CN109136499A - For heat-treatment furnace flue gas loopback guard method and its device - Google Patents
For heat-treatment furnace flue gas loopback guard method and its device Download PDFInfo
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- CN109136499A CN109136499A CN201811149992.9A CN201811149992A CN109136499A CN 109136499 A CN109136499 A CN 109136499A CN 201811149992 A CN201811149992 A CN 201811149992A CN 109136499 A CN109136499 A CN 109136499A
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- treatment furnace
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/773—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material under reduced pressure or vacuum
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0006—Details, accessories not peculiar to any of the following furnaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
-
- 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
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Treating Waste Gases (AREA)
- Drying Of Gases (AREA)
Abstract
The present invention provides be used for heat-treatment furnace flue gas loopback guard method and its device; belong to metallurgical technology field; including being discharged into the liner of waste heat heat riser from kiln gas, pass through reaching in open fire oxygen removal by combustion device from kiln gas outlet through connecting pipe on liner from kiln gas；It will be from the O in kiln gas by open fire oxygen removal by combustion device2It removes；O will be removed2Being discharged into de-watering apparatus from kiln gas afterwards removes part H in flue gas2O；It is protective gas by the flue gas handled above, this protective gas is sent into the collet of waste heat heat riser, the protective gas after heating reaches in heat-treatment furnace.Provided by the present invention for heat-treatment furnace flue gas loopback guard method and its device; by that will be handled to obtain protective gas from kiln gas; using itself generate from kiln gas as protective gas; risk is small; it does not need producer and separately individually buys hydrogen source, source nitrogen or other protective gas preparation facilities, save most spending.
Description
Technical field
The invention belongs to metallurgical technology fields, more specifically, are related to for the loopback guard method of heat-treatment furnace flue gas
And its device.
Background technique
Heat-treatment furnace needs to be added independent protective gas reduction heat treated part and is oxidized, and is heat-treated work in order to prevent
Part is oxidized during high-temperature heating, it is necessary to is filled with protective gas in heat-treatment furnace and be carried out non-oxidation protection, protect gas
Body is generally hydrogen or nitrogen or homemade DX gas, and the purpose using the above gas is the steady of control heat treatment furnace atmosphere
It is fixed.
Three of the above protective gas requires that gas source is separately provided, and invests larger；In addition, H2It is inflammable with homemade DX gas
Explosive, system complex, control are complicated；N2It needs to need additionally to increase thermal energy consumption before entering heat-treatment furnace.
Summary of the invention
The purpose of the present invention is to provide be used for heat-treatment furnace flue gas loopback guard method and its device,To solve existing skill Protective gas needs the technical issues of gas source is separately provided in art.
For above-mentioned purpose, the technical solution adopted by the present invention is, provides for heat-treatment furnace flue gas loopback guard method,
The following steps are included:
1) N will be contained2、NOx、CO2、O2And H2O composition is discharged into the liner of waste heat heat riser from kiln gas, from furnace
Flue gas passes through reaching in open fire oxygen removal by combustion device from kiln gas outlet through connecting pipe on liner；
It 2) will be from the O in kiln gas by open fire oxygen removal by combustion device2It removes；Open fire oxygen removal by combustion device is by natural gas
Burner adjustment works under micro- reduction combustion state, and CO is contained in combustion product, using in combustion product CO capture flue gas
O2, system be arranged O2 Concentration Testing, realize natural gas combustion device volume of air supply continuously adjust；
3) O will be removed2Being discharged into de-watering apparatus from kiln gas afterwards removes part H in flue gas2O；
4) O will be removed2With part H2O's passes through dehumidification drying device from kiln gas for remaining H again2O is removed；
5) N will finally be contained2、NOXAnd CO2Protective gas be discharged into the collet of waste heat heat riser, by liner
Protective gas is heated from kiln gas, the protective gas after heating is exported by protective gas on collet through connecting tube
Road reaches in heat-treatment furnace.
It is provided by the present invention for the beneficial effect of heat-treatment furnace flue gas loopback guard method: with prior art phase
Than, obtain protective gas by that will be handled from kiln gas, using itself generate from kiln gas be used as protective gas, danger
Property it is small, do not need producer separately individually buy hydrogen source, source nitrogen or self-control gas preparation facilities, save most spending,
The protective gas obtained after processing is heated using the waste heat from kiln gas, and exhaust gas recycles, and improves waste heat flue gas utilization rate,
It is energy saving, operate with safe and reliable, the additional energy is less.
The present invention also provides the devices for heat-treatment furnace flue gas loopback guard method, including open fire oxygen removal by combustion to fill
It sets, de-watering apparatus, dehumidification drying device and waste heat heat riser.
Further, the waste heat heat riser includes liner and collet, and the collet is set on the inner bladder outer wall,
The liner at the bottom be equipped with from kiln gas import, top be equipped with from kiln gas export, the collet bottom be equipped with protective gas into
Mouth, top are exported equipped with protective gas.
Further, it is described from the exhanst gas outlet of kiln gas import and heat-treatment furnace connect, it is described from kiln gas outlet with
The open fire oxygen removal by combustion device import connection, the open fire oxygen removal by combustion device outlet and the import of the de-watering apparatus connect
It connects, the outlet of the de-watering apparatus is connect with the import of the dehumidification drying device, the leakage fluid dram and water storage of the de-watering apparatus
The outlet of slot connection, the dehumidification drying device is connected by pipeline with centrifugal blower import, and the centrifugal blower outlet passes through
Pipeline is connect with the protective gas import, and the protective gas outlet is connect with the gas inlet of heat-treatment furnace.
Further, burner is equipped in the open fire oxygen removal by combustion device, the burner is located at the open fire
Oxygen removal by combustion device top or side wall.
Further, the de-watering apparatus is water cooler, and the water cooler is for making from H in kiln gas2O is condensed into
Condensed water, the condensed water are expelled in the water storage tank from the leakage fluid dram.
Further, the waste heat heat riser is in barrel type heat exchanger, tubular heat exchanger and efflux heat-exchanger
It is a kind of.
Further, the desiccant for assisting dehydration is equipped in dehumidification drying device.
Further, Resistant heating device is equipped in the collet.
It is provided by the present invention for the beneficial effect of the device of heat-treatment furnace flue gas loopback guard method: with existing skill
Art is compared, and can require be selected by user using flexible combination especially to removal moisture drying workshop section according to different heat treatment technique
Select use；By waste heat heat riser the waste heat from kiln gas is preheated, to protective gas to guarantee to be transported to hot place
Protective gas in reason furnace reaches certain temperature, and the apparatus structure is simple, manufacturing cost is cheap.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the structural representation of the device provided in an embodiment of the present invention for the loopback guard method of heat-treatment furnace flue gas
Figure；
1, open fire oxygen removal by combustion device；2, de-watering apparatus；3, dehumidification drying device；4, waste heat heat riser；41, liner；
411, from kiln gas import；412, it is exported from kiln gas；42, collet；421, protective gas import；422, protective gas exports；
5, Resistant heating device；6, centrifugal blower；7, burner；8, leakage fluid dram；9, water storage tank；10, heat-treatment furnace；11, cooling
Water out；12, cooling water inlet.
Specific embodiment
In order to which technical problems, technical solutions and advantages to be solved are more clearly understood, tie below
Accompanying drawings and embodiments are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
To explain the present invention, it is not intended to limit the present invention.
Referring to Fig. 1, existing be illustrated to provided by the present invention for heat-treatment furnace flue gas loopback guard method.The use
In heat-treatment furnace flue gas loopback guard method, comprising the following steps:
1) N will be contained2、NOx、CO2、O2And H2The high temperature of O composition is discharged into the liner 41 of waste heat heat riser 4 from kiln gas
In, pass through reaching in open fire oxygen removal by combustion device 1 from kiln gas outlet 412 through connecting pipe on liner 41 from kiln gas；
It 2) will be from the O in kiln gas by open fire oxygen removal by combustion device 12It removes；Open fire oxygen removal by combustion device 1 is will be natural
The adjustment of gas burner works under micro- reduction combustion state, and CO is contained in combustion product, captures flue gas using combustion product CO
In O2, system be arranged O2 Concentration Testing, realize natural gas combustion device volume of air supply continuously adjust；
3) being discharged into de-watering apparatus 2 after removing oxygen from kiln gas is removed into part H in flue gas2O；
4) pass through dehumidification drying device 3 again from kiln gas for remaining H for remove oxygen and partial moisture2O is removed；
5) there is N for surplus2、NOxAnd CO2As protective gas be discharged into waste heat heat riser 4 through protective gas from kiln gas
Import 421 reaches in collet 42, is heated, is added to protective gas from kiln gas by initially entering the high temperature in liner 41
Protective gas after heat is reached in heat-treatment furnace 10 by the protective gas outlet 422 on collet 42 through connecting pipe.
It is provided by the present invention for the beneficial effect of heat-treatment furnace flue gas loopback guard method: with prior art phase
Than directly being handled the flue gas discharged after heat-treatment furnace combustion of natural gas to obtain protective gas, not needing individual hydrogen
Source, source nitrogen, do not need the preparation facilities for preparing DX gas yet, and the protective gas obtained after processing is directly to be fired using natural gas
The waste heat for discharging flue gas after burning is heated, and tail gas recycles, and improves waste heat flue gas utilization rate, energy saving, reduce cost,
Operate with safe and reliable, the additional energy is less.By taking Steel Pipe For Bearing spheroidizing annealing furnace as an example, such as without the nodularization of controlled atmosphere
Annealing furnace causes pipe surface oxidation serious when working, and surface scale is very thick, by techniques such as immersion, peeling, pickling
Processing.Sometimes pipe surface oxidation extremely cannot seriously be handled, and pipe is then directly scrapped.The present invention will convey continuous in roller-way
It is applied on heat-treatment furnace, H can be replaced2、N2The stove of heat treatment, operates with safe and reliable, and the additional energy is less.
Now the device provided by the present invention for heat-treatment furnace flue gas loopback guard method is illustrated.It is described to be used for heat
The device of kiln gas loopback guard method is handled, including waste heat heat riser 4, open fire oxygen removal by combustion device 1, de-watering apparatus 2, is removed
Wet drying device 3.
It is provided by the present invention for the beneficial effect of the device of heat-treatment furnace flue gas loopback guard method: with existing skill
Art is compared, and provided by the present invention for the device of heat-treatment furnace flue gas loopback guard method, can be wanted according to different heat treatment technique
It asks by the way of flexible combination, especially to removal moisture drying workshop section, can select to use by user, it is energy saving；By remaining
Hot heat riser preheats protective gas using waste gas residual heat, to guarantee that the protective gas being transported in heat-treatment furnace reaches
Certain temperature standard, the apparatus structure is simple, manufacturing cost is cheap.
Preferably, the waste heat heat riser 4 includes liner 41 and collet 42, and the collet 42 is set to the liner 41
On outer wall, 41 bottom of liner, which is equipped with, to be equipped with from kiln gas import 411, top from kiln gas outlet 412,42 bottom of collet
Portion is equipped with protective gas import 421, top is equipped with protective gas outlet 422.
It is described to be connect from kiln gas import 411 with the exhanst gas outlet of heat-treatment furnace 10, it is described from kiln gas outlet 412 and institute
State fiery 1 import of oxygen removal by combustion device connection clearly, the outlet of open fire oxygen removal by combustion device 1 and the import of the de-watering apparatus connect
It connects, the outlet of the de-watering apparatus is connect with the import of the dehumidification drying device 3, the leakage fluid dram and water storage of the de-watering apparatus
Slot 9 connects, and the outlet of the dehumidification drying device 3 is connected by pipeline with 6 import of centrifugal blower, and the centrifugal blower 6 exports
It is connect by pipeline with the protective gas import 421, the protective gas outlet 422 and the gas inlet of heat-treatment furnace 10 connect
It connects.
Preferably, burner 7 is equipped in the open fire oxygen removal by combustion device 1, the burner 7 is located at the open fire
1 top of oxygen removal by combustion device or side wall.Burner 7 belongs to the prior art, and details are not described herein, open fire oxygen removal by combustion device 1
It is to belong to combustion with meagre oxygen, using the oxygen in combustion with meagre oxygen capture flue gas, by the O in flue gas2It consumes.
Preferably, the de-watering apparatus 2 is water cooler, and the water cooler is for making from H in kiln gas2O is condensed into
Condensed water, the condensed water are expelled in the water storage tank 9 from the leakage fluid dram 8.De-watering apparatus 2 is for making flue gas cool-down extremely
100 DEG C of built-in cooling water water coolers below, the water vapour in flue gas are condensed into condensed water, condensed water by de-watering apparatus 2
It is discharged from leakage fluid dram 8.When work, cooling water enters from cooling water inlet 12, comes out after circulation from cooling water outlet 11；Water is cooling
The setting of device bottom angled, consequently facilitating condensation water collection will be concentrated, is expelled in water storage tank 9 from leakage fluid dram 8, and leakage fluid dram 8 is logical
Piping is connected to the inlet on water storage tank.
Preferably, the waste heat heat riser 4 is barrel type heat exchanger；Barrel type heat exchanger has simple and compact for structure, cost
The advantages that low, occupied area is small, and heat-transfer effect is good.It is be that treated protective gas, the cartridge type heat exchange from kiln gas in pipe in cylinder
Device makes to keep high flow condition from kiln gas in pipe, the protection in cylinder on the basis of keeping traditional heat exchangers efficient heat transfer
Gas keeps baffling rotation status, thus keep the protective gas heating effect in cylinder good, heat exchanger long period efficient operation.
Preferably, the waste heat heat riser 4 is tubular heat exchanger；Tubular heat exchanger is improved by centrifugal blower
The flowing velocity of protective gas in shell side increases the turbulence intensity of protective gas, destroys laminar boundary layer, makes it to tubulation
The package of surfaces externally and internally, simultaneously as protective gas and tubulation outer surface are in close contact, surface is also at the interior unofficial biography of tubulation
Hot face, thus by tubulation from kiln gas heat transfer to the protective gas in shell side, shell and tube heat exchange can be greatly improved
The rate of heat transfer of device.
Preferably, the waste heat heat riser 4 is efflux heat-exchanger.Efflux heat-exchanger has bigger heat exchange area, mentions
High heat exchange efficiency, highest complex heat transfer coefficient is big, easy to install and use, can be according to actual needs using horizontal or vertical peace
Dress can according to need any selection installation position, the long advantage of service life of equipment, protection from the inlet and outlet of kiln gas
Gas heating temperature is higher.
Preferably, the desiccant for assisting dehydration is equipped in dehumidification drying device 3.Contain by condensed flue gas micro-
Thin water mist particle still contains a small amount of water mist particle after centrifugal dehydration or eddy flow dehydration, then auxiliary using desiccant progress
Dehydration is helped, to the fine water mist particle in flue gas thoroughly be removed, so that eventually entering into the protective gas of heat-treatment furnace 10
Middle moisture-free.Desiccant in protective gas to be that moisture removal is more thorough, at low cost, effect is good.
Preferably, Resistant heating device 5 is equipped in the collet 42.Resistant heating device 5 can be from kiln gas
Start the Resistant heating device 5 under thermal energy is relatively low or the lower situation of ambient temperature to add protective gas
Heat, so that it is guaranteed that the protective gas reached in heat-treatment furnace 10 can achieve required temperature.
The present invention be by the completely burned product of natural gas by first deoxygenation, after dehumidifying process, using from kiln gas
Finally obtained protective gas is heated and is heated up again by waste heat, then by the protective gas loopback heat-treatment furnace after heating,
Make to prevent the outer air of furnace from entering in furnace in slight positive pressure state in heat-treatment furnace.The flue gas being ultimately delivered in heat-treatment furnace is only
Protective gas, the protective gas include N2、NOxAnd CO2。
This course of work: by 10 discharge of heat-treatment furnace outlet after combustion of natural gas, the smoke components of discharge are complicated, mainly
By N2、NOx、CO2、O2And H2O composition, O herein2Main source be heat-treatment furnace 10 import and export and heat-treatment furnace 10 weeks
The air of air and combustion air remaining after combustion that side seam gap enters, therefore need by open fire oxygen removal by combustion device 1
Burner 7 removes O2；Remove O2Entering in the de-watering apparatus 2 of quick water cooling from kiln gas afterwards, makes to be dropped from kiln gas
Temperature, wherein H2O condenses into condensed water through cooling, and condensed water drains into water storage tank 9 through leakage fluid dram 8；At this point, from kiln gas mainly at
It is divided into N2、NOx、CO2And a small amount of H2O, enters back into dehumidification drying device 3, further removes H a small amount of in above-mentioned flue gas2O,
In order to ensure thoroughly removing H2O is added desiccant in dehumidification drying device 3 and carries out auxiliary water removal；At process above section
Protective gas is eventually become from kiln gas after reason, i.e. protective gas includes N2、NOxAnd CO2, but the protective gas at this time
Temperature it is lower, need using waste-heat from kiln gas to certain temperature, i.e., by protective gas from protective gas import 421
It is discharged into collet 42, is from 41 bottom of liner from kiln gas by being heated from kiln gas to protective gas in liner 41
It is discharged to top, and protective gas is also that top is drained into from the bottom of collet 42, using the preheating from kiln gas to protection
Gas is heated, and contact area is big, and heating effect is good；Protective gas after heating is respectively fed to by blower, closed conduit
Each section of heat-treatment furnace 10 makes each section of micro-pressure operation of heat-treatment furnace 10.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (9)
1. being used for the loopback guard method of heat-treatment furnace flue gas, which comprises the following steps:
1) N will be contained2、NOx、CO2、O2And H2The high temperature of O composition is discharged into the liner of waste heat heat riser from kiln gas, from furnace
Flue gas passes through reaching in open fire oxygen removal by combustion device from kiln gas outlet through connecting pipe on liner；
It 2) will be from the O in kiln gas by open fire oxygen removal by combustion device2It removes；
3) O will be removed2Being discharged into de-watering apparatus from kiln gas afterwards removes part H in flue gas2O；
4) O will be removed2With part H2O's passes through dehumidification drying device from kiln gas for remaining H again2O is removed；
5) there is N for surplus2、NOxAnd CO2As protective gas be discharged into waste heat heat riser through protective gas import from kiln gas
It reaches in collet, protective gas is heated from kiln gas by initially entering the high temperature in liner, the protection after heating
Gas is reached in heat-treatment furnace by the protective gas outlet on collet through connecting pipe.
2. the device according to claim 1 for the loopback guard method of heat-treatment furnace flue gas, which is characterized in that including remaining
Hot heat riser, open fire oxygen removal by combustion device, de-watering apparatus, dehumidification drying device.
3. the device according to claim 2 for the loopback guard method of heat-treatment furnace flue gas, which is characterized in that described remaining
Hot heat riser includes liner and collet, and the collet is set on the inner bladder outer wall, and the liner at the bottom is equipped with from furnace cigarette
Gas import, top are equipped with to be exported from kiln gas, and the collet bottom is equipped with protective gas import, top goes out equipped with protective gas
Mouthful.
4. the device according to claim 2 for the loopback guard method of heat-treatment furnace flue gas, which is characterized in that it is described from
The connection of the exhanst gas outlet of kiln gas import and heat-treatment furnace, it is described from kiln gas outlet and the open fire oxygen removal by combustion device import
Connection, the open fire oxygen removal by combustion device outlet are connect with the import of the de-watering apparatus, the outlet of the de-watering apparatus and institute
The import connection of dehumidification drying device is stated, the leakage fluid dram of the de-watering apparatus is connect with water storage tank, the dehumidification drying device
Outlet is connected by pipeline with centrifugal blower import, and the centrifugal blower outlet is connected by pipeline and the protective gas import
It connects, the protective gas outlet is connect with the gas inlet of heat-treatment furnace.
5. the device according to claim 2 for the loopback guard method of heat-treatment furnace flue gas, which is characterized in that stated clearly
Burner is equipped in fiery oxygen removal by combustion device, the burner is located at the top of the open fire oxygen removal by combustion device or side wall.
6. the device according to claim 2 for the loopback guard method of heat-treatment furnace flue gas, which is characterized in that described to remove
Water installations are water cooler, and the water cooler is for making from H in kiln gas2O is condensed into condensed water, and the condensed water is from described
Leakage fluid dram is expelled in the water storage tank.
7. the device according to claim 2 for the loopback guard method of heat-treatment furnace flue gas, which is characterized in that described remaining
Hot heat riser is one of barrel type heat exchanger, tubular heat exchanger and efflux heat-exchanger.
8. the device according to claim 2 for the loopback guard method of heat-treatment furnace flue gas, which is characterized in that described to remove
The desiccant for assisting dehydration is equipped in wet drying device.
9. according to the described in any item devices for the loopback guard method of heat-treatment furnace flue gas of claim 2-8, feature exists
In equipped with Resistant heating device in the collet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811149992.9A CN109136499B (en) | 2018-09-29 | 2018-09-29 | Flue gas return protection method and device for heat treatment furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811149992.9A CN109136499B (en) | 2018-09-29 | 2018-09-29 | Flue gas return protection method and device for heat treatment furnace |
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| Publication Number | Publication Date |
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| CN109136499A true CN109136499A (en) | 2019-01-04 |
| CN109136499B CN109136499B (en) | 2020-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811149992.9A Active CN109136499B (en) | 2018-09-29 | 2018-09-29 | Flue gas return protection method and device for heat treatment furnace |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10195546A (en) * | 1996-12-27 | 1998-07-28 | Nippon Steel Corp | Method for controlling temperature of metal strip in continuous annealing furnace |
| CN201284352Y (en) * | 2008-09-28 | 2009-08-05 | 黄冈市华窑中洲窑炉有限公司 | Roller hearth flue gas shielding gas atmosphere steel pipe heat processing furnace |
| CN201959709U (en) * | 2011-01-22 | 2011-09-07 | 安徽工业大学 | Low-temperature smoke-gas residual-heat self-used type air-dehumidifying device |
| CN102319555A (en) * | 2011-06-27 | 2012-01-18 | 吴焕松 | Method and device for preparing oxygen-free protective gas by removing oxygen and impurities from air |
| CN202181447U (en) * | 2011-07-08 | 2012-04-04 | 镇江立达纤维工业有限责任公司 | Device for recycling afterheat of tail gas of drying box |
| CN203559094U (en) * | 2013-11-15 | 2014-04-23 | 北京京杰锐思技术开发有限公司 | Device for circulating shielding gas in thermal treatment furnace |
| CN207648804U (en) * | 2018-03-16 | 2018-07-24 | 北京华通兴远供热节能技术有限公司 | A kind of vapor removal device in burner backflow flue gas |
-
2018
- 2018-09-29 CN CN201811149992.9A patent/CN109136499B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10195546A (en) * | 1996-12-27 | 1998-07-28 | Nippon Steel Corp | Method for controlling temperature of metal strip in continuous annealing furnace |
| CN201284352Y (en) * | 2008-09-28 | 2009-08-05 | 黄冈市华窑中洲窑炉有限公司 | Roller hearth flue gas shielding gas atmosphere steel pipe heat processing furnace |
| CN201959709U (en) * | 2011-01-22 | 2011-09-07 | 安徽工业大学 | Low-temperature smoke-gas residual-heat self-used type air-dehumidifying device |
| CN102319555A (en) * | 2011-06-27 | 2012-01-18 | 吴焕松 | Method and device for preparing oxygen-free protective gas by removing oxygen and impurities from air |
| CN202181447U (en) * | 2011-07-08 | 2012-04-04 | 镇江立达纤维工业有限责任公司 | Device for recycling afterheat of tail gas of drying box |
| CN203559094U (en) * | 2013-11-15 | 2014-04-23 | 北京京杰锐思技术开发有限公司 | Device for circulating shielding gas in thermal treatment furnace |
| CN207648804U (en) * | 2018-03-16 | 2018-07-24 | 北京华通兴远供热节能技术有限公司 | A kind of vapor removal device in burner backflow flue gas |
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| CN109136499B (en) | 2020-01-21 |
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