CN1070901A - A kind of production technique of potassium-ammonium phosphate - Google Patents
A kind of production technique of potassium-ammonium phosphate Download PDFInfo
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- CN1070901A CN1070901A CN 92111905 CN92111905A CN1070901A CN 1070901 A CN1070901 A CN 1070901A CN 92111905 CN92111905 CN 92111905 CN 92111905 A CN92111905 A CN 92111905A CN 1070901 A CN1070901 A CN 1070901A
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- potassium
- ammonium phosphate
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- phosphate
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
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Abstract
The present invention relates to a kind of is the method for raw material production potassium-ammonium phosphate with monoammonium phosphate and Repone K, transforms Repone K by monoammonium phosphate, and reaction under certain condition concentrates, crystallisation by cooling, centrifuge dehydration at normal temperatures separates and make high density and do not have the chlorine potassium-ammonium phosphate again.Its clout still can make full use of make Different Nutrients the chlorine potassium-ammonium phosphate arranged.Its technology is simple, and is low for equipment requirements, and the transformation efficiency height.
Description
The present invention relates to one the preparation method of fertilizer, particularly be a kind of be the method for raw material production nitrogen phosphorus, K composite fertilizer with monoammonium phosphate and Repone K.
" phosphorus handle and multiple fertilizer " 90 years the 4th phases of magazine are topic with " conversion method is produced the research of ammonium-potassium phosphate ", disclosed a kind of low temperature cooling crystallization process of producing nitrogen, phosphorus, potassium three element compound fertilizer material ammonium-potassium phosphate ((K, NH4) H2PO4) with primary ammonium phosphate (NH4H2PO4) and Repone K (KCl), its main technique flow process comprises: NH4H2PO4 and KCl are carried out conversion reaction under certain condition, after crystallization is filtered, add NH4H2PO4 once more and filter, isolate solid phase prod (K, NH4) H2PO4 again through secondary crystal.The optimum process condition that is proposed is the KCl/NH4H2PO4 mol ratio: 1.2～3.5, and 0.5～1 hour solution hold-time under 50 ℃ of invert points of dissolving, 0 ℃ of Tc, 1.5 ℃/minute of speed of cooling, the Tc.The weak point of this low temperature cooling crystallization process is: because the solubilizing reaction temperature is on the low side, cause its transformation efficiency not high, be up to 50%; Twice adding NH4H2PO4, twice crystallization make the complex process of product; 0 ℃ crystallization temperature condition need be provided with special chilling unit and could realize.
The production technique that the purpose of this invention is to provide the potassium-ammonium phosphate that a kind of technical process is simple, transformation efficiency is high.
The objective of the invention is to be achieved through the following technical solutions: monoammonium phosphate and Repone K are added dissolving vessel after by molecular ratio 0.8～2.0 simple mixing, under 50～90 ℃ of temperature condition, carry out solubilizing reaction, feed liquid after having reacted insert sink in the heavy clear equipment sorting from, to heavy sorting from after slag liquid carry out centrifugation, to sink the feed liquid of clear gained and the filtrate of centrifugation gained again and deliver in the retort, in temperature is to react concentrated under 80～120 ℃ of conditions, be disposed to after having reacted and be cooled to 25～35 ℃ in the cooling crystallization pond,, the centrifuge dehydration separation do not have chlorine potassium-ammonium phosphate (first grade, total effectively nutrient 〉=65%) after making high density.Surplus liquid after the centrifugation is collected and according to aforementioned manner it is carried out concentration response, crystallisation by cooling, centrifugation, still can make its total nutrient greater than 50% potassium-ammonium phosphate seconds, its slag liquid also can make nitrogen, phosphorus, the potassium compound fertilizer that contains nutrient 〉=25%.Filtrate after its centrifugation supplies the concentrated usefulness of reaction after all can importing and sinking clearly in the heavy clear equipment.
Technical process of the present invention is simple, once transform the no chlorine potassium-ammonium phosphate that crystallization can make high density, and the transformation efficiency height can reach 60%, 25～35 ℃ normal temperature Tc, need not to set special chilling unit, thereby can reduce equipment configuration, reduce cost, also make the lower NH4Cl of solubleness, KCl double salt be difficult for separating out simultaneously, be convenient to make the qualified product of cl content, the promptly corresponding productive rate that has improved no chlorine potassium-ammonium phosphate.
Below in conjunction with embodiment and accompanying drawing the present invention is described in further details.
Fig. 1 is a process flow diagram of the present invention
As shown in Figure 1, at first monoammonium phosphate and Repone K are in the lump added solubilizing reaction still by simple mixing of dosing vessel and an amount of water in the ratio of molecular ratio 0.8～2.0 after the metering of sieving, in temperature is to carry out solubilizing reaction under 50～90 ℃ of conditions, having reacted back breakdown solubilizing reaction still bottom valve puts feed liquid in the heavy clear device of stoste into, its slag liquid is carried out centrifugation, gained filtrate together with the feed liquid of heavy clear gained with being pumped to the concentration response still, in temperature is to react concentrated under 80～120 ℃ of conditions, be disposed to after having reacted and carry out crystallisation by cooling under normal temperature (25～35 ℃) condition in the cooling crystallizer, 1～1.5 ℃/minute of speed of cooling, and it was kept under 25～35 ℃ Tc 0.5～2.0 hour, after promptly making high density, the centrifuge dehydration separation do not have chlorine potassium-ammonium phosphate (first grade).Its clout still can be collected according to preceding described react concentrated, crystallisation by cooling and centrifugation, make total nutrient greater than 50% chlorine potassium-ammonium phosphate (seconds) arranged.And the filter cake of gained carries out drying through pneumatic drier and can make the nitrogen that contains nutrient 25～30%, phosphorus, potassium compound fertilizer (paying product) after centrifugation.That table 1 provides is 72 hours continuous production gained of total system check analysis result.
Table 1
| N％ | P 2O 5% | K 2O% | Cl% | |
| First grade | 5.44 | 42.86 | 23.8 | 1.67 |
| Seconds | 11.69 | 18.84 | 22.58 | 29.95 |
| Compound fertilizer | 4.32 | 19.46 | 6.21 | 3.66 |
Claims (3)
1, a kind of is the production technique of raw material production potassium-ammonium phosphate with monoammonium phosphate and Repone K, and its technical process comprises that dissolving transforms, reaction concentrates, crystallisation by cooling, centrifugation, it is characterized in that:
A. monoammonium phosphate and Repone K once drop into by molecular ratio 0.8～2.0,
B. dissolve conversion reaction and under 50～90 ℃ of temperature condition, carry out,
The slag liquid that c. will dissolve after the feed liquid that obtains after transforming is sunk clearly, sinks clearly carries out centrifugation,
D. will sink the clear liquid of clear gained, the filtrate of centrifugation gained and send in the lump in the reactor, under 80～120 ℃ of temperature condition, react concentrated,
E. the crystallisation by cooling temperature is 25～35 ℃.
2, the production technique of production potassium-ammonium phosphate as claimed in claim 1, it is characterized in that also can with described when centrifugation obtains product isolated surplus liquid, through same reaction concentrate, crystallisation by cooling, centrifugation makes high density that the chlorine potassium-ammonium phosphate is arranged.
3, produce the production technique of potassium-ammonium phosphate according to claim 1, it is characterized in that also and can make N.P.K compound fertilizer sinking the separating obtained filtration cakes torrefaction of clear liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92111905 CN1070901A (en) | 1992-09-26 | 1992-09-26 | A kind of production technique of potassium-ammonium phosphate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92111905 CN1070901A (en) | 1992-09-26 | 1992-09-26 | A kind of production technique of potassium-ammonium phosphate |
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| Publication Number | Publication Date |
|---|---|
| CN1070901A true CN1070901A (en) | 1993-04-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92111905 Pending CN1070901A (en) | 1992-09-26 | 1992-09-26 | A kind of production technique of potassium-ammonium phosphate |
Country Status (1)
| Country | Link |
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| CN (1) | CN1070901A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1045576C (en) * | 1994-06-18 | 1999-10-13 | 四川联合大学 | Preparing method for industrial ammonium phosphate and series compound fertilizer |
| CN1054593C (en) * | 1995-02-22 | 2000-07-19 | 四川联合大学 | Combinating process for producing ammonium-potassium sulfate and nitrogen-phosphorus-potassium composite fertilizer |
| CN101717280B (en) * | 2009-10-09 | 2012-04-18 | 河北理工大学 | Method for preparing potassium-ammonium sulfate from sulfuric acid and ammonia water reclaimed in coking |
| CN104386664A (en) * | 2014-10-30 | 2015-03-04 | 成都化工股份有限公司 | Method for producing ammonium potassium dihydrogen phosphate from fertilizer grade ammonium dihydrogen phosphate |
| CN106278388A (en) * | 2016-08-12 | 2017-01-04 | 吉林万通集团有限公司 | Potassium-ammonium phosphate |
| CN107382430A (en) * | 2017-09-12 | 2017-11-24 | 界首市长征家庭农场 | A kind of instant potassium-ammonium phosphate |
| CN115490541A (en) * | 2022-11-22 | 2022-12-20 | 云南缁磷工业技术有限公司 | Method for continuously producing ammonium potassium phosphate |
-
1992
- 1992-09-26 CN CN 92111905 patent/CN1070901A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1045576C (en) * | 1994-06-18 | 1999-10-13 | 四川联合大学 | Preparing method for industrial ammonium phosphate and series compound fertilizer |
| CN1054593C (en) * | 1995-02-22 | 2000-07-19 | 四川联合大学 | Combinating process for producing ammonium-potassium sulfate and nitrogen-phosphorus-potassium composite fertilizer |
| CN101717280B (en) * | 2009-10-09 | 2012-04-18 | 河北理工大学 | Method for preparing potassium-ammonium sulfate from sulfuric acid and ammonia water reclaimed in coking |
| CN104386664A (en) * | 2014-10-30 | 2015-03-04 | 成都化工股份有限公司 | Method for producing ammonium potassium dihydrogen phosphate from fertilizer grade ammonium dihydrogen phosphate |
| CN104386664B (en) * | 2014-10-30 | 2016-02-17 | 成都化工股份有限公司 | The method of ammonium potassium dihydrogen phosphate produced by fertilizer grade primary ammonium phosphate |
| CN106278388A (en) * | 2016-08-12 | 2017-01-04 | 吉林万通集团有限公司 | Potassium-ammonium phosphate |
| CN107382430A (en) * | 2017-09-12 | 2017-11-24 | 界首市长征家庭农场 | A kind of instant potassium-ammonium phosphate |
| CN115490541A (en) * | 2022-11-22 | 2022-12-20 | 云南缁磷工业技术有限公司 | Method for continuously producing ammonium potassium phosphate |
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