CN107837661A - The apparatus and method that seaweed bio charcoal combination low-temperature plasma synergistic removes sulphur nitre mercury - Google Patents
The apparatus and method that seaweed bio charcoal combination low-temperature plasma synergistic removes sulphur nitre mercury Download PDFInfo
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- CN107837661A CN107837661A CN201711005567.8A CN201711005567A CN107837661A CN 107837661 A CN107837661 A CN 107837661A CN 201711005567 A CN201711005567 A CN 201711005567A CN 107837661 A CN107837661 A CN 107837661A
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- seaweed bio
- bio charcoal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/75—Multi-step processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/32—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/60—Simultaneously removing sulfur oxides and nitrogen oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/64—Heavy metals or compounds thereof, e.g. mercury
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
Abstract
The present invention relates to a kind of apparatus and method of seaweed bio charcoal combination low-temperature plasma synergistic removing sulphur nitre mercury.The junction of the inlet channel of the device, afterbody passage and housing is provided with cowling panel；Some processing units are provided with housing；Each processing unit includes：Two plate type electrodes being oppositely arranged, and between be provided with some honeycomb seaweed bio charcoals, wherein, the inner side of a battery lead plate is provided with medium；Insulating barrier is equipped with the outside of two plate type electrodes.Using the seaweed bio charcoal of marine alga Pintsch process charing generation under anaerobic or hypoxia condition as adsorbent, high-efficiency desulfurization denitration demercuration is realized in plasma body cooperative catalyst system and catalyzing.Under oxygen atmosphere, plasma discharge produces a variety of active species with oxidisability, such as O3, O etc., aoxidize NO, Hg in flue gas0.Seaweed bio charcoal and SO2Chemisorbed is produced, while adsorbs NO, Hg0Oxidation product, reach removing pollutant purpose.
Description
Technical field
The invention belongs to environmental technology field, more particularly to a kind of seaweed bio charcoal combination low-temperature plasma synergistic to remove
The apparatus and method of sulphur nitre mercury.
Background technology
China is coal production state and consumption of coal state maximum in the world.Coal is the main primary energy of China, is
Key pillars of the national economy, but undeniably, coal is caused to environment during utilization and had a strong impact on,
Cause the concern of compatriots and surrounding countries.Therefore, seek effective countermeasure, mitigate coal pollution, strengthen environmental protection, gesture is must
OK.
Caused gaseous contaminant mainly has sulfur dioxide, nitrogen oxides and heavy metal (mercury) etc. to coal in combustion.
Although the content of mercury is very low in coal, based on the huge coal consumption amount present situation in China, its contribution for global mercury emissions is not
It can neglect.Therefore, seek a kind of method of produced pollutant in efficient removal coal-fired process, solve China in this regard
Environmental issue is extremely urgent.
Attention, the administering method use the efficient Collaborative Control technology of the multiple pollutants such as sulfureous in flue gas nitre mercury in recent years
Less processing unit can effectively reach expected treatment effect, be the key that low cost solves China's atmosphere polluting problem.
Wherein, it is a kind of very feasible method to remove multiple pollutant technology simultaneously using adsorption method.It is but simple using absorption
Agent is very low to the removal efficiency of nitrogen oxides and mercury, is unable to reach the emission request of national regulation.
The content of the invention
A kind of present invention deficiency existing for absorption method simultaneous SO_2 and NO removal demercuration technology, there is provided seaweed bio charcoal knot
The apparatus and method for closing low-temperature plasma synergistic removing sulphur nitre mercury.
A kind of device of seaweed bio charcoal combination low-temperature plasma synergistic removing sulphur nitre mercury, including：Inlet channel, rectification
Plate, some processing units, afterbody passage, high-voltage ac power, earthing or grounding means, ground wire, high voltage input line and housing；Air inlet
Passage, housing and afterbody passage are sequentially connected, wherein, inlet channel and housing junction, housing and afterbody passage junction are equal
It is provided with cowling panel；Some processing units are provided with housing；The output end of high-voltage ac power by high voltage input line with
One of plate type electrode connection of every grade of processing unit, another plate type electrode pass through earthing or grounding means and ground connection.
Each processing unit includes：Two plate type electrodes, medium, honeycomb seaweed bio charcoal, insulating barrier；Two plate type electrodes
Be oppositely arranged, and between be provided with some honeycomb seaweed bio charcoals, wherein, the inner side of a battery lead plate is provided with medium；Two plates
Insulating barrier is equipped with the outside of formula electrode；
It is fixed between some processing units by way of series, parallel or for series combination parallel connection among housing.
The pole plate spacing of two plate type electrode normal directions is 20~100mm.
The height of the honeycomb seaweed bio charcoal is identical with pole plate spacing, and width is identical with plate width, in flue gas flow direction
On can holding multiple pieces.
The high-voltage ac power output voltage is 8kV~30kV.
The material of the medium is aluminium oxide ceramics or quartz plate, and low temperature plasma is produced using dielectric barrier discharge device
It is raw.
When equipment is run, two devices are placed parallel, alternate run, waste receipts are carried out to take out honeycomb seaweed bio charcoal
Collection and regeneration, as shown in Figure 2.
Utilize seaweed bio charcoal combination low-temperature plasma synergistic of the present invention removing sulphur nitre mercury device removing sulphur nitre
The method of mercury is：
(1) SO is contained2、NOxDevice of the present invention is entered by inlet channel with the flue gas of Elemental Mercury, rectified plate rectification,
Into the processing unit of seaweed bio charcoal combination low-temperature plasma synergistic removing sulphur nitre mercury.Low temperature plasma is hindered using medium
Keep off electric discharge device to produce, plasma discharge produces high energy electron and a variety of active species with oxidisability, O3Free radical, O
Free radical, OH free radicals.
(2) gas enter plasma discharge after, first with the high energy electron in plasma, O3Free radical, O are certainly
By base, OH free radicals, N free radical isoreactivity particle reactions, SO2、NOxSO is partially oxidized into Elemental Mercury3、NO2And mercury oxide
Deng material.Meanwhile high energy electron, O in plasma3Free radical, O free radicals, OH free radicals, N free radical isoreactivity particles
Activation, when flue gas passes through honeycomb seaweed bio charcoal, the SO of gas phase can be produced to honeycomb seaweed bio charcoal2、SO3、NOx, it is single
Matter mercury, mercury oxide are attracted to honeycomb seaweed bio charcoal under the collective effect of low temperature plasma and honeycomb seaweed bio charcoal
Surface, the pollutant in flue gas are removed.Flue gas obtains multistep treatment through peroxidating-absorption, pollutant repeatedly, can reach
Very high purification efficiency.Gas can reach the standard of minimum discharge after multistep treatment, into back-end ductwork, discharge.
It should be noted that：
1) present apparatus is integration while removes the device of multiple pollutant.Given birth to using low temperature plasma and honeycomb marine alga
Thing charcoal produces synergy, utilizes the pollutant in oxidation-adsorption process removing flue gas.High energy electron and the effect of free radical particle
In honeycomb seaweed bio carbon surface, seaweed bio carbon surface activity can be improved, strengthens the adsorptivity of seaweed bio charcoal.
2) in the method, low temperature plasma and honeycomb seaweed bio charcoal are produced and acted synergistically, low temperature etc. in subtractive process
Gas ions and honeycomb seaweed bio charcoal are indispensable.There is no a low temperature plasma, the removal efficiency of honeycomb seaweed bio charcoal and make
It will be greatly reduced with the life-span.There is no honeycomb seaweed bio charcoal, low temperature plasma can only aoxidize the pollutant in flue gas, Wu Fayou
Effect removing pollutant.
3) charcoal has larger specific surface area and microcellular structure, and surface functional group enriches, to being produced in coal-fired process
Heavy metal and pollutant have efficient suction-operated.On the other hand, alkalescence is presented in charcoal, and cracking temperature is higher, pH
It is higher.Charcoal present alkalescence be because it contain a certain amount of ash content, mineral element such as Na, K, Mg, Ca etc. with oxide or
The form of carbonate is present in ash content.Present invention Pintsch process charing generation marine alga under anaerobic or hypoxia condition using marine alga
Charcoal, the marine alga refer to one kind or any number of mixture in the common algae in China's Coastal Areas, and raw material is easy to get, preparation is grasped
Make it is relatively easy, so the present invention has prominent economic advantages.
4) running temperature needed for this method is low, and device can be used in after desulfurizing tower, carries out the further net of flue gas
Change, reach minimum discharge requirement.
5) a variety of active species with oxidisability caused by discharge process be make use of：O3, O etc., pollutant is produced high
The oxidation of effect.
Compared with prior art, the present invention has advantages below：
1) present invention incorporates the speciality of seaweed bio charcoal, cooperating with low-temperature plasma discharges under oxygen atmosphere, to nitrogen
Oxide and mercury have higher removal efficiency；
2) cooperation-removal multiple pollutant under low temperature can be achieved, beneficial to the consumption for reducing seaweed bio charcoal, reduce operation
Cost；
3) plasma discharge can effectively improve adsorption capacity of the adsorbent to pollutant, reduce adsorbent amount, carry
High adsorbent run time, reduce operating cost；
4) there is stronger adaptability to severe operating condition；
5) seaweed bio charcoal preparation technology is simple, cost is relatively low, pore structure enriches, and can be widely applied to a variety of in flue gas
The cooperation-removal of pollutant.
Brief description of the drawings
Fig. 1 is the device that seaweed bio charcoal combination low-temperature plasma synergistic removes sulphur nitre mercury：
Fig. 2 is that equipment runs connected mode schematic diagram.
Description of reference numerals：
1- inlet channels, 2- cowling panels, 3- plate type electrodes, 4- media, 5- honeycomb seaweed bios charcoal, 6- insulating barriers, 7- tails
Portion's passage, 8- high-voltage ac powers, 9- earthing or grounding means, 10- ground wires, 11- high voltages input line, 12- housings.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment the present invention is further illustrated, but protection scope of the present invention is simultaneously
Not limited to this.
As shown in figure 1, the device of seaweed bio charcoal combination low-temperature plasma synergistic removing sulphur nitre mercury, including：Air inlet is led to
Road 1, cowling panel 2, plate type electrode 3, medium 4, honeycomb seaweed bio charcoal 5, insulating barrier 6, high-voltage ac power 8, high voltage input
Line 11, ground wire 10, earthing or grounding means 9, afterbody passage 7, housing 12；The inlet channel 1, housing 12 and afterbody passage 7 are successively
Connection, wherein, inlet channel 1 and the junction of housing 12, housing 12 and the junction of afterbody passage 7 are provided with cowling panel 2；From entering
Mouth arrives export direction, 2 layers of processing unit is provided with housing 12, every layer contains 4 processing units arranged side by side；High-voltage ac power
8 output end is connected by high voltage input line 11 with one of plate type electrode of every grade of processing unit, another board-like electricity
Pole passes through earthing or grounding means 9 and the ground connection of ground wire 10.
Each processing unit includes：Two plate type electrodes 3, medium 4, honeycomb seaweed bio charcoal 5, insulating barrier 6；Two board-like
Electrode is oppositely arranged, and between be provided with some honeycomb seaweed bio charcoals 5, wherein, the inner side of a battery lead plate is provided with medium 4；
Insulating barrier 6 is equipped with the outside of two plate type electrodes；
The area of two plate type electrodes 3 is 200mm × 300mm, and the spacing of normal direction is 20mm.
Honeycomb seaweed bio charcoal 5 is placed between two plate type electrodes, height, width, thickness be respectively 20mm, 200mm,
20mm, 5 layers are spaced at equal intervals between plate electrode.
Low temperature plasma is produced using the discharge-blocking device of medium 4, and dielectric material is aluminium oxide ceramics.
The output voltage of high-voltage ac power 8 is 8kV~30kV, frequency 50Hz.
As shown in Fig. 2 when equipment is run, two devices, alternate run, to take out honeycomb seaweed bio charcoal are placed parallel
Carry out waste collection and regeneration.
3%O will be contained2、400ppm NO、300ppm SO2、70μg/m3The flue gas of Elemental Mercury leads to from the air inlet of reaction unit
Road 1 is passed through, flow 10L/min.The output voltage of high-voltage ac power 8 is set as 14kV.Device exit is using flue gas point
Analyzer and mercury vapourmeter measure reactant concentration, calculate removal efficiency is SO290%th, NO 95%, Elemental Mercury 96%.
Claims (7)
1. seaweed bio charcoal combination low-temperature plasma synergistic removes the device of sulphur nitre mercury, it is characterised in that including：Inlet channel
(1), cowling panel (2), some processing units, afterbody passage (7), high-voltage ac power (8), earthing or grounding means (9), ground wire
(10), high voltage input line (11) and housing (12)；Inlet channel (1), housing (12) and afterbody passage (7) are sequentially connected, its
In, inlet channel (1) and housing (12) junction, housing (12) and afterbody passage (7) junction are provided with cowling panel (2)；
Some processing units are provided with housing (12)；The output end of high-voltage ac power (8) is by high voltage input line (11) and often
One of plate type electrode connection of level processing unit, another plate type electrode are connect by earthing or grounding means (9) and ground wire (10)
Ground；
Each processing unit includes：Two plate type electrodes (3), medium (4), honeycomb seaweed bio charcoal (5), insulating barrier (6)；Two
Plate type electrode is oppositely arranged, and between be provided with some honeycomb seaweed bio charcoals (5), wherein, the inner side of a battery lead plate is provided with
Medium (4)；Insulating barrier (6) is equipped with the outside of two plate type electrodes.
2. the device of seaweed bio charcoal combination low-temperature plasma synergistic removing sulphur nitre mercury according to claim 1, it is special
Sign is, is fixed between some processing units by way of series, parallel or for series combination parallel connection among housing.
3. the device of seaweed bio charcoal combination low-temperature plasma synergistic removing sulphur nitre mercury according to claim 1, it is special
Sign is that the pole plate spacing of two plate type electrode normal directions is 20~100mm.
4. the device of seaweed bio charcoal combination low-temperature plasma synergistic removing sulphur nitre mercury according to claim 1, it is special
Sign is that the height of the honeycomb seaweed bio charcoal (5) is identical with pole plate spacing, and width is identical with plate width, in flue gas stream
Upwards can holding multiple pieces.
5. the device of seaweed bio charcoal combination low-temperature plasma synergistic removing sulphur nitre mercury according to claim 1, it is special
Sign is that the high-voltage ac power output voltage is 8kV~30kV.
6. the device of seaweed bio charcoal combination low-temperature plasma synergistic removing sulphur nitre mercury according to claim 1, it is special
Sign is that the material of the medium (4) is aluminium oxide ceramics or quartz plate, and low temperature plasma uses dielectric barrier discharge device
Produce.
7. utilize the method for claim 1~6 described device cooperation-removal sulphur nitre mercury, it is characterised in that comprise the following steps：
(1) SO is contained2、NOxClaim 1~6 described device is entered by inlet channel with the flue gas of Elemental Mercury, rectified plate is whole
Stream, into the processing unit of seaweed bio charcoal combination low-temperature plasma synergistic removing sulphur nitre mercury；Low temperature plasma is using Jie
Matter discharge-blocking device produces, and plasma discharge produces high energy electron and a variety of active species with oxidisability, O3Freely
Base, O free radicals, OH free radicals；
(2) gas enter plasma discharge after, first with the high energy electron in plasma, O3Free radical, O free radicals,
OH free radicals, N free radicals, SO2、NOxSO is partially oxidized into Elemental Mercury3、NO2And mercury oxide；Meanwhile in plasma
High energy electron, O3Free radical, O free radicals, OH free radicals, N free radicals can produce activation to honeycomb seaweed bio charcoal, treat cigarette
When gas passes through honeycomb seaweed bio charcoal, the SO of gas phase2、SO3、NOx, Elemental Mercury, mercury oxide is in low temperature plasma and honeycomb marine alga
Under the collective effect of charcoal, honeycomb seaweed bio carbon surface is attracted to, the pollutant in flue gas is removed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711005567.8A CN107837661A (en) | 2017-10-25 | 2017-10-25 | The apparatus and method that seaweed bio charcoal combination low-temperature plasma synergistic removes sulphur nitre mercury |
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| CN201711005567.8A CN107837661A (en) | 2017-10-25 | 2017-10-25 | The apparatus and method that seaweed bio charcoal combination low-temperature plasma synergistic removes sulphur nitre mercury |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108786392A (en) * | 2018-06-07 | 2018-11-13 | 广州华润热电有限公司 | It is a kind of to be used to remove method, adsorbent of oxygen-enriched combusting gas mercury and compound containing mercury and preparation method thereof |
| CN109158082A (en) * | 2018-09-25 | 2019-01-08 | 华中科技大学 | A kind of demercuration method activated online based on porous charcoal |
| CN113385021A (en) * | 2021-07-12 | 2021-09-14 | 杭州同景科技有限公司 | Flue gas treatment system |
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| CN207478280U (en) * | 2017-10-25 | 2018-06-12 | 江苏大学 | Seaweed bio charcoal combination low-temperature plasma synergistic removes the device of sulphur nitre mercury |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108786392A (en) * | 2018-06-07 | 2018-11-13 | 广州华润热电有限公司 | It is a kind of to be used to remove method, adsorbent of oxygen-enriched combusting gas mercury and compound containing mercury and preparation method thereof |
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