SU327132A1 - METHOD FOR ISOLATION OF IMPURITIES FROM SODIUM CHLORITE SOLUTION - Google Patents
METHOD FOR ISOLATION OF IMPURITIES FROM SODIUM CHLORITE SOLUTIONInfo
- Publication number
- SU327132A1 SU327132A1 SU1244827A SU1244827A SU327132A1 SU 327132 A1 SU327132 A1 SU 327132A1 SU 1244827 A SU1244827 A SU 1244827A SU 1244827 A SU1244827 A SU 1244827A SU 327132 A1 SU327132 A1 SU 327132A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- impurities
- sodium chlorite
- isolation
- chlorite solution
- solution
- Prior art date
Links
- UKLNMMHNWFDKNT-UHFFFAOYSA-M Sodium chlorite Chemical compound [Na+].[O-]Cl=O UKLNMMHNWFDKNT-UHFFFAOYSA-M 0.000 title description 10
- 229960002218 sodium chlorite Drugs 0.000 title description 10
- 239000012535 impurity Substances 0.000 title description 9
- 238000002955 isolation Methods 0.000 title 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 8
- XTEGARKTQYYJKE-UHFFFAOYSA-M chlorate Chemical compound [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000011780 sodium chloride Substances 0.000 description 4
- 239000007791 liquid phase Substances 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 239000007790 solid phase Substances 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate dianion Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N Sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- QBWCMBCROVPCKQ-UHFFFAOYSA-M chlorite Chemical compound [O-]Cl=O QBWCMBCROVPCKQ-UHFFFAOYSA-M 0.000 description 1
- 229910001919 chlorite Inorganic materials 0.000 description 1
- 229910052619 chlorite group Inorganic materials 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000005712 crystallization Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000001187 sodium carbonate Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Description
Изобретение относитс к способу выделени примесей из раствора хлорита натри , используемого , в основном, в качестве отбеливающего средства.This invention relates to a process for separating impurities from a solution of sodium chlorite, which is used mainly as a bleaching agent.
Известен способ выделени примесей из раствора хлорита натри , содержащего хлорат, выпариванием при повышенной температуре (не выше 70°С) с последующим отделением выпавщих в осадок примесей.A known method for separating impurities from a solution of sodium chlorite containing chlorate is evaporated at an elevated temperature (not exceeding 70 ° C), followed by separating the precipitated impurities.
Недостатком известного способа вл етс невозможность достижени необходимой очистки раствора хлорита натри , содержащего помимо хлората также примеси хлорида и карбоната натри в количестве не менее 25% по отнощению к сухому остатку.The disadvantage of the known method is the impossibility of achieving the necessary purification of sodium chlorite solution, which contains, in addition to chlorate, no less than 25% of sodium chloride and carbonate impurities in relation to the dry residue.
Цель изобретени - повыщение степени очистки растворов хлорита натри , содержащих хлориды и карбонаты. Дл этого процесс выпаривани ведут при температуре выше 70°С, преимущественно 70-90°С, до соотношени твердой и жидкой фаз не более 1 :12.The purpose of the invention is to increase the degree of purification of sodium chlorite solutions containing chlorides and carbonates. For this, the evaporation process is carried out at a temperature above 70 ° C, preferably 70-90 ° C, to a ratio of the solid and liquid phases of not more than 1: 12.
При переработке технического раствора хлорита натри в осадок выпадает около 60% примесей. Если в исходном растворе соотношение хлорита натри и примесей 3:1, то после выпаривани и отделени выпавших в осадок примесей это соотношение уже 9:1.When processing the technical solution of sodium chlorite, about 60% of impurities precipitate. If in the initial solution the ratio of sodium chlorite and impurities is 3: 1, then after evaporation and separation of the precipitated impurities, this ratio is already 9: 1.
увеличиваетс растворимость хлорита натри и сужаетс область его кристаллизации. Соблюдение указанного соотношени твердой п жидкой фаз в суспензии (не более 1:12) вл етс условием обеспечени максимального выхода основного продукта - хлорита натри . Пример. 1 кг технического раствора хлорита натри , содерл ащего (в %): 16,20 NaCU; 4,05 NaCl; 1,08 NaClOa; 1,04 , выпаривают при температуре 70,5°С в течение 1,5 час под вакуумом (остаточное давление 30 мм рт. ст.). После удалени 0,645 кг воды процесс выпаривани прекращают и выпаренную массу отфильтровывают под вакуумом при температуре не менее 70°С. Осадок после фильтрации в количестве 0,027 кг содержит в основном хлорид с примесью хлорита и карбоната .the solubility of sodium chlorite increases and its crystallization range narrows. Compliance with the indicated ratio of solid and liquid phases in suspension (no more than 1:12) is a condition for ensuring the maximum yield of the main product, sodium chlorite. Example. 1 kg of technical solution of sodium chlorite containing (in%): 16.20 NaCU; 4.05 NaCl; 1.08 NaClOa; 1.04, evaporated at a temperature of 70.5 ° C for 1.5 hours under vacuum (residual pressure of 30 mm Hg. Art.). After removal of 0.645 kg of water, the evaporation process is stopped and the evaporated mass is filtered under vacuum at a temperature of at least 70 ° C. The precipitate after filtration in the amount of 0.027 kg contains mainly chloride mixed with chlorite and carbonate.
Получают маточный раствор следующегоGet the mother liquor next
состава (в %): 48,4 NaClOo; 4,12 NaCl; 0,81 NaClOs; 0,4 Na.COa в количестве 0,328 кг. Этот раствор досуха упаривают под вакуумом.composition (%): 48.4 NaClOo; 4.12 NaCl; 0.81 NaClOs; 0.4 Na.COa in the amount of 0.328 kg. This solution is evaporated to dryness under vacuum.
Готовый продукт в количестве 0,176 кг содержит (в %):90,5 NaClO,; 7,7 NaCl; 1,4The finished product in an amount of 0.176 kg contains (in%): 90.5 NaClO; 7.7 NaCl; 1.4
NaClOs; 0,7 ЫагСОз.NaClOs; 0,7 CONTR.
Предмет изобретени 3 следующим отделением примесей, отличающийс тем, что, с целью повыщени степени очистки, процесс выпаривани ведут при тем4 пературе выше 70°С, преимущественно 70-90°С, до соотношени твердой и жидкой фаз не более 1:12.The subject matter of the invention 3 is the following separation of impurities, characterized in that, in order to increase the degree of purification, the evaporation process is carried out at a temperature above 70 ° C, preferably 70-90 ° C, to a ratio of solid and liquid phases not more than 1:12.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU327132A1 true SU327132A1 (en) |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4044103A (en) * | 1973-02-05 | 1977-08-23 | Produits Chimiques Ugine Kuhlmann | Storage-stable sodium chlorite |
| US8501244B2 (en) | 2005-12-22 | 2013-08-06 | Neuraltus Pharmaceuticals, Inc. | Chlorite formulations and methods of preparation and use thereof |
| US9579346B2 (en) | 2009-08-06 | 2017-02-28 | The Regents Of The Univerity Of California | Treatment of macrophage-related disorders |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4044103A (en) * | 1973-02-05 | 1977-08-23 | Produits Chimiques Ugine Kuhlmann | Storage-stable sodium chlorite |
| US8501244B2 (en) | 2005-12-22 | 2013-08-06 | Neuraltus Pharmaceuticals, Inc. | Chlorite formulations and methods of preparation and use thereof |
| US9266734B2 (en) | 2005-12-22 | 2016-02-23 | Neuraltus Pharmaceuticals, Inc. | Chlorite formulations and methods of preparation and use thereof |
| US9839650B2 (en) | 2005-12-22 | 2017-12-12 | Neuraltus Pharmaceuticals, Inc. | Chlorite formulations, and methods of preparation and use thereof |
| US9579346B2 (en) | 2009-08-06 | 2017-02-28 | The Regents Of The Univerity Of California | Treatment of macrophage-related disorders |
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