CN207933199U - - kind of cascade utilization power-plant flue gas waste heat realizes the device of desulfurization wastewater zero-emission - Google Patents
- kind of cascade utilization power-plant flue gas waste heat realizes the device of desulfurization wastewater zero-emission Download PDFInfo
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- CN207933199U CN207933199U CN201721616310.1U CN201721616310U CN207933199U CN 207933199 U CN207933199 U CN 207933199U CN 201721616310 U CN201721616310 U CN 201721616310U CN 207933199 U CN207933199 U CN 207933199U
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Abstract
The utility model provides-and kind of cascade utilization power-plant flue gas waste heat realizes the device of desulfurization wastewater zero-emission, it include the boiler connected by flue, SCR desulphurizing system of catalytic, air preheater, electric precipitator, concentration systems, wet desulphurization absorption tower, chimney, wet desulphurization absorption tower lower part is also associated with gypsum dehydration system, the desulfurization wastewater of gypsum dehydration system abjection is delivered to concentration systems, the upper and lower part of concentration systems is connected to by connecting pipe, circulating pump is provided on connecting pipe, the concentration systems bottom is connected with medicine system, medicine system lower part sludge is delivered to sludge conveying system, the upper clear supernate of medicine system is delivered to waste water tank.The utility model is simple in structure, and investment and operating cost are low, can be that enterprise brings distinct economic, and has good environment and social benefit.
Description
Technical field
The utility model belongs to field of industrial waste water treatment, and in particular to a kind of to be carried out to desulfurization wastewater using fume afterheat
The processing unit of concentration decrement and atomization and vaporization.
Background technology
Wet limestone-gypsum FGD technique has desulfuration efficiency height, skill as current coal-burning power plant's mainstream desulfurization technology
Art is ripe, it is stable and easy to maintain the advantages that, but in order to maintain the reliable and stable operation of serum recycle system, need periodically to arrange
Put a certain amount of desulfurization wastewater.What in June, 2017 formally came into effect《Thermal power plant's prevention and cure of pollution possible technique guide》Clearly carry
Go out, in addition to desulfurization wastewater, all kinds of waste water can realize the not outer row of " multi-purpose water, cascade utilization ", waste water substantially after processing, realize
The key of waste water near-zero release is to realize desulfurization wastewater zero-emission.But desulfurization wastewater is power plant's terminal waste water, by many factors shadow
It rings, and is influenced greatly with operating mode and coal；PH is weakly acidic between 4.5-6.5, and chloride ion content is high；With gypsum particle, dioxy
SiClx, iron aluminide suspension content as main component is higher, and it is stifled to easily cause film filter dirt；Total dissolved solid contains
Amount is higher, and variation range is big, generally high in the hardness ions such as 30000-60000 mg/L, Ca2+ and Mg2+ content, mercury, lead,
The heavy metal contaminants such as arsenic are exceeded.Currently used conventional physical chemical desulfurization wastewater treatment method, is only capable of removing most
Heavy metal ion, but the stronger chlorion of migration can not be removed.
Desulfurization wastewater for water quality complexity and its reluctant present situation, the China of Patent No. 201710054360.3
Patent discloses a kind of Waste water concentrating system and method evaporated based on fluid column using fume afterheat, and desulfurization wastewater is sprayed with fluid column
The mode penetrated sprays into evaporating column, is concentrated to desulfurization wastewater using the fume afterheat before desulfurizing tower, evaporating column outlet arrangement
To remove the drop in flue gas, desulfurization wastewater concentrated water is discharged demister from system, reaches useless to desulfurization by using fume afterheat
The purpose of water concentration decrement, but this method has aggravated the corrosion of existing flue；The China of Patent No. 201010179796.3 is specially
Profit discloses a kind of spray evaporation treatment method of wet method flue gas desulfurization wastewater in thermal power station, by desulfurization wastewater directly before electric precipitator
Flue internal spraying is evaporated to realize the zero-emission of desulfurization wastewater, but this method will be injected directly into without the desulfurization wastewater of decrement treatment
The corrosion risk of electrostatic precipitator is increased in flue collector before electrostatic precipitator；The China of Patent No. 201510275955.2
Patent discloses a kind of desulfurization wastewater technique of zero discharge and system, is pre-processed using dosing softening and microfiltration membranes, uses
The Disodium sulfate decahydrate of 99% or more purity is precipitated in nanofiltration and reverse osmosis separation, freezing and crystallizing, and 98% purity is precipitated in evaporative crystallization
Sodium chloride, additionally provide it is a kind of can be by the Zero discharging system of desulfurization wastewater reuse, but system is tediously long, and processing step is cumbersome,
Investment and operating cost are higher；The Chinese patent of Patent No. 201611008084.9 discloses a kind of concentration of desulfurization wastewater and cigarette
Gas dries the System and method for of integrated treatment, by desulfurization wastewater after traditional three headers processing, is concentrated using evaporator, after concentration
Water reuse bypass flue flue gas heat complete evaporative crystallization, air-flow is discharged after dedusting from chimney, but this method is directly sharp
Desulfurization wastewater is evaporated with the high-temperature flue gas before air preheater, and follow-up solid-state is evaporated product and is received using cyclone dust collectors
Collect rather than trapped by electrostatic precipitator and be mixed into flying dust, not only increases the energy consumption of desulfurization wastewater evaporation, and its solid-state is steamed
Dry product is also needed due to pollutants such as enriching heavy metals as the processing of dangerous solid waste.Patent No. 201610031262.3
Chinese patent disclose it is a kind of using fume afterheat handle desulfurization wastewater method and device, gypsum dehydration system discharge
Desulfurization wastewater is injected directly into before wet desulphurization absorption tower be transformed by flue collector made of in concentration tower, concentration tower water outlet is fed directly to
Atomization and vaporization is carried out before electrostatic precipitator in flue collector, but the desulfurization wastewater of this method is without three header agent-feeding treatments, in water body
Calcium ions and magnesium ions, heavy metal ion are more, and water quality is poor, not only increase the wind of corrosion and the fouling of flue collector before electrostatic precipitator
Danger, and increase the blocking risk of mechanical atomization or medium atomization mode that it is used.
Desulfurization wastewater is handled by the method for evaporative crystallization, to realize higher point of salt requirement, often energy consumption is higher, warp
Cost of helping is excessively high；And evaporated compared to flue, on the one hand bypass evaporating column brings relatively large investment to power plant, on the other hand
It is brought to the nervous power plant of in-house facility occupation of land and uses ground pressure.But the existing desulfurization wastewater treating capacity of flue evaporation is low and low
The problem of can not being evaporated completely under load, limits the development of desulfurization wastewater flue evaporation technique, and therefore, it is necessary to desulfurization wastewater
It takes first with fume afterheat before desulfurizing tower（90 ~ 120 DEG C or so）Decrement concentration is carried out, utilizes fume afterheat before electric precipitation afterwards
（150 DEG C or so）The treatment technology means that atomization is evaporated are carried out, cascade utilization power-plant flue gas waste heat is reducing the same of power plant's investment
The zero-emission of Shi Shixian desulfurization wastewaters.
Utility model content
It is simple, stable that the purpose of this utility model is to provide a kind of equipment, the desulfurization of Low investment and operating cost
Waste water concentrating is reduced and the device of atomization and vaporization.
The utility model uses following technical scheme：
- kind of cascade utilization power-plant flue gas waste heat realizes the device of desulfurization wastewater zero-emission, includes the pot connected by flue
Stove 1, SCR desulphurizing system of catalytic 2, air preheater 3, electric precipitator 6, concentration systems 7, wet desulphurization absorption tower 8, chimney 9 are wet
8 lower part of method desulfuration absorbing tower is also associated with gypsum dehydration system 10, and the desulfurization wastewater that gypsum dehydration system 10 is deviate from is delivered to dense
The upper and lower part of compression system 7, concentration systems 7 is connected to by connecting pipe, and circulating pump 14, concentration system are provided on connecting pipe
7 bottoms of uniting are connected with medicine system 11, and 11 lower part sludge of medicine system is delivered to sludge conveying system 15, medicine system 11 it is upper
Portion's clear liquid is delivered to waste water tank 12.
II 21 lower part of flue between the air preheater 3 and electric precipitator 6 is provided with atomization system 5, the atomization
The lower part of system 5 connects waste water tank 12；The exhaust pass II 21 of the air preheater 3 and the gas approach I of air preheater 3
Connection bypass induced draught system 4 between 20.
The concentration systems 7 are connected on the flue III 22 between electric precipitator 6 and wet desulphurization absorption tower 8.
The concentration systems 7 are connected in the bypass of the flue III 22 between electric precipitator 6 and wet desulphurization absorption tower 8,
At this point, flue III 22 exports flue gas to concentration systems 7 by inputting bypass flue, concentration systems 7 are connected by exporting bypass flue
Smoke uptake III 22 is provided with baffle 28 between the input bypass flue and flue III 22.
It is provided with water quantity monitoring instrument I 17 in the waste water tank 12, water quantity monitoring instrument is provided in the concentration systems 7
II 19, circulating pump 14, the water quantity monitoring instrument are provided on the connecting pipe of the upper and lower parts of the concentration systems 7 connection
I 17, water quantity monitoring instrument II 19, circulating pump 14 are connect in external monitor terminal 27 with being arranged.
Flue gas Temperature Humidity Sensor 18, the flue gas humiture are provided on the gas approach II 21 of the electric precipitator 18
Sensor 18 is connect in external monitor terminal 27 with being arranged.
The bypass induced draught system 4 includes air inducing pipeline, and the exhaust pass in air preheater 3 is arranged in the air inducing pipeline
Between II 21 and the gas approach I 20 of air preheater 3, smoke flow control valve 16 is provided on the air inducing pipeline, it is described
Smoke flow control valve 16, atomization system 5 are connect in external monitor terminal 27 with being arranged.
The baffle 28 is connect in external monitor terminal 27 with being arranged.
The beneficial effects of the utility model：Desulfurization wastewater concentration tower is arranged in the utility model after electrostatic precipitator, utilizes
Waste heat flue gas is in direct contact with desulfurization wastewater and carries out strong mass-and heat-transfer, achievees the effect that handle desulfurization wastewater minimizing,
Avoid leads to the problem of flue-gas temperature is less than acid dew point in flue collector since desulfurization wastewater flue evaporation capacity is big, enhances de-
The stability of sulphur waste water flue evaporation；High-salt wastewater after concentration tower is chemically treated by three header dosings, removing
The pollutants such as calcium ions and magnesium ions, heavy metal ion are atomized as 20um droplets below and are sent by ultrasonic atomizing system
Flue is evaporated, realizes that the super-fine atomization to desulfurization wastewater, evaporation time greatly shorten using cavitation effect caused by ultrasonic wave, protects
Demonstrate,proved and be evaporated completely in the atomization drop of time-limited low temperature flue, reduce desulfurization wastewater fail to be evaporated completely caused by after
The corrosion risk of continuous electrostatic precipitator；Meanwhile the quickening of evaporation rate also reduces the wind of flue internal solid evaporation product encrustation
Danger；In addition, whole system has air preheater bypass induced draft structure, it is empty by introducing when flue evaporation zone temperature is relatively low
High-temperature flue gas lifting waste water evaporation zone temperature before air preheater accelerates evaporation, ensures the stability of system operation.This practicality is new
Type is simple in structure, and investment and operating cost are low, can be that enterprise brings distinct economic, and is imitated with good environment and society
Benefit.
Description of the drawings
Fig. 1 is the process flow diagram that the utility model carries out flue collector concentration.
Fig. 2 is the monitor terminal connection diagram that the utility model carries out flue collector concentration.
Fig. 3 is the process flow diagram that the utility model carries out bypass concentration.
Fig. 4 is the monitor terminal connection diagram that the utility model carries out bypass concentration.
Wherein, 1- boilers, 2-SCR catalytic denitration systems, 3- air preheaters, 4- bypass induced draught systems, 5- atomization systems,
6- electric precipitators, 7- concentration systems, 8- wet desulphurization absorption towers, 9- chimneys, 10- gypsum dehydration systems, 11- medicine systems, 12-
Waste water tank, 13- waste water pumps, 14- circulating pumps, 15- sludge conveying systems, 16- flow control valves, 17- water quantity monitorings instrument I, 18-
Temperature Humidity Sensor, 19- water quantity monitorings instrument II, 20- flues I, 21- flues II, 22- flues III, 23- aqueducts I, 24-
Aqueduct II, 25- aqueducts III, 26- aqueducts IV, 27- monitor terminals, 28- gas baffle doors, 29- limewash are matched
Set workshop, 30- gypsum.
Specific implementation mode
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
As shown in Figure 1, the utility model, which provides a kind of cascade utilization power-plant flue gas waste heat, realizes desulfurization wastewater zero-emission
Device includes boiler 1, SCR desulphurizing system of catalytic 2, air preheater 3, electric precipitator 6, the concentration systems connected by flue
7, wet desulphurization absorption tower 8, chimney 9, are connected between SCR desulphurizing system of catalytic 2 and air preheater 3 by flue I 20, empty
It is connected to by flue II 21 between air preheater 3 and electric precipitator 6, passes through cigarette between electric precipitator 6 and wet desulphurization absorption tower 8
Road III 22 is connected to, and concentration systems 7 are connected to flue III 22.
Gypsum dehydration system 10 is connected in 8 lower part of wet desulphurization absorption tower, the slurries that wet desulphurization absorption tower 8 is discharged pass through
Gypsum dehydration system 10 processing after, 30 discharge system of output gypsum, and deviate from desulfurization wastewater entered by aqueduct I it is dense
Compression system 7 carries out hot method decrement concentration, and the desulfurization wastewater concentrated water excluded from 7 bottom of concentration systems is sent by aqueduct II to dense
The medicine system 11 of 7 bottom of compression system connection is chemically treated, and the sludge of 11 outputs of medicine system is from medicine system 11
The sludge conveying system 15 of bottom connection excludes, and the wastewater supernatant fluid of 11 upper layer output of medicine system is sent by aqueduct III
To waste water tank 12 into row buffering, store.8 top of wet desulphurization absorption tower is also connected with limewash configuration workshop 29.
Three header medicine systems can be used in the medicine system 11, and sludge conveying system 15 is then defeated including at least sludge
Send pipeline and sludge tree waggon.
It is provided with connecting pipe between the upper and lower part of above-mentioned concentration systems 7, circulating pump 14 is set on connecting pipe,
The liquid pump of 7 lower part of concentration systems to top is carried out multiple concentration by circulating pump 14, to improve thickening efficiency, reduces liquid
Amount, i.e., for by the supernatant liquor in concentration systems 7 carry out cycle decrement concentration, and pass through control loop pump 14 operation ginseng
Number realizes that Waste water concentrating decrement is controllable.
In order to achieve the purpose that desulfurization wastewater zero-emission, the utility model also set up atomization system 5, atomization system 5 includes
Device for carrying out liquid atomization, such as piezoelectric ceramic piece, which is arranged in the lower part of flue II 21, with flue II
21 connections.The lower part of the atomization system 5 connects waste water tank 12 by aqueduct IV, and waste water pump 13 is arranged on aqueduct IV,
For atomization and vaporization processing will to be carried out in the waste water pump inside waste water tank 12 to atomization system 5.
Specifically, the desulfurization wastewater stored in waste water tank 12, to atomization system 5, is passed through by 13 pressurized delivered of waste water pump
To piezoelectric material（Including piezoelectric ceramic piece etc.）Applying alternating electric field makes it generate ultrasonic wave, and conduction is to desulfurization wastewater liquid level and draws
The cavitation of desulfurization wastewater is played, generation 20um fine mists below, which enter with flue gas in flue 21, evaporates, solid product（Dry state salt
Deng）It is trapped by follow-up electric precipitator 6, gaseous products（Vapor etc.）It is mixed into flue gas and enters follow-up equipment.
Further include the gas approach I of the exhaust pass II 21 and air preheater 3 in air preheater 3 as the utility model
The bypass induced draught system 4 connected between 20, the bypass induced draught system 4 include air inducing pipeline, and the preceding termination air of air inducing pipeline is pre-
3 gas approach I 20 of hot device, rear to terminate 3 exhaust pass II 21 of air preheater, air inducing pipeline is equipped with smoke flow control valve
16。
Above-mentioned air inducing pipeline is used to the hot gas of 3 gas approach I 20 of air preheater being introduced into air preheater 3
Exhaust pass II 21.When the air that the flue gas Temperature Humidity Sensor 18 being arranged on the gas approach II 21 of electric precipitator 6 measures
When 3 rear end flue-gas temperature of preheater is relatively low to be caused atomization system not to be evaporated completely, Temperature Humidity Sensor 18 is caused to be alarmed, pass through
The unlatching for controlling the smoke flow control valve 16 being arranged on air inducing pipeline introduces the high temperature of 3 preceding 300 ° ~ 350 ° of air preheater
Flue gas is formed about local high temperature zone to flue II 21, in nebulization region, and high temperature evaporation area is provided for atomization system 5, accelerates to steam
Hair, ensures the stability of system operation.
The utility model is externally provided with monitor terminal 27, and monitor terminal 27 may include server and man-machine with server communication
Interactive terminal.Monitor terminal 27 is controlled with above-mentioned waste water pump 13, circulating pump 14, flue gas Temperature Humidity Sensor 18, flue gas flow
Valve 16, atomization system 5 connect, and can be regulated and controled to pump by human-computer interaction terminal.
And detect online water quality, the water quantity monitoring instrument I of water at this point, being provided in the waste water tank 12 of the utility model
17, the online water quality of detection, the water quantity monitoring instrument II 19 of water, water quantity monitoring instrument I 17, water are provided in concentration systems 7
Measuring instrument II 19 is connect with the server for being arranged in external monitor terminal 27.
Monitor terminal 27 obtains water quantity monitoring instrument I 17, water quantity monitoring instrument II 19, flue gas Temperature Humidity Sensor 18 and measures
Data after, by the way that water threshold value, temperature threshold, humidity threshold is arranged to waste water pump 13, circulating pump 14, atomization in monitor terminal
System 5 carries out closed-loop control.
According to the difference of concentration systems and the connection relation of flue III 22, the concentration systems 7 of the utility model divide for main cigarette
Road concentrates（As depicted in figs. 1 and 2）It is concentrated with bypass flue（As shown in Figure 3 and Figure 4）.
（1）Flue collector concentrates
As depicted in figs. 1 and 2, at this point, concentration systems 7 are connected to the cigarette between electric precipitator 6 and wet desulphurization absorption tower 8
On road III 22.
At this point, whole flue gases of flue III 22 are concentrated by concentration systems 7, entered by the flue gas of concentration systems
It is reacted in wet desulphurization absorption tower 8.
（2）Bypass flue concentrates
As shown in Figure 3 and Figure 4, when in order to enhance the stability of flue collector system or on existing power plant's flue carry out desulfurization
When useless hydro-thermal method concentration transformation, bypass conc forms can be used to concentrate desulfurization wastewater.It is removed at this point, concentration systems 7 are connected to electricity
In the bypass of flue III 22 between dirt device 6 and wet desulphurization absorption tower 8.At this point, flue III 22 is defeated by inputting bypass flue
Go out flue gas to concentration systems 7, concentration systems 7 are connected to flue III 22, input bypass flue and flue III by exporting bypass flue
Baffle 28 is provided between 22.
As shown in figure 3, desulfurization wastewater concentration systems 7 are changed to bypass concentration by flue collector concentration, by utilizing full exhaust gas volumn
Concentration is changed to concentrate using partial fume amount, controls 7 import flue gas pressures of concentration systems by gas baffle 28, prevents it from being led
Flue 22 is short-circuit and can not introduce flue gas.The flue gas entered in wet desulphurization absorption tower 8 is the cigarette that concentration systems 7 are passed through in part
Gas.
As shown in Fig. 4, arrange gas baffle 28 to adjust the flue gas flow in concentration systems 7 in flue 22.
The device of the utility model carries out cascade utilization power-plant flue gas waste heat and realizes the specific of desulfurization wastewater zero discharge treatment
Process is：
Flue gas in boiler 1 enters SCR catalytic denitrations system 2 by flue, treated flue gas by flue I 20 into
Enter to air preheater 3, air preheater 3, electric precipitator 6, concentration systems 7, wet desulphurization absorption tower 8 and chimney 9 are successively
Connection, 8 bottom of wet desulphurization absorption tower connect gypsum dehydration system 10, and the desulfurization wastewater of 10 outputs of gypsum dehydration system passes through
Aqueduct I 23 is conveyed to concentration systems 7 and is in direct contact carry out mass-and heat-transfer with flue gas, reduces flue gas temperature before desulfuration absorbing tower 8
It spends while increasing smoke moisture, thus can synchronize and increase desulfuration absorbing tower 8 to SO2Absorption efficiency and reduce desulfuration absorbing tower 8
Moisturizing.Concentration systems 7, which synchronize, is equipped with circulating pump 14 to regulate and control the concentration situation of desulfurization wastewater, is discharged from 7 bottom of concentration systems
Desulfurization wastewater concentrated water be delivered to three header medicine systems 11 by aqueduct 24 and be chemically treated, removing calcium ions and magnesium ions and
Heavy metal ion etc., generated sludge are discharged by sludge conveying system 15, and generated wastewater supernatant fluid is by defeated
Waterpipe 25 send to waste water tank 12 and stores, and the waste water stored in waste water tank 12 is pressurizeed by waste water pump 13, by aqueduct 26
It send to atomization system 5 and is atomized, atomized drop enters flue collector and carries out mass-and heat-transfer process, dissolubility salinity in desulfurization wastewater
Enter flue gas as fine particle with the evaporation of waste water and be captured in follow-up electric precipitator 6, moisture is then with the shape of vapor
Formula enters follow-up equipment with flue gas.At the same time whole system is equipped with bypass induced draught system 4, and preceding termination air preheater 3 enters
Mouthful flue 20, it is rear to terminate 3 exhaust pass 21 of air preheater, and be equipped with flow control valve 16, when in flue 21 flue-gas temperature compared with
When low, by the part high-temperature flue gas being introduced into before air preheater 3 in flue collector 20, high temperature evaporation area is provided for atomization system 5,
Ensure the stability of system operation.
In order to ensure the stable of electric precipitator 6, the flue gas Temperature Humidity Sensor 18 at 6 leading inlet of electric precipitator is supervised
The temperature and humidity for surveying the flue gas of import passes through prison when the flue gas acid dew point that flue-gas temperature is arranged close to inside monitor terminal
Control terminal adjusts the smoke flow control valve 16 of bypass induced draught system 4 to accelerate the evaporation rate of desulfurization wastewater, by adjusting mist
Change system 5 and waste water pump 13 reduce the atomization water of desulfurization wastewater, avoid smoke condensation, are caused to flue and electric precipitator 6
Corrosion.
The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or use this practicality new
Type.A variety of modifications of embodiment will be apparent to those skilled in the art, institute in the utility model
The General Principle of definition can be realized in other embodiments without departing from the spirit or scope of the present utility model.
Therefore, the utility model is not intended to be limited to these embodiments shown in this article, and is to fit to and the utility model institute
Principle disclosed and the consistent widest range of feature.
Claims (8)
- Include the boiler connected by flue 1. a kind of cascade utilization power-plant flue gas waste heat realizes the device of desulfurization wastewater zero-emission （1）, SCR desulphurizing system of catalytic（2）, air preheater（3）, electric precipitator（6）, concentration systems（7）, wet desulphurization absorption tower （8）, chimney（9）, it is characterised in that：The wet desulphurization absorption tower（8）Lower part is also associated with gypsum dehydration system（10）, described Gypsum dehydration system（10）The desulfurization wastewater of abjection is delivered to concentration systems（7）, concentration systems（7）Upper and lower part pass through company It threads a pipe connection, circulating pump is provided on connecting pipe（14）, the concentration systems（7）Bottom is connected with medicine system（11）, Medicine system（11）Lower part sludge is delivered to sludge conveying system（15）, medicine system（11）Upper clear supernate be delivered to waste water tank （12）.
- 2. according to claim 1-kind of cascade utilization power-plant flue gas waste heat realizes the device of desulfurization wastewater zero-emission, It is characterized in that：The air preheater（3）And electric precipitator（6）Between flue II（21）Lower part is provided with atomization system（5）, The atomization system（5）Lower part connect waste water tank（12）；The air preheater（3）The flue II of outlet（21）It is pre- with air Hot device（3）Gas approach I（20）Between connection bypass induced draught system（4）.
- 3. according to claim 1-kind of cascade utilization power-plant flue gas waste heat realizes the device of desulfurization wastewater zero-emission, It is characterized in that：The concentration systems（7）It is connected to electric precipitator（6）And wet desulphurization absorption tower（8）Between flue III（22） On.
- 4. according to claim 1-kind of cascade utilization power-plant flue gas waste heat realizes the device of desulfurization wastewater zero-emission, It is characterized in that：The concentration systems（7）It is connected to electric precipitator（6）And wet desulphurization absorption tower（8）Between flue III（22） Bypass on, at this point, flue III（22）Flue gas is exported to concentration systems by inputting bypass flue（7）, concentration systems（7）Pass through It exports bypass flue and is connected to flue III（22）, the input bypass flue and flue III（22）Between be provided with baffle（28）.
- 5. according to claim 1-kind of cascade utilization power-plant flue gas waste heat realizes the device of desulfurization wastewater zero-emission, It is characterized in that：The waste water tank（12）Inside it is provided with water quantity monitoring instrument I（17）, the concentration systems（7）Inside it is provided with water Measuring instrument II（19）, the concentration systems（7）Upper and lower part connection connecting pipe on be provided with circulating pump（14）, institute State water quantity monitoring instrument I（17）, water quantity monitoring instrument II（19）, circulating pump（14）Be arranged in external monitor terminal（27） Connection.
- 6. according to claim 1-kind of cascade utilization power-plant flue gas waste heat realizes the device of desulfurization wastewater zero-emission, It is characterized in that：The electric precipitator（6）The flue II of entrance（21）On be provided with flue gas Temperature Humidity Sensor（18）, the flue gas Temperature Humidity Sensor（18）Be arranged in external monitor terminal（27）Connection.
- 7. according to claim 2-kind of cascade utilization power-plant flue gas waste heat realizes the device of desulfurization wastewater zero-emission, It is characterized in that：The bypass induced draught system（4）Including air inducing pipeline, the air inducing pipeline is arranged in air preheater（3）Outlet Flue II（21）And air preheater（3）Gas approach I（20）Between, flue gas flow control is provided on the air inducing pipeline Valve processed（16）, the smoke flow control valve（16）, atomization system（5）Be arranged in external monitor terminal（27）Connection.
- 8. according to claim 4-kind of cascade utilization power-plant flue gas waste heat realizes the device of desulfurization wastewater zero-emission, It is characterized in that：The baffle（28）Be arranged in external monitor terminal（27）Connection.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107739119A (en) * | 2017-11-28 | 2018-02-27 | 华电郑州机械设计研究院有限公司 | - kind of cascade utilization power-plant flue gas waste heat realizes the device of desulfurization wastewater zero-emission |
| CN111928286A (en) * | 2020-08-14 | 2020-11-13 | 西安热工研究院有限公司 | Desulfurization wastewater zero-discharge treatment method and system suitable for multiple working conditions |
-
2017
- 2017-11-28 CN CN201721616310.1U patent/CN207933199U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107739119A (en) * | 2017-11-28 | 2018-02-27 | 华电郑州机械设计研究院有限公司 | - kind of cascade utilization power-plant flue gas waste heat realizes the device of desulfurization wastewater zero-emission |
| CN111928286A (en) * | 2020-08-14 | 2020-11-13 | 西安热工研究院有限公司 | Desulfurization wastewater zero-discharge treatment method and system suitable for multiple working conditions |
| CN111928286B (en) * | 2020-08-14 | 2021-09-14 | 西安热工研究院有限公司 | Desulfurization wastewater zero-discharge treatment method and system suitable for multiple working conditions |
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