CN104016535A - Device and method for reducing contents of CL<-> and F<-> ions - Google Patents
Device and method for reducing contents of CL<-> and F<-> ions Download PDFInfo
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- CN104016535A CN104016535A CN201410267059.7A CN201410267059A CN104016535A CN 104016535 A CN104016535 A CN 104016535A CN 201410267059 A CN201410267059 A CN 201410267059A CN 104016535 A CN104016535 A CN 104016535A
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- ammonium sulfate
- content
- centrate
- condensing cooling
- secondary vapour
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 150000002500 ions Chemical class 0.000 title abstract 5
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims abstract description 61
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims abstract description 61
- 235000011130 ammonium sulphate Nutrition 0.000 claims abstract description 61
- 238000001816 cooling Methods 0.000 claims abstract description 41
- 239000007787 solid Substances 0.000 claims abstract description 40
- 239000003337 fertilizer Substances 0.000 claims abstract description 35
- 239000002002 slurry Substances 0.000 claims abstract description 16
- 238000001914 filtration Methods 0.000 claims abstract description 14
- 238000001704 evaporation Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 238000007738 vacuum evaporation Methods 0.000 claims description 18
- 238000006477 desulfuration reaction Methods 0.000 claims description 17
- 238000009833 condensation Methods 0.000 claims description 9
- 230000005494 condensation Effects 0.000 claims description 9
- 238000002425 crystallisation Methods 0.000 claims description 9
- 230000008025 crystallization Effects 0.000 claims description 9
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 7
- LDDQLRUQCUTJBB-UHFFFAOYSA-N ammonium fluoride Chemical compound [NH4+].[F-] LDDQLRUQCUTJBB-UHFFFAOYSA-N 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 6
- 230000008020 evaporation Effects 0.000 claims description 5
- 239000002826 coolant Substances 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract description 16
- 229910021529 ammonia Inorganic materials 0.000 abstract description 8
- 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
- 238000001035 drying Methods 0.000 abstract 2
- 238000007599 discharging Methods 0.000 abstract 1
- 239000000047 product Substances 0.000 description 16
- 230000023556 desulfurization Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- HIVLDXAAFGCOFU-UHFFFAOYSA-N ammonium hydrosulfide Chemical compound [NH4+].[SH-] HIVLDXAAFGCOFU-UHFFFAOYSA-N 0.000 description 3
- 230000003009 desulfurizing effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 2
- 235000019628 coolness Nutrition 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005373 pervaporation Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Landscapes
- Fertilizers (AREA)
Abstract
The invention discloses a device and method for reducing the contents of CL<-> and F<-> ions and belongs to the technical field of flue gas ammonia-based desulphurization. The method for reducing the contents of CL<-> and F<-> ions comprises the steps of firstly, separating solid ammonium sulfate from the multi-effect vacuum evaporated and crystallized slurry in a centrifuge to obtain a centrifuged and separated solution; secondly, further evaporating the centrifuged and separated solution and drying to obtain an ammonium sulfate fertilizer product; thirdly, collecting the ammonium sulfate fertilizer product; fourthly, further evaporating the centrifuged and separated solution and drying to produce secondary steam with ammonium sulfate, and filtering secondary steam; fifthly, condensing the filtered secondary steam and cooling; and sixthly, discharging the cooled and condensed secondary steam to a desulphurization tower. By virtue of the method for reducing the contents of CL<-> and F<-> ions, the concentrations of CL<-> and F<-> ions in the ammonia-based desulphurization ammonium sulfate slurry can be efficiently reduced.
Description
Technical field
The present invention relates to flue gas ammonia method desulfurizing technical field, particularly a kind of device and method that reduces CL-, F-ion content.
Background technology
Ammonia type flue gas desulfurizing technology has the common features such as recycling economy, desulfuration efficiency is high, by-product value is high.But ammonia desulfurizing process also exists some problems that perplex all the time the whole industry, one of them is exactly the etching problem of equipment, pipeline etc.
Desulfurization slurry enters after evaporation and crystallization system, through pervaporation, concentrated, eddy flow, centrifugation, go out solid ammonium sulfate product, moisture about 3-5% in the solid ammonium sulfate that centrifugation goes out, can take away part CL-, F-ion, but most of CL-, F-ion, again along with parting liquid turns back to crystal system, after these materials are enriched in slurries, form extremely strong corrosive medium, under equilibrium state, in slurries, CL-, F-ionic concn can reach 100000mg/L and more than 20000mg/L.So the slurries in evaporation and crystallization system have extremely strong corrodibility, and general 316L material also can only be used below CL-ion content 20000mg/L.Prior art is to adopt the class that improves constantly equipment material, in low-temperature zone, uses 316L, at middle-temperature section, uses 2205 dual phase steels, uses 2507 dual phase steels or titanium material etc., but increased like this production cost in high temperature section.
Summary of the invention
Technical problem to be solved by this invention is to provide and a kind ofly can reduces efficiently the CL-in ammonia process of desulfurization sulphur ammonium slurries, the method for F-ionic concn.
For solving the problems of the technologies described above, a kind of method that the invention provides CL-of reduction, F-ion content, comprises the following steps step 1, through the slurries of multiple-effect vacuum evaporative crystallization, in whizzer, isolate after solid ammonium sulfate, obtain the centrate of solid content 50%; Step 2, the centrate of solid content 50% further evaporates, is dried, and obtains the ammonium sulfate fertilizer product of moisture content 5%, and the CL-in centrate, F-ion are fixed in solid-state ammonium sulfate fertilizer product with the form of NH4CL, NH4F; Step 3, collects ammonium sulfate fertilizer product; Step 4, when the centrate of solid content 50% is further evaporated, is dried, can produce the secondary vapour with ammonium sulfate, and the secondary vapour with ammonium sulfate is filtered; Step 5, carries out condensing cooling to the secondary vapour after filtering; Step 6, is discharged into the secondary vapour after condensing cooling in thionizer.
Further, step 2 comprises the centrate of solid content 50%, deliver in rake vacuum-evaporation moisture eliminator, further evaporation, dry, to obtain the ammonium sulfate fertilizer product of moisture content 5%, the CL-in centrate, F-ion are fixed in solid-state ammonium sulfate fertilizer product with the form of NH4CL, NH4F.
Further, step 3 comprises that ammonium sulfate fertilizer product delivers to hopper by worm conveyor, through semi-automatic packer packing.
Further, step 4 comprises when the centrate of solid content 50% is further evaporated, is dried, and can produce the secondary vapour with ammonium sulfate, and secondary vapour is passed in secondary removable filter, removes secondary vapour entrained solid particle.
Further, step 5 comprises that the secondary vapour after filtering is passed into detachable condensate cooler carries out condensing cooling, in condensate water pot, sends by water of condensation transferpump the condensed fluid collection producing after removable condensate cooler condensing cooling back to thionizer.
Further, step 6 comprises that the secondary vapour after condensing cooling is discharged in desulfuration absorbing tower via vacuum pump.
Reduce a device for CL-, F-ion content, for reducing the slurries through multiple-effect vacuum evaporative crystallization, in whizzer, isolate after solid ammonium sulfate, obtain CL-, F-ion content in the centrate of solid content 50%; The device of described reduction CL-, F-ion content comprises rake vacuum-evaporation moisture eliminator, detachable filter device, condensing cooling mechanism, vacuum pump, desulfuration absorbing tower and recovering mechanism; Described rake vacuum-evaporation moisture eliminator receives the centrate of solid content 50%, for the centrate of solid content 50% further being evaporated, being dried, to obtain the ammonium sulfate fertilizer of moisture content 5%; Described rake vacuum-evaporation moisture eliminator is connected with recovering mechanism, and the ammonium sulfate fertilizer that obtains moisture content 5% is delivered to recovering mechanism; Described rake vacuum-evaporation moisture eliminator and described detachable filter device, be delivered to detachable filter device by the secondary vapour producing with ammonium sulfate; Described detachable filter device is connected with described condensing cooling mechanism, and the secondary vapour after filtering is delivered to condensing cooling mechanism; Described condensing cooling mechanism is connected with described vacuum pump; Described vacuum pump is connected with described desulfuration absorbing tower, and the secondary vapour after condensing cooling is delivered in desulfuration absorbing tower.
Further, described condensing cooling mechanism comprises removable condensate cooler, chilled water tank and water coolant transferpump; Described removable condensate cooler is connected with described detachable filter device, and the secondary vapour after filtering is carried out to condensing cooling; Described removable condensate cooler is connected with described chilled water tank, by the condensed fluid collection producing after removable condensate cooler condensing cooling in condensate water pot; Described chilled water tank is connected with described water of condensation transferpump, by described water of condensation transferpump, sends back in thionizer; Described vacuum pump is connected with described removable condensate cooler.
Further, before and after described detachable filter device and removable condensate cooler, be provided with differential pressure detector, for detection of the inside differential pressure of described detachable filter device and removable condensate cooler.
Further, described recovering mechanism comprises worm conveyor, hopper and semi-automatic packer; Described rake vacuum-evaporation moisture eliminator is connected with described worm conveyor; Described worm conveyor connects and is connected with described hopper, for the ammonium sulfate fertilizer that obtains moisture content 5% is delivered to hopper; Described semi-automatic packer is connected with described hopper, for ammonium sulfate fertilizer is packed.
A kind of reduction CL-provided by the invention, first the method for F-ion content passes through the slurries of multiple-effect vacuum evaporative crystallization, in whizzer, isolate after solid ammonium sulfate, obtain the centrate of solid content 50%, then the centrate of solid content 50% is further evaporated, dry, obtain the ammonium sulfate fertilizer product of moisture content 5%, CL-in centrate, F-ion is with NH4CL, the form of NH4F is fixed in solid-state ammonium sulfate fertilizer product, collect ammonium sulfate fertilizer product, reduce efficiently the CL-in ammonia process of desulfurization sulphur ammonium slurries, F-ionic concn, then the centrate of solid content 50% is further evaporated, when dry, can produce the secondary vapour with ammonium sulfate, secondary vapour with ammonium sulfate is filtered, then the secondary vapour after filtering is carried out to condensing cooling, finally the secondary vapour after condensing cooling is discharged in thionizer, can not cause secondary exhaust gas to pollute.
Accompanying drawing explanation
The process flow sheet of the reduction CL-that Fig. 1 provides for the embodiment of the present invention, the method for F-ion content.
Embodiment
Referring to Fig. 1, a kind of CL-of reduction that the embodiment of the present invention provides, the device of F-ion content, comprise rake vacuum-evaporation moisture eliminator 1, detachable filter device 2, condensing cooling mechanism, vacuum pump 4, desulfuration absorbing tower and recovering mechanism.Rake vacuum-evaporation moisture eliminator 1 receives the centrate of solid content 50%, for the centrate of solid content 50% further being evaporated, being dried, to obtain the ammonium sulfate fertilizer of moisture content 5%.Rake vacuum-evaporation moisture eliminator 1 is connected with recovering mechanism, and the ammonium sulfate fertilizer that obtains moisture content 5% is delivered to recovering mechanism, and recovering mechanism comprises worm conveyor 5, hopper 6 and semi-automatic packer 7; Rake vacuum-evaporation moisture eliminator 1 is connected with worm conveyor 5; Worm conveyor 5 connects and is connected with hopper 6, for the ammonium sulfate fertilizer that obtains moisture content 5% is delivered to hopper 6; Semi-automatic packer 7 is connected with hopper 6, for ammonium sulfate fertilizer is packed.Rake vacuum-evaporation moisture eliminator 1 and described detachable filter device 2, be delivered to detachable filter device 2 by the secondary vapour producing with ammonium sulfate.Detachable filter device 2 front and back are provided with differential pressure detector, when resistance reaches set(ting)value, its inside are washed and are purged.Detachable filter device 2 is connected with condensing cooling mechanism, and the secondary vapour after filtering is delivered to condensing cooling mechanism; Condensing cooling mechanism comprises removable condensate cooler 3, chilled water tank 8 and water coolant transferpump 9; Removable condensate cooler 3 is connected with detachable filter device 2, and the secondary vapour after filtering is carried out to condensing cooling; Removable condensate cooler 3 is connected with chilled water tank 8, by the condensed fluid collection producing after removable condensate cooler 3 condensing coolings in condensate water pot 8; Chilled water tank 8 is connected with water of condensation transferpump 9, by water of condensation transferpump 9, sends back in thionizer, and vacuum pump 4 is connected with removable condensate cooler 3.And removable condensate cooler 3 front and back are provided with differential pressure detector, when resistance reaches set(ting)value, its inside are washed and purged.Vacuum pump 4 is connected with desulfuration absorbing tower, and the secondary vapour after condensing cooling is delivered in desulfuration absorbing tower, does not cause any secondary exhaust gas to pollute.
When using the present invention to reduce CL-, F-ion content, comprise the following steps:
Step 1 through the slurries of multiple-effect vacuum evaporative crystallization, is isolated after solid ammonium sulfate in whizzer, obtains the centrate of solid content 50%; Step 2, by the centrate of solid content 50%, deliver in rake vacuum-evaporation moisture eliminator 1, further evaporation, dry, to obtain the ammonium sulfate fertilizer product of moisture content 5%, the CL-in centrate, F-ion are fixed in solid-state ammonium sulfate fertilizer product with the form of NH4CL, NH4F; Step 3, ammonium sulfate fertilizer product is delivered to hopper 6 by worm conveyor 5, through semi-automatic packer 7 packings; Step 4, when the centrate of solid content 50% is further evaporated, is dried, can produce the secondary vapour with ammonium sulfate, and secondary vapour is passed in secondary removable filter 2, removes secondary vapour entrained solid particle; Step 5, secondary vapour after filtering is passed into detachable condensate cooler 3 and carry out condensing cooling, in condensate water pot 8, by water of condensation transferpump 9, send the condensed fluid collection producing after removable condensate cooler 3 condensing coolings back to thionizer, without any discharge of wastewater; Step 6, the secondary vapour after condensing cooling is discharged in desulfuration absorbing tower via vacuum pump 4, does not cause any secondary pollution.
A kind of reduction CL-provided by the invention, first the method for F-ion content passes through the slurries of multiple-effect vacuum evaporative crystallization, in whizzer, isolate after solid ammonium sulfate, obtain the centrate of solid content 50%, then the centrate of solid content 50% is further evaporated, dry, obtain the ammonium sulfate fertilizer product of moisture content 5%, CL-in centrate, F-ion is with NH4CL, the form of NH4F is fixed in solid-state ammonium sulfate fertilizer product, collect ammonium sulfate fertilizer product, reduce efficiently the CL-in ammonia process of desulfurization sulphur ammonium slurries, F-ionic concn, then the centrate of solid content 50% is further evaporated, when dry, can produce the secondary vapour with ammonium sulfate, secondary vapour with ammonium sulfate is filtered, then the secondary vapour after filtering is carried out to condensing cooling, finally the secondary vapour after condensing cooling is discharged in thionizer, can not cause secondary exhaust gas to pollute.
It should be noted last that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to example, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (10)
1. a method that reduces CL-, F-ion content, is characterized in that, comprises the following steps: step 1, through the slurries of multiple-effect vacuum evaporative crystallization, in whizzer, isolate after solid ammonium sulfate, and obtain the centrate of solid content 50%; Step 2, the centrate of solid content 50% further evaporates, is dried, and obtains the ammonium sulfate fertilizer product of moisture content 5%, and the CL-in centrate, F-ion are fixed in solid-state ammonium sulfate fertilizer product with the form of NH4CL, NH4F; Step 3, collects ammonium sulfate fertilizer product; Step 4, when the centrate of solid content 50% is further evaporated, is dried, can produce the secondary vapour with ammonium sulfate, and the secondary vapour with ammonium sulfate is filtered; Step 5, carries out condensing cooling to the secondary vapour after filtering; Step 6, is discharged into the secondary vapour after condensing cooling in thionizer.
2. the method for reduction according to claim 1 CL-, F-ion content, it is characterized in that, step 2 comprises: by the centrate of solid content 50%, deliver in rake vacuum-evaporation moisture eliminator (1), further evaporation, dry, to obtain the ammonium sulfate fertilizer product of moisture content 5%, the CL-in centrate, F-ion are fixed in solid-state ammonium sulfate fertilizer product with the form of NH4CL, NH4F.
3. the method for reduction CL-according to claim 1, F-ion content, is characterized in that, step 3 comprises: ammonium sulfate fertilizer product is delivered to hopper (6) by worm conveyor (5), through semi-automatic packer (7) packing.
4. the method for reduction according to claim 1 CL-, F-ion content, it is characterized in that, step 4 comprises: when the centrate to solid content 50% further evaporates, is dried, can produce the secondary vapour with ammonium sulfate, secondary vapour is passed in secondary removable filter (2), remove secondary vapour entrained solid particle.
5. the method for reduction according to claim 1 CL-, F-ion content, it is characterized in that, step 5 comprises: the secondary vapour after filtering is passed into detachable condensate cooler (3) and carry out condensing cooling, in condensate water pot (8), by water of condensation transferpump (9), send the condensed fluid collection producing after removable condensate cooler (3) condensing cooling back to thionizer.
6. the method for reduction CL-according to claim 1, F-ion content, is characterized in that, step 6 comprises: the secondary vapour after condensing cooling is discharged in desulfuration absorbing tower via vacuum pump (4).
7. reduce a device for CL-, F-ion content, for reducing the slurries through multiple-effect vacuum evaporative crystallization, in whizzer, isolate after solid ammonium sulfate, obtain CL-, F-ion content in the centrate of solid content 50%; It is characterized in that, the device of described reduction CL-, F-ion content comprises: rake vacuum-evaporation moisture eliminator (1), detachable filter device (2), condensing cooling mechanism, vacuum pump (4), desulfuration absorbing tower and recovering mechanism; Described rake vacuum-evaporation moisture eliminator (1) receives the centrate of solid content 50%, for the centrate of solid content 50% further being evaporated, being dried, to obtain the ammonium sulfate fertilizer of moisture content 5%; Described rake vacuum-evaporation moisture eliminator (1) is connected with recovering mechanism, and the ammonium sulfate fertilizer that obtains moisture content 5% is delivered to recovering mechanism; Described rake vacuum-evaporation moisture eliminator (1) and described detachable filter device (2), be delivered to detachable filter device (2) by the secondary vapour producing with ammonium sulfate; Described detachable filter device (2) is connected with described condensing cooling mechanism, and the secondary vapour after filtering is delivered to condensing cooling mechanism; Described condensing cooling mechanism is connected with described vacuum pump (4); Described vacuum pump (4) is connected with described desulfuration absorbing tower, and the secondary vapour after condensing cooling is delivered in desulfuration absorbing tower.
8. the device of reduction according to claim 7 CL-, F-ion content, is characterized in that: described condensing cooling mechanism comprises removable condensate cooler (3), chilled water tank (8) and water coolant transferpump (9); Described removable condensate cooler (3) is connected with described detachable filter device (2), and the secondary vapour after filtering is carried out to condensing cooling; Described removable condensate cooler (3) is connected with described chilled water tank (8), by the condensed fluid collection producing after removable condensate cooler (3) condensing cooling in condensate water pot (8); Described chilled water tank (8) is connected with described water of condensation transferpump (9), by described water of condensation transferpump (9), sends back in thionizer; Described vacuum pump (4) is connected with described removable condensate cooler (3).
9. the device of reduction according to claim 8 CL-, F-ion content, it is characterized in that: before and after described detachable filter device (2) and removable condensate cooler (3), be provided with differential pressure detector, for detection of the inside differential pressure of described detachable filter device (2) and removable condensate cooler (3).
10. the device of reduction CL-according to claim 7, F-ion content, is characterized in that: described recovering mechanism comprises worm conveyor (5), hopper (6) and semi-automatic packer (7); Described rake vacuum-evaporation moisture eliminator (1) is connected with described worm conveyor (5); Described worm conveyor (5) connects and is connected with described hopper (6), for the ammonium sulfate fertilizer that obtains moisture content 5% being delivered to hopper (6); Described semi-automatic packer (7) is connected with described hopper (6), for ammonium sulfate fertilizer is packed.
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| CN201410267059.7A CN104016535B (en) | 2014-06-16 | 2014-06-16 | A kind of device and method that reduces CL-, F-ion concentration |
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| CN201410267059.7A CN104016535B (en) | 2014-06-16 | 2014-06-16 | A kind of device and method that reduces CL-, F-ion concentration |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104368231A (en) * | 2014-10-10 | 2015-02-25 | 江苏新世纪江南环保股份有限公司 | Method for controlling chlorine / fluorine content in flue gas desulfurization absorption liquid |
| CN110540332A (en) * | 2019-09-24 | 2019-12-06 | 东海岸环境科技无锡有限公司 | fluorine-containing and chlorine-containing sewage treatment process |
| CN111995150A (en) * | 2020-08-19 | 2020-11-27 | 广东闻扬环境科技有限公司 | Salt-containing wastewater recycling treatment system and treatment method |
| CN112678973A (en) * | 2019-10-18 | 2021-04-20 | 中国石油化工股份有限公司 | Method for dechlorinating ammonia flue gas desulfurization circulating liquid |
| CN117049718A (en) * | 2023-06-28 | 2023-11-14 | 北京清新环境技术股份有限公司 | Method for removing chloride ions from desulfurization slurry |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104368231A (en) * | 2014-10-10 | 2015-02-25 | 江苏新世纪江南环保股份有限公司 | Method for controlling chlorine / fluorine content in flue gas desulfurization absorption liquid |
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| CN111995150A (en) * | 2020-08-19 | 2020-11-27 | 广东闻扬环境科技有限公司 | Salt-containing wastewater recycling treatment system and treatment method |
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| CN117049718A (en) * | 2023-06-28 | 2023-11-14 | 北京清新环境技术股份有限公司 | Method for removing chloride ions from desulfurization slurry |
| CN117049718B (en) * | 2023-06-28 | 2024-04-09 | 北京清新环境技术股份有限公司 | Method for removing chloride ions from desulfurization slurry |
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| Publication number | Publication date |
|---|---|
| CN104016535B (en) | 2016-05-11 |
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