SU1520059A1 - Method of producing feed diammonium phosphate - Google Patents
Method of producing feed diammonium phosphate Download PDFInfo
- Publication number
- SU1520059A1 SU1520059A1 SU864149370A SU4149370A SU1520059A1 SU 1520059 A1 SU1520059 A1 SU 1520059A1 SU 864149370 A SU864149370 A SU 864149370A SU 4149370 A SU4149370 A SU 4149370A SU 1520059 A1 SU1520059 A1 SU 1520059A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- dap
- extraction
- degree
- mother liquor
- epa
- Prior art date
Links
- 235000019838 diammonium phosphate Nutrition 0.000 title claims abstract description 17
- 239000005696 Diammonium phosphate Substances 0.000 title claims abstract description 12
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 title claims abstract description 12
- 229910000388 diammonium phosphate Inorganic materials 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 title claims abstract description 6
- 238000000605 extraction Methods 0.000 claims abstract description 11
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000012452 mother liquor Substances 0.000 claims abstract description 8
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 6
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 6
- 239000011737 fluorine Substances 0.000 claims abstract description 5
- 239000012535 impurity Substances 0.000 claims abstract description 5
- 238000000926 separation method Methods 0.000 claims abstract description 5
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 4
- 238000001704 evaporation Methods 0.000 claims description 4
- 230000008020 evaporation Effects 0.000 claims description 4
- 238000002425 crystallisation Methods 0.000 claims 1
- 230000008025 crystallization Effects 0.000 claims 1
- 238000001035 drying Methods 0.000 claims 1
- 238000001914 filtration Methods 0.000 claims 1
- 239000013078 crystal Substances 0.000 abstract description 5
- 239000000047 product Substances 0.000 abstract description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 abstract description 2
- 229910019142 PO4 Inorganic materials 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 235000021317 phosphate Nutrition 0.000 abstract description 2
- 150000003013 phosphoric acid derivatives Chemical class 0.000 abstract description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 abstract 1
- 239000012467 final product Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 9
- 239000011550 stock solution Substances 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Изобретение относитс к технологии получени кормовых фосфатов аммони и позвол ет увеличить степень извлечени P2O5 из ЭФК в готовый продукт при сохранении его высокого качества. Согласно предлагаемому способу экстракционную фосфорную кислоту смешивают с маточным раствором, полученным после отделени кристаллов диаммонийфосфата (ДАФ), и нейтрализуют газообразным аммиаком (PH 7,6-8,2). образовавшуюс пульпу фильтруют с отделением примесей, а полученный раствор ДАФ упаривают под вакуумом при 65°С до концентрации P2O5 не более 33 мас.%, отдел ют кристаллы ДАФ, а маточный раствор направл ют на стадию нейтрализации ЭФК. Способ позвол ет повысить степень извлечени P2O5 до 72% при сохранении качества продукта по фтору (не более 0,05%). 1 табл.The invention relates to the technology of producing ammonium feed phosphates and allows increasing the degree of extraction of P 2 O 5 from EPA to the final product while maintaining its high quality. According to the proposed method, extraction phosphoric acid is mixed with the mother liquor obtained after separation of diammonium phosphate crystals (DAP), and neutralized with gaseous ammonia (PH 7.6-8.2). the resulting pulp is filtered to remove impurities, and the resulting DAP solution is evaporated under vacuum at 65 ° C to a P 2 O 5 concentration of not more than 33 wt.%, the DAP crystals are separated, and the mother liquor is sent to the EPA neutralization stage. The method allows to increase the degree of extraction of P 2 O 5 to 72% while maintaining the quality of the product on fluorine (no more than 0.05%). 1 tab.
Description
Изобретение относитс к технологии получени кормовых фосфатов аммони , которые широко примен ютс в животноводстве.This invention relates to a technology for producing ammonium feed phosphates, which are widely used in animal husbandry.
Целью изобретени вл етс увеличение степени извлечени из ЭФК в готовый продукт при сохранении его качестваThe aim of the invention is to increase the degree of extraction from EPA to the finished product while maintaining its quality.
Способ получени кормового диаммонийфосфата (ДАФ) осуществл ют путем нейтрализации экстракционной фосфорной кислоты (ЗФК) газообразным аммиаком до рН 7,6-8,2, отдел ют примеси , упаривают до концентрации не более 33% , кристаллизуют ДАФ, отдел ют его от маточного раствора и сушат, а маточный раствор возвращают на стадию нейтрализации ЭФК.The method of obtaining feed diammonium phosphate (DAP) is carried out by neutralizing the extraction phosphoric acid (PFC) with gaseous ammonia to pH 7.6-8.2, the impurities are separated, evaporated to a concentration of not more than 33%, DAF is crystallized, separated from the mother liquor and dried, and the mother liquor is returned to the stage of neutralization of EPA.
Пример. ЭФК, содержащую,г/л: 255; Fe 5,5; Al 3,3; F 17,смешивают с таким же объемом предварительно полученного маточного раствора после отделени кристаллов ДАЛ. В маточном растворе содержитс 323 г/л Р-2.05 и 21,5 г/л F. Полученный после смешени раствор нейтрапи- зуют газообразным аммиаком до рН 8, Из образовавшейс пульпы отфильтровывают выпавшие в осадок примеси,, Масса полученного осадка, приход ща с на 1 л ЭФК, 149 г о В осадке содержитс 33,8 мас„% и 11 масо% F. Отфильтрованный раствор, представл ющий собой раствор ДАФ, содержит 259 г/л и 10,5 г/л F,Example. EPA containing, g / l: 255; Fe 5.5; Al 3.3; F 17 is mixed with the same volume of previously prepared stock solution after the separation of DAL crystals. The mother liquor contains 323 g / l P-2.05 and 21.5 g / l F. The solution obtained after mixing is neutralized with gaseous ammonia to pH 8. The precipitated impurities are filtered out from the resulting pulp. per liter of EPA, 149 g o The sediment contains 33.8% by weight% and 11% by weight F. The filtered solution, which is a solution of DAP, contains 259 g / l and 10.5 g / l F,
Дл кристаллизации ДАФ полученный раствор упаривают под вакуумом при 65°С до концентрации пульпе 31 масо%о Далее полученные кристаллы отфильтровьгаают от раствора и сушат.To crystallize DAP, the resulting solution is evaporated under vacuum at 65 ° C until the concentration of the pulp is 31% by weight. Next, the resulting crystals are filtered from the solution and dried.
СПSP
кto
елate
соwith
Масса полученных кристаллов ДАФ 327 г, а объем отфильтрованного маточного раствора 1,05 Ло Кристаллический ДАФ содержат 52,3% 0,04% F, что удовлетвор ет требовани м ГОСТ 19651-74 на кормовой ДАФо При этом степень извлечени PjOy из ЭФК в готовый продукт 69%оThe mass of the obtained DAP crystals is 327 g, and the volume of the filtered stock solution of 1.05 Lo Crystal DAP contains 52.3% 0.04% F, which satisfies the requirements of GOST 19651-74 on feed DAPo. In this case, the degree of extraction of PjOy from EPA into the finished product 69% o
В таблице приведены примеры осуществлени способа при различных концентраци х PjO в упаренном растворThe table shows examples of the implementation of the method at different concentrations of PjO in one stripped off solution.
Из анализа таблицы следует,что упаривание раствора до,34% приводит к увеличению степени извлечени фосфора из ЭФК в ДАФ до 73% (вместо 72% при 33% ),однако,содержание фтора в продукционном ДАФ при этом возрастает до 0,07%, что превьшает допустимые значени ГОСТеFrom the analysis of the table it follows that evaporation of the solution to, 34% leads to an increase in the degree of extraction of phosphorus from EPA in DAP to 73% (instead of 72% at 33%), however, the fluorine content in the production DAP at the same time increases to 0.07%, which exceeds the permissible values of GOST
Таким образом, подача маточного раствора после отделени кристаллического ДАФ на стадию нейтрализации ЭФК приводит к изменению условий образовани примесного осадка при нейтрализации за счет того , что концентраци фтора в аммонизированном растворе увеличиваетс о В результате это го измен етс состав примесного осадThus, the supply of the mother liquor after the separation of crystalline DAP at the stage of neutralization of EPA leads to a change in the conditions for the formation of an impurity precipitate during neutralization due to the fact that the concentration of fluorine in the ammoniated solution increases o As a result,
ка: содержание фтора в нем возрастает примерно в 1,5 раза, а содержание PjOj уменьп1аетс на 10-20%о Благодар этому происходит увеличение степени извлечени из ЭФК в продукт . Исследование же того, что упаривание аммонизированного раствора ведут до концентрации не более 33 масо%, при высокой степени извлечени сохран етс качество продуктаka: the fluorine content in it increases by about 1.5 times, and the content of PjOj decreases by 10–20%. Due to this, there is an increase in the degree of extraction from EPA to the product. The study of the fact that the evaporation of the ammoniated solution is carried out to a concentration of not more than 33% by weight, with a high degree of recovery, the quality of the product is preserved
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU864149370A SU1520059A1 (en) | 1986-08-19 | 1986-08-19 | Method of producing feed diammonium phosphate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU864149370A SU1520059A1 (en) | 1986-08-19 | 1986-08-19 | Method of producing feed diammonium phosphate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1520059A1 true SU1520059A1 (en) | 1989-11-07 |
Family
ID=21268362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU864149370A SU1520059A1 (en) | 1986-08-19 | 1986-08-19 | Method of producing feed diammonium phosphate |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1520059A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101857465A (en) * | 2010-05-25 | 2010-10-13 | 瓮福（集团）有限责任公司 | Production method of low-fluoride granular monoammonium phosphate product |
| CN101857466A (en) * | 2010-05-25 | 2010-10-13 | 瓮福（集团）有限责任公司 | Production method of low-fluoride granular diammonium phosphate product |
-
1986
- 1986-08-19 SU SU864149370A patent/SU1520059A1/en active
Non-Patent Citations (1)
| Title |
|---|
| Авторское свидетельство СССР № 906976, кл. С 05 В 7/00, С 01 В 25/28, 1982. * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101857465A (en) * | 2010-05-25 | 2010-10-13 | 瓮福（集团）有限责任公司 | Production method of low-fluoride granular monoammonium phosphate product |
| CN101857466A (en) * | 2010-05-25 | 2010-10-13 | 瓮福（集团）有限责任公司 | Production method of low-fluoride granular diammonium phosphate product |
| CN101857465B (en) * | 2010-05-25 | 2013-05-22 | 瓮福（集团）有限责任公司 | Production method of low-fluoride granular monoammonium phosphate product |
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