SU246489A1 - METHOD OF OBTAINING SODIUM PHOSPHITE - Google Patents
METHOD OF OBTAINING SODIUM PHOSPHITEInfo
- Publication number
- SU246489A1 SU246489A1 SU1173475A SU1173475A SU246489A1 SU 246489 A1 SU246489 A1 SU 246489A1 SU 1173475 A SU1173475 A SU 1173475A SU 1173475 A SU1173475 A SU 1173475A SU 246489 A1 SU246489 A1 SU 246489A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- phosphite
- sodium
- sodium phosphite
- obtaining sodium
- solution
- Prior art date
Links
- YPPQYORGOMWNMX-UHFFFAOYSA-L sodium phosphonate pentahydrate Chemical compound [Na+].[Na+].[O-]P([O-])=O YPPQYORGOMWNMX-UHFFFAOYSA-L 0.000 title description 6
- AQSJGOWTSHOLKH-UHFFFAOYSA-N Phosphite Chemical compound [O-]P([O-])[O-] AQSJGOWTSHOLKH-UHFFFAOYSA-N 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-N Carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N HCl Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 2
- 150000001342 alkaline earth metals Chemical class 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- KEAYESYHFKHZAL-UHFFFAOYSA-N sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000001187 sodium carbonate Substances 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010069173 Product contamination Diseases 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L cacl2 Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- -1 calcium Chemical compound 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- ACVYVLVWPXVTIT-UHFFFAOYSA-M phosphinate Chemical class [O-][PH2]=O ACVYVLVWPXVTIT-UHFFFAOYSA-M 0.000 description 1
- 150000003018 phosphorus compounds Chemical class 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- XWKBMOUUGHARTI-UHFFFAOYSA-N tricalcium;diphosphite Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])[O-].[O-]P([O-])[O-] XWKBMOUUGHARTI-UHFFFAOYSA-N 0.000 description 1
Description
Изобретение относитс к получению соединений фосфора.The invention relates to the preparation of phosphorus compounds.
Известен способ получени фосфита натри путем обработки фосфита кальци сначала сол ной кислотой, а затем гидроокисью натри .A known method for producing sodium phosphite is by treating calcium phosphite first with hydrochloric acid and then sodium hydroxide.
В результате загр знени конечного продукта хлористым натрием и хлористым кальцием невозможно получение данным сиособом чистого фосфита натри .As a result of the final product contamination with sodium chloride and calcium chloride, it is impossible to obtain pure sodium phosphite by this method.
С целью получени продукта реактивной квалификации и проведени процесса в одну стадию предлагаетс фосфит щелочноземельного металла, например кальци , обрабатывать раствором соды при температуре не ниже 70°С и соотношении Ж : Т, равном 5,5: 1. Соду примен ют в количестве не более 75о/о от теоретически необходимого.For the purpose of obtaining a product of reactive qualification and carrying out the process in one stage, an alkaline earth metal phosphite, such as calcium, is offered to be treated with a solution of soda at a temperature not lower than 70 ° C and a ratio W: T of 5.5: 1. Soda is used in an amount not more than 75o / o from the theoretically necessary.
В качестве исходного фосфитосодержащего продукта может быть использован шлам производства гипофосфитов.As the source phosphite product can be used sludge production of hypophosphites.
Пример 1. 200 г шлама, содержащего 44,10/0 СаНРО;з 1,5 и 45,8о/о НоО, смешивают с 31,8 г соды (в пересчете на Ма-зСОз) и 667 мл воды. После перемешивани в течение 1 час при 70°С и фильтрации пульпы получают 600 мл раствора с концентрацией примерно 8-9о/о ЫааПРОзХБНаО.Example 1. 200 g of sludge containing 44.10 / 0 SanHRO, C 1.5 and 45.8 ° / o Noo, are mixed with 31.8 g of soda (in terms of Ma-CSC) and 667 ml of water. After stirring for 1 hour at 70 ° C and filtering the pulp, 600 ml of a solution with a concentration of about 8-9 ° / o NaAAPROZCHBNaO are obtained.
При упарке раствора до уд. в. 1,4 г/смполучают 50 г кристаллического фосфита натри , соответствующего по качеству требовани м на реактивный фосфит.When removing the solution to beats. at. 1.4 g / cm gives 50 g of crystalline sodium phosphite, which is of the same quality as the reactive phosphite.
Пример 2. 20 кг шлама с содержанием 520/0 СаПРОз смешивают с 3,7 кг углекислого натри (95з/о NaeCO,) и 50 л воды. Получают 42 л раствора с содержанием 10-/о NaJiPOa X 5ПзО (удельный вес раствора 1,06 г/сл13).Example 2. 20 kg of sludge with a content of 520/0 CaPROZ is mixed with 3.7 kg of sodium carbonate (953 / o NaeCO) and 50 l of water. Get 42 l of the solution with the content of 10- / about NaJiPOa X 5PzO (specific gravity of the solution is 1.06 g / sl13).
При упаривании части раствора получают 2 кг кристаллического фосфита натри с содержанием 95,1 о/о КЯоПРОлХБНаО.By evaporation of a part of the solution, 2 kg of crystalline sodium phosphite are obtained with a content of 95.1 v / v of KAaPROLXBaO.
Предмет изобретени Subject invention
1.Способ получени фосфита натри из фосфита щелочноземельного металла, например кальци , и натрийсодержащего соединени , отличающийс тем, что, с целью повышени степени чистоты продукта н упрощени способа, в качестве натрийсодержащего продукта берут карбонат натри и нроцесс осуществл ют при температуре не нпже 70°С и соотношении Ж:Т пор дка 5,5: 1.1. A method of producing sodium phosphite from an alkaline earth metal phosphite, for example calcium, and a sodium-containing compound, characterized in that, in order to increase the purity of the product and simplify the process, sodium carbonate is taken as the sodium-containing product and the process is carried out at a temperature not higher than 70 ° The ratio of W: T is 5.5: 1.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU246489A1 true SU246489A1 (en) |
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