CN103301726A - 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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- CN103301726A CN103301726A CN2013102376113A CN201310237611A CN103301726A CN 103301726 A CN103301726 A CN 103301726A CN 2013102376113 A CN2013102376113 A CN 2013102376113A CN 201310237611 A CN201310237611 A CN 201310237611A CN 103301726 A CN103301726 A CN 103301726A
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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 the flue gas desulfurization and denitrification device, relate in particular 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 discharging
XAnd SO
2The atmosphere polluting problem that causes 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, flue gas is carried out the effective means that desulphurization denitration is its pollution of control.
At present thermal power plant often adopts flue gas substep desulphurization denitration technology, after general denitrification apparatus is arranged in reheater, flue gas through drainage to denitrification apparatus, NO at high temperature
XBe catalysed and reduced into N
2, send back to again the economizer of boiler back end ductwork.Flue gas is introduced the absorption tower to the SO in the flue gas by behind the deduster by air-introduced machine and booster fan
2Absorb, flue gas finally by chimney discharged to atmosphere.Because the respectively layout on denitrification apparatus and absorption tower has taken the limited space of plant area, greatly increases construction cost.Meanwhile, flue gas substep desulphurization denitration not only makes flue long and tortuous, causes that the flow of flue gas resistance is large, thermal losses is large, reduces the whole efficiency of thermal power plant.And make system architecture complicated, cause the operation of system, maintenance cost to remain high.
Existing flue gas low-temperature simultaneously desulphurization denitration technology mainly contains ammonia process etc.Ammonia process uses the direct flushing of ammoniacal liquor to contain NO and SO
2Flue gas since flue gas in NO be insoluble in water, cause this technology extremely low to the removal efficient of NO.On the other hand, in order to guarantee absorption efficiency, this Technology Need uses a large amount of ammoniacal liquor that flue gas is washed, and 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 that occurs in a large amount of circulated sprinkling processes of ammoniacal liquor also can not be ignored.Above-mentioned all effects limit the popularization of the method.
Active particle simultaneously desulphurization denitration is a kind of low temperature while desulphurization denitration technology that has development potentiality, is the research direction that current air environmental pollution is administered the field.The highfield that the method utilizes high pressure to form excites oxygen and steam, making it to obtain energy is excited, molecule reconfigures after being cracked into atom again, is transformed into the active particle that hydroxyl, ozone etc. have strong oxidizing property, the active particle that inspires can be promptly with flue gas in NO and SO
2Oxidation reaction occurs, and makes it to be oxidized to NO soluble in water
XAnd SO
3, in conjunction with alkali lye flue gas is washed again, absorb the sour gas in the flue gas, thereby realize the purpose that flue gas pollutant removes.
But, the simultaneously electronic beam method that adopts of desulphurization denitration, the ionization of impulse electric corona plasma method equal excitation of current active particle to as if flue gas in oxygen and water vapour.Yet other gas contents are high in the flue gas, oxygen concentration is low, and contains other particles, so that the ionization object is inaccurate and active particle easily discharges and cause this kind method ionizing efficiency low, active particle output is unstable, thus NO and SO well in the oxidation flue gas
2Meanwhile, owing to directly active particle is passed in the flue, and not having a flue gas zoneofoxidation of design specialized, sulfuric acid, this class highly acid aerosol of nitric acid that pollutant generates after by the active particle oxidation are easy to react with the metal flue, accelerate boiler flue corrosion.In addition, if active particle directly sprays into the entrance on absorption tower, active particle life-span under the high humidity environment in the absorption tower shortens greatly, and the oxidation activity of loss of activity particle has increased the ionization energy consumption, has reduced pollutant removing efficient.
Summary of the invention
The object of the invention is to overcome the shortcoming and defect of above-mentioned prior art, provide a kind of and improve pollutant removing efficient, reduce system's energy resource consumption, desulfuring and denitrifying apparatus based on adjustable type active particle exciter, it can produce efficiently active particle, improve the effective rate of utilization of active particle under low temperature environment, fully oxidize contaminants and with the low-temperature flue gas of its absorption desulphurization denitration simultaneously.
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 the absorption tower, in the absorption tower, be divided into successively absorption liquid pool district, flue gas oxidation inlet zone, spray district from bottom to top, remove the fog-zone, described flue gas oxidation inlet zone is made of along the horizontally disposed active particle exciter of absorbing tower wall circle type a plurality of;
Described active particle exciter comprises outer tube, places inner tube in the outer tube, the afterbody of outer tube to be provided with the electrode gas air inlet pipe of cutting sth. askew, formation circular passage in space between the outer wall of inner tube and the inwall of outer tube with one heart; The end of outer tube is set with shower nozzle; Internal perisporium at outer tube is provided with the embedded toroidal earth electrode, is provided with sleeve type annular high-field electrode at the periphery wall of inner tube; Circular passage and the electrode gas air inlet pipe of cutting sth. askew communicates; Be provided with sealing ring between the outer surface of the inner surface of described outer tube afterbody and inner tube afterbody;
Zone between described embedded toroidal earth electrode and the sleeve type annular high-field electrode is that active particle generates the district, and the end of described inner tube and the zone between the shower nozzle are the flue gas oxidation reaction zone; Described desulfuring and denitrifying apparatus also comprises the monitoring adjuster, and this monitoring adjuster comprises NO monitoring modular, adjustment module and the executing agency that is used for regulating the inner tube axially-movable; Described NO monitoring modular is divided into two, and one of them places the nozzle of shower nozzle, and another places the afterbody in the 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 is connected pipeline and the electrode gas air inlet pipe of cutting sth. askew and is connected with steam generator, described flue gas shunting device is connected by the gas approach of pipeline with the inner tube afterbody, and described high voltage source is electrically connected with sleeve type annular high-field electrode with the embedded toroidal earth electrode respectively by wire.
Described absorption liquid pool district also comprises an absorption liquid replenishment system and an absorption liquid discharge system; The described fog-zone of removing comprises that also one is used for flushing except the rinse-system of fog-zone.
Lower 5 °～25 ° along horizontal alignment of the spray angles of described active particle exciter.
Described active particle exciter is connected with the absorbing tower wall by flanged (FLGD) sleeve.
Described spray district is made of the atomizer that multiple tier array distributes.
Under the present invention compared with prior art, have at least following advantage and effect:
Pass through executing agency; inner tube can be moved axially within the outer tube; because the within the outer tube variation of axial location of inner tube; make the regional corresponding increase of flue gas oxidation reaction zone or dwindle; detect flue gas oxidation reaction zone NO concentration by the NO monitoring modular; then information is fed back to for the adjustment module of regulating inner tube axial displacement; adjustment module is carried out data analysis and is calculated; draw the inlet of optimal flue gas oxidation reaction zone space size and electrode gas; realize that the active particle exciter can carry out in real time automatically fine adjustment according to the operating mode of change; guarantee efficiently to be utilized after active particle produces, make NO and SO in the flue gas
2Can be by fully oxidation.Because the regional space of flue gas oxidation reaction zone has adjustability, make flue gas enter again the absorption tower through after the abundant oxidation first, avoid in the absorption tower high humidity environment on the impact in active particle life-span, guarantee active particle that ionization produces can be fully with flue gas in pollutant generation oxidation reaction, reduce energy loss, improve denitrification efficiency and economy.This structure is also avoided the Yin Gaowen denitration and the energy loss that causes, greatly reduces the loss that causes the flue gas heat-transfer capability owing to the pollutant in the flue gas, guarantees the flue gas heat maximum using.
A plurality of active particle exciters are horizontally disposed along absorbing tower wall circle type, consist of flue gas oxidation inlet zone, the active particle exciter in the absorption tower spray angle along under the horizontal alignment 5 °～25 °, form circle type spiral spray turbulent flow, flue gas is climbed at the absorption tower inside spin, having substituted flue gas routine in tower vertically climbs mobile, prolong smoke is absorbing dwell time in the tower, and make flue gas and absorption liquid in the absorption tower, be in the height chaos state, strengthen flue gas and absorption liquid mixing mass transfer degree, in the utilization rate that improves absorption liquid and when reducing the spray demand, reduced the whole energy consumption of desulfuring and denitrifying apparatus.
Adopt said mechanism, flue gas through the absorption tower time, NO wherein and SO
2Simultaneously oxidized and absorption reaches thin device, reduces and take up an area.Realized flue gas high-efficiency desulfurization denitrification integral under the cryogenic conditions.
Description of drawings
Fig. 1 is the structural representation that the present invention is based on the desulfuring and denitrifying apparatus of adjustable type active particle exciter.
Fig. 2 is the active particle exciter among 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.
The specific embodiment
Below in conjunction with specific embodiment the present invention is done further concrete detailed description the 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 successively absorption liquid pool district I, flue gas oxidation inlet zone II, spray district III from bottom to top, remove fog-zone IV, described flue gas oxidation inlet zone II, the horizontally disposed active particle exciter 4 of 1 tower wall circle type consists of along the absorption tower by a plurality of;
Described active particle exciter 4 comprises outer tube 5, places inner tube 6 in the outer tube 5, the afterbody of outer tube 5 to be provided with the electrode gas air inlet pipe 7 of cutting sth. askew, formation circular passage in space between the inwall of the outer wall of inner tube 6 and outer tube 5 with one heart; The end of outer tube 5 is set with shower nozzle 8; Internal perisporium at outer tube 5 is provided with embedded toroidal earth electrode 9, is provided with sleeve type annular high-field electrode 10 at the periphery wall of inner tube 6; Circular passage and the electrode gas air inlet pipe 7 of cutting sth. askew communicates; Between the outer surface of the inner surface of described outer tube 5 afterbodys and inner tube 6 afterbodys, be provided with sealing ring 22;
Zone between described embedded toroidal earth electrode 9 and the sleeve type annular high-field electrode 10 is that active particle generates district II-I, and the zone between the end of described inner tube 6 and the shower nozzle 8 is flue gas oxidation reaction zone II-II;
Described desulfuring and denitrifying apparatus also comprises the monitoring adjuster, and this monitoring adjuster comprises NO monitoring modular 11, adjustment module 12 and the executing agency's (not shown) that is used for regulating inner tube 6 axially-movables; Described NO monitoring modular 11 is divided into two, and one of them places the nozzle of shower nozzle, and another places the afterbody in the 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 the current working, regulates in real time electrode throughput and flue gas oxidation reaction zone II-II size.
Shower nozzle 8 can be selected different cone angles according to operating mode, and suitable cone angle guarantees flue gas injection rigidity on the one hand, prevents that on the other hand absorption liquid from pouring in down a chimney into flue gas oxidation reaction zone II-II.
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 is connected with steam generator and is connected by pipeline and the 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 inner tube 6 afterbodys, and described high voltage source 14 is electrically connected with sleeve type annular high-field electrode with the embedded toroidal earth electrode respectively by wire.
Described absorption liquid pool district I also comprises an absorption liquid replenishment system 2 and an absorption liquid discharge system 3; The described fog-zone IV of removing comprises that also one is used for flushing except the rinse-system 20 of fog-zone IV.
Lower 5 °～25 ° along horizontal alignment of the spray angles of described active particle exciter 4.
Described active particle exciter 4 is connected with absorption tower 1 tower wall by flanged (FLGD) sleeve 13.
Described spray district III is made of the atomizer 19 that multiple tier array distributes.
This patent operation principle process:
Steam in oxygen in the oxygen tank 15 and the steam generator 16, the electrode gas that mixes is in specific proportions entered active particle and is generated district II-I by the electrode gas air inlet pipe 7 of cutting sth. askew, the highfield that electrode gas is subject to producing between embedded toroidal earth electrode 9 and the sleeve type annular high-field electrode 10 herein excites, produce the active particle that hydroxyl, ozone, hydrogen peroxide etc. have strong oxidizing property, the active particle high-speed rotational is to flue gas oxidation reaction zone II-II, the flue gas that passes into inner tube 6 mixes, and active particle is with the NO in the flue gas and SO
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, realize automatically regulating within the outer tube axial displacement of inner tube through adjustment module 12 analyses, computing and according to different operating modes, the size in flue gas oxidation reaction zone II-II space is changed, to guarantee that active particle can be at flue gas oxidation reaction zone II-II with the abundant oxidation of the pollutant in the flue gas.
In addition, because the adjustability of the size in flue gas oxidation reaction zone II-II space, active particle in case just generate can be in the zone of relatively dry at once with flue gas in pollutant hybrid concurrency life oxidation reaction, the active particle that has farthest utilized electric field to excite and generated, reducing widely active particle can not oxidize contaminants and the energy dissipation that causes at self-inactivation, has improved the oxidation efficiency of specific energy consumption.
Pass through nozzle 81 interior ejection on the absorption tower through the flue gas after 4 oxidations of active particle exciter, flue gas sprays in the absorption tower 1 with special angle and organizational form, in the absorption tower, form circle type spiral spray turbulent flow, flue gas is climbed at the absorption tower inside spin, after spraying district III, removing fog-zone IV, discharge by the exhanst gas outlet 21 on absorption tower 1.Flue gas climbs at the absorption tower inside spin, having substituted flue gas routine in tower vertically climbs mobile, prolong smoke is absorbing dwell time in the tower, and make flue gas and absorption liquid in the absorption tower, be in the height chaos state, strengthen flue gas and absorption liquid mixing mass transfer degree, and in the utilization rate that improves absorption liquid and when reducing the spray demand, reduced the whole energy consumption of desulfuring and denitrifying apparatus.
As mentioned above, just can realize preferably the present invention.
Embodiments of the present invention are not restricted to the described embodiments; other are any not to deviate from change, the modification done under Spirit Essence of the present invention and the principle, substitute, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (6)
1. desulfuring and denitrifying apparatus based on adjustable type active particle exciter, comprise the absorption tower, in the absorption tower, be divided into successively absorption liquid pool district, flue gas oxidation inlet zone, spray district from bottom to top, remove the fog-zone, it is characterized in that: described flue gas oxidation inlet zone is made of along the horizontally disposed active particle exciter of absorbing tower wall circle type a plurality of;
Described active particle exciter comprises outer tube, places inner tube in the outer tube, the afterbody of outer tube to be provided with the electrode gas air inlet pipe of cutting sth. askew, formation circular passage in space between the outer wall of inner tube and the inwall of outer tube with one heart; The end of outer tube is set with shower nozzle; Internal perisporium at outer tube is provided with the embedded toroidal earth electrode, is provided with sleeve type annular high-field electrode at the periphery wall of inner tube; Circular passage and the electrode gas air inlet pipe of cutting sth. askew communicates; Be provided with sealing ring between the outer surface of the inner surface of described outer tube afterbody and inner tube afterbody;
Zone between described embedded toroidal earth electrode and the sleeve type annular high-field electrode is that active particle generates the district, and the end of described inner tube and the zone between the shower nozzle are the flue gas oxidation reaction zone;
Described desulfuring and denitrifying apparatus also comprises the monitoring adjuster, and this monitoring adjuster comprises NO monitoring modular, adjustment module and the executing agency that is used for regulating the inner tube axially-movable;
Described NO monitoring modular is divided into two, and one of them places the nozzle of shower nozzle, and another places the afterbody in the 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 is connected pipeline and the electrode gas air inlet pipe of cutting sth. askew and is connected with steam generator, described flue gas shunting device is connected by the gas approach of pipeline with the inner tube afterbody, and described high voltage source is electrically connected with sleeve type annular high-field electrode with the 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 comprises that also an absorption liquid replenishment system and an absorption liquid discharge system; The described fog-zone of removing comprises that also one is used for flushing except the rinse-system of 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: lower 5 °～25 ° along horizontal alignment of the spray angles of described active particle exciter.
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 the 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: described spray district is made of the atomizer that multiple tier array distributes.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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2013
- 2013-06-14 CN CN201310237611.3A patent/CN103301726B/en active Active
Patent Citations (4)
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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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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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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