CN102294302A - Upper inlet type electrical demister for smoke desulphurization - Google Patents
Upper inlet type electrical demister for smoke desulphurization Download PDFInfo
- Publication number
- CN102294302A CN102294302A CN201110177043A CN201110177043A CN102294302A CN 102294302 A CN102294302 A CN 102294302A CN 201110177043 A CN201110177043 A CN 201110177043A CN 201110177043 A CN201110177043 A CN 201110177043A CN 102294302 A CN102294302 A CN 102294302A
- Authority
- CN
- China
- Prior art keywords
- electrostatic precipitator
- flue gas
- chamber
- demister
- air chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention discloses an upper inlet type electrical demister for smoke desulphurization. The overall structure of the demister comprises, from top to bottom, an upper air chamber, a middle air chamber, and a lower air chamber which are sequentially communicated, wherein the upper air chamber has an electrical demister smoke inlet for the top-down flow of the accessed smoke in the middle air chamber. According to the invention, the smoke flow mode is designed in a top-down way, so after connecting the electrical demister with a peripheral desulfurization tower, there is no need to arrange the electrical demister on the high end of the one-piece structure, the electrical demister only needs to be arranged on a side of the desulfurization tower in a split way, and the smoke desulphurized by the desulfurization tower can access the electrical demister in the top-down way for demisting processing. The electrical demister of the present invention, which has the advantages of reduction of the installation height, cost saving, and convenient installation and usage maintenance, can be used for the smoke purification of coal/oil-fired power stations or thermoelectric boilers.
Description
Technical field
The present invention relates to the electrostatic precipitator used in a kind of coal and oil power station or the water-tube boiler flue gas desulfurization.
Background technology
China thermal power station coal burning flue gas desulfurization is mainly based on the desulfurization of calcium method and the ammonia process of desulfurization at present.The desulfurization of calcium method is an absorbent with lime stone or lime, and accessory substance is a gypsum.The ammonia process of desulfurization is absorbent with ammonia, and accessory substance is an ammonium sulfate.Which kind of desulfurization method no matter, discharged flue gas finally all must be after demist qualified discharge.
Conventional demist mostly adopts two-layer flap demister to come demist, this mode demist weak effect, can only remove the above droplet of 40 μ m, removal effect to fine droplets is limited, can not remove micronic dust in the flue gas and other trickle aerosol etc., the water consumption is big in causing discharging fume, smoke evacuation turbidity height, and effect is poor especially in the ammonia process of desulfurization.The employing of desulfurization electrostatic precipitator with the seizure particle size range of droplet from traditional significantly being extended to greater than 2 μ m greater than 40 μ m, success solves that ammonium salt is carried secretly, acid mist exceeds standard, the escaping of ammonia, chimney crystallization caking and aerosol secondary pollution problems, reduce resources loss simultaneously, improved economy.
China's electrostatic precipitator is applied in industries such as sulfuric acid, smelting, chemical industry mostly, and conventional electrostatic precipitator all is following intake method, and promptly flue gas is that bottom from electrostatic precipitator enters, and from bottom to top, purifies the back flue gas and discharges from the electrostatic precipitator top exit.Along with constantly bringing forth new ideas of electric demist technology, electrostatic precipitator is also applied in the flue gas desulfurization industry.According to the requirement of sulfur removal technology, after electrostatic precipitator must be installed in desulfurizing tower, just flue gas must just can enter electrostatic precipitator earlier through desulfurizing tower.Conventional desulfurization and electric demist integrated apparatus are erected at electrostatic precipitator on the desulfurization cat head, and the electrostatic precipitator gas approach is relative with the desulfurization exhanst gas outlet down.During work, behind the desulfurization exhanst gas outlet of flue gas through the desulfurizing tower upper end, directly enter the gas approach of electrostatic precipitator bottom, flue gas enters electrostatic precipitator from bottom to top.
Because desulfurizing tower and electrostatic precipitator integrated device setting height(from bottom) are totally higher, not only increase the cost of equipment and base support, and have increased the installation and the regular maintenance difficulty of electrostatic precipitator.
Summary of the invention
Purpose of the present invention is for a kind of air admission type flue gas desulfurization electrostatic precipitator of going up is provided.
The technical scheme that the present invention solves its technical problem is:
A kind of air admission type flue gas desulfurization electrostatic precipitator of going up, its overall structure is followed successively by upper chamber, middle air chamber, the lower chamber that is communicated with in turn from top to bottom, and described upper chamber has the electrostatic precipitator gas approach that the flue gas of the feeding of making flows from top to bottom in middle air chamber.
As further improvement in the technical proposal, described upper chamber inside is provided with airflow-distribution board and spray irrigation device from top to bottom in turn.
As further improvement in the technical proposal, be provided with electric field generation device in the described middle air chamber.
As further improvement in the technical proposal, the present invention also is provided with power supply, the below of described spray irrigation device is provided with the negative electrode upper frame, vertically distributing in the middle air chamber by the anode tube bank and the cathode line of described power supply power supply, described cathode line is vertical distribution below the negative electrode upper frame, and constitutes electric field generation device with anode tube bank, power supply.
As further improvement in the technical proposal, described lower chamber is provided with the demist exhanst gas outlet, under be provided with collecting tank.
As further improvement in the technical proposal, the top of described upper chamber is provided with the insulation chamber, and the outdoor hot blast protective device that also is connected with insulate.
The invention has the beneficial effects as follows: the present invention is designed to the type of flow of flue gas from top to bottom, make in the present invention with after the desulfurizing tower of peripheral hardware is connected, electrostatic precipitator needn't be located at the high end position of integral structure, only need be arranged on one side of desulfurizing tower, be split type layout, the flue gas after the desulfurizing tower desulfurization can carry out the demist processing in the from top to down feeding electrostatic precipitator.The present invention is used for demist behind the ammonia type flue gas desulfurizing, not only can solve big with water loss, the sulphur ammonium is carried secretly, acid mist exceeds standard, the escaping of ammonia, chimney crystallization caking and aerosol secondary pollution problems, it is low also to have setting height(from bottom), bearing height reduces, with low cost, be convenient to the advantage of installation and maintenance, can also shorten the length of exhaust pass, lower the system airflow resistance.The present invention can be used for the gas cleaning of coal and oil power station or water-tube boiler.
Description of drawings
The present invention is further illustrated below in conjunction with drawings and Examples.
Fig. 1 be the present invention with overall structure schematic diagram after desulfurizing tower that the split of peripheral hardware is arranged is connected, wherein the present invention is in the half-sectioned attitude, the arrow in the diagram represents that flue gas moves towards.
The specific embodiment
With reference to Fig. 1, a kind of air admission type flue gas desulfurization electrostatic precipitator of going up, its overall structure is followed successively by in turn upper chamber 31, middle air chamber 32, the lower chamber 33 that is communicated with from top to bottom, and described upper chamber 31 has the electrostatic precipitator gas approach 301 that the flue gas of the feeding of making flows from top to bottom in middle air chamber 32.Particularly, the opening of described electrostatic precipitator gas approach 301 be towards.Described electrostatic precipitator gas approach 301 is connected with desulfurizing tower 1, and described desulfurizing tower 1 has desulfurization exhanst gas outlet 11, and the opening of desulfurization exhanst gas outlet 11 is oriented upwards, and it is communicated with by being connected flue 2 with electrostatic precipitator gas approach 301.During work, the flow direction of flue gas electrostatic precipitator 3 of coming out from desulfurizing tower 1 is for from top to bottom.Certainly, described desulfurization exhanst gas outlet 11 is made as up with electrostatic precipitator gas approach 301 openings, and refer to that not only the two is a parallel vertical, as long as the orientation is for up substantially, allow electrostatic precipitator 3 interior flue gas integral body move towards to from top to bottom, then its concrete pointing direction can be according to the actual conditions setting, even be the side direction intake method, it also belongs to the variant that is equal to of the present invention.
Be further used as preferred embodiment, described upper chamber 31 inside are provided with airflow-distribution board 305 and spray irrigation device 304 from top to bottom in turn.Particularly, described airflow-distribution board 305 is used for air-flow is disperseed for to have the porous plate that is evenly distributed; The solid particulate matter that spray irrigation device 304 is used for catching on the cleaning electrode, crystal or thickness body.
Be further used as preferred embodiment, be provided with electric field generation device in the described middle air chamber 32.
Be further used as preferred embodiment, the present invention also is provided with power supply 4, the below of described spray irrigation device 304 is provided with negative electrode upper frame 306, vertically distributing in the middle air chamber 32 by the anode tube bank 307 and the cathode line 308 of described power supply 4 power supplies, described cathode line 308 vertical distribution below negative electrode upper frame 306, and constitute electric field generation device with anode tube bank 307, power supply 4.Particularly, described power supply 4 is located on upper chamber 31 tops, and is high voltage source, can be electrostatic precipitator 3 power supplies.
Be further used as preferred embodiment, described lower chamber 33 is provided with demist exhanst gas outlet 310, under be provided with collecting tank 311.Collecting tank 311 is used to collect liquid and the flushing liquor by under removing.
Be further used as preferred embodiment, the top of described upper chamber 31 is provided with insulation chamber 302, the insulation chamber 302 outer hot blast protective devices 303 that also are connected with.
Below with actual conditions, for an embodiment:
Pending boiler smoke at first enters desulfurizing tower 1 desulfurization by the gas approach of desulfurizing tower 1, and in desulfurizing tower 1, flue gas contacts the SO in the flue gas with the absorption liquid ammoniacal liquor that the spraying layer of desulfurizing tower 1 sprays earlier from bottom to top
2And NO
xFinish the heat chemistry absorption and enter liquid phase.The SO that is absorbed by liquid absorption
2And NO
xWith NH
3Comprise (NH in conjunction with generating
4)
2SO
3, NH
4HSO
3, (NH
4)
2SO
4, NH
4NO
3Mixed solution, total salt concentration is controlled to be 5%-50%.After spray absorbed, flue gas was discharged from desulfurization exhanst gas outlet 11 in desulfurizing tower 1.Described spraying layer is the conventional components of desulfurizing tower 1.
The flue gas of discharging from desulfurization exhanst gas outlet 11 contains a large amount of without droplet that removes and aerosol cloud, enters electrostatic precipitator 3 through connecting flue 2 from electrostatic precipitator gas approach 301, and after airflow-distribution board 305 evenly disperse the back flow in air chamber 32.Anode tube bank 307 and cathode line 308 produce high voltage electric fields, and under high-pressure electrostatic, gas ionization also makes that wherein droplet and aerosol particle are charged, and the electrodes that middle air chamber 32 vertically distributes can efficiently capture droplet and aerosol, suppress residual ammonia and overflow, control SO
3And the discharging of ammonium salt particulate, purify back tail gas through 310 dischargings of demist exhanst gas outlet.
Described desulfurizing tower 1 is conventional ammonia process of desulfurization tower or absorption tower.Electrostatic precipitator 3 adopts wet type electricity demist/wet-esp mode.One electric field, two electric fields or many electric field structures can be set.Electric field is made of with cathode line 308 vertical anode tube bank 307, and it can be circular, square or regular hexagon that anode is restrained 307 passages, and anode restrains 307 hole internal diameters or inscribed circle diameter is 300mm ~ 480mm, length 3m ~ 6m; Cathode line 308 can be jaggies or spongy lead, and its top is fixing by 306 suspentions of negative electrode upper frame, and the below is by negative electrode underframe 309 location.Spray irrigation device 304 places the top of upper chamber negative electrode upper frame 306, is used for the spray Cleaning for High Capacity electrode.
Liquid of being collected by electrostatic precipitator and spray Cleaning for High Capacity liquid flow into collecting tank 311, return the tower fluid circulation system or efflux.
The present invention compares with the electrostatic precipitator of following air admission type, reduced electrostatic precipitator setting height(from bottom), to have reduced flue circuitous, except reaching, the choice that has increased the desulfurization electrostatic precipitator for the occasion or the restricted clearance of place anxiety is installed, working service is convenient except that fog effect.
More than be that better embodiment of the present invention is specified, but the invention is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent variations or replacement under the prerequisite of spirit of the present invention, modification that these are equal to or replacement all are included in the application's claim institute restricted portion.
Claims (6)
1. go up air admission type flue gas desulfurization electrostatic precipitator for one kind, it is characterized in that: its overall structure is followed successively by in turn upper chamber (31), middle air chamber (32), the lower chamber (33) that is communicated with from top to bottom, and described upper chamber (31) has the electrostatic precipitator gas approach (301) that the flue gas of the feeding of making flows from top to bottom in middle air chamber (32).
2. the air admission type flue gas desulfurization electrostatic precipitator of going up according to claim 1, it is characterized in that: described upper chamber (31) inside is provided with airflow-distribution board (305) and spray irrigation device (304) from top to bottom in turn.
3. the air admission type flue gas desulfurization electrostatic precipitator of going up according to claim 2 is characterized in that: be provided with electric field generation device in the air chamber (32) in described.
4. the air admission type flue gas desulfurization electrostatic precipitator of going up according to claim 3, it is characterized in that: it also is provided with power supply (4), the below of described spray irrigation device (304) is provided with negative electrode upper frame (306), vertically distributing in the middle air chamber (32) by anode tube bank (307) and the cathode line (308) of described power supply (4) power supply, described cathode line (308) is in the below vertical distribution of negative electrode upper frame (306), and constitutes electric field generation device with anode tube bank (307), power supply (4).
5. the air admission type flue gas desulfurization electrostatic precipitator of going up according to claim 1, it is characterized in that: described lower chamber (33) is provided with demist exhanst gas outlet (310), under be provided with collecting tank (311).
6. according to each described air admission type flue gas desulfurization electrostatic precipitator of going up of claim 1 to 5, it is characterized in that: the top of described upper chamber (31) is provided with insulation chamber (302), the outer hot blast protective device (303) that also is connected with in insulation chamber (302).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110177043A CN102294302A (en) | 2011-06-28 | 2011-06-28 | Upper inlet type electrical demister for smoke desulphurization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110177043A CN102294302A (en) | 2011-06-28 | 2011-06-28 | Upper inlet type electrical demister for smoke desulphurization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102294302A true CN102294302A (en) | 2011-12-28 |
Family
ID=45355118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110177043A Pending CN102294302A (en) | 2011-06-28 | 2011-06-28 | Upper inlet type electrical demister for smoke desulphurization |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102294302A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103372356A (en) * | 2012-04-19 | 2013-10-30 | 江苏兴邦环保工程科技有限公司 | Removing device of fine dust particles and trace elements |
| CN103721554A (en) * | 2013-12-10 | 2014-04-16 | 中国华电工程(集团)有限公司 | Electric demisting method and device for capturing and collecting fine particulate matters in flue gas generated after wet desulphurization |
| CN104084008A (en) * | 2014-07-15 | 2014-10-08 | 浙江惠尔涂装环保设备有限公司 | Structure for fixing stainless steel tubes in waste gas treatment tube |
| CN104190198A (en) * | 2014-09-28 | 2014-12-10 | 上海龙净环保科技工程有限公司 | Vertical flow wet-type electric precipitator and wet electric precipitation method |
| CN107224864A (en) * | 2017-07-21 | 2017-10-03 | 北京哈宜节能环保科技开发股份有限公司 | The device and its application method of combined pollutant in a kind of removing fire coal boiler fume |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2592278Y (en) * | 2002-12-31 | 2003-12-17 | 辛泽祝 | Reinforced polypropylene electric defroster |
| CN101811093A (en) * | 2010-03-18 | 2010-08-25 | 广西明利集团有限公司 | Phosphoric acid tail gas electric demister |
| CN102059045A (en) * | 2010-11-22 | 2011-05-18 | 浙江富春江环保热电股份有限公司 | Venturi atomization compound wet type electrostatic flue gas treatment reactor |
-
2011
- 2011-06-28 CN CN201110177043A patent/CN102294302A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2592278Y (en) * | 2002-12-31 | 2003-12-17 | 辛泽祝 | Reinforced polypropylene electric defroster |
| CN101811093A (en) * | 2010-03-18 | 2010-08-25 | 广西明利集团有限公司 | Phosphoric acid tail gas electric demister |
| CN102059045A (en) * | 2010-11-22 | 2011-05-18 | 浙江富春江环保热电股份有限公司 | Venturi atomization compound wet type electrostatic flue gas treatment reactor |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103372356A (en) * | 2012-04-19 | 2013-10-30 | 江苏兴邦环保工程科技有限公司 | Removing device of fine dust particles and trace elements |
| CN103721554A (en) * | 2013-12-10 | 2014-04-16 | 中国华电工程(集团)有限公司 | Electric demisting method and device for capturing and collecting fine particulate matters in flue gas generated after wet desulphurization |
| CN103721554B (en) * | 2013-12-10 | 2016-01-06 | 中国华电工程(集团)有限公司 | The electric defogging method of the fine particle in trapping wet-method desulfurized fume and device |
| CN104084008A (en) * | 2014-07-15 | 2014-10-08 | 浙江惠尔涂装环保设备有限公司 | Structure for fixing stainless steel tubes in waste gas treatment tube |
| CN104190198A (en) * | 2014-09-28 | 2014-12-10 | 上海龙净环保科技工程有限公司 | Vertical flow wet-type electric precipitator and wet electric precipitation method |
| CN104190198B (en) * | 2014-09-28 | 2015-09-23 | 上海龙净环保科技工程有限公司 | A kind of vertical current wet electrical dust precipitator and wet electro dust removing method |
| CN107224864A (en) * | 2017-07-21 | 2017-10-03 | 北京哈宜节能环保科技开发股份有限公司 | The device and its application method of combined pollutant in a kind of removing fire coal boiler fume |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103861438B (en) | The system and method for deep removal coal-fired flue-gas oxysulfide | |
| CN104226479A (en) | Efficient wet type electric dedusting and purifying device and method for smoke obtained after wet desulphurization | |
| CN105617852B (en) | Desulfurization and dedusting absorption tower equipped with porous current equalizer | |
| CN102294302A (en) | Upper inlet type electrical demister for smoke desulphurization | |
| CN105214465A (en) | The apparatus and method of integration wet process of FGD dedusting | |
| CN108479369A (en) | A kind of ultra-clean discharge ammonia desulfuration equipment and technique | |
| CN104874481A (en) | Wet type electrostatic dust collector for semidry method (CFB) waste water zero discharging | |
| CN202823151U (en) | Multistage spray efficient wet process of flue gas desulfurization and synergistic mercury removal integrated device | |
| CN103785255A (en) | Efficient fuel gas treatment system for boiler | |
| CN104208996A (en) | Desulfurizing and dedusting apparatus | |
| CN105854551A (en) | Double-alkali double-circulation desulfurization absorption system and method | |
| CN205435460U (en) | Integrative tower is handled to dry and cold formula flue gas ground fog ultra -clean | |
| CN102423593A (en) | Method for simultaneously dedusting, desulphurizing and denitrating boiler flue gas in coal-fired industry | |
| CN102266718B (en) | Semi dry process flue gas desulfurization method of circulating fluidized bed based on circulation, and apparatus thereof | |
| CN205288078U (en) | Flue gas thick liquid distributes again sprays desulfurization dust collector | |
| CN105536462A (en) | Glass furnace kiln burnt petroleum coke high-temperature flue gas purification device and purification method | |
| CN103041690A (en) | Removal tower and method for collaboratively desulfurizing and removing PM2.5 (Particulate Matter 2.5) in smoke | |
| CN108339669A (en) | A kind of Wet type electric dust-removing device removing fine particle | |
| CN204018028U (en) | A kind of high-efficient wet-type electric precipitation purifier of wet-method desulfurized fume | |
| CN108927287A (en) | A kind of boiler of power plant flue gas wet electrical dust precipitator | |
| CN107243248A (en) | A kind of folded plate type gas-liquid part flow arrangement | |
| CN209254469U (en) | A kind of flue gas purification device | |
| CN203803351U (en) | System for deeply removing sulfur oxides in coal-fired flue gas | |
| CN208356498U (en) | A kind of flue gas desulfurization and denitrification integrated apparatus | |
| CN102671501A (en) | Method for solving ammonia desulphurization tail gas smoke zone |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20111228 |