CN104226480B - Wet type dust remover and water pond sewage discharging system and sewage discharging method thereof - Google Patents
Wet type dust remover and water pond sewage discharging system and sewage discharging method thereof Download PDFInfo
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- CN104226480B CN104226480B CN201410489942.0A CN201410489942A CN104226480B CN 104226480 B CN104226480 B CN 104226480B CN 201410489942 A CN201410489942 A CN 201410489942A CN 104226480 B CN104226480 B CN 104226480B
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Abstract
The invention discloses a wet type dust remover and a water pond sewage discharging system and a sewage discharging method thereof. Each water pond of the water pond sewage discharging system is connected with a sewage discharging pipe and a valve for controlling the sewage discharging pipe respectively; the water pond sewage discharging system is characterized by further comprising extending sections of all sewage discharging pipes outside a tower body of the wet type dust remover and a main sewage discharging pipe; the main sewage discharging pipe encircles the exterior of the tower body; one end of the extending section of each sewage discharging pipe is communicated to the main sewage discharging pipe, and the other end of the extending section of each sewage discharging pipe penetrates through the outer wall of the tower body to enter the tower body and is connected with the corresponding sewage discharging pipe; the valves are positioned on the own extending sections of the sewage discharging pipes; the sewage discharging system directly introduces sewage in the tower body out of the tower body for performing sewage discharging outside the tower, and the sewage discharging function can be also realized during running; the sewage discharging frequency is increased, blockage caused by dust accumulation expansion in each water pond is prevented, and the problem of equipment overhaul caused by the blocking of each water pond is solved.
Description
Technical field
The invention belongs to industrial dedusting field and in particular to a kind of wet electrical dust precipitator operating water pond drainage and
Its method for discharging pollution and the wet electrical dust precipitator using this drainage.
Background technology
Would generally produce in industrial processes various containing dust, flue dust, H2The dusty gass of S etc., if directly arranged
It is put in air, health and atmospheric environment can be caused with very big harm.Various dust collection methods, especially electrostatic precipitator quilt
It is widely used in the fields such as chemical industry, metallurgy, machinery, for the purification process of all kinds of gases containing dust, tar and impurity, make
Arrange and meet environmental requirement to the gas of environment.
Electric cleaner utilizes high-voltage electrostatic field, so that the gas with dust is ionized, and then makes dust granules by collision
Charged, the grit of wherein bear electricity is deposited on positive plate, and the gas of purification is then discharged outside cleaner unit.Wet electrical dust precipitator is general
Be used in impurity molecule amount than larger, ratio of viscosities is larger, in not runny gas purification flow process, be in operation using water spray,
Spraying and the mode such as overflow, form moisture film on anode, and adhesion dust at the electrode surface, impurity are washed away and through water
Take away.
Water pond is the critical component of wet electrical dust precipitator, and referring to shown in Fig. 1-Fig. 2, Fig. 1 is a kind of typical to concrete structure
The axonometric chart of the water pan structure of wet electrical dust precipitator, Fig. 2 is showing of the wet electrical dust precipitator of water pond drainage of prior art
It is intended to.Water pond 1 is made up of water inlet 2, outlet 3, tank 4, area of slack water 5, poling hole 6, cofferdam 7 and bend pipe 8, wherein water pond 1
Poling hole 6 be anode tube 9 installation site.Described anode tube 9 and cathode line 15 (corona discharge electrode) constitute static electric field, anode tube
Mouth installs study of water film distribution ring 10 it is ensured that moisture film is formed and along under tube wall steady flow.Continuously circulating water is through water inlet pipe 14, water inlet 2
Flow into tank 4, spraying is formed by outlet 3, current reach the surface of water pond 1, because there being the presence in cofferdam 6, therefore formed in water pond 1
The area of slack water 5 being made up of the deep gentle water surface of about 100mm, the water in described area of slack water 5 flows slowly into tube wall and forms uniform water
Film, takes away the dust absorbing.
In the prior art, the drainage of wet electrical dust precipitator is built-in, and concrete structure is referring to Fig. 2.Including blowdown
Pipe 11, valve 12 and hand hole 13.Need during blowdown to stop the operation of cleaner unit, after turning on hand hole 13, handss put in electric cleaner
Opening valve 12 makes the water that water pond 1 is contained within dirt discharge.Because blowdown operation cannot be carried out when equipment runs, equipment need to be treated
Exit and just may be used after being overhauled.Now equipment has run 2～3 years, and in water pond especially tank, dust stratification is serious, and dust removing effects are not
Good, blowdown is incomplete.And Yin Tanei narrow space can not construct, blow-off pipe, valve cannot be changed, and typically simply clear up water pond
Just again come into operation.Impact service life of equipment and production, increase cost of equipment maintenance.
Content of the invention
Based on problems of the prior art, the invention provides the water pond drainage in a kind of wet electrical dust precipitator
And its method for discharging pollution and the wet electrical dust precipitator using this drainage, can in time, effectively remove water pond dirt, it is to avoid water
Disk blocks, and extends electric cleaner service life.
The technology contents of the present invention：
A kind of water pond drainage of wet electrical dust precipitator, each water pond is connected to blow-off pipe and control of sewage disposal pipe
Valve, also includes the extension of each blow-off pipe and the total blow-off pipe positioned at the outside of wet electrical dust precipitator tower body, described total blowdown
Around the outside distribution of described tower body, one end of the extension of described each blow-off pipe is communicated to described total blow-off pipe, the other end to pipe ring
Enter in tower body through tower body outer wall and connect with the corresponding described blow-off pipe in tower body, it is each that described valve is located at described blow-off pipe
From extension on.
Described total blow-off pipe is connected with sewage recovery.
The material of the extension of described total blow-off pipe and blow-off pipe is seamless steel.
A diameter of 125mm of described total blow-off pipe, a diameter of 40mm of the extension of described blow-off pipe.
A diameter of 125mm of described total blow-off pipe, a diameter of 40mm of the extension of described blow-off pipe.
The length of described total blow-off pipe is 20m, and the length of the extension of described blow-off pipe is 0.625m.
The length of described total blow-off pipe is 20m, and the length of the extension of described blow-off pipe is 0.625m.
Described total blow-off pipe is located at the lower end of tower body lateral wall.
A kind of water pond method for discharging pollution of wet electrical dust precipitator, using the arbitrary described water pond drainage of claim 1-8,
Open the valve outside positioned at described tower body, cut off the high-tension electricity of described wet electrical dust precipitator simultaneously, heighten in entrance water pond
Water velocity increases the grey effect of punching, carries out the outer blowdown of tower；Close described valve at the end of blowdown, start high-tension electricity, simultaneously extensive
The multiple described water velocity entering in water pond.
A kind of wet electrical dust precipitator, using the water pond drainage described in claim.
The technique effect of the present invention：
A kind of water pond drainage of wet electrical dust precipitator of the present invention includes the tower body positioned at described wet electrical dust precipitator
Inside blow-off pipe, and be located at the extension of blow-off pipe outside described tower body, valve and total blow-off pipe.Described total blow-off pipe
Around the outside distribution of described wet electrical dust precipitator tower body, by extension and described blow-off pipe and the described tower of described blow-off pipe
The water pond in internal portion connects, and described valve is located on the extension of described blow-off pipe.Described drainage is by described tower body
The outside that dirt is introduced directly into tower body carries out the outer blowdown of tower so that its dirt eliminating function operationally also can be carried out, the row of increased
Dirty number of times, anti-water-stop tray inner product ash extension results in blockage, and solves the problems, such as to lead to equipment rebuilding because of water pond blocking.
The water pond method for discharging pollution of the present invention can be first turned off high-tension electricity closing electric field, and heightens in entrance water pond
Water velocity, to increase the water yield of entrance, is then opened described valve and is carried out the outer blowdown of tower.Sewage stream in so described water pond
Through described blow-off pipe and its extension, finally converge in total blow-off pipe and be exhausted directly at sewage recovery.With wet type electricity during blowdown
The power-off of cleaner unit is rinsed and is combined, by increasing the water yield and improving the grey effect of punching it is ensured that the normal operation of electric cleaner and dedusting
Efficiency.
Brief description
Fig. 1 is the axonometric chart of the water pan structure of typical wet electrical dust precipitator；
Fig. 2 is the wet electrical dust precipitator schematic diagram of the drainage of prior art；
Fig. 3 is the wet electrical dust precipitator schematic diagram of the drainage of the present invention；
Fig. 4 is the side schematic view of the wet electrical dust precipitator of Fig. 3.
Reference：
1- water pond；2- water inlet；3- outlet；4- tank；5- area of slack water；6- poling hole；7- cofferdam；8- bend pipe；9- sun
Pole pipe；10- study of water film distribution ring；11- blow-off pipe；12- valve；13- hand hole；14- water inlet pipe；15- cathode line；16- blow-off pipe
Extension；The total blow-off pipe of 17-；12 '-valve.
Specific embodiment
For ease of understanding, the invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1
Fig. 3 is the wet electrical dust precipitator schematic diagram of the drainage of the present invention, and Fig. 4 is the side of the wet electrical dust precipitator of Fig. 3
Face schematic diagram.As shown in Figure 3-4, the drainage of the present invention include blow-off pipe 11, the extension 16 of blow-off pipe and valve 12 ' with
And total blow-off pipe 17, described total blow-off pipe 17 around the outside distribution of described wet electrical dust precipitator tower body, by described blow-off pipe
Extension 16 and described blow-off pipe 11 be connected with the water pond 1 within described tower body；The one of the extension 16 of described each blow-off pipe
End is communicated to described total blow-off pipe 17, and the other end passes through tower body outer wall to enter described blow-off pipe 11 corresponding with tower body in tower body
Connect, described valve 12 ' is located on the extension 16 of described each blow-off pipe.Total blow-off pipe 17 is located at the lower end of tower body lateral wall.
Described drainage by the dirt in described water pond 1 be introduced directly into positioned at tower body outside total blow-off pipe 17 carry out row outside tower
Dirt, so that its dirt eliminating function operationally also can be carried out, increased blowdown number of times, and anti-water-stop tray inner product ash extension causes to block up
Plug, solves the problems, such as to lead to equipment rebuilding because of water pond blocking.
Wet electrical dust precipitator and its running of drainage：
Gas containing dust granules (coal gas) enters in wet electrical dust precipitator, enters by the moon being connected to high-voltage DC power supply
The high-voltage electrostatic field being formed between the anode tube 9 of polar curve 15 (corona discharge electrode) and ground connection, makes grit lotus with negative electricity and be deposited on
On anode tube wall, and the gas being purified is from wet electrical dust precipitator is discharged on top.On the other hand, recirculated water is from water inlet pipe 14
Flow in described wet electrical dust precipitator, the water inlet 2 through water pond 1 flows in tank 4, forms uniform moisture film in anode tube wall,
Under described moisture film steady flow, the dust of ionization accumulation, impurity are washed away and takes away through water, the described water with impurity imports
At sewage recovery.
After wet electrical dust precipitator runs a period of time, water pond can accumulate dust, needs periodically (1 times/week) to carry out blowdown.First
First close high-tension electricity, cut off the electrostatic field being formed by cathode line 15 and anode tube 9, heighten the water intake velocity of water inlet pipe 14 simultaneously,
To guarantee normal operation and the efficiency of dust collection of wet electrical dust precipitator, then open respectively outside described wet electrical dust precipitator tower body
Each valve 12 ', make the dust being accumulated in tank 4 be washed inflow blow-off pipe 11 and its extension 16, and converge to total row
Dirty 17 finally flow at sewage recovery.At the end for the treatment of blowdown, close valve 12 ', start and while high-tension electricity, recover water inlet pipe 14
Water intake velocity, wet electrical dust precipitator enter normal dust removal state.
The drainage of the present embodiment can reach the purpose increasing blowdown number of times, and it is stifled that anti-water-stop tray inner product ash expands formation
Plug.Rinse with the power-off of electric cleaner during blowdown and combine, by increasing inflow and improving the grey effect of punching it is ensured that electric cleaner
Normal operation and efficiency of dust collection.
Embodiment 2
Drainage in embodiment 1 needs to carry out following improvement realization；
Original for wet electrical dust precipitator water pond blowdown hand hole 13 is cut off, and expands convenient construction and installation.By water pond blowdown
Pipe 11 and valve 12 draw extension 16 and the valve 12 ' forming blow-off pipe outside tower, increase simultaneously one around tower body and with row
Total blow-off pipe 17 that the extension 16 of dirty pipe connects respectively.Sealing at the opening of hole finally will be entered, thus realizing the tower of water pond blowdown
Outer control.
The material needing：20 meters of Φ 125mm seamless steel pipe, 15 meters of Φ 40mm seamless steel pipe overall length, 24 altogether, therefore often
The long 0.625m of root.
The duration of transformation：The extension 16 of 24 Φ 40mm blow-off pipes of transformation and the total blow-off pipe 17 of 1 Φ 125mm, need 3
Can complete about it.
Advantages below is had by the drainage that above transformation is realized：
1) improve the operational efficiency of wet electrical dust precipitator：
When water pond blocking in electric cleaner, usual run time has reached 2 years, now must be by adjusting power delivery voltage and water
Amount is normal to guarantee its working voltage, electric current, and usual current reduction causes 35KV and 150mA, and power is 5250 watts, and normally runs
Electric current, voltage are 45KV and 260mA, and power is 11700 watts.
5250 ÷ 11700=44.87%
Therefore, the electric current, voltage reduction and the discharge reduction that lead to after water pond dust stratification can make the operational efficiency of electric cleaner drop
Low to 44.87%.And pass through the external transformation of blow-off pipe, it is to avoid the appearance of water pond clogging, electric cleaner runs effect
Rate consistently achieves more than 95%.
2) extend the service life of electric cleaner：
When electric cleaner uses built-in water pond blow-off pipe, the cycle of operation of electric cleaner is usually 3 years, now will carry out
Overhaul, changes water pond.And after using external blow-off pipe, solve the problems, such as that water pond blocking leads to overhaul so as to run week
Phase reaches 5 years.
3) reduce maintenance cost：
When electric cleaner uses external water pond blowdown, the number of times carrying out and clearing up, overhaul out of service can be reduced in a large number, fall
Low maintenance cost is used, and protection cleaning personnel are physically and mentally healthy.
4) it is effectively improved the carrying out of subsequent handling：
The operational efficiency of electric cleaner and the raising of cycle of operation, can effectively remove dust in gas and impurity it is ensured that
The operational efficiency of its follow-up blower fan and cycle.
5) reduce the pollution to air：
H is usually contained in the coal gas of electric cleaner process, flue gas2S, the operational efficiency of electric cleaner improves, also more effectively
H in removing gas2S, decreases the SO in flue gas2Discharge capacity, decreases gaseous contamination.
Claims (10)
1. the water pond drainage of a kind of wet electrical dust precipitator, each water pond is connected to blow-off pipe and the valve of control of sewage disposal pipe
Door it is characterised in that：Also include the extension of each blow-off pipe and the total blow-off pipe positioned at the outside of wet electrical dust precipitator tower body, institute
State the outside distribution around described tower body for total blow-off pipe, one end of the extension of described each blow-off pipe is communicated to described total blowdown
Pipe, the other end is passed through in tower body outer wall entrance tower body and is connected with the corresponding described blow-off pipe in tower body, and described valve is located at institute
State on the respective extension of blow-off pipe, when carrying out blowdown, open the valve of the blow-off pipe needing blowdown respectively, and heighten in water pond
Water velocity.
2. water pond drainage according to claim 1 it is characterised in that：Phase at described total blow-off pipe and sewage recovery
Even.
3. water pond drainage according to claim 1 and 2 it is characterised in that：The prolonging of described total blow-off pipe and blow-off pipe
The material of long section is seamless steel.
4. water pond drainage according to claim 1 and 2 it is characterised in that：Described total blow-off pipe a diameter of
125mm, a diameter of 40mm of the extension of described blow-off pipe.
5. water pond drainage according to claim 3 it is characterised in that：A diameter of 125mm of described total blow-off pipe, institute
State a diameter of 40mm of the extension of blow-off pipe.
6. water pond drainage according to claim 1 and 2 it is characterised in that：The length of described total blow-off pipe is 20m,
The length of the extension of described blow-off pipe is 0.625m.
7. water pond drainage according to claim 3 it is characterised in that：The length of described total blow-off pipe is 20m, described
The length of the extension of blow-off pipe is 0.625m.
8. water pond drainage according to claim 1 and 2 it is characterised in that：Described total blow-off pipe is located at outside tower body
The lower end of wall.
9. a kind of wet electrical dust precipitator water pond method for discharging pollution it is characterised in that：Using the arbitrary described water pond of claim 1-8
Drainage, opens the valve outside positioned at described tower body, cuts off the high-tension electricity of described wet electrical dust precipitator simultaneously, heightens entrance
Water velocity in water pond increases the grey effect of punching, carries out the outer blowdown of tower；Close described valve at the end of blowdown, start high pressure
Electricity, recovers the described water velocity entering in water pond simultaneously.
10. a kind of wet electrical dust precipitator is it is characterised in that adopt the arbitrary described water pond drainage of claim 1-8.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410489942.0A CN104226480B (en) | 2014-09-23 | 2014-09-23 | Wet type dust remover and water pond sewage discharging system and sewage discharging method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410489942.0A CN104226480B (en) | 2014-09-23 | 2014-09-23 | Wet type dust remover and water pond sewage discharging system and sewage discharging method thereof |
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| CN104226480B true CN104226480B (en) | 2017-02-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104888964A (en) * | 2015-06-24 | 2015-09-09 | 河北安维环境工程有限公司 | Wet-type high-pressure water-film electrostatic precipitator |
| CN104991146A (en) * | 2015-07-20 | 2015-10-21 | 国电环境保护研究院 | Wet-type electrostatic dust collector electrode assembly volt-ampere characteristic experiment table |
| CN105797866A (en) * | 2016-05-18 | 2016-07-27 | 佛山市南海区保蓝机械科技有限公司 | No-clean wet electrostatic purifying device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2279214Y (en) * | 1996-12-18 | 1998-04-22 | 宋建新 | Machine shaft kiln wetting method electrostatic precipitator |
| JP3640285B2 (en) * | 1997-12-26 | 2005-04-20 | オルガノ株式会社 | Coagulation sedimentation equipment |
| CN201643943U (en) * | 2010-04-08 | 2010-11-24 | 北京至清时光环保工程技术有限公司 | Novel turbulent ball tower for desulfurization industry |
| CN102974462A (en) * | 2012-11-13 | 2013-03-20 | 青岛通力机械制造有限公司 | Corrosion-resisting high-efficiency electro-filtration acid mist removing device |
| CN203183911U (en) * | 2013-04-17 | 2013-09-11 | 湖北中油优艺环保科技有限公司 | Spray washing tower |
| CN204074261U (en) * | 2014-09-23 | 2015-01-07 | 广西华银铝业有限公司 | Wet electrical dust precipitator, its water pond drainage |
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