CN206337286U - The fume waste heat that pneumatic steelmaking is produced is utilized and dust removal integrated system - Google Patents
The fume waste heat that pneumatic steelmaking is produced is utilized and dust removal integrated system Download PDFInfo
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- CN206337286U CN206337286U CN201621358084.7U CN201621358084U CN206337286U CN 206337286 U CN206337286 U CN 206337286U CN 201621358084 U CN201621358084 U CN 201621358084U CN 206337286 U CN206337286 U CN 206337286U
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Abstract
The fume waste heat that the utility model provides a kind of pneumatic steelmaking generation is utilized and dust removal integrated system, system, which includes waste heat boiler, to be used to carry out dedusting to the flue gas that pneumatic steelmaking is produced and produces superheated steam using fume waste heat, its flue gas side entrance is connected through input channel with pneumatic steelmaking with gasification cooling flue, steam side outlet is connected with the steam inlet of steam turbine, and water side entrance is connected with waste heat boiler water supply source；The fume side outlet of deduster, smoke inlet and waste heat boiler, coal-gas recovering diffuses subsystem, is connected with the exhanst gas outlet of deduster.The utility model improves pneumatic steelmaking energy efficiency indexes, and the thermal efficiency is high, improves deduster service life, and small, high efficiency is invested in convenient maintenance.
Description
Technical field
The utility model is related to fume waste heat recycling field, converter steelmaking process in more particularly to a kind of Ferrous Metallurgy
The fume waste heat of middle generation is utilized and dust removal integrated system.
Background technology
In pneumatic steelmaking industrial production, it is anti-that with the oxygen that oxygen rifle is sprayed into converter chemical combination occurs for carbon in converter in molten iron
Should, substantial amounts of carbon monoxide and a small amount of carbon dioxide and minimal amount of other oxides are produced, is then sprayed from converter mouth
Go out, these gases are referred to as furnace gas；Because oxygen rifle sprays into oxygen flow, slag, evaporation and splash part gold are stirred vigorously
Category oxide impurity and bulk raw materials dust spray with furnace gas together, and these materials are referred to as stove dirt.Furnace gas is gone out after fire door
It is flue gas.Pneumatic steelmaking produce flue gas the characteristics of be：Temperature is high, tolerance is more, dustiness is big, and gas has toxicity and blast
Property, is allowed to diffuse and pollutes the environment.Converter gas and flue dust take on a different character, different according to the processing mode used,
The smoke property of gained is also different.
Current processing mode has two kinds of combustion method and unburned method：
(1), combustion method：When furnace gas is from fire door into the petticoat pipe connected with fire door, it is made to be mixed with enough air, making can
Flammability formation high-temp waste gas is fired, high-temp waste gas is drawn and diffused in air by blower fan after supercooling, purification.
(2), unburned method：When furnace gas discharge fire door enters the petticoat pipe connected with fire door, air is set to try one's best by control few
Into furnace gas, therefore, combustible component CO only has a small amount of burning in furnace gas.After supercooling, purification, it is pumped into by blower fan and reclaims system
It is stored up, is used in system.
Unburned method is compared with combustion method, and flue gas is unburned in unburned method, and its small volume, temperature is low, and the particle of flue dust is thick,
It is easy to purification, flue gas recoverable, small investment.Converter current steel-making uses unburned method.In this processing mode of unburned method
In, there are two kinds of processing methods：Wet method (abbreviation OG methods) and dry method (abbreviation LT methods).
(1), wet method：Converter gas is after gasification cooling flue cooling down, and temperature drops to 900 by 1450 DEG C~1400 DEG C
DEG C -1000 DEG C or so, enter the efficient spray scrubbing tower of particular design by high temperature non-metal expansion joint, it is scrubbed cooling, thick
After dedusting, flue gas is changed into saturated flue gas, and temperature is down to 70 DEG C or so, and obtains rough dedusting.
Flue gas (coal gas of converter) of saturation after cooling rough dedusting enters adjustable throat inlet Venturi tube (dedusting Venturi tube), can
Aditus laryngis Venturi tube is adjusted to use circular seam Venturi tube, Wen's management and control tobacco curing gas velocity makes high velocity air carry out refined dedusting by aditus laryngis.
65 DEG C or so are down to by the flue-gas temperature after dedusting Venturi tube refined dedusting, the saturated flue gas after purification is entered by 90 ° of bend pipes
The essence dehydration of swirling flow dehydrator, meets recovered flue gas into blower fan through pipeline and is utilized into converter gas recovery system, do not met
Recovered flue gas delivers to diffusing chimney ignition bleeding.
Dust-laden can reach 50mg/Nm after wet dedusting3, not only water consumption is big, in addition it is also necessary to handle sewage and mud, to environment
There is certain pollution.
(2), dry method：LT dry method dusts are cold by devaporizer through gasification cooling flue cooling down rear converter flue gas
But cooling carries out refined dedusting, qualified coal gas is sent to by switching station after refined dedusting with after rough dedusting into electrostatic precipitator
Gas chamber, it is underproof to be diffused by stack ignition.
Dust-laden can reach 20mg/Nm after dry method dust3, dry method be not required to set sewage, mud-processing equipment.
No matter wet method or dry method are all that 900 DEG C of -1000 DEG C of flue gases are cooled by water, high-temperature flue gas sensible heat wave
Fei Liao.
The content of the invention
In order to solve the problem of high-temperature flue gas sensible heat is wasted present in prior art, on the one hand the utility model provides
The fume waste heat that a kind of pneumatic steelmaking is produced is utilized and dust removal integrated system, and it includes：Waste heat boiler, steam turbine, deduster
Subsystem is diffused with coal-gas recovering；The waste heat boiler is used to carry out dedusting to the flue gas that pneumatic steelmaking is produced and given up using flue gas
Heat produces superheated steam, and the flue gas side entrance of the waste heat boiler is connected through input channel with pneumatic steelmaking with gasification cooling flue
Logical, steam side outlet is connected with the steam inlet of the steam turbine, and water side entrance is connected with waste heat boiler water supply source；It is described to remove
Dirt device is used to carry out the flue gas that the waste heat boiler is discharged dedusting, the smoke inlet of the deduster and the waste heat boiler
Fume side outlet, the coal-gas recovering is diffused subsystem and connected with the exhanst gas outlet of the deduster, is wanted to meeting to reclaim
The flue gas asked is reclaimed, and desired flue gas progress ignition bleeding is reclaimed to not meeting.
In integral system as described above, it is preferable that the waste heat boiler includes：Including furnace wall, drum and edge
Flue gas flow direction is successively set on superheater, evaporator and economizer in the burner hearth surrounded by the furnace wall, and the drum is located at
The top of the waste heat boiler；Waste heat boiler feedwater is entered in the economizer by the water side entrance, the waste heat pot after preheating
Stove feedwater enters in the evaporator through the drum, and heat absorption becomes saturated vapor, then is exported through the drum, subsequently into institute
State in superheater, superheated steam is become by flue gas, then discharged by the steam side outlet.
In integral system as described above, it is preferable that the waste heat boiler also includes：Storage heater；The storage heater
Air intake connected with the drum and come from the saturated vapor of evaporator to receive, the venthole of the storage heater and the mistake
The air intake connection of hot device.
In integral system as described above, it is preferable that the waste heat boiler also includes：Assisted combustion device；It is described
Assisted combustion device is arranged on the input channel, and the saturated vapor entered in the superheater is become for burning fuel
Superheated steam.
In integral system as described above, it is preferable that the fuel be coal gas of converter, the assisted combustion device with
The coal-gas recovering diffuses subsystem to receive coal gas of converter.
In integral system as described above, it is preferable that along side from the inside to the outside on the inwall of the input channel
To setting gradually refractory layer and heat insulation layer.
In integral system as described above, it is preferable that the water side entrance and the exhaust steam outlet of the steam turbine connect
It is logical.
In integral system as described above, it is preferable that the deduster is sack cleaner or electrostatic precipitator.
The beneficial effect brought of technical scheme that the utility model embodiment is provided is：
1st, the fume afterheat produced in pneumatic steelmaking production process can be reclaimed, the cigarette in pneumatic steelmaking production process can be removed
Gas dust, the wider requirement of exhaust gas volumn excursion, the thermal efficiency is up to more than 80%, and efficiency of dust collection is up to 99.95%.
The 2nd, one waste heat boiler is set before deduster, by cigarette temperature drop to less than 200 DEG C so that carried for follow-up refined dedusting
On the basis of fume treatment temperature, it is ensured that the thermal safety of deduster, deduster inlet flue gas temperature problem is efficiently solved,
Improve deduster reliability of operation；Dust concentration is also greatly reduced simultaneously, and dust is collected in and waste heat boiler ash port
In the ash bucket of connection, by Geldart-D particle reuse, total efficiency of dust collection is improved；Also produce steaming using heat energy in flue gas simultaneously
Vapour, and steam turbine acting generating is fed directly to, thermal energy is into electric energy.Compared with traditional fume treatment, due to flue gas heat
It can be fully utilized, so the system and technique have high efficiency, the advantages of operating cost is few.
3rd, waste heat boiler uses single channel vertical structure, takes up an area small, characteristics of compact layout, makes existing improvement project by place
Less-restrictive；The modularized design of waste heat boiler so that efficiency high, it is rational in infrastructure, it is not easily blocked, flow resistance is small.
4th, waste heat boiler is provided with assisted combustion device, makes steam, temperature, pressure flow that waste heat boiler produces stable,
It is stable hence into the steam parameter of steam turbine, generate electricity steady.The blowing later stage can start assisted combustion device, will not meet recovery
Coal gas combustion (of oil) insitu exchanges heat, and improves energy.
Brief description of the drawings
Fig. 1 is utilized and dust removal integrated for the fume waste heat that a kind of pneumatic steelmaking that the utility model embodiment is provided is produced
The structural representation of system.
The fume waste heat for another pneumatic steelmaking that Fig. 2 provides for the utility model embodiment is utilized, generated electricity, dedusting one
The structural representation of change system.
Mark is described as follows in figure：
1 converter, 2 pneumatic steelmaking gasification cooling flues, 3 input channels, 4 waste heat boilers, 5 dedusters, 51 bag-type dusts
Device, 52 electrostatic precipitator, 41 flue gas side entrances, 42 flue gas side outlets, 43 steam side outlets, 44 water side entrances, 6 axial flow blowers, 7
Triple valve, 8 coal gas cooling subsystems, 9 diffusing chimneys, 10 converter gas cabinets, 11 dust transport subsystems, 12 storage heaters, 13 vapour
Turbine, 14 assisted combustion devices.
Embodiment
It is new to this practicality below in conjunction with accompanying drawing to make the purpose of this utility model, technical scheme and advantage clearer
Type embodiment is described in further detail.
Referring to Fig. 1~2, the fume waste heat that the embodiment of the utility model one provides a kind of pneumatic steelmaking generation is utilized and removed
Dirt integral system, it includes waste heat boiler 4, steam turbine 13, deduster 5 and coal-gas recovering and diffuses subsystem.
Waste heat boiler 4 is used to cool to the flue gas that pneumatic steelmaking is produced, exchanged heat and just dedusting, its flue gas side entrance 41
Connected through input channel 3 with pneumatic steelmaking gasification cooling flue 2, the gasification cooling flue 2 is covered in above the fire door of converter 1,
Its flue gas side outlet 42 is connected with the smoke inlet of deduster 5, and the steam inlet 121 of its steam side outlet 43 and steam turbine 13 connects
Logical, Qi Shui side entrances 44 are connected with waste heat boiler water supply source.In order to fully absorb fume waste heat, flue gas is from top to bottom in waste heat
Flowed in boiler 4, i.e. flue gas side entrance 41 is on the side wall on the top of waste heat boiler 4, and flue gas side outlet 42 is located at bottom
On the wall of side, water flows in waste heat boiler 4 from the bottom to top, realizes the heat exchange of flue gas and water, after heat exchange, and water becomes steam entrance
Steam turbine 13, the flue gas after cooling enters deduster 5.Waste heat boiler 4 can also carry out dedusting to flue gas, and (dedusting of waste heat boiler claims
For first dedusting), the dust after dedusting at the beginning of waste heat boiler falls into the first ash port positioned at its bottom, then exports again.Vapour
Turbine 13 is steam turbine, for mechanical energy to be transformed into electric energy, and is outwards conveyed.Preferably, the exhaust steam of steam turbine 13 goes out
The condensed device of mouth is connected with the water side entrance 44 of waste heat boiler 4 so that the exhaust steam that acting is finished, which is condensed into after condensed water, to be returned
Waste heat boiler 4 is exchanged heat with flue gas, i.e. the exhaust steam of steam turbine 13 forms steam-condensation as waste heat boiler water supply source
Water-steam circulation utilizes process so that water resource is recycled.For the ease of conveying, returned after condensed water is pressurized
Waste heat boiler 4 is exchanged heat.Deduster 5 is used to carry out dedusting (dedusting of deduster is referred to as refined dedusting), removing dust device 5 to flue gas
The dust that dedusting is obtained falls into the second ash port positioned at its bottom, then exports again.By the first ash port export dedusting and
The dedusting of second ash port output can be delivered to pending place, such as sintering material field or refining through dust transport subsystem 11
Rotary furnace is for steel-making utilization after steel KR desulphurization systems or briquetting, and so as to reduce conveying and smelt link, conveying power is excellent
Elect nitrogen as.Coal-gas recovering diffuses subsystem and the component content of the flue gas after the dedusting of deduster 5 is analyzed, if meeting recovery
It is required that (such as oxygen content is less than 1 percent in flue gas, and carbon monoxide content is higher than 30 percent and less than 90 percent,
Carbon dioxide oxygen content is less than 20 percent, and now flue gas can be described as coal gas of converter), then recycle, otherwise ignition bleeding.
Specifically, satisfactory flue gas is diffused the switching device of subsystem, such as triple valve 7 by coal-gas recovering, and distribution enters coal gas
Reclaim and diffuse the converter gas cabinet 10 of subsystem and store, the coal gas of converter of storage gives gas user after being pressurizeed again by gas compressor
Use, it is preferable that flue gas after triple valve 7, then through coal-gas recovering diffuse subsystem coal gas cooling subsystem 8 cool down after enter
Converter gas cabinet 10 is stored；Do not meet and reclaim the diffusing chimney that desired flue gas is diffused subsystem by triple valve into coal-gas recovering
9, then through ignition bleeding, igniting can be operated by plasma ignition system.For the ease of the conveying of flue gas after dedusting, in coal-gas recovering
Diffuse setting axial flow blower 6 between subsystem and deduster.Worn and torn to take precautions against waste heat boiler 4 by flue gas, the cigarette in waste heat boiler 4
Gas velocity is preferably 3~4m/s.
By setting waste heat boiler 4 before deduster 5, and the steam turbine 13 being connected with waste heat boiler 4 is set so that turn
The sensible heat energy for the flue gas that stove steel-making is produced is able to fully reclaim, and absorbs and shows thermogenetic steam for generating electricity, produces huge warp
Ji benefit.After the refined dedusting processing of first dust removal process and deduster 5 of the flue gas by waste heat boiler 4, the dustiness of flue gas was both accorded with
Discharge standard is diffused in conjunction, also complies with gas recovery user requirement, and the water content for the flue gas discharged from deduster 5 is substantially reduced,
Substantially increase the quality of recovered flue gas.The thermal safety for being set to deduster 5 of other waste heat boiler 4 provides reliable temperature
Degree is ensured.
Specifically, waste heat boiler 4 include furnace wall, drum and be successively set on along flue gas flow direction in burner hearth superheater,
Evaporator and economizer.Drum is located at the top of waste heat boiler 5.Economizer, evaporator and superheater are connected with drum, waste heat
Boiler feedwater is entered in economizer by water side entrance 44, using the relatively low smoke pre-heating of tail temperature, the waste heat boiler after preheating
Feedwater enters in evaporator through drum, and heat absorption becomes saturated vapor, is exported through drum, subsequently into superheater, by flue gas plus
Then thermal change is discharged into superheated steam by steam side outlet 43, into steam turbine 13.The flue gas entered by flue gas side entrance 41
Temperature is up to 800~1000 DEG C, after cooling through waste heat boiler, and flue-gas temperature drops to less than 200 DEG C.The quantity of evaporator can be
Three groups, it is divided into the first evaporator, the second evaporator and the 3rd evaporator.First evaporator, the second evaporator and the 3rd evaporator
It is successively set on along the flow direction of flue gas in burner hearth.
Preferably, the structure of waste heat boiler 4 is single channel vertical structure, and furnace wall is membrane wall furnace wall.Constitute economizer, steam
The heat pipe of hair device and superheater is preferably light pipe to ensure heat exchange efficiency, and is easy to deashing, light pipe manufactured by seamless steel pipe and
Into.The permutation and combination method of multiple heat pipes of economizer, evaporator and superheater is in-line module array, i.e., horizontally-arranged and vertical setting of types
The arrangement all alignd is to reduce smoke flow resistance.Because the pneumatic steelmaking blowing process discharges a large amount of flue gases, non-blowing process flue gas is released
What is put is seldom, and smoke dust concentration is big, and dust is gathered on the heating surface of heat pipe can make it that heat-transfer effect is poor, resistance increasing
Greatly, it is that this waste heat boiler also includes shaking deashing device and shock-wave ash-clearing device, blowing process startup, which shakes deashing device and realized, to exist
Line shakes deashing；Non- blowing process (during i.e. following auxiliary combustions starts) starts shock-wave ash-clearing device.Waste heat boiler 4 can be used
Modularization, heap modular system manufacture installation.
Concentrated and discharged due to pneumatic steelmaking blowing process exhaust gas volumn, the non-blowing process almost discharges without flue gas, therefore converter is refined
The flue gas that steel is produced is indirectly discontinuous, and the steam pressure and flowed fluctuation that waste heat boiler 4 is produced are huge, are steady vapour pressure
Storage heater 12 is additionally provided with outside power and flow, waste heat boiler 4, its air intake is connected with drum comes from the full of evaporator to receive
And steam, its venthole connects with the air intake of superheater, so excess steam can be stored in into storage with peak load shifting, blowing process
In hot device 12, the steam that non-blowing process storage heater 12 is stored is discharged so that it is stable to enter the steam of steam turbine 13.
In order that the steam pressure and flow into steam turbine 13 are more steady, it is ensured that generated output is constant, does not result in
The fluctuation of power load, waste heat boiler 4 also includes assisted combustion device 14, is arranged on the leading portion of waste heat boiler 4, i.e. input channel
On 3, the end of input channel 3 can be arranged on, in later stage in blowing process not gas recovery, starting and burning fuel, making
The steam that storage heater 12 is stored can still be heated to form superheated steam in superheater and be generated electricity into steam turbine 13, and waste heat boiler
4 can also still produce a small amount of steam, make the operation of the efficient stable of steam turbine 2, and the generating set of steam turbine 12 can guarantee that lasting height
Efficiency power generation.Fuel is preferably coal gas of converter, and such as converter gas cabinet 10 is connected with assisted combustion device 14 with to auxiliary combustion
Device 14 provides coal gas of converter, and coal gas of converter is burnt, RECOVERY OF CONVERTER GAS heat energy is maximally utilized.In, auxiliary combustion
Burn device 14 and bessemerizing startup of being lighted a fire when later stage coal gas is not reclaimed, make coal gas of converter energy utilization to greatest extent, treat next time
The auto extinguishing of Primary period assisted combustion device 14, it is ensured that the normal recovery of next coal gas of converter.
When flue gas flows through input channel 2, flue-gas temperature is up to 800~1000 DEG C, and input channel 2 is flowed through in order to reduce flue gas
When the thermal loss that produces, reduce the reduction amplitude of flue-gas temperature, on the inwall of input channel 2 along direction from the inside to the outside successively
Refractory layer and heat insulation layer are set, and the material of refractory layer can be refractory material, it is adiabatic into material can be fine for complex silicate aluminium
Tie up felt.In order to compensate the thermal stretching of input channel, the compensated device of input channel 2 is connected with the flue gas side entrance 41 of waste heat boiler 2,
Compensator is preferably high-temperature resistant corrugated compensator.
Deduster 5 can be sack cleaner 51, and its gas approach is located at bottom, and exhanst gas outlet is located at top, so profit
In the dust removing effects reached, extend the service life of sack cleaner 51, simplify operating platform, convenient operation and maintenance.
The shell of sack cleaner 51 is round box (i.e. sack cleaner uses round box structure), and each casing sets several
Provided with keel to be played a supporting role to filter bag in filter bag, each filter bag, and made provided with back-blowing device with carrying out purging to filter bag
Dust on filter bag is fallen into the ash silo of the lower section of sack cleaner 51.Due to there is requirement of explosion proof, the medium that back-blowing device is used is
Nitrogen.Casing is provided with explosion-protection equipment and manhole.To ensure to be provided with the continuity and maintenance needs of dedusting, sack cleaner 51
Spare tank.
Deduster 5 or electrostatic precipitator 52, its shell are cylindric (i.e. electrostatic precipitator uses cylinder-like structure),
Inlet air flow distributing plate is provided with it, is realized first by inlet air flow distributing plate into the flue gas stream in deduster uniform
Air-flow, then air-flow continue through four electric fields (as shown in Figure 2).It is provided with electrostatic precipitator and shakes deashing device, and is provided with
Explosion-protection equipment.
In order to which the fume waste heat for improving pneumatic steelmaking generation utilizes the automaticity and reliability with dust removal integrated system
Property, in order to realize that the fume waste heat that pneumatic steelmaking is produced is utilized and dedusting integration process, the integral system is by DCS
(Distributed control system, collective and distributive type control system) is controlled, and the system operating condition can be supervised
Survey and control；Can the various pictures of display or form (parameter or operating mode)；It is provided simultaneously with artificial enquiry, adjustment, operation circle intervened
Face.
Another embodiment of the utility model is provided a kind of fume waste heat produced using above-mentioned pneumatic steelmaking and utilizes and remove
The technique of dirt integral system, is specifically included：
Make the flue gas that pneumatic steelmaking is produced successively through pneumatic steelmaking gasification cooling flue 2 and input channel 3 by waste heat pot
The top of stove enters in waste heat boiler 4；Waste heat boiler fed water and entered by the bottom of waste heat boiler 4 in waste heat boiler, and and flue gas
Heat exchange, is become superheated steam, is then discharged by the top of waste heat boiler 4 and be delivered to steam turbine 13 and sent out with driving steam turbine 13
Electricity；Flue gas after heat exchange escapes and enter the dedusting of deduster 5 by the bottom of waste heat boiler 4, obtains the flue gas after dedusting；Use coal gas
Recovery diffuses subsystem and the flue gas after dedusting is judged, if meeting RECOVERY OF CONVERTER GAS requirement, stores, and otherwise igniting is put
Dissipate；Wherein, pneumatic steelmaking gasification cooling flue 2 is covered in above the fire door of converter 1.
In order that obtaining blowing process and non-blowing process into the steam stable of steam turbine 12, waste heat boiler feeds water by waste heat boiler
4 water side entrance enters in the economizer of waste heat boiler 4, and drum of the waste heat boiler feedwater through waste heat boiler 4 after preheating enters
In the evaporator of waste heat boiler 4, heat absorption becomes saturated vapor, then is exported through drum, subsequently into the storage heater 12 of waste heat boiler 4
It is interior, then export to the superheater of waste heat boiler 4, be heated into superheated steam, be then discharged out to steam turbine 13.
In the blowing process of pneumatic steelmaking, the thermal source that saturated vapor is heated into superheated steam is the cigarette that pneumatic steelmaking is produced
Gas；In the non-blowing process of pneumatic steelmaking, saturated vapor is heated into the thermal source of superheated steam by assisted combustion device 14 to be started
The heat energy of burning fuel formation, so further such that into the steam stable of steam turbine.The description as described in assisted combustion device
Reference can be made to the description as described in assisted combustion device in above-described embodiment, is no longer repeated one by one herein.
In summary, what the utility model was brought has the beneficial effect that：
1st, the fume afterheat produced in pneumatic steelmaking production process can be reclaimed, the cigarette in pneumatic steelmaking production process can be removed
Gas dust, the wider requirement of exhaust gas volumn excursion, the thermal efficiency is up to more than 80%, and efficiency of dust collection is up to 99.95%.
The 2nd, one waste heat boiler is set before deduster, by cigarette temperature drop to less than 200 DEG C so that carried for follow-up refined dedusting
On the basis of fume treatment temperature, it is ensured that the thermal safety of deduster, deduster inlet flue gas temperature problem is efficiently solved,
Improve deduster reliability of operation；Dust concentration is also greatly reduced simultaneously, and dust is collected in and waste heat boiler ash port
In the ash bucket of connection, by Geldart-D particle reuse, total efficiency of dust collection is improved；Also produce steaming using heat energy in flue gas simultaneously
Vapour, and steam turbine acting generating is fed directly to, thermal energy is into electric energy.Compared with traditional fume treatment, due to flue gas heat
It can be fully utilized, so the system and technique have high efficiency, the advantages of operating cost is few.
3rd, waste heat boiler uses single channel vertical structure, takes up an area small, characteristics of compact layout, makes existing improvement project by place
Less-restrictive；The modularized design of waste heat boiler so that efficiency high, it is rational in infrastructure, it is not easily blocked, flow resistance is small.
4th, waste heat boiler is provided with assisted combustion device, makes steam, temperature, pressure flow that waste heat boiler produces stable,
It is stable hence into the steam parameter of steam turbine, generate electricity steady.The blowing later stage can start assisted combustion device, will not meet recovery
Coal gas combustion (of oil) insitu exchanges heat, and improves energy utilization, improves the thermal efficiency.
Generally speaking, the utility model has the following advantages that：Safety, energy-saving and environmental protection, reliability service, space-consuming are few, resistance
Power is small, improves pneumatic steelmaking energy efficiency indexes, and the thermal efficiency is high, improves deduster service life, and convenient maintenance invests small, effect
It is beneficial high.
As known by the technical knowledge, the utility model can be by the realities of other essence or essential feature without departing from its spirit
Scheme is applied to realize.Therefore, embodiment disclosed above, for each side, is all merely illustrative, and is not only
's.All changes in the range of the utility model or in the range of the utility model is equal to are by the utility model bag
Contain.
Claims (8)
1. the fume waste heat that a kind of pneumatic steelmaking is produced is utilized and dust removal integrated system, it is characterised in that the integration system
System includes：Waste heat boiler, steam turbine, deduster and coal-gas recovering diffuse subsystem；
The waste heat boiler is used to carry out dedusting to the flue gas that pneumatic steelmaking is produced and produces superheated steam, institute using fume waste heat
The flue gas side entrance for stating waste heat boiler is connected through input channel with pneumatic steelmaking with gasification cooling flue, steam side outlet with it is described
The steam inlet connection of steam turbine, water side entrance is connected with waste heat boiler water supply source；
The deduster be used for the waste heat boiler discharge flue gas carry out dedusting, the smoke inlet of the deduster with it is described
The fume side outlet of waste heat boiler；
The coal-gas recovering is diffused subsystem and connected with the exhanst gas outlet of the deduster, and the progress of desired flue gas is reclaimed to meeting
Reclaim, desired flue gas progress ignition bleeding is reclaimed to not meeting.
2. integral system according to claim 1, it is characterised in that the waste heat boiler includes：Including furnace wall, drum
And superheater, evaporator and economizer in the burner hearth surrounded by the furnace wall, the vapour are successively set on along flue gas flow direction
Bag is positioned at the top of the waste heat boiler；
Waste heat boiler feedwater is entered in the economizer by the water side entrance, and the waste heat boiler after preheating feeds water through the drum
Into in the evaporator, heat absorption becomes saturated vapor, then is exported through the drum, subsequently into the superheater, by cigarette
Gas heating becomes superheated steam, is then discharged by the steam side outlet.
3. integral system according to claim 2, it is characterised in that the waste heat boiler also includes：Storage heater；
The air intake of the storage heater is connected with the drum comes from the saturated vapor of evaporator to receive, the storage heater
Venthole is connected with the air intake of the superheater.
4. integral system according to claim 3, it is characterised in that the waste heat boiler also includes：Auxiliary combustion is filled
Put；
The assisted combustion device is arranged on the input channel, the saturation for making to enter in the superheater for burning fuel
Steam becomes superheated steam.
5. integral system according to claim 4, it is characterised in that the fuel is coal gas of converter, the auxiliary combustion
Device is burnt to diffuse subsystem to receive coal gas of converter with the coal-gas recovering.
6. integral system according to claim 1, it is characterised in that on the inwall of the input channel along by it is interior extremely
Outer direction sets gradually refractory layer and heat insulation layer.
7. integral system according to claim 1, it is characterised in that the water side entrance and the exhaust steam of the steam turbine
Outlet.
8. integral system according to claim 1, it is characterised in that the deduster is that sack cleaner or electrostatic are removed
Dirt device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621358084.7U CN206337286U (en) | 2016-12-12 | 2016-12-12 | The fume waste heat that pneumatic steelmaking is produced is utilized and dust removal integrated system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621358084.7U CN206337286U (en) | 2016-12-12 | 2016-12-12 | The fume waste heat that pneumatic steelmaking is produced is utilized and dust removal integrated system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106755718A (en) * | 2016-12-12 | 2017-05-31 | 山西致业工程设计有限公司 | The fume waste heat that pneumatic steelmaking is produced is utilized and dust removal integrated system and technique |
| CN114887409A (en) * | 2022-04-26 | 2022-08-12 | 成都易态科技有限公司 | Method for efficiently combining waste heat utilization, dust removal and denitration of high-temperature flue gas |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106755718A (en) * | 2016-12-12 | 2017-05-31 | 山西致业工程设计有限公司 | The fume waste heat that pneumatic steelmaking is produced is utilized and dust removal integrated system and technique |
| CN106755718B (en) * | 2016-12-12 | 2019-04-02 | 山西致业工程设计有限公司 | The fume waste heat utilization and dust removal integrated system and technique that pneumatic steelmaking generates |
| CN114887409A (en) * | 2022-04-26 | 2022-08-12 | 成都易态科技有限公司 | Method for efficiently combining waste heat utilization, dust removal and denitration of high-temperature flue gas |
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Effective date of registration: 20190408 Address after: 100070 Beijing Fengtai Science City Haiying Road 9-7 Building 2-4 Patentee after: Beijing Teda Qingyuan Energy Technology Co., Ltd. Address before: 030009 Two Blocks, One Unit 1903, Block B, Liuxi Building, 182 Beijie Street, Xinghualing District, Taiyuan City, Shanxi Province Patentee before: Shanxi Industrial Engineering Design Co., Ltd. |