CN211770333U - Byproduct dilute acid processing apparatus based on active carbon flue gas desulfurization - Google Patents
Byproduct dilute acid processing apparatus based on active carbon flue gas desulfurization Download PDFInfo
- Publication number
- CN211770333U CN211770333U CN202020378057.6U CN202020378057U CN211770333U CN 211770333 U CN211770333 U CN 211770333U CN 202020378057 U CN202020378057 U CN 202020378057U CN 211770333 U CN211770333 U CN 211770333U
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- CN
- China
- Prior art keywords
- dilute acid
- flue gas
- pond
- gas desulfurization
- tank
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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.)
- Expired - Fee Related
Links
- 239000002253 acid Substances 0.000 title claims abstract description 40
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 37
- 230000023556 desulfurization Effects 0.000 title claims abstract description 37
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 35
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 239000003546 flue gas Substances 0.000 title claims abstract description 32
- 239000006227 byproduct Substances 0.000 title claims abstract description 20
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 15
- 239000002351 wastewater Substances 0.000 claims abstract description 34
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 28
- 238000004062 sedimentation Methods 0.000 claims abstract description 24
- 239000012530 fluid Substances 0.000 claims abstract description 23
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 16
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 16
- 239000004571 lime Substances 0.000 claims abstract description 16
- 239000000843 powder Substances 0.000 claims abstract description 13
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 10
- 239000010440 gypsum Substances 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 239000007789 gas Substances 0.000 claims abstract description 6
- 238000010306 acid treatment Methods 0.000 claims description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract description 20
- 238000000034 method Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 5
- 238000000889 atomisation Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000000571 coke Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 2
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 2
- 235000011130 ammonium sulphate Nutrition 0.000 description 2
- 238000004939 coking Methods 0.000 description 2
- 229910017053 inorganic salt Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000001143 conditioned effect Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000014233 sulfur utilization Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Abstract
The utility model discloses a byproduct diluted acid processing apparatus based on active carbon flue gas desulfurization, including the dilute acid pond, the dilute acid pond is connected with the dilute acid pump, and the dilute acid pump is connected with the neutralization pond, and the lime powder storehouse is connected with the push-pull valve, and the push-pull valve is connected with screw feeder, and screw feeder is connected with the neutralization pond, and the neutralization pond is connected with the sedimentation tank, and the sedimentation tank is connected with the wastewater disposal basin, and the wastewater disposal basin is connected with the wastewater disposal pump, and the wastewater disposal pump is connected with the liquid way of two fluid atomizing nozzles, and the compressed air buffer tank is connected with atomizing nozzles's gas circuit, and atomizing nozzles sets up in the flue before the desulfurization, and the neutralization pond underflow is connected with gypsum belt hydroextractor. The utility model discloses a resource utilization of active carbon desulfurization byproduct dilute sulfuric acid provides the advantage for the popularization of active carbon flue gas desulfurization technique.
Description
Technical Field
The utility model belongs to the technical field of the environmental protection, concretely relates to by-product dilute acid processing apparatus based on active carbon flue gas desulfurization.
Background
With the increasing emphasis of the country on environmental protection, the standard emission of the flue gas in the coking field of China is imperative, currently, the environmental protection treatment of the coke oven flue gas enters a key stage, because the coke oven chimney must be in a hot standby state, the flue gas return temperature should not be lower than 130 ℃, the dry active carbon flue gas desulfurization technology becomes a desulfurization technology widely applied to coke oven flue gas, the dry active carbon desulfurization technology utilizes a fixed bed as a desulfurization reaction device, the active carbon is still in the desulfurization process, the flue gas is purified by continuously passing through a bed layer, the active carbon with saturated adsorption is regenerated by water washing to obtain dilute sulfuric acid with certain concentration, because the dilute sulfuric acid contains ferrous sulfate to influence the crystallization of ammonium sulfate, the dilute sulfuric acid can not be used in the ammonium sulfate coking section, the resource utilization of the dilute sulfuric acid is limited, how to treat the desulfurization by-product dilute sulfuric acid to become the problem which needs to be solved for the popularization of the active carbon dry desulfurization technology.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the above-mentioned not enough that prior art exists, provide a by-product dilute acid processing apparatus based on active carbon flue gas desulfurization, not only make sulphur utilization, make the water resource obtain retrieving simultaneously.
The utility model aims at adopting the following technical scheme to realize:
a byproduct diluted acid processing apparatus based on active carbon flue gas desulfurization, including the diluted acid pond, the diluted acid pond is connected with the diluted acid pump, the diluted acid pump is connected with neutralization pond, the lime powder storehouse is connected with screw feeder, lime powder storehouse exit sets up the control valve, screw feeder is connected with neutralization pond, neutralization pond is connected with the sedimentation tank, the sedimentation tank is connected with the wastewater disposal basin, the wastewater disposal basin is connected with the wastewater disposal pump, the wastewater disposal pump is connected with two fluid atomization nozzles, two fluid atomization nozzles are connected with compressed air buffer tank, the sedimentation tank bottom is connected with gypsum belt hydroextractor.
The control valve adopts a gate valve.
The double-fluid atomizing nozzle comprises a gas path and a liquid path, the waste water pump is connected with the liquid path of the double-fluid atomizing nozzle, and the compressed air buffer tank is connected with the gas path of the double-fluid atomizing nozzle.
The neutralization pond is arranged on an on-line pH meter, the on-line pH meter transmits the test result to the pH value controller in the form of a signal, and the pH value controller controls the feeding of the screw feeder.
The two-fluid atomizing nozzle is arranged in the desulfurization front flue.
The top of the sedimentation tank is connected with a wastewater tank through a pipeline. The sedimentation tank overflows into a wastewater tank.
An electric stirrer is arranged in the neutralization tank.
The dilute acid as the desulfurization byproduct is stored in a dilute acid pool, the dilute acid enters a neutralization pool through a dilute acid pump, lime is added into the neutralization pool through a screw feeder by a lime powder bin, the pH value of the dilute acid is adjusted to 8-10, the neutralization pool is provided with an online pH meter, the on-line pH meter transmits the test result to the pH value controller in the form of signal, triggers the set condition, the lime powder bin adds the lime powder through the screw feeder until the set pH value is satisfied, the neutralization tank is provided with an electric stirrer to accelerate the reaction of the dilute acid and the lime, the neutralized dilute acid enters the sedimentation tank, performing solid-liquid separation in a sedimentation tank, conveying the bottom flow of the sedimentation tank to a gypsum belt dehydrator through self-flow to generate gypsum, overflowing the sedimentation tank into a wastewater tank, spraying wastewater in a flue before desulfurization through a two-fluid atomization nozzle, the waste water is evaporated by utilizing the heat of the flue gas, and the inorganic salt is separated out to form particles which enter a subsequent flue gas treatment system along with the flue gas.
The utility model has the advantages that:
1. realizes the resource utilization of the dilute sulfuric acid as the byproduct of the activated carbon desulfurization, and provides favorable conditions for the popularization of the technology.
2. The evaporated steam enters a subsequent desulfurization system, so that the water consumption for regeneration of the activated carbon is reduced.
3. The flue gas temperature is reduced, the flue gas before desulfurization is conditioned, and the water consumption for flue gas conditioning is saved.
Drawings
FIG. 1 is a schematic view of the by-product dilute acid treatment device based on activated carbon flue gas desulfurization;
the system comprises a dilute acid pool 1, a dilute acid pump 2, a neutralization pool 3, an online pH meter 4, a pH value controller 5, a lime powder bin 6, a gate valve 7, a screw feeder 8, a sedimentation tank 9, a wastewater pool 10, a wastewater pump 11, a two-fluid atomizing nozzle 12, a pre-desulfurization flue 13, a compressed air storage tank 14 and a gypsum belt dehydrator 15.
Detailed Description
The present invention will be further explained with reference to fig. 1 and the following embodiments.
A byproduct diluted acid processing apparatus based on active carbon flue gas desulfurization, including dilute acid pond 1, dilute acid pump 2, neutralization pond 3, online pH meter 4, pH value controller 5, lime powder storehouse 6, push-pull valve 7, screw feeder 8, sedimentation tank 9, wastewater disposal basin 10, wastewater pump 11, two fluid atomizing nozzle 12, flue 13, compressed air storage tank 14, gypsum belt hydroextractor 15 before the desulfurization. The dilute acid tank 1 is connected with the dilute acid pump 2, the dilute acid pump 2 is connected with the neutralization pond 3, the lime powder bin 6 is connected with the gate valve 7, the gate valve 7 is connected with the screw feeder 8, the screw feeder 8 is connected with the neutralization pond 3, the neutralization pond 3 is connected with the sedimentation tank 9, the sedimentation tank 9 is connected with the wastewater disposal basin 10, the wastewater disposal basin 10 is connected with the wastewater disposal pump 11, the wastewater disposal pump 11 is connected with the liquid path of the two-fluid atomizing nozzle 12, the compressed air buffer tank 14 is connected with the gas path of the two-fluid atomizing nozzle 12, the two-fluid atomizing nozzle 12 is arranged in the flue 13 before desulfurization, and the bottom flow of the sedimentation tank 9 is connected with the gypsum belt dehydrator 15. The connections shown are all connected by tubing to provide a flow path for the fluid.
Dilute sulfuric acid in a dilute acid tank 1 is derived from a by-product of activated carbon flue gas desulfurization, the concentration of the dilute sulfuric acid is about 5%, the dilute acid in the dilute acid tank 1 enters a neutralization tank 3 through a dilute acid pump 2, the dilute sulfuric acid is neutralized to the pH value of 8-10 by adding lime powder into the neutralization tank 3, the neutralization tank 3 is arranged on an online pH meter 4, the online pH meter 4 transmits a test result to a pH value controller 5 in the form of a signal, a set condition is triggered, lime powder is automatically controlled to be added into the neutralization tank 3 by a screw feeder 8 until the set pH value is met, the neutralization tank 3 is provided with an electric stirrer to accelerate the reaction of the dilute acid and the lime, the neutralized dilute acid enters a sedimentation tank 9 to carry out solid-liquid separation in the sedimentation tank 9, the bottom flow of the sedimentation tank 9 is conveyed to a gypsum belt dehydrator 15 through self-flow to generate gypsum, the sedimentation tank 9 overflows into a wastewater tank 10, a wastewater pump 11 is arranged between the wastewater tank 10 and a two-fluid atomization nozzle 12, the device is used for conveying the waste water to the two-fluid atomizing nozzle 12, the two-fluid atomizing nozzle 12 atomizes and sprays the waste water into the flue 13 before desulfurization by using compressed air, the waste water is evaporated by using the heat of flue gas, and inorganic salt is precipitated to form particles which enter a subsequent flue gas treatment system along with the flue gas.
Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without inventive work are still within the scope of the present invention.
Claims (7)
1. The utility model provides a by-product dilute acid processing apparatus based on active carbon flue gas desulfurization which characterized in that: including dilute acid pond (1), dilute acid pond (1) is connected with dilute acid pump (2), dilute acid pump (2) are connected with neutralization pond (3), lime powder storehouse (6) are connected with screw feeder (8), lime powder storehouse (6) exit sets up the control valve, screw feeder (8) are connected with neutralization pond (3), neutralization pond (3) are connected with sedimentation tank (9), sedimentation tank (9) are connected with wastewater disposal basin (10), wastewater disposal pond (10) are connected with waste water pump (11), waste water pump (11) are connected with two fluid atomizing nozzle (12), two fluid atomizing nozzle (12) are connected with compressed air buffer tank (14), sedimentation tank (9) bottom is connected with gypsum belt hydroextractor (15).
2. The by-product dilute acid treatment device based on activated carbon flue gas desulfurization according to claim 1, characterized in that: the control valve adopts a gate valve (7).
3. The by-product dilute acid treatment device based on activated carbon flue gas desulfurization according to claim 1, characterized in that: the two-fluid atomizing nozzle (12) comprises a gas path and a liquid path, the waste water pump (11) is connected with the liquid path of the two-fluid atomizing nozzle (12), and the compressed air buffer tank (14) is connected with the gas path of the two-fluid atomizing nozzle (12).
4. The by-product dilute acid treatment device based on activated carbon flue gas desulfurization according to claim 1, characterized in that: the neutralization pond (3) is provided with an online pH meter (4), the online pH meter (4) transmits a test result to a pH value controller (5) in a signal form, and the pH value controller (5) controls the feeding of the screw feeder (8).
5. The by-product dilute acid treatment device based on activated carbon flue gas desulfurization according to claim 1, characterized in that: the two-fluid atomizing nozzle (12) is arranged in the desulfurization front flue (13).
6. The by-product dilute acid treatment device based on activated carbon flue gas desulfurization according to claim 1, characterized in that: the top of the sedimentation tank (9) is connected with a wastewater tank (10) through a pipeline.
7. The by-product dilute acid treatment device based on activated carbon flue gas desulfurization according to claim 1, characterized in that: an electric stirrer is arranged in the neutralization tank (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020378057.6U CN211770333U (en) | 2020-03-24 | 2020-03-24 | Byproduct dilute acid processing apparatus based on active carbon flue gas desulfurization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020378057.6U CN211770333U (en) | 2020-03-24 | 2020-03-24 | Byproduct dilute acid processing apparatus based on active carbon flue gas desulfurization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211770333U true CN211770333U (en) | 2020-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020378057.6U Expired - Fee Related CN211770333U (en) | 2020-03-24 | 2020-03-24 | Byproduct dilute acid processing apparatus based on active carbon flue gas desulfurization |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211770333U (en) |
-
2020
- 2020-03-24 CN CN202020378057.6U patent/CN211770333U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201027 |
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| CF01 | Termination of patent right due to non-payment of annual fee |