CN108557930A - A kind of waste water from power plant device and method - Google Patents
A kind of waste water from power plant device and method Download PDFInfo
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- CN108557930A CN108557930A CN201810605577.3A CN201810605577A CN108557930A CN 108557930 A CN108557930 A CN 108557930A CN 201810605577 A CN201810605577 A CN 201810605577A CN 108557930 A CN108557930 A CN 108557930A
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- 238000000034 method Methods 0.000 title claims description 27
- 238000001704 evaporation Methods 0.000 claims abstract description 95
- 238000000889 atomisation Methods 0.000 claims abstract description 62
- 238000009834 vaporization Methods 0.000 claims abstract description 51
- 230000008016 vaporization Effects 0.000 claims abstract description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000003546 flue gas Substances 0.000 claims abstract description 29
- 239000007789 gas Substances 0.000 claims abstract description 27
- 238000009434 installation Methods 0.000 claims abstract description 23
- 239000000779 smoke Substances 0.000 claims abstract description 16
- 238000010521 absorption reaction Methods 0.000 claims description 11
- 238000011084 recovery Methods 0.000 claims description 7
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- 239000012141 concentrate Substances 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 3
- 238000010025 steaming Methods 0.000 claims 1
- 239000003570 air Substances 0.000 description 189
- 238000006477 desulfuration reaction Methods 0.000 description 29
- 230000023556 desulfurization Effects 0.000 description 29
- 230000008020 evaporation Effects 0.000 description 27
- 239000000428 dust Substances 0.000 description 19
- 239000007787 solid Substances 0.000 description 14
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- 239000000463 material Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 238000004064 recycling Methods 0.000 description 5
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- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 206010067482 No adverse event Diseases 0.000 description 1
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Classifications
-
- 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
-
- 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
-
- 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
Landscapes
- 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)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Treating Waste Gases (AREA)
Abstract
The technical issues of waste water from power plant device provided by the invention is for solving how to realize power plant effluent zero-emission, structure includes：Rotary atomizer, evaporating column deduster, concentration tower and atomization and vaporization tower；Atomization and vaporization tower is provided with hot-air distributor and evaporating column tank body；Hot-air distributor includes air duct and hot-air deflector；The outlet in air duct is connected to the inner cavity of evaporating column tank body；It is provided with rotary atomizer installation sleeve in the air duct of hot-air distributor, rotary atomizer is provided in rotary atomizer installation sleeve；Concentration tower is provided with waste water input interface, concentrated water output interface, concentration smoke inlet and concentration exhanst gas outlet；Concentrated water output interface is tightly connected by pipeline and rotary atomizer；Concentration smoke inlet and concentration exhanst gas outlet with power-plant flue gas discharge pipe for connecting；Evaporating column deduster is provided with dedusting access port and dust-free air outlet；Air outlet slit is connect with dedusting access port.Power plant effluent zero-emission can be achieved in the present invention.
Description
Technical field
The present invention relates to flue gas desulfurization operation wastewater processing technology fields, are filled more particularly, to a kind of waste water from power plant
It sets and method.
Background technology
Though wet desulfurizing process in the prior art can solve the basic technique problems of electric field wastewater treatment, operation step
Suddenly excessively complicated, processing procedure need to expend a large amount of manpower and materials, and sewage disposal expense is caused to become thermoelectricity operation pipe with excessively high
Very important financial burden in reason.
Chinese patent CN 106167283A are provided at a kind of Desulphurization for Coal-fired Power Plant waste water flue spray evaporation zero-emission
Device and method, including heat smoke allocation component, desulfurization wastewater atomizing component and hot secondary air jet component are managed, by described
Equipment makes the crystallization of the salt in desulfurization wastewater precipitation and dry, desulfurization wastewater zero-emission while cooperation-removal cigarette under realization high load capacity
Hg in gas；The technique is affected by unit load in actual use, and treating capacity is limited, flue-gas temperature after air preheater
It is relatively low；For the project of transformation project or installation low-level (stack-gas) economizer, due to shorter using flue length, evaporation is not thorough, also
Dust stratification and corrosion can be further resulted in.Chinese patent CN 107089755A provide evaporated with drying tower after a kind of concentration it is de-
Sulphur wastewater zero discharge system device, including pretreatment unit, film upgrading unit and air preheater bypass drying unit, by described
Equipment makes desulfurization wastewater evaporate, and realizes wastewater zero discharge, but the technique is as a result of film upgrading unit, system complex, investment
It is of high cost, and the reverse osmosis membrane used needs to regularly replace, operating cost is higher；The pre- place of setting before film concentrates is required simultaneously
Unit is managed, further increases cost of investment and operating cost, economy is poor, and will produce new waste sludge, pushes away
Wide difficulty is larger.
Further, a kind of undersaturation flue gas condensing crystallizing desulfurization wastewater zero discharge treatment is additionally provided in the prior art
System and method, including SCR denitration reaction tower, air preheater, crystallizing tower, deduster, concentration tower and desulfurizing tower, pass through institute
The lower flue gas of temperature stated between equipment utilization deduster and desulfurizing tower subtracts desulfurization wastewater progress temperature raising and concentration, concentration
Desulfurization wastewater after amount enters crystallizing tower, using the higher flue gas of a small amount of temperature in SCR denitration reaction tower exit to concentration after
Desulfurization wastewater be evaporated, so that it is evaporated crystallization.Fine solid particles object or salt after crystallization enter deduster, except
It is captured in dirt device, and eventually falls into ash bucket and arranged with outside flying dust, to realize the zero-emission of desulfurization wastewater.But due to the work
The fine solid particles object or salt that skill crystallizing tower is evaporated enter flying dust, cause heavy metal, chlorion in desulfurization wastewater
Etc. moving in flying dust, the comprehensive utilization of flying ash in electric power plant can be influenced, harsh power plant is uncomfortable for flying dust comprehensive utilization standard
With.
Therefore it provides a kind of waste water from power plant device and method, for solving at least one of above-mentioned technological deficiency
Just become those skilled in the art's technical problem urgently to be resolved hurrily.
Invention content
The object of the present invention is to provide a kind of waste water from power plant devices, for solving how to realize power plant effluent zero-emission
The technical issues of putting.
To achieve the goals above, on the one hand, the present invention provides a kind of waste water from power plant device, including：Rotary-atomizing
Device and concentration tower；Further include：Rotary atomizer, evaporating column deduster and concentration tower；Further include：Atomization and vaporization tower；The atomization
Evaporating column is provided with hot-air distributor and evaporating column tank body；The bottom of the evaporating column tank body is provided with air outlet slit and row
Grey mouth；The side wall at the top of the evaporating column tank body or evaporating column tank body upper end is arranged in the hot-air distributor；
The hot-air distributor includes air duct and the hot-air deflector that is arranged in the air duct；The outlet in the air duct and institute
The inner cavity for stating evaporating column tank body is connected；Rotary atomizer installation sleeve, institute are provided in the air duct of the hot-air distributor
It states and is provided with the rotary atomizer in rotary atomizer installation sleeve；The output end of the rotary atomizer and the evaporation
The inner cavity of tower tank body is connected；The concentration tower be provided with waste water input interface, concentrated water output interface, concentration smoke inlet and
Concentrate exhanst gas outlet；The concentrated water output interface is tightly connected by pipeline and the rotary atomizer installation sleeve；It is described dense
Contracting smoke inlet and concentration exhanst gas outlet, which are used to establish with power-plant flue gas discharge pipe, to be connected；The evaporating column deduster setting
There are dedusting access port and dust-free air outlet；The air outlet slit is tightly connected with the dedusting access port by pipeline.
Preferably, the concentration tower is provided with waste water circulating pump and demister；The concentration smoke inlet is connected with supercharging
Wind turbine；The upstream end of the concentration exhanst gas outlet and the booster fan is respectively provided with air flow control valve.
Preferably, the dust-free air outlet is connected with the second booster fan；The output end of second booster fan
It is connected with air flow control valve.
Preferably, the flow direction angulation of the hot-air deflector and air is adjustable.
Preferably, the arcuation plank that the hot-air deflector is fixed at by multi-disc in air duct forms.
Preferably, the hot-air deflector is made of alloy material.
Preferably, the hot-air deflector includes：Air turbulence deflector and air swirl deflector；The air
Turbulent deflector, relative to air-flow direction, is arranged in the air duct by leaf mosaic mode；The air swirl is led
Flowing plate is fixed at the outer wall of the rotary atomizer installation sleeve, is arranged by fan blade structure form.
Preferably, the evaporating column tank body includes the vertical tube part set gradually along gravity direction and cone bucket portion；The ash discharge
Mouth is arranged in the bottom end of the cone bucket portion；The air outlet slit is arranged in the vertical tube part or bores the side wall of bucket portion.
Preferably, further include waste water pump；The waste water pump is connected by pipeline with the rotary atomizer installation sleeve
It connects.
Preferably, the inlet in the air duct is provided with the first air valve；The air outlet slit is provided with the second air valve.
Preferably, first air valve and/or the second air valve are plate valve.
Preferably, first air valve and/or the second air valve are electric controlled regulating valve, or fasten and be provided with valve opening electricity
Control the air valve of regulating device.
To achieve the goals above, on the other hand, the present invention also provides a kind of waste water from power plant methods, before such as
The waste water from power plant device, the power plant are provided with denitrification apparatus, waste water tank, deduster, boiler induced-draft fan and absorption
Tower, described method includes following steps：
The waste water input interface of the concentration tower is established by the waste water tank being arranged in the first hydraulic pipeline and power plant and is connected
It connects, the setting of first hydraulic pipeline meets is led to the concentration tower by waste water from the waste water tank；
Rotary atomizer installation sleeve is established by the second hydraulic pipeline and concentrated water output interface and is connected, described second
The setting of hydraulic pipeline meets is led to the rotary atomizer installation sleeve by the waste water after concentration；
Concentration tower is connected in parallel, for connecting the off-gas recovery pipeline between boiler induced-draft fan and absorption tower；Institute
It states concentration smoke inlet and concentrates upstream end and downstream that exhanst gas outlet is connected to the off-gas recovery pipeline；
The air duct of hot-air distributor is connected with the hot-air pipeline that the air preheater exports；
The dedusting access port of the air outlet slit of atomization and vaporization tower and evaporating column deduster is tightly connected by pipeline.
Preferably, the denitrification apparatus is SCR denitration device.
Compared with waste water from power plant device in the prior art, this patent has the advantage that：
1, the operation principle of the present invention is that making full use of in the flue gas pipeline between connection boiler induced-draft fan and absorption tower
Waste water is made preliminary concentration by low-temperature flue gas in concentration tower, for assisted atomization evaporating column to the waste water after concentration do more into
The evaporation of one step is atomized.Wherein, the setting of concentration tower can substantially share the operating pressure of atomization and vaporization tower, reduce atomization and steam
The use demand of extraction hot air flowrate when sending out tower to work, reduces the quantity of steam that atomization and vaporization tower generates at work, and
The waste water treatment efficiency of atomization and vaporization tower can be substantially improved.Atomization and vaporization tower utilizes the power plant's high temperature for introducing hot-air distributor
Hot-air will flow into the concentration waste water in rotary atomizer and carry out rapid evaporation, formed in evaporating column tank body and steamed by high temperature
The mixture that remaining solid particulate matter is formed after vapour, waste water evaporation；Wherein, remaining solid particle after effluent part evaporation
Object can be deposited on evaporating column tank base, can be excluded through periodic maintenance；It is remaining after most of flue gas particle and waste water evaporation
Solid particulate matter can be transported to evaporating column deduster with high-temperature steam；The high temperature that is mixed with being discharged from evaporating column deduster steams
Vapour can be introduced without dust low stain flue gas to the cool air inlet air duct of the air preheater；It is high in evaporating column deduster
Warm steam will not condense, and remaining solid particulate matter can be dispelled efficiently after waste water evaporation, be integrated for chemical plant
Using or individually processing, and then heavy metal, the chlorion etc. in desulfurization wastewater will not move in flying dust, to plant dust catcher
The flyash ingredient of recycling causes harmful effect.The setting of above-mentioned waste water from power plant device makes full use of power plant's high-temperature flue gas
Heat can reach the technique effect of wastewater zero discharge, and the energy consumption to be generated when waste water from power plant can be greatly reduced；Into
One step, above structure can substitute three header desulfurizing waste water processing devices completely, can reduce the construction cost of power plant；This
Outside, when above structure being applied in the power plant that three header desulfurizing waste water processing devices have been arranged, moreover it is possible to further obtain efficient
Handle the technique effect of the desulfurization wastewater generated by three header desulfurizing waste water processing devices.
2, the evaporating column deduster being separately provided can reach the technique effect of flying ash in electric power plant classification recycling, avoid by mist
Change the flying dust that the off-gas recovery that the flying dust that the air that evaporating column is discharged recycles is discharged with air preheater obtains to be mixed, it is difficult to full
The recycling demand of sufficient down-stream enterprise.Meanwhile the higher flying dust of heavy metal, chloride ion content newly obtained, can more into
One step enriches the ash material type of power plant's recoverable, and can furnish ample material supply for new industrial grey demand.
3, flow velocity and promotion air of the setting of hot-air deflector for alleviating air uniformly mix in air duct,
And then the uniform temperature field of temperature is formed, help to improve the vaporization efficency of waste water.
4, hot-air deflector is set to arcuation plank, by changing between hot-air deflector and air-flow direction
Formed different angle, it is turbulent flow both to have facilitated air guiding, moreover it is possible to further reach the skill that turbulent air is converted to eddy flow
Art effect；By the way that air turbulence deflector and air swirl deflector are respectively set in air duct, can pacify in rotary atomizer
Encapsulation drum outer wall forms the uniform temperature field of temperature, and the evaporation vapour for importing waste water in evaporating column tank body can be substantially improved
Change efficiency.
5, the setting of evaporating column tank body cone bucket portion helps to collect to be deposited on after evaporating column tank interior waste water evaporates and be formed
Solid particle waste.
6, the setting of the first air valve and the second air valve implements maintenance and safeguards to provide for convenience of to waste water from power plant device
Great convenience.
7, the valve opening for the first air valve and the second air valve adds the function of automatically controlled adjusting, and cooperation adjusts rotary-atomizing
The flow of inlet water of device installation sleeve can reach the technique effect for adjusting evaporating column tank body hot-air output parameter in real time, ensure
Waste water fully evaporates in evaporating column tank body；Specifically, when evaporating column tank body hot air outlet temperature control not less than
At 115 degrees Celsius, the technique effect that waste water fully evaporates in evaporating column tank body can be reached, joined by stablizing above-mentioned work
Number, can facilitate the working efficiency of wastewater treatment equipment being promoted to maximization, and then the place of power plant effluent can be substantially improved
Manage efficiency.
8, said program of the present invention has：Connection relation is simple, and it is less to be related to structural elements, easy to maintain, takes up an area face
Product is small, is suitable for the processing all desulfurization wastewaters in coal-burning power plant, crystallization of the deduster being just configured with originally by power plant to generation
Salt carries out recycling capture, is the device and method that can really realize desulfurization wastewater zero-emission.
Description of the drawings
Fig. 1 is waste water of heat-engine plant waste gas cleaning system flow chart before the present invention improves；
Fig. 2 is the structural schematic diagram of waste water from power plant device in the embodiment of the present invention 1；
Fig. 3 is the structural schematic diagram of concentration tower in the embodiment of the present invention 1；
Fig. 4 is evaporating column deduster improved structure schematic diagram in the embodiment of the present invention 1；
Fig. 5 is the structural schematic diagram of hot-air deflector in the embodiment of the present invention 2；
Fig. 6 is evaporating column structural schematic diagram in the embodiment of the present invention 2；
Fig. 7 is waste water of heat-engine plant waste gas cleaning system flow chart in the embodiment of the present invention 3.
Specific embodiment
The embodiment of the present invention is described below in detail, since following embodiments are exemplary, it is intended to for explaining this hair
It is bright, and then be not considered as limiting the invention.
Shown in Fig. 1, the power-plant flue gas before present invention improvement and sewage disposal system structure chart.Wherein, it is generated by boiler
High temperature and high pressure flue gas is transported to SCR denitration device through economizer；The high-temperature flue gas flowed out from SCR denitration device is directed to sky
Pre- device；Cool ambient air in air preheater be blown into boiler in a manner of First air and Secondary Air after high-temperature flue gas heat exchange
For combustion-supporting；The high-temperature flue gas drawn from air preheater is by access deduster dedusting；The industrial dust obtained in dust removal process can
It is collected secondary comprehensive utilization；Flue gas after dedusting is sent by boiler induced-draft fan to absorption tower；The serum recycle being arranged in absorption tower
Pump is for promoting the slurries in tower to obtain fully absorbing for active ingredient in the circulating cycle；The gypsum slurries formed after precipitation are through stone
Cream discharge pump is exported to gypsum rotational flow station；What the gypsum raw material formed after being dehydrated by two level in gypsum rotational flow station can be stacked
Mode stores, so that down-stream enterprise recycles；It is handled through three header desulfurization wastewaters by the production waste water that gypsum rotational flow station generates
It is externally discharged after device processing.Waste water through waste water tank discharge in actual use still has certain pollution.
To overcome above-mentioned technological deficiency, the present invention to propose that a kind of waste water from power plant device, concrete scheme are as follows：
Embodiment 1：
As shown in Fig. 2, the present invention provides a kind of waste water from power plant device, including：Rotary atomizer 100, evaporating column remove
Dirt device 500 and concentration tower 400；Further include：Atomization and vaporization tower 300；The atomization and vaporization tower 300 is provided with hot-air distributor
310 and evaporating column tank body 320；The bottom of the evaporating column tank body 320 is provided with air outlet slit 321 and ash discharging hole 322；It is described
The side wall at the top of the evaporating column tank body 320 or 320 upper end of evaporating column tank body is arranged in hot-air distributor 310；
The hot-air distributor 310 includes air duct 311 and the hot-air deflector 312 being arranged in the air duct 311；The wind
The outlet in road 311 is connected with the inner cavity of the evaporating column tank body 320；It is provided in the air duct of the hot-air distributor 310
Rotary atomizer installation sleeve 200 is provided with the rotary atomizer 100 in the rotary atomizer installation sleeve 200；Institute
The output end 110 for stating rotary atomizer 100 is connected with the inner cavity of the evaporating column tank body；The concentration tower 400 is provided with useless
Water input interface 410, concentrated water output interface 420, concentration smoke inlet 430 and concentration exhanst gas outlet 440；The concentrated water output
Interface 420 is tightly connected by pipeline and the rotary atomizer 100；The concentration smoke inlet 430 and concentration flue gas go out
Mouth 440 is used for and power-plant flue gas discharge pipe is established and connected；The evaporating column deduster 500 is provided with 510 He of dedusting access port
Dust-free air outlet 520；The air outlet slit 321 is tightly connected with the dedusting access port 510 by pipeline.
Further, as shown in figure 3, in one of present invention optimal technical scheme, the concentration tower 400 is set
It is equipped with waste water circulating pump 450 and demister 460；The concentration smoke inlet is connected with booster fan 470；The concentration flue gas
Outlet and the upstream end of the booster fan are respectively provided with air flow control valve 480.
Further, as shown in figure 4, in one of present invention optimal technical scheme, the dust-free air discharge
Mouth 520 is connected with the second booster fan 530；The output end of second booster fan 530 is connected with air flow control valve
540。
Further, in one of present invention optimal technical scheme, the stream of the hot-air deflector and air
Dynamic direction angulation is adjustable.Hot-air deflector can be set as being flexibly connected with air duct inner wall, is passed through when actual fabrication
The best angulation between every hot-air deflector and the flow direction of air is arranged in running parameter in computer simulation air duct,
And then reach blocking air velocity, promote the technique effect of air dispersion mixing, contributes to form the high temperature temperature of stable uniform
Field is spent, convenient for flowing into the waste water flash evapn atomization in rotary atomizer installation sleeve, the pollutant being dissolved in waste water can
It is detached with vapor in a manner of granulating rapidly.
Further, in one of present invention optimal technical scheme, the hot-air deflector is fixed by multi-disc
The arcuation plank composition being arranged in air duct.
Further, in one of present invention optimal technical scheme, the hot-air deflector is by alloy material
It is made.
Further, in one of present invention optimal technical scheme, the evaporating column tank body includes along gravity side
To the vertical tube part and cone bucket portion set gradually；The ash discharging hole is arranged in the bottom end of the cone bucket portion；The air outlet slit setting
In the vertical tube part or the side wall of cone bucket portion.
Further, further include waste water pump in one of present invention optimal technical scheme；The waste water pump is logical
Pipeline is crossed with the rotary atomizer to be connected.The setting of waste water pump by the waste water generated in power plant for being actively delivered to rotation
Turn atomizer installation sleeve, to reach the technique effect of purification of waste water automation.Further, by adjusting the defeated of waste water pump
Go out power and coordinate operating temperature in current hot-air distributor, the output power of waste water pump can be adjusted to and meet waste water and fill
Divide under the premise of evaporation atomization, waste water supply amount is realized and is maximized, and then reaches evaporation fogization work in adjusting evaporating column tank body
The technique effect of saturation factor.Specifically, the outlet temperature at the air outlet slit for passing through monitoring evaporating column tank base, ensures it
Always it is not less than 115 degrees Celsius, can knows whether the waste water in current supply obtains adequately evaporating atomization, actual use
In, it is under the premise of hot-air distributor air inflow maximizes, the outlet temperature at the air outlet slit of evaporating column tank base is steady
It is scheduled between 115 to 120 degrees Celsius, is both to maximize by the improved efficiency of purification of waste water under current operating parameters.
It should be noted that the structure of above-mentioned rotary atomizer be the prior art therefore its detailed construction in the present embodiment not
It further illustrates and repeats.
Embodiment 2：
As shown in figure 5, the present embodiment, on the basis of embodiment 1, the hot-air deflector 312 includes：Air turbulence
Deflector 3121 and air swirl deflector 3122；The air turbulence deflector 3121 is in the air duct relative to air
Flow direction is arranged by leaf mosaic mode；The air swirl deflector 3122 is fixed at the rotary atomizer
The outer wall of installation sleeve 200 is arranged by fan blade structure form.
The setting of air turbulence deflector changes into the flow regime of air in air duct for stopping air velocity
Turbulent condition helps to reach air and is uniformly filled in air duct, forms the relatively uniform high temperature for meeting carburation by evaporation condition of temperature
Temperature field；The setting of air swirl deflector helps the air of turbulent condition being transformed into eddy flow, and then contributes to high temperature
Flue gas is occurred acutely by the tube wall of rotary atomizer installation sleeve with the atomized drop in rotary atomizer installation sleeve
Heat exchange, cause the output of rotary atomizer directly eject evaporation vapor be atomized and the solid-state crystallized out give up
Gurry particle.
It should be noted that the connection status of above-mentioned air turbulence deflector 3121 and air swirl deflector 3122 is equal
To be fixedly connected with adjacent component, will not deflect because of air-impingement, heated air deflector stops during air is advanced,
Its direction of advance and forward speed will receive corresponding influence.
Further, as shown in fig. 6, in one of present invention optimal technical scheme, the inlet in the air duct
It is provided with the first air valve 301；The air outlet slit is provided with the second air valve 302.
Further, in one of present invention optimal technical scheme, first air valve and/or the second air valve
For plate valve.
Further, in one of present invention optimal technical scheme, first air valve and/or the second air valve
Electric controlled regulating valve, or fastening are provided with the air valve of the automatically controlled regulating device of valve opening.
Embodiment 3：
The present embodiment on the basis of the above embodiments, also provides a kind of waste water from power plant method, using as previously described
Waste water from power plant device, the power plant is provided with denitrification apparatus, waste water tank, deduster, boiler induced-draft fan and absorption tower,
Described method includes following steps：
The waste water input interface of the concentration tower is established by the waste water tank being arranged in the first hydraulic pipeline and power plant and is connected
It connects, the setting of first hydraulic pipeline meets is led to the concentration tower by waste water from the waste water tank；
Rotary atomizer installation sleeve is established by the second hydraulic pipeline and concentrated water output interface and is connected, described second
The setting of hydraulic pipeline meets is led to the rotary atomizer installation sleeve by the waste water after concentration；
Concentration tower is connected in parallel, for connecting the off-gas recovery pipeline between boiler induced-draft fan and absorption tower；Institute
It states concentration smoke inlet and concentrates upstream end and downstream that exhanst gas outlet is connected to the off-gas recovery pipeline；
The air duct of hot-air distributor is connected with the hot-air pipeline that the air preheater exports；
The dedusting access port of the air outlet slit of atomization and vaporization tower and evaporating column deduster is tightly connected by pipeline.
Further, in one of present invention optimal technical scheme, the denitrification apparatus is SCR denitration device.
Specifically, as shown in fig. 7, the waste water of heat-engine plant waste gas cleaning system flow chart that the present embodiment is provided, utilizes cigarette
Gas waste heat is evaporated concentration to desulfurization wastewater, and hot Secondary Air or heat primary air after air preheater heating is then utilized to make
Rapid evaporation is carried out to waste water after concentration for heat source, investment, the operating cost of wet desulphurization wastewater zero discharge is reduced, does not influence
The comprehensive utilization of flying dust.
Wherein, including desulfurization wastewater concentration systems and evaporation collection system：
(1) concentration systems are evaporated concentration using the fume afterheat after boiler induced-draft fan to desulfurization wastewater, draw from boiler
Draw at fan outlet to the air duct of absorption tower entrance and connect bypass air duct to concentration tower booster fan entrance, the concentrated tower of flue gas increases
Enter concentration tower entrance after pressure fan supercharging, inversely contacted with the drop after atomization in concentration tower, after being evaporated concentration
The concentrated tower outlet discharge of flue gas, then draw at the inlet conduits for being connected to absorption tower.The water inlet of the concentration tower passes through water inlet
Pipeline is connected to waste water tank, and waste water pump is arranged on water inlet line, and waste water is delivered to evaporating column by waste water pump.Waste water enters
It is stored in the stock tank of evaporating column after evaporating column, evaporating column top is delivered to by the waste water circulating pump of evaporating column, is connect with flue gas
It touches and is concentrated by evaporation, the waste water after concentration is constantly enriched in stock tank, after reaching certain index, is delivered to by concentrated water delivery pump
The processing of atomization and vaporization system.The wastewater source of waste water tank can come from the outlet of three header desulfurization wastewater disposal plants, can also
Overflow from gypsum rotational flow station.When wastewater source comes from gypsum rotational flow station overflow, three header desulfurization wastewaters have been built
Disposal plant can stop transport, and three header desulfurization wastewater disposal plants can be no longer arranged in grassroot project.
(2) evaporation collection system concentrates concentration systems using the hot Secondary Air or heat primary air of power plant's air preheater outlet
Rear desulfurization wastewater carries out rapid evaporation, draw on the hot Secondary Air or heat primary air pipeline exported from air preheater connect hot-air to
Atomization and vaporization tower, by drawing the high-temperature hot air taken over by the desulfurization wastewater drop evaporation drying after atomization, after evaporation drying
Hot-air and the particulate matter of generation draw the inlet conduits for being connected to evaporating column deduster by atomization and vaporization tower outlet conduits,
Grain object comprehensively utilizes after the collection of evaporating column deduster, passes through evaporating column booster fan by the purified hot-air of evaporating column
Draw through air duct after boosting and be connected on the cold-air duct of air preheater entrance, is reused after air preheater heats.The evaporation is dry
The water inlet of dry tower is connected to concentration tower by water inlet line, concentrated water delivery pump is arranged on water inlet line, to meet atomized drop
Required pressure.
Further, in one of present invention optimal technical scheme, the concentration tower has concentration tower ontology, enters
One's intention as revealed in what one says road, outlet conduits, concentration tower inlet baffle, concentration tower outlet damper, concentration tower booster fan, waste water circulating pump, waste water
Spraying layer, waste water atomizer, demister, concentrated water delivery pump, waste water densitometer composition；
Further, in one of present invention optimal technical scheme, concentration tower ontology include lower part stock tank area,
Middle part atomization and vaporization enrichment region, top mist eliminating zone, stock tank bottom being provided with emptying door, being emptied when for overhauling, concentration tower ontology
It is made of carbon steel+corrosion-inhibiting coating or (such as FRP or PPH etc.) is made using modified resistant material.
Further, in one of present invention optimal technical scheme, waste water spraying layer is made of FRP materials,
For the pipe network structure of covering concentration tower section, the entrance of waste water spraying layer is connected with waste water circulating-pump outlet, will be in stock tank area
Waste water is delivered to waste water spraying layer；The pipe network terminal of waste water spraying layer is installed with several waste water atomizers；
Further, in one of present invention optimal technical scheme, waste water atomizer uses ceramic material system
Make, structure is hollow cone or solid wimble structure, meets the waste water grain size after atomization between 1500 microns to 2500 microns；
The quantity of the installed waste water atomizer of single layer waste water spraying layer, meets the requirement of concentration tower coverage rate 150%~250%.
Further, in one of present invention optimal technical scheme, it is exported in waste water spraying layer and concentration tower
Between be installed with demister, by the drop carried in flue gas collect, with prevent drop downstream equipment surface scale accumulate；Demisting
Device uses baffle plate type structure, material to use FRP or PPH.
Further, in one of present invention optimal technical scheme, waste water circulating pump uses centrifugal pump, and useless
It is connected using unit style between water spray layer, flow, lift meet the requirement of waste water atomizer.
Further, in one of present invention optimal technical scheme, concentration tower is provided with waste water densitometer, uses
To monitor the density of waste water in concentration tower, when density hit the target, start concentrated water delivery pump, it is defeated to atomization and vaporization tower
Send waste water.
Further, in one of present invention optimal technical scheme, pulse is provided in the stock tank of concentration tower lower part
Levitation device, to prevent slurries from depositing.
Further, in one of present invention optimal technical scheme, concentration is installed at concentration tower inlet conduits
Tower booster fan, to overcome flue gas to pass through the required resistance of concentration and evaporation system.
Further, in one of present invention optimal technical scheme, concentration tower inlet baffle, concentration tower outlet
Baffle is switching mode,, can be real by closing concentration tower inlet baffle and concentration tower outlet damper when concentration tower needs maintenance
Existing on-bne repair；
Further, in one of present invention optimal technical scheme, the waste water tank can be useless with three header desulfurization
Water disposal plant is connected, and can also be connected with gypsum rotational flow station overflow pipe, and the solid content of waste water requires to be not more than 25% in waste water tank
.
Further, in one of present invention optimal technical scheme, the waste water tank setting jacking-type stirs
Device, to prevent slurries in waste water tank from depositing；
Further, in one of present invention optimal technical scheme, the waste water tank passes through waste water pump and pipeline
It is connected with concentration tower；
Further, in one of present invention optimal technical scheme, the atomization and vaporization tower is by atomization and vaporization tower
Ontology, rotary atomizer, air distributor, atomization and vaporization tower inlet conduits, atomization and vaporization tower outlet conduits, atomization and vaporization tower
Deduster, atomization and vaporization tower booster fan, atomization and vaporization tower inlet baffle, atomization and vaporization tower outlet damper composition；
Further, in one of present invention optimal technical scheme, the atomization and vaporization tower ontology includes atomization
Evaporating column direct tube section and atomization and vaporization tower cone segments, the atomization and vaporization tower cone segments bottom is equipped with ash discharging hole, when for overhauling
Ash discharge, direct tube section and conical cylinder section are made of carbon steel；
Further, in one of present invention optimal technical scheme, rotary atomizer is rotated using high speed centrifugation
Atomizer, rotating speed, can be with variable frequency adjustments between 10000~15000rpm, and the waste water size droplet diameter after atomization is micro- 40~70
Between rice, the atomizing wheel of rotary atomizer uses alloy material or ceramic material；
Air distributor is the guide vane of one group of adjustable-angle, is made of alloy material；
Preferably, rotary atomizer, air distributor and inlet conduits are arranged in the top of atomization and vaporization tower, outlet
Air duct is arranged in the cone cylinder bottom of atomization and vaporization tower；
Further, in one of present invention optimal technical scheme, atomization and vaporization tower inlet conduits and air preheater
Hot Secondary Air or heat primary air the pipeline connection of outlet, hot-air is drawn be connected to after relying on atomization and vaporization tower booster fan to boost
Atomizing dry tower；
Further, in one of present invention optimal technical scheme, atomization and vaporization tower inlet baffle is adjustment type
Baffle exports setting hot air temperature on-line monitoring instrument in atomization and vaporization tower, can export hot-air temperature according to atomization and vaporization tower
Controllable register position is spent, and then controls the hot air flowrate entered in atomization and vaporization tower or the waste water for entering rotary atomizer
Flow；
Further, in one of present invention optimal technical scheme, atomization and vaporization tower outlet conduits and evaporating column
The air duct of deduster entrance connects, and the vapor, particulate matter after atomization and vaporization enter with hot-air at evaporating column deduster purification
Reason；
Further, in one of present invention optimal technical scheme, cloth bag can be used in atomization and vaporization tower deduster
Deduster or electrostatic precipitator, by after evaporation drying fine solid particles or salt collect in atomization and vaporization tower deduster
In ash bucket, purified hot-air draws via atomization and vaporization tower house outlet air duct is connected to atomizing dry tower booster fan
Import.
Further, in one of present invention optimal technical scheme, purified hot-air is through atomizing dry tower
After booster fan supercharging, draws and be connected on air preheater entrance cold-air duct, reenter air preheater heat temperature raising.
Further, in one of present invention optimal technical scheme, atomization and vaporization tower outlet damper is switching mode
Baffle, when atomization and vaporization tower needs maintenance, by closing inlet conduits baffle and outlet conduits baffle, it can be achieved that online inspection
It repaiies；
Further, in one of present invention optimal technical scheme, the water inlet of the rotary atomizer with it is dense
The concentrated water conveying pump discharge of contracting tower is connected, and the solid content of waste water requires to be not more than 25% in concentration tower.
Compared with waste water from power plant device in the prior art, this patent has the advantage that：
1, the present invention is adaptable for waste water solid content to be treated, can handle solid content 25% hereinafter, pH value
Waste water between 5~8；It, can be with for having built sewage pretreatment device (three header desulfurization wastewater disposal plants etc.)
Stoppage in transit sewage pretreatment device reduces operating maintenance expense；For grassroot project, sewage pretreatment device can be directly omitted, is dropped
Low project cost.
2, deduster is separately provided in the deduster of drying tower outlet, and the mixed salt after drying is collected separately, is not removed with former power plant
The ash that dirt device is collected mixes and (does not influence the comprehensive utilization that original plant dust catcher collects ash content), is comprehensively utilized after being collected separately.
3, the hot-air of air preheater outlet is compared with heat smoke, and entrained Dust Capacity is greatly lowered, after such crystallizing and drying
The mixed salt of generation only has the solid brought into waste water so that the mixed salt amount after crystallizing and drying is greatly reduced.
4, apparatus of the present invention concentration tower uses hollow-spraying-tower structure, and concentration tower tower internals are few, and resistance is low, failure rate is low.
5, the present invention is useless to the desulfurization of atomization as heat source using the hot Secondary Air of power plant's air preheater outlet or heat primary air
Water carries out rapid evaporation, and hot air temperature is high, and evaporation time is short, what the drop and evaporation that desulfurization wastewater can be made to be atomized generated
Crystalline particle rapid draing before entering atomization and vaporization tower deduster, avoids the grain of salt crystals of surface moisture to upstream device
Corrosion and scaling, contamination risk；
6, the present invention be utilized respectively low-temperature flue gas after boiler induced-draft fan and the outlet of power plant's air preheater hot Secondary Air or
The heat of heat primary air, gradient is concentrated and is evaporated to desulfurization wastewater, more energy saving；
7, it is individually comprehensive after the particulate matter after atomization and vaporization of the present invention or salt are collected by atomization and vaporization tower deduster
It utilizes, does not enter back into the flying dust that former plant dust catcher is collected, do not influence the comprehensive utilization of former flying ash in electric power plant；
8, inlet porting baffle and outlet damper of the present invention are, it can be achieved that on-bne repair, the safe and reliable operation to host
It has no adverse effects；
9, the present invention has automatic regulation function, can adjust feed water flow according to the outlet hot air temperature of atomization and vaporization tower
Amount or the hot air flowrate for entering evaporating column ensure waste water evaporating completely；
10, flow of the present invention is simple, take up little area, investment cost is few, operating cost is low, without adding any pretreatment medicine
Agent carries out recycling capture by newly-increased atomization and vaporization tower deduster to the particulate matter or crystal salt of generation, does not influence former power plant
The comprehensive utilization of flying dust.
The various embodiments described above are only the preferred embodiment of the present invention, in the art, every to be based on skill of the present invention
Changes and improvements in art scheme should not exclude except protection scope of the present invention.
Claims (10)
1. a kind of waste water from power plant device, including：Rotary atomizer, evaporating column deduster and concentration tower；It is characterized in that, also
Including：Atomization and vaporization tower；The atomization and vaporization tower is provided with hot-air distributor and evaporating column tank body；The evaporating column tank body
Bottom is provided with air outlet slit and ash discharging hole；The hot-air distributor is arranged in the top of the evaporating column tank body or the steaming
Send out the side wall of tower tank body upper end；The hot-air distributor includes air duct and the hot-air deflector that is arranged in the air duct；
The outlet in the air duct is connected with the inner cavity of the evaporating column tank body；It is provided with rotation in the air duct of the hot-air distributor
Atomizer installation sleeve is provided with the rotary atomizer in the rotary atomizer installation sleeve；The rotary atomizer
Output end is connected with the inner cavity of the evaporating column tank body；The concentration tower be provided with waste water input interface, concentrated water output interface,
Concentrate smoke inlet and concentration exhanst gas outlet；The concentrated water output interface is tightly connected by pipeline and the rotary atomizer；
The concentration smoke inlet and concentration exhanst gas outlet, which are used to establish with power-plant flue gas discharge pipe, to be connected；The evaporating column deduster
It is provided with dedusting access port and dust-free air outlet；The air outlet slit, which is sealed with the dedusting access port by pipeline, to be connected
It connects.
2. waste water from power plant device according to claim 1, which is characterized in that the concentration tower is provided with waste water cycle
Pump and demister；The concentration smoke inlet is connected with the first booster fan；The concentration exhanst gas outlet and first supercharging
The upstream end of wind turbine is respectively provided with air flow control valve.
3. waste water from power plant device according to claim 1, which is characterized in that the dust-free air outlet is connected with
Second booster fan；The output end of second booster fan is connected with air flow control valve.
4. waste water from power plant device according to claim 1, which is characterized in that the hot-air deflector and air
Flow direction angulation is adjustable；The hot-air deflector includes：Air turbulence deflector and air swirl deflector；Institute
Air turbulence deflector is stated in the air duct relative to air-flow direction, is arranged by leaf mosaic mode；The air
Impeller guide plate is fixed at the outer wall of the rotary atomizer installation sleeve, is arranged by fan blade structure form.
5. waste water from power plant device according to claim 1, which is characterized in that the evaporating column tank body includes along gravity
The vertical tube part and cone bucket portion that direction is set gradually；The ash discharging hole is arranged in the bottom end of the cone bucket portion；The air outlet slit is set
Set in the vertical tube part or bore the side wall of bucket portion.
6. waste water from power plant device according to claim 1, which is characterized in that further include waste water pump；The waste water pump
It is connected with the rotary atomizer by pipeline.
7. waste water from power plant device according to claim 1, which is characterized in that the inlet in the air duct is provided with
One air valve；The air outlet slit is provided with the second air valve.
8. waste water from power plant device according to claim 7, which is characterized in that first air valve and/or the second gas
Valve is plate valve.
9. waste water from power plant device according to claim 7, which is characterized in that first air valve and/or the second gas
Valve is electric controlled regulating valve, or fastening is provided with the air valve of the automatically controlled regulating device of valve opening.
10. a kind of waste water from power plant method, using the waste water from power plant device described in any one of claim 1 to 9,
The power plant is provided with denitrification apparatus, waste water tank, deduster, boiler induced-draft fan and absorption tower, and described method includes following steps：
The waste water input interface of the concentration tower is established by the waste water tank being arranged in the first hydraulic pipeline and power plant and is connected, institute
Waste water is led to the concentration tower by the setting satisfaction for stating the first hydraulic pipeline from the waste water tank；
Rotary atomizer is established by the second hydraulic pipeline and concentrated water output interface and is connected, the setting of second hydraulic pipeline
Meet and the waste water after concentration is led to the rotary atomizer；
Concentration tower is connected in parallel, for connecting the off-gas recovery pipeline between boiler induced-draft fan and absorption tower；It is described dense
Contracting smoke inlet and concentration exhanst gas outlet are connected to the upstream end and downstream of the off-gas recovery pipeline；
The air duct of hot-air distributor is connected with air preheater outlet hot-air pipeline；
The dedusting access port of the air outlet slit of atomization and vaporization tower and evaporating column deduster is tightly connected by pipeline.
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| CN108557930B (en) | 2024-04-16 |
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