SU1234365A1 - Method of purifying sodium chloride solutions - Google Patents
Method of purifying sodium chloride solutions Download PDFInfo
- Publication number
- SU1234365A1 SU1234365A1 SU843824112A SU3824112A SU1234365A1 SU 1234365 A1 SU1234365 A1 SU 1234365A1 SU 843824112 A SU843824112 A SU 843824112A SU 3824112 A SU3824112 A SU 3824112A SU 1234365 A1 SU1234365 A1 SU 1234365A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- potassium
- sodium chloride
- chloride solutions
- magnesium
- calcium
- Prior art date
Links
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 title claims description 13
- 238000000034 method Methods 0.000 title claims description 7
- 239000011780 sodium chloride Substances 0.000 title description 6
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 11
- 229910052700 potassium Inorganic materials 0.000 claims description 11
- 239000011591 potassium Substances 0.000 claims description 11
- 239000011575 calcium Substances 0.000 claims description 7
- 239000011777 magnesium Substances 0.000 claims description 7
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 5
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 5
- 229910052791 calcium Inorganic materials 0.000 claims description 5
- 229910052749 magnesium Inorganic materials 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims 1
- 229910052783 alkali metal Inorganic materials 0.000 claims 1
- -1 alkali metal orthophosphate Chemical class 0.000 claims 1
- 159000000003 magnesium salts Chemical class 0.000 claims 1
- 239000002244 precipitate Substances 0.000 claims 1
- 229910052708 sodium Inorganic materials 0.000 claims 1
- 239000011734 sodium Substances 0.000 claims 1
- 239000012267 brine Substances 0.000 description 8
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 235000011007 phosphoric acid Nutrition 0.000 description 1
- 229910001414 potassium ion Inorganic materials 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Description
Изобретение относитс к способам очистки растворов хлористого натри от примесей кали , кальци , магни и может быть использовано в технологии получени хлора и каустической соды электролизом и в технологии получени кальцинированной воды.The invention relates to methods for purifying sodium chloride solutions from potassium, calcium, and magnesium impurities and can be used in the production of chlorine and caustic soda by electrolysis and in the technology of producing soda water.
Цель чзобретени - интенсификаци процесса и одновременна очистка растворов хлористого натри от кали .The goal of the acquisition is to intensify the process and simultaneously purify sodium chloride solutions from potassium.
Пример. В2л раствора хлористого натри , содержащего, г/л; NaCl 300; кали 3; кальци 3 добавл ют 32 мл 50%-ной ортофосфорной кислоты (плотность 1,335 г/см ) и 72 мл раствора хлористого магни (MgCl «бН.О) с концентрацией магни 150 г/л Осаждение производ т при фиксированных значени х рН 10, и интенсивном перемешивании образующейс суспензии. Рассол фильтруют, а очищенный рассол направл ют на осветление .Example. B2 of sodium chloride solution containing, g / l; NaCl 300; potassium 3; Calcium 3 was added 32 ml of 50% orthophosphoric acid (density 1.355 g / cm) and 72 ml of magnesium chloride solution (MgCl "BN.O) with a magnesium concentration of 150 g / l. The precipitation was carried out at fixed pH values 10, and vigorous stirring of the resulting suspension. The brine is filtered, and the purified brine is sent for clarification.
Содержание примесей в очищенном рассоле составило: К 0,55 г/л; Са 0,2 мг/л, Mg 0,1 мг/л; Р0 150мг/The content of impurities in the purified brine was: K 0.55 g / l; Ca 0.2 mg / l, Mg 0.1 mg / l; P0 150mg /
Кпи ние рН на процесс очистки раствора хлорида натри от ионов кали при отношении CajMg t:3 и 20 С следующее:The pH value of the process of cleaning the solution of sodium chloride from potassium ions with respect to CajMg t: 3 and 20 С is as follows:
рН Содержание кали в очищенном рассоле , г/лpH Content of potassium in purified brine, g / l
1,71.7
1,3 0,61.3 0.6
0,5 0,5 0,6 1,00.5 0.5 0.6 1.0
1J2,01J2.0
Вли ,ние температуры на содержание остаточного кали в очищаемом рассоле при соотнощении Ca:Mg 1:3 и рН следующее:The effect of temperature on the content of residual potassium in the purified brine with the ratio Ca: Mg 1: 3 and pH is as follows:
Те/«1ератур ,°С Содержание кали Te / "Temperature, ° C Content of potassium
в очищенном рассоле , г/лin purified brine, g / l
О 5About 5
0,5 0,50.5 0.5
0,5 0,5 0,6 1,2 2,50.5 0.5 0.6 1.2 2.5
Приведенные данные показывают, что при повышении температуры раствора более 25°С ранее осажденный калий пере} одит обратно в раствор. Оптимальным интервалом температуры вл етс 5-25°С. Проведение очистки рассола при температуре ниже 5 С нецелесообразно из-за уменьшени скорости отсто осадка.These data show that with an increase in the temperature of the solution over 25 ° C, the previously precipitated potassium is returned to the solution. The optimum temperature range is 5-25 ° C. Cleaning the brine at a temperature below 5 ° C is impractical because of a decrease in the rate of sludge sediment.
Вли ние избытка магни на содержание кали в очищенном растворе и на скорость отстаивани при рН 10 и приведено в таблице.The effect of an excess of magnesium on the potassium content in the purified solution and on the rate of settling at pH 10 is given in the table.
Оптимальным интервалом избыточного количества магни по отношению к кальцию, обеспечивающим требуемую степень очистки рассолов от кали одновременно с высокой скоростью отстаивани осадка, вл етс 3-3,5.The optimal range of excess magnesium with respect to calcium, which provides the required degree of purification of brines from potassium simultaneously with a high sedimentation rate, is 3-3.5.
Таким образом, предлагаемьй способ позвол ет удалить калий из рассола до треСоваиий диафрагменного электролиза, увеличить скорость отсто в 5 раз, скорость ф11льтраш1И в 3 раза, уменьшить рпсход фильтро- вспомогател в l роча.Thus, the proposed method makes it possible to remove potassium from brine to the temperature of diaphragm electrolysis, increase the rate of sludge by 5 times, the rate of 11 h trash and 3 times, reduce the flow rate of the filter auxiliary in l rocha.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU843824112A SU1234365A1 (en) | 1984-12-12 | 1984-12-12 | Method of purifying sodium chloride solutions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU843824112A SU1234365A1 (en) | 1984-12-12 | 1984-12-12 | Method of purifying sodium chloride solutions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1234365A1 true SU1234365A1 (en) | 1986-05-30 |
Family
ID=21151176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU843824112A SU1234365A1 (en) | 1984-12-12 | 1984-12-12 | Method of purifying sodium chloride solutions |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1234365A1 (en) |
-
1984
- 1984-12-12 SU SU843824112A patent/SU1234365A1/en active
Non-Patent Citations (1)
| Title |
|---|
| Фурман А.А. и др. Приготовление и очистка рассола. М.: Хньда , 1966. Патент DE № 2837192, кл. С 01 D 3/16, 1979. * |
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