CN209714720U - It is a kind of to discard UTILIZATION OF VESIDUAL HEAT IN for coal-burning power plant and eliminate the device of chimney white cigarette - Google Patents
It is a kind of to discard UTILIZATION OF VESIDUAL HEAT IN for coal-burning power plant and eliminate the device of chimney white cigarette Download PDFInfo
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- CN209714720U CN209714720U CN201822144563.4U CN201822144563U CN209714720U CN 209714720 U CN209714720 U CN 209714720U CN 201822144563 U CN201822144563 U CN 201822144563U CN 209714720 U CN209714720 U CN 209714720U
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Abstract
The utility model discloses a kind of devices that UTILIZATION OF VESIDUAL HEAT IN and elimination chimney white cigarette are discarded for coal-burning power plant, including along the sequentially connected front end heat pipe of flue gas flow direction, electrostatic precipitator, wet desulphurization device, rear end heat pipe and chimney；Front end heat pipe includes being set to the front end heat exchange of heat pipe cold end between steam turbine condenser water pump and low-pressure heater and the front end heat exchange of heat pipe hot end before electrostatic precipitator；Rear end heat pipe includes set on the rear end heat exchange of heat pipe hot end between wet desulphurization device and chimney and the rear end heat exchange of heat pipe cold end in the circulation loop of cooler and water pump composition.The utility model has the beneficial effects that taking full advantage of coal-burning power plant tail portion waste heat, vapor in tail flue gas, salt content are reduced, conducive to eliminating chimney white cigarette and reducing the pollutant load being emitted into atmosphere.
Description
Technical field
The utility model relates to coal-burning power plant's tail flue gas processing technology fields, are applied to combustion in particular to one kind
Coal-fired plant discards UTILIZATION OF VESIDUAL HEAT IN and eliminates the device of chimney white cigarette.
Background technique
China is consumption of coal big country, and thermoelectricity consumption coal accounts for 47% or so of coal aggregate consumption, and caused by coal burning
Air pollution problems inherent is increasingly serious, and should adopt an effective measure makes coal-burning power plant's emission reach constantly raised environmental protection mark
It is quasi-.The Limestone-gypsum Wet Flue Gas Desulfurization Process that major part coal-burning power plant uses at present will lead to humidity of flue gas increase, easily in throat
Form white cigarette.This has seriously affected the fear phychology of environmental visual and nearby residents.Therefore, it reduces in coal-burning power plant's discharge flue gas
A large amount of white cigarettes that the saline pollution object and chimney breast being mingled with are formed have critically important meaning.
Utility model content
To solve the above problems, the purpose of this utility model is to provide one kind for coal-burning power plant discard UTILIZATION OF VESIDUAL HEAT IN and
Eliminate chimney white cigarette device, take full advantage of coal-burning power plant tail portion waste heat, and reduce vapor in tail flue gas, salt contains
Amount is conducive to eliminate chimney white cigarette and reduces the pollutant load being emitted into atmosphere.
The utility model provides a kind of device that UTILIZATION OF VESIDUAL HEAT IN and elimination chimney white cigarette are discarded for coal-burning power plant, packet
It includes: along the sequentially connected front end heat pipe of flue gas flow direction, electrostatic precipitator, wet desulphurization device, rear end heat pipe heat exchanging
Device and chimney；
The front end heat pipe is arranged at exhaust pass, and the front end heat pipe includes front end heat pipe
Heat exchanger cold end and front end heat exchange of heat pipe hot end, the front end heat exchange of heat pipe cold end be set to steam turbine condenser water pump with it is low
It presses between heater, front end heat exchange of heat pipe hot end is set to before the electrostatic precipitator；
The rear end heat pipe includes rear end heat exchange of heat pipe hot end and rear end heat exchange of heat pipe cold end, after described
Heat exchange of heat pipe hot end is held to be set between the wet desulphurization device and the chimney, the rear end heat exchange of heat pipe cold end is set to
In the circulation loop of cooler and water pump composition.
It is further improved as the utility model, the front end heat exchange of heat pipe cold end is provided with liquid inlet A and liquid
Body exports A, and the steam turbine condenser water pump is connect with the liquid inlet A, the liquid outlet A and the low-pressure heater
Arrival end connection；
Front end heat exchange of heat pipe hot end is provided with gas access A and gas vent A, and exhaust pass enters with the gas
Mouth A connection, the gas vent A are connect with the electrostatic precipitator.
It is further improved as the utility model, the low-pressure heater outlet end is connected to oxygen-eliminating device.
It is further improved as the utility model, it is gentle that rear end heat exchange of heat pipe hot end is provided with gas access B
Body exports B, and the wet desulphurization device is connect with the gas access B, and the gas vent B is connect with the chimney；
The rear end heat exchange of heat pipe cold end be provided with liquid inlet B and liquid outlet B, the liquid inlet B with it is described
Water pump connection, the liquid outlet B are connect with the cooler.
It is further improved as the utility model, rear end heat exchange of heat pipe hot end bottom is connected to recycling pond.
It is further improved as the utility model, the recycling pond is connected to water treatment system.
It is further improved as the utility model, the front end heat pipe is vertically arranged.
It is further improved as the utility model, the rear end heat pipe is obliquely installed.
The utility model has the following beneficial effects:
1, using fume afterheat heat-setting water, Mist heat recovering reduces coal-burning power plant's thermodynamic loss, reduces power generation coal
Consumption saves non-renewable energy.
2, heat pipe heat exchanging performance is strong, can be good at carrying out cold and hot section of medium heat exchange, high-efficient.
3, exhaust gas temperature is reduced using condensing heat-exchange in tail flue gas part and makes Water vapor condensation Cheng Shui in flue gas simultaneously,
Dissolution simultaneously condenses together with the salt in vapor also companion vapor into condensed water, reduces the salt in the flue gas of discharge
The white plume phenomenon that flue gas is formed in throat can be effectively reduced in class and water capacity, reduces discharge flue gas to the shadow of environment
It rings.
4, it is mingled with a large amount of salts in the condensed water formed after the liquefaction of saliferous vapor in flue gas, can be filled subsequently through processing
Extraction salt is set, salt can be used for other industrial uses, and purified water can be used for power plant's addition water or other purposes.
5, reasonable in design, initial investment is small, easy to operate, easy to maintain, is conducive to large-scale promotion and implementation.
Detailed description of the invention
Fig. 1 is that a kind of of the utility model discards UTILIZATION OF VESIDUAL HEAT IN for coal-burning power plant and eliminate the knot of the device of chimney white cigarette
Structure schematic diagram；
Fig. 2 is that the front end heat pipe of the utility model is connected in the structural representation of boiler of power plant circulation system
Figure；
Fig. 3 is the structural schematic diagram that the utility model rear end heat pipe is connected in cooling medium circulation system.
In figure,
1, front end heat pipe；2, electrostatic precipitator；3, wet desulphurization device；4, rear end heat pipe；5,
Cooler；6, pond is recycled；7, chimney；8, water pump；9, water treatment system；10, oxygen-eliminating device；21, steam turbine condenser water pump；
22, front end heat exchange of heat pipe cold end；23, low-pressure heater；24, front end heat exchange of heat pipe hot end；31, rear end heat exchange of heat pipe heat
End；32, rear end heat exchange of heat pipe cold end.
Specific embodiment
Below by specific embodiment and in conjunction with attached drawing, the utility model is further described in detail.
As shown in Figure 1, one kind of the utility model embodiment discards UTILIZATION OF VESIDUAL HEAT IN for coal-burning power plant and elimination chimney is white
The device of cigarette, comprising: along the sequentially connected front end heat pipe 1 of flue gas flow direction, electrostatic precipitator 2, wet desulphurization device
3, rear end heat pipe 4 and chimney 7.
As shown in Fig. 2, front end heat pipe 1 is used for Mist heat recovering, it is arranged at exhaust pass, front end heat pipe
Heat-exchanger rig 1 includes front end heat exchange of heat pipe cold end 22 and front end heat exchange of heat pipe hot end 24, front end heat exchange of heat pipe cold end 22
Between steam turbine condenser water pump 21 and low-pressure heater 23, front end heat exchange of heat pipe hot end 24 is set to electrostatic precipitator 2
Before.
Further, front end heat exchange of heat pipe cold end 22 is provided with liquid inlet A and liquid outlet A, steam turbine condenser
Water pump 21 is connect with liquid inlet A, and liquid outlet A is connect with 23 arrival end of low-pressure heater；Front end heat exchange of heat pipe hot end 24
It is provided with gas access A and gas vent A, exhaust pass is connect with gas access A, and gas vent A and electrostatic precipitator 2 connect
It connects.23 outlet end of low-pressure heater connects oxygen-eliminating device 10.
Exhaust pass is entered in front end heat exchange of heat pipe hot end 24 by gas access A, front end heat exchange of heat pipe hot end 24
It is evaporated after heated, absorbs flue gas heat, generate the latent heat of vaporization, the steam of generation pressure difference in the pipe of front end heat pipe 1
Under the action of, flow to front end heat exchange of heat pipe cold end 22, steam encounters the wall surface of front end heat exchange of heat pipe cold end 22 and external cold
Source (introduces the steam turbine condensed water of liquid inlet A by steam turbine condenser water pump 21), condenses into liquid, while releasing vaporization
Latent heat, and liquid is transmitted to by the tube wall of front end heat exchange of heat pipe cold end 22, the liquid and condensed water of condensation pass through liquid outlet A
It is introduced into low-pressure heater 23 and heats, after the condensed water after heating reaches 10 deoxygenation of oxygen-eliminating device, followed for boiler of power plant heating power
Thermodynamic cycle is carried out in loop system, and the flue gas after cooling down enters electrostatic precipitator 2 by gas vent A and carries out flue gas ash removal,
Flue gas desulfurization is carried out by wet desulphurization device 3 again.
Further, front end heat pipe 1 is vertically arranged, and is conducive to fume gas condensation into liquid, and then is conducive to entirely change
Thermal process.
As shown in figure 3, rear end heat pipe 4 is used to condense flue gas, including rear end heat exchange of heat pipe hot end 31 is with after
Heat exchange of heat pipe cold end 32 is held, rear end heat exchange of heat pipe hot end 31 is set between wet desulphurization device 3 and chimney 7, rear end heat pipe
Heat exchanger cold end 32 is set in the circulation loop that cooler 5 and water pump 8 form.It installs additional after wet desulphurization device for condensing cigarette
The rear end heat pipe 4 of gas makes most of wet flue gas be able to be condensed into water, disappears after carrying out heat exchange with cryogenic media
A large amount of white plume phenomenons are formed except vapor condenses.
Further, rear end heat exchange of heat pipe hot end 31 is provided with gas access B and gas vent B, wet desulphurization device 3
It is connect with gas access B, gas vent B is connect with chimney 7；Rear end heat exchange of heat pipe cold end 32 is provided with liquid inlet B and liquid
Body exports B, and liquid inlet B is connect with water pump 8, and liquid outlet B is connect with cooler 5.31 bottom of rear end heat exchange of heat pipe hot end
It is connected to recycling pond 6, recycling pond 6 is connected to water treatment system.
Wet flue gas after desulfurization enters rear end heat exchange of heat pipe hot end 31 by gas access B, and wet flue gas is in rear end heat pipe
Condensing heat-exchange is carried out in heat-exchanger rig 4, after wet flue gas encounters rear end heat exchange of heat pipe cold end 32, so that wet flue gas reaches in temperature
Water is condensed under dew-point temperature, since solubility of the salts substances in vapor is far below solubility in water, at this time
Flue gas containing a large amount of vapor has also taken away a large amount of scripts during being condensed into water in this section and has been dissolved in flue gas vapor
In salts substances so that the content of vapor and salts substances has decline in flue gas, in the flue gas that reduces the discharge of chimney 7
The content of saline pollution object, and remove the flue gas after vapor by gas vent B enter in chimney 7 with hot-air combination drying
After be discharged into atmosphere, due to the reduction of vapor in flue gas, be also not easy to form a large amount of white plumes in the outlet of chimney 7, improve combustion
Coal-fired plant's flue gas emission cleanliness.The condensed water of condensation enters cooler 5 by liquid inlet B, will under the action of cooler
Medium is cooling, and enters back into rear end heat exchange of heat pipe cold end 32 after being recycled to liquid outlet B by water pump 8, for wet flue gas
Condensing heat-exchange, and extra condensed water is recycled in water treatment system 9 by recycling pond 6 and is handled.
Further, rear end heat pipe 4 is obliquely installed, conducive to the condensing heat-exchange of wet flue gas, so that steam is easier to
Condense into water.
A method of UTILIZATION OF VESIDUAL HEAT IN is discarded for coal-burning power plant and eliminates chimney white cigarette, is used to fire based on embodiment 1
Coal-fired plant discards UTILIZATION OF VESIDUAL HEAT IN and eliminates the device of chimney white cigarette, method includes the following steps:
Step 1, the flue gas of exhaust pass enters front end heat pipe 1, and high-temperature flue gas is in front end heat pipe 1
Interior progress fume afterheat reduces flue-gas temperature using recycling, and low-pressure heater 23 heats steam turbine condensed water, the condensation after heating
Water is in boiler of power plant circulation system.
Step 2, the flue gas after cooling enters the progress flue gas ash removal of electrostatic precipitator 2, then is carried out by wet desulphurization device 3
Flue gas desulfurization, flue gas are in contact with the desulfurization slurry in wet desulphurization device 3, and desulfurization while increases humidity of flue gas,
Flue-gas temperature reduces.
Step 3, the wet flue gas after desulfurization enters rear end heat pipe 4, flue gas in rear end heat pipe 4 into
Row condensing heat-exchange, so that wet flue gas reaches in temperature is condensed into water under dew-point temperature, the process for being condensed into water has been taken away largely
Originally the salts substances being dissolved in flue gas vapor, so that the content of vapor and salts substances has decline in flue gas, drop
The content of saline pollution object in the flue gas that low chimney 7 discharges, extra condensed water are recycled to water process system by recycling pond 6
It is handled in system, and removes the flue gas after vapor and enter in chimney 7 and be discharged into atmosphere after hot-air combination drying, can be disappeared
White-smoke-removing.Wherein, the condensed water after 4 condensing heat-exchange of rear end heat pipe is maintained at stable under the action of cooler 5
Temperature, water pump 8 provides the circulation power of condensed water, while the condensed water after cooling is sent into rear end heat pipe 4 and is continued
Condensation heat is carried out to change.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (8)
1. a kind of discard UTILIZATION OF VESIDUAL HEAT IN for coal-burning power plant and eliminate the device of chimney white cigarette characterized by comprising along flue gas
Flow to sequentially connected front end heat pipe (1), electrostatic precipitator (2), wet desulphurization device (3), rear end heat pipe heat exchanging
Device (4) and chimney (7)；
The front end heat pipe (1) is arranged at exhaust pass, and the front end heat pipe (1) includes front end heat
Heat exchange of heat pipe cold end (22) and front end heat exchange of heat pipe hot end (24), the front end heat exchange of heat pipe cold end (22) are set to steam turbine
Between condenser water pump (21) and low-pressure heater (23), front end heat exchange of heat pipe hot end (24) is set to the electrostatic precipitation
Before device (2)；
The rear end heat pipe (4) includes rear end heat exchange of heat pipe hot end (31) and rear end heat exchange of heat pipe cold end
(32), rear end heat exchange of heat pipe hot end (31) are set between the wet desulphurization device (3) and the chimney (7), described
Rear end heat exchange of heat pipe cold end (32) is set in the circulation loop of cooler (5) and water pump (8) composition.
2. the apparatus according to claim 1, which is characterized in that the front end heat exchange of heat pipe cold end (22) is provided with liquid
Entrance A and liquid outlet A, the steam turbine condenser water pump (21) connect with the liquid inlet A, the liquid outlet A with
Low-pressure heater (23) the arrival end connection；
Front end heat exchange of heat pipe hot end (24) is provided with gas access A and gas vent A, and exhaust pass enters with the gas
Mouth A connection, the gas vent A are connect with the electrostatic precipitator (2).
3. the apparatus of claim 2, which is characterized in that low-pressure heater (23) outlet end is connected to deoxygenation
Device.
4. the apparatus according to claim 1, which is characterized in that rear end heat exchange of heat pipe hot end (31) is provided with gas
Entrance B and gas vent B, the wet desulphurization device (3) connect with the gas access B, the gas vent B and the cigarette
Chimney (7) connection；
The rear end heat exchange of heat pipe cold end (32) be provided with liquid inlet B and liquid outlet B, the liquid inlet B with it is described
Water pump (8) connection, the liquid outlet B are connect with the cooler (5).
5. the apparatus according to claim 1, which is characterized in that rear end heat exchange of heat pipe hot end (31) bottom is connected to
It recycles pond (6).
6. device according to claim 5, which is characterized in that the recycling pond (6) is connected to water treatment system.
7. the apparatus according to claim 1, which is characterized in that the front end heat pipe (1) is vertically arranged.
8. the apparatus according to claim 1, which is characterized in that the rear end heat pipe (4) is obliquely installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822144563.4U CN209714720U (en) | 2018-12-20 | 2018-12-20 | It is a kind of to discard UTILIZATION OF VESIDUAL HEAT IN for coal-burning power plant and eliminate the device of chimney white cigarette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822144563.4U CN209714720U (en) | 2018-12-20 | 2018-12-20 | It is a kind of to discard UTILIZATION OF VESIDUAL HEAT IN for coal-burning power plant and eliminate the device of chimney white cigarette |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209714720U true CN209714720U (en) | 2019-12-03 |
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| CN201822144563.4U Active CN209714720U (en) | 2018-12-20 | 2018-12-20 | It is a kind of to discard UTILIZATION OF VESIDUAL HEAT IN for coal-burning power plant and eliminate the device of chimney white cigarette |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109529583A (en) * | 2018-12-20 | 2019-03-29 | 大唐环境产业集团股份有限公司 | UTILIZATION OF VESIDUAL HEAT IN is discarded for coal-burning power plant and eliminates the device and method of chimney white cigarette |
-
2018
- 2018-12-20 CN CN201822144563.4U patent/CN209714720U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109529583A (en) * | 2018-12-20 | 2019-03-29 | 大唐环境产业集团股份有限公司 | UTILIZATION OF VESIDUAL HEAT IN is discarded for coal-burning power plant and eliminates the device and method of chimney white cigarette |
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