CN103301726B - Desulfurization and denitrification device based on adjusting type active particle exciters - Google Patents
Desulfurization and denitrification device based on adjusting type active particle exciters Download PDFInfo
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- CN103301726B CN103301726B CN201310237611.3A CN201310237611A CN103301726B CN 103301726 B CN103301726 B CN 103301726B CN 201310237611 A CN201310237611 A CN 201310237611A CN 103301726 B CN103301726 B CN 103301726B
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- active particle
- flue gas
- desulfuring
- outer tube
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Abstract
The invention discloses a desulfurization and denitrification device based on an adjusting type active particle exciters. The desulfurization and denitrification device comprises an absorbing tower, wherein the absorbing tower is internally and sequentially separated into an absorption liquid pond area, a fume oxidization and injection area, a spray area and a demisting area from bottom to top; the fume oxidization and injection area is formed by a plurality of the adjusting type active particle exciters which are horizontally arranged in a tangent circle way along the wall of the absorbing tower; each adjusting type active particle exciter comprises an outer tube, an inner tube, a grounding electrode, a high-voltage electrode, an adjuster and the like; and each adjuster is used for adjusting the axial motion of each inner tube. The desulfurization and denitrification device disclosed by the invention is high in contaminant removal efficiency and low in system energy consumption and can be used for efficiently generating the active particles in a low-temperature environment, enhancing the effective utilization rate of the active particles, sufficiently oxidizing the contaminants and simultaneously desulfurizing and denitrifying the low-temperature fume absorbed by the contaminants. According to the desulfurization and denitrification device, when the fume passes through the absorbing tower, NO and SO2 which are contained in the fume can be simultaneously oxidized and absorbed, so that the purposes of simplifying equipment, reducing occupied area and integrating high-efficiency desulfurization and denitrification of the low-temperature fume are achieved.
Description
Technical field
The present invention relates to flue gas desulfurization and denitrification device, particularly relate to a kind of desulfuring and denitrifying apparatus based on adjustable type active particle exciter.
Background technology
Unprecedented soaring along with rapid economic development and total energy consumption, the NO of industrial smoke discharge
xand SO
2the atmosphere polluting problem caused is increasingly serious.Atmosphere pollution not only endangers animal and plant growth, damages the ozone layer, and can cause acid rain, greenhouse effects and photochemical fog.Therefore, carrying out desulphurization denitration to flue gas is control its effective means polluted.
Current thermal power plant often adopts flue gas substep desulphurization denitration technology, after general denitrification apparatus is arranged in reheater, flue gas through being drained to denitrification apparatus, at high temperature NO
xbe catalysed and reduced into N
2, then send back to the economizer of boiler back end ductwork.Flue gas, by after deduster, introduces absorption tower to the SO in flue gas by air-introduced machine and booster fan
2absorb, flue gas finally by chimney discharged to air.Due to the layout respectively on denitrification apparatus and absorption tower, occupy the space that plant area is limited, greatly increase construction cost.Meanwhile, flue gas substep desulphurization denitration not only makes flue long and tortuous, causes that smoke flow resistance is large, thermal losses is large, reduce the whole efficiency of thermal power plant.And make system architecture complicated, cause the operation of system, maintenance cost remains high.
Existing flue gas low-temperature simultaneous SO_2 and NO removal technology mainly contains ammonia process etc.Ammonia process uses ammoniacal liquor directly to rinse containing NO and SO
2flue gas, because the NO in flue gas is insoluble in water, cause this technology extremely low to the removal efficiency of NO.On the other hand, in order to ensure absorption efficiency, this technology needs to use a large amount of ammoniacal liquor to rinse flue gas, causes the problems such as circulating pump is exerted oneself greatly, flue gas resistance is large, causes the whole system energy consumption that removes to increase.In addition, the escaping of ammonia environmental pollution occurred in a large amount of circulated sprinkling process of ammoniacal liquor also can not be ignored.Above-mentioned all factors limit the popularization of the method.
Active particle simultaneous SO_2 and NO removal is one extremely potential low temperature simultaneous SO_2 and NO removal technology, is the research direction of current atmospheric field of environment pollution control.The highfield that the method utilizes high pressure to be formed excites oxygen and steam, make it to obtain energy to be excited, molecular cleavage reconfigures after becoming atom again, is transformed into the active particle that hydroxyl, ozone etc. have strong oxidizing property, the active particle inspired can promptly with NO and SO in flue gas
2there is oxidation reaction, make it to be oxidized to NO soluble in water
xand SO
3, then in conjunction with alkali lye, flue gas is rinsed, absorb the sour gas in flue gas, thus realize the object of type smoke pollutant removal.
But, the electronic beam method that current active particle simultaneous SO_2 and NO removal adopts, impulse electric corona plasma method equal excitation ionization to as if flue gas in oxygen and water vapour.But other gas contents are high in flue gas, oxygen concentration is low, and containing other particles, makes ionization object inaccurate and active particle easily discharges and causes this kind of method ionizing efficiency low, active particle output is unstable, thus can not be oxidized NO and SO in flue gas well
2.Meanwhile, owing to directly active particle being passed in flue, and there is no the flue gas zoneofoxidation of design specialized, pollutant is easy to react with metal flue by the sulfuric acid of generation after active particle oxidation, this kind of highly acid aerosol of nitric acid, accelerates boiler flue corrosion.In addition, if active particle directly sprays into the entrance on absorption tower, the life-span of active particle in absorption tower under high humidity environment shortens greatly, and the oxidation activity of loss of activity particle increases ionization energy consumption, reduces pollutant removing efficiency.
Summary of the invention
The object of the invention is to the shortcoming and defect overcoming above-mentioned prior art, there is provided a kind of improve pollutant removing efficiency, reduce system energy consume, based on the desulfuring and denitrifying apparatus of adjustable type active particle exciter, it can produce active particle at low ambient temperatures efficiently, improve the effective rate of utilization of active particle, fully oxidized pollutant the low-temperature flue gas simultaneous SO_2 and NO removal absorbed.
The present invention is achieved through the following technical solutions:
A kind of desulfuring and denitrifying apparatus based on adjustable type active particle exciter, comprise absorption tower, in absorption tower, be divided into absorption liquid pool district, flue gas oxidation inlet zone from bottom to top successively, spray district, except fog-zone, described flue gas oxidation inlet zone, is made up of multiple active particle exciter horizontally disposed along absorbing tower wall circle type;
Described active particle exciter comprises outer tube, is placed in interior pipe in outer tube with one heart, and the afterbody of outer tube is provided with electrode gas and cuts sth. askew air inlet pipe, spaced formation circular passage between the outer wall of interior pipe and the inwall of outer tube; The end sleeve of outer tube is equipped with shower nozzle; Be provided with embedded toroidal earth electrode at the internal perisporium of outer tube, be provided with sleeve type annular high voltage electrode at the periphery wall of interior pipe; Circular passage and electrode gas air inlet pipe of cutting sth. askew communicates; Sealing ring is provided with between the inner surface of described outer tube afterbody and the outer surface of interior pipe afterbody;
Region between described embedded toroidal earth electrode and sleeve type annular high voltage electrode is that active particle generates district, and the region between the end of described interior pipe and shower nozzle is flue gas oxidation reaction zone; Described desulfuring and denitrifying apparatus also comprises monitoring adjuster, and this monitoring adjuster comprises NO monitoring modular, adjustment module and for regulating the executing agency of interior pipe axially-movable; Described NO monitoring modular is divided into two, and one of them is placed in the nozzle of shower nozzle, and another is placed in the afterbody in circular passage, and described adjustment module is connected with these two NO monitoring modulars and executing agency respectively.
Described desulfuring and denitrifying apparatus also comprises flue gas shunting device, high voltage source, oxygen tank and steam generator, described oxygen tank and steam generator are connected by pipeline and electrode gas air inlet pipe of cutting sth. askew, described flue gas shunting device is connected by the gas approach of pipeline with interior pipe afterbody, and described high voltage source is electrically connected with sleeve type annular high voltage electrode with embedded toroidal earth electrode respectively by wire.
Described absorption liquid pool district also comprises an absorbing liquid replenishment system and an absorbing liquid discharges system; Described fog-zone of removing also comprises one for rinsing the rinse-system except fog-zone.
The spray angle of described active particle exciter lower 5 ° ~ 25 ° along horizontal alignment.
Described active particle exciter is connected with absorbing tower wall by flanged (FLGD) sleeve.
The atomizer that described spray district is distributed by multiple tier array is formed.
Under the present invention compared with prior art, at least tool has the following advantages and effect:
Pass through executing agency, interior pipe can be moved axially within the outer tube, due to the change of interior pipe axial location within the outer tube, make the corresponding increase in the region of flue gas oxidation reaction zone or reduce, flue gas oxidation reaction zone NO concentration is detected by NO monitoring modular, then by information feed back to being used for the adjustment module regulating interior pipe axial displacement, adjustment module carries out data analysis calculating, draw the inlet of optimal flue gas oxidation reaction zone space size and electrode gas, realize active particle exciter and can carry out in real time fine adjustment automatically according to the operating mode of variation, guarantee that active particle can be efficiently utilized after producing, make NO and SO in flue gas
2can be sufficiently oxidized.Because the regional space of flue gas oxidation reaction zone has adjustability, flue gas is made first after fully oxidized, to enter absorption tower again, to avoid in absorption tower high humidity environment on the impact in active particle life-span, ensure ionization produce active particle can fully with the pollutant generation oxidation reaction in flue gas, reduce energy loss, improve denitrification efficiency and economy.This structure, also avoids Yin Gaowen denitration and the energy loss that causes, greatly reduces the loss causing flue gas heat-transfer capability due to the pollutant in flue gas, ensures flue gas heat maximum using.
Multiple active particle exciter is horizontally disposed along absorbing tower wall circle type, form flue gas oxidation inlet zone, active particle exciter is spray angle under horizontal alignment 5 ° ~ 25 ° in absorption tower, form circle type spiral spray turbulent flow, flue gas is climbed at absorption tower inside spin, instead of flue gas conventional vertical in tower to climb flowing, prolong smoke is at absorption dwell time in the tower, and make flue gas and absorbing liquid in absorption tower, be in height chaos state, strengthen flue gas and absorbing liquid mixing mass transfer degree, while the utilization rate improving absorbing liquid and minimizing spray demand, reduce the overall energy consumption of desulfuring and denitrifying apparatus.
Adopt said mechanism, flue gas through absorption tower, NO and SO wherein
2can be simultaneously oxidized and absorb, reach thin device, reduce and take up an area.Achieve flue gas high-efficiency desulfurization denitrification integral under cryogenic conditions.
Accompanying drawing explanation
Fig. 1 is the structural representation of the desulfuring and denitrifying apparatus that the present invention is based on adjustable type active particle exciter.
Fig. 2 is the active particle exciter in Fig. 1, along the horizontally disposed schematic diagram of absorbing tower wall circle type.
Fig. 3 is Fig. 1 active particle exciter internal structure schematic diagram.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is more specifically described in detail.
Embodiment
As shown in Figure 1.Desulfuring and denitrifying apparatus based on adjustable type active particle exciter disclosed by the invention, comprise absorption tower 1, in absorption tower 1, be divided into absorption liquid pool district I, flue gas oxidation inlet zone II from bottom to top successively, spray district III, except fog-zone IV, described flue gas oxidation inlet zone II, is made up of multiple active particle exciter 4 horizontally disposed along absorption tower 1 tower wall circle type;
Described active particle exciter 4 comprises outer tube 5, is placed in interior pipe 6 in outer tube 5 with one heart, and the afterbody of outer tube 5 is provided with electrode gas and cuts sth. askew air inlet pipe 7, spaced formation circular passage between the outer wall of interior pipe 6 and the inwall of outer tube 5; The end sleeve of outer tube 5 is equipped with shower nozzle 8; Be provided with embedded toroidal earth electrode 9 at the internal perisporium of outer tube 5, be provided with sleeve type annular high voltage electrode 10 at the periphery wall of interior pipe 6; Circular passage and electrode gas air inlet pipe 7 of cutting sth. askew communicates; Between the inner surface of described outer tube 5 afterbody and the outer surface of interior pipe 6 afterbody, be provided with sealing ring 22;
Region between described embedded toroidal earth electrode 9 and sleeve type annular high voltage electrode 10 is that active particle generates district II-I, and the region between the end of described interior pipe 6 and shower nozzle 8 is flue gas oxidation reaction zone II-II;
Described desulfuring and denitrifying apparatus also comprises monitoring adjuster, and this monitoring adjuster comprises NO monitoring modular 11, adjustment module 12 and for regulating executing agency's (not shown) of interior pipe 6 axially-movable; Described NO monitoring modular 11 is divided into two, and one of them is placed in the nozzle of shower nozzle, and another is placed in the afterbody in circular passage, and described adjustment module 12 is connected with these two NO monitoring modulars and executing agency respectively.
Adjustment module 12 has data input and data learning functionality, can learn according to historical data, according to the NO concentration of nozzle flue gas under current working, regulates electrode throughput and flue gas oxidation reaction zone II-II size in real time.
Shower nozzle 8 can select different cone angles according to operating mode, and suitable cone angle ensures flue gas injection rigidity on the one hand, prevents absorbing liquid from pouring in down a chimney into flue gas oxidation reaction zone II-II on the other hand.
Described desulfuring and denitrifying apparatus also comprises flue gas shunting device 17, high voltage source 14, oxygen tank 15 and steam generator 16, described oxygen tank 15 and steam generator 16 are connected by pipeline and electrode gas air inlet pipe 7 of cutting sth. askew, described flue gas shunting device 17 is connected by the gas approach of pipeline with interior pipe 6 afterbody, and described high voltage source 14 is electrically connected with sleeve type annular high voltage electrode with embedded toroidal earth electrode respectively by wire.
Described absorption liquid pool district I also comprises an absorbing liquid replenishment system 2 and an absorbing liquid discharges system 3; The described fog-zone IV that removes also comprises one for rinsing the rinse-system 20 except fog-zone IV.
The spray angle of described active particle exciter 4 lower 5 ° ~ 25 ° along horizontal alignment.
Described active particle exciter 4 is connected with absorption tower 1 tower wall by flanged (FLGD) sleeve 13.
The atomizer 19 that described spray district III is distributed by multiple tier array is formed.
This patent operation principle process:
Steam in oxygen in oxygen tank 15 and steam generator 16, the electrode gas mixed in specific proportions by electrode gas cut sth. askew air inlet pipe 7 enter active particle generate district II-I, the highfield that electrode gas is subject to producing between embedded toroidal earth electrode 9 and sleeve type annular high voltage electrode 10 herein excites, produce the active particle that hydroxyl, ozone, hydrogen peroxide etc. have strong oxidizing property, active particle high-speed rotational is to flue gas oxidation reaction zone II-II, the flue gas passed into interior pipe 6 mixes, and active particle is by NO and SO in flue gas
2oxidation, generates NO soluble in water
2and SO
3.
NO monitoring modular 11 is by the NO concentration of monitoring flue gas oxidation reaction zone II-II, analyze through adjustment module 12, computing manage axial displacement within the outer tube in realizing automatically regulating according to different operating mode, the size in II-II space, flue gas oxidation reaction zone is changed, to ensure that active particle can at flue gas oxidation reaction zone II-II by fully oxidized for the pollutant in flue gas.
In addition, due to the adjustability of the size in II-II space, flue gas oxidation reaction zone, active particle just can give birth to oxidation reaction with the pollutant hybrid concurrency in flue gas at once once generate in the region of relatively dry, farthest make use of electric field to excite and the active particle generated, reducing active particle widely can not oxidize contaminants and the energy dissipation that causes at self-inactivation, improves the oxidation efficiency of specific energy consumption.
Flue gas after active particle exciter 4 is oxidized is sprayed in absorption tower 1 by nozzle 8, flue gas sprays in absorption tower 1 with special angle and organizational form, circle type spiral spray turbulent flow is formed in absorption tower, flue gas being climbed at absorption tower inside spin, being discharged by the exhanst gas outlet 21 on absorption tower 1 after through spraying district III, except fog-zone IV.Flue gas climbs at absorption tower inside spin, instead of flue gas conventional vertical in tower to climb flowing, prolong smoke is at absorption dwell time in the tower, and make flue gas and absorbing liquid in absorption tower, be in height chaos state, strengthen flue gas and absorbing liquid mixing mass transfer degree, and while the utilization rate improving absorbing liquid and minimizing spray demand, reduce the overall energy consumption of desulfuring and denitrifying apparatus.
As mentioned above, just the present invention can be realized preferably.
Embodiments of the present invention are not restricted to the described embodiments; other are any do not deviate from Spirit Essence of the present invention and principle under do change, modification, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (6)
1. the desulfuring and denitrifying apparatus based on adjustable type active particle exciter, comprise absorption tower, in absorption tower, be divided into absorption liquid pool district, flue gas oxidation inlet zone from bottom to top successively, spray district, except fog-zone, it is characterized in that: described flue gas oxidation inlet zone, is made up of multiple active particle exciter horizontally disposed along absorbing tower wall circle type;
Described active particle exciter comprises outer tube, is placed in interior pipe in outer tube with one heart, and the afterbody of outer tube is provided with electrode gas and cuts sth. askew air inlet pipe, spaced formation circular passage between the outer wall of interior pipe and the inwall of outer tube; The end sleeve of outer tube is equipped with shower nozzle; Be provided with embedded toroidal earth electrode at the internal perisporium of outer tube, be provided with sleeve type annular high voltage electrode at the periphery wall of interior pipe; Circular passage and electrode gas air inlet pipe of cutting sth. askew communicates; Sealing ring is provided with between the inner surface of described outer tube afterbody and the outer surface of interior pipe afterbody;
Region between described embedded toroidal earth electrode and sleeve type annular high voltage electrode is that active particle generates district, and the region between the end of described interior pipe and shower nozzle is flue gas oxidation reaction zone;
Described desulfuring and denitrifying apparatus also comprises monitoring adjuster, and this monitoring adjuster comprises NO monitoring modular, adjustment module and for regulating the executing agency of interior pipe axially-movable;
Described NO monitoring modular is divided into two, and one of them is placed in the nozzle of shower nozzle, and another is placed in the afterbody in circular passage, and described adjustment module is connected with these two NO monitoring modulars and executing agency respectively.
2. the desulfuring and denitrifying apparatus based on adjustable type active particle exciter according to claim 1, it is characterized in that: described desulfuring and denitrifying apparatus also comprises flue gas shunting device, high voltage source, oxygen tank and steam generator, described oxygen tank and steam generator are connected by pipeline and electrode gas air inlet pipe of cutting sth. askew, described flue gas shunting device is connected by the gas approach of pipeline with interior pipe afterbody, and described high voltage source is electrically connected with sleeve type annular high voltage electrode with embedded toroidal earth electrode respectively by wire.
3. the desulfuring and denitrifying apparatus based on adjustable type active particle exciter according to claim 1 and 2, is characterized in that: described absorption liquid pool district also comprises an absorbing liquid replenishment system and an absorbing liquid discharges system; Described fog-zone of removing also comprises one for rinsing the rinse-system except fog-zone.
4. the desulfuring and denitrifying apparatus based on adjustable type active particle exciter according to claim 1 and 2, is characterized in that: the spray angle of described active particle exciter lower 5 ° ~ 25 ° along horizontal alignment.
5. the desulfuring and denitrifying apparatus based on adjustable type active particle exciter according to claim 1 and 2, is characterized in that: described active particle exciter is connected with absorbing tower wall by flanged (FLGD) sleeve.
6. the desulfuring and denitrifying apparatus based on adjustable type active particle exciter according to claim 1 and 2, is characterized in that: the atomizer that described spray district is distributed by multiple tier array is formed.
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| CN201310237611.3A CN103301726B (en) | 2013-06-14 | 2013-06-14 | Desulfurization and denitrification device based on adjusting type active particle exciters |
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| CN201310237611.3A CN103301726B (en) | 2013-06-14 | 2013-06-14 | Desulfurization and denitrification device based on adjusting type active particle exciters |
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| CN103301726B true CN103301726B (en) | 2015-04-22 |
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| CN107583430A (en) * | 2017-10-25 | 2018-01-16 | 南京爱碧洲环保科技有限公司 | One kind sintering denitrating flue gas processing unit and method |
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|---|---|---|---|---|
| WO2007079507A1 (en) * | 2006-01-11 | 2007-07-19 | Juanito Horn | Method for the oxidation of oxidizable exhaust gases with the aid of scrubbing liquid, and corresponding device |
| CN202606025U (en) * | 2012-05-16 | 2012-12-19 | 浙江菲达环保科技股份有限公司 | Smoke desulfurizer |
| CN202683007U (en) * | 2012-07-02 | 2013-01-23 | 浙江大学 | Integrated wet-type desulfurizing tower with three-phase power supply wet-type electric precipitation |
| CN203329594U (en) * | 2013-06-14 | 2013-12-11 | 华南理工大学 | Desulfurization and denitrification device based on adjustable active particle exciters |
-
2013
- 2013-06-14 CN CN201310237611.3A patent/CN103301726B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007079507A1 (en) * | 2006-01-11 | 2007-07-19 | Juanito Horn | Method for the oxidation of oxidizable exhaust gases with the aid of scrubbing liquid, and corresponding device |
| CN202606025U (en) * | 2012-05-16 | 2012-12-19 | 浙江菲达环保科技股份有限公司 | Smoke desulfurizer |
| CN202683007U (en) * | 2012-07-02 | 2013-01-23 | 浙江大学 | Integrated wet-type desulfurizing tower with three-phase power supply wet-type electric precipitation |
| CN203329594U (en) * | 2013-06-14 | 2013-12-11 | 华南理工大学 | Desulfurization and denitrification device based on adjustable active particle exciters |
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