SU479727A1 - The method of obtaining sodium polyphosphate limited solubility - Google Patents
The method of obtaining sodium polyphosphate limited solubilityInfo
- Publication number
- SU479727A1 SU479727A1 SU1887396A SU1887396A SU479727A1 SU 479727 A1 SU479727 A1 SU 479727A1 SU 1887396 A SU1887396 A SU 1887396A SU 1887396 A SU1887396 A SU 1887396A SU 479727 A1 SU479727 A1 SU 479727A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- sodium polyphosphate
- limited solubility
- obtaining sodium
- solubility
- phosphate
- Prior art date
Links
- 238000000034 method Methods 0.000 title description 3
- 235000019830 sodium polyphosphate Nutrition 0.000 title description 3
- 229910000403 monosodium phosphate Inorganic materials 0.000 description 3
- 235000019799 monosodium phosphate Nutrition 0.000 description 3
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 description 3
- 239000001488 sodium phosphate Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 229910000389 calcium phosphate Inorganic materials 0.000 description 1
- 235000011010 calcium phosphates Nutrition 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- GVALZJMUIHGIMD-UHFFFAOYSA-H magnesium phosphate Chemical class [Mg+2].[Mg+2].[Mg+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O GVALZJMUIHGIMD-UHFFFAOYSA-H 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- -1 monosubstituted phosphate Chemical class 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Description
Мононатрийфосфат содержит 67,9% п тпокиси фосфора. Monosodium phosphate contains 67.9% of phosphorus toxicity.
Как видно из таблицы, полифосфат натри , полученный предлагаемым способом, отвечает предъ вл емым к нему требовани м (63,5% Р205; рН 1%-ного водного раствора 7,65; растворимость при 20 н 70° С составл ет 4,96 и 3,37% соответственно).As can be seen from the table, sodium polyphosphate obtained by the proposed method meets the requirements imposed on it (63.5% P205; pH of a 1% aqueous solution is 7.65; solubility at 20 n 70 ° C is 4.96 and 3.37% respectively).
П,. В ipea-KTOp с мешал.кой и паровой ру|баш1кой заливают 60 л воды и загружают 93 кг фоофорвой -кислоту в .пересчете «а 100%-лую НзР04), при перемешИ1ва.нии .небольшими порци ми прибавл ют 2,2 кг углекислого Кальци и 2 кг углекислого магни , пр01вод т нейтрализацию при 80° С в течение 2Q мин. По о-комчаиии .растворени прибавл ют небольшими порци ми 47 кг кальцинированной соды. Раствор мононатрийфосфата, содерлсащий 70 г/л Са(Н2РО4)2 и 70 г/л Mg(H2P04)2, непрерывно подают в полимеризационную лечь непрерывного действи (расчет дан на 100 кг готового продукта). Производительность задаетс временем пребывани плава в печи, которое регулируетс скоростью подачи раствора в печь. Образующийс плав нолифосфата иатри непрерывно сливают на охлаждаемую водой металлическую поверхность и в виде кусков подают на упаковку,P,. In ipea-KTOp with a mixer and a steam tank, 60 liters of water are poured and 93 kg are charged with a form-acid, in terms of a 100% pure HzP04), and 2.2 kg are added in small portions. Calcium carbonate and 2 kg of magnesium carbonate, neutralize at 80 ° C for 2Q minutes. By dissolving the solution, 47 kg of soda ash are added in small portions. The monosodium phosphate solution, containing 70 g / l Ca (H2PO4) 2 and 70 g / l Mg (H2P04) 2, is continuously fed to a continuous polymerization cure (calculated on 100 kg of the finished product). The capacity is determined by the residence time of the melt in the furnace, which is controlled by the feed rate of the solution to the furnace. The resulting melt nolyphosphate iatri is continuously poured onto a water-cooled metal surface and served in the form of pieces on the packaging,
Предмет изобретени Subject invention
Способ .получени полифосфата натри ограниченной растворимости путем термической дегидратации и полимеризации монофосфата натри при 750-850° С, отличающийс тем, что, с целью уменьшени растворимости продукта, пол: мер; зацию монофосфата натри ведут в присутствии смеси однозамещенных фосфорнокислых солей кальци и магни , содержащей преимущественно 3-5% однозамещенного фосфорнокислогоThe method of obtaining limited sodium polyphosphate solubility by thermal dehydration and polymerization of sodium monophosphate at 750-850 ° C, characterized in that, in order to reduce the solubility of the product, sex: measures; sodium monophosphate is carried out in the presence of a mixture of calcium phosphate and magnesium phosphate salts, containing mainly 3-5% of monosubstituted phosphate
кальци и 2,5-3,5% однозамещенного фосфорнокислого магни .calcium and 2.5-3.5% monosodium phosphate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1887396A SU479727A1 (en) | 1973-02-23 | 1973-02-23 | The method of obtaining sodium polyphosphate limited solubility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1887396A SU479727A1 (en) | 1973-02-23 | 1973-02-23 | The method of obtaining sodium polyphosphate limited solubility |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU479727A1 true SU479727A1 (en) | 1975-08-05 |
Family
ID=20543700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU1887396A SU479727A1 (en) | 1973-02-23 | 1973-02-23 | The method of obtaining sodium polyphosphate limited solubility |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU479727A1 (en) |
-
1973
- 1973-02-23 SU SU1887396A patent/SU479727A1/en active
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