CN104107628B - A kind of flue gas desulfurization device and method thereof - Google Patents
A kind of flue gas desulfurization device and method thereof Download PDFInfo
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- CN104107628B CN104107628B CN201410326912.8A CN201410326912A CN104107628B CN 104107628 B CN104107628 B CN 104107628B CN 201410326912 A CN201410326912 A CN 201410326912A CN 104107628 B CN104107628 B CN 104107628B
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- absorption chamber
- spray equipment
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- 239000003546 flue gas Substances 0.000 title claims abstract description 84
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 75
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 36
- 230000023556 desulfurization Effects 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000002250 absorbent Substances 0.000 claims abstract description 106
- 230000002745 absorbent Effects 0.000 claims abstract description 89
- 238000010521 absorption reaction Methods 0.000 claims abstract description 58
- 230000001590 oxidative effect Effects 0.000 claims abstract description 48
- 239000007921 spray Substances 0.000 claims abstract description 46
- 238000005276 aerator Methods 0.000 claims abstract description 28
- 239000000779 smoke Substances 0.000 claims abstract description 24
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 239000003517 fume Substances 0.000 claims abstract description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 20
- 239000000725 suspension Substances 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 10
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000292 calcium oxide Substances 0.000 claims description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 3
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 3
- 238000000746 purification Methods 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 230000000740 bleeding effect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 18
- 238000007254 oxidation reaction Methods 0.000 description 7
- 208000005156 Dehydration Diseases 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 230000018044 dehydration Effects 0.000 description 5
- 238000006297 dehydration reaction Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000003009 desulfurizing effect Effects 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- CVOFKRWYWCSDMA-UHFFFAOYSA-N 2-chloro-n-(2,6-diethylphenyl)-n-(methoxymethyl)acetamide;2,6-dinitro-n,n-dipropyl-4-(trifluoromethyl)aniline Chemical compound CCC1=CC=CC(CC)=C1N(COC)C(=O)CCl.CCCN(CCC)C1=C([N+]([O-])=O)C=C(C(F)(F)F)C=C1[N+]([O-])=O CVOFKRWYWCSDMA-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The fume desulphurization method that the invention discloses a kind of flue gas desulfurization device and adopt this equipment to implement, will containing SO
2flue gas enter absorption chamber (1) by smoke inlet, contact that desulfurization occurs with the absorbent sprayed by spray equipment (11), fresh absorbent and absorb SO from absorption chamber
2absorbent enter oxidizing chamber respectively by the first absorbent entrance (22) and the second absorbent entrance (23), contact to be oxidized with the air injected by aerator (21).Flue gas desulfurization device provided by the invention; comprise absorption chamber and oxidizing chamber (2); absorption chamber and oxidizing chamber are separated by sealing plate (14); can effectively prevent unreacted air from bleeding in the flue gas of absorption chamber, the absorbent under spray equipment spray can remove & gt in flue gas; The SO of 95%
2, further improve CO in flue gas
2concentration, these rational structures, not only increase CO
2concentration, and reduce compression purification system energy consumption, finally reach CO
2the requirement storing and utilize.
Description
Technical field
The present invention relates to a kind of flue gas desulfurization device and method thereof.
Background technology
Along with the aggravation of global warming, as the CO of greenhouse gases principal element
2emission problem causes the concern in the whole world gradually.CO
2trapping (CCS) technology be mainly divided into burning before, burning in and post-combustion capture.Oxygen-enriched combustion technology traps CO as in burning
2technology, is separated the oxygen in lieu of air that obtains as oxidant when burning, to improve the CO in burning and gas-exhausting using the Poor oxygen gas in flue gas with from air
2concentration.The CO of high concentration
2compressed, dry and further purification can enter pipeline and store.This technology can not only separated and collected CO
2can also reduce the discharge of NOx, be that one effectively can reduce CO
2the New combustion technique of the most potentiality of discharge.But due to containing SO in the flue gas of oxygen-enriched combusting
2gas, treatment S O
2during gas, generally adopt wet desulfurizing process, but in existing wet desulfurizing process, owing to being interconnected between absorption chamber and oxidizing chamber, from oxidation pond, unreacted air out bleeds in the flue gas of absorption chamber, for oxygen-enriched combusting power plant, can cause CO in flue gas like this
2concentration reduce, making to compress the energy consumption of purification system significantly increases.Research shows, in oxygen-enriched combusting power plant, leaks out and often increases by 1%, and power plants generating electricity efficiency just reduces by 0.2%.Too serious if leaked out, final CO will be caused
2concentration does not reach the requirement storing and utilize.Therefore, need a kind of unreacted air that can prevent badly and bleed in the flue gas of absorption chamber, CO in flue gas can also be improved simultaneously
2the equipment of concentration and method.
Summary of the invention
The object of the invention is to overcome unreacted air in existing sulfur method bleeds in the flue gas of absorption chamber, makes CO in flue gas
2concentration reduces, thus adds the defect of compression purification system energy consumption, provides a kind of flue gas desulfurization device and method thereof.
To achieve these goals, the invention provides a kind of flue gas desulfurization device, this equipment comprises absorption chamber and oxidizing chamber, and described absorption chamber has smoke inlet, and its inside is provided with spray equipment; Described oxidizing chamber has the outlet of the first absorbent entrance, the second absorbent entrance and absorbent, and its inside is provided with aerator, containing SO
2flue gas enter described absorption chamber by described smoke inlet, contact that desulfurization occurs with the absorbent sprayed by described spray equipment, fresh absorbent and absorb SO from described absorption chamber
2absorbent enter described oxidizing chamber respectively by the first absorbent entrance and the second absorbent entrance, contact to be oxidized with the air injected by aerator, to be exported by absorbent from the absorbent after peroxidating of described oxidizing chamber and be recycled to absorption chamber via described spray equipment.
Present invention also offers the fume desulphurization method adopting above-mentioned flue gas desulfurization device to implement, the method comprises: will containing SO
2flue gas enter described absorption chamber by described smoke inlet, contact that desulfurization occurs with the absorbent sprayed by described spray equipment, fresh absorbent and absorb SO from described absorption chamber
2absorbent enter described oxidizing chamber respectively by the first absorbent entrance and the second absorbent entrance, contact to be oxidized with the air injected by aerator.
According to a kind of flue gas desulfurization device provided by the invention, comprise absorption chamber and oxidizing chamber, absorption chamber and oxidizing chamber are separated by sealing plate, can effectively prevent unreacted air from bleeding in the flue gas of absorption chamber, the CO in dilution flue gas
2, owing to being provided with spray equipment in absorption chamber, the absorbent under spray equipment spray can remove the SO of >95% in flue gas
2, further improve CO in flue gas
2concentration, these rational structures, not only increase CO
2concentration, and reduce compression purification system energy consumption, finally reach CO
2the requirement storing and utilize.
Other features and advantages of the present invention are described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for description, is used from explanation the present invention, but is not construed as limiting the invention with detailed description of the invention one below.In the accompanying drawings:
Fig. 1 is the structural representation of a kind of embodiment of flue gas desulfurization device provided by the invention.
Description of reference numerals
1 absorption chamber 11 spray equipment 12 smoke inlet
The clean exhanst gas outlet of 13 demister 14 sealing plate 15
16 water pump 17 second absorbents export 18 circulating pumps
19 control valve 2 oxidizing chamber 21 aerators
22 first absorbent entrance 23 second absorbent entrance 24 absorbent outlets
25 discharge pipe 26 blower fan 27 unreacted air outlet slits
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, detailed description of the invention described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
In the present invention, when not doing contrary explanation, the noun of locality such as " upper and lower " of use typically refers to reference to shown in the drawings upper and lower; " inside and outside " refers to profile inside and outside relative to each parts itself.
As shown in Figure 1, the invention provides a kind of flue gas desulfurization device, this equipment comprises absorption chamber 1 and oxidizing chamber 2, and described absorption chamber 1 has smoke inlet 12, and its inside is provided with spray equipment 11; Described oxidizing chamber 2 has the first absorbent entrance 22, second absorbent entrance 23 and absorbent outlet 24, and its inside is provided with aerator 21, containing SO
2flue gas enter described absorption chamber 1 by described smoke inlet 12, contact that desulfurization occurs with the absorbent sprayed by described spray equipment 11, fresh absorbent and absorb SO from described absorption chamber 1
2absorbent enter described oxidizing chamber 2 respectively by the first absorbent entrance 22 and the second absorbent entrance 23, contact to be oxidized with the air injected by aerator 21, from the absorbent after peroxidating of described oxidizing chamber 2 by absorbent outlet 24 and be recycled to absorption chamber 1 via described spray equipment 11.
According to the present invention, described absorption chamber 1 comprises clean exhanst gas outlet 15, spray equipment 11, smoke inlet 12 and the second absorbent outlet 17, and wherein, described clean exhanst gas outlet 15 is arranged on the top pars intermedia of absorption chamber 1, and clean flue gas refers to and removes SO
2after rich CO
2flue gas; The position of described smoke inlet 12 is positioned at the below of spray equipment 11, and the absorbent making spray equipment 11 spray so comprehensively can absorb the SO in flue gas
2; The position of described second absorbent outlet 17 is positioned at the below of smoke inlet 12, and the second absorbent outlet 17 to absorb SO in flue gas
2absorbent discharge, then control flow by control valve 19, flowed in oxidizing chamber 2 by the second absorbent entrance 23, make to absorb SO in flue gas
2absorbent in oxidizing chamber 2, complete oxidation reaction fully.
According to the present invention, described fresh absorbent refers to and does not absorb SO
2absorbent, this fresh absorbent is flowed in oxidizing chamber by the first absorbent entrance 22, and the first absorbent entrance 22 is positioned at the top of the second absorbent entrance 23.
According to the present invention, in order to will SO be absorbed
2absorbent obtain fully comprehensively oxidation, the aerator 21 in oxidizing chamber 2 is arranged at below the liquid level of described mixed liquor, with ensure air that aerator 21 sprays can completely with absorb SO
2absorbent contact occur oxidation reaction.
According to the present invention, be provided with unreacted air outlet slit 27 in described oxidizing chamber 2, the position of this outlet is positioned at the ullage of described mixed liquor, and the setting of this outlet is in order to unreacted air can be made to discharge.
According to the present invention, be provided with discharge pipe 25 in described oxidizing chamber 2, this discharge pipe 25 is substantially disposed in the bottom of oxidizing chamber 2, can make the easier discharge of the product of oxidation reaction like this.
According to the present invention, unreacted fresh absorbent in described oxidizing chamber 2, exports 24 by circulating pump 18 by absorbent and is pumped in spray equipment 11, described fresh absorbent is recycled.
According to the present invention, the air in oxidizing chamber 2 sends into oxidizing chamber by blower fan 26, and in described mixed liquor, spray air by the air nozzle on aerator 21, makes to absorb SO
2absorbent generation oxidation reaction, in order to make absorption SO
2absorbent completely oxidized, the opening upwards of air nozzle can be arranged.To the distance on aerator 21 between each air nozzle, there is no particular limitation in the present invention, equidistantly can arrange, also can non-equally arrange, as long as can make to absorb SO
2absorbent completely oxidized.
According to the present invention, in order to prevent unreacted air from entering in the flue gas of absorption chamber 1 by connecting pipe, can by the position of the position of aerator 21 higher than absorbent outlet 24.
According to the present invention, described spray equipment 11 is set to multilayer shower nozzle, and every layer of shower nozzle is provided with multiple water spout, and water spout opening can be arranged downwards, so more easily makes the SO in flue gas
2gas is absorbed by absorbent.
According to the present invention, in order to make the SO in flue gas
2gas all can touch the absorbent that spray equipment 11 sprays, by the position of the nozzle position of spray equipment 11 higher than smoke inlet 12.
According to the present invention, described absorption chamber 1 is structure as a whole with oxidizing chamber 2, and absorption chamber 1 is positioned at the top of oxidizing chamber 2, and the two is separated by sealing plate 14.
According to the present invention, described sealing plate 14 is corrosion resistance material, such as, can be carbon steel rubber lining etc.
According to the present invention, in order to the water smoke in flue gas is removed, described absorption chamber also comprises demister 13, described demister 13 is positioned at directly over spray equipment 11, the below of clean exhanst gas outlet 15, and be connected with water pump 16, described demister 13 is provided with water spout, by water spout, interval is carried out to demister 13 and rinse.
Present invention also offers a kind of fume desulphurization method implemented by described flue gas desulfurization device, the method comprises: will containing SO
2flue gas enter described absorption chamber 1 by described smoke inlet 12, contact that desulfurization occurs with the absorbent sprayed by described spray equipment 11, fresh absorbent and absorb SO from described absorption chamber 1
2absorbent enter described oxidizing chamber 2 respectively by the first absorbent entrance 22 and the second absorbent entrance 23, contact to be oxidized with the air injected by aerator 21.
Particularly, will containing SO
2flue gas enter described absorption chamber 1 by described smoke inlet 12, contact that desulfurization occurs with the absorbent sprayed by described spray equipment 11, water smoke removal in flue gas is obtained clean flue gas by demister 13 by flue gas after desulfurization, and clean flue gas is discharged by clean exhanst gas outlet; Absorb SO
2absorbent 17 flow in oxidizing chamber 2 by the second absorbent outlet, the air sprayed with aerator 21 contacts that oxidation reaction occurs, and will absorb SO
2absorbent be oxidized further and generate containing the stable compound of S, this compound is discharged by discharge pipe 25, remaining unreacted air is discharged by unreacted air 27, the fresh absorbent do not reacted exports 24 by circulating pump 18 by absorbent and is pumped in spray equipment 11, and described fresh absorbent is recycled.To described fresh absorbent, there is no particular limitation in the present invention, as long as can with the SO in flue gas
2gas generation desulphurization reaction, such as fresh absorbent can be the one in calcium oxide suspension, calcium carbonate suspension or magnesia magma.
In the present invention, to the temperature of flue gas in described absorption chamber, there is no particular limitation, as long as make the SO in flue gas
2better and absorbent generation desulphurization reaction, the temperature of such as flue gas can be 45-65 DEG C to gas.
Below will be described the present invention by embodiment.
In following examples and comparative example, record CO in clean flue gas by CEMS (flue gas discharge continuous monitoring system)
2and SO
2concentration.
Embodiment 1
The structure of the flue gas desulfurization device that the present embodiment adopts is as shown in Figure 1, specific as follows:
Described flue gas desulfurization device comprises absorption chamber 1 and the oxidizing chamber 2 of integrative-structure, and absorption chamber 1 is positioned at directly over oxidizing chamber 2, the two is separated by sealing plate 14, the pars intermedia on absorption chamber top is provided with clean exhanst gas outlet 15, the below of clean exhanst gas outlet 15, the top in absorption chamber is provided with demister 13, demister 13 is provided with water spout, demister 13 is connected with water pump 16, the below of demister 13 is provided with spray equipment 11, spray equipment 11 is provided with four layers of shower nozzle, opening direction is arranged all downwards, the below of spray equipment 11 is provided with smoke inlet 12, the below of smoke inlet 12 is provided with the second absorbent outlet, aerator 21 is provided with in oxidizing chamber 2, aerator 21 is provided with air nozzle, and the opening upwards of air nozzle, aerator 21 is connected with blower fan 26, oxidizing chamber 2 is provided with the first absorbent entrance 22, the below of the first absorbent entrance 22 is provided with the second absorbent entrance 23, second absorbent entrance 23 and the second absorbent are provided with control valve 19 between exporting 17, oxidizing chamber 2 is provided with unreacted air outlet slit 27, unreacted air outlet slit 27 is positioned at the top of aerator 21, the below of unreacted air outlet slit 27 is provided with absorbent outlet 24, absorbent outlet 24 is positioned at the below of aerator 21, absorbent outlet 24 is connected with spray equipment 11, therebetween circulating pump 18 is provided with, the below of absorbent outlet 24 is provided with discharge pipe 25.
Adopt above-mentioned flue gas desulfurization device to implement fume desulphurization method, fresh calcium carbonate suspension is flowed in oxidizing chamber 2 by the first absorbent entrance 22, then is pumped into the spray equipment 11 in absorption chamber 1 through circulating pump 18; Containing SO
2the flue gas of gas is entered by smoke inlet, and the calcium carbonate suspension sprayed with spray equipment 11 is reverse to be contacted, and desulphurization reaction occurs, and wherein, in absorption chamber, flue-gas temperature is 65 DEG C, absorbs SO
2the calcium carbonate suspension of gas is flowed out, by flowing in oxidizing chamber 2 after control valve adjust flux by the second absorbent outlet 17; Air arrives in aerator 21 by blower fan 26, to be sprayed into by air absorb SO by aerator 21
2in the calcium carbonate suspension of gas and the mixed liquor of fresh calcium carbonate suspension, make to absorb SO
2the calcium carbonate suspension of gas is oxidized generation gypsum crystallization further, and gypsum crystallization is discharged from discharge pipe 25, and unreacted air is discharged by unreacted air outlet slit 27; After flue gas after desulfurization removes water smoke by demister 13, discharged by clean exhanst gas outlet 15, after condensing to 30 DEG C of dehydrations, adopt CEMS to record CO in clean flue gas
2concentration be 80%, SO
2concentration is 30ppm.
Embodiment 2
Flue gas desulfurization device and embodiment 1 equipment similar, be provided with three layers of shower nozzle unlike spray equipment 11.
Carry out flue gas desulfurization according to the method for embodiment 1, replace with calcium oxide suspension unlike by calcium carbonate suspension, the temperature of flue gas is 65 DEG C and replaces 55 DEG C, after condensing to 30 DEG C of dehydrations, adopts CEMS to record CO in clean flue gas
2concentration be 80%, SO
2concentration is 50ppm.
Embodiment 3
Flue gas desulfurization device and embodiment 1 equipment similar, be provided with three layers of shower nozzle unlike spray equipment 11.
Carry out flue gas desulfurization according to the method for embodiment 1, replace with magnesia magma unlike by calcium carbonate suspension, the temperature of flue gas is 65 DEG C and replaces 45 DEG C, after condensing to 30 DEG C of dehydrations, adopts CEMS to record CO in clean flue gas
2concentration be 80%, SO
2concentration is 60ppm.
Embodiment 4
Flue gas desulfurization device and embodiment 1 equipment similar, the position unlike aerator 21 be positioned at absorbent outlet 24 below.
Carry out flue gas desulfurization according to the method for embodiment 1, obtain clean flue gas, after condensing to 30 DEG C of dehydrations, adopt CEMS to record CO in clean flue gas
2concentration be 77%, SO
2concentration is 30ppm.
Comparative example 1
Flue gas desulfurization device and embodiment 1 equipment similar, there is no sealing plate 14 unlike between absorption chamber 1 and oxidizing chamber 2.
Carry out flue gas desulfurization according to the method for embodiment 1, obtain clean flue gas, after condensing to 30 DEG C of dehydrations, adopt CEMS to record CO in clean flue gas
2concentration be 73%, SO
2concentration is 30ppm.
As can be seen from embodiment and comparative example, separated by sealing plate 14 between absorption chamber 1 and oxidizing chamber 2, unreacted air in oxidizing chamber 2 effectively can be avoided to bleed in absorption chamber 1, improve CO in flue gas
2concentration.
In addition, as can be seen from embodiment 1 and embodiment 2, the shower nozzle of spray equipment 11 one deck more than the shower nozzle of spray equipment 11 in embodiment 2 in embodiment 1, SO in the clean flue gas that final embodiment 1 obtains
2concentration ratio embodiment 2 is low; The CO finally obtained by embodiment 1 and embodiment 4
2concentration can be found out, when the position of aerator 21 exports the position of 24 higher than absorbent, unreacted air can be avoided to be entered in absorption chamber 1 by connecting pipe, thus improves CO in flue gas
2concentration.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible combination.
In addition, also can be combined between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (7)
1. a flue gas desulfurization device, this equipment comprises absorption chamber (1) and oxidizing chamber (2), and described absorption chamber (1) has smoke inlet (12), and its inside is provided with spray equipment (11); Described oxidizing chamber (2) has the first absorbent entrance (22), the second absorbent entrance (23) and absorbent outlet (24), and its inside is provided with aerator (21), containing SO
2flue gas enter described absorption chamber (1) by described smoke inlet (12), contact that desulfurization occurs with the absorbent sprayed by described spray equipment (11), fresh absorbent and absorb SO from described absorption chamber (1)
2absorbent enter described oxidizing chamber (2) respectively by the first absorbent entrance (22) and the second absorbent entrance (23), contact to be oxidized with the air injected by aerator (21), export (24) from the absorbent after peroxidating of described oxidizing chamber (2) by absorbent and be recycled to absorption chamber (1) via described spray equipment (11); Described aerator (21) is provided with air nozzle, and air nozzle opening upwards, described aerator (21) is higher than absorbent outlet (24); Described absorption chamber (1) and oxidizing chamber (2) are structure as a whole, and absorption chamber (1) is positioned at the top of oxidizing chamber (2), and the two is separated by sealing plate (14).
2. equipment according to claim 1, wherein, described spray equipment (11) comprises multilayer shower nozzle.
3. equipment according to claim 2, wherein, the shower nozzle of described spray equipment (11) is higher than smoke inlet (12).
4. equipment according to claim 1, wherein, described equipment also comprises the demister (13) being arranged on absorption chamber (1) inside, for removing the water smoke in the flue gas after desulfurization, described demister (13) is positioned at directly over spray equipment (11).
5. adopt the fume desulphurization method that the flue gas desulfurization device in claim 1-4 described in any one is implemented, the method comprises: will containing SO
2flue gas enter described absorption chamber (1) by described smoke inlet (12), contact that desulfurization occurs with the absorbent sprayed by described spray equipment (11), fresh absorbent and absorb SO from described absorption chamber (1)
2absorbent enter described oxidizing chamber (2) respectively by the first absorbent entrance (22) and the second absorbent entrance (23), contact to be oxidized with the air injected by aerator (21).
6. method according to claim 5, wherein, described fresh absorbent is the one in calcium oxide suspension, calcium carbonate suspension or magnesia magma.
7. method according to claim 5, wherein, the temperature of described absorption chamber (1) interior flue gas is 45-65 DEG C.
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| US10143957B2 (en) * | 2015-07-21 | 2018-12-04 | Huaneng Power International, Inc. | High-efficiency gradient hierarchy complex desulfurizing tower |
| CN114351188B (en) * | 2022-01-10 | 2023-08-01 | 青岛中石大环境与安全技术中心有限公司 | Method and device for producing hydrogen by electrolysis of water and capturing carbon dioxide |
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| CN204034541U (en) * | 2014-07-10 | 2014-12-24 | 中国神华能源股份有限公司 | A kind of flue gas desulfurization device |
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| CN103480265A (en) * | 2013-09-16 | 2014-01-01 | 青岛渤海和合工程技术有限公司 | Method for recovering by-products while using magnesium oxide for controlling SO2 waste gas |
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