CN109850968A - A kind of waste water spray evaporator ash-transmission system and method - Google Patents
A kind of waste water spray evaporator ash-transmission system and method Download PDFInfo
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- CN109850968A CN109850968A CN201910069291.2A CN201910069291A CN109850968A CN 109850968 A CN109850968 A CN 109850968A CN 201910069291 A CN201910069291 A CN 201910069291A CN 109850968 A CN109850968 A CN 109850968A
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Abstract
The invention discloses a kind of waste water spray evaporator ash-transmission system and methods, the side of the side of evaporator, the side of ash bucket and ash storage box is provided with ash sample sample tap, exhanst gas outlet pipeline is connected with the exhanst gas outlet of evaporator side, the outlet of base of evaporator is connected with the entrance at the top of ash bucket, the outlet of hopper bottom is connected with the entrance at the top of ash storage box, the first valve of outlet of ash storage box bottom is connected with the entrance in grey library, the outlet of ash storage box side is connected with the entrance of flour mill, and the outlet of flour mill is connected with the entrance in grey library；On the side wall of evaporator, on the side wall of ash bucket and if the center position of ash bucket is provided with dry temperature sensor, the output end of each temperature sensor is connected with the input terminal of controller, the output end of controller is connected with the control terminal of the control terminal of the first valve and flour mill, the system and method can guarantee that evaporator works normally, and can effectively solve the problem that the problem of fouling is blocked in ash bucket.
Description
Technical field
The invention belongs to field of waste water treatment, it is related to a kind of waste water spray evaporator ash-transmission system and method.
Background technique
With the increasingly promotion of national environmental protection pressure, the tail gas of coal-burning boiler has to pass through the fume treatments such as desulphurization and denitration.
The desulfurization wastewater especially generated in slurry pool of absorption tower in wet desulfurizing process is difficult to handle；Newest desulfurization wastewater handles work
Skill is that desulfurization wastewater is sufficiently atomized into micron order drop to spray into outside flue in evaporator, with extraction high temperature cigarette before boiler air preheater
Gas mixing, is evaporated droplet using the temperature of flue gas, and salinity with flue gas ash content mixes recycling in waste water in last evaporation process.
One of difficult point of technique is that can waste water and flue gas be fully crystallized in evaporation process in evaporator, to avoid
The problems such as fouling, corrosion, occurs, and generation salinity sufficiently can mix and be delivered to grey library with ash in evaporation process, thus
Achieve the purpose that the ashy substance of spraying generation can comprehensively utilize, evaporation process waste water is avoided to generate solid waste even dangerous waste object
Matter reduces cost for wastewater treatment.
In order to guarantee that atomized drop can gasify sufficiently in a short time during spray evaporation, this atomization to spray gun
Performance requirement is very high；Not only atomizing particle wants sufficiently small, but also wants to be sufficiently mixed with flue gas, when temperature field and flow field are unstable
Periodically, it is easy to which appearance is not exclusively evaporated, to cause adherent fouling and temperature change phenomenon can when change of size is larger
Larger particles ash sample can be formed, can not be taken away in time with flue gas or is enriched with blocking in base of evaporator, not so as to cause evaporator
It can work normally.
Summary of the invention
It is an object of the invention to overcome the above-mentioned prior art, a kind of defeated ash system of waste water spray evaporator is provided
System and method, which can guarantee that evaporator works normally, and can effectively solve the problem that and block fouling in ash bucket
Problem.
In order to achieve the above objectives, waste water spray evaporator ash-transmission system of the present invention includes evaporator, ash bucket, flue gas
Outlet conduit, ash storage box, the first valve, the second valve, Hui Ku, flour mill and controller；
The side of the side of evaporator, the side of ash bucket and ash storage box is provided with ash sample sample tap, exhanst gas outlet pipeline
It is connected with the exhanst gas outlet of evaporator side, the outlet of base of evaporator is connected with the entrance at the top of ash bucket, hopper bottom
Outlet be connected with the entrance at the top of ash storage box, the outlet of ash storage box side is connected with the entrance of flour mill, ash storage box bottom
The outlet in portion is connected with first valve one end, and the outlet of flour mill is connected with one end of the second valve, the first valve it is another
Converge the rear entrance with grey library with the other end of the second valve and be connected in one end；
On the side wall of evaporator, on the side wall of ash bucket and the center position of ash bucket is provided with several temperature sensing
Device, the output end of each temperature sensor are connected with the input terminal of controller, the control of the output end of controller and the first valve
The control terminal at end, the second valve and flour mill is connected.
It is provided with vibration rotation in ash bucket and scrapes apparatus for ash, wherein the vibration rotation scrapes apparatus for ash and includes first motor, connects
Spindle and several rotation flexible blades being set in connecting shaft, the end for rotating flexible blades connects with the inner wall of ash bucket
Touching, wherein the output shaft of first motor is connected with connecting shaft, and the control terminal of first motor is connected with controller.
First valve is connected through pneumatic ash transmitting system with Hui Ku after converging with the second valve.
Electric heater unit is provided on the side wall of ash bucket, the control terminal of electric heater unit is connected with controller.
It further include the droplet measurement device for detecting ash content partial size, wherein droplet measurement device and ash sample sample tap phase
Connection.
It is connected between the outlet of ash storage box side and the entrance of flour mill by screw(-type) feeder.
The defeated grey method of waste water spray evaporator of the present invention the following steps are included:
Hot fume and desulfurization wastewater enter in evaporator, and are mixed in evaporator, so that desulfurization wastewater is warm
For smoke evaporative at water vapour, the crystal salt in desulfurization wastewater then mixes the ash content for generating unequigranular with the flying dust in flue gas,
In, the ash content of lighter weight then follows flue gas to be expelled directly out evaporator through exhanst gas outlet pipeline, and the ash content of heavier mass then enters
Into ash bucket；
Temperature sensor real-time detection ash bucket side wall different location and the temperature information of ash bucket center, when ash bucket side wall
When the temperature change of different location or the temperature change of ash bucket center exceed preset range, then it is assumed that ash bucket wall surface accumulates
Grey and hardened phenomenon then closes the first valve, opens rotation and scrapes apparatus for ash, by rotation flexible blades that ash bucket wall surface is hardened
Ash content loosen, strike off, fall to it smoothly in ash storage box, while opening flour mill, the ash content in ash storage box is through flour mill
It is entered after grinding in grey library；
When the temperature change of ash bucket side wall different location and the temperature change of ash bucket center are without departing from preset range
When, then the first valve is opened, flour mill is closed, the ash content in ash bucket enters in grey library through ash storage box.
The invention has the following advantages:
Waste water spray evaporator ash-transmission system of the present invention and method pass through temperature sensor reality when specific operation
When detection ash bucket side wall different location and ash bucket center temperature information, when ash bucket side wall different location or ash bucket centre bit
When the temperature information set occurs abnormal, then it is assumed that there is dust stratification and hardened phenomenon in ash bucket wall surface, at this point, the first valve is closed,
It opens rotation and scrapes apparatus for ash, hardened ash content is loosened by rotation flexible blades, is struck off, it is made smoothly to fall to ash storage box
In, while flour mill is opened, it is sent into after being ground by flour mill to the ash content in ash storage box in grey library, to effectively solve
The problem of fouling is certainly blocked in ash bucket, guarantees that the ash content in evaporator can follow in time flue gas to take away or enter in ash bucket,
To guarantee that evaporator works normally, structure is simple, and easy to operate, practicability is stronger.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Wherein, 1 be evaporator, 2 be ash bucket, 3 be ash storage box, 4 be flour mill, 5 be electric heater unit, 6 be first motor,
7 it is ash sample sample tap, 8 be temperature sensor, 9 be exhanst gas outlet pipeline, 10 be pneumatic ash transmitting system, 11 be grey library, 12 is rotation
Turn flexible blades, 13 be the first valve, 14 be the second valve, 15 be the second motor.
Specific embodiment
The invention will be described in further detail with reference to the accompanying drawing:
With reference to Fig. 1, waste water spray evaporator ash-transmission system of the present invention includes evaporator 1, ash bucket 2, exhanst gas outlet
Pipeline 9, ash storage box 3, the first valve 13, the second valve 14, grey library 11, flour mill 4 and controller；The side of evaporator 1, ash bucket
2 side and the side of ash storage box 3 are provided with ash sample sample tap 7, and exhanst gas outlet pipeline 9 and the flue gas of 1 side of evaporator go out
Mouth is connected, and the outlet of 1 bottom of evaporator is connected with the entrance at 2 top of ash bucket, and the outlet of 2 bottom of ash bucket and ash storage box 3 push up
The entrance in portion is connected, and the outlet of 3 side of ash storage box is connected the outlet and first of 3 bottom of ash storage box with the entrance of flour mill 4
One end of valve 13 is connected, and the outlet of flour mill 4 is connected with one end of the second valve 14, the other end of the first valve 13 with
The other end of second valve 14 converges the rear entrance with grey library 11 and is connected；On the side wall of evaporator 1, on the side wall of ash bucket 2 with
And if the center position of ash bucket 2 is provided with dry temperature sensor 8, the output end of each temperature sensor 8 and controller it is defeated
Enter end to be connected, the output end of controller is connected with the control terminal of the control terminal of the first valve 13, the second valve 14 and flour mill 4
It connects.In addition, the invention also includes the droplet measurement devices for detecting ash content partial size, wherein droplet measurement device takes with ash sample
Sample mouth 7 is connected.
Be provided with vibration rotation in ash bucket 2 and scrape apparatus for ash, wherein the vibration rotate scrape apparatus for ash include first motor 6,
Connecting shaft and several rotation flexible blades 12 being set in connecting shaft, wherein the output shaft of first motor 6 and connecting shaft phase
Connection, the control terminal of first motor 6 are connected with controller.
First valve 13 and the second valve 14 are connected through pneumatic ash transmitting system 10 with grey library 11 after converging；The side of ash bucket 2
Electric heater unit 5 is provided on wall, the control terminal of electric heater unit 5 is connected with controller；The outlet of 3 side of ash storage box and mill
It is connected between the entrance of powder machine 4 by screw(-type) feeder；The second motor for driving its work is provided on flour mill 4
15。
The defeated grey method of waste water spray evaporator of the present invention the following steps are included:
Hot fume (350 DEG C or so) and desulfurization wastewater enter in evaporator 1, and are mixed in evaporator 1, so that
Desulfurization wastewater flashes to water vapour by hot fume, and the crystal salt in desulfurization wastewater, which is then mixed with the flying dust in flue gas, generates partial size not
Deng ash content, wherein the ash content of lighter weight then follows flue gas to be expelled directly out evaporator 1 through exhanst gas outlet pipeline 9, heavier mass
Ash content then enter in ash bucket 2；
8 real-time detection ash bucket of temperature sensor, 2 side wall different location and the temperature information of 2 center of ash bucket, when ash bucket 2
When the temperature change of 2 center of temperature change or ash bucket of side wall different location exceeds preset range, then it is assumed that 2 wall surface of ash bucket
There is dust stratification and hardened phenomenon, then close the first valve 13, opens rotation and scrape apparatus for ash, it will be grey by rotation flexible blades 12
The hardened ash content of 2 wall surfaces that struggle against is loosened, is struck off, and falls to it smoothly in ash storage box 3, while opening flour mill 4, in ash storage box 3
Ash content entered after flour mill 4 is ground in grey library 11, guarantee the comprehensive utilization for not influencing ash when entering grey library 11；
When the temperature change of 2 center of temperature change and ash bucket of 2 side wall different location of ash bucket is without departing from default model
When enclosing, then the first valve 13 is opened, close flour mill 4, the ash content in ash bucket 2 enters in grey library 11 through ash storage box 3.
In addition, at work, the side of the side of evaporator 1, the side of ash bucket 2 and ash storage box 3 is provided with ash sample and takes
Sample mouth 7 obtains ash sample by ash sample sample tap 7, the partial size of ash sample is then detected by droplet measurement device, when the partial size of ash sample
When beyond predetermined size range, while it can consider that hardened phenomenon occurs dust stratification and in 2 wall surface of ash bucket.
Claims (7)
1. a kind of waste water spray evaporator ash-transmission system, which is characterized in that including evaporator (1), ash bucket (2), smoke outlet tube
Road (9), ash storage box (3), the first valve (13), the second valve (14), grey library (11), flour mill (4) and controller；
The side of the side of evaporator (1), the side of ash bucket (2) and ash storage box (3) is provided with ash sample sample tap (7), flue gas
Outlet conduit (9) is connected with the exhanst gas outlet of evaporator (1) side, at the top of the outlet and ash bucket (2) of evaporator (1) bottom
Entrance is connected, and the outlet of ash bucket (2) bottom is connected with the entrance at the top of ash storage box (3), the outlet of ash storage box (3) side with
The entrance of flour mill (4) is connected, and the outlet of ash storage box (3) bottom is connected with one end of the first valve (13), flour mill (4)
Outlet be connected with one end of the second valve (14), the other end of the other end of the first valve (13) and the second valve (14) converges
It is connected after conjunction with the entrance of grey library (11)；
On the side wall of evaporator (1), on the side wall of ash bucket (2) and the center position of ash bucket (2) is provided with several temperature
The output end of sensor (8), each temperature sensor (8) is connected with the input terminal of controller, the output end of controller and first
The control terminal of the control terminal of valve (13), the second valve (14) and flour mill (4) is connected.
2. waste water spray evaporator ash-transmission system according to claim 1, which is characterized in that be provided with shake in ash bucket (2)
Apparatus for ash is scraped in dynamic rotation, wherein the vibration rotation scrapes apparatus for ash and includes first motor (6), connecting shaft and be set to connection
Several rotation flexible blades (12) on axis, wherein the output shaft of first motor (6) is connected with connecting shaft, first motor (6)
Control terminal be connected with controller.
3. waste water spray evaporator ash-transmission system according to claim 1, which is characterized in that the first valve (13) and second
Valve (14) is connected through pneumatic ash transmitting system (10) with grey library (11) after converging.
4. 1 ash-transmission system of waste water spray evaporator according to claim 1, which is characterized in that set on the side wall of ash bucket (2)
It is equipped with electric heater unit (5), the control terminal of electric heater unit (5) is connected with controller.
5. waste water spray evaporator ash-transmission system according to claim 1, which is characterized in that further include for detecting ash content
The droplet measurement device of partial size, wherein droplet measurement device is connected with ash sample sample tap (7).
6. waste water spray evaporator ash-transmission system according to claim 1, which is characterized in that ash storage box (3) side goes out
Mouth is connected between the entrance of flour mill (4) by screw(-type) feeder.
7. a kind of defeated grey method of waste water spray evaporator, which is characterized in that be based on waste water spray evaporator as claimed in claim 2
Ash-transmission system, comprising the following steps:
Hot fume and desulfurization wastewater enter in evaporator (1), and are mixed in evaporator (1), so that desulfurization wastewater quilt
Hot fume flashes to water vapour, and the crystal salt in desulfurization wastewater then mixes the ash content for generating unequigranular with the flying dust in flue gas,
Wherein, the ash content of lighter weight then follows flue gas to be expelled directly out evaporator (1), the ash of heavier mass through exhanst gas outlet pipeline (9)
Divide and then enters in ash bucket (2)；
Temperature sensor (8) real-time detection ash bucket (2) side wall different location and the temperature information of ash bucket (2) center, work as ash
When the temperature change of (2) side wall different location that struggles against or the temperature change of ash bucket (2) center exceed preset range, then it is assumed that ash
There is dust stratification and hardened phenomenon in bucket (2) wall surface, then closes the first valve (13), opens rotation and scrapes apparatus for ash, soft by rotating
Property scraping blade (12) the hardened ash content of ash bucket (2) wall surface is loosened, is struck off, fall to it smoothly in ash storage box (3), open simultaneously
Flour mill (4), the ash content in ash storage box (3) enter in Hui Ku (11) after flour mill (4) is ground；
When the temperature change of ash bucket (2) side wall different location and the temperature change of ash bucket (2) center are without departing from default model
It when enclosing, then opens the first valve (13), closes flour mill (4), the ash content in ash bucket (2) enters Hui Ku through ash storage box (3)
(11) in.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113292124A (en) * | 2021-06-07 | 2021-08-24 | 浙江天地环保科技股份有限公司 | Ash conveying device and method based on spray drying tower wastewater evaporation treatment technology |
| CN113559681A (en) * | 2021-07-16 | 2021-10-29 | 浙江浙能台州第二发电有限责任公司 | Monitoring control system and method for reducing wet ash wall adhesion of waste water flue gas drying tower |
| CN114988119A (en) * | 2022-06-15 | 2022-09-02 | 西安西热水务环保有限公司 | Pneumatic conveying system and method suitable for evaporating high-salinity ash from desulfurization wastewater bypass flue gas of thermal power plant |
| CN117886386A (en) * | 2024-03-14 | 2024-04-16 | 南京依涛环保科技有限公司 | Single-fluid spray evaporation system for drying desulfurization wastewater concentrated solution |
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