SU432097A1 - Method of producing trimetaphosphate - Google Patents
Method of producing trimetaphosphateInfo
- Publication number
- SU432097A1 SU432097A1 SU1670472A SU1670472A SU432097A1 SU 432097 A1 SU432097 A1 SU 432097A1 SU 1670472 A SU1670472 A SU 1670472A SU 1670472 A SU1670472 A SU 1670472A SU 432097 A1 SU432097 A1 SU 432097A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- trimetaphosphate
- producing
- potassium
- acetic acid
- acetic anhydride
- Prior art date
Links
Description
1one
Изобретение относитс к области получени конденсированных фосфатов, в частности к способу получени триметафосфата кали .The invention relates to the field of producing condensed phosphates, in particular, to a method for producing potassium trimetaphosphate.
Известен способ получени триметафосфата кали путем нагревани гомогенного раствора однозамещенного фосфата кали в смеси дес тикратного избытка уксусной кислоты и уксусного ангидрида с весовым отношением 1 : 1 при 90°С в течение 24 часов.A method of producing potassium trimetaphosphate is known by heating a homogeneous solution of potassium phosphate in solution in a mixture of a ten-fold excess of acetic acid and acetic anhydride with a weight ratio of 1: 1 at 90 ° C for 24 hours.
С целью интенсификации процесса (сокращени времени проведени реакции до двух часов) предложено использовать твердый однозамещенный фосфат кали и нагревание вести до температуры около 115°С.In order to intensify the process (reducing the reaction time to two hours), it has been proposed to use solid potassium phosphate one-time and heat up to a temperature of about 115 ° C.
При этом количество израсходованных уксусного ангидрида и уксусной кислоты уменьшаетс в 6,5 раза по сравнению с известным способом.At the same time, the amount of consumed acetic anhydride and acetic acid is reduced 6.5 times compared with the known method.
Пример. Смесь 136 г Kl-bPOj, 155 мл лед ной уксусной кислоты и 155 мл уксусного ангидрида нагревают до 115°С и выдерживают смесь в течение 2 час при посто нном перемешивании . Полученный триметафосфат кали в виде твердой фазы отфильтровывают или центрифугируют и промывают 2 раза смесью уксусной кислоты и уксусного ангидрида. Степень превращени КН2РО4 в триметафосфат составл ет 93% в пересчете на Р2Оа.Example. A mixture of 136 g of Kl-bPOj, 155 ml of glacial acetic acid and 155 ml of acetic anhydride is heated to 115 ° C and the mixture is kept for 2 hours with constant stirring. The potassium trimetaphosphate obtained in the form of a solid is filtered off or centrifuged and washed 2 times with a mixture of acetic acid and acetic anhydride. The degree of conversion of KH2PO4 to trimetaphosphate is 93% in terms of P2Oa.
Предмет изобретени Subject invention
Способ получени триметафосфата кали путем дегидратации ортофосфата кали при нагревании в среде уксусной кислоты и уксусного ангидрида, отличающийс тем, что, с целью интенсификации нроцесса, ортофосфат кали берут в твердом виде, а нагревание ведут до темнературы около 115°С.The method of producing potassium trimetaphosphate by dehydrating potassium orthophosphate when heated in an environment of acetic acid and acetic anhydride, characterized in that, in order to intensify the process, potassium orthophosphate is taken in solid form, and the heating is carried out to a temperature of about 115 ° C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1670472A SU432097A1 (en) | 1971-06-21 | 1971-06-21 | Method of producing trimetaphosphate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1670472A SU432097A1 (en) | 1971-06-21 | 1971-06-21 | Method of producing trimetaphosphate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU432097A1 true SU432097A1 (en) | 1974-06-15 |
Family
ID=20479411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU1670472A SU432097A1 (en) | 1971-06-21 | 1971-06-21 | Method of producing trimetaphosphate |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU432097A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102897740A (en) * | 2012-11-14 | 2013-01-30 | 云南莱德福科技有限公司 | Production method and production equipment of potassium polymetaphosphate |
-
1971
- 1971-06-21 SU SU1670472A patent/SU432097A1/en active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102897740A (en) * | 2012-11-14 | 2013-01-30 | 云南莱德福科技有限公司 | Production method and production equipment of potassium polymetaphosphate |
| CN102897740B (en) * | 2012-11-14 | 2015-01-14 | 云南莱德福科技有限公司 | Production method and production equipment of potassium polymetaphosphate |
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