CN206262349U - The fume desulfurizing agent regenerating unit of containing sodium carbonate - Google Patents
The fume desulfurizing agent regenerating unit of containing sodium carbonate Download PDFInfo
- Publication number
- CN206262349U CN206262349U CN201621354410.7U CN201621354410U CN206262349U CN 206262349 U CN206262349 U CN 206262349U CN 201621354410 U CN201621354410 U CN 201621354410U CN 206262349 U CN206262349 U CN 206262349U
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- CN
- China
- Prior art keywords
- sodium carbonate
- feeder
- softening box
- carbon dioxide
- desulfurizing agent
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Abstract
The utility model discloses a kind of fume desulfurizing agent regenerating unit of containing sodium carbonate, including calcium hydroxide feeder, desulfurizer regeneration pond, Softening box, carbon dioxide feeder, settling tank and clear liquid case.Desulfurizer regeneration pond is used to receiving carries out the desulfurization rear slurry that is formed after flue gas desulfurization and calcium hydroxide from calcium hydroxide feeder using the fume desulfurizing agent of containing sodium carbonate, and desulfurization rear slurry is converted into sodium hydroxide slurry；Softening box is connected by pipeline with desulfurizer regeneration pond, for receiving the sodium hydroxide slurry from desulfurizer regeneration pond and the carbon dioxide from carbon dioxide feeder, and sodium hydroxide slurry is converted into sodium carbonate slurries；Settling tank is connected by pipeline with the Softening box, the fume desulfurizing agent for the sodium carbonate slurries to be separated into sediment and containing sodium carbonate；Clear liquid case is used to receive the fume desulfurizing agent of the containing sodium carbonate from settling tank.Device of the present utility model can significantly reduce calcium ion in the desulfurization slurry after regeneration, it is ensured that the normal operation of Dual-alkali smoke desulfurization device.
Description
Technical field
The utility model is related to a kind of fume desulfurizing agent regenerating unit, and especially a kind of fume desulfurizing agent of containing sodium carbonate is again
Generating apparatus.
Background technology
At present, flue gas desulfurization device major part uses desulfurization method of limestone-gypsum, with calcium-based desulfurizing agent absorption flue gas
Sulfur dioxide, and then generate calcium sulfite and calcium sulfate.Because the solubility of calcium sulfite and calcium sulfate is smaller, easily in flue gas
Fouling and blocking are formed in the desulfurizing tower and pipeline of desulfurizer, and produces erosion corrosion phenomenon.
In order to overcome the shortcoming of the easy fouling and clogging of limestone-gypsum method flue gas desulfurization device, erosion corrosion, gradually develop
Go out Dual-alkali smoke desulfurization device.The device carries out desulfurization in tower using sodium base desulfurizer, and sodium base desulfurizer is absorbed in flue gas
Sulfur dioxide, the product solubility of formation is big, does not result in supersaturated crystallization, does not have fouling and clogging problem.The device is produced
Raw desulfurization product is discharged into regenerated reactor and carries out reducing/regenerating with calcium hydroxide, and the sodium base desulfurizer for regenerating is returned de- again
Sulphur tower is recycled.Because, containing a large amount of unreacted calcium ions, these calcium ions are in equipment pipe in the desulfurization slurry after regeneration
Can be precipitated in road and desulfurizing tower, extremely easy fouling and clogging, so as to have a strong impact on the normal of Dual-alkali smoke desulfurization device
Operation.
Utility model content
In view of this, the purpose of this utility model is the fume desulfurizing agent regenerating unit for providing a kind of containing sodium carbonate, its
The calcium ion in the desulfurization slurry after regeneration can be significantly reduced, so as to avoid fouling and clogging phenomenon, it is ensured that Dual alkali flue gas takes off
The normal operation of sulphur device.
The utility model provides a kind of fume desulfurizing agent regenerating unit of containing sodium carbonate, and described device includes calcium hydroxide
Feeder, desulfurizer regeneration pond, Softening box, carbon dioxide feeder, settling tank and clear liquid case；
The calcium hydroxide feeder is used to supply calcium hydroxide to the desulfurizer regeneration pond；
The fume desulfurizing agent that the desulfurizer regeneration pond is used to receive the use containing sodium carbonate from flue gas desulfurization device enters
The desulfurization rear slurry formed after row flue gas desulfurization and the calcium hydroxide from the calcium hydroxide feeder, and will be starched after the desulfurization
Liquid is converted into sodium hydroxide slurry in the presence of calcium hydroxide；
The Softening box is connected by pipeline with the desulfurizer regeneration pond, and it is used to receive from the desulfurizer regeneration
The sodium hydroxide slurry in pond and the carbon dioxide from the carbon dioxide feeder, the sodium hydroxide slurry is in carbon dioxide
In the presence of formed insoluble matter and sodium carbonate slurries；
The carbon dioxide feeder is used to supply carbon dioxide to the Softening box；
The settling tank is connected by pipeline with the Softening box, and it is used to receive the sodium carbonate slurry from the Softening box
Liquid, so as to the sodium carbonate slurries to be separated into the fume desulfurizing agent of sediment and containing sodium carbonate；With
The clear liquid case is used to receive the fume desulfurizing agent of the containing sodium carbonate from the settling tank.
In the utility model, calcium hydroxide feeder can be connected by pipeline with desulfurizer regeneration pond.Preferably,
Regulating valve is provided with pipeline between calcium hydroxide feeder and desulfurizer regeneration pond, for adjusting calcium hydroxide flow.
In the utility model, desulfurizer regeneration pond is used to receive the cigarette of the use containing sodium carbonate from flue gas desulfurization device
Gas desulfurizer carries out the desulfurization rear slurry and the calcium hydroxide from calcium hydroxide feeder of flue gas desulfurization formation, and by the desulfurization
Rear slurry is converted into sodium hydroxide slurry in the presence of calcium hydroxide.Flue gas desulfurization device of the present utility model does not have especially
Limitation, such as desulfurizing tower.The fume desulfurizing agent of containing sodium carbonate reacts to form sodium sulfite with the sulfur dioxide in flue gas, so that
Flue gas after to purification.There are a large amount of sodium sulfites in desulfurization rear slurry, it forms NaOH and Asia with calcium hydroxide reaction
Calcium sulfate precipitation, so as to form sodium hydroxide slurry.
According to device of the present utility model, it is preferable that described device also includes sodium hydroxide slurry pump, and it is arranged on institute
State on the pipeline between desulfurizer regeneration pond and the Softening box, for the sodium hydroxide slurry to be delivered into the Softening box.
In the utility model, Softening box is connected by pipeline with desulfurizer regeneration pond, and it is used to receive from desulfurizing agent
The sodium hydroxide slurry of regenerated reactor and the carbon dioxide from carbon dioxide feeder.Sodium hydroxide slurry and carbon dioxide reaction
Form insoluble matter and sodium carbonate slurries.The insoluble matter includes the sulfurous carried in newly-generated calcium carbonate and sodium hydroxide slurry
Sour calcium etc..Preferably, the bottom of Softening box is provided with insoluble matter outlet, for these insoluble matters to be discharged；Softening box
Top is provided with sodium carbonate slurry discharge ports, for the sodium carbonate slurries to be expelled in settling tank.May be used also at the top of Softening box
To be provided with sodium hydroxide slurry entrance, it is connected with sodium hydroxide slurry pump.
In the utility model, carbon dioxide feeder is used to supply carbon dioxide to Softening box.According to the utility model
Device, it is preferable that the carbon dioxide feeder be used for receive the purification from the flue gas desulfurization device after flue gas.By
Contain great amount of carbon dioxide in the flue gas after purification, as reactant add in the Softening box with sodium hydroxide slurry
Reaction.The cost of material of carbon dioxide was so both saved, waste gas discharge had been reduced again.
According to device of the present utility model, it is preferable that the top of the Softening box is provided with gas access and gas vent,
The gas access is connected with the carbon dioxide feeder, and the gas vent is used to discharge unreacted gas.Not anti-
In the gas answered, the content of carbon dioxide will be substantially reduced, and further function as the effect of purifying smoke.
According to device of the present utility model, it is preferable that the Softening box is internally provided with gas distributor, for promoting
Gas-liquid two-phase reacts.Gas distributor has loose structure, so as to carbon dioxide is evenly dispersed in sodium hydroxide slurry,
So as to promote gas-liquid two-phase to react.
According to device of the present utility model, it is preferable that described device also includes defoamer feeder, and it is used for described
Softening box supplies defoamer.Carbon dioxide can produce a large amount of bubbles with sodium hydroxide slurry reaction, and then influence reaction process.Disappear
Infusion can effectively remove bubble, promote reaction to be smoothed out.
In the utility model, settling tank is connected by pipeline with Softening box, and it is used to receive the carbonic acid from Softening box
Sodium slurries, so as to sodium carbonate slurries to be separated into the fume desulfurizing agent of sediment and containing sodium carbonate.The sediment includes but does not limit
In calcium carbonate, calcium sulfite etc..According to device of the present utility model, it is preferable that described device also includes flocculant feeder,
It is used to supply flocculant to the settling tank.The addition of flocculant can ensure settling velocity and sedimentation effect.
According to device of the present utility model, it is preferable that described device also includes dehydrator, and it passes through pipeline and Softening box
Connection, for receiving the insoluble matter from the Softening box.According to device of the present utility model, it is highly preferred that dehydrator also leads to
Cross pipeline to be connected with settling tank, for receiving the sediment from settling tank.Insoluble matter and sediment are as previously described；By dehydration
The dewater treatment of device obtains industry byproduct.
In the utility model, clear liquid case is used to receive the fume desulfurizing agent of the containing sodium carbonate from settling tank.According to this
The device of utility model, it is preferable that described device also includes regeneration slurry circulating pump, and it is used for from the carbon containing of clear liquid case
The fume desulfurizing agent of sour sodium is pumped to flue gas desulfurization device.
Device of the present utility model can regenerate the fume desulfurizing agent of containing sodium carbonate, and recycle.The utility model
Device by desulfurization rear slurry by regenerated reactor, Softening box etc. process, significantly reduce the calcium ion concentration in slurries, it is to avoid
Fouling and clogging, so as to ensure the normal operation of Dual-alkali smoke desulfurization device.According to the preferred technology originating party case of the utility model,
It had both saved carbon dioxide cost of material using the carbon dioxide in the flue gas after purification, and waste gas discharge is reduced again.
Brief description of the drawings
Fig. 1 is fume desulfurizing agent regenerating unit schematic diagram of the present utility model.
Description of reference numerals is as follows：
1- calcium hydroxide feeders, 2- desulfurizer regenerations pond, 3- sodium hydroxide slurry pumps, 4- Softening boxs, 5- defoamers are supplied
To device, 6- settling tanks, 7- flocculant feeders, 8- clear liquid casees, 9- regeneration slurry circulating pumps, 10- dehydrators.
Specific embodiment
The utility model is further described with reference to specific embodiment, but protection domain of the present utility model is simultaneously
Not limited to this.
Embodiment 1
Fig. 1 is fume desulfurizing agent regenerating unit of the present utility model.As seen from the figure, the device includes calcium hydroxide feeder
1st, desulfurizer regeneration pond 2, Softening box 4, carbon dioxide feeder 5, settling tank 6 and clear liquid case 8.Calcium hydroxide feeder 1 is used for
Calcium hydroxide is supplied to desulfurizer regeneration pond 2.Desulfurizer regeneration pond 2 receives the use from flue gas desulfurization device (not shown) and contains
The fume desulfurizing agent of sodium carbonate carries out the desulfurization rear slurry formed after flue gas desulfurization and the hydroxide from calcium hydroxide feeder 1
Calcium.In desulfurizer regeneration pond 2, the material such as sodium sulfite of desulfurization rear slurry and calcium hydroxide reaction, so as to form hydroxide
Sodium slurries.
Softening box 4 is connected by pipeline with desulfurizer regeneration pond 2, for receiving sodium hydroxide slurry；Therebetween pipe
Sodium hydroxide slurry pump 3 is provided with line, for sodium hydroxide slurry to be delivered into Softening box 4.
The top of Softening box 4 is provided with sodium hydroxide slurry entrance, defoamer entrance and gas access and gas vent.Hydrogen
Sodium oxide molybdena injection point is connected with sodium hydroxide slurry pump 3 by pipeline, for importing the hydroxide from desulfurizer regeneration pond 2
Sodium slurries.Gas access connects with carbon dioxide feeder 5, for importing in the flue gas after the purification from flue gas desulfurization device
Carbon dioxide.Gas vent is used to discharge unreacted gas.Defoamer entrance is connected with defoamer feeder 11, for
Defoamer is supplied in Softening box 4.
In Softening box 4, sodium hydroxide slurry forms insoluble matter and sodium carbonate slurries with carbon dioxide reaction.Softening box 4
The gas distributor (not shown) being internally provided with loose structure, for promoting gas-liquid two-phase to react.Disappear due to adding
Infusion, it is therefore prevented that a large amount of bubbles are produced in Softening box 4.NaOH in sodium hydroxide slurry forms carbon with carbon dioxide reaction
Sour sodium.Sodium hydroxide slurry contains unreacted calcium ion, and it forms precipitation of calcium carbonate with carbon dioxide reaction.Additionally, hydrogen-oxygen
Change sodium slurries also to be precipitated containing calcium sulfite.Therefore, above-mentioned insoluble matter includes but is not limited to precipitation of calcium carbonate and calcium sulfite is heavy
Form sediment.The bottom of Softening box 4 is provided with insoluble matter outlet, for insoluble matter to be expelled into dehydrator 10.
The top of Softening box 4 is provided with sodium carbonate slurry discharge ports, and it passes through pipeline and is connected with settling tank 6.Settling tank 6 connects
Receive the sodium carbonate slurries from Softening box 4.The top of settling tank 6 is provided with flocculant entrance, and it is connected with flocculant feeder 7
Connect, for importing flocculant.In settling tank 6, in the presence of flocculant, sodium carbonate slurries be separated rapidly after interaction with the target molecules as sediment and
The fume desulfurizing agent of containing sodium carbonate.Contain calcium carbonate and calcium sulfite etc. in the sediment.The containing sodium carbonate that settling tank 6 is formed
Fume desulfurizing agent is sent to clear liquid case 8.
The device also includes dehydrator 10, and it passes through pipeline and be connected with Softening box 4 and settling tank 6 respectively, is respectively used to
Receive the sediment of insoluble matter and settling tank 6 from Softening box 4.The device also includes regeneration slurry circulating pump 9, will be from clear
The fume desulfurizing agent of the containing sodium carbonate of liquid case 8 delivers to flue gas desulfurization device.
By after device treatment, the calcium ion concentration in the fume desulfurizing agent of containing sodium carbonate can drop from more than 800ppm
As little as 50ppm.
The utility model is not limited to above-mentioned implementation method, in the case of without departing substantially from substance of the present utility model,
It may occur to persons skilled in the art that any deformation, improvement, replacement each fall within scope of the present utility model.
Claims (10)
1. the fume desulfurizing agent regenerating unit of a kind of containing sodium carbonate, it is characterised in that described device includes calcium hydroxide supply
Device, desulfurizer regeneration pond, Softening box, carbon dioxide feeder, settling tank and clear liquid case；
The calcium hydroxide feeder is used to supply calcium hydroxide to the desulfurizer regeneration pond；
The fume desulfurizing agent that the desulfurizer regeneration pond is used to receive the use containing sodium carbonate from flue gas desulfurization device carries out cigarette
The desulfurization rear slurry formed after desulfurization and the calcium hydroxide from the calcium hydroxide feeder, and the desulfurization rear slurry is existed
Sodium hydroxide slurry is converted into the presence of calcium hydroxide；
The Softening box is connected by pipeline with the desulfurizer regeneration pond, and it is used to receive from the desulfurizer regeneration pond
Sodium hydroxide slurry and the carbon dioxide from the carbon dioxide feeder, work of the sodium hydroxide slurry in carbon dioxide
With lower formation insoluble matter and sodium carbonate slurries；
The carbon dioxide feeder is used to supply carbon dioxide to the Softening box；
The settling tank is connected by pipeline with the Softening box, and it is used to receive the sodium carbonate slurries from the Softening box,
So as to the sodium carbonate slurries to be separated into the fume desulfurizing agent of sediment and containing sodium carbonate；With
The clear liquid case is used to receive the fume desulfurizing agent of the containing sodium carbonate from the settling tank.
2. device according to claim 1, it is characterised in that described device also includes sodium hydroxide slurry pump, and it sets
Put on the pipeline between the desulfurizer regeneration pond and the Softening box, it is described soft for the sodium hydroxide slurry to be delivered to
Change case.
3. device according to claim 1, it is characterised in that the carbon dioxide feeder is used to receive and comes from the cigarette
Flue gas after the purification of desulfurization equipment.
4. device according to claim 1, it is characterised in that the Softening box is internally provided with for promoting gas-liquid two
The gas distributor of phase reaction.
5. device according to claim 1, it is characterised in that the top of the Softening box is provided with gas access and gas
Outlet, the gas access is connected with the carbon dioxide feeder, and the gas vent is used to discharge unreacted gas.
6. device according to claim 1, it is characterised in that described device also includes defoamer feeder, and it is used for
Defoamer is supplied to the Softening box.
7. device according to claim 1, it is characterised in that described device also includes flocculant feeder, and it is used for
Flocculant is supplied to the settling tank.
8. device according to claim 1, it is characterised in that described device also includes dehydrator, its pass through pipeline with
The Softening box connection, for receiving the insoluble matter from the Softening box.
9. device according to claim 8, it is characterised in that the dehydrator is also connected by pipeline with the settling tank
Connect, for receiving the sediment from the settling tank.
10. the device according to any one of claim 1~9, it is characterised in that described device also includes that regeneration slurries are followed
Ring pump, it is used to for the fume desulfurizing agent of the containing sodium carbonate from the clear liquid case to be pumped to the flue gas desulfurization device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621354410.7U CN206262349U (en) | 2016-12-09 | 2016-12-09 | The fume desulfurizing agent regenerating unit of containing sodium carbonate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621354410.7U CN206262349U (en) | 2016-12-09 | 2016-12-09 | The fume desulfurizing agent regenerating unit of containing sodium carbonate |
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| Publication Number | Publication Date |
|---|---|
| CN206262349U true CN206262349U (en) | 2017-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621354410.7U Expired - Fee Related CN206262349U (en) | 2016-12-09 | 2016-12-09 | The fume desulfurizing agent regenerating unit of containing sodium carbonate |
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| CN (1) | CN206262349U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110467952A (en) * | 2019-08-07 | 2019-11-19 | 安徽海德化工科技有限公司 | A kind of preparation method of liquefied petroleum gas oxidation desulfurizing agent |
| CN111330316A (en) * | 2020-03-19 | 2020-06-26 | 陕西页川电力科技有限公司 | Thermal power plant limestone-wet flue gas desulfurization defoaming method based on desulfurization defoaming agent |
-
2016
- 2016-12-09 CN CN201621354410.7U patent/CN206262349U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110467952A (en) * | 2019-08-07 | 2019-11-19 | 安徽海德化工科技有限公司 | A kind of preparation method of liquefied petroleum gas oxidation desulfurizing agent |
| CN111330316A (en) * | 2020-03-19 | 2020-06-26 | 陕西页川电力科技有限公司 | Thermal power plant limestone-wet flue gas desulfurization defoaming method based on desulfurization defoaming agent |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yang Xinshun Inventor after: Jin Ying Inventor after: Gong Dongqi Inventor after: Liu Shuang Inventor before: Yang Xinshun Inventor before: Jin Ying Inventor before: Gong Dongqi |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170620 Termination date: 20211209 |