CN103663402A - Preparation method for high-viscosity potassium metaphosphate - Google Patents
Preparation method for high-viscosity potassium metaphosphate Download PDFInfo
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- CN103663402A CN103663402A CN201310566409.5A CN201310566409A CN103663402A CN 103663402 A CN103663402 A CN 103663402A CN 201310566409 A CN201310566409 A CN 201310566409A CN 103663402 A CN103663402 A CN 103663402A
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Abstract
The invention provides a preparation method for high-viscosity potassium metaphosphate. The preparation method comprises the following step: by taking potassium dihydrogen phosphate as an active ingredient, performing thermal dehydration polymerization to produce the high-viscosity potassium metaphosphate, wherein the potassium dihydrogen phosphate is prepared from potassium-containing raw materials and phosphorus-containing raw materials, the mole ratio of potassium in the potassium-containing raw materials to phosphorus in the phosphorus-containing raw materials is (0.88+/-0.04):1, and the polymerization temperature is at 550-600DEG C. The high-viscosity potassium metaphosphate with the viscosity of 32-35CPS can be finally obtained by improving the polymerization temperature in the preparation technology of the high-viscosity potassium metaphosphate and further limiting the mole ratio of the potassium in the potassium-containing raw materials to phosphorus in the phosphorus-containing raw materials for preparing potassium dihydrogen phosphate.
Description
Technical field
The present invention relates to chemical field, specifically, relate to a kind of preparation method of high viscosity Potassium polymetaphosphate.
Background technology
The industrial use of Potassium polymetaphosphate is extensive, is also usually used in foodstuff additive field, and it is slightly soluble in water, is soluble in sodium salt solution, forms the very high solution of viscosity.In meat gruel and meat product, this viscosity contributes to being knotted property, the compactness of product, has also strengthened the emulsifying property of product simultaneously.Practice shows, Potassium polymetaphosphate is applied as binding agent, and its product viscosity is higher, and performance is better.
Industrial at present, conventionally take potassium primary phosphate as raw material, there is intramolecular dehydration condensation reaction in heating, and the polymerization degree of finished product is got exhausted in the temperature and time of heating, and viscosity is relevant with polymerization temperature.European Countries is generally controlled at 6-16CPS by Potassium polymetaphosphate industrialization product viscosity index at present.
Summary of the invention
The preparation method who the object of this invention is to provide a kind of high viscosity Potassium polymetaphosphate.
In order to realize the object of the invention, the preparation method of a kind of high viscosity Potassium polymetaphosphate of the present invention, it is to take potassium primary phosphate as raw material, thermal dehydration polymerization generates; Wherein, described potassium primary phosphate, by preparing and obtain containing potassium raw material and phosphorous raw material, is 0.88 ± 0.04:1 containing the potassium in potassium raw material and the mol ratio of the phosphorus in phosphorous raw material;
During described polymerization, constant temperature remains on 550-600 ℃.
Wherein, containing potassium raw material, can be Repone K or potassium hydroxide; Phosphorous raw material can be phosphoric acid or Vanadium Pentoxide in FLAKES.
Preferably, polymerization temperature is 580 ℃, and polymerization constant temperature time is 6h.
In the embodiment of the present invention, utilize containing potassium raw material and phosphorous raw material and prepare potassium primary phosphate; Containing the potassium in potassium raw material and the mol ratio of the phosphorus in phosphorous raw material, be wherein 0.88 ± 0.04:1; And by the potassium primary phosphate making from normal temperature thermal dehydration progressively, 580 ℃ of constant temperature polymerizations, constant temperature time at least will be in more than 6 hours (constant temperature time be depending on adding the amount of thermal material and difference), and polymerization constant temperature time is longer, the polymerization degree is higher, and product viscosity is also just higher.Potassium primary phosphate is after heating, dehydration, polymerization, and can obtain viscosity is the full-bodied Potassium polymetaphosphate product of 32-35CPS.
By technique scheme, the present invention at least has following advantages and beneficial effect:
The present invention is by improving the polymerization temperature in high viscosity Potassium polymetaphosphate preparation technology, and while further defining raw materials potassium primary phosphate containing the potassium in potassium raw material and the mol ratio of the phosphorus in phosphorous raw material, finally obtaining viscosity is the full-bodied Potassium polymetaphosphate product of 32-35CPS.
Embodiment
Following examples are used for illustrating the present invention, but are not used for limiting the scope of the invention.If do not specialize, the conventional means that in embodiment, technique means used is well known to those skilled in the art, the raw materials used commercial goods that is.
The preparation of embodiment high viscosity Potassium polymetaphosphate
Containing the viscosity of mol ratio (hereinafter referred to as potassium/phosphorus mol ratio), material add-on, heating-up time, polymerization temperature, the constant temperature time of the potassium in potassium raw material and the phosphorus in phosphorous raw material and the high viscosity Potassium polymetaphosphate that makes in Table 1 and 2.
Table 1
Table 2
The preparation method of above-mentioned high viscosity Potassium polymetaphosphate is:
1) potassium primary phosphate raw material is dropped in polymerization furnace to heat temperature raising;
2) under polymerization temperature, constant temperature keeps the corresponding time, results end product;
3) carry out viscosity measurements.
The potassium primary phosphate of preparing by the ratio that is 0.88 ± 0.04:1 by the mol ratio of the potassium according to containing in potassium raw material and the phosphorus in phosphorous raw material, by normal temperature thermal dehydration progressively, and 550 ℃ of-600 ℃ of constant temperature polymerizations, constant temperature time at least will be at more than 6 hours (constant temperature time according to the difference of the amount of raw material potassium primary phosphate and difference), polymerization constant temperature time is longer, the polymerization degree is higher, and product viscosity is also just higher.Potassium primary phosphate is after heating, dehydration, polymerization, and can obtain viscosity is the full-bodied Potassium polymetaphosphate product of 32-35CPS.
Although above the present invention is described in detail with a general description of the specific embodiments, on basis of the present invention, can make some modifications or improvements it, this will be apparent to those skilled in the art.Therefore, these modifications or improvements, all belong to the scope of protection of present invention without departing from theon the basis of the spirit of the present invention.
Claims (4)
1. a preparation method for high viscosity Potassium polymetaphosphate, it is to take potassium primary phosphate as raw material, and thermal dehydration, polymerization generate, and it is characterized in that, and described potassium primary phosphate is by preparing and obtain containing potassium raw material and phosphorous raw material; Containing the potassium in potassium raw material and the mol ratio of the phosphorus in phosphorous raw material, be wherein 0.88 ± 0.04:1;
During described polymerization, constant temperature remains on 550-600 ℃.
2. preparation method according to claim 1, is characterized in that, dehydration, polymerization time are 6-12h.
3. preparation method according to claim 1 and 2, is characterized in that, polymerization temperature is 580 ℃.
4. preparation method according to claim 3, is characterized in that, polymerization constant temperature time is 6h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310566409.5A CN103663402B (en) | 2012-11-14 | 2013-11-14 | The preparation method of high-viscosity potassium metaphosphate |
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| CN 201210456814 CN102910610A (en) | 2012-11-14 | 2012-11-14 | Method for preparing high viscosity potassium polymetaphosphate |
| CN2012104568147 | 2012-11-14 | ||
| CN201210456814.7 | 2012-11-14 | ||
| CN201310566409.5A CN103663402B (en) | 2012-11-14 | 2013-11-14 | The preparation method of high-viscosity potassium metaphosphate |
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| CN103663402A true CN103663402A (en) | 2014-03-26 |
| CN103663402B CN103663402B (en) | 2015-08-26 |
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| CN201310566409.5A Active CN103663402B (en) | 2012-11-14 | 2013-11-14 | The preparation method of high-viscosity potassium metaphosphate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105692577A (en) * | 2015-11-09 | 2016-06-22 | 徐州恒世食品有限公司 | Continuous dynamic polymerization large-scale production method for high-viscosity non-caking potassium polymetaphosphate |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103564520B (en) * | 2013-11-21 | 2015-07-01 | 北京美添前景科技有限公司 | Efficient water-holding color retention agent for meat products, and preparing and using methods thereof |
| CN106348272B (en) * | 2016-09-23 | 2018-06-08 | 武汉工程大学 | The technique that a kind of solid phosphoric acid potassium dihydrogen melting arsenic removal prepares food-grade potassium metaphosphate |
| CN109941981B (en) * | 2019-03-15 | 2020-10-27 | 江西赣锋锂业股份有限公司 | Method for preparing high-purity lithium metaphosphate |
| CN115385318B (en) * | 2022-09-29 | 2023-05-09 | 云南莱德福科技有限公司 | Preparation method of water-soluble potassium polymetaphosphate |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1090255A (en) * | 1993-01-13 | 1994-08-03 | 北京市营养源研究所 | The preparation method of Trisodium trimetaphosphate |
| CN101443511A (en) * | 2006-05-17 | 2009-05-27 | 花王株式会社 | Slipperiness improving agent granulate for washing |
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2012
- 2012-11-14 CN CN 201210456814 patent/CN102910610A/en active Pending
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1090255A (en) * | 1993-01-13 | 1994-08-03 | 北京市营养源研究所 | The preparation method of Trisodium trimetaphosphate |
| CN101443511A (en) * | 2006-05-17 | 2009-05-27 | 花王株式会社 | Slipperiness improving agent granulate for washing |
Non-Patent Citations (2)
| Title |
|---|
| 吴建军: "偏磷酸钾肥料生产工艺", 《农村新技术》 * |
| 郭举等: "由磷酸二氢钠制高纯度三偏磷酸钠的试验研究", 《硫磷设计与粉体工程》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105692577A (en) * | 2015-11-09 | 2016-06-22 | 徐州恒世食品有限公司 | Continuous dynamic polymerization large-scale production method for high-viscosity non-caking potassium polymetaphosphate |
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| CN102910610A (en) | 2013-02-06 |
| CN103663402B (en) | 2015-08-26 |
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