CN108585013A - A kind of useless grey oxidative system of semi-dry desulphurization - Google Patents
A kind of useless grey oxidative system of semi-dry desulphurization Download PDFInfo
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- CN108585013A CN108585013A CN201810326834.XA CN201810326834A CN108585013A CN 108585013 A CN108585013 A CN 108585013A CN 201810326834 A CN201810326834 A CN 201810326834A CN 108585013 A CN108585013 A CN 108585013A
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- Prior art keywords
- useless
- desulfurization
- semi
- slurries
- slurries area
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- 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.)
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- 230000001590 oxidative effect Effects 0.000 title claims abstract description 43
- 239000002002 slurry Substances 0.000 claims abstract description 49
- 239000007921 spray Substances 0.000 claims abstract description 48
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 40
- 230000023556 desulfurization Effects 0.000 claims abstract description 37
- 239000007800 oxidant agent Substances 0.000 claims abstract description 28
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 15
- 239000001301 oxygen Substances 0.000 claims abstract description 15
- 230000008676 import Effects 0.000 claims abstract description 12
- 229910052925 anhydrite Inorganic materials 0.000 claims abstract description 9
- 239000011505 plaster Substances 0.000 claims abstract description 8
- 230000008439 repair process Effects 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 238000007254 oxidation reaction Methods 0.000 abstract description 23
- 230000003647 oxidation Effects 0.000 abstract description 20
- 238000005265 energy consumption Methods 0.000 abstract description 7
- 238000013461 design Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000005507 spraying Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 abstract description 2
- 239000010802 sludge Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 238000005094 computer simulation Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/46—Sulfates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention provides a kind of useless grey oxidative system of semi-dry desulphurization, belongs to field of environment engineering technology.The system includes the useless grey import of desulfurization, slurries area, spray tube, oxidant nozzle, spray gun and desulfurated plaster outlet, the useless grey import of desulfurization be located at exterior lower right side far from bottom a quarter at；Slurries area is located at system lower part, occupies three/two system inner space；Oxidant nozzle is located at the top of system memory for spraying oxidant；Spray gun promotes CaSO for providing oxygen source3It is oxidized to CaSO4, while for being blown bottom sludge, the useless ash of desulfurization being effectively prevent to occur in the siltation phenomenon of system bottom；Slurries area floor design is ramped shaped, effectively prevents siltation of the useless ash of desulfurization in bottom.The system have many advantages, such as it is with good investment, take up little area, low energy consumption, easy to operate, oxidation efficiency is high.
Description
Technical field
The present invention relates to field of environment engineering technology, particularly relate to a kind of useless grey oxidative system of semi-dry desulphurization.
Background technology
Since it is invested, operating cost is low, desulfuration efficiency is high for wet desulphurization, is widely used at present, but it has outlet powder
The problems such as dust concentration is exceeded, the gypsum rain that floats, coloured plume；Dry desulfurization is invested and operating cost is high, and it is difficult full to export dust
The ultra-clean emission request of foot；Semidry method is invested and operating cost is low, desulfuration efficiency is high, outlet dust content is low and there is no coloured
Plume, therefore become desulfurization first choice technique in recent years.Since semi-dry desulphurization ash dosage is big, desulfurization give up ash comprehensive utilization also at
For research hotspot in recent years, the problem of complex utilization of the useless ash of desulfurization is solved, actually solves CaSO in the useless ash of desulfurization3Oxidation
At CaSO4The problem of.Current existing desulphurized ash oxidation device, such as Chinese patent：A kind of ZL201620209119.4 " semidry methods
The closed oxidation unit of Desulphurization "；CN201410380659.4 " two sections of dry method, semi-dry desulphurization ash oxygen-enriched external heat oxygen of revolution
Chemical industry skill and device "；ZL201620928355.1 " a kind of desulphurized ash oxidation device "；ZL201020627340.4 " Desulphurization oxygen
Makeup is set "；ZL201621001279.6 " a kind of novel desulphurization ash oxidation unit "；ZL201621001280.9 " the oxygen of Desulphurization
Makeup is set " etc. be directed to the useless grey dry ash of desulfurization and aoxidized, need external heat to provide oxidizing temperature, not only high energy consumption, and oxygen
Changing efficiency can not ensure；The prior art promotes to aoxidize also by oxidant is sprayed in dry ash, due to spraying uneven, oxygen
The useless ash of agent and desulfurization is insufficient contact, causes oxidation efficiency very low, and if not by external heat, CaSO under dry state3Oxidation
At CaSO4Efficiency it is very limited.
Invention content
Existing Desulphurization oxidation technology energy consumption is big, oxidation efficiency is low, investment and operating cost height etc. in order to solve by the present invention
A series of problems provides a kind of useless grey oxidative system of semi-dry desulphurization.
The system includes that the useless grey import of desulfurization, slurries area, spray tube, oxidant nozzle, spray gun and desulfurated plaster export,
In, the useless grey import of desulfurization is arranged at the exterior lower right side is far from bottom 1/4, through computer simulation and repetition test find into
Mouth setting is not easy to form floating dust in this position, the useless ash of desulfurization in oxidation unit；Desulfurated plaster outlet is located at the useless grey import of desulfurization
Lower part, lower part is slurries area in the system, and slurries area occupies 2/3 internal system space, is sent out through computer simulation and repetition test
Now when slurries area occupies 2/3 inner space, the useless ash of desulfurization is most abundant with slurry liquid contacts, and injection effect is best, and oxidation reaction is most
Thoroughly, it and is not easy to form siltation in bottom；Spray tube is arranged on the outside of the system head, can realize on-bne repair, spray tube
Top connects oxidant nozzle；Oxidant nozzle is located at the top of the system memory, is connected with spray tube；Spray gun is along slurries area bottom
Face is arranged.
Slurries area bottom is ramped shaped, and slurries area bottom surface angle with horizontal plane is 20 degree, and slurries area bottom and system are vertical
Four angles of outer wall are arc-shaped, wherein a pair of of the circular arc in left side is 110 degree, right side another pair circular arc is 70 degree；Slurries
Area's width is 1-10m, a length of 1-10m, a height of 1-10m.
Oxidant nozzle be evenly distributed on the system head away from 0.1 ~ 0.5m of upper end at, every group of oxidant nozzle has 4-10
It is a, 2-10 groups are shared, can realize on-bne repair.Oxidant lance is all connected with Universal rotary head, and injection direction becomes in 0~180 °
Change, can according to circumstances adjust spray angles, to reach best spraying effect, spray coverage rate is up to 100-300.
Spray gun has 1-6, gun traffic 1-10m3/ h, spray gun pressure 1-10kg.
Spray gun is for providing CaSO3It is oxidized to CaSO4Oxygen source and injection slurries area（2）It deposits bottom.
The system Desulphurization treating capacity is 0.5 ~ 20t/h.
The system aoxidizes the useless ash of desulfurization under wet condition, due to containing in the temperature of the useless ash of desulfurization itself and useless ash
The CaO not reacted completely, therefore oxidizing temperature can guarantee that oxidation efficiency can reach 95% or more at 50 degree or more, not need other
External heat reduces energy consumption, reduces investment and operating cost.Spray tube is external so that oxidant nozzle may be implemented to examine online
It repaiies.
The above-mentioned technical proposal of the present invention has the beneficial effect that：
The system utilizes useless ash using the useless ash design of wet oxidation-desulfurizing, the i.e. useless ash of desulfurization in the case where not needing external heat
Remaining unreacted CaO secondary responses generate Ca (OH) in the temperature of itself and useless ash2The heat discharged is sufficient for
CaSO in useless ash3It is oxidized to CaSO4Temperature requirements.Circular arc angle and the design of ground slope have been done in present slurry area bottom,
Slurries area bottom surface angle with horizontal plane is 20 degree, and the circular arc at four angles in bottom surface is respectively 110 degree, 110 degree, 70 degree and 70 degree, warp
Laboratory test and computer simulation are designed according to the present invention, and bottom desulfurization useless ash siltation in slurries area can reduce by 30%, not only prolong
Grown the period of the clear mud in bottom, also so that the useless ash of desulfurization in slurries more fully with the oxygen and the oxygen that gets off of spray in air
Agent contacts, and improves oxidation efficiency.
Present device floor space is small, do not need external heat source, low energy consumption, oxidation efficiency is high, and it is de- to solve semidry method
The problems such as the useless grey oxidation efficiency of sulphur is low, investment and operating cost height.
Description of the drawings
Fig. 1 is the useless grey oxidative system structural schematic diagram of the semi-dry desulphurization of the present invention.
Wherein：The useless grey import of 1- desulfurization；2- slurries area；3- spray tubes；4- oxidant nozzles；5- spray guns；6- desulfurated plasters
Outlet.
Specific implementation mode
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.
High energy consumption, investment and operating cost existing for the existing desulphurized ash oxidation device of the present invention are high, oxidation is not thorough
Problem provides a kind of economy, the useless grey oxidative system of semi-dry desulphurization that floor space is small, oxidation effectiveness is prominent, low energy consumption.
As shown in Figure 1, the useless grey import 1 of desulfurization is arranged at the exterior lower right side is far from bottom 1/4 in the system；Desulfurization
Gypsum outlet 6 is located at 1 lower part of the useless grey import of desulfurization, and lower part is slurries area 2 in the system, and slurries area 2 occupies 2/3 internal system sky
Between, spray tube 3 is arranged on the outside of the system head, can realize on-bne repair；Oxidant nozzle 4 is located at the system memory top
Portion is connected with spray tube 3；Spray gun 5 is along 2 sole arrangement of slurries area.
2 bottom of slurries area is ramped shaped, and 2 bottom surface angle with horizontal plane of slurries area is 20 degree, and 2 bottom of slurries area is perpendicular with system
Four angles of straight outer wall are arc-shaped, wherein a pair of of the circular arc in left side is 110 degree, right side another pair circular arc is 70 degree；Slurry
2 width of liquid zone is 1-10m, a length of 1-10m, a height of 1-10m.
Oxidant nozzle 4 be evenly distributed on the system head away from 0.1 ~ 0.5m of upper end at, 4 every groups of oxidant nozzle has 4-10
It is a, 2-10 groups are shared, can realize on-bne repair.
Spray gun 5 has 1-6, and 5 flow of spray gun is 1-10m3/ h, 5 pressure of spray gun are 1-10kg.Spray gun pumps phase with normal air
Even, for providing CaSO3It is oxidized to CaSO4Oxygen source and injection bottom siltation.
In specific design, 4 sprayed mist bead diameter of oxidant nozzle can be as small as a few micrometers, fully ensure that and slurries area 2
Middle slurries effectively contact, and oxidant nozzle 4 is connected with Universal rotary head, and injection direction changes in 0~180 °, can according to circumstances adjust
Spray angles are saved, a variety of spray directions of vertical spray, fair current spray, countercurrent spray and other angles combination are equipped with, it both can be with
It effectively reduces and is overlapped invalid spray area coverage, and " dead angle blind area " can be eliminated to the full extent, it is best to reach
Spraying effect, up to 100-300, oxidant nozzle 4 is connected spray coverage rate with spray tube 3, and spray tube 3 is arranged outside system
Face, to realize the on-bne repair of oxidant nozzle 4.2 bottom of slurries area is set as ramped shaped, angle with horizontal plane 20
Degree, and four angles on ground are both designed as arc-shaped, four angles are respectively 110 degree, 110 degree, 70 degree and 70 degree.It is tried through laboratory
It tests and computer simulation, the special designing of 2 bottom of slurries area, the useless ash of desulfurization can be made to reduce by 30% in the siltation of bottom, not only prolonged
Grown the period of the clear mud in bottom, also so that the useless ash of desulfurization in slurries more fully with the oxygen and the oxygen that gets off of spray in air
Agent contacts, and improves oxidation efficiency, CaSO3It is oxidized to CaSO4Efficiency up to 95% or more.
In a particular application, 80 degree or so of desulfurization of semi-dry desulphurization system interval discharge is useless grey from the useless grey import of desulfurization
1 enters the system, adds water in the system so that the volumetric spaces in slurries area 2 occupy the 2/3 of whole system, due to the useless ash of desulfurization
Contain a small amount of CaO in the temperature of itself and the useless ash of desulfurization, the oxidizing temperature in slurries area 2 is always at 50 degree or more, to effectively
It ensure that oxidation efficiency.The liquid oxidizer that oxidant nozzle 4 sprays equably is trickled down in slurries area 2, oxidant and desulfurization
Useless ash slurries come into full contact with, while the pressure-air that the spray gun 5 positioned at 2 bottom of slurries area ejects is continuous in slurries area 2
Stir the useless ash slurries of desulfurization so that the useless ash of desulfurization comes into full contact with the oxygen in air, and the oxidant of supplement, thus will
CaSO3It is oxidized to CaSO4.Spray gun 5 aoxidizes CaSO in addition to providing pressure-air3Outside, the mud of 2 bottom of slurries area is gone back while clearing up,
So that the useless ash of desulfurization rolls in slurries completely, oxidation efficiency is maintained at 95% or more, and the cleaning cycle of bottom sludge significantly prolongs
It is long.After oxidation in 1 hour, the system is discharged from desulfurated plaster outlet 6 in well-oxygenated high-quality desulfurated plaster, through sheet frame pressure
It is sent to Building Materials Factory after filter dehydration.Desulfurated plaster press filtration waste water comes back in the system.So far one is completed entirely to recycle.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, several improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (6)
1. a kind of useless grey oxidative system of semi-dry desulphurization, it is characterised in that：Including the useless grey import of desulfurization（1）, slurries area（2）, spray
Shower pipe（3）, oxidant nozzle（4）, spray gun（5）It is exported with desulfurated plaster（6）, wherein the useless grey import of desulfurization（1）It is arranged and is at this
Unite external right on the downside of away from bottom 1/4 at；Desulfurated plaster exports（6）Positioned at the useless grey import of desulfurization（1）Lower part, lower part is in the system
Slurries area（2）, slurries area（2）Occupy 2/3 internal system space, spray tube（3）It is arranged on the outside of the system head, can realizes
On-bne repair, spray tube（3）Top connects oxidant nozzle（4）；Oxidant nozzle（4）At the top of the system memory, with spray
Shower pipe（3）It is connected；Spray gun（5）Along slurries area（2）Sole arrangement.
2. the useless grey oxidative system of semi-dry desulphurization according to claim 1, it is characterised in that：The slurries area（2）Bottom
For ramped shaped, slurries area（2）Bottom surface angle with horizontal plane is 20 degree, slurries area（2）Four folders of bottom and the vertical outer wall of system
Angle is arc-shaped, wherein a pair of of the circular arc in left side is 110 degree, right side another pair circular arc is 70 degree；Slurries area（2）Width is 1-
10m, a length of 1-10m, a height of 1-10m.
3. the useless grey oxidative system of semi-dry desulphurization according to claim 1, it is characterised in that：The oxidant nozzle（4）
Be evenly distributed on the system head away from 0.1 ~ 0.5m of upper end at, oxidant nozzle（4）Every group has 4-10, shares 2-10 groups, energy
Enough realize on-bne repair.
4. the useless grey oxidative system of semi-dry desulphurization according to claim 1, it is characterised in that：The spray gun（5）There is 1-6
It is a, spray gun（5）Flow is 1-10m3/ h, spray gun（5）Pressure is 1-10kg.
5. the useless grey oxidative system of semi-dry desulphurization according to claim 1, it is characterised in that：The spray gun（5）For carrying
For CaSO3It is oxidized to CaSO4Oxygen source and injection slurries area（2）It deposits bottom.
6. the useless grey oxidative system of semi-dry desulphurization according to claim 1, it is characterised in that：The system Desulphurization treating capacity
For 0.5 ~ 20t/h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810326834.XA CN108585013A (en) | 2018-04-12 | 2018-04-12 | A kind of useless grey oxidative system of semi-dry desulphurization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810326834.XA CN108585013A (en) | 2018-04-12 | 2018-04-12 | A kind of useless grey oxidative system of semi-dry desulphurization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108585013A true CN108585013A (en) | 2018-09-28 |
Family
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| CN201810326834.XA Pending CN108585013A (en) | 2018-04-12 | 2018-04-12 | A kind of useless grey oxidative system of semi-dry desulphurization |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109876759A (en) * | 2019-04-09 | 2019-06-14 | 昆山宇顺环保科技有限公司 | Accelerate the method and device of Desulphurization sulfite calcium oxidation using low temperature waste gas |
| CN116328699A (en) * | 2022-12-28 | 2023-06-27 | 安徽盛世新能源材料科技有限公司 | Desulfurization ash treatment device |
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| US20130195728A1 (en) * | 2010-05-14 | 2013-08-01 | Houjie Sun | Wet flue gas desulfurization absorption tower for for power plant |
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| CN109876759A (en) * | 2019-04-09 | 2019-06-14 | 昆山宇顺环保科技有限公司 | Accelerate the method and device of Desulphurization sulfite calcium oxidation using low temperature waste gas |
| CN109876759B (en) * | 2019-04-09 | 2021-07-20 | 昆山宇顺环保科技有限公司 | Method and device for accelerating oxidation of calcium sulfite in desulfurized fly ash by using low-temperature waste gas |
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| CN116328699B (en) * | 2022-12-28 | 2023-11-07 | 安徽盛世新能源材料科技有限公司 | Desulfurization ash treatment device |
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