CN208720252U - A kind of condensation-reheating integration plume disappears white system - Google Patents
A kind of condensation-reheating integration plume disappears white system Download PDFInfo
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- CN208720252U CN208720252U CN201820814825.0U CN201820814825U CN208720252U CN 208720252 U CN208720252 U CN 208720252U CN 201820814825 U CN201820814825 U CN 201820814825U CN 208720252 U CN208720252 U CN 208720252U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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Abstract
Disappear white system the utility model relates to a kind of condensation-reheating integration plume, which includes the denitrification apparatus being sequentially connected in series, for the fume afterheat of Mist heat recovering utilizes device, electrostatic precipitator, wet desulphurization device, air-introduced machine, tail flue gas heater and chimney for being lifted flue-gas temperature.Compared with prior art, the utility model utilizes fume afterheat heat-setting water, Mist heat recovering, and reduces salt content reduction, tail flue gas heater heats flue gas using bleeder steam, it is lifted flue-gas temperature, flue gas vapors salt content is little at this time, and steam temperature increases, density decline, be conducive to be diffused into higher height after being discharged into atmosphere, reduce the local concentration for being discharged into atmosphere, reduce influence of the flue gas containing cigarette to environment.
Description
Technical field
The utility model relates to coal-burning power plant's tail flue gas processing systems, and in particular to a kind of condensation-reheating integration cigarette
Plumage disappears white system.
Background technique
Coal-fired a large amount of uses, inevitably bring many environmental problems.Coal combustion can generate numerous atmosphere pollution
Object, such as nitrogen oxides, oxysulfide, dust, heavy metal should take effective technology measure to purify coal-burning power plant tail portion cigarette
Gas makes up to increasingly harsh environmental requirement.Sulfur dioxide is one of main pollutant in coal-burning power plant's tail flue gas,
It is all huge harm for the mankind and environment.Limestone-gypsum Wet Flue Gas Desulfurization Process is the more mature sulfur removal technology of current power plant,
But it needs to spray a large amount of absorption slurries in sweetening process, causes humidity of flue gas to increase, is easy to be formed largely in chimney breast
White plume, influences perception.Serious visual pollution makes nearby residents bear a grudge power plant emission flue gas, in the people
It makes a very bad impression, while flue gas saliferous can also impact environment, therefore, the relevant technologies measure is taken to eliminate coal-burning power plant
The white plume phenomenon of chimney breast is necessary.
Utility model content
The purpose of this utility model be exactly to solve the above-mentioned problems and provide a kind of condensation-reheating integration plume disappear it is white
System can not only eliminate the white plume of coal-burning power plant's chimney breast, moreover it is possible to reduce flue gas salt content, and then mitigate flue gas row
The influence caused by environment is put, visual pollution caused by white plume is eliminated, the people is given up and coal-fired plant flue gas is discharged
Misgivings.
The purpose of this utility model is achieved through the following technical solutions:
A kind of condensation-reheating integration plume disappears white system, which includes the denitrification apparatus being sequentially connected in series, is used for
The fume afterheat of Mist heat recovering utilize device, electrostatic precipitator, wet desulphurization device, air-introduced machine, for being lifted flue-gas temperature
Tail flue gas heater and chimney.
Further, the fume afterheat includes the first gas inlet pipeline, the first exhanst gas outlet pipeline using device and sets
First dividing wall type heat exchanger in portion in the inner, first dividing wall type heat exchanger include working medium inlet ductwork and sender property outlet pipe
Road, first gas inlet road connect the denitrification apparatus, and the first exhanst gas outlet pipeline connects the electrostatic precipitator,
The working medium inlet ductwork and sender property outlet piping connection of first dividing wall type heat exchanger are in boiler of power plant circulation system.
Further, the boiler of power plant circulation system includes the water-cooled condenser being sequentially connected in series, condensation
Water pump, low-pressure heater, oxygen-eliminating device, feed pump, high-pressure heater, supercritical once-through boiler and condensing turbine, it is described
First dividing wall type heat exchanger is set between condensate pump and low-pressure heater.
Further, the tail flue gas heater includes the second gas inlet pipeline, the second exhanst gas outlet pipeline and the
Two dividing wall type heat exchangers, second dividing wall type heat exchanger include vapor inlet ductwork and steam outlet pipeline, and described
Two gas inlet pipelines connect the air-introduced machine, and the exhanst gas outlet pipeline connects the chimney, second wall-type heat exchange
The vapor inlet ductwork and steam outlet piping connection of device are in boiler of power plant circulation system.
Further, the vapor inlet ductwork and steam outlet piping connection are in the boiler of power plant thermodynamic cycle
The both ends of steam turbine in system.
Further, first dividing wall type heat exchanger and the second dividing wall type heat exchanger take U-shaped finned-tube bundle to arrange.
Further, first dividing wall type heat exchanger and the second dividing wall type heat exchanger take counter-flow arrangement.
Compared with existing flue gas-flue gas reheat technology (GGH), the flue gas of Tthe utility model system first passes through denitrification apparatus
Denitration is carried out, then is dusted to electrostatic precipitator, fume afterheat is set between denitrification apparatus and electrostatic precipitator and utilizes device
Mist heat recovering reduces flue-gas temperature, while reducing vapor salt content in flue gas, and the fume afterheat of recycling is solidifying for heating
It bears water, in electrostatic precipitator inlet, the temperature of flue gas is 140 DEG C or so, and flue gas is by electrostatic precipitator, then arrives wet desulphurization
Device carries out sulfur removal technology, and flue gas enters absorption tower, and absorption tower is countercurrent spray empty tower structure, collects absorption, oxidative function in one
Body, flue gas are inversely contacted with the loop slurry in absorption tower, calcium carbonate in sulfur dioxide and slurries in flue gas and are blasted
Oxidation air chemically react to being removed, which causes humidity of flue gas to increase, and exhaust gas temperature reduces, most
Eventually in chimney outlet flue-gas temperature under dew-point temperature, a large amount of white plumes are formed, flue gas flows through wet desulphurization device, then
To air-introduced machine, flue-gas temperature is 60 DEG C or so at this time, for the white plume phenomenon for eliminating chimney breast, air-introduced machine and chimney it
Between tail flue gas heater is set, so that flue-gas temperature is lifted to 120 DEG C or so, then arrive smoke stack emission, the vapor temperature in flue gas
Degree increases, density decline, is conducive to be diffused into higher height after being discharged into atmosphere, reduces the local concentration for being discharged into atmosphere, effectively
The white plume for eliminating chimney breast, gives up the misgivings that the people discharges power-plant flue gas.
The flue gas after desulfurization reaches exhaust gas temperature by the flue gas of implementation in power plant-flue gas reheat technology (GGH) at present
To on dew point, attempt to eliminate white plume by this measure, but water capacity is larger in flue gas at this time, easily forms smoke evacuation landing drop
Bad phenomenon, and this method will lead to the corrosion of GGH component and the blocking of heat exchange element, so that reduce WFGD system can
With rate.The utility model carries out heat exchange cooling, Mist heat recovering to flue gas in ESP import, while reducing water in flue gas and steaming
Then gas salt content is lifted flue-gas temperature in chimney entrance, steam salt content is little in flue gas at this time, and it is anti-to reduce inner wall of stack
Rotten process specifications.
The utility model has the beneficial effects that:
1, using fume afterheat heat-setting water, Mist heat recovering reduces power plant thermodynamic loss, reduces power generation coal
It consumes, saves non-renewable energy, flue gas and working medium wall-type heat exchange, so that flue-gas temperature reduces, and reduce salt content reduction, mitigation pair
It is influenced caused by environment.
2, tail flue gas heater heats flue gas using bleeder steam, is lifted flue-gas temperature, at this time flue gas vapors saliferous
Less, steam temperature increases amount, density decline, is conducive to be diffused into higher height after being discharged into atmosphere, reduction is discharged into atmosphere
Local concentration, reduce influence of the flue gas containing cigarette to environment.
3, exhaust gas temperature rises, and the vapor salt content in flue gas is little, mitigates influence of the low-temperature corrosion to chimney, from
And reduce the consume of chimney lining titanium alloy plate material indirectly, reduce regular maintenance cost.
4, Tthe utility model system is reasonable in design, easy to operate, and initial cost is small, and later maintenance cost is low, is conducive to
It is a wide range of to promote and implement.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of Tthe utility model system；
Fig. 2 is the structural schematic diagram that the utility model fume afterheat is connected to boiler of power plant circulation system using device；
Fig. 3 is the structural schematic diagram that the utility model tail flue gas heater is connected to boiler of power plant circulation system；
In figure: denitrification apparatus 1, fume afterheat utilize device 2, electrostatic precipitator 3, wet desulphurization device 4, air-introduced machine 5, tail portion
Flue gas heater 6, chimney 7, the first gas inlet pipeline 21, the first exhanst gas outlet pipeline 22, working medium inlet ductwork 23, working medium go out
Mouth pipeline 24, the first dividing wall type heat exchanger 25, the second gas inlet pipeline 61, the second exhanst gas outlet pipeline 62, vapor import
Pipeline 63, steam outlet pipeline 64, the second dividing wall type heat exchanger 65.
Specific embodiment
The utility model is described in detail in the following with reference to the drawings and specific embodiments.
Embodiment 1
A kind of condensation-reheating integration plume disappears white system, such as Fig. 1, which includes the denitration dress being sequentially connected in series
It sets 1, utilize device 2 for the fume afterheat of Mist heat recovering, electrostatic precipitator 3, wet desulphurization device 4, air-introduced machine 5, be used for
It is lifted the tail flue gas heater 6 and chimney 7 of flue-gas temperature.Fume afterheat includes the first gas inlet pipeline 21, the using device 2
One exhanst gas outlet pipeline 22 and the first dividing wall type heat exchanger 25 inside it, the first dividing wall type heat exchanger 25 include working medium
Inlet ductwork 23 and sender property outlet pipeline 24, the first gas inlet road 21 connect denitrification apparatus 1, and the first exhanst gas outlet pipeline 22 connects
Electrostatic precipitator 3 is connect, the working medium inlet ductwork 23 and sender property outlet pipeline 24 of the first dividing wall type heat exchanger 25 are connected to power plant's pot
In furnace circulation system.Such as Fig. 2, boiler of power plant circulation system includes the water-cooled condenser being sequentially connected in series, coagulates
Pump, low-pressure heater, oxygen-eliminating device, feed pump, high-pressure heater, supercritical once-through boiler and condensing turbine are born water, the
One dividing wall type heat exchanger 25 is set between condensate pump and low-pressure heater.Tail flue gas heater 6 includes the second gas inlet
Pipeline 61, the second exhanst gas outlet pipeline 62 and the second dividing wall type heat exchanger 65, the second dividing wall type heat exchanger 65 include vapor into
Mouth pipeline 63 and steam outlet pipeline 64, the second gas inlet pipeline 61 connect air-introduced machine 5, and exhanst gas outlet pipeline 62 connects cigarette
Chimney 7, the vapor inlet ductwork 63 and steam outlet pipeline 64 of the second dividing wall type heat exchanger 65 are connected to boiler of power plant heating power
In the circulatory system, such as Fig. 3, vapor inlet ductwork 63 and steam outlet pipeline 64 are connected to boiler of power plant thermodynamic cycle system
The both ends of steam turbine in uniting.First dividing wall type heat exchanger 25 and the second dividing wall type heat exchanger 65 take U-shaped finned-tube bundle to arrange,
First dividing wall type heat exchanger 25 and the second dividing wall type heat exchanger 65 take counter-flow arrangement.
Power-plant flue gas treatment process are as follows: flue gas flows through denitrification apparatus and carries out denitration, then is dusted to electrostatic precipitator,
Fume afterheat is set between denitrification apparatus and electrostatic precipitator and utilizes device Mist heat recovering, reduces flue-gas temperature, reduces simultaneously
The fume afterheat of vapor salt content in flue gas, recycling is used for heat-setting water, in the temperature of electrostatic precipitator inlet flue gas
It is 140 DEG C or so.Flue gas carries out sulfur removal technology by electrostatic precipitator, then to wet desulphurization device, and flue gas enters absorption tower, inhales
Receipts tower is countercurrent spray empty tower structure, integrates absorption, oxidative function, flue gas inversely connects with the loop slurry in absorption tower
Touching, calcium carbonate in sulfur dioxide and slurries in flue gas and the oxidation air blasted chemically react being removed,
The technical process causes humidity of flue gas to increase, and exhaust gas temperature reduces, finally in chimney outlet flue-gas temperature in dew-point temperature
Under, form a large amount of white plumes.Flue gas flows through wet desulphurization device, then arrives air-introduced machine, and flue-gas temperature is 60 DEG C or so at this time,
For the white plume phenomenon for eliminating chimney breast, tail flue gas heater is set between air-introduced machine and chimney, makes flue-gas temperature
120 DEG C or so are lifted to, then arrives smoke stack emission, the steam temperature in flue gas increases, and density decline is conducive to after being discharged into atmosphere
It is diffused into higher height, the local concentration for being discharged into atmosphere is reduced, effectively eliminates the white plume of chimney breast, gives up people group
The misgivings that crowd discharges power-plant flue gas.
Referring to Fig.2, fume afterheat using device by the heat exchange of working medium and flue gas come Mist heat recovering, condenser passes through solidifying
Pump connection low-pressure heater is born water, low-pressure heater connects oxygen-eliminating device, and oxygen-eliminating device connects high-pressure heater, high pressure by feed pump
Heater connects boiler, and boiler connects steam turbine, and steam turbine connects the condenser and constitutes boiler circuit thermodynamic cycle, more than flue gas
Heat utilization device is separately connected the condenser outlet and the low-pressure heater entrance.
Fume afterheat utilizes the flue gas flow of device are as follows: flue-gas temperature is 140 DEG C or so after denitrification apparatus, and flue gas passes through
Gas inlet pipeline enters flue gas-working medium dividing wall type heat exchanger, and flue gas and working medium carry out in flue gas-working medium dividing wall type heat exchanger
Wall-type heat exchange makes flue-gas temperature be reduced to 80 DEG C or so, and flue gas enters electrostatic precipitator by exhanst gas outlet pipeline later.
Fume afterheat utilizes the working medium flow of device are as follows: the part working medium extracted from condenser is entered by working medium inlet ductwork
Flue gas-working medium dividing wall type heat exchanger absorbs fume afterheat, and the working medium after heating passes through sender property outlet pipeline again and returns to low-pressure heating
Device.
Refering to Fig. 3, tail flue gas heater raises flue-gas temperature, condenser by bleeder steam and flue gas heat exchange
Low-pressure heater is connected by condensate pump, low-pressure heater connects oxygen-eliminating device, and oxygen-eliminating device connects hyperbaric heating by feed pump
Device, high-pressure heater connect boiler, and boiler connects steam turbine, and steam turbine connects the condenser composition boiler circuit heating power and follows
Ring, tail flue gas heater are separately connected bleeder steam pipeline and the condenser entrance.
Above embodiments are intended to the specific implementation process of description the utility model, main feature and advantage.It should be pointed out that
The utility model is not limited by above-described embodiment.Under the utility model basic principle and spirit, improvements introduced or retouching,
It is regarded as scope of protection of the utility model.
Claims (6)
- The white system 1. a kind of condensation-reheating integration plume disappears, which is characterized in that the system includes the denitration being sequentially connected in series Device (1), for Mist heat recovering fume afterheat using device (2), electrostatic precipitator (3), wet desulphurization device (4), draw Blower (5), tail flue gas heater (6) and chimney (7) for being lifted flue-gas temperature, the fume afterheat are wrapped using device (2) Include the first gas inlet pipeline (21), the first exhanst gas outlet pipeline (22) and set on its first internal dividing wall type heat exchanger (25), first dividing wall type heat exchanger (25) includes working medium inlet ductwork (23) and sender property outlet pipeline (24), and described first Gas inlet pipeline (21) connects the denitrification apparatus (1), and the first exhanst gas outlet pipeline (22) connects the electrostatic precipitation Device (3), the working medium inlet ductwork (23) and sender property outlet pipeline (24) of first dividing wall type heat exchanger (25) are connected to power plant In the boiler heating power circulatory system.
- The white system 2. a kind of condensation according to claim 1-reheating integration plume disappears, which is characterized in that the power plant The boiler heating power circulatory system include the water-cooled condenser being sequentially connected in series, condensate pump, low-pressure heater, oxygen-eliminating device, to Water pump, high-pressure heater, supercritical once-through boiler and condensing turbine, first dividing wall type heat exchanger (25) are set to solidifying It bears water between pump and low-pressure heater.
- The white system 3. a kind of condensation according to claim 2-reheating integration plume disappears, which is characterized in that the tail portion Flue gas heater (6) includes the second gas inlet pipeline (61), the second exhanst gas outlet pipeline (62) and the second dividing wall type heat exchanger (65), second dividing wall type heat exchanger (65) includes vapor inlet ductwork (63) and steam outlet pipeline (64), described Second gas inlet pipeline (61) connects the air-introduced machine (5), and the second exhanst gas outlet pipeline (62) connects the chimney (7), the vapor inlet ductwork (63) of second dividing wall type heat exchanger (65) and steam outlet pipeline (64) are connected to electricity In factory's boiler heating power circulatory system.
- The white system 4. a kind of condensation according to claim 3-reheating integration plume disappears, which is characterized in that the water steams Gas inlet pipe road (63) and steam outlet pipeline (64) are connected to two of steam turbine in the boiler of power plant circulation system End.
- The white system 5. a kind of condensation according to claim 3-reheating integration plume disappears, which is characterized in that described first Dividing wall type heat exchanger (25) and the second dividing wall type heat exchanger (65) take U-shaped finned-tube bundle to arrange.
- The white system 6. a kind of condensation according to claim 3-reheating integration plume disappears, which is characterized in that described first Counter-flow arrangement is taken in dividing wall type heat exchanger (25) and the second dividing wall type heat exchanger (65).
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| CN201820814825.0U CN208720252U (en) | 2018-05-29 | 2018-05-29 | A kind of condensation-reheating integration plume disappears white system |
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| CN201820814825.0U CN208720252U (en) | 2018-05-29 | 2018-05-29 | A kind of condensation-reheating integration plume disappears white system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679638A (en) * | 2018-05-29 | 2018-10-19 | 上海电力学院 | A kind of condensation-reheating integration plume disappears white system |
| CN110613989A (en) * | 2019-09-27 | 2019-12-27 | 安阳龙宇投资管理有限公司 | Coal slurry boiler flue gas desulfurization and denitrification system |
-
2018
- 2018-05-29 CN CN201820814825.0U patent/CN208720252U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679638A (en) * | 2018-05-29 | 2018-10-19 | 上海电力学院 | A kind of condensation-reheating integration plume disappears white system |
| CN110613989A (en) * | 2019-09-27 | 2019-12-27 | 安阳龙宇投资管理有限公司 | Coal slurry boiler flue gas desulfurization and denitrification system |
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