CN209835671U - Washing water treatment system of desulfurizing tower - Google Patents
Washing water treatment system of desulfurizing tower Download PDFInfo
- Publication number
- CN209835671U CN209835671U CN201920455196.1U CN201920455196U CN209835671U CN 209835671 U CN209835671 U CN 209835671U CN 201920455196 U CN201920455196 U CN 201920455196U CN 209835671 U CN209835671 U CN 209835671U
- Authority
- CN
- China
- Prior art keywords
- sulfuric acid
- water
- concentrated water
- supply unit
- reverse osmosis
- 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.)
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 154
- 238000005406 washing Methods 0.000 title claims abstract description 35
- 230000003009 desulfurizing effect Effects 0.000 title claims abstract description 15
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 132
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 45
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 19
- 230000023556 desulfurization Effects 0.000 claims abstract description 19
- 238000006243 chemical reaction Methods 0.000 claims abstract description 17
- 238000007872 degassing Methods 0.000 claims description 32
- 238000011010 flushing procedure Methods 0.000 claims description 29
- 239000002253 acid Substances 0.000 claims description 6
- 230000032258 transport Effects 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 239000012141 concentrate Substances 0.000 claims 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 3
- 239000003546 flue gas Substances 0.000 abstract description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 12
- 229910002092 carbon dioxide Inorganic materials 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 5
- 239000001569 carbon dioxide Substances 0.000 description 5
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 4
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 4
- 239000013505 freshwater Substances 0.000 description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000002352 surface water Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 229910052925 anhydrite Inorganic materials 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 2
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910000020 calcium bicarbonate Inorganic materials 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 229910000022 magnesium bicarbonate Inorganic materials 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
Abstract
The utility model discloses a sparge water processing system of desulfurizing tower, the desulfurizing tower includes the defroster and installs the defroster about the defroster washes layer, its characterized in that: the washing water treatment system of the desulfurization tower comprises a sulfuric acid supply unit, a concentrated water reverse osmosis concentrated water supply unit, a reaction unit communicated between the sulfuric acid supply unit and the concentrated water reverse osmosis concentrated water supply unit, and a transportation unit communicated between the reaction unit and a demister washing layer, wherein the sulfuric acid supplied by the sulfuric acid supply unit and the concentrated water reverse osmosis concentrated water supplied by the concentrated water reverse osmosis concentrated water supply unit are mixed and fully reacted in the reaction unit to form washing water, and the washing water is transported to the demister washing layer through the transportation unit to wash the demister. The utility model discloses a sparge water processing system of desulfurizing tower can effectively avoid the scale deposit problem that causes when utilizing dense water reverse osmosis dense water to wash wet flue gas desulfurization system.
Description
Technical Field
The utility model relates to a dense water reverse osmosis dense water field of recycling, in particular to sparge water processing system of desulfurizing tower.
Background
The power plant is provided with chemical demineralized water processing system, among the chemical demineralized water processing system, surface water gets into reverse osmosis unit through flocculation, sediment, filtration technology, and reverse osmosis membrane only allows water to pass through, prevents dissolving the passing through of solid (salt), and the water of letting pass through is fresh water, and fresh water gets into the qualified demineralized water of ion exchange system output, prevents that the solid (salt) that dissolves that passes through is detained at the opposite side of membrane, and the water of this side is dense water. The water quantity of the concentrated water is 25% of the total reverse osmosis water inflow, for water saving and emission reduction, 25% of the concentrated water is sent into a concentrated water reverse osmosis device to extract fresh water, the product water of the concentrated water reverse osmosis is fresh water, and the produced concentrated water is concentrated water reverse osmosis.
If the wet desulphurization system is directly washed by the concentrated reverse osmosis water, the wet desulphurization system, especially a demister, can be blocked due to the formation of carbonate scales due to the increase of temperature and evaporation concentration in the desulphurization system, and the safe and stable operation of equipment of the desulphurization system is seriously influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to the above-mentioned defect among the prior art, provide a sparge water processing system of desulfurizing tower, can effectively avoid the scale deposit problem that causes when utilizing dense water reverse osmosis dense water to wash wet flue gas desulfurization system.
In order to realize the purpose of the utility model, the utility model adopts the following technical scheme:
a washing water treatment system of a desulfurizing tower comprises a demister and demister washing layers arranged above and below the demister, wherein the washing water treatment system of the desulfurizing tower comprises a sulfuric acid supply unit, a concentrated water reverse osmosis concentrated water supply unit, a reaction unit communicated between the sulfuric acid supply unit and the concentrated water reverse osmosis concentrated water supply unit and a transportation unit communicated between the reaction unit and the demister washing layers, sulfuric acid supplied by the sulfuric acid supply unit and concentrated water reverse osmosis concentrated water supplied by the concentrated water reverse osmosis concentrated water supply unit are mixed and fully reacted in the reaction unit to form washing water, and the washing water is transported to the demister washing layers through the transportation unit to wash the demister.
Furthermore, the utility model discloses still include following subsidiary technical scheme:
the reaction unit comprises a pipeline mixer and a degassing tower, wherein the pipeline mixer is communicated between the sulfuric acid supply unit and the concentrated water reverse osmosis concentrated water supply unit, and the degassing tower is communicated between the pipeline mixer and the transportation unit.
And the sulfuric acid and the concentrated water reverse osmosis concentrated water are uniformly mixed in the pipeline mixer and begin to react.
The sulfuric acid and the concentrated water reverse osmosis concentrated water are fully reacted in the degassing tower to form flushing water and gas.
And a degassing fan is arranged on the degassing tower, and the gas is discharged out of the degassing tower through the degassing fan.
The transportation unit comprises a flushing water tank communicated between the demister washing layer and the degassing tower, a flushing water lifting pump is installed between the degassing tower and the flushing water tank, and a demister flushing water pump is installed between the flushing water tank and the demister washing layer.
The sulfuric acid supply unit comprises a sulfuric acid storage tank communicated with the pipeline mixer, a metering tank is arranged between the sulfuric acid storage tank and the pipeline mixer, and a metering pump is arranged between the metering tank and the pipeline mixer.
An online pH meter is arranged between the degassing tower and the transportation unit, the pH value of the flushing water is controlled within the range of 6-7, and the metering pump adjusts the liquid amount of the added sulfuric acid according to the online pH meter.
The sulfuric acid supply unit also comprises a sulfuric acid tank wagon communicated with the sulfuric acid storage tank, an acid discharge pump is arranged between the sulfuric acid storage tank and the sulfuric acid tank wagon, and the sulfuric acid tank wagon transports sulfuric acid into the sulfuric acid storage tank through the acid discharge pump.
Compared with the prior art, the utility model discloses the advantage lies in: substances which are easy to scale, such as carbonate, bicarbonate and the like in the concentrated water reverse osmosis concentrated water are converted into sulfate, water and carbon dioxide, so that the scaling problem caused when the concentrated water reverse osmosis concentrated water is used for washing a wet desulphurization system can be effectively avoided, the problem of pressure difference rise caused after a desulphurization demister scales is further avoided, and the safe and stable operation of equipment is ensured; the current situation that the direct discharge of the concentrated water of the reverse osmosis of the concentrated water does not reach the standard is solved, the using amount of surface water is reduced, the utilization of water resources is saved, and the zero discharge of the reverse osmosis of the concentrated water is realized.
Drawings
Fig. 1 is a schematic structural diagram of a washing water treatment system of a desulfurizing tower of the present invention.
Detailed Description
The following non-limiting detailed description of the present invention is provided in connection with the preferred embodiments and accompanying drawings.
As shown in fig. 1, a desulfurization tower 8 includes a demister 1 and a demister washing layer 2 installed above and below the demister 1, the flow direction of liquid in the desulfurization tower washing water treatment system is shown by arrows in fig. 1, the desulfurization tower washing water treatment system includes a sulfuric acid supply unit 3 and a concentrated water reverse osmosis concentrated water supply unit 4, the reaction unit 5 is communicated between the sulfuric acid supply unit 3 and the concentrated water reverse osmosis concentrated water supply unit 4, the transportation unit 6 is communicated between the reaction unit 5 and the demister washing layer 2, sulfuric acid supplied by the sulfuric acid supply unit 3 and concentrated water reverse osmosis concentrated water supplied by the concentrated water reverse osmosis concentrated water supply unit 4 are mixed and fully reacted in the reaction unit 5 to form washing water, and the washing water is transported to the demister washing layer 2 through the transportation unit 6 to wash the demister 1.
Wherein the reaction unit 5 comprises a pipeline mixer 51 and a degassing tower 52, the pipeline mixer 51 is communicated between the sulfuric acid supply unit 3 and the concentrated water reverse osmosis concentrated water supply unit 4, and the degassing tower 52 is communicated between the pipeline mixer 51 and the transportation unit 6. Specifically, the sulfuric acid supply unit 3 includes a sulfuric acid storage tank 31 communicating with the line mixer 51 and a sulfuric acid tank wagon 34 communicating with the sulfuric acid storage tank 31, a metering tank 32 is installed between the sulfuric acid storage tank 31 and the line mixer 51, and a metering pump 33 is installed between the metering tank 32 and the line mixer 51. An acid discharge pump 35 is arranged between the sulfuric acid storage tank 31 and the sulfuric acid tank wagon 34, the sulfuric acid tank wagon 34 transports sulfuric acid into the sulfuric acid storage tank 31 through the acid discharge pump 35, the sulfuric acid in the sulfuric acid storage tank 31 automatically flows into the metering box 32 and is sent into the pipeline mixer 51 through the metering pump 33, the sulfuric acid and the concentrated reverse osmosis water are uniformly mixed in the pipeline mixer 51 and begin to react, and carbonate and bicarbonate in the concentrated reverse osmosis water begin to react with the sulfuric acid, specifically, the reaction is as follows:
CaCO3+H2SO4＝CaSO4+H2O+CO2↑；
Ca(HCO3)2+H2SO4＝CaSO4+2H2O+2CO2↑；
MgCO3+H2SO4＝MgSO4+H2O+CO2↑；
Mg(HCO3)2+H2SO4＝MgSO4+2H2O+2CO2↑；
further, the sulfuric acid and the concentrated water reverse osmosis concentrated water which start to react enter the degassing tower 52, and the degassing tower 52 is provided with a filler, so that the sulfuric acid and the concentrated water reverse osmosis concentrated water fully react in the degassing tower 52 to form flushing water and gas, wherein the flushing water mainly comprises sulfate and water, and the gas is mainly carbon dioxide. The degassing fan 521 is installed on the degassing tower 52, and the carbon dioxide gas is discharged to the outside of the degassing tower 52 through the degassing fan 521, so that the content of the carbon dioxide gas in the degassing tower 52 is reduced to below 5 mg/L. An on-line pH meter 7 is installed between the degassing tower 52 and the transport unit 6, the pH value of the washing water is controlled within the range of 6-7, and the metering pump 33 can adjust the amount of the sulfuric acid added according to the on-line pH meter 7.
The transportation unit 6 comprises a flushing water tank 61 communicated between a demister flushing layer 2 and a degassing tower 52, a flushing water lifting pump 62 is installed between the degassing tower 52 and the flushing water tank 61, flushing water enters the flushing water tank 61 through the flushing water lifting pump 62 to be stored, a demister flushing water pump 63 is installed between the flushing water tank 61 and the demister flushing layer 2, the flushing water is transported to the demister flushing layer 2 through the demister flushing water pump 63, the demister 1 is flushed, the flushing water falls into slurry of the desulfurizing tower 8 after being flushed, and sulfate in the flushing water and sulfate formed by desulfurization in the desulfurizing tower 8 are crystallized together to form gypsum.
Furthermore, the washing water treatment operation of the whole desulfurization tower is automatically controlled and can be controlled by a PLC or a DCS.
The utility model discloses a sparge water processing system of desulfurizing tower, turn into sulfate, water and carbon dioxide with the easy scale deposit's such as carbonate, bicarbonate in the dense water reverse osmosis dense water, can effectively avoid the scale deposit problem that causes when utilizing dense water reverse osmosis dense water to wash wet flue gas desulfurization system, and then avoided the pressure differential rising problem that causes after the scale deposit of desulfurization defroster, guaranteed the safe, the steady operation of equipment; the current situation that the direct discharge of the concentrated water of the reverse osmosis of the concentrated water does not reach the standard is solved, the using amount of surface water is reduced, the utilization of water resources is saved, and the zero discharge of the reverse osmosis of the concentrated water is realized.
It should be noted that the above-mentioned preferred embodiments are only for illustrating the technical concepts and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention accordingly, and the protection scope of the present invention cannot be limited thereby. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (9)
1. The utility model provides a sparge water processing system of desulfurizing tower, desulfurizing tower (8) include defroster (1) and install the defroster about defroster (1) washes layer (2), its characterized in that: the washing water treatment system of the desulfurization tower comprises a sulfuric acid supply unit (3), a concentrated water reverse osmosis concentrated water supply unit (4), a reaction unit (5) communicated between the sulfuric acid supply unit (3) and the concentrated water reverse osmosis concentrated water supply unit (4), and a transportation unit (6) communicated between the reaction unit (5) and the demister washing layer (2), wherein sulfuric acid supplied by the sulfuric acid supply unit (3) and concentrated water reverse osmosis concentrated water supplied by the concentrated water reverse osmosis concentrated water supply unit (4) are mixed and fully reacted in the reaction unit (5) to form washing water, and the washing water is transported to the demister washing layer (2) through the transportation unit (6) to wash the demister (1).
2. The desulfurization tower rinse water treatment system of claim 1, wherein: the reaction unit (5) comprises a pipeline mixer (51) and a degassing tower (52), wherein the pipeline mixer (51) is communicated between the sulfuric acid supply unit (3) and the concentrated water reverse osmosis concentrated water supply unit (4), and the degassing tower (52) is communicated between the pipeline mixer (51) and the transportation unit (6).
3. The desulfurization tower rinse water treatment system of claim 2, wherein: the sulfuric acid and the concentrated water reverse osmosis concentrated water are uniformly mixed in the pipeline mixer (51) and the reaction begins to occur.
4. The desulfurization tower rinse water treatment system of claim 3, wherein: the sulfuric acid reacts with the concentrate reverse osmosis concentrate in the degasser (52) sufficiently to form rinse water and gas.
5. The desulfurization tower rinse water treatment system of claim 4, wherein: a degassing fan (521) is installed on the degassing tower (52), and the gas is discharged out of the degassing tower (52) through the degassing fan (521).
6. The desulfurization tower rinse water treatment system of claim 2, wherein: the transportation unit (6) comprises a flushing water tank (61) communicated between the demister washing layer (2) and the degassing tower (52), a flushing water lifting pump (62) is installed between the degassing tower (52) and the flushing water tank (61), and a demister flushing water pump (63) is installed between the flushing water tank (61) and the demister washing layer (2).
7. The desulfurization tower rinse water treatment system of claim 2, wherein: the sulfuric acid supply unit (3) comprises a sulfuric acid storage tank (31) communicated with the pipeline mixer (51), a metering tank (32) is installed between the sulfuric acid storage tank (31) and the pipeline mixer (51), and a metering pump (33) is installed between the metering tank (32) and the pipeline mixer (51).
8. The desulfurization tower rinse water treatment system of claim 7, wherein: an online pH meter (7) is arranged between the degassing tower (52) and the transportation unit (6), the pH value of the washing water is controlled within the range of 6-7, and the metering pump (33) adjusts the liquid amount of the added sulfuric acid according to the online pH meter (7).
9. The desulfurization tower rinse water treatment system of claim 7, wherein: the sulfuric acid supply unit (3) further comprises a sulfuric acid tank wagon (34) communicated with the sulfuric acid storage tank (31), an acid unloading pump (35) is arranged between the sulfuric acid storage tank (31) and the sulfuric acid tank wagon (34), and the sulfuric acid tank wagon (34) transports sulfuric acid into the sulfuric acid storage tank (31) through the acid unloading pump (35).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920455196.1U CN209835671U (en) | 2019-04-04 | 2019-04-04 | Washing water treatment system of desulfurizing tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920455196.1U CN209835671U (en) | 2019-04-04 | 2019-04-04 | Washing water treatment system of desulfurizing tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209835671U true CN209835671U (en) | 2019-12-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920455196.1U Expired - Fee Related CN209835671U (en) | 2019-04-04 | 2019-04-04 | Washing water treatment system of desulfurizing tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209835671U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109911959A (en) * | 2019-04-04 | 2019-06-21 | 聊城信源集团有限公司 | A kind of flushing water treatment system of desulfurizing tower |
-
2019
- 2019-04-04 CN CN201920455196.1U patent/CN209835671U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109911959A (en) * | 2019-04-04 | 2019-06-21 | 聊城信源集团有限公司 | A kind of flushing water treatment system of desulfurizing tower |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191224 |