CN109455867A - A kind of flexibly adjustable thermal power plant's full load high-salinity wastewater zero-emission system and method - Google Patents
A kind of flexibly adjustable thermal power plant's full load high-salinity wastewater zero-emission system and method Download PDFInfo
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- CN109455867A CN109455867A CN201811626592.2A CN201811626592A CN109455867A CN 109455867 A CN109455867 A CN 109455867A CN 201811626592 A CN201811626592 A CN 201811626592A CN 109455867 A CN109455867 A CN 109455867A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
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Abstract
The present invention relates to a kind of flexibly adjustable thermal power plant's full load high-salinity wastewater zero-emission system and method, belong to thermal power generation environment protection field.The full load high-salinity wastewater zero-emission system, including flue duct bypass subsystem and waste water subsystem, the flue duct bypass subsystem include bypass flue A and bypass flue B；Wherein, the flue collector before the entrance connection air preheater of the bypass flue A, the outlet of the bypass flue A connects the flue collector after air preheater.The bypass flue A is equipped with evaporating column.The entrance of the bypass flue B connects the flue collector before the economizer, and the outlet of the bypass flue B connects the bypass flue A.The waste water subsystem includes passing through the sequentially connected conditioning tank of waste water bypass duct, melded system and film concentration systems.The present invention can be according to unit load flexible modulation flue gas flow and temperature, while flexible modulation wastewater treatment process utilizes high-temperature flue gas waste heat to realize the zero-emission of power plant's high-salt wastewater.
Description
Technical field
The present invention relates to a kind of flexibly adjustable thermal power plant's full load high-salinity wastewater zero-emission system and method, which can
According to unit load flexible modulation flue gas flow and temperature, while flexible modulation wastewater treatment process, utilize high-temperature flue gas waste heat
The zero-emission for realizing power plant's high-salt wastewater, belongs to thermal power generation environment protection field.
Background technique
Thermal power plant can generate a large amount of high-salt wastewaters (such as desulfurization wastewater and circulating sewage during the production and operation
Deng), this waste water suspension and salt content are high, and water-quality constituents is extremely complex, often contain detection device for multi metallic elements, if directly
Discharge can cause receiving water body seriously to pollute.In recent years, the control increasingly stringent to industrial wastewater discharge with country, firepower
The zero-emission of power plant high-salt wastewater becomes the hot spot of power industry concern.In many zero-discharge technologies, by high-temperature flue
Road evaporation technique process flow is simple, and investment is low with operating cost, becomes and realizes the main of thermal power plant's high-salinity wastewater zero-emission
One of technology.The technology is drawn high-temperature flue gas from the flue collector before air preheater and is entered by the way that the evaporating column in parallel with air preheater is arranged
Waste water is introduced the rotary atomizer of tower top, uses high-speed rotating mode that waste water is atomized as fine droplet, utilize cigarette by tower body
The waste heat that gas carries evaporates waste water, and the solid matter of generation finally returns to flue collector with flue gas and captured by deduster.Unit exists
Under normal duty, the flue-gas temperature before air preheater may be up to 320 DEG C or more, and only need to extract a small amount of flue gas can be such that waste water is evaporating
It is evaporated rapidly in tower.However, flue-gas temperature before air preheater can drop to 250-300 DEG C, partial moisture when unit load is lower
It can be wrapped up by salt crust in evaporation process, it is difficult to be quickly evaporated, the normal operation of subsequent air flue equipment can be brought in tower
Risk, wastewater zero discharge system will have to out of service when situation is serious.
Summary of the invention
In view of the above-mentioned problems, the present invention provide it is a kind of flexibly adjustable thermal power plant's full load high-salinity wastewater zero-emission system and
Method, the system can be according to unit load flexible modulation flue gas flow and temperature, while flexible modulation wastewater treatment process utilizes
The zero-emission of high-temperature flue gas waste heat realization power plant's high-salt wastewater.
In order to achieve the above object, the specific technical solution that the present invention uses is:
A kind of flexibly adjustable thermal power plant's full load high-salinity wastewater zero-emission system, including it is sequentially connected by flue collector
Economizer, SCR denitration device, air preheater and deduster further include flue duct bypass subsystem and waste water subsystem；
The flue duct bypass subsystem includes bypass flue A and bypass flue B；Wherein, the entrance of the bypass flue A connects
The flue collector between SCR denitration device and air preheater is connect, between the outlet connection air preheater and deduster of the bypass flue A
Flue collector；The bypass flue A is equipped with evaporating column, and the inner tip of the evaporating column is equipped with flue gas flow guide system and rotation mist
Change device, the flue gas flow guide system is communicated with the bypass flue A, and the bottom sides of the evaporating column are equipped with exhanst gas outlet, institute
Exhanst gas outlet is stated to communicate with the bypass flue A；Removing ash pipeline is connected immediately below the bottom of the evaporating column；The bypass flue
The entrance of B connects the flue collector before the economizer, and the outlet of the bypass flue B connects the bypass flue A；
The waste water subsystem includes conditioning tank, melded system and film concentration systems；Wherein, the entrance of the conditioning tank connects
Waste water main pipeline is connect, the first outlet of the conditioning tank connects rotary atomizer by waste water main pipeline；The of the conditioning tank
Two outlets connect the entrance of the melded system by waste water bypass duct, and the outlet of the melded system passes through waste water shunt valve
The outlet of the entrance of road junctional membrane concentration systems, the film concentration systems is connected to the conditioning tank by waste water bypass duct
On waste water main pipeline between first outlet and rotary atomizer.
Further, the inlet connection of the bypass flue A is equipped with the damper A of adjustable aperture, the bypass
The inlet connection of flue B is equipped with the damper B of adjustable aperture.
Further, the outlet of the bypass flue B and the tie point of the bypass flue A are located on bypass flue A other
Between road damper A and flue gas flow guide system.
Further, the first outlet junction of the conditioning tank is equipped with the regulating valve A of regulating flow quantity；The conditioning tank
Second outlet junction be equipped with regulating flow quantity regulating valve B.
Further, the outlet of the film concentration systems is connected to regulating valve A and rotary-atomizing by waste water bypass duct
On waste water main pipeline between device.
Based on the method that thermal power plant's full load high-salinity wastewater zero-emission system realizes full load high-salinity wastewater zero-emission, work as machine
Group operating load is in 60%THA and 60%THA or more, comprising the following steps:
Step 1, the high-salt wastewater that thermal power plant generates enters conditioning tank through waste water main pipeline；
Step 2, regulating valve A and regulating valve B is opened, flows into the effluent part of the conditioning tank directly through first outlet useless
Water main pipeline, while another part waste water of the conditioning tank sequentially enters melded system and film concentration system through waste water bypass duct
System, the melded system are used to remove the suspended matter and hardness in waste water, and the film concentration systems are for improving waste strength simultaneously
Wastewater flow is reduced, the concentration waste water that the film concentration systems generate imports the waste water main pipeline, obtains composite waste；
Step 3, the composite waste enters rotary atomizer, and being atomized through high speed rotation as partial size is 20-80 μm useless
Water drop enters evaporating column；
Step 4, damper A is opened and adjusted, damper B, the part high temperature cigarette before air preheater in flue collector are closed
Gas enters flue gas flow guide system through bypass flue A, and forms spiral flue gas stream into the evaporating column；
Step 5, the spiral flue gas stream and the waste water drop are sufficiently mixed heat exchange, waste water drop in the evaporating column
It is quickly evaporated, solid particulate matter a part of generation is discharged through the removing ash pipeline of the evaporation tower bottom, and another part is with cigarette
Gas is discharged from the exhanst gas outlet of evaporating column bottom end side, the main cigarette before returning to the deduster through the bypass flue A
Road is finally captured by the deduster.
Further, when unit load increases, increase the aperture of the regulating valve A and reduce opening for the regulating valve B
Degree, makes more high-salt wastewaters enter waste water main pipeline through first outlet；When unit load reduces, reduce opening for regulating valve A
The aperture for spending and increasing the regulating valve B makes more high-salt wastewaters enter the melded system and film through waste water bypass duct
Concentration systems.
Based on the method that thermal power plant's full load high-salinity wastewater zero-emission system realizes full load high-salinity wastewater zero-emission, work as machine
When group operating load is reduced to 60%THA or less, comprising the following steps:
Step 1, the high-salt wastewater that thermal power plant generates enters conditioning tank through waste water main pipeline；
Step 2, close regulating valve A, open regulating valve B, make whole waste water of the conditioning tank through waste water bypass duct according to
Secondary to enter melded system and film concentration systems, the film concentration systems generate concentration waste water and import the waste water main pipeline；
Step 3, the concentration waste water enters rotary atomizer, and being atomized through high speed rotation as partial size is 20-80 μm useless
Water drop enters evaporating column；
Step 4, damper A and damper B are opened simultaneously, makes the high-temperature flue gas before the economizer of part through the side
Road flue B imports bypass flue A, adjusts the aperture of damper A and damper B, stablizes the temperature for converging rear flue gas
320 DEG C or more；High-temperature flue gas after converging enters the flue gas flow guide system, forms spiral flue gas stream and enters the evaporating column；
Step 5, the spiral flue gas stream and the waste water drop are sufficiently mixed heat exchange, waste water drop in the evaporating column
It is quickly evaporated, solid particulate matter a part of generation is discharged through the removing ash pipeline of the evaporation tower bottom, and another part is with cigarette
Gas is discharged from the exhanst gas outlet of evaporating column bottom end side, the main cigarette before returning to the deduster through the bypass flue A
Road is finally captured by the deduster.
The invention has the benefit that
1. when unit load is lower than 60%THA, flexible modulation and the flue-gas temperature for entering evaporating column can be improved, while it can
Flexible modulation waste water treatment process, being concentrated by film reduces wastewater flow, realizes the zero-emission of high-salt wastewater in low- load conditions
It puts.
2. when unit load be higher than 60%THA when, can flexible modulation high-salt wastewater process flow, be not required to effluent part
Softening and film concentration are directly evaporated, and are saved waste water softening and film concentrated cost, are realized the low-cost zero-discharge of waste water.
Detailed description of the invention
Fig. 1 is a kind of flexibly adjustable thermal power plant's high-salinity wastewater zero-emission system schematic of the present invention；
Wherein, 1- economizer, 2-SCR denitrification apparatus, 3- air preheater, 4- deduster, 5- conditioning tank, 6- bypass flue A, 7-
Damper A, 8- evaporating column, 9- rotary atomizer, 10- flue gas flow guide system, 11- waste water bypass duct, 12- melded system,
13- flue collector, 14- removing ash pipeline, 15- regulating valve A, 16- damper B, 17- film concentration systems, 18- regulating valve B, 19- are useless
Water main pipeline, 20- bypass flue B.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
A kind of flexibly adjustable thermal power plant's full load high-salinity wastewater zero-emission system, as shown in Figure 1, including passing through flue collector
13 sequentially connected economizers 1, SCR denitration device 2, air preheater 3 and deduster 4, further include flue duct bypass subsystem and waste water
Subsystem.Wherein:
The flue duct bypass subsystem includes bypass flue A6, the entrance of the bypass flue A6 and the air preheater 3 it
Preceding flue collector is connected, and junction is equipped with the damper A7 of adjustable aperture, and the outlet of the bypass flue A6 is removed with described
Flue collector before dirt device 4 communicates；The bypass flue A6 is equipped with evaporating column 8, and 8 inner tip of evaporating column is equipped with flue gas
Flow guide system 10 and rotary atomizer 9；The flue gas flow guide system 10 is communicated with the bypass flue A6, the evaporating column 8
Bottom sides are equipped with exhanst gas outlet and communicate with the bypass flue A6, and 8 bottom of evaporating column is arranged right below removing ash pipeline
14。
The gas bypass subsystem further includes bypass flue B20, the entrance and the economizer of the bypass flue B20
Flue collector before 1 is connected, and junction is equipped with damper B16, the bypass flue B20 that aperture is adjusted and the bypass
Flue A6 is connected, and tie point is set between the damper A7 and the flue gas flow guide system 9.
The waste water subsystem includes conditioning tank 5, melded system 12 and film concentration systems 17；Wherein, the conditioning tank 5
Entrance connects waste water main pipeline 19, and the first outlet of the conditioning tank 5 connects rotary atomizer 9 by waste water main pipeline 19；Institute
The second outlet for stating conditioning tank 5 connects the entrance of the melded system 12, the melded system 12 by waste water bypass duct 11
Outlet by the entrances of 11 junctional membrane concentration systems 17 of waste water bypass duct, the outlet of the film concentration systems 17 passes through waste water
Bypass duct 11 is connected on the waste water main pipeline 19 between the first outlet and rotary atomizer 9 of the conditioning tank 5.The tune
The first outlet junction for saving pond 5 is equipped with the regulating valve A15 of regulating flow quantity；The second outlet junction of the conditioning tank 5 is set
There is the regulating valve B18 of regulating flow quantity.
Based on the method that thermal power plant's full load high-salinity wastewater zero-emission system realizes full load high-salinity wastewater zero-emission, work as machine
Group operating load is in 60%THA and 60%THA or more, comprising the following steps:
Step 1, the high-salt wastewater that thermal power plant generates enters conditioning tank 5 through waste water main pipeline 19；Since wastewater flow exists
Certain fluctuation, the conditioning tank 5 can play the role of buffering and regime flow.
Step 2, it opens regulating valve A15 and opens regulating valve B18, make the effluent part of the conditioning tank 5 directly through first
Outlet flow into waste water main pipeline 19, while another part waste water of the conditioning tank 5 sequentially entered through waste water bypass duct 11 it is soft
Change system 12 and film concentration systems 17, the melded system 12 are used to remove the suspended matter and hardness in waste water, it is ensured that the film
17 safe and stable operation of concentration systems；The film concentration systems 17 are for improving waste strength and reducing wastewater flow, the film
The concentration waste water that concentration systems 17 generate imports the waste water main pipeline 19, obtains composite waste.
Step 3, the composite waste enters rotary atomizer 9, and being atomized through high speed rotation as partial size is 20-80 μm useless
Water drop enters evaporating column 8.
Step 4, damper A7 is opened and adjusted, damper B16 is closed, the part before air preheater 3 in flue collector is high
Warm flue gas enters flue gas flow guide system 10 through bypass flue A6, and forms spiral flue gas stream into the evaporating column 8.
Step 5, the spiral flue gas stream and the waste water drop are sufficiently mixed heat exchange, exhausted water in the evaporating column 8
Drop is quickly evaporated, and solid particulate matter a part of generation is discharged through the removing ash pipeline 14 of 8 bottom of evaporating column, another part
It is discharged with flue gas from the exhanst gas outlet of the 8 bottom end side of evaporating column, is returned to before the deduster 4 through the bypass flue A6
Flue collector, finally captured by the deduster 4.
Further, with the raising of load, it is possible to increase the aperture of the regulating valve A15 simultaneously reduces the regulating valve B18
Aperture, so that more high-salt wastewaters is directly entered waste water main pipeline through first outlet and enter back into rotary atomizer, the part is useless
Water can save corresponding processing cost without softening and film concentration.With the reduction of load, the aperture of regulating valve A15 can be reduced
And increase the aperture of the regulating valve B18, so that more high-salt wastewaters is entered the melded system 12 through waste water bypass duct 11
It with film concentration systems 17, improves waste strength and reduces wastewater flow, reduce demand of the waste water evaporation to flue gas heat.
Based on the method that thermal power plant's full load high-salinity wastewater zero-emission system realizes full load high-salinity wastewater zero-emission, work as machine
When group operating load is reduced to 60%THA or less, comprising the following steps:
Step 1, the high-salt wastewater that thermal power plant generates enters conditioning tank 5 through waste water main pipeline 19；
Step 2, close regulating valve A15, open simultaneously regulating valve B18, make whole waste water of the conditioning tank 5 through waste water by
Road pipeline 11 sequentially enters melded system 12 and film concentration systems 17, and the film concentration systems 17 generate concentration waste water and import institute
State waste water main pipeline 19；
Step 3, the concentration waste water enters rotary atomizer 9, and being atomized through high speed rotation as partial size is 20-80 μm useless
Water drop enters evaporating column 8；
Step 4, damper A7 and damper B16 are opened simultaneously, makes the high-temperature flue gas before part economizer 1 through institute
It states bypass flue B20 and imports bypass flue A6, adjust the aperture of damper A7 and damper B16, make to converge rear flue gas
Temperature is stablized at 320 DEG C or more；High-temperature flue gas after converging enters the flue gas flow guide system 10, forms spiral flue gas stream and enters
The evaporating column 8；
Step 5, the spiral flue gas stream and the waste water drop are sufficiently mixed heat exchange, exhausted water in the evaporating column 8
Drop is quickly evaporated, and solid particulate matter a part of generation is discharged through the removing ash pipeline 14 of 8 bottom of evaporating column, another part
It is discharged with flue gas from the exhanst gas outlet of the 8 bottom end side of evaporating column, is returned to before the deduster 4 through the bypass flue A6
Flue collector, finally captured by the deduster 4.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of flexibly adjustable thermal power plant's full load high-salinity wastewater zero-emission system, including be sequentially connected by flue collector (13)
Economizer (1), SCR denitration device (2), air preheater (3) and deduster (4), which is characterized in that further include flue duct bypass subsystem
System and waste water subsystem；
The flue duct bypass subsystem includes bypass flue A (6) and bypass flue B (20)；Wherein, the bypass flue A (6)
Entrance connects the flue collector between SCR denitration device (2) and air preheater (3), and the outlet connection of the bypass flue A (6) is empty pre-
Flue collector between device (3) and deduster (4)；The bypass flue A (6) is equipped with evaporating column (8), the evaporating column (8)
Inner tip is equipped with flue gas flow guide system (10) and rotary atomizer (9), the flue gas flow guide system (10) and the bypass cigarette
Road A (6) is communicated, and the bottom sides of the evaporating column (8) are equipped with exhanst gas outlet, the exhanst gas outlet and the bypass flue A (6)
It communicates；Removing ash pipeline (14) are connected immediately below the bottom of the evaporating column (8)；The entrance of the bypass flue B (20) connects institute
The flue collector before economizer (1) is stated, the outlet of the bypass flue B (20) connects the bypass flue A (6)；
The waste water subsystem includes conditioning tank (5), melded system (12) and film concentration systems (17)；Wherein, the conditioning tank
(5) entrance connects waste water main pipeline (19), and the first outlet of the conditioning tank (5) passes through waste water main pipeline (19) connection rotation
Atomizer (9)；The second outlet of the conditioning tank (5) connects entering for melded system (12) by waste water bypass duct (11)
Mouthful, the outlet of the melded system (12) passes through the entrance of waste water bypass duct (11) junctional membrane concentration systems (17), the film
The outlet of concentration systems (17) is connected to the first outlet and rotary-atomizing of the conditioning tank (5) by waste water bypass duct (11)
On waste water main pipeline (19) between device (9).
2. thermal power plant's full load high-salinity wastewater zero-emission system according to claim 1, which is characterized in that the bypass cigarette
The inlet connection of road A (6) is equipped with the damper A (7) of adjustable aperture, the inlet connection of the bypass flue B (20)
Damper B (16) equipped with adjustable aperture.
3. thermal power plant's full load high-salinity wastewater zero-emission system according to claim 2, which is characterized in that the bypass cigarette
The tie point of the outlet of road B (20) and the bypass flue A (6) is located at bypass flue baffle A (7) and cigarette on bypass flue A (6)
Between conductance streaming system (10).
4. thermal power plant's full load high-salinity wastewater zero-emission system according to claim 1, which is characterized in that the conditioning tank
(5) first outlet junction is equipped with the regulating valve A (15) of regulating flow quantity；The second outlet junction of the conditioning tank (5)
Regulating valve B (18) equipped with regulating flow quantity.
5. based on the method that thermal power plant's full load high-salinity wastewater zero-emission system realizes full load high-salinity wastewater zero-emission, feature
It is, when unit operating load is in 60%THA and 60%THA or more, comprising the following steps:
Step 1, the high-salt wastewater that thermal power plant generates enters conditioning tank (5) through waste water main pipeline (19)；
Step 2, regulating valve A (15) and regulating valve B (18) are opened, goes out the effluent part of the conditioning tank (5) directly through first
Mouthful flow into waste water main pipeline (19), while another part waste water of the conditioning tank (5) through waste water bypass duct (11) successively into
Entering melded system (12) and film concentration systems (17), the melded system (12) is used to remove the suspended matter and hardness in waste water,
The film concentration systems (17) are for improving waste strength and reducing wastewater flow, the concentration that the film concentration systems (17) generate
Waste water imports the waste water main pipeline (19), obtains composite waste；
Step 3, the composite waste enters rotary atomizer (9), and the waste water for being 20-80 μm for partial size is atomized through high speed rotation
Drop enters evaporating column (8)；
Step 4, it opens and adjusts damper A (7), close damper B (16), the part before air preheater (3) in flue collector
High-temperature flue gas enters flue gas flow guide system (10) through bypass flue A (6), and forms spiral flue gas stream into the evaporating column (8)；
Step 5, the spiral flue gas stream and the waste water drop are sufficiently mixed heat exchange, waste water drop in the evaporating column (8)
It is quickly evaporated, solid particulate matter a part of generation is discharged through the removing ash pipeline (14) of the evaporating column (8) bottom, another portion
Divide and be discharged with flue gas from the exhanst gas outlet of the evaporating column (8) bottom end side, returns to the dedusting through the bypass flue A (6)
Flue collector before device (4) is finally captured by the deduster (4).
6. the method according to claim 5 for realizing full load high-salinity wastewater zero-emission, which is characterized in that work as unit load
When raising, increases the aperture of the regulating valve A (15) and reduce the aperture of the regulating valve B (18), make more high-salt wastewaters
Enter waste water main pipeline (19) through first outlet；When unit load reduces, reduce described in the aperture of regulating valve A (15) and increase
The aperture of regulating valve B (18) makes more high-salt wastewaters enter the melded system (12) and film through waste water bypass duct (11)
Concentration systems (17).
7. based on the method that thermal power plant's full load high-salinity wastewater zero-emission system realizes full load high-salinity wastewater zero-emission, feature
It is, when unit operating load is reduced to 60%THA or less, comprising the following steps:
Step 1, the high-salt wastewater that thermal power plant generates enters conditioning tank (5) through waste water main pipeline (19)；
Step 2, regulating valve A (15) are closed, opens regulating valve B (18), bypasses whole waste water of the conditioning tank (5) through waste water
Pipeline (11) sequentially enters melded system (12) and film concentration systems (17), and the film concentration systems (17) generate concentration waste water simultaneously
Import the waste water main pipeline (19)；
Step 3, the concentration waste water enters rotary atomizer (9), and the waste water for being 20-80 μm for partial size is atomized through high speed rotation
Drop enters evaporating column (8)；
Step 4, damper A (7) and damper B (16) are opened simultaneously, the high-temperature flue gas before part economizer (1) is passed through
The bypass flue B (20) imports bypass flue A (6), adjusts the aperture of damper A (7) and damper B (16), makes to converge
The temperature of flue gas is stablized at 320 DEG C or more after conjunction；High-temperature flue gas after converging enters the flue gas flow guide system (10), forms spiral shell
It revolves flue gas stream and enters the evaporating column (8)；
Step 5, the spiral flue gas stream and the waste water drop are sufficiently mixed heat exchange, waste water drop in the evaporating column (8)
It is quickly evaporated, solid particulate matter a part of generation is discharged through the removing ash pipeline (14) of the evaporating column (8) bottom, another portion
Divide and be discharged with flue gas from the exhanst gas outlet of the evaporating column (8) bottom end side, returns to the dedusting through the bypass flue A (6)
Flue collector before device (4) is finally captured by the deduster (4).
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113620363A (en) * | 2021-10-13 | 2021-11-09 | 大唐环境产业集团股份有限公司 | Intelligent-adjustment wastewater zero-discharge system and method |
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