CN205613223U - Congeal wetting and reply gas cleaning system of closing by cable - Google Patents
Congeal wetting and reply gas cleaning system of closing by cable Download PDFInfo
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- CN205613223U CN205613223U CN201620282817.7U CN201620282817U CN205613223U CN 205613223 U CN205613223 U CN 205613223U CN 201620282817 U CN201620282817 U CN 201620282817U CN 205613223 U CN205613223 U CN 205613223U
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Abstract
The utility model belongs to the technical field of it is energy -concerving and environment -protective, specifically provide a congeal wetting and reply gas cleaning system of closing by cable, including wet flue gas desulfurization device, wet -type electrostatic precipitator and the chimney that connects gradually, be equipped with the heat transfer knockouts of cooling down and dewatering the flue gas in the wet -type electrostatic precipitator, the heat transfer knockouts is located wet -type electrostatic precipitator's outlet flue inboard. The utility model provides a congeal wetting and reply gas cleaning system of closing by cable carries out the condensation dehydration to the flue gas to can get rid of particulate matter in the flue gas, aerosol, various soluble salt etc. Realize the more comprehensive deep purification of wet -type electrostatic precipitator, solve " whiting cigarette " phenomenon when realizing the minimum discharge.
Description
Technical field
This utility model belongs to energy-conserving and environment-protective technical field, is specifically related to a kind of coagulating and gets wet electricity composite smoke purifying system.
Background technology
At present, coal-burning power plant is for realizing flue gas pollutant " minimum discharge ", it will usually use wet desulphurization device to carry out desulfurization, selects as terminal purifying apparatus, wet electrical dust precipitator, wet electrical dust precipitator can preferably be removed particulate matter.But, in practice it has proved that, owing to exiting flue gas is saturated wet flue gas, containing substantial amounts of steam in flue gas, " DABAI cigarette " phenomenon can be there is after smoke stack emission.In order to solve this problem, the most widely used flue gas heat-exchange unit in coal-burning power plant (GGH), but finally remove in a large number due to easily blocking, the intrinsic problem such as perishable.
It addition, the wet desulphurization device that coal-burning power plant uses needs to consume great lot of water resources in sweetening process so that thermal power plant becomes the second water consumption rich and influential family come after agricultural.Owing to current water resource is the deficientest, each state is all actively pushing forward the research work that coal steam-electric plant smoke moisture reclaims, and one of main design idea condenses recovery exactly.Containing substantial amounts of moisture in coal-fired plant flue gas, the recovery reclaiming simultaneous waste heat of flue gas moisture and the control discharged pollutants, if it is possible to reasonable disposition system, in recovered flue gas while moisture, the work of energy-saving and emission-reduction can also be worked in coordination with, brought considerable comprehensive benefit for power plant.
Furthermore, the strictest along with coal-burning power plant's environmental protection standard and policy, SO3 in flue gas, solubility salt, the removal of Hg will be become the emphasis of next step specification.Considering how that the collaborative wet electrical dust precipitator as terminal purifying apparatus removes the SO3 in flue gas, solubility salt, Hg etc., be one has prospective work very much.
Utility model content
The purpose of this utility model is: solves " DABAI cigarette " phenomenon while realizing flue gas pollutant " minimum discharge ", flue gas is carried out condensation dehydration, eliminates the particulate matter in flue gas, aerosol, various soluble-salts etc..
For this, this utility model provides a kind of coagulating and gets wet electricity composite smoke purifying system, including the wet desulphurization device being sequentially connected with, wet electrical dust precipitator and chimney, being provided with the heat exchange knockouts that flue gas carries out cooling and dewatering in described wet electrical dust precipitator, described heat exchange knockouts is positioned at inside the outlet flue of wet electrical dust precipitator.
Flue gas enters wet electrical dust precipitator after wet desulphurization device desulfurization, wet electrical dust precipitator is for carrying out deep purifying to flue gas, mainly remove particulate matter, SO3 aerosol etc., phase transformation is condensed afterwards through heat exchange knockouts, flue gas carries out cooling and dewatering and the SO3 removed in flue gas, solubility salt, Hg etc., and last flue gas is discharged after the outlet flue of wet electrical dust precipitator enters into chimney.
Further, described wet electrical dust precipitator uses the structure of bottom in and top out, connected by gas approach between described wet desulphurization device and wet electrical dust precipitator, described gas approach is positioned at the top of wet desulphurization device, and its entrance is connected with wet desulphurization device top, its outlet is connected with the smoke inlet of wet electrical dust precipitator side lower part；Connected by exhaust pass between described wet electrical dust precipitator and chimney, described exhaust pass is positioned at above wet electrical dust precipitator, and its entrance is connected with the outlet flue at wet electrical dust precipitator top, its outlet is connected with chimney, and described heat exchange knockouts is positioned at the top of wet electrical dust precipitator and below outlet flue.
Such scheme brings following advantage: heat exchange knockouts can carry out cooling and dewatering to flue gas, making the solidifying electricity composite smoke purifying system exiting flue gas that gets wet is semi-saturation wet flue gas, flue gas cool-down 2～5 DEG C, can alleviate even solution " DABAI cigarette " phenomenon after smoke stack emission significantly；
Secondly, heat exchange knockouts is while condensed water, there is solidifying change in the particle making flue gas, the aerocolloidal cohesions such as fine particulates, ultra-fine droplet and soluble salt and gaseous contaminant (SO3, SO etc.) shift to liquid phase, promote fine particulates and the trapping of multi-pollutant, realize the most up to standard while guarantee full working scope stablizes minimum discharge, it is to avoid the repeated construction in later stage, reduce the Environmental Inputs of power plant.
And heat exchange knockouts is positioned at the top of wet electrical dust precipitator, heat exchange knockouts is during condensed water, water droplet converges the effect that can produce " drizzle " from top to bottom, the materials such as particulate matter in flue gas can be trapped again, there is certain collaborative dustproof function, it also is able to preferably wash away the internals configuration of wet electrical dust precipitator, it is to avoid its ash deposits corrosion simultaneously.
Especially, the anode of described wet electrical dust precipitator is the cellular dust collecting electrode of regular hexagon electroconductive frp, the length of side 0.12～0.20 m, highly 2.0～7.0 m, and corresponding cathode line is fishbone needle-like titanium alloy nonflexible line, has the characteristics such as corrosion-resistant, discharge effect is good.
Especially, described heat exchange knockouts is formed by organizing straight type capillary tube more, and often group capillary tube includes two bundle capillary tube tube banks, and the tube bank of every capillary tube is made up of many capillaries unit, and what every capillary tube was restrained is respectively arranged at the two ends with cooling water inlet and coolant outlet.
Often two bundle capillary tube tube banks in group capillary tube are fixed by multiple punching fixed plates, and punching fixed plate is provided with multiple through hole corresponding with capillary unit.
In order to ensure the higher coefficient of heat transfer, the many capillaries unit in the tube bank of every capillary tube uses stagger arrangement or in-line mode to arrange, and the centre distance of adjacent capillaries unit is 25～35mm.Every 3 groups of capillary tubies are a module, and heat exchange knockouts is made up of multiple modules, are spaced 0.40～0.55m between tube bank.Modularization assembling is easy to in-site installation, reduces difficulty of construction, reduces construction period.
It addition, for adapting to sour environment, it is to avoid corrosion, many capillaries unit of described composition tube bank and punching fixed plate are specific modified fluoroplastics material, and capillary dimension is φ 8 × 0.7 or φ 5 × 0.4 or other close specifications.
As improving further, air intake district, bottom height in corresponding raising wet electrical dust precipitator, being provided with flow distributor in described wet electrical dust precipitator, described flow distributor is positioned at above the smoke inlet of wet electrical dust precipitator, it is possible to play water conservancy diversion, current-sharing and the effect of pre-dedusting.
Described flow distributor includes the flow guiding disc matched with wet electrical dust precipitator internal diameter, and described flow guiding disc offers multiple regular hexagon air-flow through hole, and described air-flow through hole is cellular setting, and the length of side is 0.10～0.18m, and the degree of depth is 0.20～0.35m,.Flue gas circulation area increases, thus flow velocity reduces, and extended residence time is conducive to improving dust removing effects.
Further, bottom described wet electrical dust precipitator, be provided with collecting tank, described collecting tank be A/F be 1.5～3.0m, the cone bucket of a height of 1.0～1.5m.Existing collecting tank has mostly applied mechanically dry collector ash bucket form, but find from practical engineering experience, the buck relatively low for solid content that wet electrical dust precipitator is collected, its mobility is preferable, so the flowing of its normal slope only need to be considered, opening can overflow smoothly, and in this utility model use cone bucket make water have good mobility.
As further improving, described collecting tank is connected with water treating pond by pipeline, described water treating pond is connected with wet desulphurization device upper lateral part by pipeline, and the pipeline on the pipeline between described collecting tank and water treating pond, between water treating pond and wet desulphurization device is respectively equipped with flushing pump.The condensed water that collecting tank is collected is after water treating pond processes, then delivers to wet desulphurization device by flushing pump and use as flushing water, and for water-deficient area, environment, economic benefit are the most obvious.
The beneficial effects of the utility model: this coagulating that this utility model provides gets wet electricity composite smoke purifying system, flue gas is carried out condensation dehydration, and the particulate matter in flue gas, aerosol, various soluble-salts etc. can be removed, realize wet electrical dust precipitator deep purifying more comprehensively, while realizing minimum discharge, solve " DABAI cigarette " phenomenon.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the individual module structural representation of heat exchange knockouts in this utility model.
Fig. 3 is the sectional view of flow distributor in this utility model.
Fig. 4 is the sectional view of fixed plate of punching in this utility model.
Description of reference numerals: 1, wet desulphurization device；2, gas approach；3, wet electrical dust precipitator；3.1, smoke inlet；3.2, outlet flue；4, flow distributor；4.1, flow guiding disc；4.2, air-flow through hole；5, chimney；6, exhaust pass；7, heat exchange knockouts；7.1, cooling water inlet；7.2, coolant outlet；7.3, capillary tube tube bank；7.4, punching fixed plate；7.5, through hole；8, collecting tank；9, flushing pump；10, water treating pond.
Detailed description of the invention
Below in conjunction with the accompanying drawings and detailed description of the invention, it is further elucidated with this utility model.
Embodiment 1:
One as shown in Figure 1 is solidifying gets wet electricity composite smoke purifying system, including the wet desulphurization device 1 being sequentially connected with, wet electrical dust precipitator 3 and chimney 5, being provided with the heat exchange knockouts 7 that flue gas carries out cooling and dewatering in described wet electrical dust precipitator 3, described heat exchange knockouts 7 is positioned at inside the outlet flue 3.2 of wet electrical dust precipitator 3.Described wet electrical dust precipitator 3 uses the structure of bottom in and top out, connected by gas approach 2 between described wet desulphurization device 1 and wet electrical dust precipitator 3, described gas approach 2 is positioned at the top of wet desulphurization device 1, and its entrance exports with the demister of wet desulphurization device 1 inner top and is connected, its outlet is connected with the smoke inlet 3.1 of wet electrical dust precipitator 3 side lower part；Connected by exhaust pass 6 between described wet electrical dust precipitator 3 and chimney 5, described exhaust pass 6 is positioned at above wet electrical dust precipitator 3, and its entrance is connected with the outlet flue 3.2 at wet electrical dust precipitator 3 top, its outlet is connected with chimney 5, and described heat exchange knockouts 7 is positioned at the top of wet electrical dust precipitator 3 and below outlet flue 3.2.Flooding nozzle distance upper cathodic crossbeam 0.3～0.5 m of wet electrical dust precipitator 3, injector spacing is anode tube single tube more than 2 times.
Especially, as shown in Figures 2 and 4, heat exchange knockouts 7 is formed by organizing straight type capillary tube more, and often group capillary tube includes two bundle capillary tube tube banks 7.3, every capillary tube tube bank 7.3 is made up of many capillaries unit, and what every capillary tube was restrained is respectively arranged at the two ends with cooling water inlet 7.1 and coolant outlet 7.2.Often two bundle capillary tube tube banks 7.3 in group capillary tube are fixed by multiple punching fixed plates 7.4, and punching fixed plate 7.4 is provided with multiple through hole 7.5 corresponding with capillary unit.
In order to ensure the higher coefficient of heat transfer, the many capillaries unit in the tube bank of every capillary tube uses stagger arrangement or in-line mode to arrange, and the centre distance of adjacent capillaries unit is 25～35mm.Every 3 groups of capillary tubies are a module, and heat exchange knockouts is made up of multiple modules, are spaced 0.40～0.55m between tube bank.
Especially, the anode of described wet electrical dust precipitator 3 is the cellular dust collecting electrode of regular hexagon electroconductive frp, the length of side 0.12～0.20 m, highly 2.0～7.0 m, and corresponding cathode line is fishbone needle-like titanium alloy nonflexible line, has the characteristics such as corrosion-resistant, discharge effect is good.
It addition, for adapting to sour environment, it is to avoid corrosion, many capillaries unit of described composition tube bank and punching fixed plate are specific modified fluoroplastics material, and capillary dimension is φ 8 × 0.7 or φ 5 × 0.4 or other close specifications.
Specific works process is as follows: flue gas carries out desulfurization through wet desulphurization device, except mist and rough dusting, then wet electrical dust precipitator anode and cathode main body dedusting region deep purifying is entered by gas approach, mainly remove particulate matter, SO3 aerosol etc., phase transformation is condensed afterwards through heat exchange knockouts, flue gas carries out cooling and dewatering and the SO3 removed in flue gas, solubility salt, Hg etc., and the flue gas after cooling process is discharged after entering into chimney by exhaust pass.
Embodiment 2:
On the basis of embodiment 1, air intake district, bottom height in corresponding raising wet electrical dust precipitator, as it is shown in figure 1, the bottom in wet electrical dust precipitator is provided with flow distributor 4, described flow distributor 4 is positioned at above the smoke inlet 3.1 of wet electrical dust precipitator 3.As shown in Figure 3, flow distributor 4 includes the flow guiding disc 4.1 matched with wet electrical dust precipitator internal diameter, and described flow guiding disc 4.1 offers multiple regular hexagon air-flow through hole 4.2, and described air-flow through hole 4.2 is in cellular setting, the length of side is 0.10～0.18m, and the degree of depth is 0.20～0.35m.
Entering the flue gas in wet electrical dust precipitator 3 from gas approach 2 and first pass through airflow distribution device 4, airflow distribution device 4 plays water conservancy diversion, current-sharing and the effect of pre-dedusting.
Embodiment 3:
On the basis of embodiment 1 or 2, further, bottom described wet electrical dust precipitator 3, it is provided with collecting tank 8, as it is shown in figure 1, collecting tank 8 is 1.5～3.0m for A/F, the cone bucket of a height of 1.0～1.5m.Described collecting tank 8 is connected with water treating pond 10 by pipeline, described water treating pond 10 is connected with wet desulphurization device 1 upper lateral part by pipeline, and the pipeline on the pipeline between described collecting tank 8 and water treating pond 10, between water treating pond 10 and wet desulphurization device 1 is respectively equipped with flushing pump 9.
The condensed water that collecting tank 8 is collected is after water treating pond 10 processes, then is delivered to wet desulphurization device 1 used as flushing water by flushing pump 9, and for water-deficient area, environment, economic benefit are the most obvious.
Exemplified as above is only to illustration of the present utility model, is not intended that the restriction to protection domain of the present utility model, within the every and same or analogous design of this utility model belongs to protection domain of the present utility model.
Claims (8)
1. one kind solidifying gets wet electricity composite smoke purifying system, it is characterized in that: include wet desulphurization device (1), wet electrical dust precipitator (3) and the chimney (5) being sequentially connected with, being provided with the heat exchange knockouts (7) that flue gas carries out cooling and dewatering in described wet electrical dust precipitator (3), described heat exchange knockouts (7) is positioned at outlet flue (3.2) inner side of wet electrical dust precipitator (3)；
Described heat exchange knockouts (7) is formed by organizing straight type capillary tube more, often group capillary tube includes two bundle capillary tubies tube bank (7.3), every capillary tube tube bank is made up of many capillaries unit, every capillary tube tube bank (7.3) be respectively arranged at the two ends with cooling water inlet (7.1) and coolant outlet (7.2).
2. a kind of coagulating as claimed in claim 1 gets wet electricity composite smoke purifying system, it is characterized in that: connected by gas approach (2) between described wet desulphurization device (1) with wet electrical dust precipitator (3), described gas approach (2) is positioned at the top of wet desulphurization device (1), and its entrance is connected with wet desulphurization device (1) top, its outlet is connected with the smoke inlet (3.1) of wet electrical dust precipitator (3) side lower part；Connected by exhaust pass (6) between described wet electrical dust precipitator (3) with chimney (5), described exhaust pass (6) is positioned at wet electrical dust precipitator (3) top, and its entrance is connected with the outlet flue (3.2) at wet electrical dust precipitator (3) top, its outlet is connected with chimney (5), and described heat exchange knockouts (7) is positioned at the top of wet electrical dust precipitator (3) and in outlet flue (3.2) lower section.
3. a kind of coagulating as claimed in claim 2 gets wet electricity composite smoke purifying system, it is characterized in that: often two bundles capillary tube tube bank (7.3) in group capillary tube are fixed by multiple punching fixed plates (7.4), and punching fixed plate (7.4) is provided with multiple through hole (7.5) corresponding with capillary unit.
4. a kind of coagulating as claimed in claim 3 gets wet electricity composite smoke purifying system, it is characterised in that: the many capillaries unit in every capillary tube tube bank (7.3) uses stagger arrangement or in-line mode to arrange, and the centre distance of adjacent capillaries unit is 25-35mm.
5. a kind of coagulating as claimed in claim 2 gets wet electricity composite smoke purifying system, it is characterized in that: be provided with flow distributor (4) in described wet electrical dust precipitator (3), described flow distributor (4) is positioned at smoke inlet (3.1) top of wet electrical dust precipitator (3).
6. a kind of coagulating as claimed in claim 5 gets wet electricity composite smoke purifying system, it is characterized in that: described flow distributor (4) includes the flow guiding disc (4.1) matched with wet electrical dust precipitator (3) internal diameter, multiple regular hexagon air-flow through hole (4.2) is offered on described flow guiding disc (4.1), described air-flow through hole (4.2) is in cellular setting, the length of side is 0.10～0.18m, and the degree of depth is 0.20～0.35m.
7. a kind of coagulating as claimed in claim 1 or 2 gets wet electricity composite smoke purifying system, it is characterized in that: described wet electrical dust precipitator (3) bottom is provided with collecting tank (8), described collecting tank (8) be A/F be 1.5～3.0m, the cone bucket of a height of 1.0～1.5m.
8. a kind of coagulating as claimed in claim 7 gets wet electricity composite smoke purifying system, it is characterized in that: described collecting tank (8) is connected with water treating pond (10) by pipeline, described water treating pond (10) is connected with wet desulphurization device (1) upper lateral part by pipeline, and the pipeline on the pipeline between described collecting tank (8) and water treating pond (10), between water treating pond (10) and wet desulphurization device (1) is respectively equipped with flushing pump (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620282817.7U CN205613223U (en) | 2016-04-07 | 2016-04-07 | Congeal wetting and reply gas cleaning system of closing by cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620282817.7U CN205613223U (en) | 2016-04-07 | 2016-04-07 | Congeal wetting and reply gas cleaning system of closing by cable |
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| CN205613223U true CN205613223U (en) | 2016-10-05 |
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| CN201620282817.7U Active CN205613223U (en) | 2016-04-07 | 2016-04-07 | Congeal wetting and reply gas cleaning system of closing by cable |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106390695A (en) * | 2016-11-29 | 2017-02-15 | 洛阳瑞昌石油化工设备有限公司 | Flue gas dehumidification and white removal apparatus for wet desulfurization |
| CN111692522A (en) * | 2020-05-09 | 2020-09-22 | 上海工程技术大学 | Disc-shaped polishing-shaped diversion structure in gasification equipment |
-
2016
- 2016-04-07 CN CN201620282817.7U patent/CN205613223U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106390695A (en) * | 2016-11-29 | 2017-02-15 | 洛阳瑞昌石油化工设备有限公司 | Flue gas dehumidification and white removal apparatus for wet desulfurization |
| CN111692522A (en) * | 2020-05-09 | 2020-09-22 | 上海工程技术大学 | Disc-shaped polishing-shaped diversion structure in gasification equipment |
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Address after: 210031 Pudong Road, Pukou District, Jiangsu, No. 10, No. Patentee after: National Electric Environmental Protection Research Institute Co., Ltd. Address before: 210031 Pudong Road, Pukou District, Jiangsu, No. 10, No. Patentee before: State Power Environmental Protection Research Institute |