RU2179952C2 - Solution - Google Patents
Solution Download PDFInfo
- Publication number
- RU2179952C2 RU2179952C2 RU99126214/12A RU99126214A RU2179952C2 RU 2179952 C2 RU2179952 C2 RU 2179952C2 RU 99126214/12 A RU99126214/12 A RU 99126214/12A RU 99126214 A RU99126214 A RU 99126214A RU 2179952 C2 RU2179952 C2 RU 2179952C2
- Authority
- RU
- Russia
- Prior art keywords
- paa
- flocculant
- purification
- brine
- calcium
- Prior art date
Links
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 16
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 10
- 239000011575 calcium Substances 0.000 claims abstract description 8
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000000746 purification Methods 0.000 claims abstract description 7
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 6
- 238000005188 flotation Methods 0.000 claims abstract description 6
- 239000011780 sodium chloride Substances 0.000 claims abstract description 6
- DURPTKYDGMDSBL-UHFFFAOYSA-N 1-butoxybutane Chemical class CCCCOCCCC DURPTKYDGMDSBL-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229920001451 polypropylene glycol Polymers 0.000 claims abstract description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- 239000012267 brine Substances 0.000 claims description 11
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 11
- 239000003518 caustics Substances 0.000 claims description 3
- 230000003993 interaction Effects 0.000 claims description 3
- 239000000243 solution Substances 0.000 claims description 3
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 claims 1
- 229910001424 calcium ion Inorganic materials 0.000 claims 1
- 229910001425 magnesium ion Inorganic materials 0.000 claims 1
- 239000003513 alkali Substances 0.000 abstract description 7
- 229910052791 calcium Inorganic materials 0.000 abstract description 6
- 159000000003 magnesium salts Chemical class 0.000 abstract description 5
- 238000001914 filtration Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000005868 electrolysis reaction Methods 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract 2
- 238000006243 chemical reaction Methods 0.000 abstract 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 5
- 235000011121 sodium hydroxide Nutrition 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 235000017550 sodium carbonate Nutrition 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000012047 saturated solution Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
Images
Landscapes
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
Description
Изобретение относится к технологии электрохимических производств, в частности очистки раствора хлорида натрия с применением флокулянта - полиакриламида, идущего после очистки содово-каустическим способом на стадию электролиза для производства хлора, водорода и каустической соды [1]. The invention relates to the technology of electrochemical production, in particular the purification of a sodium chloride solution using a flocculant - polyacrylamide, which, after purification by the soda-caustic method, goes to the electrolysis stage for the production of chlorine, hydrogen and caustic soda [1].
Наиболее близким к предлагаемому способу является способ очистки насыщенного раствора хлорида натрия содово-каустическим способом с применением в качестве флокулянта гидролизованного аммиачного полиакриламида (ПАА) - прототип [2]. Closest to the proposed method is a method of purifying a saturated solution of sodium chloride by the soda-caustic method using hydrolyzed ammonia polyacrylamide (PAA) as a flocculant - a prototype [2].
Недостатком данного способа является большой расход дифицитного и дорогостоящего ПАА для получения гидролизованного продукта, используемого для очистки рассола. The disadvantage of this method is the high consumption of scarce and expensive PAA to obtain a hydrolyzed product used for the purification of brine.
Цель изобретения - повышение качества раствора хлорида натрия (рассола), приводящее к увеличению межремонтного пробега фильтрующих диафрагм, и снижение расхода ПАА. The purpose of the invention is to improve the quality of the solution of sodium chloride (brine), leading to an increase in the overhaul mileage of the filtering diaphragms, and to reduce the consumption of PAA.
Цель достигается тем, что в качестве флокулянта используют продукт взаимодействия ПАА, гидроксида натрия и флотореагента, представляющего собой технический продукт переменного состава, состоящий из смеси монобутиловых эфиров полипропиленгликолей общей структурной формулы
Обработка ПАА щелочью и флотореагентом создает эффект повышения активности флокулянта за счет специфического взаимодействия молекул ПАА с компонентами флотореагента. Особые преимущества наблюдаются в процессе очистки рассола при неблагоприятном соотношении примесей кальция и магния в исходной сырой соли.The goal is achieved in that the product of the interaction of PAA, sodium hydroxide and a flotation reagent is used as a flocculant, which is a technical product of variable composition, consisting of a mixture of monobutyl ethers of polypropylene glycols of the general structural formula
Treatment of PAA with alkali and flotation reagent creates the effect of increasing flocculant activity due to the specific interaction of PAA molecules with flotation reagent components. Particular advantages are observed in the cleaning process of the brine with an unfavorable ratio of calcium and magnesium impurities in the original crude salt.
Пример 1 (прототип). В рассоле состава, г/дм3: NaCl - 308,50; Са2+ - 0,80; Mg2+ - 0,10, при добавлении регламентных количеств кальцинированной соды, щелочи и флокулянта, гидролизованного щелочью ПАА с концентрацией 0,55 г/дм3, после 30 мин отстаивания достигалась остаточная суммарная концентрация солей кальция и магния в рассоле 9,0 мг/дм3.Example 1 (prototype). In a brine of the composition, g / dm 3 : NaCl - 308.50; Ca 2+ - 0.80; Mg 2+ - 0.10, with the addition of regulated amounts of soda ash, alkali and flocculant hydrolyzed with alkali PAA with a concentration of 0.55 g / dm 3 , after 30 min of settling, a residual total concentration of calcium and magnesium salts in the brine of 9.0 mg was achieved / dm 3 .
Пример 2 (прототип). В рассол состава по примеру 1 вводили кальцинированную соду, щелочь и гидролизованный ПАА (по примеру 1) с концентрацией 0,22 г/дм3. Остаточное суммарное содержание солей кальция и магния после 30 мин отстоя составляло 16,5 мг/дм3.Example 2 (prototype). Calcined soda, alkali and hydrolyzed PAA (according to Example 1) with a concentration of 0.22 g / dm 3 were introduced into the brine of the composition of Example 1. The residual total content of calcium and magnesium salts after 30 min of sediment was 16.5 mg / dm 3 .
Пример 3 (по предлагаемому способу). В рассол состава по примеру 1 вводили кальцинированную соду, щелочь по примеру 1, гидролизованный со щелочью ПАА в присутствии флотореагента, представляющего собой технический продукт переменного состава, состоящий из смеси монобутиловых эфиров полипропиленгликолей, при концентрации 0,22 г/дм3. После отстоя в течение 30 мин остаточное суммарное содержание солей кальция и магния составляло 4,9 мг/дм3.Example 3 (by the proposed method). Soda ash was added to the brine of the composition of Example 1, the alkali of Example 1 hydrolyzed with PAA alkali in the presence of a flotation reagent, which is a technical product of variable composition, consisting of a mixture of monobutyl ethers of polypropylene glycols, at a concentration of 0.22 g / dm 3 . After settling for 30 minutes, the residual total content of calcium and magnesium salts was 4.9 mg / dm 3 .
Результаты испытаний представлены в таблице. The test results are presented in the table.
Как следует из таблицы, применение предлагаемого способа очистки рассола обеспечивает снижение расхода флокулянта более чем в 2,5 раза и уменьшение суммарной концентрации солей кальция и магния в очищенном рассоле в 1,8 раза (по сравнению с примером 1). As follows from the table, the application of the proposed method for cleaning brine provides a decrease in flocculant consumption by more than 2.5 times and a decrease in the total concentration of calcium and magnesium salts in purified brine by 1.8 times (compared with example 1).
Кроме того, повышение степени очистки рассола приводит к снижению затрат на стадии дальнейшей фильтрации его перед подачей на электролиз, к увеличению времени пробега электролизеров с фильтрующей диафрагмой, к повышению качества каустической соды. In addition, increasing the degree of purification of the brine leads to lower costs at the stage of further filtering it before being fed to the electrolysis, to an increase in the travel time of electrolyzers with a filtering diaphragm, and to an increase in the quality of caustic soda.
Источники информации
1. Якименко Л.М. Получение водорода, кислорода и щелочей. М. -Химия. - 1981. - c. l97-219.Sources of information
1. Yakimenko L.M. Obtaining hydrogen, oxygen and alkalis. M. - Chemistry. - 1981. - c. l97-219.
2. Авторское свидетельство СССР 412145, кл. С 01 D 3/16, 1971. 2. Copyright certificate of the USSR 412145, cl. C 01 D 3/16, 1971.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU99126214/12A RU2179952C2 (en) | 1999-12-14 | 1999-12-14 | Solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU99126214/12A RU2179952C2 (en) | 1999-12-14 | 1999-12-14 | Solution |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RU99126214A RU99126214A (en) | 2001-09-20 |
| RU2179952C2 true RU2179952C2 (en) | 2002-02-27 |
Family
ID=20228059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RU99126214/12A RU2179952C2 (en) | 1999-12-14 | 1999-12-14 | Solution |
Country Status (1)
| Country | Link |
|---|---|
| RU (1) | RU2179952C2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2547499C2 (en) * | 2013-03-19 | 2015-04-10 | Елена Викторовна Ульрих | Polyacrylamide-based flocculant for purifying natural water and waste water from oil refineries |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3816592A (en) * | 1970-11-21 | 1974-06-11 | Montedison Spa | Process for the purification of raw sodium chloride brines |
| RU2036838C1 (en) * | 1992-03-17 | 1995-06-09 | Чебоксарское производственное объединение "Химпром" | Method for purification of sodium chloride |
| RU2105727C1 (en) * | 1993-12-28 | 1998-02-27 | Акционерное общество "Всероссийский научно-исследовательский и проектный институт галургии" | Method of clarifying salt solutions emerging under silvinite ore processing |
-
1999
- 1999-12-14 RU RU99126214/12A patent/RU2179952C2/en not_active IP Right Cessation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3816592A (en) * | 1970-11-21 | 1974-06-11 | Montedison Spa | Process for the purification of raw sodium chloride brines |
| RU2036838C1 (en) * | 1992-03-17 | 1995-06-09 | Чебоксарское производственное объединение "Химпром" | Method for purification of sodium chloride |
| RU2105727C1 (en) * | 1993-12-28 | 1998-02-27 | Акционерное общество "Всероссийский научно-исследовательский и проектный институт галургии" | Method of clarifying salt solutions emerging under silvinite ore processing |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2547499C2 (en) * | 2013-03-19 | 2015-04-10 | Елена Викторовна Ульрих | Polyacrylamide-based flocculant for purifying natural water and waste water from oil refineries |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4839003A (en) | Process for producing alkali hydroxide, chlorine and hydrogen by the electrolysis of an aqueous alkali chloride solution in a membrane cell | |
| CN113582415A (en) | Desalination treatment method of reverse osmosis concentrated water | |
| CN109095732A (en) | A kind of technique based on magnesium processes desulfurization wastewater high-purity magnesium hydroxide | |
| JPWO2010098492A1 (en) | Active metal salt flocculant and method for producing the same | |
| CN104261443A (en) | Process for calcium-method production of magnesium hydrate by using nanofiltration membrane | |
| RU2179952C2 (en) | Solution | |
| CN106186556B (en) | A kind of method of ozone Oxidation Treatment chlopyrifos production waste water | |
| RU2176616C2 (en) | Method of purifying sodium chloride solution | |
| CN109095731B (en) | A method for preparing high-purity magnesium hydroxide based on a system for preparing high-purity magnesium hydroxide from magnesium-based desulfurization wastewater | |
| RU2173298C1 (en) | Sodium chloride purification process | |
| JP5167448B2 (en) | Method for removing calcium and magnesium ions in water | |
| RU2283282C1 (en) | Soda ash production process | |
| RU2169116C1 (en) | Method of purifying sodium chloride solution | |
| CN103754828A (en) | Sodium dichromate closed circulation clean production method for preparing sodium chlorate | |
| CA1329917C (en) | Process for the production of alkali metal chlorate | |
| CN105905927B (en) | A kind of Galuber's salt type brine removes the bittern purifying device and method of strontium element | |
| WO2010050668A2 (en) | Method for preparing high purity copper oxide containing a trace amount of chlorine from waste liquid containing cu(nh3)4cl2 | |
| SU1562325A1 (en) | Method of softening natural water | |
| US2516987A (en) | Method of producing purified brine | |
| RU2477256C2 (en) | Method of producing industrial brine | |
| CN116854275B (en) | Treatment methods for wastewater from sucralose production | |
| RU2347746C2 (en) | Method of producing brine for electrolysis | |
| RU2128147C1 (en) | Method of removing hardness ions from water | |
| RU2755300C1 (en) | Method for extracting highly dispersed titanium (iv) hydroxide from aqueous solutions | |
| SU768760A1 (en) | Method of liquid purification |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | The patent is invalid due to non-payment of fees |
Effective date: 20051215 |