CN209468258U - A kind of flexibly adjustable thermal power plant's high-salinity wastewater zero-emission system - Google Patents
A kind of flexibly adjustable thermal power plant's high-salinity wastewater zero-emission system Download PDFInfo
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- CN209468258U CN209468258U CN201822238221.9U CN201822238221U CN209468258U CN 209468258 U CN209468258 U CN 209468258U CN 201822238221 U CN201822238221 U CN 201822238221U CN 209468258 U CN209468258 U CN 209468258U
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Abstract
The utility model discloses a kind of flexibly adjustable thermal power plant's high-salinity wastewater zero-emission systems, including the gas bypass subsystem and waste water subsystem being connected with thermal power plant flue collector system, thermal power plant's flue collector system includes flue collector and sequentially connected SCR denitration device, air preheater, deduster and desulfurizing tower thereon；Gas bypass subsystem includes: bypass flue, and entrance is connected with flue collector before air preheater, and outlet is connected with flue collector after air preheater；Evaporating column is set on bypass flue and bottom end side is connected with bypass flue, and inner tip is equipped with rotary atomizer and flue gas flow guide system；Waste water subsystem includes: desulfurization wastewater pipeline, and entrance and desulfurizing tower connect；Waste water regulating box is connected with desulfurization wastewater pipe outlet and is connected by waste water main pipeline with rotary atomizer.The utility model has the beneficial effects that flexible modulation wastewater flow and process flow, save cost for wastewater treatment, wastewater zero discharge is realized.
Description
Technical field
The utility model relates to thermal power generation energy-conserving and emission-cutting technology fields, in particular to a kind of flexibly adjustable fire
Power plant's high-salinity wastewater zero-emission system.
Background technique
It is (main including desulfurization wastewater and other with high salt that thermal power plant can generate a large amount of high-salt wastewater in process of production
Waste water etc.), these waste water are often rich in salt and suspended matter, and ingredient is extremely complex, if direct emission can cause serious dirt to environment
Dye, its zero-emission becomes the hot spot paid close attention in the industry in recent years.In many zero-discharge technologies, rotary-atomizing formula flue evaporates skill
Art process flow is simple, and investment is low with operating cost, becomes one of the mainstream technology of thermal power plant's high-salinity wastewater zero-emission.It is this kind of
The evaporating column in parallel with air preheater is arranged in technology, draws high-temperature flue gas from the flue collector before air preheater and enters tower body, waste water is introduced
The rotary atomizer of tower top uses high-speed rotating mode that waste water is atomized as fine droplet, will using the waste heat that flue gas carries
Waste water evaporation.Due to using high speed rotation atomization by the way of (atomization plant aperture is larger, is not susceptible to block), the technology pair
Waste water quality requirement is low, and the high-salt wastewater of thermal power plant can directly be steamed without pre-treatment (predominantly softening and be concentrated decrement)
Hair, has greatly saved the cost of pre-treating technology.However, the accessible wastewater flow rate of rotary-atomizing formula flue evaporation technique is often
It is limited, when generate wastewater flow rate be more than can must be softened and be concentrated decrement to waste water when treating capacity, cause waste water pre-treatment at
This substantially increases.
Utility model content
To solve the above problems, the purpose of this utility model is to provide a kind of flexibly adjustable thermal power plant's high-salt wastewaters zero
Exhaust system can carry out flexible modulation to wastewater flow and process flow, save cost for wastewater treatment, realize the zero-emission of waste water
It puts.
It is with high salt that the utility model provides a kind of flexibly adjustable thermal power plant's high-salinity wastewater zero-emission system, the thermal power plant
Wastewater zero discharge system includes the gas bypass subsystem and waste water subsystem being connected with thermal power plant flue collector system, the thermoelectricity
Factory owner's flue system includes sequentially connected SCR denitration device on flue collector and the flue collector, air preheater, deduster and takes off
Sulphur tower；
The gas bypass subsystem includes:
Bypass flue, entrance are connected with the flue collector before the air preheater, the bypass flue outlet and the sky
Flue collector after pre- device is connected；
Evaporating column is set on the bypass flue and bottom end side is connected with the bypass flue, in the evaporating column
The flue gas flow guide system that portion top is equipped with rotary atomizer and is connected with the bypass flue；
The waste water subsystem includes:
Desulfurization wastewater pipeline, entrance are connected with the desulfurizing tower；
Waste water regulating box is connected with the desulfurization wastewater pipe outlet, and the waste water regulating box is responsible for by waste water
Road is connected with the rotary atomizer.
It is further improved as the utility model, the connection of the flue collector before the bypass flue and the air preheater
Place is equipped with the bypass flue baffle of adjustable aperture.
It is further improved as the utility model, the junction of the waste water regulating box and the desulfurization wastewater pipeline is set
There is the desulfurization wastewater pipeline regulating valve of adjustable flow.
It is further improved as the utility model, the evaporation tower bottom is equipped with removing ash pipeline.
It is further improved as the utility model, the waste water subsystem further include:
Waste water bypass duct, is successively arranged wastewater equalization pond, melded system and film concentration systems thereon, and the waste water is adjusted
Pond is connected with desulfurization wastewater pipe outlet, and the film concentration systems pass through waste water bypass duct and the waste water regulating box phase
Even.
It is further improved as the utility model, other high-salt wastewater pipelines is further connected on the wastewater equalization pond.
It is further improved as the utility model, the waste water bypass between the wastewater equalization pond and the melded system
Pipeline is equipped with the waste water bypass duct regulating valve of adjustable flow.
The utility model has the following beneficial effects:
1. can flexible modulation wastewater flow and process flow, partial desulfurization waste water can not it is softened and concentration decrement, directly
It is evaporated, reduces the softening and concentrated cost of the effluent part.
2. when unit load, which reduces (flue-gas temperature and flow decline) or waste water yield, to be increased, can flexible modulation it is useless
Water treatment process is softened to more waste water and is concentrated decrement, reduces final wastewater flow rate to be processed, it is ensured that unit load
The zero-emission of waste water when low or waste water yield is big.
3. the evaporation of desulfurization wastewater increases smoke moisture, be conducive to the reunion of flue gas tiny particles content, reduce tiny
The discharge of particulate matter.
4. the waste heat that effective use flue gas carries realizes wastewater zero discharge, while having achieved the purpose that energy conservation and environmental protection.
Detailed description of the invention
Fig. 1 is a kind of knot of flexibly adjustable thermal power plant's high-salinity wastewater zero-emission system described in the utility model embodiment
Structure schematic diagram.
In figure,
1, SCR denitration device；2, air preheater；3, deduster；4, desulfurizing tower；5, flue collector；6, bypass flue；7, cigarette is bypassed
Road baffle；8, evaporating column；9, rotary atomizer；10, flue gas flow guide system；11, melded system；12, film concentration systems；13, it gives up
Water bypass duct regulating valve；14, removing ash pipeline；15, desulfurization wastewater pipeline regulating valve；16, waste water bypass duct；17, desulfurization is useless
Waterpipe；18, other high-salt wastewater pipelines；19, wastewater equalization pond；20, waste water regulating box；21, waste water main pipeline.
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, a kind of flexibly adjustable thermal power plant's high-salinity wastewater zero-emission system of the utility model embodiment, packet
The gas bypass subsystem and waste water subsystem being connected with thermal power plant flue collector system are included, thermal power plant's flue collector system includes main cigarette
Sequentially connected SCR denitration device 1, air preheater 2, deduster 3 and desulfurizing tower 4 on road 5 and flue collector 5.
Gas bypass subsystem includes bypass flue 6 and evaporating column 8.Main cigarette before 6 entrance of bypass flue and air preheater 2
Road 5 is connected, and the outlet of bypass flue 6 is connected with the flue collector 5 after air preheater 2.Evaporating column 8 is set on bypass flue 6 and bottom end
Side is connected with bypass flue 6, and the flue gas that 8 inner tip of evaporating column is equipped with rotary atomizer 9 and is connected with bypass flue 6 is led
Streaming system 10.8 bottom of evaporating column is equipped with removing ash pipeline 14, convenient for the solid particulate matter discharge that will be generated inside evaporating column 8.Into one
Step, the junction of the flue collector 5 before bypass flue 6 and air preheater 2 is equipped with the bypass flue baffle 7 of adjustable aperture, leads to
The adjusting of high-temperature flue gas flow can be realized in the adjusting for crossing 7 aperture of bypass flue baffle.
Waste water subsystem includes desulfurization wastewater pipeline 17 and waste water regulating box 20.17 entrance of desulfurization wastewater pipeline and desulfurizing tower
4 are connected, and waste water regulating box 20 is connected with the outlet of desulfurization wastewater pipeline 17, and waste water regulating box 20 passes through waste water main pipeline 21 and rotation
Turn atomizer 9 to be connected.Further, the junction of waste water regulating box 20 and desulfurization wastewater pipeline 17 is equipped with the desulfurization of adjustable flow
The adjusting of desulfurization wastewater flow can be realized by adjusting desulfurization wastewater pipeline regulating valve 15 in waste pipe regulating valve 15.
Waste water subsystem further includes waste water bypass duct 16, be successively arranged on waste water bypass duct 16 wastewater equalization pond 19,
Melded system 11 and film concentration systems 12, wastewater equalization pond 19 are connected with the outlet of desulfurization wastewater pipeline 17, and film concentration systems 12 are logical
It crosses waste water bypass duct 16 to be connected with waste water regulating box 20, other high-salt wastewater pipelines 18 is further connected on wastewater equalization pond 19.Into
One step, the waste water bypass duct 16 between wastewater equalization pond 19 and melded system 11 is equipped with the waste water shunt valve of adjustable flow
The adjusting of mixing high-salt wastewater flow can be realized by adjusting waste water bypass duct regulating valve 13 in road regulating valve 13.
Based on it is above-mentioned flexibly adjustable thermal power plant's high-salinity wastewater zero-emission device thermal power plant's high-salinity wastewater zero-emission method,
The following steps are included:
Step 1, desulfurization wastewater pipeline regulating valve 15 is opened, the partial desulfurization waste water that desulfurizing tower 4 generates is through desulfurization wastewater pipe
Road 17 is directly entered waste water regulating box 20, remaining desulfurization wastewater enters wastewater equalization pond 19 through desulfurization wastewater pipeline 17；
Step 2, other high-salt wastewaters enter wastewater equalization pond 19 through other high-salt wastewater pipelines 18, adjust with waste water is entered
The desulfurization wastewater in pond 19 mixes, and obtains mixing high-salt wastewater；
Step 3, waste water bypass duct regulating valve 13 is opened, adjusting its aperture stablizes wastewater flow, mixes high-salt wastewater
Enter melded system 11 by waste water bypass duct 16, suspended matter, calcium ion and magnesium ion in waste water are removed, are softened
Waste water；
Step 4, softening waste water enters film concentration systems 12 by waste water bypass duct 16, and salinity is promoted to 10%-
20%, wastewater flow is lowered, and obtains concentration waste water；
Step 5, concentration waste water enters waste water regulating box 20, mixes with the desulfurization wastewater for entering waste water regulating box 20 in step 1
It closes, obtains concentration mixed liquor；
Step 6, concentration mixed liquor enters rotary atomizer 9 by waste water main pipeline 21, is atomized through high speed rotation as grain
The waste water drop that diameter is 20-80 μm, and enter evaporating column 8；
Step 7, bypass flue baffle 7 is opened, the part high-temperature flue gas in flue collector 5 before air preheater 2 is through bypassing cigarette
Road 6 enters flue gas flow guide system 10, forms spiral flue gas stream, and enter evaporating column 8；
Step 8, spiral flue gas stream and waste water drop are sufficiently mixed heat exchange in evaporating column 8, and waste water drop is quickly evaporated,
Solid particulate matter a part of generation is discharged through the removing ash pipeline 14 of 8 bottom of evaporating column, and another part is with flue gas from 8 bottom of evaporating column
End side surface discharge, returns to the flue collector 5 after air preheater 2, is finally captured by deduster 3.
When unit load reduces or waste water yield increases, step 1 further include: reduce desulfurization wastewater pipeline regulating valve 15
Aperture, so that more desulfurization wastewaters is entered wastewater equalization pond 19, melded system 11 and film concentration systems 12, concentrated waste water stream
Amount is lowered, and demand of the evaporation process to flue gas heat is also reduced by.
When unit load increases or waste water yield reduces, step 1 further include: increase desulfurization wastewater pipeline regulating valve 15
Aperture, so that more desulfurization wastewaters is directly entered waste water regulating box 20, this effluent part need not move through softening and film concentration
Link can save corresponding processing cost.
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 (7)
1. a kind of flexibly adjustable thermal power plant's high-salinity wastewater zero-emission system, which is characterized in that thermal power plant's high-salt wastewater zero
Exhaust system includes the gas bypass subsystem and waste water subsystem being connected with thermal power plant flue collector system, the thermoelectricity factory owner cigarette
Road system includes sequentially connected SCR denitration device (1), air preheater (2), dedusting on flue collector (5) and the flue collector (5)
Device (3) and desulfurizing tower (4)；
The gas bypass subsystem includes:
Bypass flue (6), entrance are connected with the flue collector (5) before the air preheater (2), bypass flue (6) outlet
It is connected with the flue collector (5) after the air preheater (2)；
Evaporating column (8) is set on the bypass flue (6) and bottom end side is connected with the bypass flue (6), the evaporation
The flue gas flow guide system (10) that tower (8) inner tip is equipped with rotary atomizer (9) and is connected with the bypass flue (6)；
The waste water subsystem includes:
Desulfurization wastewater pipeline (17), entrance are connected with the desulfurizing tower (4)；
Waste water regulating box (20) is connected with the desulfurization wastewater pipeline (17) outlet, and the waste water regulating box (20) passes through
Waste water main pipeline (21) is connected with the rotary atomizer (9).
2. thermal power plant's high-salinity wastewater zero-emission system according to claim 1, which is characterized in that the bypass flue (6)
The bypass flue baffle (7) of adjustable aperture is equipped with the junction of the flue collector (5) before the air preheater (2).
3. thermal power plant's high-salinity wastewater zero-emission system according to claim 1, which is characterized in that the waste water regulating box
(20) the desulfurization wastewater pipeline regulating valve (15) of adjustable flow is equipped with the junction of the desulfurization wastewater pipeline (17).
4. thermal power plant's high-salinity wastewater zero-emission system according to claim 1, which is characterized in that evaporating column (8) bottom
Portion is equipped with removing ash pipeline (14).
5. thermal power plant's high-salinity wastewater zero-emission system according to claim 1, which is characterized in that the waste water subsystem is also
Include:
Waste water bypass duct (16) is successively arranged wastewater equalization pond (19), melded system (11) and film concentration systems (12) thereon,
The wastewater equalization pond (19) is connected with the desulfurization wastewater pipe (17) outlet, and the film concentration systems (12) are bypassed by waste water
Pipeline (16) is connected with the waste water regulating box (20).
6. thermal power plant's high-salinity wastewater zero-emission system according to claim 5, which is characterized in that the wastewater equalization pond
(19) other high-salt wastewater pipelines (18) are further connected on.
7. thermal power plant's high-salinity wastewater zero-emission system according to claim 5, which is characterized in that the wastewater equalization pond
(19) the waste water bypass duct that the waste water bypass duct (16) between the melded system (11) is equipped with adjustable flow is adjusted
Valve (13).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822238221.9U CN209468258U (en) | 2018-12-28 | 2018-12-28 | A kind of flexibly adjustable thermal power plant's high-salinity wastewater zero-emission system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822238221.9U CN209468258U (en) | 2018-12-28 | 2018-12-28 | A kind of flexibly adjustable thermal power plant's high-salinity wastewater zero-emission system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109626691A (en) * | 2018-12-28 | 2019-04-16 | 大唐环境产业集团股份有限公司 | A kind of flexibly adjustable thermal power plant's high-salinity wastewater zero-emission system and method |
| CN111320222A (en) * | 2020-03-31 | 2020-06-23 | 大唐环境产业集团股份有限公司 | Desulfurization wastewater zero-discharge treatment system and method based on double-tower structure |
-
2018
- 2018-12-28 CN CN201822238221.9U patent/CN209468258U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109626691A (en) * | 2018-12-28 | 2019-04-16 | 大唐环境产业集团股份有限公司 | A kind of flexibly adjustable thermal power plant's high-salinity wastewater zero-emission system and method |
| CN111320222A (en) * | 2020-03-31 | 2020-06-23 | 大唐环境产业集团股份有限公司 | Desulfurization wastewater zero-discharge treatment system and method based on double-tower structure |
| CN111320222B (en) * | 2020-03-31 | 2024-01-23 | 大唐环境产业集团股份有限公司 | Desulfurization wastewater zero-emission treatment system and method based on double-tower structure |
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