SU71385A1 - Method of concentrating extraction phosphoric acid - Google Patents
Method of concentrating extraction phosphoric acidInfo
- Publication number
- SU71385A1 SU71385A1 SU844-46A SU345382A SU71385A1 SU 71385 A1 SU71385 A1 SU 71385A1 SU 345382 A SU345382 A SU 345382A SU 71385 A1 SU71385 A1 SU 71385A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- phosphoric acid
- concentration
- extraction phosphoric
- evaporation
- concentrating extraction
- Prior art date
Links
Landscapes
- Silicon Compounds (AREA)
Description
В насто щее врем концентрирование фосфорной кислоты в аппаратах с паровым обогревом, осуществл етс в одну ступень. Это вызываетс наличием в кислоте примесей фтора, который в процессе концентрировани кислоты выдел етс в виде кремнефтористых паров, способных отлагать в трубопроводах обильные осадки, вызывающие остановку производства. При этом весь вторичный пар (вода, выпаренна из кислоты) не используетс , так как выдел ющиес при его конденсации осадки забивают поверхность нагрева.At present, the concentration of phosphoric acid in apparatus with steam heating is carried out in one step. This is caused by the presence of fluorine impurities in the acid, which, during the concentration of the acid, are released in the form of silicofluoride vapors, which can deposit abundant precipitations in the pipelines, causing production to stop. In this case, all the secondary vapor (water evaporated from the acid) is not used, since precipitates released during its condensation clog the heating surface.
Предлагаетс способ ступенчатого концентрировани фосфорной кислоты. Способ основан на том, что пары фтористого кремни выдел ютс из фосфорной кислоты только при определенной концентрации и температуре последней. В услови х упаривани фосфорной кислоты , полученной сернокислотным разложением апатитового концен трата, содержащего 23-25% РзОз. практическое выделение фтористого кремни имеет место при концентрации выще 35% Р2О5 при темпеОтв . редактор М. М. АкишинA method for the stepwise concentration of phosphoric acid is proposed. The method is based on the fact that silicon fluoride vapors are released from phosphoric acid only at a certain concentration and temperature of the latter. Under conditions of evaporation of phosphoric acid obtained by the sulfuric acid decomposition of the apatite concentration, containing 23–25% PcO3. practical release of fluoride silicon takes place at a concentration higher than 35% P2O5 at temperat. editor M. M. Akishin
ратуре 80° С. Следовательно, расчленив процесс выпаривани на две технологические ступени, причем в первой ступени упаривание производитс до 35% Р2О5 при температуре не выще 80° С, а во второй ступени до нужной концентрации, представл етс возможным вторичный пар первой ступени использовать в виде греющего пара.The temperature is 80 ° C. Consequently, splitting the evaporation process into two technological stages, with evaporation in the first stage up to 35% P2O5 at a temperature not higher than 80 ° C, and it is possible to use the first stage secondary steam in the second stage as a heating pair.
Реализаци разработанного способа обеспечивает значительное себестоимости упаривани фосфорной кислоты, так как основным элементом расхода на упаривание вл етс стоимость пара.The implementation of the developed method provides a significant cost for the evaporation of phosphoric acid, since the main element of the evaporation consumption is the cost of steam.
Предмет изобретени Subject invention
Способ концентрировани экстракционной фосфорной кислоты, отличающийс тем, что процесс ведут в две ступени, а именно , сначала упаривают до концентрации не выще 35-36% Р2О5 при температуре около 80° С, а затем направл ют ее на дальнейшее концентрирование с целью использовани вторичного пара первой ступени упаривани в качестве греющего пара.A method for concentrating extraction phosphoric acid, characterized in that the process is carried out in two steps, namely, first evaporated to a concentration of not more than 35-36% P2O5 at a temperature of about 80 ° C, and then directed to further concentration with the aim of using secondary steam first stage evaporation as heating steam.
Редактор А. Е. Никитскиб 10Editor A. E. Nikitskyb 10
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU844-46A SU71385A1 (en) | 1946-05-21 | 1946-05-21 | Method of concentrating extraction phosphoric acid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU844-46A SU71385A1 (en) | 1946-05-21 | 1946-05-21 | Method of concentrating extraction phosphoric acid |
Publications (1)
Publication Number | Publication Date |
---|---|
SU71385A1 true SU71385A1 (en) | 1947-11-30 |
Family
ID=52581037
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU844-46A SU71385A1 (en) | 1946-05-21 | 1946-05-21 | Method of concentrating extraction phosphoric acid |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU71385A1 (en) |
-
1946
- 1946-05-21 SU SU844-46A patent/SU71385A1/en active
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