CN204074261U - Wet electrical dust precipitator, its water pond drainage - Google Patents
Wet electrical dust precipitator, its water pond drainage Download PDFInfo
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- CN204074261U CN204074261U CN201420550325.2U CN201420550325U CN204074261U CN 204074261 U CN204074261 U CN 204074261U CN 201420550325 U CN201420550325 U CN 201420550325U CN 204074261 U CN204074261 U CN 204074261U
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Abstract
The utility model wet electrical dust precipitator, its water pond drainage, each water pond of described water pond drainage is connected to the valve of blow-off pipe and control of sewage disposal pipe, it is characterized in that: also comprise the extension of each blow-off pipe of the outside being positioned at wet electrical dust precipitator tower body and total blow-off pipe, described total blow-off pipe distributes around the outside 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 enters in tower body through tower body outer wall and connects with the corresponding described blow-off pipe in tower body, described valve is positioned on described blow-off pipe extension separately.The outer blowdown of tower is carried out in the outside that dirt in described tower body is introduced directly into tower body by described drainage, its dirt eliminating function operationally also can be carried out, add blowdown number of times, the extension of anti-water-stop tray inner product ash results in blockage, and solves the problem causing equipment rebuilding because of water pond blocking.
Description
Technical field
The utility model belongs to industrial dedusting field, is specifically related to the wet electrical dust precipitator of the operating water pond drainage of a kind of wet electrical dust precipitator and this drainage of employing.
Background technology
Usually can produce various containing dust, flue dust, H in industrial processes
2the dusty gas of S etc., if be directly discharged in air, can cause very large harm to health and atmospheric environment.Various dedusting, especially electrostatic precipitator are widely used in the fields such as chemical industry, metallurgy, machinery, for all kinds of gas cleaning flow process containing dust, tar and impurity, make the gas discharged to environment meet environmental requirement.
Electric cleaner utilizes high-voltage electrostatic field, and the gas with dust is ionized, and then makes dust granules charged by collision, wherein the grit of bear electricity is deposited on positive plate, and the gas of purification is then discharged outside deduster.Wet electrical dust precipitator be generally be used in that impurity molecule amount is larger, ratio of viscosities more greatly, in not runny gas purification flow process, be in operation modes such as utilizing water spray, spraying and overflow, anode forms moisture film, the dust adhered at the electrode surface, impurity are washed away and walks through water-band.
Water pond is the critical component of wet electrical dust precipitator, and concrete structure is see shown in Fig. 1-Fig. 2, and Fig. 1 is a kind of stereogram of water pan structure of typical wet electrical dust precipitator, and Fig. 2 is the schematic diagram of the wet electrical dust precipitator of the water pond drainage of prior art.Water pond 1 is made up of water inlet 2, delivery port 3, tank 4, area of slack water 5, poling hole 6, cofferdam 7 and bend pipe 8, and wherein the poling hole 6 of water pond 1 is the installation site of anode tube 9.Described anode tube 9 and cathode line 15 (corona discharge electrode) form static electric field, and the anode mouth of pipe installs study of water film distribution ring 10, guarantee that moisture film is formed and along under tube wall steady flow.Continuously circulating water flows into tank 4 through water inlet pipe 14, water inlet 2, spraying is formed by delivery port 3, current arrive the surface of water pond 1, because there being the existence in cofferdam 6, therefore in water pond 1, form the area of slack water 5 be made up of the mild water surface that about 100mm is dark, water in described area of slack water 5 slowly flows into tube wall and forms uniform moisture film, takes away the dust absorbed.
In the prior art, the drainage of wet electrical dust precipitator is built-in, and concrete structure is see Fig. 2.Comprise blow-off pipe 11, valve 12 and hand hole 13.Need during blowdown to stop the operation of deduster, after turning on hand hole 13, hand puts in electric cleaner to be opened valve 12 water containing dirt in water pond 1 is discharged.Because blowdown operation cannot carry out when equipment runs, need until equipment exit overhaul after just can.Now equipment has run 2 ~ 3 years, water pond especially in tank dust stratification serious, dust removing effects is not good, and blowdown is incomplete.And Yin Tanei narrow space can not be constructed, blow-off pipe, valve cannot be changed, and normally simply clear up water pond and just again come into operation.Affect service life of equipment and production, increase cost of equipment maintenance.
Utility model content
Based on problems of the prior art, the utility model provides the water pond drainage in a kind of wet electrical dust precipitator and adopts the wet electrical dust precipitator of this drainage, in time, effectively can remove water pond dirt, avoid water pond to block, extend electric cleaner service life.
Technology contents of the present utility model:
A kind of water pond drainage of wet electrical dust precipitator, each water pond is connected to the valve of blow-off pipe and control of sewage disposal pipe, also comprise the extension of each blow-off pipe of the outside being positioned at wet electrical dust precipitator tower body and total blow-off pipe, described total blow-off pipe distributes around the outside 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 enters in tower body through tower body outer wall and connects with the corresponding described blow-off pipe in tower body, and described valve is positioned on described blow-off pipe extension separately.
Described total blow-off pipe is connected with sewage recovery place.
The material of the extension of described total blow-off pipe and blow-off pipe is seamless steel.
The diameter of described total blow-off pipe is 125mm, and the diameter of the extension of described blow-off pipe is 40mm.
The diameter of described total blow-off pipe is 125mm, and the diameter of the extension of described blow-off pipe is 40mm.
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 positioned at the lower end of tower body lateral wall.
A kind of water pond blowdown of wet electrical dust precipitator, adopt the arbitrary described water pond drainage of claim 1-8, open the valve being positioned at described tower body outside, cut off the high-tension electricity of described wet electrical dust precipitator simultaneously, heighten the water velocity increase entered in water pond and rush grey effect, carry out the outer blowdown of tower; At the end of blowdown, close described valve, start high-tension electricity, described in recovering, enter the water velocity in water pond simultaneously.
A kind of wet electrical dust precipitator, adopts the water pond drainage described in claim.
Technique effect of the present utility model:
The water pond drainage of a kind of wet electrical dust precipitator of the present utility model comprises the blow-off pipe of the inside of the tower body being positioned at described wet electrical dust precipitator, and is positioned at the extension of the blow-off pipe outside described tower body, valve and total blow-off pipe.Described total blow-off pipe distributes around the outside of described wet electrical dust precipitator tower body, and be connected with the water pond of described blow-off pipe with described tower body inside by the extension of described blow-off pipe, described valve is positioned on the extension of described blow-off pipe.The outer blowdown of tower is carried out in the outside that dirt in described tower body is introduced directly into tower body by described drainage, its dirt eliminating function operationally also can be carried out, add blowdown number of times, the extension of anti-water-stop tray inner product ash results in blockage, and solves the problem causing equipment rebuilding because of water pond blocking.
First water pond blowdown of the present utility model can to close electric field, and be heightened and enter water velocity in water pond to increase the water yield entered by cutoff high electricity, then opens described valve and carries out tower blowdown outward.Effluent stream in described like this water pond, through described blow-off pipe and extension thereof, finally converges in total blow-off pipe and is directly discharged to sewage recovery place.Rinse with the power-off of wet electrical dust precipitator during blowdown and combine, rushing grey effect by increasing water yield raising, guaranteeing normal operation and the efficiency of dust collection of electric cleaner.
Accompanying drawing explanation
Fig. 1 is the stereogram 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 drainage of the present utility model;
Fig. 4 is the side schematic view of the wet electrical dust precipitator of Fig. 3.
Reference numeral:
1-water pond; 2-water inlet; 3-delivery port; 4-tank; 5-area of slack water; 6-poling hole; 7-cofferdam; 8-bend pipe; 9-anode tube; 10-study of water film distribution ring; 11-blow-off pipe; 12-valve; 13-hand hole; 14-water inlet pipe; 15-cathode line; The extension of 16-blow-off pipe; The total blow-off pipe of 17-; 12 '-valve.
Detailed description of the invention
For ease of understanding, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Embodiment 1
Fig. 3 is the wet electrical dust precipitator schematic diagram of drainage of the present utility model, and Fig. 4 is the side schematic view of the wet electrical dust precipitator of Fig. 3.As shown in Figure 3-4, drainage of the present utility model comprises blow-off pipe 11, the extension 16 of blow-off pipe and valve 12 ' and total blow-off pipe 17, described total blow-off pipe 17 distributes around the outside of described wet electrical dust precipitator tower body, is connected with the water pond 1 of described blow-off pipe 11 with described tower body inside by the extension 16 of described blow-off pipe; One end of the extension 16 of described each blow-off pipe is communicated to described total blow-off pipe 17, and the other end enters described blow-off pipe 11 corresponding with in tower body in tower body through tower body outer wall and connects, and described valve 12 ' is positioned on the extension 16 of described each blow-off pipe.Total blow-off pipe 17 is positioned at the lower end of tower body lateral wall.Dirt in described water pond 1 is introduced directly into the total blow-off pipe 17 being positioned at tower body outside and carries out the outer blowdown of tower by described drainage, its dirt eliminating function operationally also can be carried out, add blowdown number of times, the extension of anti-water-stop tray inner product ash results in blockage, and solves the problem causing equipment rebuilding because of water pond blocking.
The running of wet electrical dust precipitator and drainage thereof:
Gas (coal gas) containing dust granules enters in wet electrical dust precipitator, enter by being connected to the high-voltage electrostatic field formed between the cathode line 15 (corona discharge electrode) of high-voltage DC power supply and the anode tube 9 of ground connection, make grit lotus with negative electricity and be deposited on anode tube wall, and the gas be purified is discharged wet electrical dust precipitator from top.On the other hand, recirculated water flows in described wet electrical dust precipitator from water inlet pipe 14, water inlet 2 through water pond 1 flows in tank 4, uniform moisture film is formed at anode tube wall, dust ionization gathered under described moisture film steady flow, impurity wash away and walk through water-band, and the described water with impurity imports sewage recovery place.
After wet electrical dust precipitator runs a period of time, water pond can accumulate dust, needs regularly (1 time/week) to carry out blowdown.First close high-tension electricity, cut off the electrostatic field 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 each valve 12 ' be positioned at outside described wet electrical dust precipitator tower body is opened respectively, the dust be accumulated in tank 4 is washed and flows into blow-off pipe 11 and extension 16 thereof, and converge to total blowdown 17 finally inflow sewage recovery place.At the end for the treatment of blowdown, valve-off 12 ', recover the water intake velocity of water inlet pipe 14 while starting high-tension electricity, wet electrical dust precipitator enters normal dust removal state.
The drainage of the present embodiment can reach the object increasing blowdown number of times, and anti-water-stop tray inner product ash expands and forms blocking.Rinse with the power-off of electric cleaner during blowdown and combine, rushing grey effect by increasing inflow raising, guaranteeing normal operation and the efficiency of dust collection of electric cleaner.
Embodiment 2
Drainage in embodiment 1 needs to carry out following improvement and realizes;
Original for wet electrical dust precipitator water pond blowdown hand hole 13 is cut off, and expands convenient construction and installation.Water pond blow-off pipe 11 and valve 12 are drawn extension 16 and valve 12 ' that tower forms blow-off pipe outward, increase a total blow-off pipe 17 be connected respectively around tower body and with the extension 16 of blow-off pipe simultaneously.Finally hand-hole opening part is sealed, thus the tower realizing water pond blowdown controls outward.
The material needed: 20 meters, Φ 125mm seamless steel pipe, Φ 40mm seamless steel pipe overall length 15 meters, 24 altogether, therefore every long 0.625m of root.
The duration of transformation: extension 16 and the 1 total blow-off pipe 17 of Φ 125mm of transforming 24 Φ 40mm blow-off pipes, need can complete for about 3 days.
Had the following advantages by the drainage transforming realization above:
1) operational efficiency of wet electrical dust precipitator is improved:
When electric cleaner occurs that water pond blocks, usual running time has reached 2 years, now must guarantee that its working voltage, electric current are normal by adjustment power delivery voltage and the water yield, usual electric current reduction causes 35KV and 150mA, power is 5250 watts, and normal operating current, voltage are 45KV and 260mA, power is 11700 watts.
5250÷11700＝44.87％
Therefore, the electric current caused after water pond dust stratification, voltage reduce and discharge reduction can make the operational efficiency of electric cleaner be reduced to 44.87%.And transformed by the external of blow-off pipe, avoid the appearance of water pond clogging, electric cleaner operational efficiency reaches more than 95% all the time.
2) service life of electric cleaner is extended:
When electric cleaner uses built-in water pond blow-off pipe, the cycle of operation of electric cleaner is generally 3 years, now will carry out large repairs, and changes water pond.And after using external blow-off pipe, solve water pond blocking and cause the problem of overhaul, make its cycle of operation reach 5 years.
3) maintenance cost is reduced:
During electric cleaner use external water pond blowdown, can reduce the number of times carrying out clearing up, overhaul out of service in a large number, reduce recondition expense, personnel are physically and mentally healthy in protection cleaning.
4) the carrying out of subsequent handling is effectively improved:
The operational efficiency of electric cleaner and the raising of the cycle of operation, effectively can remove the dust in gas and impurity, ensure that operational efficiency and the cycle of its follow-up blower fan.
5) pollution to air is reduced:
Usually containing H in the coal gas of electric cleaner process, flue gas
2s, the operational efficiency of electric cleaner improves, and also more effectively removes the H in gas
2s, decreases the SO in flue gas
2discharge capacity, decreases gaseous contamination.
Claims (9)
1. the water pond drainage of a wet electrical dust precipitator, each water pond is connected to the valve of blow-off pipe and control of sewage disposal pipe, it is characterized in that: also comprise the extension of each blow-off pipe of the outside being positioned at wet electrical dust precipitator tower body and total blow-off pipe, described total blow-off pipe distributes around the outside 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 enters in tower body through tower body outer wall and connects with the corresponding described blow-off pipe in tower body, and described valve is positioned on described blow-off pipe extension separately.
2. water pond drainage according to claim 1, is characterized in that: described total blow-off pipe is connected with sewage recovery place.
3. water pond drainage according to claim 1 and 2, is characterized in that: the material of the extension of described total blow-off pipe and blow-off pipe is seamless steel.
4. water pond drainage according to claim 1 and 2, is characterized in that: the diameter of described total blow-off pipe is 125mm, and the diameter of the extension of described blow-off pipe is 40mm.
5. water pond drainage according to claim 3, is characterized in that: the diameter of described total blow-off pipe is 125mm, and the diameter of the extension of described blow-off pipe is 40mm.
6. water pond drainage according to claim 1 and 2, is characterized in that: the length of described total blow-off pipe is 20m, and the length of the extension of described blow-off pipe is 0.625m.
7. water pond drainage according to claim 3, is characterized in that: the length of described total blow-off pipe is 20m, and the length of the extension of described blow-off pipe is 0.625m.
8. water pond drainage according to claim 1 and 2, is characterized in that: described total blow-off pipe is positioned at the lower end of tower body lateral wall.
9. a wet electrical dust precipitator, is characterized in that adopting the arbitrary described water pond drainage of claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420550325.2U CN204074261U (en) | 2014-09-23 | 2014-09-23 | Wet electrical dust precipitator, its water pond drainage |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420550325.2U CN204074261U (en) | 2014-09-23 | 2014-09-23 | Wet electrical dust precipitator, its water pond drainage |
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| CN204074261U true CN204074261U (en) | 2015-01-07 |
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| CN201420550325.2U Active CN204074261U (en) | 2014-09-23 | 2014-09-23 | Wet electrical dust precipitator, its water pond drainage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104226480A (en) * | 2014-09-23 | 2014-12-24 | 广西华银铝业有限公司 | Wet type dust remover and water pond sewage discharging system and sewage discharging method thereof |
-
2014
- 2014-09-23 CN CN201420550325.2U patent/CN204074261U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104226480A (en) * | 2014-09-23 | 2014-12-24 | 广西华银铝业有限公司 | Wet type dust remover and water pond sewage discharging system and sewage discharging method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |