SU508470A1 - Method of defluorinating phosphoric acid solutions - Google Patents
Method of defluorinating phosphoric acid solutionsInfo
- Publication number
- SU508470A1 SU508470A1 SU1958994A SU1958994A SU508470A1 SU 508470 A1 SU508470 A1 SU 508470A1 SU 1958994 A SU1958994 A SU 1958994A SU 1958994 A SU1958994 A SU 1958994A SU 508470 A1 SU508470 A1 SU 508470A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- phosphoric acid
- acid solutions
- defluorinating
- atm
- defluorinating phosphoric
- Prior art date
Links
Description
1one
Изобретение относитс к области обесфторивани фосфорнокислых растворов и может найти применение при обесфторивании экстракционной фосфорной кислоты, а также растворов солей в фосфорной кислоте.The invention relates to the field of defluorinating phosphoric acid solutions and can be used in the defluorization of extraction phosphoric acid, as well as solutions of salts in phosphoric acid.
Известен способ обесфторивани фосфорнокислых растворов путем нагревани их до температуры 150-260°С острым паром. Длительность процесса 3-5 час.There is a known method for defluorinating phosphate solutions by heating them with live steam to a temperature of 150-260 ° C. The duration of the process is 3-5 hours.
С целью интенсификации процесса обесфторивани предлагаетс процесс осуществл ть при давлении 3-12 ата, с последующим дросселированием раствора со скоростью 15- 25 м/сек при перепаде давлени атм.In order to intensify the process of defluorization, a process is proposed to be carried out at a pressure of 3-12 atm, followed by throttling of the solution at a speed of 15-25 m / s at a pressure drop of atm.
Пример. Раствор экстракционной фосфорной кислоты, содержащей 28% PgOs и 1,45% фтора, нагревают под давлением 5 ата острым паром, имеющим температуру 160°С.Example. An extraction phosphoric acid solution containing 28% PgOs and 1.45% fluorine is heated under pressure of 5 atm with live steam having a temperature of 160 ° C.
При температуре раствора 145°С его дросселируют в пустой сосуд с атмосферным давлением . Выдел ющиес пар и фтористые газы непрерывно отвод т.At a solution temperature of 145 ° C, it is throttled into an empty vessel with atmospheric pressure. Exhaust vapor and fluoride gases are continuously removed.
Обесфторенна кислота имеет температуру 105С и содержит 27,6% PjOs и 0,6% фтора. Расход пара составл ет 0,14 кг на 1 кг кислоты . Продолжительность процесса не более 3 мин.Obfluoric acid has a temperature of 105 ° C and contains 27.6% PjOs and 0.6% fluorine. The steam consumption is 0.14 kg per kg acid. The duration of the process is not more than 3 minutes.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1958994A SU508470A1 (en) | 1973-09-21 | 1973-09-21 | Method of defluorinating phosphoric acid solutions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1958994A SU508470A1 (en) | 1973-09-21 | 1973-09-21 | Method of defluorinating phosphoric acid solutions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU508470A1 true SU508470A1 (en) | 1976-03-30 |
Family
ID=20564414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU1958994A SU508470A1 (en) | 1973-09-21 | 1973-09-21 | Method of defluorinating phosphoric acid solutions |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU508470A1 (en) |
-
1973
- 1973-09-21 SU SU1958994A patent/SU508470A1/en active
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