CN102679726B - Natural gas heating furnace and smoke exhaust system thereof - Google Patents

Natural gas heating furnace and smoke exhaust system thereof Download PDF

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Publication number
CN102679726B
CN102679726B CN201210163969.1A CN201210163969A CN102679726B CN 102679726 B CN102679726 B CN 102679726B CN 201210163969 A CN201210163969 A CN 201210163969A CN 102679726 B CN102679726 B CN 102679726B
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CN
China
Prior art keywords
flue
smoke evacuation
burner
burner hearth
furnace
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Application number
CN201210163969.1A
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Chinese (zh)
Other versions
CN102679726A (en
Inventor
韩涛
卫丽华
杨莉
刘君笑
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江苏丰东炉业股份有限公司
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Priority to CN201210163969.1A priority Critical patent/CN102679726B/en
Publication of CN102679726A publication Critical patent/CN102679726A/en
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Publication of CN102679726B publication Critical patent/CN102679726B/en

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/10Reduction of greenhouse gas [GHG] emissions
    • Y02P10/143Reduction of greenhouse gas [GHG] emissions of methane [CH4]

Abstract

The invention relates to a natural gas heating furnace and a smoke exhaust system thereof. The natural gas heating furnace comprises a furnace body, a furnace door and a combustor, a furnace liner and the combustor are disposed in the furnace body, a panel and the furnace door are arranged on a side surface of the furnace body, the combustor comprises a plurality of combustion nozzles, and the combustion nozzles are respectively arranged on the side surfaces and the top of a hearth; the hearth is communicated with the smoke exhaust system, the smoke exhaust system comprises a heat recycler, a compensator, a butterfly valve and a smoke exhaust adjustor which are sequentially connected, a hot air pipe is communicated with the heat recycler, a smoke pipe cover is arranged above the smoke exhaust adjustor and is communicated with a smoke exhaust pipe via a smoke pipe and a bend, the bend comprises an elbow and a flue conical pipe, and the hot air pipe is connected with a gas pipe via a fan. The combustion nozzles are arranged on the side surfaces and the top of the hearth, and the temperature in the furnace rises fast, and is more uniform. Owing to the separate smoke pipe cover and the conical pipe with the gradually reduced diameter, heat loss is reduced effectively, and the temperature and the pressure in the hearth are controlled accurately, and are balanced.

Description

Gas heating furnace and smoke evacuation system thereof
Technical field
The present invention relates to high-temperature heat treatment heating furnace, especially a kind of burner hearth side and be all provided with the gas heating furnace of burner above, and the smoke evacuation system of this gas heating furnace.
Background technology
Existingly for heat treated high-temperature heater, by mode of heating, distinguish and generally comprise resistance-heated furnace and gas heating furnace, by structure, distinguish and have box type heater and trolley heating furnace.The burner hearth side of gas heating furnace is provided with burner, and the inside of burner hearth is provided with exhanst gas outlet, and burner hearth is connected with smoke evacuation system by exhanst gas outlet.
At present, existing gas heating furnace, owing to being only provided with burner in burner hearth side, makes the zones of different in burner hearth occur larger temperature difference, is unfavorable for the heat treatment process of workpiece.On the other hand, because the temperature difference in burner hearth is large, have to adopt the mode of prolonging burning time to carry out balance, cause fuel consumption more, the defect such as burning time is long.
The smoke evacuation system of existing gas heating furnace generally comprises straight pipe type chimney, flue butterfly valve and the butterfly valve controller of at right angle setting on ground, and butterfly valve controller opens or closes according to the pressure control flue butterfly valve in burner hearth.At present, conventionally there is following defect in existing gas heating furnace: after 1, flue butterfly valve is opened, the straight pipe type chimney of smoke evacuation system there will be the stronger wind phenomenon of pulling out, cause the temperature and pressure in burner hearth to decline excessive, heat in stove is discharged in a large number by chimney, and the temperature and pressure in burner hearth is unbalanced; 2, the temperature and pressure in burner hearth is difficult for accurately controlling; 3, gas fuel consumes more; 4, heat treated part is second-rate.
Summary of the invention
The object of this invention is to provide temperature and pressure in a kind of burner hearth comparatively balanced, burner hearth side and be all provided with the gas heating furnace of burner above; And can accurately control the gas heating furnace smoke evacuation system of the temperature and pressure in burner hearth.
The object of the invention is by realizing by the following technical solutions:
Gas heating furnace and smoke evacuation system thereof, comprise body of heater, fire door and burner, body of heater consists of the furnace shell of its side and the bell of end face, body of heater inner surface is provided with high temperature resistant furnace lining, body of heater inner chamber forms burner hearth, body of heater is provided with burner, one side of described body of heater is provided with fire door, fire door and body of heater by articulating device form can folding be tightly connected, the contact-making surface of body of heater and fire door is provided with furnace panel, described burner comprises some burners and gas control valve, burner is separately positioned on the side of described burner hearth of the furnace body and above, described burner is connected with gas pipeline,
The burner hearth of described heating furnace is connected with smoke evacuation system by exhanst gas outlet, described smoke evacuation system comprises square chest, flue butterfly valve, heat regenerator, smoke evacuation adjuster, compensator, hot air duct, flue, flue gas shroud and smoke exhaust pipe, described burner hearth is communicated with square chest, heat regenerator, compensator, flue butterfly valve and smoke evacuation adjuster successively by exhanst gas outlet, described hot air duct is communicated with heat regenerator, the top of described smoke evacuation adjuster is provided with flue gas shroud, flue gas shroud and smoke evacuation adjuster between from a distance; Described flue gas shroud is communicated with smoke exhaust pipe by flue, bend pipe, and smoke exhaust pipe is fixedly installed on base by support.
As the preferred technical solution of the present invention, described bend pipe comprises elbow one, flue conical pipe and elbow two, and described flue is connected with the larger diameter end of flue conical pipe through elbow one, and the smaller diameter end of flue conical pipe is connected with described smoke exhaust pipe through elbow two.
As the preferred technical solution of the present invention, described flue gas shroud is made as taper shape, and the diameter of flue gas shroud lower end is greater than the diameter of described smoke evacuation adjuster; Angle between axis and the horizontal line of described flue conical pipe is less than 45 degree.
As the preferred technical solution of the present invention, described compensator is connected with base by fixed mount and fixes.
As the preferred technical solution of the present invention, described hot air duct is connected with described gas pipeline through combustion fan.
As the preferred technical solution of the present invention, described fire door is flexibly connected with the open-close type that body of heater forms vertical direction by elevating mechanism.
As the preferred technical solution of the present invention, described heating furnace is also provided with the chassis that can pass in and out burner hearth, is provided with material pier above chassis, is provided with roller and track below chassis, described chassis is connected with chassis driving mechanism, and chassis driving mechanism can drive chassis turnover burner hearth.
As the preferred technical solution of the present invention, between described chassis side and burner hearth sidewall, be provided with mechanical sealing mechanism, mechanical sealing mechanism comprises hydraulic means, lever and is provided with the slotting tool of refractory seals filler, hydraulic means by lever actuated slotting tool and described chassis side realize can separation movable sealing be connected.
As the preferred technical solution of the present invention, in the burner hearth of described body of heater, be provided with the thermocouple and the pressure sensor that are connected with control device, described control device is connected with butterfly valve controller, and butterfly valve controller can drive the folding of flue butterfly valve.
As the preferred technical solution of the present invention, the relative position of described burner hearth of the furnace body two sides is respectively equipped with multiple combustion of natural gas mouths, and the centre position above burner hearth is provided with multiple combustion of natural gas mouths; The burner of described burner hearth two sides is updraft impulse burners, and the burner above described burner hearth is flat flame burner.
The invention has the beneficial effects as follows: with respect to prior art, burner hearth of the present invention side and be all provided with combustion of natural gas mouth above, thus it is very fast to make to heat up in stove, and the temperature in burner hearth more evenly, more easy to control.
The conical pipe that smoke evacuation system of the present invention adopts separated smoke shroud, elbow and diameter to reduce gradually, what effectively reduce chimney pulls out wind phenomenon, reduce scattering and disappearing of furnace heat, thereby can accurately control the temperature and pressure in burner hearth by the switch of controlling butterfly valve, make the temperature and pressure in burner hearth comparatively balanced.Gas fuel of the present invention consumes less, and the quality of heat treated part is better.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and specific embodiment, the invention will be further described:
Fig. 1 is main TV structure schematic diagram of the present invention;
Fig. 2 is the plan structure schematic diagram of Fig. 1;
Fig. 3 is the partial structurtes schematic diagram at fire door of the present invention position;
Fig. 4 is the broken section structural representation of body of heater of the present invention;
Fig. 5 is the structural representation of smoke evacuation system of the present invention;
Fig. 6 is the partial structurtes schematic diagram of smoke evacuation system of the present invention;
Fig. 7 is A-A sectional structure schematic diagram in Fig. 6.
In figure: 1, fire door, 2, elevating mechanism, 3, furnace shell, 4, burner, 5, furnace lining, 6, smoke evacuation system, 7, material pier, 8, bell, 9, blower fan, 10, thermocouple, 11, chassis, 12, sealing mechanism, 13, panel, 14, chassis driving mechanism, 15, exhanst gas outlet, 21, square chest, 22, flue butterfly valve, 23, heat regenerator, 24, compensator fixed mount, 25, smoke evacuation adjuster, 26, compensator, 27, hot air duct, 28, flue, 281, flue gas shroud, 282, flue conical pipe, 283, elbow one, 284, elbow two, 29, smoke exhaust pipe, 30, smoke exhaust pipe support.
The specific embodiment
As shown in Figures 1 to 7, gas heating furnace and smoke evacuation system thereof, comprise body of heater, fire door 1 and burner, body of heater consists of the furnace shell 3 of its side and the bell 8 of end face, body of heater inner surface is provided with high temperature resistant furnace lining 5, and body of heater inner chamber forms burner hearth, and body of heater is provided with burner.One side of described body of heater is provided with fire door 1, fire door 1 and body of heater by articulating device form can folding be tightly connected, the contact-making surface of body of heater and fire door 1 is provided with furnace panel 13.Described in the present embodiment, burner comprises some combustion of natural gas mouths 4 and gas control valve, and burner 4 is separately positioned on the side of described burner hearth of the furnace body and above, and burner 4 is connected with gas pipeline by gas control valve.
In the present embodiment, the burner hearth of described heating furnace is connected with smoke evacuation system 6 by exhanst gas outlet 15, and described smoke evacuation system 6 comprises square chest 21, flue butterfly valve 22, heat regenerator 23, smoke evacuation adjuster 25, compensator 26, hot air duct 27, flue 28, flue gas shroud 281 and smoke exhaust pipe 29.Described burner hearth is communicated with square chest 21, heat regenerator 23, compensator 26, flue butterfly valve 22 and smoke evacuation adjuster 25 successively by exhanst gas outlet 15, described hot air duct 27 is communicated with heat regenerator 23, the top of described smoke evacuation adjuster 25 is provided with flue gas shroud 281, flue gas shroud 281 and smoke evacuation adjuster 25 between from a distance.Flue gas shroud 281 is communicated with smoke exhaust pipe 29 by flue 28, bend pipe, and smoke exhaust pipe 29 is fixedly installed on base by support 30.
Described in the present embodiment, bend pipe comprises elbow 1, flue conical pipe 282 and elbow 2 284, described flue 28 is connected with the larger diameter end of flue conical pipe 282 through elbow 1, and the smaller diameter end of flue conical pipe 282 is connected with described smoke exhaust pipe 29 through elbow 2 284.Described flue gas shroud 281 is made as taper shape, the diameter of flue gas shroud 281 lower ends is greater than the diameter of described smoke evacuation adjuster 25, angle between axis and the horizontal line of described flue conical pipe 282 is less than 45 degree, and the angle that the present invention gets between axis and the horizontal line of flue conical pipe 282 is less than 15 degree as preferred embodiment.
Compensator 26 of the present invention is connected with base and is fixed by fixed mount 24.Described hot air duct 27 is connected with described burner through combustion fan 9, to make full use of waste heat, saves the energy, reduces the consumption of natural gas.The present embodiment fire door 1 is flexibly connected with the open-close type that body of heater forms vertical direction by elevating mechanism 2.Heating furnace is also provided with the chassis 11 that can pass in and out burner hearth, and chassis 11 is provided with material pier 7 above, and chassis 11 is provided with roller and track below, and chassis 11 is connected with chassis driving mechanism 14, and chassis driving mechanism 14 can drive chassis 11 to pass in and out burner hearth.
Between described chassis 11 sides and burner hearth sidewall, be provided with mechanical sealing mechanism 12, mechanical sealing mechanism 12 comprises hydraulic means, lever and is provided with the slotting tool of refractory seals filler, hydraulic means by lever actuated slotting tool and described chassis 11 sides realize can separation movable sealing be connected.In the burner hearth of described body of heater, be provided with the thermocouple 10 and the pressure sensor that are connected with control device, described control device is connected with butterfly valve controller, and butterfly valve controller can drive 22 foldings of flue butterfly valve.The relative position of burner hearth of the furnace body of the present invention two sides is respectively equipped with multiple combustion of natural gas mouths 4, and the centre position above burner hearth is provided with multiple combustion of natural gas mouths 4; The burner 4 of described burner hearth two sides is updraft impulse burners, and the burner 4 above burner hearth is flat flame burners.The layout of burner is more reasonable in burner hearth of the present invention, thereby it is very fast to make to heat up in stove, and the temperature in burner hearth more evenly, more easy to control.

Claims (8)

1. a gas heating furnace and smoke evacuation system thereof, comprise body of heater, fire door and burner, body of heater consists of the furnace shell of its side and the bell of end face, body of heater inner surface is provided with high temperature resistant furnace lining, body of heater inner chamber forms burner hearth, body of heater is provided with burner, one side of described body of heater is provided with fire door, fire door and body of heater by articulating device form can folding be tightly connected, the contact-making surface of body of heater and fire door is provided with furnace panel, it is characterized in that: described burner comprises some burners and gas control valve, burner is separately positioned on the side of described burner hearth of the furnace body and above, described burner is connected with gas pipeline, the burner hearth of described heating furnace is connected with smoke evacuation system by exhanst gas outlet, described smoke evacuation system comprises square chest, flue butterfly valve, heat regenerator, smoke evacuation adjuster, compensator, hot air duct, flue, flue gas shroud and smoke exhaust pipe, described burner hearth is communicated with square chest, heat regenerator, compensator, flue butterfly valve and smoke evacuation adjuster successively by exhanst gas outlet, described hot air duct is communicated with heat regenerator, the top of described smoke evacuation adjuster is provided with flue gas shroud, flue gas shroud and smoke evacuation adjuster between from a distance, described flue gas shroud is communicated with smoke exhaust pipe by flue, bend pipe, and smoke exhaust pipe is fixedly installed on base by support,
Described bend pipe comprises elbow one, flue conical pipe and elbow two, and described flue is connected with the larger diameter end of flue conical pipe through elbow one, and the smaller diameter end of flue conical pipe is connected with described smoke exhaust pipe through elbow two;
Described flue gas shroud is made as taper shape, and the diameter of flue gas shroud lower end is greater than the diameter of described smoke evacuation adjuster; Angle between axis and the horizontal line of described flue conical pipe is less than 45 degree.
2. gas heating furnace according to claim 1 and smoke evacuation system thereof, is characterized in that: described compensator is connected with base by fixed mount and fixes.
3. gas heating furnace according to claim 1 and smoke evacuation system thereof, is characterized in that: described hot air duct is connected with described gas pipeline through combustion fan.
4. gas heating furnace according to claim 1 and smoke evacuation system thereof, is characterized in that: described fire door is flexibly connected with the open-close type that body of heater forms vertical direction by elevating mechanism.
5. according to the gas heating furnace described in claim 1 or 4 and smoke evacuation system thereof, it is characterized in that: described heating furnace is also provided with the chassis that can pass in and out burner hearth, above chassis, be provided with material pier, below chassis, be provided with roller and track, described chassis is connected with chassis driving mechanism, and chassis driving mechanism can drive chassis turnover burner hearth.
6. gas heating furnace according to claim 5 and smoke evacuation system thereof, it is characterized in that: between described chassis side and burner hearth sidewall, be provided with mechanical sealing mechanism, mechanical sealing mechanism comprises hydraulic means, lever and is provided with the slotting tool of refractory seals filler, hydraulic means by lever actuated slotting tool and described chassis side realize can separation movable sealing be connected.
7. gas heating furnace according to claim 1 and smoke evacuation system thereof, it is characterized in that: in the burner hearth of described body of heater, be provided with the thermocouple and the pressure sensor that are connected with control device, described control device is connected with butterfly valve controller, and butterfly valve controller can drive the folding of flue butterfly valve.
8. gas heating furnace according to claim 1 and smoke evacuation system thereof, is characterized in that: the relative position of described burner hearth of the furnace body two sides is respectively equipped with multiple combustion of natural gas mouths, and the centre position above burner hearth is provided with multiple combustion of natural gas mouths; The burner of described burner hearth two sides is updraft impulse burners, and the burner above described burner hearth is flat flame burner.
CN201210163969.1A 2012-05-24 2012-05-24 Natural gas heating furnace and smoke exhaust system thereof CN102679726B (en)

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Application Number Priority Date Filing Date Title
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CN102679726B true CN102679726B (en) 2014-05-07

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CN103712467A (en) * 2012-09-29 2014-04-09 丹阳市江南工业炉有限公司 Distributed control system for car-bottom type heat treatment furnace groups
CN103836972B (en) * 2012-11-26 2016-07-13 江苏华东炉业有限公司 Industrial furnace chassis
DE102013004934A1 (en) * 2013-03-22 2014-09-25 Gkn Sinter Metals Holding Gmbh Rohrbündelrekuperator on a sintering furnace and heat transfer method with a sintering furnace and with a Rohrbündelrekuperator
CN104513882A (en) * 2013-09-30 2015-04-15 江苏高皓工业炉有限公司 Car-type gas furnace
CN104154765B (en) * 2014-08-28 2017-01-11 安徽省六安市佳瑞粉末冶金有限公司 Natural gas tunnel kiln exhaust smoke waste heat recycling pipeline thermoelectricity and hot water supply system and running method thereof
CN106288789A (en) * 2015-06-05 2017-01-04 江苏腾天工业炉有限公司 Low energy consumption gas heating furnace
CN106288774A (en) * 2015-06-05 2017-01-04 江苏腾天工业炉有限公司 Efficient natural gas trolley heating furnace
CN105043095A (en) * 2015-06-25 2015-11-11 石家庄新华能源环保科技股份有限公司 Double-heating rotary hearth ring furnace
CN105241237B (en) * 2015-09-30 2018-07-06 山东新达重工机械有限公司 Natural gas heat-treatment furnace
CN105466212B (en) * 2016-01-29 2018-02-23 云南天高镍业有限公司 A kind of vertical heat exchange type alloy baking furnace system

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CN2155001Y (en) * 1993-05-17 1994-02-02 北京达能技术开发公司 Periodic top-burning ceramic kiln
CN2202898Y (en) * 1994-12-01 1995-07-05 首钢总公司 Sealing device for side gap of table car
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JP2008240133A (en) * 2007-03-29 2008-10-09 Nippon Steel Engineering Co Ltd Method for switching combustion and exhaust of heat storage type combustion burner of continuous heating furnace
CN201867043U (en) * 2010-11-12 2011-06-15 中材高新材料股份有限公司 Tunnel kiln for roasting quartz crucibles

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Address after: Zhang Dian Zhen Jiangyan District 225536 in Jiangsu province Taizhou City Cai Guan Industrial Zone

Patentee after: Jiangsu Feng Dong environmental protection Polytron Technologies Inc

Address before: Jiangyan City, Jiangsu province 225500 Zhang Dian Zhen Cai Guan Industrial Zone of Taizhou City

Patentee before: Jiangsu Fengdong Furnace Industry Co., Ltd.

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