SU161699A1 - - Google Patents
Info
- Publication number
- SU161699A1 SU161699A1 SU930093A SU930093A SU161699A1 SU 161699 A1 SU161699 A1 SU 161699A1 SU 930093 A SU930093 A SU 930093A SU 930093 A SU930093 A SU 930093A SU 161699 A1 SU161699 A1 SU 161699A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- fluoride
- bifluoride
- sodium
- ammonium
- solution
- Prior art date
Links
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 12
- BFXAWOHHDUIALU-UHFFFAOYSA-M sodium;hydron;difluoride Chemical compound F.[F-].[Na+] BFXAWOHHDUIALU-UHFFFAOYSA-M 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 235000013024 sodium fluoride Nutrition 0.000 description 6
- 239000011775 sodium fluoride Substances 0.000 description 6
- MIMUSZHMZBJBPO-UHFFFAOYSA-N 6-methoxy-8-nitroquinoline Chemical compound N1=CC=CC2=CC(OC)=CC([N+]([O-])=O)=C21 MIMUSZHMZBJBPO-UHFFFAOYSA-N 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- DDFHBQSCUXNBSA-UHFFFAOYSA-N 5-(5-carboxythiophen-2-yl)thiophene-2-carboxylic acid Chemical compound S1C(C(=O)O)=CC=C1C1=CC=C(C(O)=O)S1 DDFHBQSCUXNBSA-UHFFFAOYSA-N 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000012452 mother liquor Substances 0.000 description 2
- LDDQLRUQCUTJBB-UHFFFAOYSA-N ammonium fluoride Chemical compound [NH4+].[F-] LDDQLRUQCUTJBB-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Description
Известен способ получени бифторида натри взаи модействием фтористого натри со смесью растворов фторида и бифторида аммони .A known method for producing sodium bifluoride is the interaction of sodium fluoride with a mixture of solutions of fluoride and ammonium bifluoride.
Предлагаемый способ предусматривает получение бифторида натри взаимодействием фтористого натри со смесью растворов фторида и бифторида аммони при температуре ниже 40°С.The proposed method involves obtaining sodium bifluoride by reacting sodium fluoride with a mixture of solutions of fluoride and ammonium bifluoride at a temperature below 40 ° C.
Преимущество предложенного способа - з 1ачительное снижение коррозии аппаратуры, благодар снижению температуры проведени процесса.The advantage of the proposed method is a significant reduction in corrosion of the equipment, due to a decrease in the temperature of the process.
Предлагаемый способ получени бифторида натри основан на следующих реакци х:The proposed method of producing sodium bifluoride is based on the following reactions:
2NH4F Nn4HF2-fNH3 Nn4HF2 + NaF NaHF2 + NH4F2NH4F Nn4HF2-fNH3 Nn4HF2 + NaF NaHF2 + NH4F
Пример. В выпарной аппарат подают 733 г 12%-ного раствора фтористого аммони и 2673 г маточного раствора от фильтрации бифторида натри , состо щего из 35,7% Nn4F; 16,0% Nn4nF2 и 48,3% П,О. Выпарку производ т при атмосферном давлении и температуре 130°С. Получают 1416 г пара, содержащего 6% NH:i и 1990 г упаренного раствора (33,7%-Nn4F; 35,8% - Nn4HF., и 30,5% ПоО).Example. 733 g of a 12% ammonium fluoride solution and 2673 g of mother liquor from filtration of sodium bifluoride consisting of 35.7% of Nn4F; 16.0% Nn4nF2 and 48.3% P, O. The residue was produced at atmospheric pressure and a temperature of 130 ° C. 1416 g of steam are obtained, containing 6% NH: i and 1990 g of the evaporated solution (33.7% -Nn4F; 35.8% - Nn4HF., And 30.5% Poo).
Дл получени бифторида натри упаренный раствор разбавл ют 783 г исходного 12%-ного раствора фтористого аммони и к нолученному раствору добавл ют 245 г фтористого натри . Суспензию перемешивают в течение I-2 час при 25°С. При этом образуетс 310 г бифторида натри , который вместе с избытком фтористого натри (35 г) отдел ют от маточного раствора, возвращаемого на выпарку.To obtain sodium bifluoride, the stripped-off solution was diluted with 783 g of the starting 12% ammonium fluoride solution, and 245 g of sodium fluoride was added to the resulting solution. The suspension is stirred for 1-2 hours at 25 ° C. This forms 310 g of sodium bifluoride, which, together with an excess of sodium fluoride (35 g), is separated from the mother liquor that is returned for evaporation.
Предмет изобретени Subject invention
Способ получени бифторида натри взаимодействием фтористого натри со смесью растворов фторида и бифторида аммони , отличающийс тем, что, с целью упрощени способа и снижени коррозии аппаратуры , процесс ведут при температуре ниже 40°С.A method of producing sodium bifluoride by reacting sodium fluoride with a mixture of fluoride and ammonium bifluoride solutions, characterized in that, in order to simplify the process and reduce equipment corrosion, the process is conducted at a temperature below 40 ° C.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU161699A1 true SU161699A1 (en) |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4144315A (en) * | 1976-08-26 | 1979-03-13 | Goulding Chemicals Limited | Production of hydrogen fluoride |
| US4748015A (en) * | 1986-10-10 | 1988-05-31 | Wladyslaw Augustyn | Method of complex production of sodium bifluoride, active sodium fluoride, hydrogen fluoride and potassium nitrate |
| RU2415810C1 (en) * | 2009-10-12 | 2011-04-10 | Государственное образовательное учреждение высшего профессионального образования Томский политехнический университет | Method of producing sodium hydrofluoride |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4144315A (en) * | 1976-08-26 | 1979-03-13 | Goulding Chemicals Limited | Production of hydrogen fluoride |
| US4748015A (en) * | 1986-10-10 | 1988-05-31 | Wladyslaw Augustyn | Method of complex production of sodium bifluoride, active sodium fluoride, hydrogen fluoride and potassium nitrate |
| RU2415810C1 (en) * | 2009-10-12 | 2011-04-10 | Государственное образовательное учреждение высшего профессионального образования Томский политехнический университет | Method of producing sodium hydrofluoride |
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