CN106839790A - A kind of electric converter gas afterheat generating system - Google Patents
A kind of electric converter gas afterheat generating system Download PDFInfo
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- CN106839790A CN106839790A CN201710069521.6A CN201710069521A CN106839790A CN 106839790 A CN106839790 A CN 106839790A CN 201710069521 A CN201710069521 A CN 201710069521A CN 106839790 A CN106839790 A CN 106839790A
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- Prior art keywords
- gasification cooling
- flue
- cooling flue
- low pressure
- high pressure
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Classifications
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- 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
- F27D17/004—Systems for reclaiming waste heat
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- 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
-
- 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
- F27D17/004—Systems for reclaiming waste heat
- F27D2017/006—Systems for reclaiming waste heat using a boiler
-
- 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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- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses a kind of electric converter gas afterheat generating system, the first gasification cooling flue that exhanst gas outlet including the watercooling elbow from above electric converter is sequentially communicated along flow of flue gas direction, second gasification cooling flue, combustion settling chamber, 3rd gasification cooling flue and waste heat boiler, evaporator in waste heat boiler, economizer is sequentially arranged along flow of flue gas direction, the smoke waste heat utilization system is divided into low pressure vapor system according to operating pressure difference again, high pressure boiler circuit, wherein, the low pressure vapor system is used to cool down the fire door of the first gasification cooling flue and combustion settling chamber, supplied by low pressure drum oxygen-eliminating device and fed water, so as to produce low-pressure steam；And the high pressure boiler circuit is used to cool down the second gasification cooling flue, the bell of combustion settling chamber, the 3rd gasification cooling flue, waste heat boiler, water is supplied to by high pressure drum, so as to the steam for producing high steam, high pressure drum output drives electrical power generators by driving steam turbine after storage heater treatment.
Description
Technical field
The present invention relates to the field of energy-saving technology of steel industry, specifically, it is related to a kind of electric converter gas cogeneration
System.
Background technology
Electric converter is the converter for gradually growing up in recent years and progressively promoting the use of, and electric converter is both different from oxygen top
Blow converter, is the technology combination of oxygen top-blown converter and direct current electric arc furnace also different from direct current electric arc furnace.In electric converter smelting
During, substantial amounts of high-temperature flue gas can be produced (maximum temperature is even up to more than 1600 DEG C).These high-temperature flue gas not only band
Substantial amounts of heat energy is walked, but also the operation of downstream cleaner can have been influenceed, and then brought problem of environmental pollution.
In recent years, as iron and steel enterprise is to the pay attention to day by day of energy-saving and emission-reduction, how will be aobvious in steel making working procedure high-temperature flue gas
It is hot fully to reclaim, become " useless " into precious, have become steel-making enterprise increasingly concern.Because electric converter was risen in recent years
Steelmaking equipment, has not yet been formed a set of perfect electric converter high-temperature flue gas UTILIZATION OF VESIDUAL HEAT IN scheme, the recovery side used in engineering at present
Formula is generally more extensive, and heat-exchange system is designed not according to the height of flue gas taste, cannot also make full use of fume afterheat.
Therefore, a kind of scheme that can make full use of electric converter gas residual heat resources is built, it is fully reclaimed electric converter gas
Waste heat and rationally utilized, more considerable economic well-being of workers and staff can be necessarily produced, with important practical significance.
The content of the invention
According to an aspect of the invention, there is provided a kind of electric converter gas afterheat generating system, including from electric converter
The first gasification cooling flue, the second Vaporizing cooling cigarette that the exhanst gas outlet of the watercooling elbow of side is sequentially communicated along flow of flue gas direction
Road, combustion settling chamber, the 3rd gasification cooling flue and waste heat boiler, the evaporator, economizer in waste heat boiler are along flue gas stream
Dynamic direction sequentially arranges, the electric converter gas afterheat generating system again according to operating pressure difference be divided into low pressure vapor system,
High pressure boiler circuit, wherein, the low pressure vapor system is used to cool down the fire door of the first gasification cooling flue and combustion settling chamber,
By low pressure drum-oxygen-eliminating device supply feedwater, so as to produce low-pressure steam；And the high pressure boiler circuit is used to cool down the second vaporization
Cooling stack, the bell of combustion settling chamber, the 3rd gasification cooling flue, waste heat boiler, water is supplied to by high pressure drum, so as to produce
Raw high steam, the high pressure drum is sequentially communicated by jet chimney with storage heater, steam turbine, from the storage heater out
Stabilization steam enters the steam turbine, so as to drive the steam turbine to drive electrical power generators.
Preferably, the low pressure vapor system includes low pressure drum-oxygen-eliminating device, low pressure recycle pump, the low pressure drum-remove
Oxygen device is connected by the first down-comer with low pressure recycle pump, and the outlet pipeline of the low pressure recycle pump branches into two-way, all the way with
The water inlet connection of the first gasification cooling flue, another road connects with the apparatus for vapour-cooling water inlet of the fire door of combustion settling chamber
It is logical, the venthole of first gasification cooling flue, the venthole of the apparatus for vapour-cooling of the fire door of the combustion settling chamber with
The rising mouth of pipe connection of the low pressure drum-oxygen-eliminating device, and the high pressure boiler circuit includes feed pump, high pressure drum, height
Pressure circulating pump, the low pressure drum-oxygen-eliminating device is connected by the first outlet pipe with feed pump, the outlet pipeline of the feed pump and
The water inlet connection of the economizer in the waste heat boiler, the delivery port of the economizer connects with the water inlet of the high pressure drum
Lead to, and the high pressure drum is connected by the second down-comer with the high-pressure circulation pump, the outlet of the high-pressure circulation pump
Road is divided into multiple branch roads, water inlet respectively with second gasification cooling flue, the water inlet of the 3rd gasification cooling flue
Mouthful and combustion settling chamber bell apparatus for vapour-cooling water inlet connection, second gasification cooling flue goes out vapour
The venthole of the apparatus for vapour-cooling of the bell of mouth, the venthole of the 3rd gasification cooling flue and combustion settling chamber leads to
Piping is connected with the rising mouth of pipe of the high pressure drum, forms enclosed forced circulation loop, and the high pressure drum passes through the 3rd
Down-comer is connected with the water inlet of the evaporator in the waste heat boiler, the venthole of the evaporator and the high pressure drum
Rise mouth of pipe connection, form a natural convection loop.
Preferably, the outlet vapor pipeline of the storage heater also separates the auxiliary of branch road all the way and low pressure drum-oxygen-eliminating device
Heating vapor interface connection.
Preferably, in waste heat boiler, it is additionally provided with using the solidifying of counter-flow arrangement in the fume side downstream of the economizer
Preheater is born water, for being preheated to the condensate that steam turbine comes, blow-off line and condenser, the condensate of the steam turbine
The water inlet of condensation water preheater, low pressure drum-oxygen-eliminating device in pump, waste heat boiler is sequentially connected along Water flow-path is condensed.
Preferably, convection pass is provided between the 3rd gasification cooling flue and waste heat boiler, is set in the convection pass
It is equipped with using the convection recuperator of counter-flow arrangement, a branch road and the convection current is separated on the outlet conduit of the high-pressure circulation pump
The water inlet of the convection recuperator in flue is connected, and the venthole of the convection recuperator passes through pipeline and the high pressure drum
Rise the mouth of pipe to be connected.
Preferably, first gasification cooling flue is using portable flue, second gasification cooling flue and the 3rd
Gasification cooling flue uses fixed flue, the gas approach end of first gasification cooling flue and the cigarette of the watercooling elbow
The gas port of export is connected and has default gap, the smoke outlet of first gasification cooling flue and second Vaporizing cooling
The gas approach end connection of flue；Draw-gear is installed on first gasification cooling flue, the draw-gear can drive
One gasification cooling flue is moved horizontally, and the smoke outlet of the first gasification cooling flue be then attached to it is described second vaporization it is cold
But moved horizontally on the gas approach end of flue, so as to control the gap between the first gasification cooling flue and watercooling elbow, entered
And adjust the combustion air amount for entering the first gasification cooling flue.
Preferably, the evaporator uses counter-flow arrangement, and the water inlet of the evaporator is located at the low-temperature flue gas of evaporator
End, the venthole of the evaporator is located at the high-temperature flue gas end of evaporator.
Brief description of the drawings
Embodiment is described by with reference to accompanying drawings below, features described above of the invention and technological merit will become
More understand and be readily appreciated that.
Fig. 1 is the schematic diagram of the electric converter gas afterheat generating system for representing the embodiment of the present invention.
Wherein, electric converter 1, watercooling elbow 2, the first gasification cooling flue 3, the second gasification cooling flue 4, combustion settling chamber
5th, the 3rd gasification cooling flue 6, convection pass 7, waste heat boiler 8 (include evaporator 81, economizer 82, condense water preheater
83), low pressure drum-oxygen-eliminating device 9, high pressure drum 10, low pressure recycle pump 11, feed pump 12, high-pressure circulation pump 13, storage heater 14,
Steam turbine 15, generator 16, condenser 17, condensate pump 18, the first down-comer 91, the first outlet pipe 92, the second down-comer
101st, the 3rd down-comer 102.
Specific embodiment
The embodiment of electric converter gas afterheat generating system of the present invention described below with reference to the accompanying drawings.This area
Those of ordinary skill will recognize, without departing from the spirit and scope of the present invention, can be with a variety of
Mode or its combination are modified to described embodiment.Therefore, accompanying drawing and description are inherently illustrative, rather than
For limiting scope of the claims.Additionally, in this manual, accompanying drawing draws not in scale, and identical accompanying drawing
Mark represents identical part.It should be noted that it should be noted that high pressure of the present invention, low pressure are to distinguish vapour
The pressure rating of water system and carry out differentiation name (such as：High steam, the pressure of low-pressure steam separately design for 2.45MPa,
0.5MPa), not absolute high pressure (such as 9.81MPa), absolute low pressure (such as 0.8MPa), also, following carbonated drink flow direction are pressed
The flowing of direction shown in arrow in figure.
The invention discloses a kind of electric converter gas afterheat generating system, including from the watercooling elbow 2 of the top of electric converter 1
The first gasification cooling flue 3, the second gasification cooling flue 4, burning sedimentation that exhanst gas outlet is sequentially communicated along flow of flue gas direction
Room 5, the 3rd gasification cooling flue 6 and waste heat boiler 8, the flue gas discharged through waste heat boiler 8 enter downstream dedusting as shown by arrow A
Facility, emits after further dedusting.Evaporator 81, economizer 82 in waste heat boiler 8 is suitable along flow of flue gas direction
Secondary arrangement, power generation system with residual heat of fume is divided into low pressure vapor system, high pressure boiler circuit according to operating pressure difference again, wherein,
The low pressure vapor system is used to cool down the fire door 51 of the first gasification cooling flue 3 and combustion settling chamber 5, by low pressure drum-remove
The supply feedwater of oxygen device 9, so as to produce low-pressure steam, the low pressure drum-oxygen-eliminating device is the combination of low pressure drum and oxygen-eliminating device, deoxygenation
Device is installed on the top of low pressure drum, and low pressure drum can double as deoxygenation water tank.And the high pressure boiler circuit is used to cool down the
Two gasification cooling flues 4, the bell 52 of combustion settling chamber 5, the 3rd gasification cooling flue 6, waste heat boiler 8, by high pressure drum 10
(also known as drum, is most important pressure parts in natural circulation boiler) supply feedwater, so that high steam is produced, the high pressure
The steam of the output of drum 10 completes UTILIZATION OF VESIDUAL HEAT IN by coordinating with steam turbine 15, generator 16 after the treatment of storage heater 14.Specifically
Say, the venthole of the high pressure drum 10 is connected with the air intake of storage heater 14, the venthole of storage heater 14 is supplied to steam turbine 15
Steam is answered, so as to drive the steam turbine to drive generator 16 to generate electricity.Especially, storage heater 14 also separates a bye-pass and low pressure
The auxiliary heating vapor interface of drum-oxygen-eliminating device 9 is connected.
Low pressure vapor system, high pressure boiler circuit the following detailed description of electric converter gas afterheat generating system.To ensure
The quick cooling of the first gasification cooling flue in temperature end, and in view of the activity of combustion settling chamber fire door, the first vapour
Change cooling stack and the cooling of combustion settling chamber fire door uses low pressure vapor system.As shown in figure 1, the low pressure vapor system includes
Low pressure drum-oxygen-eliminating device 9, low pressure recycle pump 11, the low pressure drum-oxygen-eliminating device 9 pass through the first down-comer 91 and low pressure recycle
Pump 11 is connected, the outlet pipeline of the low pressure recycle pump 11 branches into two-way, is entered with first gasification cooling flue 3 all the way
The mouth of a river connects, and another road connects with the apparatus for vapour-cooling water inlet of the fire door 51 of the combustion settling chamber 5, first vaporization
The venthole of cooling stack 3, the venthole of the apparatus for vapour-cooling of the fire door 51 of the combustion settling chamber 5 and the low pressure cooker
The rising mouth of pipe connection of cylinder-oxygen-eliminating device 9.
High pressure boiler circuit is used for other heat-exchange systems, the lower water fed water by the of a relatively high high pressure drum 10 of pressure
To supply, so as to more economical mode Mist heat recovering.The high pressure boiler circuit includes feed pump 12, high pressure drum
10, the low pressure drum-oxygen-eliminating device 9 is connected by the first outlet pipe 92 with feed pump 12, the outlet pipeline of the feed pump 12
Water inlet with the economizer 82 in the waste heat boiler 8 is connected, the delivery port of the economizer 82 and the high pressure drum 10
Water inlet connection.
The high pressure drum 10 is connected by the second down-comer 101 with the high-pressure circulation pump 13, the high-pressure circulation pump
13 outlet conduit is divided into multiple branch roads, water inlet respectively with second gasification cooling flue 4, the 3rd Vaporizing cooling
The water inlet connection of the apparatus for vapour-cooling of the water inlet of flue 6 and the bell 52 of combustion settling chamber 5, second vaporization is cold
But the vaporization of the bell 52 of the venthole of flue 4, the venthole of the 3rd gasification cooling flue 6 and combustion settling chamber 5 is cold
But the venthole of device is connected by pipeline with the rising mouth of pipe of the high pressure drum 10, forms enclosed forced circulation loop.
The water inlet phase that the high pressure drum 10 passes through the evaporator 81 in the 3rd down-comer 102 and the waste heat boiler 8
Even, the venthole of the evaporator 81 is connected with the rising mouth of pipe of the high pressure drum 10, forms a natural convection loop.
Electric converter gas afterheat generating system reasonable Arrangement gasification cooling flue, waste heat boiler, high pressure drum and the low pressure
Drum-oxygen-eliminating device, forms high pressure boiler circuit and low pressure vapor system, can fully absorb fume afterheat.
In one alternate embodiment, it is additionally provided with using the condensate of counter-flow arrangement in the fume side downstream of economizer 82
Preheater 83, for being preheated to the condensate that steam turbine comes, blow-off line and condenser 17, the condensation of the steam turbine 15
The water inlet for condensing water preheater 83, low pressure drum-oxygen-eliminating device 9 in water pump 18, waste heat boiler is along condensation Water flow-path successively phase
Even.Especially, condense water preheater 83 and use counter-flow arrangement, that is to say, that the water inlet for condensing water preheater is located at waste heat pot
The low-temperature flue gas end of the condensation water preheater 83 of stove 8, the venthole of the condensation water preheater of the waste heat boiler is located at waste heat pot
The high-temperature flue gas end of the condensation water preheater of stove.
In one alternate embodiment, convection pass 7 is provided between the 3rd gasification cooling flue and waste heat boiler, it is described
The convection recuperator of counter-flow arrangement is provided with convection pass 7, one is separated on the outlet conduit of the high-pressure circulation pump 13
Individual branch road is connected with the water inlet of the convection recuperator in the convection pass, and the convection recuperator in the convection pass goes out
Steam ports is connected by pipeline with the rising mouth of pipe of the high pressure drum 10.Especially, convection recuperator uses counter-flow arrangement, also
It is to say, the water inlet of convection recuperator is located at the low-temperature flue gas end of the convection recuperator in convection pass, in the convection pass
Convection recuperator venthole be located at convection pass in convection recuperator high-temperature flue gas end.
In one alternate embodiment, the first gasification cooling flue 3, the second gasification cooling flue 4, the 3rd Vaporizing cooling cigarette
Road 6 uses down current arrangement mode, and specifically, the water inlet of the first gasification cooling flue 3 is located at the first gasification cooling flue 3
High-temperature flue gas end, the venthole of the first gasification cooling flue 3 is located at the low-temperature flue gas end of the first gasification cooling flue 3.Second
The water inlet of gasification cooling flue 4 is located at the high-temperature flue gas end of the second gasification cooling flue 4, second gasification cooling flue 4
Venthole be located at the second gasification cooling flue 4 low-temperature flue gas end.The water inlet of the 3rd gasification cooling flue 6 is located at the
The high-temperature flue gas end of three gasification cooling flues 6, the venthole of the 3rd gasification cooling flue 6 is located at the 3rd gasification cooling flue
6 low-temperature flue gas end.
In one alternate embodiment, the evaporator 81 uses counter-flow arrangement, and specifically, the evaporator 81 enters
The mouth of a river is located at the low-temperature flue gas end of evaporator, and the venthole of the evaporator 81 is located at the high-temperature flue gas end of evaporator.
In one alternate embodiment, the economizer 82 is also adopted by counter-flow arrangement, the water inlet position of the economizer 82
In the low-temperature flue gas end of economizer 82, the venthole of the economizer 82 is located at the high-temperature flue gas end of economizer.
In one alternate embodiment, first gasification cooling flue 3 is using portable flue, and second vaporization is cold
But flue 4 and the 3rd gasification cooling flue 6 use fixed flue, the gas approach end of first gasification cooling flue 4 with
The smoke outlet of the watercooling elbow 2 is connected and has default gap, the smoke outlet of first gasification cooling flue 3
Gas approach end with second gasification cooling flue 4 connects.Traction dress is installed on first gasification cooling flue 3
Put, the draw-gear can drive the first gasification cooling flue 3 to be moved horizontally, and the flue gas of the first gasification cooling flue 3 goes out
Mouth end is then attached on the gas approach end of second gasification cooling flue 4 and moves horizontally, so as to control the first Vaporizing cooling cigarette
Gap between road 3 and watercooling elbow 2, and then adjust the combustion air amount for entering the first gasification cooling flue 3.
In sum, electric converter gas afterheat generating system of the invention has the advantages that：
(1) the high-temperature flue gas waste heat to electric converter is fully reclaimed, and produces steam to be used to generate electricity, cold by vaporizing first
But mode reclaims the high-temperature flue gas used heat of electric converter, then further absorbs fume afterheat by convection pass and reduces
Flue-gas temperature, to improve waste heat boiler service condition, the fume waste heat of electric converter is reclaimed finally by the mode of waste heat boiler,
Flue-gas temperature is reduced to uniform temperature, waste heat has not only been reclaimed, can also be provided for the safe operation of the dust removal installation in downstream
Condition.
(2) height sampled according to flue gas carries out the optimal design-aside of heating surface, in high pressure boiler circuit and low-pressure steam water system
It is comprehensive in the design of system, and gasification cooling flue, waste heat boiler and low pressure drum-oxygen-eliminating device, the connect setting of high pressure drum
The security and heat-economy of consideration system, being capable of more rational Mist heat recovering.
(3) afterbody heating surface is typically arranged to economizer by traditional waste heat boiler, and the present invention is in waste heat boiler
Afterbody is additionally arranged condensation water preheater, pre- for being carried out to the condensate that steam turbine comes by the fume afterheat after economizer cooling
Heat, not only further absorbs fume afterheat, improves the heat-economy of afterheat generating system, and improves low pressure drum-remove
Oxygen device inflow temperature, reduces the heat transfer temperature difference of whole condensate heat-exchange system, reduces its heat exchange exergy destruction, improves the energy
Effective rate of utilization.Additionally, the setting for condensing water preheater can also be lowered into the flue-gas temperature of downstream dust removal installation, it is ensured that dedusting
The safe operation of facility, and improve its running environment, extend its service life.
(4) the first gasification cooling flue gas approach and water-cooled are adjusted by moving horizontally for the first gasification cooling flue
Gap between elbow exhanst gas outlet, with the air capacity for controlling to be sucked from the gap, and then controls the burning of electric converter gas, should
Method with routinely use realized by sliding sleeve furnace gas combustion air amount regulation method compared with, with more preferable operability
And stability, system can more bear severe service condition, it is possible to decrease conventional method causes electric converter blowing out due to sliding sleeve failure
Frequency, system service life is longer.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for those skilled in the art
For member, the present invention can have various modifications and variations.All any modifications within the spirit and principles in the present invention, made,
Equivalent, improvement etc., should be included within the scope of the present invention.
Claims (7)
1. a kind of exhanst gas outlet edge of electric converter gas afterheat generating system, including the watercooling elbow (2) from above electric converter (1)
The first gasification cooling flue (3) that flow of flue gas direction is sequentially communicated, the second gasification cooling flue (4), combustion settling chamber (5),
3rd gasification cooling flue (6) and waste heat boiler (8), the evaporator (81), economizer (82) in waste heat boiler (8) are along flue gas
Flow direction is sequentially arranged, it is characterised in that
The electric converter gas afterheat generating system is divided into low pressure vapor system, high pressure carbonated drink system according to operating pressure difference again
System, wherein,
The low pressure vapor system is used to cool down the fire door (51) of the first gasification cooling flue (3) and combustion settling chamber (5), by low
Pressure drum-oxygen-eliminating device (9) supply feedwater, so as to produce low-pressure steam；And
The high pressure boiler circuit is used to cool down the second gasification cooling flue (4), bell (52), the 3rd of combustion settling chamber (5)
Gasification cooling flue (6), waste heat boiler (8), are supplied by high pressure drum (10) and fed water, so that high steam is produced,
The high pressure drum (10) is sequentially communicated by jet chimney with storage heater (14), steam turbine (15), from the storage heater
Stable steam out enters the steam turbine, so as to drive the steam turbine to drive generator (16) to generate electricity.
2. electric converter gas afterheat generating system according to claim 1, it is characterised in that
The low pressure vapor system includes low pressure drum-oxygen-eliminating device (9), low pressure recycle pump (11), the low pressure drum-oxygen-eliminating device
(9) it is connected with low pressure recycle pump (11) by the first down-comer (91), the outlet pipeline of the low pressure recycle pump (11) is branched into
Two-way, all the way the water inlet with the first gasification cooling flue (3) connect, the fire door (51) of another road and combustion settling chamber (5)
Apparatus for vapour-cooling water inlet is connected, the venthole of first gasification cooling flue (3), the stove of the combustion settling chamber (5)
The venthole of the apparatus for vapour-cooling of door (51) is connected with the rising mouth of pipe of the low pressure drum-oxygen-eliminating device (9), and
The high pressure boiler circuit include feed pump (12), high pressure drum (10), high-pressure circulation pump (13), the low pressure drum-
Oxygen-eliminating device (9) is connected by the first outlet pipe (92) with feed pump (12), and the outlet pipeline of the feed pump (12) is remaining with described
The water inlet connection of the economizer (82) in heat boiler (8), the delivery port of the economizer (82) and the high pressure drum (10)
Water inlet connection, and
The high pressure drum (10) is connected by the second down-comer (101) with the high-pressure circulation pump (13), the cycle of higher pressure
The outlet conduit of pump (13) is divided into multiple branch roads, water inlet respectively with second gasification cooling flue (4), the 3rd vapour
Change the water inlet connection of the apparatus for vapour-cooling of the water inlet of cooling stack (6) and the bell (52) of combustion settling chamber (5), institute
State venthole, the venthole and combustion settling chamber of the 3rd gasification cooling flue (6) of the second gasification cooling flue (4)
(5) venthole of the apparatus for vapour-cooling of bell (52) is connected by pipeline with the rising mouth of pipe of the high pressure drum (10)
It is logical, enclosed forced circulation loop is formed,
The water inlet that the high pressure drum (10) passes through the evaporator (81) in the 3rd down-comer (102) and the waste heat boiler (8)
Mouth is connected, and the venthole of the evaporator (81) is connected with the rising mouth of pipe of the high pressure drum (10), forms one and follows naturally
Loop back path.
3. electric converter gas afterheat generating system according to claim 1, it is characterised in that storage heater (14) go out
Mouth steam pipework also separates branch road all the way and is connected with the auxiliary heating vapor interface of low pressure drum-oxygen-eliminating device (9).
4. electric converter gas afterheat generating system according to claim 1, it is characterised in that in waste heat boiler, in institute
The fume side downstream for stating economizer (82) is additionally provided with using the condensation water preheater (83) of counter-flow arrangement, for coming to steam turbine
Condensate preheated, it is solidifying in the blow-off line of the steam turbine and condenser (17), condensate pump (18), waste heat boiler
The water inlet for bearing water preheater (83), low pressure drum-oxygen-eliminating device (9) is sequentially connected along Water flow-path is condensed.
5. electric converter gas afterheat generating system according to claim 1, it is characterised in that the 3rd gasification cooling flue and
Convection pass is provided between waste heat boiler, the convection recuperator of counter-flow arrangement is provided with the convection pass, it is described
Separate a branch road on the outlet conduit of high-pressure circulation pump to be connected with the water inlet of the convection recuperator in the convection pass, institute
The venthole for stating convection recuperator is connected by pipeline with the rising mouth of pipe of the high pressure drum.
6. electric converter gas afterheat generating system according to claim 1, it is characterised in that the first Vaporizing cooling cigarette
Using portable flue, second gasification cooling flue and the 3rd gasification cooling flue use fixed flue in road, and described the
The gas approach end of one gasification cooling flue connects with the smoke outlet of the watercooling elbow and has default gap,
The smoke outlet of first gasification cooling flue is connected with the gas approach end of second gasification cooling flue；
Draw-gear is installed on first gasification cooling flue, the draw-gear can drive the first gasification cooling flue to carry out
Move horizontally, and the smoke outlet of the first gasification cooling flue is then attached to the gas approach end of second gasification cooling flue
On move horizontally, so as to control the gap between the first gasification cooling flue and watercooling elbow, and then adjust and enter first and vaporize
The combustion air amount of cooling stack.
7. electric converter gas afterheat generating system according to claim 1, it is characterised in that
The evaporator uses counter-flow arrangement, and the water inlet of the evaporator is located at the low-temperature flue gas end of evaporator, the evaporation
The venthole of device is located at the high-temperature flue gas end of evaporator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710069521.6A CN106839790B (en) | 2017-02-08 | 2017-02-08 | Electricity converter flue gas waste heat power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710069521.6A CN106839790B (en) | 2017-02-08 | 2017-02-08 | Electricity converter flue gas waste heat power generation system |
Publications (2)
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| CN108253804A (en) * | 2018-01-12 | 2018-07-06 | 西安石大能源股份有限公司 | A kind of boiler circuit using low hood device recycling calcium silicon furnace waste heat |
| CN108645226A (en) * | 2018-05-24 | 2018-10-12 | 北京京诚科林环保科技有限公司 | Electric furnace flue gas double-working-medium heat exchange composite circulation superheated steam system |
| CN109269315A (en) * | 2018-11-12 | 2019-01-25 | 中冶赛迪技术研究中心有限公司 | Make steel waste heat recycling system |
| CN109668133A (en) * | 2019-01-24 | 2019-04-23 | 双良节能系统股份有限公司 | A kind of Heating Hot Water Boiler flue gas waste heat recovery system and its recovery method |
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| CN108645226B (en) * | 2018-05-24 | 2023-12-29 | 北京京诚科林环保科技有限公司 | Electric stove flue gas double working medium heat exchange composite cycle superheated steam system |
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| CN109668133A (en) * | 2019-01-24 | 2019-04-23 | 双良节能系统股份有限公司 | A kind of Heating Hot Water Boiler flue gas waste heat recovery system and its recovery method |
| CN109668133B (en) * | 2019-01-24 | 2024-03-12 | 江苏双良冷却系统有限公司 | Flue gas waste heat recovery system and method for heating hot water boiler |
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