SU1225813A1 - Method of purifying sodium chloride solution - Google Patents
Method of purifying sodium chloride solution Download PDFInfo
- Publication number
- SU1225813A1 SU1225813A1 SU833624519A SU3624519A SU1225813A1 SU 1225813 A1 SU1225813 A1 SU 1225813A1 SU 833624519 A SU833624519 A SU 833624519A SU 3624519 A SU3624519 A SU 3624519A SU 1225813 A1 SU1225813 A1 SU 1225813A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- solution
- filtrate
- sodium
- sodium chloride
- filtration
- Prior art date
Links
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 title claims description 19
- 238000000034 method Methods 0.000 title claims description 5
- 239000011780 sodium chloride Substances 0.000 title description 9
- 239000000706 filtrate Substances 0.000 claims description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 239000000725 suspension Substances 0.000 claims description 12
- 239000011575 calcium Substances 0.000 claims description 11
- 238000001914 filtration Methods 0.000 claims description 7
- 239000011777 magnesium Substances 0.000 claims description 7
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- 239000003153 chemical reaction reagent Substances 0.000 claims description 6
- 239000004115 Sodium Silicate Substances 0.000 claims description 5
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 5
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 5
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 5
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- 239000002244 precipitate Substances 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 2
- 230000008021 deposition Effects 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 239000011734 sodium Substances 0.000 claims description 2
- 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
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims 1
- 239000000920 calcium hydroxide Substances 0.000 claims 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims 1
- 238000004140 cleaning Methods 0.000 claims 1
- 239000013049 sediment Substances 0.000 claims 1
- 238000000926 separation method Methods 0.000 claims 1
- 229910052708 sodium Inorganic materials 0.000 claims 1
- 238000010129 solution processing Methods 0.000 claims 1
- 239000000243 solution Substances 0.000 description 15
- 238000004062 sedimentation Methods 0.000 description 7
- 239000000203 mixture Substances 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 239000002699 waste material Substances 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 235000008375 Decussocarpus nagi Nutrition 0.000 description 1
- 244000309456 Decussocarpus nagi Species 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
Landscapes
- Removal Of Specific Substances (AREA)
Description
Изобретение относитс к очистке отработанных растворов хлористого натри и может быть использовано в различных отрасл х промьшшенности.This invention relates to the purification of waste sodium chloride solutions and can be used in various industries.
Цель изобретени - интенсификаци процесса за счет увеличени Ькорости осаждени ,и фильтрации осадка.The purpose of the invention is to intensify the process by increasing the b sedimentation rate, and filtering the precipitate.
Пример. Берут 1 л отработанного раствора хлорида натри состава , мас.%: CaGI 0,20; MgClj 0,22; FeClj. 0,002; NaCI 0,64, 0,03 л фильтрата (1,0 мас.% от отработанного раствора NaGI) состава, мас.%: СаСО 0,0007; Mg(OH) 0,001; Са(ОН),, 0,12; NaCI 1,12. Отработанный раствор об- рабатьгоают 54,5 мл 2 н. (0,1 стех.ед. по отношению к Са из CaCI + Са(ОН),), 24 мл Na-SiOj с концентрацией раствора 5 г/л SiOj (40 мг SiO) i л отработанного раствора), затем приливают фильтрат и 69,5 МП 2 н. NaOH (1,0 стех.ед. по отношению к Mg из MgCI) и при ЗО С образующуюс суспензию осветл ют отстаиванием, при этом скорость осаждени взвеси 0,52 м/ч.Example. Take 1 liter waste solution of sodium chloride composition, wt.%: CaGI 0.20; MgCl j 0.22; FeClj. 0.002; NaCI 0.64, 0.03 l of filtrate (1.0 wt.% From the spent NaGI solution) composition, wt.%: CaCO 0,0007; Mg (OH) 0.001; Ca (OH), 0.12; NaCl 1.12. The spent solution is treated with 54.5 ml of 2N. (0.1 shol. Units with respect to Ca from CaCI + Ca (OH),), 24 ml of Na-SiOj with a concentration of a solution of 5 g / l SiOj (40 mg SiO) and l of the spent solution), then the filtrate is poured and 69.5 MP 2 n. NaOH (1.0 stoich. Unit with respect to Mg from MgCI) and at ZO C the resulting suspension is clarified by settling, and the sedimentation rate of the suspension is 0.52 m / h.
Состав твердой фазы сгущенной суспензии на 1 л раствора, г/л: СаСОд 54,9; Mg(OH)j 40,6; Fe(OH)j 0,39; прочие 2,24, всего 98,3.The composition of the solid phase of the thickened suspension per 1 liter of solution, g / l: CaCl5 54.9; Mg (OH) j 40.6; Fe (OH) j 0.39; other 2.24, a total of 98.3.
Состав осветленного рассола, г/л: NaCi 11,2; Са 0,003; Mg 0,004; Fe отсутствует .The composition of the clarified brine, g / l: NaCi 11,2; Ca 0.003; Mg 0.004; Fe is missing.
К 100 мл сгущенной суспензии добавл ют 0,2 мас.% Ca(OH)j и полученную суспензию фильтруют, скорость фильтровани 0,19 м /м ч. Состав полученного фильтрата, г/л: Са(ОН) 1,2 (0,12 мас.%); CaCOj 0,007; Mg(OH)jO,01; взвешенные вещества отсутствуют; NaCI 11,2; Fe отсутствует 1,0 мас.% фильтрата (по отношению к раствору) возвращают на стадию обработки реагентами, а осадок удал етс в отвал.0.2 wt.% Ca (OH) j is added to 100 ml of a thickened suspension and the resulting suspension is filtered, the filtration rate is 0.19 m / m h. The composition of the obtained filtrate, g / l: Ca (OH) 1.2 (0 , 12 wt.%); CaCOj 0.007; Mg (OH) jO, 01; no suspended solids; NaCl 11.2; Fe is absent 1.0 wt.% Of the filtrate (relative to the solution) is returned to the treatment step with the reactants, and the precipitate is removed to the dump.
ТаблицSpreadsheets
Скорость осаждени (звеси, м/ч, при введении фильтрата, нас.Х О I 0.6 J 0.8 ЬО i .2 1.4 1 2.0 j 2,2 J .« .The deposition rate (stars, m / h, with the introduction of the filtrate, nas.X About I 0.6 J 0.8 BO i .2 1.4 1 2.0 j 2.2 J. “.
Последовательность введени реагентов и фильтратаThe sequence of the introduction of reagents and filtrate
II
SS
00
5five
00
5five
00
5five
В табл. 1 представлены результаты опытов по определению скорости осаждени взвеси после обработки реагентами отработанного раствора NaCI без использовани Na в табл. 2 - результаты опытов по определению скорости осаждени взвеси после обработки реагентами, отработанного раствора хлористого натри в услови х, аналогичных опытам в табл. 1.In tab. Table 1 shows the results of experiments to determine the sedimentation rate of the suspension after treatment with reagents of the spent NaCI solution without using Na in Table. 2 shows the results of experiments to determine the sedimentation rate of a suspension after treatment with reagents, a used solution of sodium chloride under conditions similar to those in Table. one.
Составы отработанного раствора хлористого натри и фильтрата, дозы NaOH и , температура приведены в примере 1. Доза силиката натри составл ет 20 мг/л SiO,j,/1 л отработанного раствора.The compositions of the spent sodium chloride solution and the filtrate, the dose of NaOH and the temperature are given in Example 1. The dose of sodium silicate is 20 mg / l SiO, j, / 1 l of the waste solution.
В табл. 3 приведены данные о про- изводительности по результату и качестве фильтрата при различном содержании в фильтрате Са(ОН) .In tab. 3 shows data on the productivity of the result and the quality of the filtrate with different contents in the filtrate Ca (OH).
Из сравнени результатов табл. 1 и 2 видно, что введение силиката натри на стадии обработки отработанного раствора хлористого натри значительно увеличивает скорость осаждени взвеси. From the comparison of the results table. 1 and 2, it can be seen that the introduction of sodium silicate during the treatment of the spent sodium chloride solution significantly increases the sedimentation rate of the suspension.
Как следует из табл. 2, введение реагентов и фильтрата на стадии обработки обработанного раствора NaCI в следующей последовательности: кар-1 бонат натри , силикат натри , фильтрат , каустическа сода обеспечивает максимальное увеличение скорости осаждени взвеси.As follows from the table. 2, the introduction of the reagents and filtrate in the processing stage of the treated NaCI solution in the following sequence: sodium carbonate card-1, sodium silicate, filtrate, caustic soda provides the maximum increase in the sedimentation rate of the suspension.
Использование предлагаемого способа позвол ет очистить отработанные растворы хлористого натри от примесей ионов кальци , магни , железа до норм повторного использовани при регенерации ионообменных смол, интенсифицировать процесс очистки за счет утвеличени скорости осаждени в 2,5 раза и скорости фильтровани суспензии в 1,9 раз.Using the proposed method makes it possible to purify waste solutions of sodium chloride from impurities of calcium, magnesium, and iron to reuse standards in the regeneration of ion exchange resins, to intensify the purification process by increasing the sedimentation rate by 2.5 times and the filtration rate of the suspension by 1.9 times.
Количество Са(ОН, вводимое в суспеи- ю передThe amount of Ca (OH introduced into the suspension before
фильтрацией,by filtration,
Mac.ZО 0,08 0,12 0,1 0,20 0,25 0,30 0,35Mac.ZO 0.08 0.12 0.1 0.20 0.25 0.30 0.35
СодеркакиеSoderkakie
Са(ОН) в Ca (OH) in
фильтрате,.filtrate
мас.Х О 0,06 0,08 0,1 0,11 0,12 0,Н 0,14 0,14wt.X About 0.06 0.08 0.1 0.11 0.12 0, H 0.14 0.14
Валичне вэве ..вешшх ве- Valichna veve
цеств в . .cstv c. .
фильтратеМутный Мутный Мутный Мутный Мутный Отсут- Отсут- Отсут- Отсутствуют ствуют ствуюг ствуютMuddy Muddy Muddy Muddy Muddy Muddy Lack-Lack-Lack-No-Loose
Производительность по фильтра-. ту, .ч 0,1 0,13 0,13 0,14 0,16-0,19 0,19 0,19Performance by filter-. TU, 0.1 0.13 0.13 0.14 0.16-0.19 0.19 0.19
Т блнца 2T blntz 2
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU833624519A SU1225813A1 (en) | 1983-07-21 | 1983-07-21 | Method of purifying sodium chloride solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU833624519A SU1225813A1 (en) | 1983-07-21 | 1983-07-21 | Method of purifying sodium chloride solution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1225813A1 true SU1225813A1 (en) | 1986-04-23 |
Family
ID=21075325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU833624519A SU1225813A1 (en) | 1983-07-21 | 1983-07-21 | Method of purifying sodium chloride solution |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1225813A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6645458B1 (en) * | 1998-10-30 | 2003-11-11 | Solvay (Societe Anonyme) | Method for making an aqueous sodium chloride solution |
| RU2476379C2 (en) * | 2007-12-28 | 2013-02-27 | Уде Гмбх | Removal of silicon from solution |
-
1983
- 1983-07-21 SU SU833624519A patent/SU1225813A1/en active
Non-Patent Citations (1)
| Title |
|---|
| Патент US № 3977968, кл, С 01 D 3/09, 1976. Патент JP 778707, кл. С 01 D 3/06, 1979. * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6645458B1 (en) * | 1998-10-30 | 2003-11-11 | Solvay (Societe Anonyme) | Method for making an aqueous sodium chloride solution |
| RU2476379C2 (en) * | 2007-12-28 | 2013-02-27 | Уде Гмбх | Removal of silicon from solution |
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