CN206479051U - Electric converter gas afterheat utilizing system based on many die pressing types - Google Patents
Electric converter gas afterheat utilizing system based on many die pressing types Download PDFInfo
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- CN206479051U CN206479051U CN201720118498.0U CN201720118498U CN206479051U CN 206479051 U CN206479051 U CN 206479051U CN 201720118498 U CN201720118498 U CN 201720118498U CN 206479051 U CN206479051 U CN 206479051U
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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
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Abstract
The utility model discloses a kind of electric converter gas afterheat utilizing system based on many die pressing types, the first gasification cooling flue being sequentially communicated including the watercooling elbow exhanst gas outlet above electric converter along flow of flue gas direction, second gasification cooling flue, combustion settling chamber, 3rd gasification cooling flue, waste heat boiler, high pressure evaporator in waste heat boiler, high-pressure economizer, middle pressure evaporator, middle pressure economizer is sequentially arranged along flow of flue gas direction, first gasification cooling flue, the fire door of combustion settling chamber is cooled down with low pressure vapor system, water is supplied to by low pressure drum, produce low-pressure steam；Second gasification cooling flue, combustion settling chamber bell, the 3rd gasification cooling flue, waste heat boiler high pressure section high pressure boiler circuit, water is supplied to by high pressure drum, produces high steam；Waste heat boiler intermediate pressure section presses boiler circuit in, is fed water by middle pressure drum supply, produces middle pressure steam, high pressure, output steam driving steam turbine work after storage heater, superheater of middle pressure drum.
Description
Technical field
The utility model is related to the field of energy-saving technology of steel industry, more particularly to the electric converter gas based on many die pressing types
Afterheat utilizing 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.
During electric converter smelting, can produce substantial amounts of high-temperature flue gas (maximum temperature be even up to 1600 DEG C with
On).These high-temperature flue gas have not only taken away substantial amounts of heat energy, but also can influence the operation of downstream cleaner, and then bring
Problem of environmental pollution.In recent years, with pay attention to day by day of the iron and steel enterprise to energy-saving and emission-reduction, how by steel making working procedure high-temperature flue gas
Sensible heat fully reclaim, become " useless " to be precious, have become steel-making enterprise increasingly concern.
Because electric converter is the steelmaking equipment that rose in recent years, a set of perfect electric converter high-temperature flue gas has not yet been formed at present
The way of recycling used in UTILIZATION OF VESIDUAL HEAT IN scheme, engineering is generally more extensive, and the height sampled not according to flue gas changes to design
Hot systems, cannot also make full use of fume afterheat.Therefore, building a kind of can make full use of electric converter gas residual heat resources
Scheme, allows it fully to reclaim the waste heat of electric converter gas and rationally be utilized, can necessarily produce more considerable economy
Income, with important practical significance.
Utility model content
The utility model provides a kind of electric converter gas afterheat utilizing system based on many die pressing types, including from electric converter
The first gasification cooling flue that the exhanst gas outlet of the watercooling elbow of top is sequentially communicated along flow of flue gas direction, the second Vaporizing cooling
Flue, combustion settling chamber, the 3rd gasification cooling flue, the convection pass for being built-in with convection recuperator, waste heat boiler, waste heat boiler
In high pressure evaporator, high-pressure economizer, middle pressure evaporator, middle pressure economizer sequentially arranged along flow of flue gas direction, it is described
Smoke waste heat utilization system is divided into low pressure vapor system, middle pressure boiler circuit, high pressure boiler circuit according to operating pressure difference again,
Wherein, the low pressure vapor system is used for the fire door of the first gasification cooling flue and combustion settling chamber, is supplied to by low pressure drum
Water, so as to produce low-pressure steam；And medium pressure boiler circuit is used for the flue gas heat for absorbing the intermediate pressure section of waste heat boiler, in
Drum supply feedwater is pressed, so as to produce middle pressure steam；The high pressure boiler circuit is used to cool down the second gasification cooling flue, burning
The bell of expansion chamber, the 3rd gasification cooling flue, the high pressure section of waste heat boiler, water is supplied to by high pressure drum, so as to produce height
Steam is pressed, the high pressure drum, the steam of middle pressure drum output are matched somebody with somebody after being handled respectively through storage heater and superheater with steam turbine
Close and complete UTILIZATION OF VESIDUAL HEAT IN.
Preferably, the low pressure vapor system includes low pressure drum, low pressure recycle pump, and the low pressure drum is by under first
Drop pipe is connected with low pressure recycle pump, and the outlet pipeline of the low pressure recycle pump branches into two-way, all the way with the first Vaporizing cooling cigarette
The water inlet connection in road, another road is connected with the apparatus for vapour-cooling water inlet of the fire door of combustion settling chamber, first vaporization
The venthole of cooling stack, the venthole of the apparatus for vapour-cooling of the fire door of the combustion settling chamber are upper with the low pressure drum
Riser mouthful connection, and medium pressure boiler circuit includes middle pressure drum, middle pressure feed pump, and the low pressure drum goes out by first
Water pipe is connected with middle pressure feed pump, and the outlet pipeline of medium pressure feed pump enters with the middle pressure economizer in the waste heat boiler
The mouth of a river is connected, and the delivery port of medium pressure economizer is connected with the water inlet of medium pressure drum, and medium pressure drum is logical
The water inlet that the 3rd down-comer is crossed with the middle pressure evaporator in the waste heat boiler is connected, the venthole of medium pressure evaporator with
The rising mouth of pipe connection of medium pressure drum, forms a natural convection loop；The high pressure boiler circuit include high pressure drum,
High pressure water pump, high-pressure circulation pump, the low pressure drum are connected by the second outlet pipe with high pressure water pump, the high-pressure feed water
The delivery port of pump is connected with the water inlet of the high-pressure economizer in the waste heat boiler, the delivery port of the high-pressure economizer and institute
State the water inlet connection of high pressure drum；The high pressure drum is connected by the 4th down-comer with the high-pressure circulation pump, the height
The outlet conduit of pressure circulating pump is divided into multiple branch roads, water inlet, the 3rd vapour respectively with second gasification cooling flue
Change the water inlet connection of the apparatus for vapour-cooling of the water inlet of cooling stack and the bell of combustion settling chamber, second vaporization
The Vaporizing cooling dress of the bell of the venthole of cooling stack, the venthole of the 3rd gasification cooling flue and combustion settling chamber
The venthole put is connected by pipeline with the rising mouth of pipe of the high pressure drum, forms enclosed forced circulation loop, the height
Pressure drum is connected by the 5th down-comer with the water inlet of the high pressure evaporator in the waste heat boiler, the high pressure evaporator
Venthole is connected with the rising mouth of pipe of the high pressure drum, forms a natural convection loop.
Preferably, the venthole of the high pressure drum is connected with the air intake of the first storage heater, and medium pressure drum goes out
Steam ports is connected with the air intake of the second storage heater；The venthole of first storage heater is with crossing the first superheater in heating flue
Air intake is connected, and the venthole of second storage heater is connected with crossing the air intake of the second superheater in heating flue；Described
The venthole of one superheater is connected with the main steam import of the steam turbine, venthole and the steamer of second superheater
The filling import of machine is connected.
Preferably, low pressure evaporator is set in the afterbody of waste heat boiler, the low pressure drum passes through the second down-comer and institute
The water inlet connection of the low pressure evaporator in waste heat boiler is stated, the venthole of the low pressure evaporator is upper with the low pressure drum
Riser mouthful connection.
Preferably, in waste heat boiler, condensation water preheater is additionally provided with the fume side downstream of the low pressure evaporator,
For being preheated to the condensate that steam turbine comes.
Preferably, a branch road is separated on the outlet conduit of the high-pressure circulation pump to change with the convection current in the convection pass
The water inlet of hot device is connected, and the venthole of the convection recuperator in the convection pass is upper by pipeline and the high pressure drum
Riser mouthful is connected.
Preferably, the blow-off line of the steam turbine is preheated with the condensate in condenser, condensate pump, waste heat boiler
The water inlet of oxygen-eliminating device above device, low pressure drum is sequentially communicated along Water flow-path is condensed.
Brief description of the drawings
By the way that embodiment is described with reference to accompanying drawings below, features described above of the present utility model and technological merit will
Become more fully apparent and be readily appreciated that.
Fig. 1 is the signal for the electric converter gas afterheat utilizing system based on many die pressing types for representing the utility model embodiment
Figure.
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 high pressure evaporator 81, high-pressure economizer 82, middle pressure to steam
Send out device 83, it is middle pressure economizer 84, low pressure evaporator 85, condense water preheater 86), low pressure drum 9, it is middle pressure drum 10, pressure cooker
Cylinder 11, low pressure recycle pump 12, middle pressure feed pump 13, high pressure water pump 14, high-pressure circulation pump 15, the first storage heater 16, second store
Hot device 17, excessively heating flue 18, the first superheater 19, the second superheater 20, steam turbine 21, condenser 22, condensate pump 23, generating
Machine 24, the first down-comer 91, the second outlet pipe 92, the first outlet pipe 93, the second down-comer 94, oxygen-eliminating device 95, the 3rd down-comer
101st, pipeline 102, pipeline 103, the 4th down-comer 111, the 5th down-comer 112, pipeline 113, pipeline 114, pipeline 115, pipeline
116th, pipeline 117, pipeline 118.
Embodiment
The electric converter gas UTILIZATION OF VESIDUAL HEAT IN described in the utility model based on many die pressing types described below with reference to the accompanying drawings
The embodiment of system.One of ordinary skill in the art will recognize, without departing from spirit and scope of the present utility model
In the case of, described embodiment can be modified with a variety of modes or its combination.Therefore, accompanying drawing and description exist
Substantially it is illustrative, is not intended to limit the scope of the claims.In addition, in this manual, accompanying drawing is not pressed
Ratio is drawn, and identical reference represents identical part.It should be noted that high pressure described in the utility model, in
Pressure, low pressure are that the differentiation carried out to distinguish the pressure rating of boiler circuit is named (such as：High steam, middle pressure steam, low pressure
The pressure of steam is separately designed as 3.83MPa, 1.6MPa, 0.5MPa), not absolute high pressure (such as 9.81MPa), definitely middle pressure
(such as 4.9MPa), absolute low pressure (such as 0.8MPa), also, the direction flowing as shown in arrow in figure of following carbonated drink flow direction.
The utility model provides a kind of electric converter gas afterheat utilizing system based on many die pressing types, including along flow of flue gas
The first gasification cooling flue 3 that direction is sequentially communicated, the second gasification cooling flue 4, combustion settling chamber 5, the 3rd Vaporizing cooling cigarette
Road 6 and waste heat boiler 8, wherein, the flue gas of the watercooling elbow 2 of the smoke inlet of the first gasification cooling flue 3 and the electric top of converter 1
Outlet.Flue gas arrow A directions circulation along along Fig. 1 is dynamic.High pressure evaporator 81, high-pressure economizer 82 in waste heat boiler 8, in
Pressure evaporator 83, middle pressure economizer 84 are sequentially arranged along flow of flue gas direction.The smoke waste heat utilization system is again according to work
Make pressure difference and be divided into low pressure vapor system, middle pressure boiler circuit, high pressure boiler circuit.Wherein, to be guaranteed at temperature end
The quick cooling of first gasification cooling flue 3, and the activity of the fire door 51 in view of combustion settling chamber 5, the first Vaporizing cooling
The cooling of fire door 51 of flue 3 and combustion settling chamber 5 uses low pressure vapor system, and its feedwater is provided by low pressure drum 9, so as to produce
Low-pressure steam；And the second gasification cooling flue 4, combustion settling chamber 5, the 3rd gasification cooling flue 6, the high pressure section of waste heat boiler 8
High pressure boiler circuit is then used, its feedwater is supplied by high pressure drum, so as to produce high steam；The intermediate pressure section of waste heat boiler 8 is adopted
With middle pressure boiler circuit, it feeds water by middle pressure drum 10 to supply, so as to produce middle pressure steam.And pass through what waste heat boiler was handled
Flue gas then enters the dust removal installation in downstream along arrow B directions.The steam that the high pressure drum 11, middle pressure drum 10 are exported is passed through respectively
Cross with steam turbine 21 to coordinate after storage heater, superheater processing and complete UTILIZATION OF VESIDUAL HEAT IN.Specifically, the high pressure drum 11 goes out vapour
Mouth is connected with the air intake of the first storage heater 16, the air intake phase of the venthole of medium pressure drum 10 and the second storage heater 17
Even；The venthole of first storage heater 16 is connected with the air intake of first superheater 19 crossed in heating flue 18, described
The venthole of second storage heater 17 is connected with the air intake of second superheater 20 crossed in heating flue 18.Crossing heating flue 18 can
To be the high-temperature flue on the combustion furnace flue or borrow or other smelting procedures of shared steel mill being separately provided, such as add
Hot stove back-end ductwork, central cooler waste heat boiler flue etc..High-temperature flue gas entered in heating flue 18 along arrow C directions, steam turbine
21 use filling condensing turbine, the main steam import phase of the venthole of first superheater 19 and the steam turbine 21
Even, the venthole of second superheater 20 is connected with the filling import of the steam turbine 21.The steam turbine 21 is used to drive
Generator 24 generates electricity (certainly, it can also be used to drag the acting such as other rotating machineries such as blower fan or water pump).Pressure cooker described above
Drum in cylinder, middle pressure drum, low pressure drum is also known as drum, is most important pressure parts in waste heat boiler.
High pressure boiler circuit, middle pressure carbonated drink the following detailed description of the electric converter gas afterheat utilizing system of many die pressing types
System, low pressure vapor system.It has been sequentially communicated from the exhanst gas outlet of the watercooling elbow 2 of the electric top of converter 1 along flow of flue gas direction
First gasification cooling flue 3, the second gasification cooling flue 4, combustion settling chamber 5, the 3rd gasification cooling flue 6 and waste heat boiler 8.
Again including multiple evaporators and economizer in waste heat boiler 8, wherein, high pressure evaporator 81, high-pressure economizer 82, middle pressure evaporator
83rd, middle pressure economizer 84, low pressure evaporator 85 sequentially circulate along flue gas flow.Low pressure evaporator 85 is used to further reclaim cigarette
Gas waste heat, produces low-pressure steam, and produce with the cooling device of the first gasification cooling flue 3 and the fire door 51 of combustion settling chamber 5
Low-pressure steam together as deoxygenation steam.
The low pressure vapor system includes low pressure drum 9, low pressure recycle pump 12, and the low pressure drum passes through the first down-comer
91 are connected with low pressure recycle pump 12, and the outlet pipeline of the low pressure recycle pump 12 branches into two-way, all the way with the described first vaporization
The water inlet connection of cooling stack 3, another road and the water inlet of the apparatus for vapour-cooling of the fire door 51 of the combustion settling chamber 5 connect
It is logical.The venthole of first gasification cooling flue 3, the apparatus for vapour-cooling of the fire door 51 of the combustion settling chamber 5 go out vapour
Mouth is connected with the rising mouth of pipe of the low pressure drum 9, and the low pressure drum 9 passes through the second down-comer 94 and waste heat pot
The water inlet connection of low pressure evaporator in stove, the rising mouth of pipe of the venthole of the low pressure evaporator and the low pressure drum connects
It is logical.
Medium pressure boiler circuit includes middle pressure drum 10, middle pressure feed pump 13, and the low pressure drum 9 passes through the first water outlet
Pipe 93 is connected with middle pressure feed pump 13, and the outlet pipeline of medium pressure feed pump 13 saves coal with the middle pressure in the waste heat boiler 8
The water inlet connection of device 84, the delivery port of medium pressure economizer 84 passes through pipeline 102 and the water inlet of medium pressure drum 10
Connection, and medium pressure drum 10 passes through the water inlet of the 3rd down-comer 101 and the middle pressure evaporator 83 in the waste heat boiler 8
Mouth is connected, and the venthole of medium pressure evaporator 83 is connected by pipeline 103 with the rising mouth of pipe of medium pressure drum 10, is formed
One natural convection loop；
The high pressure boiler circuit includes high pressure drum 11, high pressure water pump 14, high-pressure circulation pump 15, the low pressure drum
9 are connected by the second outlet pipe 92 with high pressure water pump 14, in the delivery port of the high pressure water pump 14 and the waste heat boiler 8
High-pressure economizer 82 water inlet connection, the delivery port of the high-pressure economizer 82 passes through pipeline 113 and the high pressure drum
11 water inlet connection；The high pressure drum 11 is connected by the 4th down-comer 111 with the high-pressure circulation pump 15, the high pressure
The outlet conduit of circulating pump 15 is divided into multiple branch roads, and water inlet respectively with second gasification cooling flue 4, the burning are sunk
The water inlet connection of the apparatus for vapour-cooling water inlet, the 3rd gasification cooling flue 6 of the bell 52 of room 5 is dropped.Described second
The venthole of gasification cooling flue 4 is connected by pipeline 117 with the rising mouth of pipe of the high pressure drum 11, the 3rd vaporization is cold
But the venthole of flue 6 connected by pipeline 115 with the rising mouth of pipe of the high pressure drum 11, the stove of the combustion settling chamber 5
The venthole of the apparatus for vapour-cooling of lid 52 is connected by pipeline 116 with the rising mouth of pipe of the high pressure drum 11, so as to be formed
Enclosed forced circulation loop.The high pressure drum 11 passes through the 5th down-comer 112 and the high pressure evaporator in the waste heat boiler 8
81 water inlet is connected, and the venthole of the high pressure evaporator 81 passes through pipeline 118 and the rising mouth of pipe of the high pressure drum 11
Connection, forms a natural convection loop, the high pressure drum 11, venthole combination storage heater, the superheater of middle pressure drum 10
Filling condensing turbine 21 is coordinated to complete UTILIZATION OF VESIDUAL HEAT IN.
Smoke waste heat utilization system of the present utility model has high pressure, middle pressure, low-pressure system, not only by the way that electricity is greatly reduced
The exhaust gas temperature of converter afterheat utilizing system and then the electric converter gas waste heat of recovery from " amount ", and according to energy grade height
Design heat-exchange system and then electric converter gas waste heat is reclaimed from " matter ", realize energy step Optimum utilization.
In addition, the low pressure drum 9 is additionally provided with oxygen-eliminating device 95, oxygen-eliminating device 95 is installed on the top of low pressure drum 9, so low
Pressure drum 9 can double as deoxygenation water tank.
In addition, waste heat boiler is additionally provided with condensation water preheater 86, the condensation water preheater 86 is arranged on waste heat boiler 8
The fume side downstream of low pressure evaporator 85, the fume afterheat after economizer cools is used for entering the condensate of steam turbine 21
Row preheating, not only further absorbs fume afterheat, improves the heat-economy of residual neat recovering system, but also can be lowered into down
Swim the flue-gas temperature of dust removal installation.
In addition, one-level convection pass 7 is provided between the 3rd gasification cooling flue 6 and waste heat boiler 8, the convection pass
In be provided with convection recuperator, the outlet conduit of the high-pressure circulation pump 15 and separate in a branch road and the convection pass 7
Convection recuperator water inlet be connected, the venthole of the convection recuperator in the convection pass 7 passes through pipeline 114 and high pressure
The rising mouth of pipe of drum 11 is connected.
In addition, first gasification cooling flue 3, the second gasification cooling flue 4, the 3rd gasification cooling flue 6 can
Single one section of gasification cooling flue, or multistage gasification cooling flue combination.
In addition, first gasification cooling flue 3 can be using portable flue, the He of the second gasification cooling flue 4
3rd gasification cooling flue 6 uses fixed flue, and the gas approach end of first gasification cooling flue 3 and the water cooling are curved
First 2 smoke outlet connects and has default gap, and the gap can adjust to control the air capacity of suction.First vapour
The smoke outlet for changing cooling stack 3 is connected with the gas approach end of second gasification cooling flue 4；First vaporization is cold
But flue 3 and the connection of draw-gear (not shown), the draw-gear can drive the first gasification cooling flue 3 to be moved horizontally,
And the smoke outlet of the first gasification cooling flue 3 is then attached to level on the gas approach end of second gasification cooling flue 4
It is mobile, so as to control the gap between the first gasification cooling flue 3 and watercooling elbow 2, and then realize furnace gas combustion air amount
Regulation.
In addition, the condenser is provided with water supplement port, to supplement the carbonated drink that afterheat utilizing system loses.
In addition, the blow-off line of steam turbine 21 is connected with the condenser 22, the condenser 22 and the condensate pump
23rd, in waste heat boiler 8 condensation water preheater 86, the water inlet edge of the oxygen-eliminating device 95 of low pressure drum 9 condense Water flow-path phase successively
Even.Fume afterheat is not only further absorbed, the heat-economy of residual neat recovering system is improved, but also downstream can be lowered into and is removed
The flue-gas temperature of dirt facility, is conducive to the safe operation of dust removal installation, and improves its running environment, extends its service life.
The beneficial effects of the utility model are：
(1) the high-temperature flue gas waste heat of electric converter is fully recycled, first by way of Vaporizing cooling back and forth
The high-temperature flue gas used heat of electric converter is received, fume afterheat is further then absorbed by convection pass and flue-gas temperature is reduced, with
Improve waste heat boiler service condition, the fume waste heat of electric converter is reclaimed finally by the mode of waste heat boiler, by flue-gas temperature
Certain temperature is reduced to, waste heat has not only been reclaimed, condition can also be provided for the safe operation of the dust removal installation in downstream.
(2) security and heat-economy of system are taken into account in integral layout, boiler circuit is divided into three pressure systems,
Not only by the way that the exhaust gas temperature of electric converter afterheat utilizing system is greatly reduced and then electric converter gas waste heat is reclaimed from " amount ", and
And electric converter gas waste heat is reclaimed according to energy grade height design heat-exchange system and then from " matter ", realize energy step excellent
Change and utilize；In addition, the design of the utility model the whole series afterheat utilizing system, and the annexation between each equipment, it is
Optimization layout after the security and heat-economy of integrated system.
(3) optimize design to the heating surface inside waste heat boiler, traditional waste heat boiler it is general by afterbody by
Hot face is arranged to economizer, and the utility model is additionally arranged condensation water preheater in waste heat boiler afterbody, cools by economizer
Fume afterheat afterwards is used for preheating the condensate that steam turbine comes, and not only further absorbs fume afterheat, improves waste heat
The heat-economy of recovery system, but also the flue-gas temperature of downstream dust removal installation can be lowered into, be conducive to the peace of dust removal installation
Row for the national games, and improve its running environment, extend its service life.
Preferred embodiment of the present utility model is the foregoing is only, the utility model is not limited to, for this area
Technical staff for, the utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle within,
Any modification, equivalent substitution and improvements made etc., should be included within protection domain of the present utility model.
Claims (7)
1. a kind of electric converter gas afterheat utilizing system based on many die pressing types, including the watercooling elbow above electric converter (1)
(2) the first gasification cooling flue (3) that exhanst gas outlet is sequentially communicated along flow of flue gas direction, the second gasification cooling flue (4),
Combustion settling chamber (5), the 3rd gasification cooling flue (6), the convection pass (7) for being built-in with convection recuperator, waste heat boiler (8),
High pressure evaporator (81), high-pressure economizer (82), middle pressure evaporator (83), middle pressure economizer (84) edge in waste heat boiler (8)
Flow of flue gas direction sequentially to arrange, it is characterised in that
The smoke waste heat utilization system is divided into low pressure vapor system, middle pressure boiler circuit, high pressure according to operating pressure difference again
Boiler circuit, wherein,
The low pressure vapor system is used for the fire door (51) of the first gasification cooling flue (3) and combustion settling chamber (5), by low pressure cooker
Cylinder (9) supply feedwater, so as to produce low-pressure steam；And
Medium pressure boiler circuit is used for the flue gas heat for absorbing the intermediate pressure section of waste heat boiler (8), is supplied by middle pressure drum (10)
Feedwater, so as to produce middle pressure steam；
The high pressure boiler circuit is used to cool down the second gasification cooling flue (4), the bell (52) of combustion settling chamber (5), the 3rd
The high pressure section of gasification cooling flue (6), waste heat boiler (8), is supplied by high pressure drum (11) and fed water, so that high steam is produced,
The high pressure drum (11), it is middle pressure drum (10) output steam respectively through storage heater and superheater processing after with steamer
Machine (21), which coordinates, completes UTILIZATION OF VESIDUAL HEAT IN.
2. the electric converter gas afterheat utilizing system according to claim 1 based on many die pressing types, it is characterised in that
The low pressure vapor system includes low pressure drum (9), low pressure recycle pump (12), and the low pressure drum (9) is by under first
Drop pipe (91) is connected with low pressure recycle pump (12), and the outlet pipeline of the low pressure recycle pump (12) branches into two-way, all the way with the
The water inlet connection of one gasification cooling flue (3), another road and the apparatus for vapour-cooling of the fire door (51) of combustion settling chamber (5) enter
The mouth of a river connect, the venthole of first gasification cooling flue (3), the fire door (51) of the combustion settling chamber (5) vaporization it is cold
But the venthole of device is connected with the rising mouth of pipe of the low pressure drum (9), and
Medium pressure boiler circuit includes middle pressure drum (10), middle pressure feed pump (13), and the low pressure drum (9) goes out by first
Water pipe (93) is connected with middle pressure feed pump (13), in the outlet pipeline and the waste heat boiler (8) of medium pressure feed pump (13)
Middle pressure economizer (84) water inlet connection, the delivery port of medium pressure economizer (84) and entering for medium pressure drum (10)
The mouth of a river is connected, and
Medium pressure drum (10) passes through the middle pressure evaporator (83) in the 3rd down-comer (101) and the waste heat boiler (8)
Water inlet is connected, and the venthole of medium pressure evaporator (83) is connected with the rising mouth of pipe of medium pressure drum (10), forms one
Individual natural convection loop；
The high pressure boiler circuit includes high pressure drum (11), high pressure water pump (14), high-pressure circulation pump (15), the low pressure cooker
Cylinder (9) be connected by the second outlet pipe (92) with high pressure water pump (14), the delivery port of the high pressure water pump (14) with it is described
The water inlet connection of high-pressure economizer (82) in waste heat boiler (8), delivery port and the height of the high-pressure economizer (82)
Press the water inlet connection of drum (11)；
The high pressure drum (11) is connected by the 4th down-comer (111) with the high-pressure circulation pump (15), the cycle of higher pressure
The outlet conduit of pump (15) is divided into multiple branch roads, water inlet, the 3rd vapour respectively with second gasification cooling flue (4)
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 and the rising mouth of pipe of the high pressure drum (11)
It is logical, enclosed forced circulation loop is formed,
The high pressure drum (11) passes through the high pressure evaporator (81) in the 5th down-comer (112) and the waste heat boiler (8)
Water inlet is connected, and the venthole of the high pressure evaporator (81) is connected with the rising mouth of pipe of the high pressure drum (11), forms one
Individual natural convection loop.
3. the electric converter gas afterheat utilizing system according to claim 1 based on many die pressing types, it is characterised in that
The venthole of the high pressure drum is connected with the air intake of the first storage heater, and the venthole of medium pressure drum and second stores
The air intake of hot device is connected；
The venthole of first storage heater is connected with crossing the air intake of the first superheater in heating flue, second storage heater
Venthole be connected with crossing the air intake of the second superheater in heating flue；
The venthole of first superheater is connected with the main steam import of the steam turbine, the venthole of second superheater
It is connected with the filling import of the steam turbine.
4. the electric converter gas afterheat utilizing system according to claim 1 based on many die pressing types, it is characterised in that
Low pressure evaporator (85) is set in the afterbody of waste heat boiler, the low pressure drum (9) passes through the second down-comer (94) and institute
State the water inlet connection of low pressure evaporator (85) in waste heat boiler (8), the venthole of the low pressure evaporator (85) with it is described
The rising mouth of pipe connection of low pressure drum (9).
5. the electric converter gas afterheat utilizing system according to claim 4 based on many die pressing types, it is characterised in that remaining
In heat boiler, condensation water preheater is additionally provided with the fume side downstream of the low pressure evaporator, it is solidifying for what is come to steam turbine
Bear water and preheated.
6. the electric converter gas afterheat utilizing system according to claim 2 based on many die pressing types, it is characterised in that described
Separate a branch road on the outlet conduit of high-pressure circulation pump with the water inlet of the convection recuperator in the convection pass to be connected, institute
The venthole for stating the convection recuperator in convection pass is connected by pipeline with the rising mouth of pipe of the high pressure drum.
7. the electric converter gas afterheat utilizing system according to claim 5 based on many die pressing types, it is characterised in that
On condensation water preheater, low pressure drum in the blow-off line and condenser, condensate pump, waste heat boiler of the steam turbine
The water inlet of the oxygen-eliminating device of side is sequentially communicated along Water flow-path is condensed.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106855363A (en) * | 2017-02-08 | 2017-06-16 | 中冶华天工程技术有限公司 | Electric converter gas afterheat utilizing system based on many die pressing types |
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2017
- 2017-02-08 CN CN201720118498.0U patent/CN206479051U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106855363A (en) * | 2017-02-08 | 2017-06-16 | 中冶华天工程技术有限公司 | Electric converter gas afterheat utilizing system based on many die pressing types |
| CN106855363B (en) * | 2017-02-08 | 2019-02-19 | 中冶华天工程技术有限公司 | Electric converter gas afterheat utilizing system based on multiple pressure mode |
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