CN109879345A - A kind of coal-burning power plant's high slat-containing wastewater governing system and method - Google Patents
A kind of coal-burning power plant's high slat-containing wastewater governing system and method Download PDFInfo
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- CN109879345A CN109879345A CN201910279818.4A CN201910279818A CN109879345A CN 109879345 A CN109879345 A CN 109879345A CN 201910279818 A CN201910279818 A CN 201910279818A CN 109879345 A CN109879345 A CN 109879345A
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- 239000002351 wastewater Substances 0.000 title claims abstract description 182
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000003517 fume Substances 0.000 claims abstract description 39
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000003546 flue gas Substances 0.000 claims abstract description 24
- 238000001704 evaporation Methods 0.000 claims abstract description 12
- 239000002245 particle Substances 0.000 claims abstract description 11
- 230000008020 evaporation Effects 0.000 claims abstract description 9
- 230000009471 action Effects 0.000 claims abstract description 4
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical group O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 57
- 239000007921 spray Substances 0.000 claims description 21
- 238000000227 grinding Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 10
- 239000000945 filler Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000006477 desulfuration reaction Methods 0.000 abstract description 9
- 230000023556 desulfurization Effects 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 4
- 239000011805 ball Substances 0.000 description 27
- 239000013618 particulate matter Substances 0.000 description 7
- 239000007789 gas Substances 0.000 description 5
- 239000000919 ceramic Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 238000000889 atomisation Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 239000003082 abrasive agent Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000012267 brine Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000007701 flash-distillation Methods 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- -1 removing Substances 0.000 description 2
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011325 microbead Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000011236 particulate material Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The invention discloses a kind of coal-burning power plant's high slat-containing wastewater governing system and methods, comprising: waste water tank, for storing high-salt wastewater；Waste water pump is connected to waste water tank, for the high-salt wastewater in transport wastewater case；Air-introduced machine, for conveying hot fume；Rotatable rotary drum evaporator is connected to waste water pump, air-introduced machine respectively, and high-salt wastewater is pumped into the rotary drum evaporator under rotary state by waste water, and hot fume is sent into rotary drum evaporator by air-introduced machine；For high-salt wastewater under the action of hot fume, evaporation forms crystalline particle object；Abrasive body, the rotary drum evaporator under rotary state, after driving the abrasive body to grind the crystalline particle object, as hot fume is discharged outside the rotary drum evaporator are provided in rotary drum evaporator.The system run all right, equipment volume is small, and occupied area is small, flexible arrangement.Using the temperature evaporating waste water of boiler hot flue gas, achieve the purpose that control useless and desulfurization wastewater zero-emission with waste water, there are the advantages such as with low investment, operating cost is low.
Description
Technical field
The present invention relates to the deep treatment fields for the high slat-containing wastewater that limestone-gypsum wet desulfuration system generates, and specifically relate to
And a kind of coal-burning power plant's high slat-containing wastewater governing system and method.
Background technique
China is that maximum coal production country and raw coal consume big country in the world.The atmosphere pollution that fire coal generates
Mainly there are dust, SO2And NOXDeng wherein SO2Discharge amount occupies first place in the world.Limestone-gypsum wet flue gas desulfurization technology (W-
It FGD is) coal-burning power plant using one of most extensive polluted gas control technology, however wet desulfurization system will generate in operation
High slat-containing wastewater more than a certain amount of complicated component, pollutant kind.As " ten, water " gradually promotes, at existing desulfurization wastewater
Reason technology can not meet environmental requirement, " zero " of desulfurization wastewater discharge by be coal-burning power plant's wastewater treatment a kind of trend.
Desulfurization wastewater " zero " discharge at present generallys use the mode of bypass flue evaporation, is atomized into waste water by atomizer
30~80 μm of drop sprays into high-temperature flue gas, and fine droplets enter rear end deduster with flue gas by rapid evaporation, crystalline particle object
It is captured；The atomization of waste water can be realized by spray gun or rotary atomizer, two ways have the characteristics that it is different, using spray gun mist
The project of change, system is simple, cheap, but spray gun easily blocks, fluctuation of service；The project being atomized using rotary atomizer,
It solves spray gun blockage problem, but system complex, involves great expense.
Summary of the invention
The object of the present invention is to provide a kind of coal-burning power plant's high slat-containing wastewater governing system and method, system does not have to setting
Atomizer, pipeline will not block, and system run all right, equipment volume is small, and occupied area is small, flexible arrangement.
Technical solution provided by the invention is as follows:
A kind of coal-burning power plant's high slat-containing wastewater governing system, comprising:
Waste water tank, for storing high-salt wastewater；
Waste water pump is connected to the waste water tank, for conveying the high-salt wastewater in the waste water tank；
Air-introduced machine, for conveying hot fume；
Rotatable rotary drum evaporator is connected to the waste water pump, air-introduced machine respectively, and the high-salt wastewater passes through described useless
Water pump is sent into the rotary drum evaporator under rotary state, and the hot fume is sent into the roller evaporation by the air-introduced machine
In device；For the high-salt wastewater under the action of hot fume, evaporation forms crystalline particle object；
Abrasive body is provided in the rotary drum evaporator, the rotary drum evaporator under rotary state drives the grinding
After body grinds the crystalline particle object, as hot fume is discharged outside the rotary drum evaporator.
In the technical program, boiler generate hot fume by air-introduced machine be connected be connected to the rotary drum evaporator flue gas into
Mouthful, in the rotary drum evaporator, brine waste is sprayed at abrasive body surface and increases surface area and come into full contact with high-temperature flue gas
And be evaporated, solid particulate matter is obtained, biggish particulate matter drives the abrasive body to collide by the rotation of roller, is ground into thin
Finely ground particle substance, as hot fume is discharged, the rotary drum evaporator carries out subsequent step by the deduster of rear end to tiny particulate matter
It captures.
The system run all right, equipment volume is small, and occupied area is small, flexible arrangement, does not have to setting atomizer, pipeline will not
Blocking, system run all right, wherein rotary drum evaporator and flue use flanged joint, maintenance convenience.Utilize boiler hot flue gas
Temperature evaporating waste water achievees the purpose that control useless and desulfurization wastewater zero-emission with waste water, and it is excellent to have that with low investment, operating cost is low etc.
Gesture.
Preferably, the rotary drum evaporator includes outer cylinder:
The outer barrel is provided with rotatable inner cylinder, and the top and bottom of the inner cylinder are in Openworks shape, described with high salt
Waste water is pumped into the inner cylinder under rotary state by the waste water；
The abrasive body is located in the inner cylinder, and the diameter of the abrasive body is greater than the hole of the bottom opening of the inner cylinder
Diameter.
In the technical program, Openworks shape will be arranged at the top and bottom of the inner cylinder, enable high-temperature flue gas described
It circulates in inner cylinder, and sets smaller than the diameter of the abrasive body for the aperture of the inner cylinder bottom, institute can be prevented
It states abrasive body to fall when being rotated, it is ensured that grind the stability of body running.
Preferably, the outer barrel is provided with power blade, and the power blade is connected to the inner cylinder by shaft,
The power blade drives the inner cylinder to rotate under the flowing of the hot fume.
In the technical program, the rotary drum evaporator is not necessarily to external drive, and inner cylinder arranges power blade, passes through the air inducing
While high-temperature flue gas is passed through in the rotary drum evaporator by machine, wind energy is provided and pushes the power blade rotation, so that
Rotary drum evaporator inner cylinder is rotated by the power blade, is a kind of mode from driving.
Preferably, two supporting elements are fixed in the outer cylinder, the supporting element cross-sectional area is less than the outer cylinder
Internal cross-sectional area, the power blade, inner cylinder are sequentially located at described two supporting elements along the flow direction of the hot fume
Between, and the end of the shaft is stretched to respectively and is rotationally connected with the supporting element.
Preferably, the side wall of the inner cylinder is fixedly connected by fixedly connected part with the power blade, it is ensured that knot
The stabilization of structure.
Preferably, the supporting element is rodlike hollow structure, and the supporting element is rodlike hollow structure, the supporting element
End is arranged in the side wall of the outer cylinder, and the supporting element and the outer cylinder junction are equipped with oil filler point.
It is easy to lubricate to reach shaft by adding oil filler point outside rotary drum evaporator in the technical program, it improves and turns
The purpose in axis service life.When oiling, oil liquid flows into supporting element through oil filler point, lubricating action is played to shaft, when rotating shaft
Frictional force reduce；The impurity in supporting element is discharged with oil liquid in the replacement of shaft oil liquid, and the accumulation damage because of impurity is avoided to turn
Axis, extends the service life of shaft, to improve the reliability of roller evaporation work, safety.
Preferably, the annular groove protruded into for waste water spray head, the waste water spray head are offered on the roof that the inner cylinder leans on
It is fixed on the outer cylinder and is connected to by waste water delivery pipe with the waste water pump；The inner cylinder is rotated relative to the outer cylinder
When, the waste water spray head is stationary relative to the outer cylinder.
In the technical program, by the way that waste water spray head is extended into the annular groove pre-set, when the rotary drum evaporator
When rotation, waste water is sprayed at abrasive body surface by waste water spray head, and by the rolling of abrasive body, waste water obtains high specific surface area
It is come into full contact with afterwards with hot fume, in this way the rotation of rotary drum evaporator, and then realizes " flash distillation " of waste water, do not have to setting atomization
Device, pipeline will not block, system run all right, while waste water pump reduces waste water pump power, energy without atomizing pressure is provided
Consumption reduces.
Preferably, the rotary drum evaporator is inclined type, and tilt angle with respect to the horizontal plane is 20 °~60 °.
In the technical program, rotary drum evaporator is set as to be 20 °~60 ° of inclined type for tilt angle, can make to grind
The surface area of body is bigger, improves space utilization rate.
Preferably, the inner cylinder is rough surface；
And/or
The abrasive body is zirconia ball.
In the technical program, the rotary drum evaporator inner cylinder uses rough surface, zirconia ball can be promoted sufficiently to roll,
Improve the heat utilization efficiency of flue gas.Zirconia ball is mainly used in the extra-fine grinding and dispersion of high viscosity, high rigidity material, and can
To reach no pollution.Since zirconia ball real density is big, there is bigger grinding kinetic energy, grinding effect under equal motion speed
Rate is 2~3 times higher than conventional ceramic microballon, so can obtain more preferably effect using zirconia ball.Due to zirconium ball ZrO2
Content is high, have many advantages, such as high density, high tenacity, low abrasion, without broken ball, removing, abrasive material is dispersed to pollute small.Wear resistance ratio is general
Logical ceramic microbead is 4~10 times low.That there are also stabilities is good for zirconia ball, acid and alkali resistance burn into circularity is good, surface is smooth, without gas
Hole has the characteristics that specular gloss, easy cleaning, use cost are low.
Preferably, waste water box mixer is equipped in the waste water tank, the water outlet of the waste water pump also passes through return of waste water
Pipe is connected to the waste water tank.
In the technical program, the waste water box mixer is used to the waste water that stirring desulphurization system generates, containing in the waste water
Gu amount is higher, and has certain residence time, the suspended matter in waste water can be dispersed in by waste water box mixer
In solution, it is prevented to be deposited in waste water tank bottom, enables waste water pump stable operation.
The present invention also provides a kind of coal-burning power plant's high slat-containing wastewater administering methods, it is characterised in that:
High-salt wastewater in waste water tank is delivered to rotary drum evaporator by waste water pump, is sprayed by the waste water of the rotary drum evaporator
Head is sprayed at zirconia ball surface；
The hot fume generated in boiler is conducted to the rotary drum evaporator by air-introduced machine, makes to be sprayed at the zirconia ball
The waste water on surface comes into full contact with and is evaporated with hot fume, and particulate matter is discharged after zirconia ball grinding with hot fume.
Preferably, flue gas velocity of liquid assets is 8~15m/s in the rotary drum evaporator.
In the technical program, flue gas flow rate is controlled can guarantee hot fume and waste water on zirconia ball in 8~15m/s
Contact sufficiently and be evaporated.
In conclusion a kind of coal-burning power plant's high slat-containing wastewater deep treatment system and method for the present invention may be implemented following to have
Beneficial effect:
1, higher specific surface area is obtained by the way that waste water is sprayed at zirconia ball surface, and then realizes " dodging for waste water
Steam ", do not have to setting atomizer, pipeline will not block, system run all right；
2, waste water pump is not required to provide atomizing pressure, and waste water pump power is small, and low energy consumption；
3, rotary drum evaporator and flue cross-section, flue gas flow rate is selected as 8~15m/S in inner cylinder, and equipment volume is small, land occupation
Area is small, flexible arrangement；
4, rotary drum evaporator and flue use flanged joint, maintenance convenience.
Detailed description of the invention
Below by clearly understandable mode, preferred embodiment is described with reference to the drawings, to above-mentioned characteristic of the invention, skill
Art feature, advantage and its implementation are further described.
Fig. 1 is a kind of schematic diagram of coal-burning power plant's high slat-containing wastewater deep treatment system and method embodiment one of the present invention；
Fig. 2 is a kind of coal-burning power plant's high slat-containing wastewater deep treatment system and method rotary drum evaporator structural representation of the present invention
Figure；
Drawing reference numeral explanation:
Waste water tank 1, waste water box mixer 2, waste water pump 3, rotary drum evaporator 4,
Air-introduced machine 5, supporting element 41, oil filler point 42, power blade 43,
Inner cylinder 44, zirconia ball 45, shaft 46, waste water spray head 47.
Specific embodiment
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, Detailed description of the invention will be compareed below
A specific embodiment of the invention.It should be evident that drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing, and obtain other embodiments.To make simplified form, only schematically showing and phase of the present invention in each figure
The part of pass, they do not represent its practical structures as product.
Embodiment 1
As shown in Figure 1, this specific embodiment discloses a kind of coal-burning power plant's high slat-containing wastewater governing system more preferably
Embodiment, comprising:
Waste water tank 1, for storing high-salt wastewater；
Waste water pump 3 is connected to waste water tank 1, for the high-salt wastewater in transport wastewater case 1；
Air-introduced machine 5, for conveying hot fume；
Rotatable rotary drum evaporator 4, is connected to waste water pump 3, air-introduced machine 5 respectively, and high-salt wastewater is sent by waste water pump 3
In rotary drum evaporator 4 under rotary state, hot fume is sent into rotary drum evaporator 4 by air-introduced machine 5；High-salt wastewater is in hot fume
Under the action of, evaporation forms crystalline particle object；
Abrasive body is provided in rotary drum evaporator 4, the rotary drum evaporator 4 under rotary state drives abrasive body will crystallization
After grain object grinding, as hot fume is discharged outside rotary drum evaporator 4.
In the present embodiment, the hot fume that boiler generates is connected to 4 gas inlet of rotary drum evaporator by the conducting of air-introduced machine 5,
In rotary drum evaporator 4, brine waste is sprayed at abrasive body surface and increases surface area and come into full contact with and be evaporated with high-temperature flue gas,
Solid particulate matter is obtained, biggish particulate matter drives abrasive body to collide, is ground into fine particulate material by the rotation of roller,
Tiny particulate matter is captured as hot fume discharge rotary drum evaporator 4 carries out subsequent step by the deduster of rear end.
The system run all right, equipment volume is small, and occupied area is small, flexible arrangement, does not have to setting atomizer, pipeline will not
Blocking, system run all right, wherein rotary drum evaporator 4 and flue use flanged joint, maintenance convenience.Utilize boiler hot flue gas
Temperature evaporating waste water achievees the purpose that control useless and desulfurization wastewater zero-emission with waste water, and it is excellent to have that with low investment, operating cost is low etc.
Gesture.
Embodiment 2
It is controlled as shown in Fig. 2, this specific embodiment discloses a kind of coal-burning power plant's high slat-containing wastewater on the basis of embodiment 1
Reason system more preferably embodiment:
Rotary drum evaporator 4 includes outer cylinder:
Outer barrel is provided with rotatable inner cylinder 44, and the top and bottom of inner cylinder 44 are in Openworks shape, and high-salt wastewater passes through
Waste water pump 3 is sent into the inner cylinder 44 under rotary state；
Abrasive body is located in inner cylinder 44, and the diameter of abrasive body is greater than the aperture of the bottom opening of inner cylinder 44.
In the present embodiment, the top and bottom of inner cylinder 44 are arranged to Openworks shape, enable high-temperature flue gas in inner cylinder 44
It circulates, and sets smaller than the diameter of abrasive body for the aperture of 44 bottom of inner cylinder, can prevent abrasive body from being turned
It is fallen when dynamic, it is ensured that grind the stability of body running.
Embodiment 3
It is controlled as shown in Fig. 2, this specific embodiment discloses a kind of coal-burning power plant's high slat-containing wastewater on the basis of embodiment 1
Reason system more preferably embodiment:
Outer barrel is provided with power blade 43, and power blade 43 is connected to inner cylinder 44, power blade 43 by shaft 46
Under the flowing of hot fume, inner cylinder 44 is driven to rotate.
Two supporting elements 41 are fixed in outer cylinder, 41 cross-sectional area of supporting element is less than the internal cross-sectional area of outer cylinder, moves
Power blade 43, inner cylinder 44 are sequentially located between two supporting elements 41 along the flow direction of hot fume, and the end part of shaft 46
It does not stretch to and is rotationally connected with supporting element 41.
Specifically, the side wall of inner cylinder 44 is fixedly connected by fixedly connected part with power blade 43, guarantees the stabilization of structure.
In the present embodiment, rotary drum evaporator 4 is not necessarily to external drive, and inner cylinder 44 arranges power blade 43, will by air-introduced machine 5
While high-temperature flue gas is passed through in rotary drum evaporator 4, the rotation of wind energy propulsion power blade 43 is provided, so that rotary drum evaporator
4 being rotated by power blade 43 of inner cylinder 44 are a kind of modes from driving.
Embodiment 4
It is controlled as shown in Fig. 2, this specific embodiment discloses a kind of coal-burning power plant's high slat-containing wastewater on the basis of embodiment 1
Reason system more preferably embodiment:
Supporting element 41 is rodlike hollow structure, and the end of supporting element 41 is arranged in the side wall of outer cylinder, supporting element 41 and outer cylinder
Junction is equipped with oil filler point 42.
It is easy to lubricate to reach shaft 46 by adding oil filler point 42 outside rotary drum evaporator 4 in the technical program,
Improve the purpose in 46 service life of shaft.When oiling, oil liquid flows into supporting element 41 through oil filler point 42, plays lubrication to shaft 46 and makees
With frictional force when rotating shaft 46 reduces；The replacement of 46 oil liquid of shaft, is discharged the impurity in supporting element 41 with oil liquid,
It avoids the accumulation because of impurity from damaging shaft 46, extends the service life of shaft 46, to improve reliability, the safety of roller evaporation work
Property.
It is bar-like due to supporting element 41, high-temperature flue gas will not be influenced when circulating by its structure.
Embodiment 5
It is controlled as shown in Fig. 2, this specific embodiment discloses a kind of coal-burning power plant's high slat-containing wastewater on the basis of embodiment 1
Reason system more preferably embodiment:
The annular groove protruded into for waste water spray head 47 is offered on the roof that inner cylinder 44 leans on, waste water spray head 47 is fixed on outer cylinder
Above and by waste water delivery pipe it is connected to waste water pump 3；When inner cylinder 44 is rotated relative to outer cylinder, waste water spray head 47 is quiet relative to outer cylinder
It is only motionless.
In the present embodiment, by the way that waste water spray head 47 is extended into the annular groove pre-set, when rotary drum evaporator 4 rotates
When, waste water is sprayed at abrasive body surface by waste water spray head 47, by the rolling of abrasive body, after waste water obtains high specific surface area
It is come into full contact with hot fume, in this way the rotation of rotary drum evaporator 4, and then realizes " flash distillation " of waste water, do not have to setting atomization
Device, pipeline will not block, system run all right, while waste water pump 3 reduces 3 power of waste water pump without atomizing pressure is provided,
Energy consumption reduces.
Embodiment 6
It is controlled as shown in Fig. 2, this specific embodiment discloses a kind of coal-burning power plant's high slat-containing wastewater on the basis of embodiment 1
Reason system more preferably embodiment:
Rotary drum evaporator 4 is inclined type, and tilt angle with respect to the horizontal plane is 20 °~60 °.
In the present embodiment, rotary drum evaporator 4 is set as to be 20 °~60 ° of inclined type for tilt angle, abrasive body can be made
Surface area it is bigger, improve space utilization rate.
Preferably, inner cylinder 44 is rough surface；
And/or
Abrasive body is zirconia ball 45.
In the present embodiment, 4 inner cylinder 44 of rotary drum evaporator uses rough surface, and zirconia ball 45 can be promoted sufficiently to roll,
Improve the heat utilization efficiency of flue gas.Zirconia ball 45 is mainly used in the extra-fine grinding and dispersion of high viscosity, high rigidity material, and
It can achieve no pollution.Since 45 real density of zirconia ball is big, there is bigger grinding kinetic energy under equal motion speed, grind
It is 2~3 times higher than conventional ceramic microballon to grind efficiency, so more preferably effect can be obtained using zirconia ball 45.Due to zirconium
Ball ZrO2Content is high, have many advantages, such as high density, high tenacity, low abrasion, without broken ball, removing, abrasive material is dispersed to pollute small.Mill
Loss-rate conventional ceramic microballon is 4~10 times low.There are also stability is good, acid and alkali resistance burn into circularity is good, surface for zirconia ball 45
Smooth, pore-free has the characteristics that specular gloss, easy cleaning, use cost are low.
Embodiment 7
It is controlled as shown in Figure 1, this specific embodiment discloses a kind of coal-burning power plant's high slat-containing wastewater on the basis of embodiment 1
Reason system more preferably embodiment:
Waste water box mixer 2 is equipped in waste water tank 1, the water outlet of waste water pump 3 also passes through return of waste water pipe and is connected to waste water
Case 1.
In the present embodiment, waste water box mixer 2 is used to the waste water that stirring desulphurization system generates, the solid content in the waste water compared with
Height, can be evenly dispersed in the solution by the suspended matter in waste water by waste water box mixer 2, it is prevented to be deposited in 1 bottom of waste water tank
Portion enables 3 stable operation of waste water pump.
Waste water pump 3 is frequency conversion waste water pump 3, and waste water enters roller by the control of frequency conversion waste water pump 3 and steam before entering inner cylinder 44
The wastewater flow rate for sending out device 4, matches it with flue gas condition, by way of adding return of waste water pipe, using circulation, controls flow,
When flow is excessive, extra liquid can be flowed back to by return of waste water pipe in the waste water tank 1, will not be generated to whole machine
It influences, further improves safety, the reliability of equipment.
Embodiment 8
As shown in Figure 1, this specific embodiment discloses a kind of coal-burning power plant's high slat-containing wastewater administering method:
High-salt wastewater in waste water tank 11 is delivered to rotary drum evaporator 4 by waste water pump 3, passes through the waste water of rotary drum evaporator 4
Spray head 47 is sprayed at 45 surface of zirconia ball；
The hot fume generated in boiler is conducted to rotary drum evaporator 4 by air-introduced machine 5, makes to be sprayed at 45 surface of zirconia ball
Waste water come into full contact with and be evaporated with hot fume, crystalline particle object is discharged after the grinding of zirconia ball 45 with hot fume.
Specifically, flue gas velocity of liquid assets is 8~15m/s in rotary drum evaporator 4.
In the present embodiment, flow control can be guaranteed into hot fume and waste water connecing on zirconia ball 45 in 8~15m/s
Touching is abundant and is evaporated, during actual use, by the optimum flow rate, it is determined for the diameter of rotary drum evaporator 4,
Ensure that it can be rotated under optimum flow rate；
Wastewater flow rate and exhaust gas volumn are directly proportional, and exhaust gas volumn is mainly flowed through the speed of zirconia ball 45 by flue-gas temperature, flue gas
Degree influences, and the flow velocity of waste water can be adjusted according to the actual situation.
It should be noted that above-described embodiment can be freely combined as needed.The above is only of the invention preferred
Embodiment, it is noted that for those skilled in the art, in the premise for not departing from the principle of the invention
Under, several improvements and modifications can also be made, these modifications and embellishments should also be considered as the scope of protection of the present invention.
Claims (10)
1. a kind of coal-burning power plant's high slat-containing wastewater governing system characterized by comprising
Waste water tank, for storing high-salt wastewater；
Waste water pump is connected to the waste water tank, for conveying the high-salt wastewater in the waste water tank；
Air-introduced machine, for conveying hot fume；
Rotatable rotary drum evaporator is connected to the waste water pump, air-introduced machine respectively, and the high-salt wastewater passes through the waste water pump
It is sent into the rotary drum evaporator under rotary state, the hot fume is sent into the rotary drum evaporator by the air-introduced machine
It is interior；For the high-salt wastewater under the action of hot fume, evaporation forms crystalline particle object；
Abrasive body is provided in the rotary drum evaporator, the rotary drum evaporator under rotary state drives the abrasive body will
After the crystalline particle object grinding, as hot fume is discharged outside the rotary drum evaporator.
2. a kind of coal-burning power plant's high slat-containing wastewater deep treatment system according to claim 1, which is characterized in that the rolling
Cylinder evaporator includes outer cylinder:
The outer barrel is provided with rotatable inner cylinder, and the top and bottom of the inner cylinder are in Openworks shape, the high-salt wastewater
The inner cylinder under rotary state is pumped by the waste water；
The abrasive body is located in the inner cylinder, and the diameter of the abrasive body is greater than the aperture of the bottom opening of the inner cylinder.
3. a kind of coal-burning power plant's high slat-containing wastewater governing system according to claim 2, it is characterised in that:
The outer barrel is provided with power blade, and the power blade is connected to the inner cylinder, the power leaf by shaft
Piece drives the inner cylinder to rotate under the flowing of the hot fume.
4. a kind of coal-burning power plant's high slat-containing wastewater governing system according to claim 3, it is characterised in that:
Two supporting elements are fixed in the outer cylinder, the supporting element cross-sectional area is less than the internal cross section of the outer cylinder
Product, the power blade, inner cylinder are sequentially located between described two supporting elements along the flow direction of the hot fume, and described
The end of shaft is stretched to respectively and is rotationally connected with the supporting element.
5. a kind of coal-burning power plant's high slat-containing wastewater governing system according to claim 4, it is characterised in that:
The side wall of the inner cylinder is fixedly connected by fixedly connected part with the power blade；
The rotary drum evaporator is inclined type, and tilt angle with respect to the horizontal plane is 20 °~60 °.
6. a kind of coal-burning power plant's high slat-containing wastewater governing system according to claim 5, it is characterised in that:
The supporting element is rodlike hollow structure, and the end of the supporting element is arranged in the side wall of the outer cylinder, the supporting element
Oil filler point is equipped with the outer cylinder junction.
7. a kind of coal-burning power plant's high slat-containing wastewater governing system according to claim 6, it is characterised in that:
The annular groove protruded into for waste water spray head is offered on the roof that the inner cylinder leans on, the waste water spray head is fixed on described outer
It is connected on cylinder and by waste water delivery pipe with the waste water pump；When the inner cylinder is rotated relative to the outer cylinder, the waste water spray
Head is stationary relative to the outer cylinder.
8. a kind of coal-burning power plant's high slat-containing wastewater governing system according to claim 2, it is characterised in that:
The inner cylinder is rough surface；
And/or
The abrasive body is zirconia ball.
9. a kind of coal-burning power plant's high slat-containing wastewater governing system according to claim 1, it is characterised in that:
Be equipped with waste water box mixer in the waste water tank, the water outlet of the waste water pump also pass through return of waste water pipe be connected to it is described
Waste water tank.
10. a kind of coal-burning power plant's high slat-containing wastewater administering method, it is characterised in that:
High-salt wastewater in waste water tank is delivered to rotary drum evaporator by waste water pump, is sprayed by the waste water spray head of the rotary drum evaporator
It is sprinkled upon zirconia ball surface；
The hot fume generated in boiler is conducted to the rotary drum evaporator by air-introduced machine, makes to be sprayed at the zirconia ball surface
Waste water come into full contact with and be evaporated with hot fume, crystalline particle object is discharged after zirconia ball grinding with hot fume；
Flue gas velocity of liquid assets is 8~15m/s in the rotary drum evaporator.
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| CN112479286A (en) * | 2020-11-02 | 2021-03-12 | 中能极致(南京)科技有限公司 | Flue evaporator for desulfurization wastewater, evaporation system and flue evaporation process |
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