CN203807179U - Waste heat recovery, electricity generating and heat supply system of graphitization furnace - Google Patents
Waste heat recovery, electricity generating and heat supply system of graphitization furnace Download PDFInfo
- Publication number
- CN203807179U CN203807179U CN201420177764.3U CN201420177764U CN203807179U CN 203807179 U CN203807179 U CN 203807179U CN 201420177764 U CN201420177764 U CN 201420177764U CN 203807179 U CN203807179 U CN 203807179U
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- graphitizing furnace
- waste heat
- air
- cooling
- graphitization
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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
-
- 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
Abstract
The utility model relates to a waste heat recovery, electricity generating and heat supply system of a graphitization furnace, belonging to the field of graphitization furnaces and industrial energy conservation. According to the system, the cooling manner of the graphitization furnace is changed into forced cooling from natural cooling, and the waste heat in the cooling process of the graphitization products is converted into steam and used for generating electricity and supplying heat through heat carrying gas. The system has the following specific structure: the body of the graphitization furnace is internally provided with a coiled tube type air heat exchanger, the air inlet of a cooling coil is connected with an air inlet collecting tube, which is connected with the outlet of a cooling fan, the inlet of the cooling fan is connected with the air outlet of a waste heat boiler, the air outlet of the cooling coil is connected with an air outlet collecting tube, which is connected with the air inlet of the waste heat boiler, and the waste heat boiler and a turbine system can realize electricity generation and heat supply. The novel graphitization furnace and a waste heat utilization device thereof remarkably improve the yield of the graphitization products, lower comprehensive energy consumption, and realize great improvement of the graphitization production technology.
Description
Technical field
The utility model belongs to graphitizing furnace and industrial energy saving field, particularly a kind of graphitizing furnace exhaust heat recovery power generation heating system.
Background technology
Graphitizing furnace is for the production of special carbon material products such as steel-making carbon anode material, cell negative electrode material, carbon fiber, graphite heat conducting material, crucible, carburizing agent, carbon composites, a common kiln production line comprises a plurality of identical body of heater unit, existing each body of heater of the old type of furnace is laterally divided into three layers from outside to inside: the about 0.5m of clay brick exterior wall, the about 0.8m of calcined coke thermal insulation layer, combustion chamber layer is the machined object bed of material and stopping composition (after-smithing petroleum coke) thereof.Operating process is: shove charge, and---energising heating also---is incubated---cooling---coming out of the stove by more than heating material to 2800 ℃, the present situation operational cycle is 15～20 days, wherein switches on approximately 2～3 days heat-up times, is incubated approximately 1～2 day, cooling approximately 8～11 days, come out of the stove, shove charge approximately 2～4 days.Adopt a set of transformer can only heat for a body of heater at every turn, belong to batch operation mode, the about 7000kW of average electrical heating power wherein, every stove current consumption approximately 350,000 kWh, therefore energy consumption is very large, belongs to " three height " industrial sector of highly energy-consuming, high pollution, maximum discharge.
The graphitizing furnace type of cooling adopts ambient air naturally to lower the temperature, consuming time longer.As comprised 9 bodies of heater, every stove by every production line, produce every year on average the special carbon goods of 20 stoves and calculate, every production line adds up to comes out of the stove 180 times, every annual current consumption of production line can reach 6,300 ten thousand kWh, as calculated by 0.9 yuan/kWh of electricity price, amounts to grid electricity fee cost and can reach 5,670 ten thousand yuan.This old graphitizing furnace type of furnace falls behind, and belongs to high energy consumption mode of operation.
The furnace binding of traditional natural cooling type graphitizing furnace as shown in Figure 1, wherein the process of cooling of graphitizing furnace relies on the naturally cooling between exterior wall outside and ambient air, therefore its speed of cooling reaches more than 8～10 days very slow, cooling time, has greatly affected the production capacity of production cycle and production line.
External Japan has developed the graphitizing furnace of novel continuous operation, material to be processed is mobile heating slowly, effectively reducing heat radiation scatters and disappears, the electricity charge have been saved, but its problem is that its temperature of charge is the highest can only be heated to approximately 2500 ℃, do not reach 2800 ℃ of above requirements, make the quality of its converted products and kind not as good as being exactly the static heating type of furnace, therefore not scale popularization in industry.
In sum, this field still can not guarantee product high quality, avoid expending a large amount of electric power and lost a large amount of waste heat energies and can carry out by waste heat recovery the graphitizing furnace production technique of power generation and heat supply again at present.Therefore, be necessary to seek design and the structure thereof of the brand-new graphitizing furnace type of cooling, to reach, significantly shorten cooling time, improve the object of production line production capacity.
Utility model content
The purpose of this utility model is for overcoming the weak point of prior art, a kind of graphitizing furnace exhaust heat recovery power generation heating system is proposed, creatively adopt the special heat-obtaining mode that air cooling apparatus is set in ultrahigh-temperature body of heater inside, by present situation naturally cooling, transform the type of cooling of graphitizing furnace as pressure cooling structure, reclaimed waste heat is carried out to power generation and heat supply simultaneously.
Specific descriptions of the present utility model are: a kind of graphitizing furnace exhaust heat recovery power generation heating system, wherein graphitizing furnace 1 is rectangular parallelepiped furnace type structure, ecto-entad is respectively exterior wall 2, thermal insulation layer 3 and combustion chamber 4, article one, graphitizing furnace production line comprises a plurality of independently graphitizing furnaces 1, No. 2 graphitizing furnace 8, N graphitizing furnace 9, it is characterized in that, described graphitizing furnace exhaust heat recovery power generation heating system is by the interior forced cooling device that is embedded in each graphitizing furnace, waste heat boiler and turbine driven set, blower fan and connecting pipeline form, wherein forced cooling device is one group of spiral coil cooling tube 6, inside be embedded in thermal insulation layer 3 inside in graphitizing furnace, the inner-wall surface of close exterior wall 2 is also in a row arranged along short transverse, wherein the blast inlet of spiral coil cooling tube 6 is connected with air intake collector 5, after gathering, the air intake collector 5 of each graphitizing furnace is connected with the air outlet of blower fan 10 by air intake house steward, the air outlet of spiral coil cooling tube 6 is connected with air-out collector 7, after gathering, the air-out collector 7 of each graphitizing furnace is connected with the blast inlet of waste heat boiler 11 by air-out house steward, the air outlet of waste heat boiler 11 is connected with the blast inlet of blower fan 10, the water-in of waste heat boiler 11 is connected with condenser 14 by service pump 13, the vapour outlet of waste heat boiler 11 is connected with the main steam import of steam turbine 15 by after superheater 12, the venting port of steam turbine 15 is connected with condenser.
Spiral coil cooling tube 6 adopts stainless pipe structure, and inner heat transferring medium is air or nitrogen.
Steam turbine 15 is provided with extraction opening.
Feature of the present utility model and beneficial effect: adopt ambient air naturally cooling mode to change into original graphitizing furnace and adopt the pressure type of cooling, thereby significantly shorten cooling time, the faster production cycle, improve unit production capacity, expectation can shorten to cooling time about 3～5 days, thereby can make the greying production cycle shorten to 10～12 days by 15～20 days, can improve production capacity 50%～70%.After being heated, cooling air is sent to waste heat boiler---and in turbine driven set, generate electricity, heat supply, realized UTILIZATION OF VESIDUAL HEAT IN.The utility model significantly improved greying product production capacity, reduced comprehensive energy consumption, realized heat recovery, the Important Techmical Progress with great-leap-forward meaning that belongs to greying products production field, has important energy-saving and emission-reduction benefit and economic and social benefits.
Accompanying drawing explanation
Fig. 1 is the traditional graphitizing furnace structural representation that adopts ambient air naturally cooling mode.
Fig. 2 is the embodiment schematic diagram of the graphitizing furnace exhaust heat recovery power generation heating system that adopts of the utility model.
In Fig. 1,2, each unit number and title are as follows.
Graphitizing furnace 1, exterior wall 2, thermal insulation layer 3, combustion chamber 4, air intake collector 5, spiral coil cooling tube 6, air-out collector 7, No. 2 graphitizing furnace 8, N graphitizing furnace 9, blower fan 10, waste heat boiler 11, superheater 12, service pump 13, condenser 14, steam turbine 15, generator 16, the cooling water inlet of condenser A, condenser cooling water outlet B, extracted steam from turbine C.
Embodiment
The graphitizing furnace exhaust heat recovery power generation heating system the utility model proposes, by reference to the accompanying drawings and embodiment describe in detail.
Specific embodiment of the utility model is as follows: graphitizing furnace exhaust heat recovery power generation heating system, by the interior forced cooling device that is embedded in each graphitizing furnace, waste heat boiler and turbine driven set, blower fan and connecting pipeline form, wherein forced cooling device is one group of spiral coil cooling tube 6, inside be embedded in thermal insulation layer 3 inside in graphitizing furnace, the inner-wall surface of close exterior wall 2 is also in a row arranged along short transverse, wherein the blast inlet of spiral coil cooling tube 6 is connected with air intake collector 5, after gathering, the air intake collector 5 of each graphitizing furnace is connected with the air outlet of blower fan 10 by air intake house steward, the air outlet of spiral coil cooling tube 6 is connected with air-out collector 7, after gathering, the air-out collector 7 of each graphitizing furnace is connected with the blast inlet of waste heat boiler 11 by air-out house steward, the air outlet of waste heat boiler 11 is connected with the blast inlet of blower fan 10, the water-in of waste heat boiler 11 is connected with condenser 14 by service pump 13, the vapour outlet of waste heat boiler 11 is connected with the main steam import of steam turbine 15 by after superheater 12, the venting port of steam turbine 15 is connected with condenser.Spiral coil cooling tube 6 adopts stainless pipe structure, and inner heat transferring medium is air, and steam turbine 15 is provided with extraction opening.
It should be noted that; the utility model adopts the design of built-in type gas converting heat Pipe bundle structure; and can have different concrete implementing measures according to this design; such as taking, bury the cast of spiral coil cooling tube tube bank in various or adopt heat pipe structure etc.; in the spiral coil cooling tube that in stove, both sides body of wall closes on, air flow line is consistent or contrary; steam turbine adopts pure condensate formula, extraction condensing type or back pressure type etc., and the embodiment that carries out similar simple deformation all falls into protection domain of the present utility model.
Claims (4)
1. a graphitizing furnace exhaust heat recovery power generation heating system, wherein graphitizing furnace (1) is rectangular parallelepiped furnace type structure, ecto-entad is respectively exterior wall (2), thermal insulation layer (3) and combustion chamber (4), article one, graphitizing furnace production line comprises a plurality of independently graphitizing furnaces (1), No. 2 graphitizing furnace (8), N graphitizing furnace (9), it is characterized in that, described graphitizing furnace exhaust heat recovery power generation heating system is by the interior forced cooling device that is embedded in each graphitizing furnace, waste heat boiler and turbine driven set, blower fan and connecting pipeline form, wherein forced cooling device is one group of spiral coil cooling tube (6), inside be embedded in thermal insulation layer (3) inside in graphitizing furnace, the inner-wall surface of close exterior wall (2) is also in a row arranged along short transverse, wherein the blast inlet of spiral coil cooling tube (6) is connected with air intake collector (5), after gathering, the air intake collector (5) of each graphitizing furnace is connected with the air outlet of blower fan (10) by air intake house steward, the air outlet of spiral coil cooling tube (6) is connected with air-out collector (7), after gathering, the air-out collector (7) of each graphitizing furnace is connected with the blast inlet of waste heat boiler (11) by air-out house steward, the air outlet of waste heat boiler (11) is connected with the blast inlet of blower fan (10), the water-in of waste heat boiler (11) is connected with condenser (14) by service pump (13), the vapour outlet of waste heat boiler (11) is connected with the main steam import of steam turbine (15) by after superheater (12), the venting port of steam turbine (15) is connected with condenser.
2. graphitizing furnace exhaust heat recovery power generation heating system as claimed in claim 1, is characterized in that, described spiral coil cooling tube (6) adopts stainless pipe structure.
3. graphitizing furnace exhaust heat recovery power generation heating system as claimed in claim 1, is characterized in that, the inside heat transferring medium of described spiral coil cooling tube (6) is air or nitrogen.
4. graphitizing furnace exhaust heat recovery power generation heating system as claimed in claim 1, is characterized in that, described steam turbine (15) is provided with extraction opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420177764.3U CN203807179U (en) | 2014-04-13 | 2014-04-13 | Waste heat recovery, electricity generating and heat supply system of graphitization furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420177764.3U CN203807179U (en) | 2014-04-13 | 2014-04-13 | Waste heat recovery, electricity generating and heat supply system of graphitization furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203807179U true CN203807179U (en) | 2014-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420177764.3U Expired - Fee Related CN203807179U (en) | 2014-04-13 | 2014-04-13 | Waste heat recovery, electricity generating and heat supply system of graphitization furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106829950A (en) * | 2016-04-15 | 2017-06-13 | 贵州顺安机电设备有限公司 | The power-economizing method and device of a kind of cascade graphitizing furnaces |
-
2014
- 2014-04-13 CN CN201420177764.3U patent/CN203807179U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106829950A (en) * | 2016-04-15 | 2017-06-13 | 贵州顺安机电设备有限公司 | The power-economizing method and device of a kind of cascade graphitizing furnaces |
| CN106829950B (en) * | 2016-04-15 | 2018-10-23 | 贵州顺安机电设备有限公司 | A kind of power-economizing method and device of cascade graphitizing furnaces |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20170413 |
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| CF01 | Termination of patent right due to non-payment of annual fee |