CN107875819A - A kind of wet flue gas desulfurization tower - Google Patents
A kind of wet flue gas desulfurization tower Download PDFInfo
- Publication number
- CN107875819A CN107875819A CN201711351258.6A CN201711351258A CN107875819A CN 107875819 A CN107875819 A CN 107875819A CN 201711351258 A CN201711351258 A CN 201711351258A CN 107875819 A CN107875819 A CN 107875819A
- Authority
- CN
- China
- Prior art keywords
- level spray
- cylinder
- spray cylinder
- level
- flue gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003546 flue gas Substances 0.000 title claims abstract description 48
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 36
- 230000023556 desulfurization Effects 0.000 title claims abstract description 34
- 239000007921 spray Substances 0.000 claims abstract description 166
- 239000002002 slurry Substances 0.000 claims abstract description 39
- 239000007789 gas Substances 0.000 claims abstract description 14
- 238000005507 spraying Methods 0.000 claims abstract description 12
- 239000000779 smoke Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 7
- 230000003647 oxidation Effects 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 239000000292 calcium oxide Substances 0.000 description 4
- 235000012255 calcium oxide Nutrition 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000001376 precipitating effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- 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
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/504—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific device
-
- 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
-
- 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
- B01D53/80—Semi-solid phase processes, i.e. by using slurries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Abstract
A kind of wet flue gas desulfurization tower, including tower body, spraying layer includes dividing plate, one-level spray cylinder, two level spray cylinder and three-level spray cylinder in tower body；Dividing plate is connected with tower body inwall, dividing plate is passed through at the top of one-level spray cylinder and is extended to above dividing plate, one-level spray cylinder over top is extended at the top of two level spray cylinder, two level spray cylinder over top is extended at the top of three-level spray cylinder, the bottom of one-level spray cylinder and two level spray cylinder is open, so as to form one-level spray chamber between one-level spray drum outer wall, dividing plate and tower body inwall, two level spray chamber is formed between one-level spray cylinder inwall and two level spray drum outer wall, three-level spray chamber is formed between two level spray cylinder inwall and three-level spray drum outer wall；The top of one-level spray chamber, two level spray chamber and three-level spray chamber is respectively equipped with the first passage, the second passage and the 3rd passage, and gas outlet is set at the top of three-level spray cylinder.Flue gas of the present invention is uniformly distributed in tower body, is fully contacted between slurries and flue gas, and desulfurized effect is good.
Description
Technical field
The invention belongs to desulfurating dust-removing equipment technical field, and in particular to a kind of wet flue gas desulfurization tower.
Background technology
Flue gas desulfurization refers to remove oxysulfide (SO from flue gas or other industrial waste gases2And SO3), the SO in flue gas2
Substantially acid, can be by removing SO from flue gas with appropriate alkali substance reaction2.The most frequently used alkali of flue gas desulfurization
Property material is lime stone (calcium carbonate, CaCO3), quick lime (calcium oxide, CaO) and white lime (calcium hydroxide, Ca (OH)2).Lime
Stone abundance, thus it is relatively cheap, and quick lime and white lime are all produced by lime stone by heating.In wet flue gas
In desulphurization system, alkaline matter (being typically aqueous slkali, more situations are the slurries of alkali) meets with flue gas in spray tower.Cigarette
SO in gas2It is dissolved in water, forms a kind of dilute acid soln, neutralization reaction then occurs with the alkaline matter being dissolved in water.Instead
The sulphite and sulfate that should be generated separate out from the aqueous solution, separate out situation and depend on the relative of different salt present in solution
Dissolubility.
Existing wet flue gas desulfurization tower generally comprises slurry pool, spraying layer and demister, wherein, spray Rotating fields letter
Single, smoke distribution is uneven, causes slurries can not fully to be contacted with flue gas, and desulfurized effect is poor, also, flue gas can only enter with slurries
Row once desulfurization, to multiple desulfurization, then it can only increase spraying layer, this inevitably results in the increase of desulfurization tower height degree, increases production
Cost.
The content of the invention
It is an object of the invention to：Smoke distribution is uneven during for above-mentioned existing wet flue gas desulfurization tower spray desulfurization makes
The problem of into desulfurized effect difference, the present invention provide a kind of wet flue gas desulfurization tower.
The technical solution adopted by the present invention is as follows：
A kind of wet flue gas desulfurization tower, including tower body, slurry pool, spraying layer and demisting are sequentially provided with from bottom to up in tower body
Device, tower body bottom set smoke inlet, and exhanst gas outlet is set at the top of tower body, and the spraying layer includes dividing plate, one-level spray cylinder, set
In the two level spray cylinder in one-level spray cylinder and the three-level spray cylinder in two level spray cylinder；The dividing plate and tower body inwall are close
Envelope connection, the top of one-level spray cylinder through dividing plate and are extended to above dividing plate, and the top of two level spray cylinder sprays through one-level
Cylinder top and the top extended at the top of one-level spray cylinder, the top of three-level spray cylinder through two level spray cylinder top and extend to
Two level spray cylinder over top, the bottom of the one-level spray cylinder and two level spray cylinder are open, so that one-level spray drum outer wall,
One-level spray chamber is formed between dividing plate and tower body inwall, two level spray is formed between one-level spray cylinder inwall and two level spray drum outer wall
Chamber is drenched, three-level spray chamber is formed between two level spray cylinder inwall and three-level spray drum outer wall；The top of the one-level spray chamber is set
There is the first passage connected with two level spray chamber, the top of two level spray chamber is provided with the second ventilation of three-level spray chamber connection
Hole, the top of three-level spray chamber are provided with the 3rd passage connected with three-level spray cylinder, and the top of three-level spray cylinder sets outlet
Mouthful；The top of the one-level spray chamber, two level spray chamber and three-level spray chamber is equipped with the toroidal nozzle being connected with slurry pool, ring
Shape jet pipe is provided with equally distributed nozzle.
, it is necessary to which the flue gas of desulfurization enters tower body from smoke inlet during present invention work, then sprayed in one-level spray cylinder, two level
Three parts are separated into the presence of leaching cylinder and three-level spray cylinder, the flue gas close to tower body inwall enters one-level spray chamber, is located at
The flue gas in tower body centre position enters three-level spray chamber, and remaining flue gas then enters two level spray chamber, and then, slurry pool sprays to annular
Pipe is passed through slurries, and spray desulfurization is carried out by equally distributed nozzle so that desulfurization in batches can be realized into the flue gas in tower body,
And flue gas is uniformly distributed in tower body, be advantageous to fully contact between slurries and flue gas, desulfurized effect is good.In one-level spray chamber
The flue gas for completing spray enters two level spray chamber through the first passage and secondary desulfuration is carried out in two level spray chamber, similarly,
Flue gas in two level spray chamber continues desulfurization through the second passage into three-level spray chamber, and desulfurization is completed in three-level spray chamber
Flue gas then enter three-level spray cylinder through the 3rd passage, then from gas outlet discharge after carry out demisting, finally from exhanst gas outlet
Discharge, the slurries for completing spray are reentered in slurry pool.
Further, slurry pool is connected with oxidation fan.Oxidation fan provides oxygen for slurry pool and reacted, and makes sulfurous
The stable sulfate of hydrochlorate generation and crystallization.
Further, it is provided with agitator in slurry pool.Agitator prevents slurry pool from precipitating, and oxidation reinforced effect.
Further, slurry pool by circulating pump by slurries pump to spraying layer.
In summary, by adopting the above-described technical solution, the beneficial effects of the invention are as follows：
1. the present invention makes flue gas uniform in tower body by setting one-level spray cylinder, two level spray cylinder and three-level spray cylinder
Distribution, and desulfurization in batches is realized by toroidal nozzle, fully contacted between slurries and flue gas, desulfurized effect is good；
2. the flue gas in one-level spray chamber of the present invention can pass through two level spray chamber and three-level before three-level spray cylinder is entered
Spray chamber, desulfurization three times is realized, desulfurization is thorough, and similarly, the flue gas in two level spray chamber can realize desulfurization twice；
Brief description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is spraying layer structural representation of the present invention.
Marked in figure：1- tower bodies, 2- demisters, 3- gas outlets, 4- two level spray cylinders, 5- one-level spray cylinders, 6- circulating pumps,
7- oxidation fans, 8- three-level spray cylinders, 9- slurry pools, 10- agitators, 11- smoke inlets, the passages of 12- first, 13- nozzles,
14- toroidal nozzles, 15- dividing plates, the passages of 16- second, the passages of 17- the 3rd, 18- exhanst gas outlets.
Embodiment
All features disclosed in this specification, can be with any in addition to mutually exclusive feature and/or step
Mode combines.
The present invention is elaborated with reference to Fig. 1, Fig. 2.
Embodiment 1
A kind of wet flue gas desulfurization tower, including tower body 1, be sequentially provided with from bottom to up in tower body 1 slurry pool 9, spraying layer and
Demister 2, the bottom of tower body 1 set smoke inlet 11, and the top of tower body 1 sets exhanst gas outlet 18, the spraying layer include dividing plate 15,
One-level spray cylinder 5, the two level spray cylinder 4 in one-level spray cylinder 5 and the three-level spray cylinder 8 in two level spray cylinder 4；Institute
Dividing plate 15 to be stated to be connected with the inner wall sealing of tower body 1, the top of one-level spray cylinder 5 through dividing plate 15 and extends to the top of dividing plate 15, and two
The top of level spray cylinder 4 is through the top of one-level spray cylinder 5 and extends to the top at the top of one-level spray cylinder 5, three-level spray cylinder 8
Top is through the top of two level spray cylinder 4 and extends to the over top of two level spray cylinder 4, the one-level spray cylinder 5 and two level spray
The bottom of cylinder 4 is open, so as to form one-level spray chamber, one-level between the outer wall of one-level spray cylinder 5, dividing plate 15 and the inwall of tower body 1
Two level spray chamber is formed between the inwall of spray cylinder 5 and the outer wall of two level spray cylinder 4, outside the inwall of two level spray cylinder 4 and three-level spray cylinder 8
Three-level spray chamber is formed between wall；The top of the one-level spray chamber is provided with the first passage 12 connected with two level spray chamber,
The top of two level spray chamber is provided with the second passage 16 of three-level spray chamber connection, and the top of three-level spray chamber is provided with sprays with three-level
The 3rd passage 17 that cylinder 8 connects is drenched, the top of three-level spray cylinder 8 sets gas outlet 3；The one-level spray chamber, two level spray
The top of chamber and three-level spray chamber is equipped with the toroidal nozzle 14 being connected with slurry pool 9, and toroidal nozzle 14 is provided with and is uniformly distributed
Nozzle 13.
, it is necessary to which the flue gas of desulfurization enters tower body 1 from smoke inlet 11, then in one-level spray cylinder 5, two during present invention work
Three parts are separated into the presence of level spray cylinder 4 and three-level spray cylinder 8, the flue gas close to the inwall of tower body 1 sprays into one-level
Chamber, the flue gas positioned at the centre position of tower body 1 enter three-level spray chamber, and remaining flue gas then enters two level spray chamber, then, slurry pool
9 are passed through slurries to toroidal nozzle 14, carry out spray desulfurization by equally distributed nozzle 13 so that the flue gas into tower body 1
Desulfurization in batches can be achieved, and flue gas is uniformly distributed in tower body 1, be advantageous to fully contact between slurries and flue gas, desulfurization effect
Fruit is good.The flue gas that spray is completed in one-level spray chamber enters two level spray chamber through the first passage 12 and entered in two level spray chamber
Row secondary desulfuration, similarly, the flue gas in two level spray chamber continue desulfurization through the second passage 16 into three-level spray chamber,
The flue gas that desulfurization is completed in three-level spray chamber then enters three-level spray cylinder 8 through the 3rd passage 17, after then being discharged from gas outlet 3
Demisting is carried out, is finally discharged from exhanst gas outlet 18, the slurries for completing spray are reentered in slurry pool 9.
Embodiment 2
Based on embodiment 1, slurry pool 9 is connected with oxidation fan 7.Oxidation fan 7 is that slurry pool 9 provides oxygen progress instead
Should, make the stable sulfate of sulphite generation and crystallization.
Embodiment 3
Based on Examples 1 and 2, agitator 10 is provided with slurry pool 9.Agitator 10 prevents slurry pool 9 from precipitating, and adds
Strong oxdiative effect.
Embodiment 4
Based on Examples 1 and 2, slurry pool 9 is by circulating pump 6 by slurries pump to spraying layer.
It is embodiments of the invention as described above.The present invention is not limited to the above-described embodiments, anyone should learn that
The structure change made under the enlightenment of the present invention, the technical schemes that are same or similar to the present invention, each fall within this
Within the protection domain of invention.
Claims (4)
1. a kind of wet flue gas desulfurization tower, including tower body (1), tower body (1) is interior to be sequentially provided with slurry pool (9), spray from bottom to up
Layer and demister (2), tower body (1) bottom set smoke inlet (11), exhanst gas outlet (18), its feature are set at the top of tower body (1)
It is, the spraying layer includes dividing plate (15), one-level spray cylinder (5), the two level spray cylinder (4) in one-level spray cylinder (5)
With the three-level spray cylinder (8) in two level spray cylinder (4)；
The dividing plate (15) is connected with tower body (1) inner wall sealing, and the top of one-level spray cylinder (5) through dividing plate (15) and extends to
Above dividing plate (15), the top of two level spray cylinder (4) through one-level spray cylinder (5) top and extends to one-level spray cylinder (5) top
The top in portion, the top of three-level spray cylinder (8) through two level spray cylinder (4) top and are extended on two level spray cylinder (4) top
The bottom of side, the one-level spray cylinder (5) and two level spray cylinder (4) is open, so that one-level spray cylinder (5) outer wall, dividing plate
(15) one-level spray chamber is formed between tower body (1) inwall, between one-level spray cylinder (5) inwall and two level spray cylinder (4) outer wall
Two level spray chamber is formed, three-level spray chamber is formed between two level spray cylinder (4) inwall and three-level spray cylinder (8) outer wall；
The top of the one-level spray chamber is provided with the first passage (12) connected with two level spray chamber, the top of two level spray chamber
The second passage (16) provided with the connection of three-level spray chamber, the top of three-level spray chamber are provided with what is connected with three-level spray cylinder (8)
3rd passage (17), the top of three-level spray cylinder (8) set gas outlet (3)；
The top of the one-level spray chamber, two level spray chamber and three-level spray chamber is equipped with the annular spray being connected with slurry pool (9)
Manage (14), toroidal nozzle (14) is provided with equally distributed nozzle (13).
2. a kind of wet flue gas desulfurization tower according to claim 1, it is characterised in that slurry pool (9) connection is aerobic
Wind transmission machine (7).
3. a kind of wet flue gas desulfurization tower according to claim 1 or 2, it is characterised in that be provided with the slurry pool (9)
Agitator (10).
4. a kind of wet flue gas desulfurization tower according to claim 1 or 2, it is characterised in that the slurry pool (9) is by following
Ring pump (6) is by slurries pump to spraying layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711351258.6A CN107875819B (en) | 2017-12-15 | 2017-12-15 | Wet flue gas desulfurization tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711351258.6A CN107875819B (en) | 2017-12-15 | 2017-12-15 | Wet flue gas desulfurization tower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107875819A true CN107875819A (en) | 2018-04-06 |
| CN107875819B CN107875819B (en) | 2024-01-30 |
Family
ID=61771556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711351258.6A Active CN107875819B (en) | 2017-12-15 | 2017-12-15 | Wet flue gas desulfurization tower |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109012038A (en) * | 2018-08-10 | 2018-12-18 | 杨明超 | A kind of equipment for treating industrial waste gas |
| CN112275114A (en) * | 2020-09-09 | 2021-01-29 | 程学芳 | Two-stage wet desulphurization tower |
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| CN112275114A (en) * | 2020-09-09 | 2021-01-29 | 程学芳 | Two-stage wet desulphurization tower |
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