CN203448181U - Combined type electric demister - Google Patents
Combined type electric demister Download PDFInfo
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- CN203448181U CN203448181U CN201320532074.0U CN201320532074U CN203448181U CN 203448181 U CN203448181 U CN 203448181U CN 201320532074 U CN201320532074 U CN 201320532074U CN 203448181 U CN203448181 U CN 203448181U
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- combined type
- demister
- flue gas
- dust collector
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Abstract
The utility model belongs to the field of flue gas desulfuration and provides a combined type demister for a WFGD (wet flue gas desulfurization) technology. The combined type demister comprises a shell, wherein a flue gas inlet and a flue gas outlet are formed in two sides of the shell. The combined type electric demister is characterized in that a plurality of parallel dust collection poles are arranged in the shell and partition a flue into a plurality of small flues; guide plates are arranged on the front parts of the dust collection poles; discharge electrodes are arranged in the small flues; the tops of the dust collection poles are connected with washing water devices; the dust collection poles consist of baffle plates; and hook slots are formed in the dust collection poles. A machinery and electric field combination demisting mode is adopted. The combined type electric demister disclosed by the utility model is mainly used in WFGD, can simultaneously implement demisting and remove pollutants such as dust, PM10, PM2.5, toxic heavy metals and sulfur trioxide from flue gas and has the characteristics of high demisting efficiency, small occupied space and low manufacturing cost.
Description
Technical field
The utility model belongs to filed of flue gas purification, a kind of demister for wet process of FGD (WFGD) technology specifically, be Combined type electric demister, be mainly used in solving the too much problem of the gypsum rain of limestone-gypsum method WFGD unit and ammonia process WFGD unit aerosol dust.
Background technology
Power station wet desulphurization (WFGD) unit of China approximately 70% does not configure smoke re-heater (GGH).At present, there is gypsum rain phenomenon in many limestone-gypsum method WFGD units that do not configure GGH; Dust exceeding phenomenon has appearred that in flue gas, aerosol is too much, in many ammonia process WFGD units that do not configure GGH.
Cause gypsum rain and the ammonia process WFGD unit aerosol dust of limestone-gypsum method WFGD unit too much mainly to come from flue gas carrying secretly in a large number slurries in desulfurizing tower.Remove slurries drop in flue gas and mainly contain two schemes, in desulfurizing tower outlet, set up mechanical demister or wet electrical dust precipitator.But this two schemes all has problems in actual applications.
Machinery demister utilizes inertia force that drop in flue gas is removed.But the demist efficiency of mechanical demister is lower, China WFGD unit has substantially all been installed mechanical demister at present, but still the phenomenon that old many units exist gypsum rain and aerosol dust to exceed standard.
Wet electrical dust precipitator utilizes electrostatic force that drop in flue gas is removed.Although wet electrical dust precipitator demist efficiency can reach more than 90%.But flue gas flow rate is lower in wet-esp, is about 2m/s, low flow velocity cause wet electrical dust precipitator to take a large amount of spaces and cost high.
The utility model Combined type electric demister gets up mechanical demister and wet electrical dust precipitator organic assembling, adopts machinery and two kinds of common demists of method of electric field.Combined type electric demister has absorbed the advantage of mechanical demister and wet electrical dust precipitator, has abandoned the inferior position of mechanical demister and wet electrical dust precipitator; It is high that it has demist efficiency, take up room less, and the feature that cost is low.
Summary of the invention
The purpose of this utility model is to provide a kind of demister for stove WFGD system.This device adopts machinery and two kinds of common demists of Combination of Methods of electric field.This device especially has good specific aim to power station WFGD.Device has following two features:
1. demist efficiency is high, takes up room less, and cost is low.
2. not only can demist, but also can remove dust in flue gas, PM
10, PM
2.5, the multiple pollutant such as toxic heavy metal and sulfur trioxide.
A kind of Combined type electric demister of the utility model, comprises housing, and housing both sides are provided with smoke entrance, it is characterized in that being provided with some parallel dust collector poles in housing, and dust collector pole is divided into some bottom flues by flue; Dust collector pole front portion arranges deflector, is provided with discharge electrode in bottom flue, and dust collector pole top connects rinse water arrangement; Described dust collector pole is comprised of deflection plate, has hook groove on dust collector pole.
Described rinse water arrangement comprises the circulation of flushing pipe and hull outside.
Circulation is comprised of make-up water pipeline, circulating water line, cyclic water tank, water pump, filter etc.
Usually, this device comprises Combined type electric demister body and circulation.Combined type electric demister body consists of deflector, discharge electrode, the dust suction utmost point, flushing pipe, housing and support.Deflector, discharge electrode, the dust suction utmost point, flushing pipe are positioned in housing, fixing by supporting.
The demist of the utility model Combined type electric adopts machinery and electric field combination demister pattern.
Between discharge electrode of the present utility model and dust collector pole, form electric field, under the effect of electric field force, droplet is shifted to dust collector pole, adopts flushing water to remove dust on dust collector pole.
The utility model Combined type electric demister, is mainly used in wet process of FGD, in the time of demist, can also remove dust in flue gas, PM
10, PM
2.5, the pollutant such as toxic heavy metal and sulfur trioxide.
The Specifeca tion speeification contrast of the utility model and mechanical demister, wet electrical dust precipitator is in Table 1.From table 1, contrast mechanical demister, the demist efficiency of the utility model Combined type electric demister rises to 85% by 70%, and this has fully guaranteed the elimination of gypsum rain and aerosol dust phenomenon; Contrast wet electrical dust precipitator, the demist efficiency of the utility model Compound Water ordinary telegram demister drops to 85% by 95%, and inner flue gas flow rate rises to 7 m/s by 2 m/s, and this has realized, in the situation that guaranteeing that gypsum rain and aerosol dust phenomenon are eliminated, reduce the device space and reduce equipment investment.
Table 1. Specifeca tion speeification
| Project | Unit | Combined type electric demister | Machinery demister | Wet electrical dust precipitator |
| Demist efficiency | % | 85 | 60 | 95 |
| Inner flue gas flow rate | m/ |
7 | 20 | 2 |
Accompanying drawing explanation
Connection diagram when Fig. 1 is the application of the utility model embodiment Combined type electric demister; Fig. 2 is embodiment Combined type electric demister body construction schematic diagram; Fig. 3 is the side-looking semi-section structural representation of Fig. 2; Fig. 4 is the dust collector pole structural representation of embodiment Combined type electric demister.
In figure, 1-Combined type electric demister body; 2-make-up water pipeline; 3-circulating water line; 4-cyclic water tank; 5-water pump; 6-filter; 7-smoke inlet; 8-discharge electrode; 9-housing; 10-flushing pipe; 11-high frequency electric source; 12-exhanst gas outlet; 13-deflector; 14-dust collector pole; 15-groove; 16-dust collector pole passage.
The specific embodiment
Below in conjunction with accompanying drawing, operation principle and the running status of this novel combined electrostatic precipitator are described further.
Embodiment: the main feature of the present embodiment Combined type electric demister is that dust collector pole (14) adopts baffle arrangement, has hook groove (15) on dust collector pole.
Specifically, the connection state during application of Combined type electric demister as shown in Figure 1, is connecting circulation outside Combined type electric demister body (1), and circulation is used for rinsing the upper ash content of dust collector pole (14).Circulation is comprised of make-up water pipeline (2), circulating water line (3), cyclic water tank (4), water pump (5), filter (6).
As shown in Figure 2, a plurality of parallel dust collector poles (14) are divided into some bottom flues (16) by flue to Combined type electric demister body (1) structure, and dust collector pole (14) front portion arranges deflector (13) and is used for uniform distribution air-flow.In dust collector pole bottom flue (16), be provided with discharge electrode (8).Wash tub pipe (10) is arranged at dust collector pole (14) top, and wash tub pipe (10) is connected with outer loop water system.The top of Combined type electric demister body (1) is high frequency electric source (11).High frequency electric source (11) is connected with discharge electrode (8) by cable.As shown in Figure 3, dust collector pole (14) is comprised of deflection plate dust collector pole (14) structure, and dust collector pole (14) is upper with hook groove (15).
During device operation, Combined type electric demister body (1) is positioned in the horizontal flue after WFGD, and flue gas enters from Combined type electric demister entrance (7), by deflector (13), distributes, and flows into each dust collector pole passage (16).Flue gas is accepted machinery and two kinds of method demists of electric field in dust collector pole passage (16).Machinery demist is embodied in, and dust collector pole (14) is comprised of deflection plate, and dust collector pole has hook groove on (14), and deflection plate and hook groove have the ability of trapping drop.Electric field demist is embodied in, and between discharge electrode (8) and dust collector pole (14), forms electric field, and under the effect of electric field force, drop is shifted to dust collector pole.Flue gas after purification is discharged from Combined type electric demister outlet (12).Flushing water rinses the flue dust of collecting on dust collector pole to get off to send into cyclic water tank (4), and the water in cyclic water tank (4) can be recycled after filter (6) purifies.
The electric field of Combined type electric demister not only can be removed droplet, and can also remove the flying dust in flue gas, to fine particulates PM
10, PM
2.5, toxic heavy metal and sulfur trioxide removed significant effect.
The design of dust collector pole (14) structure is emphasis of the present utility model and innovative point.Dust collector pole structure is determined after having adopted Fluid Mechanics Computation model optimization.
Claims (2)
1. a Combined type electric demister, comprises housing, and housing both sides are provided with smoke entrance, it is characterized in that being provided with some parallel dust collector poles in housing, and dust collector pole is divided into some bottom flues by flue; Dust collector pole front portion arranges deflector, is provided with discharge electrode in bottom flue, and dust collector pole top connects rinse water arrangement; Described dust collector pole is comprised of deflection plate, has hook groove on dust collector pole.
2. Combined type electric demister as claimed in claim 1, is characterized in that described rinse water arrangement comprises the circulation of flushing pipe and hull outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320532074.0U CN203448181U (en) | 2013-08-29 | 2013-08-29 | Combined type electric demister |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320532074.0U CN203448181U (en) | 2013-08-29 | 2013-08-29 | Combined type electric demister |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203448181U true CN203448181U (en) | 2014-02-26 |
Family
ID=50128086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320532074.0U Expired - Lifetime CN203448181U (en) | 2013-08-29 | 2013-08-29 | Combined type electric demister |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203448181U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103447151A (en) * | 2013-08-29 | 2013-12-18 | 南京龙源环保有限公司 | Compound type electric demister as well as process and use thereof |
| CN104801159A (en) * | 2015-05-13 | 2015-07-29 | 杭州天明环保工程有限公司 | Plasma smoke gas desulfurization denitration dust removal and demercuration all-in-one device |
-
2013
- 2013-08-29 CN CN201320532074.0U patent/CN203448181U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103447151A (en) * | 2013-08-29 | 2013-12-18 | 南京龙源环保有限公司 | Compound type electric demister as well as process and use thereof |
| CN104801159A (en) * | 2015-05-13 | 2015-07-29 | 杭州天明环保工程有限公司 | Plasma smoke gas desulfurization denitration dust removal and demercuration all-in-one device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 211101 Room 401, No. 1, Huashen Avenue, Yuhua District, Nanjing, Jiangsu Province Patentee after: Guoneng Longyuan environmental protection Nanjing Co.,Ltd. Address before: 210016 Room 401, apartment building 2, high tech Development Zone, Pukou District, Nanjing, Jiangsu Province Patentee before: NANJING LONGYUAN ENVIRONMENT Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140226 |