CN109133237A - A kind of thermal power plant end high-salinity wastewater zero-emission processing system and its working method - Google Patents
A kind of thermal power plant end high-salinity wastewater zero-emission processing system and its working method Download PDFInfo
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- 239000002351 wastewater Substances 0.000 title claims abstract description 107
- 238000000034 method Methods 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 145
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 111
- 239000003546 flue gas Substances 0.000 claims abstract description 111
- 239000006200 vaporizer Substances 0.000 claims abstract description 47
- 239000007921 spray Substances 0.000 claims abstract description 42
- 239000007789 gas Substances 0.000 claims abstract description 31
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 17
- 238000000926 separation method Methods 0.000 claims abstract description 10
- 230000003020 moisturizing effect Effects 0.000 claims abstract description 4
- 238000001704 evaporation Methods 0.000 claims abstract description 3
- 230000008020 evaporation Effects 0.000 claims abstract 2
- 238000006477 desulfuration reaction Methods 0.000 claims description 23
- 230000023556 desulfurization Effects 0.000 claims description 23
- 150000003839 salts Chemical class 0.000 claims description 10
- 206010022000 influenza Diseases 0.000 claims description 9
- 239000013078 crystal Substances 0.000 claims description 7
- 235000014171 carbonated beverage Nutrition 0.000 claims description 4
- 210000003298 dental enamel Anatomy 0.000 claims description 3
- 238000002386 leaching Methods 0.000 claims 1
- 238000005507 spraying Methods 0.000 claims 1
- 230000000903 blocking effect Effects 0.000 abstract description 4
- 239000000284 extract Substances 0.000 abstract 1
- 230000008676 import Effects 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 abstract 1
- 235000019504 cigarettes Nutrition 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000010865 sewage Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
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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
- C02F1/16—Treatment of water, waste water, or sewage by heating by distillation or evaporation using waste heat from other processes
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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
- C02F1/06—Flash evaporation
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/10—Energy recovery
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treating Waste Gases (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The present invention relates to a kind of thermal power plant end high-salinity wastewater zero-emission processing system and its working methods, are used for large-scale power station end high-salinity wastewater zero-emission.The present invention includes low-temperature flue gas pipeline, high-temperature flue gas pipeline, air preheater, gas cooler, deduster, desulfurizing tower and air-introduced machine；Vacuum pump extracts the vapor in cryogenic vaporizer and forms vacuum, the heat of flue gas heat-exchange unit supply is absorbed into the end high-salt wastewater of cryogenic vaporizer at this time, and it is concentrated by evaporation under the conditions of low-temp low-pressure, the vapor of generation passes through steam-water separation, gas after separation enters desulfurizing tower, and the water after separation weighs as desulphurization system moisturizing maintenance level；Waste water after concentration sprays into air preheater import flue again or exhaust pass is flashed, and is finally reached the purpose of end high-salinity wastewater zero-emission.The present invention is able to achieve the end thermal power plant Quan Chang high-salinity wastewater zero-emission, and can not influence air preheater inlet flue gas temperature and boiler efficiency, without the risk of air preheater blocking.
Description
Technical field
The present invention relates to a kind of thermal power plant end high-salinity wastewater zero-emission processing system and its working methods, are used for thermal power plant
The processing of end high-salinity wastewater zero-emission.
Background technique
China's national situation is still based on thermal power generation at present, and sewerage, the stone that thermal power plant has recirculated water to generate
Desulfurization wastewater, the reverse osmosis sewage etc. that lime stone-gypsum wet desulphurization system generates, containing many poisonous and hazardous in these sewage
Substance, carrying out processing can be only achieved emission request.Since waste water quality is many kinds of, water is of different sizes, is handling this
It is relatively difficult when a little waste water, and the generally existing system complex of these methods, take up a large area, the problems such as operating cost is high.
High-salt wastewater processing technique in end used at present mainly include the following types:
The first is that chemical agent-feeding treatment is carried out to end high-salt wastewater, is precipitated, filtered, neutralized, flocculate, seeped to waste water
Thoroughly, it evaporates, crystallize or using treatment process such as three header devices.Such as the patent of invention of CN201711106836.X, disclose
A kind of desulfurization wastewater Zero discharging system, in this system desulfurization wastewater by chemicals addition control, plate compression, softening, precipitating, filtering,
It permeates, evaporate a series of processing, finally obtain clear water and high-purity sodium salt.This process is complete to wastewater treatment, can be with
Clean recycled water and high-purity salt is obtained, but is taken up a large area, investment cost and operating cost are all very high.
Second of processing at the beginning of for end high-salt wastewater is carried out dosing is introduced directly into boiler height without chemical treatment
In warm flue, waste water is evaporated using high-temperature flue gas.Such as the patent of invention of CN201710942060.9, one is disclosed
Desulfurization wastewater is re-introduced into air after dosing pre-processes by kind Desulphurization for Coal-fired Power Plant wastewater zero discharge system and method, the method
It is evaporated before preheater, since the position that desulfurization wastewater sprays into is air preheater gas approach, sky can be lowered into this way
The smoke temperature of air preheater eventually reduced boiler efficiency, and moreover, the crystal salt for evaporating generation also adds air preheat
The risk of device blocking.The for another example patent of invention of CN201710058803.6 discloses a kind of FGD wastewater zero discharge system, this is
System preheats desulfurization wastewater using low-temperature flue gas, is concentrated, and is then evaporated using high-temperature flue gas to the waste water after concentration.
Although the method also achieves wastewater zero discharge, but the cigarette before water reuse after the concentration of this system air preheater entrance
Gas is evaporated, and finally can also reduce boiler efficiency, increases the risk of air preheater blocking, and in operation by low temperature cigarette
The limitation of temperature degree, when low-temperature flue gas temperature is lower than 100 DEG C, it may be difficult to which desulfurization wastewater is concentrated.
Summary of the invention
It is an object of the invention to overcome the above deficiencies in the existing technologies, and provide a kind of reasonable thermoelectricity of design
Factory's end high-salinity wastewater zero-emission processing system and its working method.
Technical solution used by the present invention solves the above problems is: a kind of processing of thermal power plant end high-salinity wastewater zero-emission
System, including low-temperature flue gas pipeline, high-temperature flue gas pipeline, air preheater, gas cooler, deduster, desulfurizing tower and air inducing
Machine；It is characterized in that, the air preheater, gas cooler and deduster are sequentially arranged in height along the flow direction of flue gas
On warm flue, one end of deduster is connected to high-temperature flue gas pipeline, the other end and low-temperature flue gas pipeline of the deduster
Connection, the deduster, air-introduced machine and desulfurizing tower are sequentially arranged on low-temperature flue gas pipeline along the flow direction of flue gas；It is described
Desulfurizing tower is connected to by desulfurization wastewater pipeline with cryogenic vaporizer, and waste water pump and waste water spray are equipped on the desulfurization wastewater pipeline
Head is drenched, the waste water spray head is located at the inside of cryogenic vaporizer；High-salt wastewater introduces pipe and is connected to desulfurization wastewater pipeline；It is described
Cryogenic vaporizer is connected to by concentrated water pipeline with high-temperature flue gas pipeline, and concentrated water pump, the concentrated water are equipped on the concentrated water pipeline
Pipe arrangement has No.1 concentrated water branch pipe and No. two concentrated water branch pipes, installs respectively on the No.1 concentrated water branch pipe and No. two concentrated water branch pipes
There are No.1 valve and No. two valves, No.1 concentrated water spray is also separately installed on the No.1 concentrated water branch pipe and No. two concentrated water branch pipes
Head and No. two concentrated water spray heads, the No.1 concentrated water spray head and No. two concentrated water spray heads are respectively positioned in high-temperature flue gas pipeline；Pressure
Contracting air pipeline is connected to concentrated water pipeline；The low-temperature flue gas pipeline is connected to by No.1 bypass flue with flue gas heat-exchange unit, institute
It states and low-temperature flue gas bypass pump is installed on No.1 bypass flue, the low-temperature flue gas bypass pump has the function of adjusting flow；Institute
The inside that cryogenic vaporizer is arranged in flue gas heat-exchange unit is stated, the flue gas heat-exchange unit is located at the lower section of waste water spray head, the cigarette
Gas heat exchanger also passes through No. two bypass flues and is connected to low-temperature flue gas pipeline；The cryogenic vaporizer passes through steam-water pipe and carbonated drink
Separator is connected to, and is equipped with vacuum pump on the steam-water pipe, and vacuum pump can control the hydrone pressure in cryogenic vaporizer,
So that high-salt wastewater can gasify at a lower temperature；The steam-water separator is connected by exhaust piping and low-temperature flue gas pipeline
Logical, separation waterpipe is connected to steam-water separator.
Furthermore, the steam-water pipe is mounted on the top of cryogenic vaporizer.
Furthermore, the exhaust piping is mounted on the top of steam-water separator, and the separation waterpipe is mounted on vapour
The junction of the lower part of separator, the exhaust piping and low-temperature flue gas pipeline is located on the gas approach of air-introduced machine.
Furthermore, the No.1 concentrated water branch pipe and No. two concentrated water branch pipes are connected to air with high-temperature flue gas pipeline respectively
On the inlet flue duct and exhaust pass of preheater, the interface of the concentrated water pipeline and compressed air pipe is located at the outlet of concentrated water pump
On pipeline.
Furthermore, the interface of the No.1 bypass flue and low-temperature flue gas pipeline is located at the exhaust pass of deduster
On, the interface of No. two bypass flues and low-temperature flue gas pipeline is located on the gas approach of air-introduced machine.
A kind of working method of thermal power plant end high-salinity wastewater zero-emission processing system as described above, which is characterized in that
The working method is as follows: it is with high salt useless that the desulfurization wastewater and high-salt wastewater that desulfurizing tower generates introduce each equipment end that pipe introduces
Water is squeezed into waste water spray head by desulfurization wastewater pipeline by waste water pump jointly and is sprayed into cryogenic vaporizer, and cryogenic vaporizer is sprayed into
In waste water absorb the heat of flue gas heat-exchange unit release, temperature rises to 65 DEG C or more；Vacuum pump controls the interior of cryogenic vaporizer
Pressure is at low-pressure state, and the high-salt wastewater sprayed at this time evaporates in a low pressure environment generates vapor and condensed water；Its
In, condensed water flows into concentrated water pump by concentrated water pipeline, and the compressed air being then sent into compressed air pipe mixes；Work as condensed water
Amount it is larger when, open No. two valves, be passed through condensed water in No. two concentrated water spray heads by No. two concentrated water branch pipes and spray into sky
The gas approach of air preheater is flashed, and the crystal salt of generation is removed when passing through deduster with flue gas；When the amount of condensed water
When smaller, No.1 valve is opened, be passed through condensed water in No.1 concentrated water spray head by No.1 concentrated water branch pipe and sprays into air is pre-
The exhaust pass of hot device is flashed, and the crystal salt of generation is removed when passing through deduster with flue gas；It in this way can be according to concentration
Water inventory selection sprays into the flue of suitable smoke temperature, it is ensured that condensed water flashes completely；High-salt wastewater evaporates production in cryogenic vaporizer
Raw vapor then passes through steam-water pipe and is sent into steam-water separator by vacuum pump, and vapor is separated into useless in steam-water separator
Gas and cleaner water, exhaust gas enter the inlet flue gas pipeline of air-introduced machine by exhaust piping, and cleaner water is introduced into desulfurization
Tower is recycled as moisturizing；Low-temperature flue gas in low-temperature flue gas pipeline is pumped into No.1 bypass flue by low-temperature flue gas bypass
Flue gas heat-exchange unit discharges heat to cryogenic vaporizer, the gas approach of air-introduced machine is then entered by No. two bypass flues；According to
The temperature requirements of cryogenic vaporizer adjust the control of low-temperature flue gas bypass pump and flow into the flue gas flow of cryogenic vaporizer, and adjust useless
Water pump controls high-salt wastewater flow, guarantees suitable waste strength, avoids the high-salt wastewater in cryogenic vaporizer from crystallizing, together
When flue gas heat-exchange unit using heat pipe plate enamel technology, not only ensure that heat exchange efficiency but also met requirement for anticorrosion.
More specifically, the interior pressure of vacuum pump control cryogenic vaporizer is in 0.025MPa.
Compared with prior art, the present invention having the following advantages that and effect: the present invention can be realized the end thermal power plant Quan Chang
High-salinity wastewater zero-emission, and the inlet flue gas temperature of air preheater is not influenced, boiler efficiency is not influenced, without Blocking in Air Preheater
The risk of plug；Meanwhile by providing environment under low pressure, realizes and evaporate high-salt wastewater under cryogenic conditions, not by low-temperature flue gas temperature
Limitation not less than 100 DEG C, or even high-salt wastewater can be evaporated without using flue gas.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention.
In figure: desulfurization wastewater pipeline 1, steam-water pipe 2, exhaust piping 3, separation waterpipe 4, No.1 bypass flue 5, two
Bypass flue 6, concentrated water pipeline 7, compressed air pipe 8, low-temperature flue gas pipeline 9, high-temperature flue gas pipeline 10, high-salt wastewater introduce pipe
11, air preheater 21, gas cooler 22, deduster 23, desulfurizing tower 24, cryogenic vaporizer 25, steam-water separator 26, waste water
Spray head 27, No.1 concentrated water spray head 28, flue gas heat-exchange unit 29, waste water pump 31, vacuum pump 32, concentrated water pump by 33, low-temperature flue gas
Road pumps 34, air-introduced machine 35,71, No. two concentrated water branch pipes 72 of No.1 concentrated water branch pipe, the concentrated water of valve 74, two of No.1 valve 73, two
Spray head 281.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawing and by embodiment, and following embodiment is to this hair
Bright explanation and the invention is not limited to following embodiments.
Embodiment.
Referring to Fig. 1, a kind of thermal power plant end high-salinity wastewater zero-emission processing system, including low-temperature flue gas pipeline 9, high temperature cigarette
Feed channel 10, air preheater 21, gas cooler 22, deduster 23, desulfurizing tower 24 and air-introduced machine 35；Air preheater 21,
Gas cooler 22 and deduster 23 are sequentially arranged on high-temperature flue gas pipeline 10 along the flow direction of flue gas, deduster 23
One end is connected to high-temperature flue gas pipeline 10, and the other end of deduster 23 is connected to low-temperature flue gas pipeline 9, deduster 23, air-introduced machine
35 and desulfurizing tower 24 be sequentially arranged on low-temperature flue gas pipeline 9 along the flow direction of flue gas；Desulfurizing tower 24 passes through desulfurization wastewater
Pipeline 1 is connected to cryogenic vaporizer 25, and waste water pump 31 and waste water spray head 27, waste water spray are equipped on desulfurization wastewater pipeline 1
First 27 are located at the inside of cryogenic vaporizer 25；High-salt wastewater introduces pipe 11 and is connected to desulfurization wastewater pipeline 1；Cryogenic vaporizer 25 is logical
Overrich waterpipe 7 is connected to high-temperature flue gas pipeline 10, concentrated water pump 33 is equipped on concentrated water pipeline 7, concentrated water pipeline 7 is disposed with No.1
No.1 valve is separately installed on concentrated water branch pipe 71 and No. two concentrated water branch pipes 72, No.1 concentrated water branch pipe 71 and No. two concentrated water branch pipes 72
73 and No. two valves 74,28 He of No.1 concentrated water spray head is also separately installed on No.1 concentrated water branch pipe 71 and No. two concentrated water branch pipes 72
No. two concentrated water spray heads 281, No.1 concentrated water spray head 28 and No. two concentrated water spray heads 281 are respectively positioned in high-temperature flue gas pipeline 10；
Compressed air pipe 8 is connected to concentrated water pipeline 7；Low-temperature flue gas pipeline 9 is connected by No.1 bypass flue 5 and flue gas heat-exchange unit 29
It is logical, low-temperature flue gas bypass pump 34 is installed, flue gas heat-exchange unit 29 is arranged in cryogenic vaporizer 25 on No.1 bypass flue 5
Portion, flue gas heat-exchange unit 29 are located at the lower section of waste water spray head 27, and flue gas heat-exchange unit 29 also passes through No. two bypass flues 6 and low temperature cigarette
Feed channel 9 is connected to；Cryogenic vaporizer 25 is connected to by steam-water pipe 2 with steam-water separator 26, is equipped with vacuum on steam-water pipe 2
Pump 32；Steam-water separator 26 is connected to by exhaust piping 3 with low-temperature flue gas pipeline 9, and separation waterpipe 4 and steam-water separator 26 connect
It is logical.
In the present embodiment, steam-water pipe 2 is mounted on the top of cryogenic vaporizer 25.
In the present embodiment, exhaust piping 3 is mounted on the top of steam-water separator 26, and separation waterpipe 4 is mounted on carbonated drink point
The junction of lower part from device 26, exhaust piping 3 and low-temperature flue gas pipeline 9 is located on the gas approach of air-introduced machine 35.
In the present embodiment, No.1 concentrated water branch pipe 71 and No. two concentrated water branch pipes 72 are connected to sky with high-temperature flue gas pipeline 10 respectively
On the inlet flue duct and exhaust pass of air preheater 21, the interface of concentrated water pipeline 7 and compressed air pipe 8 is located at concentrated water pump 33
On outlet conduit.
In the present embodiment, the interface of No.1 bypass flue 5 and low-temperature flue gas pipeline 9 is located at the exhaust pass of deduster 23
On, the interface of No. two bypass flues 6 and low-temperature flue gas pipeline 9 is located on the gas approach of air-introduced machine 35.
The working method of above-mentioned thermal power plant's end high-salinity wastewater zero-emission processing system is as follows: desulfurizing tower 24 generates de-
Sulphur waste water and high-salt wastewater introduce each equipment end high-salt wastewater that pipe 11 introduces and pass through desulfurization wastewater by waste water pump 31 jointly
Pipeline 1 is squeezed into waste water spray head 27 and is sprayed into cryogenic vaporizer 25, and the waste water sprayed into cryogenic vaporizer 25 absorbs flue gas and changes
The heat that hot device 29 discharges, temperature rise to 65 DEG C or more；The interior pressure that vacuum pump 32 controls cryogenic vaporizer 25 exists
0.025MPa, the high-salt wastewater sprayed at this time evaporates in a low pressure environment generates vapor and condensed water；Wherein, condensed water is passed through
Concentrated water pipeline 7 flows into concentrated water pump 33, and the compressed air being then sent into compressed air pipe 8 mixes；When the amount of condensed water is larger
When, No. two valves 74 are opened, condensed water is made to be passed through in No. two concentrated water spray heads 281 by No. two concentrated water branch pipes 72 and spray into air
The gas approach of preheater 21 is flashed, and the crystal salt of generation is removed when passing through deduster 23 with flue gas；When condensed water
When measuring smaller, No.1 valve 73 is opened, condensed water is made to be passed through in No.1 concentrated water spray head 28 and spray by No.1 concentrated water branch pipe 71
The exhaust pass for entering air preheater 21 is flashed, and the crystal salt of generation is removed when passing through deduster 23 with flue gas；It is with high salt
The vapor that waste water evaporates generation in cryogenic vaporizer 25 then passes through steam-water pipe 2 and is sent into steam-water separator by vacuum pump 32
26, vapor is separated into exhaust gas and cleaner water in steam-water separator 26, and exhaust gas enters air-introduced machine by exhaust piping 3
35 inlet flue gas pipeline, cleaner water are introduced into desulfurizing tower 24 and recycle as moisturizing；Low temperature in low-temperature flue gas pipeline 9
Flue gas is sent into flue gas heat-exchange unit 29 by low-temperature flue gas bypass pump 34 in No.1 bypass flue 5, discharges heat to cryogenic vaporizer
25, the gas approach of air-introduced machine 35 is then entered by No. two bypass flues 6；According to the temperature requirements of cryogenic vaporizer 25, adjust
It saves the control of low-temperature flue gas bypass pump 34 and flows into the flue gas flow of cryogenic vaporizer 25, and adjust waste water pump 31 and control high-salt wastewater stream
Amount, guarantees suitable waste strength, the high-salt wastewater in cryogenic vaporizer 25 is avoided to crystallize, while flue gas heat-exchange unit 29 is adopted
Enamel technology is plated with heat pipe, heat exchange efficiency had not only been ensure that but also had met requirement for anticorrosion.
It is any to be familiar with although the present invention is disclosed as above with embodiment, its protection scope being not intended to limit the invention
The technical staff of this technology changes and retouches made without departing from the spirit and scope of the invention, should belong to this hair
Bright protection scope.
Claims (7)
1. a kind of thermal power plant end high-salinity wastewater zero-emission processing system, including low-temperature flue gas pipeline (9), high-temperature flue gas pipeline
(10), air preheater (21), gas cooler (22), deduster (23), desulfurizing tower (24) and air-introduced machine (35)；Its feature exists
In the air preheater (21), gas cooler (22) and deduster (23) are sequentially arranged in along the flow direction of flue gas
On high-temperature flue gas pipeline (10), one end of deduster (23) is connected to high-temperature flue gas pipeline (10), the deduster (23) it is another
One end is connected to low-temperature flue gas pipeline (9), the deduster (23), air-introduced machine (35) and desulfurizing tower (24) along flue gas flowing
Direction is sequentially arranged on low-temperature flue gas pipeline (9)；The desulfurizing tower (24) passes through desulfurization wastewater pipeline (1) and cryogenic vaporizer
(25) it is connected to, waste water pump (31) and waste water spray head (27), the waste water spray head is installed on the desulfurization wastewater pipeline (1)
(27) it is located at the inside of cryogenic vaporizer (25)；High-salt wastewater introduces pipe (11) and is connected to desulfurization wastewater pipeline (1)；The low temperature
Evaporator (25) is connected to by concentrated water pipeline (7) with high-temperature flue gas pipeline (10), and concentrated water pump is equipped on the concentrated water pipeline (7)
(33), the concentrated water pipeline (7) is disposed with No.1 concentrated water branch pipe (71) and No. two concentrated water branch pipes (72), the No.1 concentrated water branch pipe
(71) and on No. two concentrated water branch pipes (72) No.1 valve (73) and No. two valves (74), the No.1 concentrated water branch pipe are separately installed with
(71) and on No. two concentrated water branch pipes (72) it is also separately installed with No.1 concentrated water spray head (28) and No. two concentrated water spray heads (281),
The No.1 concentrated water spray head (28) and No. two concentrated water spray heads (281) are respectively positioned in high-temperature flue gas pipeline (10)；Compressed air
Pipeline (8) is connected to concentrated water pipeline (7)；The low-temperature flue gas pipeline (9) passes through No.1 bypass flue (5) and flue gas heat-exchange unit
(29) it is connected to, is equipped with low-temperature flue gas bypass pump (34) on the No.1 bypass flue (5), flue gas heat-exchange unit (29) setting
In the inside of cryogenic vaporizer (25), the flue gas heat-exchange unit (29) is located at the lower section of waste water spray head (27), and the flue gas changes
Hot device (29) is also connected to by No. two bypass flues (6) with low-temperature flue gas pipeline (9)；The cryogenic vaporizer (25) passes through carbonated drink
Pipeline (2) is connected to steam-water separator (26), is equipped with vacuum pump (32) on the steam-water pipe (2)；The steam-water separator
(26) it is connected to by exhaust piping (3) with low-temperature flue gas pipeline (9), separation waterpipe (4) is connected to steam-water separator (26).
2. thermal power plant end high-salinity wastewater zero-emission processing system according to claim 1, which is characterized in that the carbonated drink
Pipeline (2) is mounted on the top of cryogenic vaporizer (25).
3. thermal power plant end high-salinity wastewater zero-emission processing system according to claim 1, which is characterized in that the exhaust gas
Pipeline (3) is mounted on the top of steam-water separator (26), and the separation waterpipe (4) is mounted under steam-water separator (26)
Portion, the exhaust piping (3) and the junction of low-temperature flue gas pipeline (9) are located on the gas approach of air-introduced machine (35).
4. thermal power plant end high-salinity wastewater zero-emission processing system according to claim 1, which is characterized in that the No.1
Concentrated water branch pipe (71) and No. two concentrated water branch pipes (72) be connected to respectively with high-temperature flue gas pipeline (10) air preheater (21) into
On mouth flue and exhaust pass, the interface of the concentrated water pipeline (7) and compressed air pipe (8) is located at the outlet of concentrated water pump (33)
On pipeline.
5. thermal power plant end high-salinity wastewater zero-emission processing system according to claim 1, which is characterized in that the No.1
Bypass flue (5) and the interface of low-temperature flue gas pipeline (9) are located on the exhaust pass of deduster (23), No. two bypass flues
(6) it is located on the gas approach of air-introduced machine (35) with the interface of low-temperature flue gas pipeline (9).
6. a kind of thermal power plant's end high-salinity wastewater zero-emission processing system as described in any one of claim 1-5 claim
Working method, which is characterized in that the working method is as follows: desulfurizing tower (24) generate desulfurization wastewater and high-salt wastewater draw
Each equipment end high-salt wastewater for entering pipe (11) introducing squeezes into waste water spray by desulfurization wastewater pipeline (1) by waste water pump (31) jointly
Leaching head (27) simultaneously sprays into cryogenic vaporizer (25), and the waste water sprayed into cryogenic vaporizer (25), which absorbs flue gas heat-exchange unit (29), to be released
The heat put, temperature rise to 65 DEG C or more；The interior pressure of vacuum pump (32) control cryogenic vaporizer (25) is at low pressure
State, the high-salt wastewater sprayed at this time evaporates in a low pressure environment generates vapor and condensed water；Wherein, condensed water passes through concentrated water
Pipeline (7) flows into concentrated water pump (33), and the compressed air being then sent into compressed air pipe (8) mixes；When condensed water amount compared with
When big, No. two valves (74) are opened, are passed through condensed water in No. two concentrated water spray heads (281) simultaneously by No. two concentrated water branch pipes (72)
The gas approach for spraying into air preheater (21) is flashed, and the crystal salt of generation is removed when passing through deduster (23) with flue gas
It goes；It when the amount of condensed water is smaller, opens No.1 valve (73), making condensed water by No.1 concentrated water branch pipe (71), to be passed through No.1 dense
It in water spray head (28) and sprays into the exhaust pass of air preheater (21) and is flashed, the crystal salt of generation is with flue gas by removing
It is removed when dirt device (23)；The high-salt wastewater vapor that evaporation generates in cryogenic vaporizer (25) then passes through steam-water pipe (2)
Steam-water separator (26) are sent by vacuum pump (32), vapor is separated into exhaust gas and cleaner in steam-water separator (26)
Water, exhaust gas enter the inlet flue gas pipeline of air-introduced machine (35) by exhaust piping (3), and cleaner water is introduced into desulfurizing tower (24)
It is recycled as moisturizing；Low-temperature flue gas in low-temperature flue gas pipeline (9) is in No.1 bypass flue (5) by low-temperature flue gas bypass pump
(34) flue gas heat-exchange unit (29) are sent into, release heat gives cryogenic vaporizer (25), then enters by No. two bypass flues (6) and draws
The gas approach of blower (35)；According to the temperature requirements of cryogenic vaporizer (25), low-temperature flue gas bypass pump (34) control stream is adjusted
Enter the flue gas flow of cryogenic vaporizer (25), and adjust waste water pump (31) control high-salt wastewater flow, guarantees that suitable waste water is dense
Degree, avoids the high-salt wastewater in cryogenic vaporizer (25) from crystallizing, while flue gas heat-exchange unit (29) plates enamel skill using heat pipe
Art not only ensure that heat exchange efficiency but also meet requirement for anticorrosion.
7. the working method of thermal power plant end high-salinity wastewater zero-emission processing system according to claim 6, feature exist
In vacuum pump (32) controls the interior pressure of cryogenic vaporizer (25) in 0.025MPa.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110064286A (en) * | 2019-04-12 | 2019-07-30 | 华电电力科学研究院有限公司 | A kind of cooling joint reducing agent of SNCR spray gun evaporates pyrolysis system and its working method |
| CN111410351A (en) * | 2019-01-07 | 2020-07-14 | 湖南军信环保股份有限公司 | Method for treating high-salinity wastewater |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205473143U (en) * | 2016-01-18 | 2016-08-17 | 李艳萍 | High salinity wastewater treatment system |
| CN106115829A (en) * | 2016-08-31 | 2016-11-16 | 厦门龙净环保技术有限公司 | Desulfurization wastewater spray evaporation processing means with bypath system |
| CN107162084A (en) * | 2017-06-16 | 2017-09-15 | 浙江大学 | A kind of salt water treating system and its method with preposition heat exchanger and rear end deduster |
| CN107857321A (en) * | 2017-11-07 | 2018-03-30 | 西安协力动力科技有限公司 | A kind of technique for Waste Water From Fire Power Plant zero discharge treatment |
| CN108285188A (en) * | 2018-03-13 | 2018-07-17 | 南京常荣声学股份有限公司 | A kind of UTILIZATION OF VESIDUAL HEAT IN coordinated desulfurization wastewater zero discharge and the device and method for removing plume |
| CN108328683A (en) * | 2017-01-19 | 2018-07-27 | 四川苏源环保工程有限公司 | Waste water of heat-engine plant condensing crystallizing Zero discharging system |
| CN209537028U (en) * | 2018-08-01 | 2019-10-25 | 华电电力科学研究院有限公司 | A kind of thermal power plant end high-salinity wastewater zero-emission processing system |
-
2018
- 2018-08-01 CN CN201810863682.7A patent/CN109133237A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205473143U (en) * | 2016-01-18 | 2016-08-17 | 李艳萍 | High salinity wastewater treatment system |
| CN106115829A (en) * | 2016-08-31 | 2016-11-16 | 厦门龙净环保技术有限公司 | Desulfurization wastewater spray evaporation processing means with bypath system |
| CN108328683A (en) * | 2017-01-19 | 2018-07-27 | 四川苏源环保工程有限公司 | Waste water of heat-engine plant condensing crystallizing Zero discharging system |
| CN107162084A (en) * | 2017-06-16 | 2017-09-15 | 浙江大学 | A kind of salt water treating system and its method with preposition heat exchanger and rear end deduster |
| CN107857321A (en) * | 2017-11-07 | 2018-03-30 | 西安协力动力科技有限公司 | A kind of technique for Waste Water From Fire Power Plant zero discharge treatment |
| CN108285188A (en) * | 2018-03-13 | 2018-07-17 | 南京常荣声学股份有限公司 | A kind of UTILIZATION OF VESIDUAL HEAT IN coordinated desulfurization wastewater zero discharge and the device and method for removing plume |
| CN209537028U (en) * | 2018-08-01 | 2019-10-25 | 华电电力科学研究院有限公司 | A kind of thermal power plant end high-salinity wastewater zero-emission processing system |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111410351A (en) * | 2019-01-07 | 2020-07-14 | 湖南军信环保股份有限公司 | Method for treating high-salinity wastewater |
| CN111410350A (en) * | 2019-01-07 | 2020-07-14 | 湖南军信环保股份有限公司 | Method for cooperatively treating high-salinity wastewater by using low-calorific-value combustible gas |
| CN111410350B (en) * | 2019-01-07 | 2022-05-27 | 湖南军信环保股份有限公司 | Method for cooperatively treating high-salinity wastewater by using low-calorific-value combustible gas |
| CN111410351B (en) * | 2019-01-07 | 2022-05-31 | 湖南军信环保股份有限公司 | Method for treating high-salinity wastewater |
| CN110064286A (en) * | 2019-04-12 | 2019-07-30 | 华电电力科学研究院有限公司 | A kind of cooling joint reducing agent of SNCR spray gun evaporates pyrolysis system and its working method |
| CN110064286B (en) * | 2019-04-12 | 2023-07-11 | 华电电力科学研究院有限公司 | SNCR spray gun cooling combined reducing agent evaporation pyrolysis system and working method thereof |
| CN111453803A (en) * | 2020-04-30 | 2020-07-28 | 成都市蜀科科技有限责任公司 | High-salinity wastewater low-temperature bypass thermal method concentration reduction and flue evaporation zero-discharge system |
| CN112607810A (en) * | 2020-12-14 | 2021-04-06 | 武汉天空蓝环保科技有限公司 | Air type desulfurization waste water enrichment facility and zero discharge system |
| CN112794539A (en) * | 2020-12-23 | 2021-05-14 | 华电水务工程有限公司 | System for treating high-salinity wastewater by using flue gas and treatment method thereof |
| CN113979502A (en) * | 2021-11-26 | 2022-01-28 | 南京诺克斯环保科技有限公司 | Zero-emission treatment system for evaporating waste water by utilizing flue hot gas of thermal power plant |
| CN114620791A (en) * | 2022-03-31 | 2022-06-14 | 西安交通大学 | System for concentrating desulfurization wastewater by utilizing flue gas waste heat in stepped manner |
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