CN102910620A - Method and device for recycling waste heat of graphitized furnace - Google Patents
Method and device for recycling waste heat of graphitized furnace Download PDFInfo
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- CN102910620A CN102910620A CN2012103987711A CN201210398771A CN102910620A CN 102910620 A CN102910620 A CN 102910620A CN 2012103987711 A CN2012103987711 A CN 2012103987711A CN 201210398771 A CN201210398771 A CN 201210398771A CN 102910620 A CN102910620 A CN 102910620A
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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
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention relates to the field of the production of carbon materials, and in particular relates to a method and a device for recycling waste heat of a graphitized furnace. The method provided by the invention is characterized in that the heat energy of a resistance material and a heat-insulation heat-preservation material in the graphitized furnace is absorbed due to the direct contact of inert gas, so that the aim of waste heat recycle can be realized. The method comprises the following specific realization steps of: 1) enabling the resistance material which is more than 2500D DEG C and the heat-insulation heat-preservation material in a heat exchanger to exchange heat with the inert gas, and discharging the heat energy from a discharge opening arranged at the bottom end of the heat exchanger when the temperature is reduced to be less than 150 DEG C; and 2) exchanging the heat of the heated high-temperature inert gas in a waste heat furnace, heating heat conduction oil or water in the waste heat furnace, and transporting the heated heat conduction oil or water into the waste heat furnace through a circulating fan so as to be recycled. Compared with the prior art, the method and device provided by the invention have the beneficial effects that the heat energy of the graphitized furnace in the process of power-off cooling can be recycled by the inert gas, the energy dissipation caused by the loss of the waste heat can be avoided, and the heat exchange is carried out on the heated inert gas through the heat conduction oil or water in the waste heat furnace for heating or powering.
Description
Technical field
The present invention relates to the carbon material production field, relate in particular to a kind of method and device that reclaims the graphitizing furnace waste heat.
Background technology
At carbon material---need to consume a large amount of energy in the production of graphite product, the expense of energy consumption accounts for 30%～40% of carbon product production cost.And the graphitization process in the charcoal element production process, the rich and influential family of energy consumption especially, its power consumption will account for about 70% of the total power consumption of production of articles.Pack into roasting product in the stove of graphitizing furnace utilization jointly consists of stove with resistance material and hinders, energising is rear because " joule---Lenz's law " phenomenon, the high temperature that stove resistance generation is 2000～3000 ℃ makes roasting product be changed to graphite by fixed carbon, after this process is finished, need open bell, naturally cooling or water spray are forced cooling, in process of cooling, heat in the stove all scatters and disappears, and does not reclaim, and causes the significant wastage of energy.
Summary of the invention
The purpose of this invention is to provide a kind of method and device that reclaims the graphitizing furnace waste heat, reclaim the heat in the graphitizing furnace power failure process of cooling, the energy wastage of avoiding waste heat to scatter and disappear and cause, the heat after the recovery can be used to heating or generating.
For solving the problems of the technologies described above, technical scheme of the present invention is:
A kind of method that reclaims the graphitizing furnace waste heat, utilize the direct contact of rare gas element, by thermal conduction, thermal convection and thermal-radiating mode, the heat of resistance material and adiabatic heat-insulation material in the absorption graphitizing furnace, realize the purpose of recovery waste heat, its specific implementation step is as follows:
1) resistance material more than 2500 ℃ and adiabatic heat-insulation material are entered interchanger via the chute under the relief hole of graphitizing furnace furnace bottom, rare gas element is entered with resistance material and adiabatic heat-insulation material by the interchanger bottom and carries out heat exchange, when the temperature of resistance material and adiabatic heat-insulation material is reduced to below 150 ℃, discharged by the discharge gate of interchanger bottom;
2) high temperature inert gas that is warming up to more than 800 ℃ enters annular passage through chute, by entering residual heat boiler for exchanging heat after the cleaning apparatus dedusting, thermal oil or water in the heating waste heat boiler, the rare gas element that temperature drops to below 150 ℃ enters the further dedusting of tornado dust collector, then sends into the interchanger recycle by recirculation blower.
The exit of the relief hole of described graphitizing furnace furnace bottom is provided with turnover panel.
A kind of device that reclaims the graphitizing furnace waste heat, comprise interchanger, cleaning apparatus, waste heat boiler, tornado dust collector and recirculation blower, interchanger is vertical structure, the interchanger top arranges bell, the interchanger bottom is provided with discharge gate, annular passage is around in the interchanger periphery, interchanger is inner to be connected by a plurality of chutes with the annular passage bottom, the outlet of the top of annular passage by pipeline successively with cleaning apparatus, waste heat boiler, tornado dust collector sequentially link to each other with the recirculation blower air intake vent, and the air outlet of recirculation blower is connected with the central blast cap of being located at interchanger discharge gate top by the air channel.
Described bell is served as reasons upper to the lower stacked dual structure that bell one and bell two compositions are set, and bell one width is less than bell two.
Compared with prior art, the invention has the beneficial effects as follows: by the heat in the rare gas element recovery graphitizing furnace power failure process of cooling, the energy wastage of avoiding waste heat to scatter and disappear and cause, rare gas element after the intensification carries out heat exchange via the thermal oil in the waste heat boiler or water again, be used for heating or generating, can be according to the production technique flexible choice.
Description of drawings
Fig. 1 is the process structure synoptic diagram of the embodiment of the invention;
Fig. 2 is reverse turning bed structure synoptic diagram of the present invention.
Among the figure: 1-graphitizing furnace 2-resistance material and the blast cap 19-of adiabatic heat-insulation material 3-electrode 4-graphite material 5-relief hole 6-chute 7-interchanger 8-turnover panel 9-cleaning apparatus 10-waste heat boiler 11-tornado dust collector 12-recirculation blower 13-discharge gate 14-bell one 15-bell two 16-cooling section 17-air channel 18-central authorities chute 20-annular passage
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described further:
See Fig. 1, it is the process structure synoptic diagram of the embodiment of the invention, in graphitization technique, be graphite material 4 in the stove of graphitizing furnace 1, be resistance material and adiabatic heat-insulation material 2 around the graphite material 4, electrode 3 is positioned at the two ends of graphitizing furnace 1, and graphitizing furnace 1 bottom discharging hole 5 links to each other with interchanger 7 through chute 6.
A kind of device that reclaims the graphitizing furnace waste heat of the present invention, comprise interchanger 7, cleaning apparatus 9, waste heat boiler 10, tornado dust collector 11 and recirculation blower 12, interchanger 7 is vertical structure, interchanger 7 tops are provided with the stacked bell that the dual structure of bell 1 and bell 2 15 compositions is set from top to bottom, interchanger 7 bottoms are provided with discharge gate 13, annular passage 20 is around in interchanger 7 peripheries, the cooling section 16 of interchanger 7 inside is connected by a plurality of chutes 19 with annular passage 20 bottoms, the outlet of the top of annular passage 20 by pipeline successively with cleaning apparatus 9, waste heat boiler 10, tornado dust collector 11 sequentially link to each other with recirculation blower 12 air intake vents, and the air outlet of recirculation blower 12 is connected with the central blast cap 18 of being located at interchanger discharge gate top by air channel 17.
Recovery waste heat device one of the present invention overlaps configurable two graphitizing furnaces of giving, two graphitizing furnace production cycles are staggered, wherein one in logical electrically heated process, another cooling that has a power failure is to guarantee in the waste-heat recovery device the uninterrupted supply of resistance material and adiabatic heat-insulation material, assurance device moves continuously, and can improve speed of cooling, and improve operating efficiency, improve output.
A kind of method that reclaims the graphitizing furnace waste heat of the present invention, do not affecting under the normal discharging operating condition, utilize rare gas element directly to contact, by thermal conduction, thermal convection and thermal-radiating mode, the heat of resistance material and adiabatic heat-insulation material in the absorption graphitizing furnace, realize the purpose of recovery waste heat, its specific implementation step is as follows:
1) resistance material more than 2500 ℃ and adiabatic heat-insulation material 2 are entered interchanger 4 via the chute 6 under the relief hole 5 of graphitizing furnace furnace bottom, close bell 1, open bell 2 15, the cooling section 16 of resistance material and adiabatic heat-insulation material 2 inflow heat exchangers 7, rare gas element is evenly entered by the central blast cap 18 of interchanger 7 bottoms, carry out heat exchange with resistance material and adiabatic heat-insulation material 2, when the temperature of resistance material and adiabatic heat-insulation material 2 is reduced to below 150 ℃, discharged by the discharge gate 13 of interchanger bottom; Bell one 14 width are less than bell 2 15, and the design of dual structure bell can guarantee the evenly lasting supply of resistance material and adiabatic heat-insulation material 2, prevents that rare gas element from leaking, and suppresses dust and improves Working environment.
2) high temperature inert gas that is warming up to more than 800 ℃ enters annular passage 20 through chute 19, by entering waste heat boiler 10 heat exchange after cleaning apparatus 9 dedustings, thermal oil or water in the heating waste heat boiler 10, the rare gas element that temperature drops to below 150 ℃ enters tornado dust collector 11 further dedustings, to reduce the wearing and tearing to recirculation blower 12, then send the interchanger recycle back to by recirculation blower 12.
When being heated working medium in the waste heat boiler 10 and being water, can produce 480 ℃, the high temperature and high pressure steam of 4.6MPa is used for generating.
See Fig. 2, the exit of the relief hole 5 of graphitizing furnace 1 furnace bottom is provided with turnover panel 8.Obstruct between relief hole 5 and the chute 6 realizes by turnover panel 8, and turnover panel 8 is made by insulating refractories, plays the effect of isolated insulation in graphitizing furnace heat-processed, can control the speed that material falls in process of cooling.
Graphitizing furnace is in energising heat-processed, and turnover panel 8 is closing condition, in process of cooling, opens turnover panel 8, and resistance material and adiabatic heat-insulation material 2 fall in the interchanger 7.
Can adopt PLC and microcomputer to control in apparatus of the present invention, Controlling System interlock with graphitizing furnace, after graphitizing furnace is stopped power supply, automatically control the startup of turnover panel, bell one and bell two and close, guarantee resistance material and adiabatic heat-insulation material continue enter in the interchanger equably.Microcomputer also can the controlled circulation rare gas element flow, the running status of waste heat boiler is monitored, can regulate according to needs of production temperature and the pressure of thermal oil or steam, level of automation is high.
Claims (4)
1. a method that reclaims the graphitizing furnace waste heat is characterized in that, utilizes the direct contact of rare gas element, the heat of resistance material and adiabatic heat-insulation material in the absorption graphitizing furnace, and the purpose of realization recovery waste heat, its specific implementation step is as follows:
1) resistance material more than 2500 ℃ and adiabatic heat-insulation material are entered interchanger via the chute under the relief hole of graphitizing furnace furnace bottom, rare gas element is entered with resistance material and adiabatic heat-insulation material by the interchanger bottom and carries out heat exchange, when the temperature of resistance material and adiabatic heat-insulation material is reduced to below 150 ℃, discharged by the discharge gate of interchanger bottom;
2) high temperature inert gas that is warming up to more than 800 ℃ enters annular passage through chute, by entering residual heat boiler for exchanging heat after the cleaning apparatus dedusting, thermal oil or water in the heating waste heat boiler, the rare gas element that temperature drops to below 150 ℃ enters the further dedusting of tornado dust collector, then sends into the interchanger recycle by recirculation blower.
2. a kind of method that reclaims the graphitizing furnace waste heat according to claim 1 is characterized in that the exit of the relief hole of described graphitizing furnace furnace bottom is provided with turnover panel.
3. device that reclaims the graphitizing furnace waste heat, it is characterized in that, comprise interchanger, cleaning apparatus, waste heat boiler, tornado dust collector and recirculation blower, interchanger is vertical structure, the interchanger top arranges bell, the interchanger bottom is provided with discharge gate, annular passage is around in the interchanger periphery, interchanger is inner to be connected by a plurality of chutes with the annular passage bottom, the outlet of the top of annular passage by pipeline successively with cleaning apparatus, waste heat boiler, tornado dust collector sequentially link to each other with the recirculation blower air intake vent, and the air outlet of recirculation blower is connected with the central blast cap of being located at interchanger discharge gate top by the air channel.
4. a kind of device that reclaims the graphitizing furnace waste heat according to claim 3 is characterized in that, described bell is served as reasons upper to the lower stacked dual structure that bell one and bell two compositions are set, and bell one width is less than bell two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210398771.1A CN102910620B (en) | 2012-10-18 | 2012-10-18 | Method and device for recycling waste heat of graphitized furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210398771.1A CN102910620B (en) | 2012-10-18 | 2012-10-18 | Method and device for recycling waste heat of graphitized furnace |
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| CN102910620A true CN102910620A (en) | 2013-02-06 |
| CN102910620B CN102910620B (en) | 2014-10-08 |
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| CN201210398771.1A Expired - Fee Related CN102910620B (en) | 2012-10-18 | 2012-10-18 | Method and device for recycling waste heat of graphitized furnace |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108545735A (en) * | 2018-06-27 | 2018-09-18 | 湖北红业建材科技开发有限公司 | A kind of turntable continous way graphite tube graphitizing furnace and graphitizing method is carried out to graphite tube |
| CN116951962A (en) * | 2023-08-10 | 2023-10-27 | 郑州丰毅新材料科技有限公司 | Graphitizing furnace, control system thereof and graphitizing method |
Citations (7)
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|---|---|---|---|---|
| DE2832564A1 (en) * | 1978-07-25 | 1980-02-07 | Sigri Elektrographit Gmbh | Heat recovery from graphite furnaces - using recirculating coke as insulation material and passing this over or through heat exchangers and then returning it to furnace |
| CN102012170A (en) * | 2010-12-31 | 2011-04-13 | 邹岳明 | High-temperature heat energy recycling converter |
| CN102199680A (en) * | 2011-04-19 | 2011-09-28 | 黄道兵 | Cyclical low-carbon metallurgical method with tail gas conversion by plasma |
| CN102264450A (en) * | 2008-10-23 | 2011-11-30 | 西门子Vai金属科技有限责任公司 | Method and device for separating particulate solids from gas flow |
| CN102445075A (en) * | 2011-12-15 | 2012-05-09 | 邹建明 | Heating recycling method and device of medium frequency induction roaster |
| CN102494543A (en) * | 2011-12-09 | 2012-06-13 | 上海泰豪智能节能技术有限公司 | Tunnel kiln waste heat recovery device and method |
| CN202898039U (en) * | 2012-10-18 | 2013-04-24 | 中钢集团鞍山热能研究院有限公司 | Device for recovering waste heat of graphitization furnace |
-
2012
- 2012-10-18 CN CN201210398771.1A patent/CN102910620B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2832564A1 (en) * | 1978-07-25 | 1980-02-07 | Sigri Elektrographit Gmbh | Heat recovery from graphite furnaces - using recirculating coke as insulation material and passing this over or through heat exchangers and then returning it to furnace |
| CN102264450A (en) * | 2008-10-23 | 2011-11-30 | 西门子Vai金属科技有限责任公司 | Method and device for separating particulate solids from gas flow |
| CN102012170A (en) * | 2010-12-31 | 2011-04-13 | 邹岳明 | High-temperature heat energy recycling converter |
| CN102199680A (en) * | 2011-04-19 | 2011-09-28 | 黄道兵 | Cyclical low-carbon metallurgical method with tail gas conversion by plasma |
| CN102494543A (en) * | 2011-12-09 | 2012-06-13 | 上海泰豪智能节能技术有限公司 | Tunnel kiln waste heat recovery device and method |
| CN102445075A (en) * | 2011-12-15 | 2012-05-09 | 邹建明 | Heating recycling method and device of medium frequency induction roaster |
| CN202898039U (en) * | 2012-10-18 | 2013-04-24 | 中钢集团鞍山热能研究院有限公司 | Device for recovering waste heat of graphitization furnace |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108545735A (en) * | 2018-06-27 | 2018-09-18 | 湖北红业建材科技开发有限公司 | A kind of turntable continous way graphite tube graphitizing furnace and graphitizing method is carried out to graphite tube |
| CN116951962A (en) * | 2023-08-10 | 2023-10-27 | 郑州丰毅新材料科技有限公司 | Graphitizing furnace, control system thereof and graphitizing method |
| CN116951962B (en) * | 2023-08-10 | 2024-01-30 | 郑州丰毅新材料科技有限公司 | Graphitizing furnace, control system thereof and graphitizing method |
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| CN102910620B (en) | 2014-10-08 |
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