 15, hot water storgae, 16, workpiece, 17, hygrosensor, 18, wind-supplying mouth, 19, total air escape pipe.
The specific embodiment
The utility model is described in further detail with embodiment below in conjunction with accompanying drawing.
A kind of drying oven for spraying comprises drying tunnel 1 and waste gas combustion furnace 4; Described drying tunnel 1 is connected with waste gas combustion furnace 4 by exhaust piping 9 and return air duct 8; Drying tunnel 1 wall is provided with 11, three exhaust gas entrances 2 of several return air outlets, return air inlet 10 and wind-supplying mouth 18, and drying tunnel 1 inside is provided with hygrosensor 17, and described exhaust gas entrance 2 is arranged at the two ends and the middle part on drying tunnel 1 top respectively; Exhaust gas entrance 2 is connected with exhaust piping 9 by air exhauster, and return air inlet 10 and return air outlet 11 are connected with return air duct 8 respectively; Described waste gas combustion furnace 4 comprises the heat exchanger 6 that is connected with return air duct 8, the preheater 7 that is connected with exhaust piping 9 and Burning Room 5, the inlet of Burning Room 5 is connected with the outlet of preheater 7, the outlet of Burning Room 5 is connected with the inlet of heat exchanger 6, waste gas combustion furnace 4 is communicated with heat exchange blast pipe 13 and straight-through blast pipe 12, described straight-through blast pipe 12 is communicated with the inlet of heat exchanger 6, and described heat exchange blast pipe 13 is communicated with the outlet of heat exchanger 6; Described heat exchange blast pipe 13 and straight-through blast pipe 12 are provided with the 14 mutual interlocks of 14, two switch valves of switch valve and are controlled by described hygrosensor 17; The outlet of described switch valve 14 is connected with total air escape pipe 19, and described total air escape pipe 19 is connected with hot water storgae 15.Described drying tunnel 1 inside is provided with workpiece track 3, and return air outlet 11 is uniformly distributed in the below of described workpiece track 3.
Workpiece 16 after the spraying is positioned on the workpiece track 3, and the spray liniment solidification temperature on workpiece 16 surfaces needs 150～200 degrees centigrade approximately.During curing, at first begin drying tunnel 1 heating, when workpiece 16 is heated, the sprayed coating on workpiece 16 surfaces begins to discharge waste gas, waste gas is gathered by the exhaust gas entrance 2 on drying tunnel 1 top, send into the preheater 7 of waste gas combustion furnace through exhaust piping 9, carry out burning disposal through entering Burning Room 5 after the preheating, incineration temperature can reach 750 degrees centigrade, gas after the burning disposal is discharged from the outlet of Burning Room 5, enters heat exchanger 6 and carries out heat exchange, and the cooling back enters the tracheae of hot water storgae 15 inside by switch valve and total air escape pipe 19, after amount of residual heat will in the gas was absorbed by the water in the hot water storgae 15, gas was arranged to atmosphere; Simultaneously, temperature is lower in the drying tunnel 1, also do not reach 200 degrees centigrade of the temperature upper limits that workpiece 16 surface cures need, the air that temperature is lower enters from return air inlet 10, through return air duct 8, enters the heat exchanger 6 of incinerator 4, the high-temperature gas of handling with incinerator 4 carries out heat exchange, be heated, send drying tunnel 1 back to by return air duct 8 then, the workpiece 16 in the drying tunnel 1 is heated; During 200 degrees centigrade of temperature upper limits that arrive to need when temperature in the drying tunnel 1, do not need again drying tunnel 1 inside to be heated, hygrosensor 17 gauge tap valves, close heat exchange blast pipe 13, open straight-through blast pipe 12, the high-temperature gas that incinerator 4 was handled directly enters the tracheae of hot water storgae 15 inside via straight-through blast pipe 12 and total air escape pipe 19, without heat exchanger 6.
Add 5000m with drying oven 3The waste gas combustion furnace of/h is an example, independently the waste gas combustion furnace of relevant specification need be invested more than 800,000 yuan approximately, and installation electric power 95KW uses heavily about 3.1 tons of metal, and integrated burned waste gas and heat-energy recovering apparatus only need to invest about about 300,000 yuan, use about 0.8 ton of metal.Through actual measurement, behind integrated exhaust gas incinerator and the heat-energy recovering apparatus, through the secondary energy recovery, the rate of recovery of heat energy can reach more than 90%, and the incineration temperature of waste gas is up to 600～900 degrees centigrade in the waste gas combustion furnace, and purification efficiency is high, can reach more than 95%.
Embodiment two
Be that with the difference of embodiment one incineration temperature can reach 850 degrees centigrade.

Claims (9)

1. a drying oven for spraying comprises drying tunnel (1), it is characterized in that: it also comprises waste gas combustion furnace (4); Described drying tunnel (1) is connected with waste gas combustion furnace (4) by exhaust piping (9) and return air duct (8); Drying tunnel (1) wall is provided with return air outlet (11), exhaust gas entrance (2) and return air inlet (10), and exhaust gas entrance (2) is connected with exhaust piping (9), and return air inlet (10) and return air outlet (11) are connected with return air duct (8) respectively; Described waste gas combustion furnace (4) comprises the heat exchanger (6) that is connected with return air duct (8), the preheater (7) that is connected with exhaust piping (9) and Burning Room (5), the inlet of Burning Room (5) is connected with the outlet of preheater (7), and the outlet of Burning Room (5) is connected with the inlet of heat exchanger (6).
2. according to the described drying oven for spraying of claim 1, it is characterized in that: also be provided with wind-supplying mouth (18) on described drying tunnel (1) wall.
3. according to the described drying oven for spraying of claim 1, it is characterized in that: described drying tunnel (1) inside is provided with hygrosensor (17).
4. according to the described drying oven for spraying of claim 3, it is characterized in that: described waste gas combustion furnace (4) is communicated with heat exchange blast pipe (13) and straight-through blast pipe (12), described straight-through blast pipe (12) is communicated with the inlet of heat exchanger (6), and described heat exchange blast pipe (13) is communicated with the outlet of heat exchanger (6); Described heat exchange blast pipe (13) and straight-through blast pipe (12) are provided with switch valve (14), and described switch valve (14) is controlled by described hygrosensor (17).
5. according to the described drying oven for spraying of claim 4, it is characterized in that: the outlet of described switch valve (14) is connected with total air escape pipe (19), and described total air escape pipe (19) is connected with hot water storgae (15).
6. according to claim 1 or 5 described drying oven for spraying, it is characterized in that: described exhaust gas entrance (2) has three, is arranged at the two ends and the middle part on drying tunnel (1) top respectively.
7. according to the described drying oven for spraying of claim 1, it is characterized in that: described drying tunnel (1) inside is provided with workpiece track (3).
8. according to the described drying oven for spraying of claim 7, it is characterized in that: described return air outlet (11) has several, is uniformly distributed in the below of described workpiece track (3).
9. according to the described drying oven for spraying of claim 4, it is characterized in that: described two switch valves (14) are interlock mutually.
CN2010202039732U 2010-05-26 2010-05-26 Spraying drying furnace Expired - Lifetime CN201684712U (en)

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Application Number Priority Date Filing Date Title
CN2010202039732U CN201684712U (en) 2010-05-26 2010-05-26 Spraying drying furnace

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Application Number Priority Date Filing Date Title
CN2010202039732U CN201684712U (en) 2010-05-26 2010-05-26 Spraying drying furnace

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Cited By (5)

* 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
CN102927803A (en) * 2012-11-12 2013-02-13 江苏福通木业有限公司 Wood chip drying device
CN104110688A (en) * 2014-07-08 2014-10-22 安徽福斯特汽车部件有限公司 Water heating furnace utilizing waste gas incineration
CN105750175A (en) * 2016-04-07 2016-07-13 魏中富 Drying system for water-based coating
CN108253437A (en) * 2018-03-29 2018-07-06 付长智 Production line is utilized from monitor-type baking vanish waste gas recovery

Cited By (7)

* 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
CN102927803A (en) * 2012-11-12 2013-02-13 江苏福通木业有限公司 Wood chip drying device
CN102927803B (en) * 2012-11-12 2015-02-04 江苏福通木业有限公司 Wood chip drying device
CN104110688A (en) * 2014-07-08 2014-10-22 安徽福斯特汽车部件有限公司 Water heating furnace utilizing waste gas incineration
CN104110688B (en) * 2014-07-08 2016-08-31 安徽福斯特汽车部件有限公司 Burned waste gas water heater
CN105750175A (en) * 2016-04-07 2016-07-13 魏中富 Drying system for water-based coating
CN108253437A (en) * 2018-03-29 2018-07-06 付长智 Production line is utilized from monitor-type baking vanish waste gas recovery

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C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee
CP03 Change of name, title or address

Address after: 313000 Zhejiang Province, Huzhou City Economic Development Zone Deqing Unshu Road No. 596

Patentee after: ZHEJIANG HUALI INTELLIGENT EQUIPMENT CO., LTD.

Address before: 313200 Zhejiang city in Huzhou Province Economic Development Zone Deqing County Unshu Road No. 596

Patentee before: Zhejiang Huali Coating Equipment Co., Ltd.

CX01 Expiry of patent term

Granted publication date: 20101229

CX01 Expiry of patent term