CN104848704B - A kind of electric furnace flue gas waste heat is vaporized entirely, heat accumulating type recovery system and its method of work - Google Patents
A kind of electric furnace flue gas waste heat is vaporized entirely, heat accumulating type recovery system and its method of work Download PDFInfo
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Abstract
A kind of electric furnace flue gas waste heat is vaporized entirely, heat accumulating type recovery system, is connected with intermittent high-temperature flue gas regenerative apparatus and heat convection superheater between the combustion settling chamber and heat convection evaporimeter in turn.Intermittent high-temperature flue gas regenerative apparatus and heat convection superheater is set up in existing flue gas waste heat recovery system, wherein, the intermittence high-temperature flue gas regenerative apparatus is applied to the high-temperature flue gas outlet of combustion settling chamber, when electric furnace because when there is flue gas flow, temperature fluctuation when feeding, inhale, using heat storage, the steady output that flue-gas temperature is realized in exothermic reaction：When normal smelting, electric furnace output flue-gas temperature is higher, after the intermittence high-temperature flue gas regenerative apparatus, its partial heat is absorbed by the heat storage, and when electric furnace charging, its output flue-gas temperature is relatively low, after intermittent high-temperature flue gas regenerative apparatus, low-temperature flue gas reuptake the heat in accumulation of heat body, and then complete to stablize heat accumulation function, it is ensured that subsequent heat produces high-quality steam.
Description
Technical field
The present invention relates to a kind of electric furnace flue gas waste heat vaporize entirely, heat accumulating type recovery system and its method of work, belong to electric furnace
Smelt the technical field of recovery energy.
Background technology
Traditional electric furnace flue gas take circulating water, and not only residual heat resources do not reclaim but also expend substantial amounts of electric energy, and
Existing electric furnace flue gas waste heat recovery has been carried out.But the organic efficiency, security of current electric boiler flue gas waste heat recovery system,
There are problems in the aspects such as the matching with electric furnace smelting operating mode, system recovered steam quality.These problems constrain electric furnace
The popularization of fume afterheat technology and development.
Low in terms of the organic efficiency of electric boiler flue gas waste heat recovery system, subject matter is existing electric furnace residual neat recovering system
Different degrees of presence water-cooled section, is not carried out full Vaporizing cooling.
In terms of security, existing residual neat recovering system does not consider flue gas accumulation of heat problem so convection current is steamed in residual neat recovering system
Sending out device design and processing and fabricating being designed for 1000 DEG C according to electric furnace flue gas peak temperature, this will to residual neat recovering system processing and fabricating
Ask high, and the problems such as flue gas frequent fluctuation is easily caused pad and snaps, and then considerable influence is produced safely to system operation.
And existing residual neat recovering system design water-cooled and Vaporizing cooling mixing, having that subsidiary engine equipment is many, system arranges challenge, with
When medium pipe arrangement difficult.
In terms of residual neat recovering system recovered steam quality, current electric boiler flue gas waste heat recovery system receives electric furnace smelting property
Flue gas is determined in cyclic fluctuation state, flue gas also has low temperature period, high temperature period residual neat recovering system by the high temperature period
Output steam and low temperature period not producing steam, while continuous steam superheating can not be realized.
Content of the invention
For the deficiencies in the prior art, a kind of electric furnace flue gas waste heat of present invention offer is vaporized entirely, heat accumulating type recovery system.
The present invention also provides a kind of method of work of said system.
Technical scheme is as follows：
A kind of electric furnace flue gas waste heat is vaporized entirely, heat accumulating type recovery system, is led to including electric furnace body, exhaust gases passes one, flue gas
Road two, deduster, chimney；The top flue gas of the electric furnace body is connected with the deduster by exhaust gases passes one；The electricity
The inside smoke of furnace body is connected with the deduster by the 4th hole of electric furnace body, exhaust gases passes two；The exhaust gases passes two
Including the guiding device, combustion settling chamber, heat convection evaporimeter and the economizer that are sequentially connected, it is characterised in that in the combustion
Burn between expansion chamber and heat convection evaporimeter and be connected with intermittent high-temperature flue gas regenerative apparatus and heat convection superheater in turn.
The advantage for designing herein is, sets up intermittent high-temperature flue gas regenerative apparatus and convection current in existing flue gas waste heat recovery system
Heat exchange superheater, wherein, the intermittence high-temperature flue gas regenerative apparatus is applied to the high-temperature flue gas outlet of combustion settling chamber, works as electricity
Stove is inhaled exothermic reaction using heat storage and realizes the steady defeated of flue-gas temperature because when there is flue gas flow, temperature fluctuation when feeding
Go out：When normal smelting, electric furnace output flue-gas temperature is higher, after the intermittence high-temperature flue gas regenerative apparatus, its part
Heat is absorbed by the heat storage；When electric furnace charging, its output flue-gas temperature is relatively low, is filled by intermittent high-temperature flue gas accumulation of heat
Postpone, low-temperature flue gas reuptake the heat in accumulation of heat body, and then complete to stablize heat accumulation function, it is ensured that subsequent heat produces Gao Pin
Matter superheated steam.
According to currently preferred, in the electric furnace body, guiding device, combustion settling chamber, heat convection superheater, right
The outside of stream heat exchanging evaporator and economizer is correspondingly arranged on electric furnace body cooling coil, guiding device cooling coil, combustion respectively
Burn expansion chamber cooling coil, heat convection superheater cooling coil, heat convection evaporimeter cooling coil and economizer cooling row
Pipe；The exhaust gases passes two also include drum, and the drum is filled with electric furnace body cooling coil, water conservancy diversion respectively by circulation line
Put cooling coil to be connected with combustion settling chamber cooling coil；The drum is also by circulation line and the heat convection evaporimeter
Cooling coil is connected；The arrival end of the heat convection superheater cooling coil is connected with the drum.
According to currently preferred, drum and electric furnace body cooling coil, guiding device cooling coil and combustion settling chamber
Forced circulation pump is provided with the connected circulation line of cooling coil.The advantage for designing herein is that the present invention is strong by introducing
Circulating pump processed carries out convection circulation to the saturation water in drum, increases exhaust-heat absorption, improves steam production and improves system safety
Property.
According to currently preferred, the exhaust gases passes two also include boiler feed pump, oxygen-eliminating device and boiler water-feeding device,
The arrival end of the economizer cooling coil is connected with boiler feed pump, oxygen-eliminating device and boiler water-feeding device successively, province's coal
The port of export of device cooling coil is connected with the drum.
According to currently preferred, heat exchanger is additionally provided with the outlet of province's coal gas.The advantage for designing herein is,
Reduce the temperature of flue gas further by external exhaust-heat absorption equipment, the flue gas so as to ensure arrival deduster is unlikely to temperature mistake
There is burning bag phenomenon in height, while also reducing flue gas water conservancy diversion speed, reduces blower fan installed power, while external exhaust-heat absorption equipment enters
One step Mist heat recovering.
According to currently preferred, the exhaust gases passes one include the dust excluding hood being sequentially connected and the first pipeline；Described remove
Dirt device includes connected dust-removal cloth-bag and blower fan, and the dust-removal cloth-bag is for folding circular filter cloth bag.
According to currently preferred, the guiding device, the water conservancy diversion main body including straight section shape and built-in sliding sleeve, lead described
Entrance is provided with the upper end side wall of stream main body, the lower end of the water conservancy diversion main body is provided with outlet；The built-in sliding sleeve is arranged
In the porch.The water conservancy diversion body design of water conservancy diversion flue gas is straight section shape by the present invention, by designing built-in sliding sleeve, will originally
The horizontal straight section of flue is omitted and is simplified, and makes flue dust not have deposition space, has prevented deposition of the flue gas to guiding device, reduces equipment
Safeguard cleaning and repair rate.In application, the water conservancy diversion main body is connected with the 4th hole of electric furnace body by built-in sliding sleeve,
The outlet of the water conservancy diversion main body is connected with combustion settling chamber.
According to currently preferred, the water conservancy diversion main body is 45 ° -90 ° with the angle of horizontal plane.The advantage for designing herein exists
In：Make water conservancy diversion main body have certain angle with combustion settling chamber, be easy to flue dust to slip into naturally the burning under gravity
Sedimentation is indoor, while also having buffered sidewall impact of the flue gas to the guiding device, water conservancy diversion is more smooth.
According to currently preferred, the intermittence high-temperature flue gas regenerative apparatus, including accumulation of heat main body, smoke inlet and cigarette
Gas is exported, and the accumulation of heat main body is connected with the high-temperature flue gas outlet of combustion settling chamber by smoke inlet, the accumulation of heat main body
Including housing, from bottom to top it is disposed with bracing frame, supports grate plate, heat storage and top soot blowing dress in the enclosure interior
Put；The heat storage includes the passage of a plurality of confession flue gas water conservancy diversion.The present invention is applied to the high-temperature flue gas outlet of combustion settling chamber, when
Because when there is flue gas flow, temperature fluctuation when feeding, the present invention can inhale exothermic reaction using heat storage and realize flue gas electric furnace
The steady output of temperature：When normal smelting, electric furnace output flue-gas temperature is higher, and after the present invention, its partial heat is by institute
Heat storage absorption is stated, when electric furnace charging, its output flue-gas temperature is relatively low, and after invention, low-temperature flue gas reuptake accumulation of heat
Internal heat, and then complete to stablize heat accumulation function, it is ensured that subsequent heat produces high-quality steam.
According to currently preferred, the heat storage is the heat storage of resistance to material or metal heat storage.
According to currently preferred, the diameter range of the passage is 30-150mm.The advantage for designing herein is, adopts
Wide-aperture passage, prevents heat storage exhaust gases passes from being blocked by dust.
According to currently preferred, in support frame as described above, cooling duct is provided with, the cooling duct and the drum
It is connected.
A kind of method of work of said system is as follows including step：
1) when electric furnace charging：
One conducting of exhaust gases passes is made, and makes the electric furnace body top flue gas dust-removal cloth-bag, blower fan and cigarette be entered along dust excluding hood
Chimney；
Exhaust gases passes two are made to close or partially ON；Meanwhile, adjust fan induced draught amount and the exhaust gases passes one and flue gas
The total blast volume of both passages two matches；
2) when electric furnace charging finish start smelt when：
Make one closing of exhaust gases passes；
Two conducting of exhaust gases passes is made, and makes the flue gas inside the electric furnace body dust-removal cloth-bag, wind be entered along exhaust gases passes two
Machine and chimney；Meanwhile, the air quantity for adjusting fan induced draught amount with the exhaust gases passes two matches.
The advantage for designing herein is that the present invention regulates and controls exhaust gases passes one, flue gas according to the progress of work of electric furnace body and leads to
Road one is respectively turned on or partially ON, makes the blower fan reach exhaust gases passes one and summation both exhaust gases passes two without the need for configuration,
Therefore the installed capacity of blower fan is substantially reduced, reduces investment；Reduce operating cost；The worry airspeed of deduster is also reduced, is carried
High efficiency of dust collection, minimizing impact of the flue gas to whole system.
Advantage of the invention is that：
1st, intermittent high-temperature flue gas regenerative apparatus is set up in existing flue gas waste heat recovery system and heat convection is overheated
Device, wherein, the intermittence high-temperature flue gas regenerative apparatus is applied to the high-temperature flue gas outlet of combustion settling chamber, when electric furnace because adding
When occurring flue gas flow, temperature fluctuation during material, inhale, using heat storage, the steady output that flue-gas temperature is realized in exothermic reaction：When normal
During smelting, electric furnace output flue-gas temperature is higher, and after the intermittence high-temperature flue gas regenerative apparatus, its partial heat is described
Heat storage absorbs, and when electric furnace charging, its output flue-gas temperature is relatively low, after intermittent high-temperature flue gas regenerative apparatus, low temperature
Flue gas reuptakes the heat in accumulation of heat body, and then completes to stablize heat accumulation function, it is ensured that subsequent heat produces high-quality steam.This
The high-temperature flue gas that invention is fluctuated when being produced electric furnace by intermittent high-temperature flue gas regenerative apparatus be changed into 500 DEG C 600 DEG C it
Between basicly stable middle temperature flue gas, so, in residual neat recovering system in pressure drum output saturated vapor amount fluctuate less, saturation
It is continuously overheated that steam can be realized using heat convection superheater.Steam superheating causes 300 DEG C -- steam quality is improve after 350 DEG C,
Can utilize this steam for generate electricity etc. to go to higher field to steam quality.In addition the basicly stable rear waste heat of steam output is returned
Receipts system no longer arranges steam accumulator, saves system investments and floor space.
2nd, the present invention carries out convection circulation by introducing forced circulation pump to the saturation water in drum, increases exhaust-heat absorption,
Improve quantity of steam.
3rd, the present invention reduces the temperature of flue gas further by external exhaust-heat absorption equipment, so as to ensure to reach deduster
Flue gas is unlikely to that temperature is too high burning bag phenomenon occurs, while also reducing flue gas water conservancy diversion speed, reducing blower fan installed power, increasing cigarette
Gas waste heat recovery ability.
4th, the water conservancy diversion body design of water conservancy diversion flue gas is straight section shape by the present invention, by designing built-in sliding sleeve, by script cigarette
The horizontal straight section in road is omitted and is simplified, and makes flue dust not have deposition space, has prevented deposition of the flue gas to guiding device, reduces equipment dimension
Shield cleaning and repair rate.In application, the water conservancy diversion main body is connected with the 4th hole of electric furnace body by built-in sliding sleeve, institute
The outlet for stating water conservancy diversion main body is connected with combustion settling chamber.
5th, the present invention is applied to the high-temperature flue gas outlet of combustion settling chamber, when electric furnace because charging when occur flue gas flow,
During temperature fluctuation, the present invention can inhale, using heat storage, the steady output that flue-gas temperature is realized in exothermic reaction：When normal smelting,
Electric furnace output flue-gas temperature is higher, and after the present invention, its partial heat is absorbed by the heat storage, when electric furnace charging, its
Output flue-gas temperature is relatively low, and after invention, low-temperature flue gas reuptake the heat in accumulation of heat body, and then completes to stablize accumulation of heat work(
Can, it is ensured that subsequent heat produces high-quality steam.
6th, the present invention regulates and controls exhaust gases passes one, exhaust gases passes one according to the progress of work of electric furnace body and is respectively turned on or part
Conducting, makes the blower fan reach exhaust gases passes one and summation both exhaust gases passes two without the need for configuration, therefore substantially reduces blower fan
Installed capacity, reduces investment；Reduce operating cost；The worry airspeed of deduster is also reduced, efficiency of dust collection is improve, reduce cigarette
Impact of the gas to whole system.
Description of the drawings
Fig. 1 is the overall structure diagram of system of the present invention；
Fig. 2 is the structural representation of guiding device of the present invention；
Fig. 3 is the structural representation of intermittence high-temperature flue gas regenerative apparatus of the present invention；
In fig. 1-3,1, electric furnace body；2nd, exhaust gases passes one；3rd, exhaust gases passes two；
4th, deduster；4-1, dust-removal cloth-bag；4-2, blower fan；
5th, chimney；6th, electric furnace smelting state monitoring apparatus；7th, air quantity adjusts PLC；8th, control valve one；9th, control valve two；10、
Dust excluding hood；11st, the first pipeline；
12nd, guiding device；12-1 water conservancy diversion main body；12-2, built-in sliding sleeve；12-3 is in the upper end side wall of the water conservancy diversion main body
On be provided with entrance；12-4, the lower end of the water conservancy diversion main body is provided with outlet；
13rd, combustion settling chamber；
14th, intermittent high-temperature flue gas regenerative apparatus；14-1, accumulation of heat main body；14-2, smoke inlet；14-3, exhanst gas outlet；
14-4, the high-temperature flue gas outlet of combustion settling chamber；14-5, housing；14-6, passage；14-7, bracing frame；14-8 supports grate plate；
14-9, heat storage；14-10, top soot blower；14-11, cooling duct；
15th, drum；16th, the 4th hole of electric furnace body；17th, heat convection superheater；18th, heat convection evaporimeter；19th, save
Coal device；20th, forced circulation pump；21st, boiler feed pump；22nd, oxygen-eliminating device；23rd, boiler water-feeding device.
Specific embodiment
The present invention is described in detail with reference to embodiment and Figure of description, but not limited to this.
As Figure 1-3.
Embodiment 1,
A kind of electric furnace flue gas waste heat is vaporized entirely, heat accumulating type recovery system, including electric furnace body 1, exhaust gases passes one 2, flue gas
Passage 23, deduster 4, chimney 5；The top flue gas of the electric furnace body 1 is by exhaust gases passes 1 and 4 phase of the deduster
Even；The inside smoke of the electric furnace body 1 is connected with the deduster 4 by the 4th hole 16 of electric furnace body, exhaust gases passes 23；
The exhaust gases passes 23 include guiding device 12, combustion settling chamber 13, heat convection evaporimeter 18 and the economizer being sequentially connected
19, it is connected with intermittent high-temperature flue gas regenerative apparatus 14 between the combustion settling chamber 13 and heat convection evaporimeter 18 in turn
With heat convection superheater 17.
Embodiment 2,
As described in Example 1 a kind of electric furnace flue gas waste heat vaporize entirely, heat accumulating type recovery system, its difference is, in institute
State electric furnace body 1, guiding device 12, combustion settling chamber 13, heat convection superheater 17, heat convection evaporimeter 18 and economizer
19 outside is correspondingly arranged on electric furnace body cooling coil, guiding device cooling coil, combustion settling chamber cooling coil, right respectively
Stream heat exchange superheater cooling coil, heat convection evaporimeter cooling coil and economizer cooling coil；The exhaust gases passes 23 are also
Including drum 15, the drum 15 by circulation line respectively with electric furnace body cooling coil, guiding device cooling coil and combustion
Burn expansion chamber cooling coil to be connected；The drum 15 is also by circulation line and the heat convection evaporimeter cooling coil phase
Even；The arrival end of the heat convection superheater cooling coil is connected with the drum 15.
Embodiment 3,
As described in Example 2 a kind of electric furnace flue gas waste heat vaporize entirely, heat accumulating type recovery system, its difference is, drum
Arrange on 15 circulation lines connected with electric furnace body cooling coil, guiding device cooling coil and combustion settling chamber cooling coil
There is forced circulation pump 20.
The exhaust gases passes 23 also include boiler feed pump 21, oxygen-eliminating device 22 and boiler water-feeding device 23, the economizer
The arrival end of cooling coil is connected with boiler feed pump 21, oxygen-eliminating device 22 and boiler water-feeding device 23 successively, and the economizer is cold
But the port of export of comb is connected with the drum 15.
Embodiment 4,
As described in Example 1 a kind of electric furnace flue gas waste heat vaporize entirely, heat accumulating type recovery system, its difference is, in institute
The outlet for stating province's coal gas 19 is additionally provided with heat exchanger.
Embodiment 5,
As described in Example 1 a kind of electric furnace flue gas waste heat vaporize entirely, heat accumulating type recovery system, its difference is, described
Exhaust gases passes 1 include the dust excluding hood 10 being sequentially connected and the first pipeline 11；The deduster 4 includes connected dust-removal cloth-bag
4-1 and blower fan 4-2, the dust-removal cloth-bag 4-1 are for folding circular filter cloth bag.
Embodiment 6,
As described in Example 1 a kind of electric furnace flue gas waste heat vaporize entirely, heat accumulating type recovery system, its difference is, described
Guiding device 12, water conservancy diversion main body 12-1 including straight section shape and built-in sliding sleeve 12-2, in the upper end side of water conservancy diversion main body 12-1
Entrance 12-3 is provided with wall, and the lower end of the water conservancy diversion main body is provided with outlet 12-4；The built-in sliding sleeve 12-2 is arranged on
At the entrance 12-3.Water conservancy diversion main body 12-1 is 45 ° -90 ° with the angle of horizontal plane.
Embodiment 7,
As described in Example 1 a kind of electric furnace flue gas waste heat vaporize entirely, heat accumulating type recovery system, its difference is, described
Intermittent high-temperature flue gas regenerative apparatus 14, including accumulation of heat main body 14-1, smoke inlet 14-2 and exhanst gas outlet 14-3, the accumulation of heat
Main body 14-1 is connected with high-temperature flue gas outlet 14-4 of combustion settling chamber by smoke inlet 14-2, accumulation of heat main body 14-1
Including housing 14-5, bracing frame 14-7 is from bottom to top disposed with inside the housing 14-5, supports grate plate 14-8, storage
Hot body 14-9 and top soot blower 14-10；The heat storage 14-9 includes the passage 14-6 of a plurality of confession flue gas water conservancy diversion.The storage
Hot body 14-9 is the heat storage of resistance to material.The diameter range of the passage 14-6 is 30-150mm.
Embodiment 8,
As described in Example 7 a kind of electric furnace flue gas waste heat vaporize entirely, heat accumulating type recovery system, its difference is, described
Heat storage 14-9 is metal heat storage.Cooling duct 14-11, the cooling duct 14- is provided with support frame as described above 14-7
11 are connected with the drum 15.
Embodiment 9,
A kind of method of work of system as described in embodiment 1-8 is as follows including step：
1) when electric furnace charging：
Turn on exhaust gases passes 1, make the electric furnace body top flue gas dust-removal cloth-bag 4-1, wind be entered along dust excluding hood 10
Machine 4-2 and chimney 5；
Exhaust gases passes 23 are made to close or partially ON；Meanwhile, adjustment blower fan 4-2 suction air volume and the exhaust gases passes 1 and
The total blast volume of both exhaust gases passes 23 matches；
2) when electric furnace charging finish start smelt when：
Close exhaust gases passes 1；
Turn on exhaust gases passes 23, make the flue gas inside the electric furnace body 1 dust-removal cloth-bag be entered along exhaust gases passes 23
4-1, blower fan 4-2 and chimney 5；Meanwhile, the air quantity for adjusting blower fan 4-2 suction air volume with the exhaust gases passes 23 matches.
Embodiment 10,
The method of work of system as described in Example 9, its difference are that the system also includes electric furnace smelting status monitoring
Device 6 and air quantity adjust PLC 7；The top flue gas of electric furnace body is connected with the deduster 4 by exhaust gases passes 1, in institute
State and on exhaust gases passes 1, be provided with control valve 1；
The inside smoke of electric furnace body 1 is connected with the deduster 4 by the 4th hole 16 of electric furnace body, exhaust gases passes 23,
Control valve 29 is provided with the exhaust gases passes two；
The control valve 1, control valve 29, electric furnace smelting state monitoring apparatus 6, blower fan 4-2 are adjusted with air quantity respectively
PLC 7 is connected.
By said apparatus, the air quantity adjusts PLC 7 according to the data of electric furnace smelting state monitoring apparatus 6 judge
The working condition of electric furnace body, and then control control valve 1, control valve 29 and blower fan 4-2, to realize the step described in embodiment 9
Suddenly.
Claims (9)
1. a kind of electric furnace flue gas waste heat vaporize entirely, heat accumulating type recovery system, including electric furnace body, exhaust gases passes one, exhaust gases passes
2nd, deduster, chimney；The top flue gas of the electric furnace body is connected with the deduster by exhaust gases passes one；The electric furnace
The inside smoke of body of heater is connected with the deduster by the 4th hole of electric furnace body, exhaust gases passes two；The exhaust gases passes two are wrapped
Include guiding device, combustion settling chamber, heat convection evaporimeter and the economizer being sequentially connected, it is characterised in that in the burning
It is connected with intermittent high-temperature flue gas regenerative apparatus and heat convection superheater between expansion chamber and heat convection evaporimeter in turn；?
The outside of the electric furnace body, guiding device, combustion settling chamber, heat convection superheater, heat convection evaporimeter and economizer
Electric furnace body cooling coil, guiding device cooling coil, combustion settling chamber cooling coil, heat convection mistake are correspondingly arranged on respectively
Hot device cooling coil, heat convection evaporimeter cooling coil and economizer cooling coil；The exhaust gases passes two also include drum,
The drum is arranged with the cooling of electric furnace body cooling coil, guiding device cooling coil and combustion settling chamber respectively by circulation line
Pipe is connected；The drum is connected with the heat convection evaporimeter cooling coil also by circulation line；The heat convection mistake
The arrival end of hot device cooling coil is connected with the drum.
2. a kind of electric furnace flue gas waste heat according to claim 1 vaporize entirely, heat accumulating type recovery system, it is characterised in that vapour
Arrange on bag circulation line connected with electric furnace body cooling coil, guiding device cooling coil and combustion settling chamber cooling coil
There is forced circulation pump；
The exhaust gases passes two also include boiler feed pump, oxygen-eliminating device and boiler water-feeding device, the economizer cooling coil
Arrival end is connected with boiler feed pump, oxygen-eliminating device and boiler water-feeding device successively, the port of export of the economizer cooling coil with
The drum is connected.
3. a kind of electric furnace flue gas waste heat according to claim 1 vaporize entirely, heat accumulating type recovery system, it is characterised in that
The outlet of the economizer is additionally provided with heat exchanger；
The exhaust gases passes one include the dust excluding hood being sequentially connected and the first pipeline；The deduster includes connected dust-removal cloth-bag
And blower fan, the dust-removal cloth-bag is for folding circular filter cloth bag.
4. a kind of electric furnace flue gas waste heat according to claim 1 vaporize entirely, heat accumulating type recovery system, it is characterised in that institute
State guiding device, the water conservancy diversion main body including straight section shape and built-in sliding sleeve, be provided with the upper end side wall of the water conservancy diversion main body into
Mouthful, the lower end of the water conservancy diversion main body is provided with outlet；The built-in sliding sleeve is arranged on the porch.
5. a kind of electric furnace flue gas waste heat according to claim 4 vaporize entirely, heat accumulating type recovery system, it is characterised in that institute
The angle for water conservancy diversion main body being stated with horizontal plane is 45 ° -90 °.
6. a kind of electric furnace flue gas waste heat according to claim 1 vaporize entirely, heat accumulating type recovery system, it is characterised in that institute
Intermittent high-temperature flue gas regenerative apparatus is stated, including accumulation of heat main body, smoke inlet and exhanst gas outlet, the accumulation of heat main body passes through flue gas
Entrance is connected with the high-temperature flue gas outlet of combustion settling chamber, the accumulation of heat main body include housing, the enclosure interior by under
And on be disposed with bracing frame, support grate plate, heat storage and top soot blower；The heat storage includes a plurality of confession flue gas
The passage of water conservancy diversion.
7. a kind of electric furnace flue gas waste heat according to claim 6 vaporize entirely, heat accumulating type recovery system, it is characterised in that institute
Heat storage is stated for the heat storage of resistance to material or metal heat storage；The diameter range of the passage is 30-150mm.
8. a kind of electric furnace flue gas waste heat according to claim 6 vaporize entirely, heat accumulating type recovery system, it is characterised in that
Cooling duct is provided with support frame as described above, the cooling duct is connected with the drum.
9. a kind of method of work of system as described in claim 1-8 any one, it is characterised in that as follows including step：
1) when electric furnace charging：
One conducting of exhaust gases passes is made, and makes the electric furnace body top flue gas dust-removal cloth-bag, blower fan and chimney be entered along dust excluding hood；
Exhaust gases passes two are made to close or partially ON；Meanwhile, adjust fan induced draught amount and the exhaust gases passes one and exhaust gases passes
Total blast volume both two matches；
2) when electric furnace charging finish start smelt when：
Make one closing of exhaust gases passes；
Make two conducting of exhaust gases passes, make flue gas inside the electric furnace body along exhaust gases passes two enter dust-removal cloth-bag, blower fan and
Chimney；Meanwhile, the air quantity for adjusting fan induced draught amount with the exhaust gases passes two matches.
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| CN104344732A (en) * | 2013-08-09 | 2015-02-11 | 无锡市东优环保科技有限公司 | Semi-closed electric furnace flue gas multi-stage organic Rankine cycle waste heat power generation method |
| CN104344731A (en) * | 2013-08-09 | 2015-02-11 | 无锡市东优环保科技有限公司 | Flue gas waste heat power generation method for electric furnace with heat storage temperature equalizer |
| CN103940248B (en) * | 2014-04-10 | 2016-04-20 | 上海宝钢节能环保技术有限公司 | A kind of heat accumulating type electric boiler flue gas waste heat recovery system |
| CN104061793B (en) * | 2014-04-30 | 2016-06-15 | 上海宝钢节能环保技术有限公司 | A kind of electric furnace flue gas temperature section waste heat recovery system step by step and method entirely |
| CN104154764B (en) * | 2014-08-11 | 2016-06-29 | 中冶赛迪工程技术股份有限公司 | A kind of method for Electric purification stove flue gas two English and dust granules and purifier thereof |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN204730673U (en) * | 2015-05-18 | 2015-10-28 | 山东耀华能源投资管理有限公司 | A kind of electric furnace flue gas waste heat is vaporized entirely, heat accumulating type recovery system |
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