CN104291292B - A kind of method preparing ammonium dihydrogen phosphate by-product blue berry composite fertilizer special - Google Patents
A kind of method preparing ammonium dihydrogen phosphate by-product blue berry composite fertilizer special Download PDFInfo
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- CN104291292B CN104291292B CN201410481995.8A CN201410481995A CN104291292B CN 104291292 B CN104291292 B CN 104291292B CN 201410481995 A CN201410481995 A CN 201410481995A CN 104291292 B CN104291292 B CN 104291292B
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- blue berry
- composite fertilizer
- dihydrogen phosphate
- ammonium dihydrogen
- fertilizer special
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- 235000003095 Vaccinium corymbosum Nutrition 0.000 title claims abstract description 85
- 235000017537 Vaccinium myrtillus Nutrition 0.000 title claims abstract description 85
- 235000021014 blueberries Nutrition 0.000 title claims abstract description 85
- 240000000851 Vaccinium corymbosum Species 0.000 title claims abstract description 81
- 239000003337 fertilizer Substances 0.000 title claims abstract description 71
- 239000002131 composite material Substances 0.000 title claims abstract description 45
- LFVGISIMTYGQHF-UHFFFAOYSA-N Ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 title claims abstract description 38
- 235000019837 monoammonium phosphate Nutrition 0.000 title claims abstract description 38
- 239000006227 byproduct Substances 0.000 title claims abstract description 14
- XSQUKJJJFZCRTK-UHFFFAOYSA-N urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 39
- 150000001875 compounds Chemical class 0.000 claims abstract description 33
- 238000006243 chemical reaction Methods 0.000 claims abstract description 30
- 239000004202 carbamide Substances 0.000 claims abstract description 29
- 229960000539 carbamide Drugs 0.000 claims abstract description 29
- 235000013877 carbamide Nutrition 0.000 claims abstract description 29
- 239000010413 mother solution Substances 0.000 claims abstract description 26
- 239000000706 filtrate Substances 0.000 claims abstract description 17
- DMSZORWOGDLWGN-UHFFFAOYSA-N CTK1A3526 Chemical compound NP(N)(N)=O DMSZORWOGDLWGN-UHFFFAOYSA-N 0.000 claims abstract description 11
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 53
- NBIIXXVUZAFLBC-UHFFFAOYSA-N phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 51
- DLYUQMMRRRQYAE-UHFFFAOYSA-N Phosphorus pentoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 claims description 32
- 229910052700 potassium Inorganic materials 0.000 claims description 30
- 229910052757 nitrogen Inorganic materials 0.000 claims description 27
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 27
- 239000011591 potassium Substances 0.000 claims description 27
- FYYHWMGAXLPEAU-UHFFFAOYSA-N magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 26
- 239000011777 magnesium Substances 0.000 claims description 26
- 229910052749 magnesium Inorganic materials 0.000 claims description 26
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 25
- DZHMRSPXDUUJER-UHFFFAOYSA-N [amino(hydroxy)methylidene]azanium;dihydrogen phosphate Chemical compound NC(N)=O.OP(O)(O)=O DZHMRSPXDUUJER-UHFFFAOYSA-N 0.000 claims description 24
- 239000011575 calcium Substances 0.000 claims description 18
- OYPRJOBELJOOCE-UHFFFAOYSA-N calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 17
- 229910052791 calcium Inorganic materials 0.000 claims description 17
- 238000003756 stirring Methods 0.000 claims description 15
- 229910052698 phosphorus Inorganic materials 0.000 claims description 14
- 239000000470 constituent Substances 0.000 claims description 11
- OAICVXFJPJFONN-UHFFFAOYSA-N phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 11
- 239000011574 phosphorus Substances 0.000 claims description 11
- 238000001035 drying Methods 0.000 claims description 9
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 8
- 239000000243 solution Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 7
- 240000005148 Vaccinium uliginosum Species 0.000 claims description 4
- 125000004432 carbon atoms Chemical group C* 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 125000004430 oxygen atoms Chemical group O* 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- -1 ammonium radical ion Chemical class 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000002835 absorbance Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-M dihydrogenphosphate Chemical compound OP(O)([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-M 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 241001573881 Corolla Species 0.000 description 1
- SEGLCEQVOFDUPX-UHFFFAOYSA-N Di-(2-ethylhexyl)phosphoric acid Chemical compound CCCCC(CC)COP(O)(=O)OCC(CC)CCCC SEGLCEQVOFDUPX-UHFFFAOYSA-N 0.000 description 1
- 229940037179 Potassium Ion Drugs 0.000 description 1
- 241001646071 Prioneris Species 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000000749 insecticidal Effects 0.000 description 1
- 239000002917 insecticide Substances 0.000 description 1
- 230000000877 morphologic Effects 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- NPYPAHLBTDXSSS-UHFFFAOYSA-N potassium ion Chemical compound [K+] NPYPAHLBTDXSSS-UHFFFAOYSA-N 0.000 description 1
- 229910001414 potassium ion Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000750 progressive Effects 0.000 description 1
Abstract
The invention discloses a kind of method preparing ammonium dihydrogen phosphate by-product blue berry composite fertilizer special, the method comprises the following steps: raw material is prepared, prepares ammonium dihydrogen phosphate, the interpolation of filtrate element, is dried.Reacted the mother solution while preparing highly purified ammonium dihydrogen phosphate, reaction produced to be processed adjusting by phosphoric acid and carbamide and ammonia, be prepared as being suitable to the compound fertilizer of blue berry growth, decrease the waste of resource, there is certain value of environmental protection and economic worth.
Description
Technical field
The present invention relates to technical field of fertilizers, be specifically related to a kind of ammonium dihydrogen phosphate by-product blue berry composite fertilizer special prepared
Method.
Background technology
Blue berry is shrub, and tree body size and morphological differences are notable.The height of tree, from 5m to 0.3m, is grown thickly for many years, and having evergreen also has
Fallen leaves, single leaf alternate, Ye Quanyuan or have sawtooth.Corolla is often in urniform or bell-shaped.Petal base portion is combined, and outer rim 4 or 5 is split, white
Or pink, stamen 8～10, it is shorter than style, by insecticide or anemophily, inflorescence mostly is raceme.Most kinds are ripe
Shi Guoshi is black-and-blue, and some kinds are red；Fruit has spherical, oval, oblate or pyriform, and average fruit weight is about 0.5
～between 2.5g.Sarcocarp is soft, many juices.Seed is tiny, can not affect mouthfeel time edible under eating with sarcocarp, and root system is many and fine
Carefully, sturdy few, is distributed shallow, does not has root hair.The blue berry of high-quality be unable to do without good fertilizer, the Major Nutrient unit that blue berry absorbs
Element is nitrogen, phosphorus, potassium, boron, magnesium etc., but in common fertilizer, the utilization rate of N P and K is the lowest, and in general compound fertilizer, nitrogen use efficiency is
20%-40%, phosphorus only has about 20%, and potassium is up to more than 30%.It follows that this season utilization rate of phosphorus is minimum, nitrogen, the profit of potassium
Suitable by rate.It is high to there is loss of elements in common fertilizer, and Soil Environmental Pollution is big, high in cost of production problem, so for crop not
With, the specificity of compound fertilizer has great importance.
The technology of preparing mixing compound fertilizer is also had currently for crops, but not at Patents file and open literary composition
Offer the discovery difference for variety of crops by the research of element needed for crop, the compound state carrying out element arranging in pairs or groups
The technical scheme of compound fertilizer exists, and does not the most find in the technology preparing ammonium dihydrogen phosphate byproduct in process blue berry composite fertilizer special
Scheme occurs.
Therefore, by substantial amounts of research and practice, element collocation needed for blue berry is main to the present inventor, is improving phosphoric acid system
For crop, the absorbance of required element is adjusted whole production technology and parameter while the purity of standby ammonium dihydrogen phosphate product
By-product goes out to be applicable to the special efficient compound fertilizer of blue berry.
Summary of the invention
For solving above-mentioned technical problem, loss of elements is few, environmental pollution is low, element collocation is closed to the invention provides one
Reason, the blue berry that by-product can make blue berry sufficiently absorb element while improving ammonium dihydrogen phosphate product purity are special multiple
The preparation method in Hefei.
The present invention is achieved by the following technical programs:
A kind of method preparing ammonium dihydrogen phosphate by-product blue berry composite fertilizer special, the method comprises the following steps:
Prepared by a, raw material: first by phosphoric acid and carbamide, ratio for 1.8:1.1-1.4 mixes in molar ratio, and phosphoric acid concentration is
68-72%, is that 4 DEG C/min rises to 84-104 DEG C by programming rate, stirring reaction 30min, prepares slip, isolated phosphoric acid
Urea；
B, prepare ammonium dihydrogen phosphate: be slowly added to ammonia in the slip containing urea phosphate controlling pH value is 3.3～3.6 also
Be sufficiently stirred for obtaining containing nitrogen, the slip of phosphorus, the cooled crystallizer of slip is cooled to 25 DEG C, filter, isolated di(2-ethylhexyl)phosphate
Hydrogen ammonium；
C, filtrate element add: add the trace compound needed for potassium element and blue berry in the filtrate of isolated
Obtain the mother solution of blue berry composite fertilizer special；
D, it is dried: being placed in drying machine by mother solution, temperature controls at 32 DEG C, is dried after 30min, and controlling water content is 4%
Obtain blueberry special fertilizer.
In described step a, phosphoric acid is massaged with the react reaction for phosphoric acid solution with urea solid, phosphoric acid and the carbamide of carbamide
You mix than the ratio for 1.8:1.3, and the concentration of phosphoric acid is 71%.
In described step c, trace compound is the chelate of calcium, magnesium, nitrogen element in the mother solution of blue berry composite fertilizer special
Content be 15.5%, phosphorus pentoxide be 7.5%, potassium element be 8.5%, calcium constituent be 4.2%, magnesium elements be 4.4%.
In described step d the nitrogen element content of blue berry composite fertilizer special be 15.2%, calcium element content be 4%, magnesium elements
Content be 4.1%, the content of phosphorus pentoxide be 7.2%, the content of potassium element be 8.2%.
In described step d, blue berry composite fertilizer special is compound state Chemical Mixed Fertilizer.
Containing following N P and K compound state structural formula in its composition of blue berry composite fertilizer special in described step d:
Wherein, the dotted line between carbon atom and oxygen atom represent C atom and O atom it
Between there is coordinate bond.
The beneficial effects of the present invention is: while preparing highly purified ammonium dihydrogen phosphate by phosphoric acid and urea reaction
The techniques such as remaining slip can also be added by element, dry are prepared as the composite fertilizer special needed for blue berry, and mother solution obtains
Sufficiently utilize, reduce cost, the research and analysis to the absorbance of element for the constituent content needed for blue berry and blue berry,
The compound state compound fertilizer the prepared requirement meeting blue berry to the full extent, decrease the waste of element, it is to avoid multiple
The soil contamination problem that the residual in Hefei causes.
Detailed description of the invention
Below in conjunction with embodiment, technical scheme is further described, but claimed scope is not limited to
In described.
Reaction principle illustrates:
First passing through the adjustment to phosphoric acid Yu urea reaction parameter, prepare urea phosphate, urea phosphate can continue to and phosphoric acid
React formation H2NCONH3 +And H2PO4 -, H2NCONH3 +In the environment of containing phosphoric acid, the shape when temperature is 85～120 DEG C
BecomeIntermediate-ion and dihydrogen phosphate, after adding the ammonium radical ion of excess, dihydrogen phosphate
Reacting generation ammonium dihydrogen phosphate with ammonium radical ion to separate out, the ammonium radical ion reaction after adding potassium ion and in intermediate-ion is formedIt is subsequently adding the chelate of calcium constituent and magnesium elements, forms compound state compound fertilizer, through overdrying
Blue berry composite fertilizer special is i.e. obtained after dry process.The reaction equation of above-mentioned reaction principle is as follows:
Chemical equation one:
H2PO3+CO(NH2)2—CO(NH2)2·H3PO4
Chemical equation two:
CO(NH2)2·H3PO4—H2NCONH3 ++H2PO4 -
Chemical equation three:
H2PO4 -+NH4 +—NH4H2PO4
Chemical equation four:
Chemical equation five:
Below in conjunction with specific embodiment, the present invention is further elaborated.
Embodiment one
Prepared by a, raw material: first by phosphoric acid and carbamide, ratio for 1.8:1.1 mixes in molar ratio, and phosphoric acid concentration is 68%,
It is that 4 DEG C/min rises to 84 DEG C by programming rate, stirring reaction 30min, prepare slip, isolated urea phosphate, phosphoric acid and carbamide
Reaction be phosphoric acid solution and urea solid reaction；
B, prepare ammonium dihydrogen phosphate: be slowly added to ammonia in the slip containing urea phosphate controlling pH value is 3.3 and fully
Stirring obtain containing nitrogen, the slip of phosphorus, the cooled crystallizer of slip is cooled to 25 DEG C, filter, isolated ammonium dihydrogen phosphate；
C, filtrate element add: add the trace compound needed for potassium element and blue berry in the filtrate of isolated
Obtaining the mother solution of blue berry composite fertilizer special, trace compound is the chelate of calcium, magnesium, in the mother solution of blue berry composite fertilizer special
The content of nitrogen element is 15.5%, phosphorus pentoxide is 7.5%, potassium element is 8.5%, calcium constituent is 4.2%, magnesium elements is
4.4%；
D, it is dried: being placed in drying machine by mother solution, temperature controls at 32 DEG C, is dried after 30min, and controlling water content is 4%
Obtaining blueberry special fertilizer, the nitrogen element content of blue berry composite fertilizer special is 15.2%, calcium element content is 4%, the containing of magnesium elements
Amount is 4.1%, the content of phosphorus pentoxide is 7.2%, the content of potassium element is 8.2%.
Embodiment two
Prepared by a, raw material: first by phosphoric acid and carbamide, ratio for 1.8:1.1 mixes in molar ratio, and phosphoric acid concentration is 69%,
It is that 4 DEG C/min rises to 88 DEG C by programming rate, stirring reaction 30min, prepare slip, isolated urea phosphate, phosphoric acid and carbamide
Reaction be phosphoric acid solution and urea solid reaction；
B, prepare ammonium dihydrogen phosphate: be slowly added to ammonia in the slip containing urea phosphate controlling pH value is 3.4 and fully
Stirring obtain containing nitrogen, the slip of phosphorus, the cooled crystallizer of slip is cooled to 25 DEG C, filter, isolated ammonium dihydrogen phosphate；
C, filtrate element add: add the trace compound needed for potassium element and blue berry in the filtrate of isolated
Obtaining the mother solution of blue berry composite fertilizer special, trace compound is the chelate of calcium, magnesium, in the mother solution of blue berry composite fertilizer special
The content of nitrogen element is 15.5%, phosphorus pentoxide is 7.5%, potassium element is 8.5%, calcium constituent is 4.2%, magnesium elements is
4.4%；
D, it is dried: being placed in drying machine by mother solution, temperature controls at 32 DEG C, is dried after 30min, and controlling water content is 4%
Obtaining blueberry special fertilizer, the nitrogen element content of blue berry composite fertilizer special is 15.2%, calcium element content is 4%, the containing of magnesium elements
Amount is 4.1%, the content of phosphorus pentoxide is 7.2%, the content of potassium element is 8.2%.
Embodiment three
Prepared by a, raw material: first by phosphoric acid and carbamide, ratio for 1.8:1.2 mixes in molar ratio, and phosphoric acid concentration is 70%,
It is that 4 DEG C/min rises to 84 DEG C by programming rate, stirring reaction 30min, prepare slip, isolated urea phosphate, phosphoric acid and carbamide
Reaction be phosphoric acid solution and urea solid reaction；
B, prepare ammonium dihydrogen phosphate: be slowly added to ammonia in the slip containing urea phosphate controlling pH value is 3.4 and fully
Stirring obtain containing nitrogen, the slip of phosphorus, the cooled crystallizer of slip is cooled to 25 DEG C, filter, isolated ammonium dihydrogen phosphate；
C, filtrate element add: add the trace compound needed for potassium element and blue berry in the filtrate of isolated
Obtaining the mother solution of blue berry composite fertilizer special, trace compound is the chelate of calcium, magnesium, in the mother solution of blue berry composite fertilizer special
The content of nitrogen element is 15.5%, phosphorus pentoxide is 7.5%, potassium element is 8.5%, calcium constituent is 4.2%, magnesium elements is
4.4%；
D, it is dried: being placed in drying machine by mother solution, temperature controls at 32 DEG C, is dried after 30min, and controlling water content is 4%
Obtaining blueberry special fertilizer, the nitrogen element content of blue berry composite fertilizer special is 15.2%, calcium element content is 4%, the containing of magnesium elements
Amount is 4.1%, the content of phosphorus pentoxide is 7.2%, the content of potassium element is 8.2%.
Embodiment four
Prepared by a, raw material: first by phosphoric acid and carbamide, ratio for 1.8:1.3 mixes in molar ratio, and phosphoric acid concentration is 71%,
It is that 4 DEG C/min rises to 88 DEG C by programming rate, stirring reaction 30min, prepare slip, isolated urea phosphate, phosphoric acid and carbamide
Reaction be phosphoric acid solution and urea solid reaction；
B, prepare ammonium dihydrogen phosphate: be slowly added to ammonia in the slip containing urea phosphate controlling pH value is 3.5 and fully
Stirring obtain containing nitrogen, the slip of phosphorus, the cooled crystallizer of slip is cooled to 25 DEG C, filter, isolated ammonium dihydrogen phosphate；
C, filtrate element add: add the trace compound needed for potassium element and blue berry in the filtrate of isolated
Obtaining the mother solution of blue berry composite fertilizer special, trace compound is the chelate of calcium, magnesium, in the mother solution of blue berry composite fertilizer special
The content of nitrogen element is 15.5%, phosphorus pentoxide is 7.5%, potassium element is 8.5%, calcium constituent is 4.2%, magnesium elements is
4.4%；
D, it is dried: being placed in drying machine by mother solution, temperature controls at 32 DEG C, is dried after 30min, and controlling water content is 4%
Obtaining blueberry special fertilizer, the nitrogen element content of blue berry composite fertilizer special is 15.2%, calcium element content is 4%, the containing of magnesium elements
Amount is 4.1%, the content of phosphorus pentoxide is 7.2%, the content of potassium element is 8.2%.
Embodiment five
Prepared by a, raw material: first by phosphoric acid and carbamide, ratio for 1.8:1.4 mixes in molar ratio, and phosphoric acid concentration is 71%,
It is that 4 DEG C/min rises to 100 DEG C by programming rate, stirring reaction 30min, prepare slip, isolated urea phosphate, phosphoric acid and carbamide
Reaction be phosphoric acid solution and urea solid reaction；
B, prepare ammonium dihydrogen phosphate: be slowly added to ammonia in the slip containing urea phosphate controlling pH value is 3.6 and fully
Stirring obtain containing nitrogen, the slip of phosphorus, the cooled crystallizer of slip is cooled to 25 DEG C, filter, isolated ammonium dihydrogen phosphate；
C, filtrate element add: add the trace compound needed for potassium element and blue berry in the filtrate of isolated
Obtaining the mother solution of blue berry composite fertilizer special, trace compound is the chelate of calcium, magnesium, in the mother solution of blue berry composite fertilizer special
The content of nitrogen element is 15.5%, phosphorus pentoxide is 7.5%, potassium element is 8.5%, calcium constituent is 4.2%, magnesium elements is
4.4%；
D, it is dried: being placed in drying machine by mother solution, temperature controls at 32 DEG C, is dried after 30min, and controlling water content is 4%
Obtaining blueberry special fertilizer, the nitrogen element content of blue berry composite fertilizer special is 15.2%, calcium element content is 4%, the containing of magnesium elements
Amount is 4.1%, the content of phosphorus pentoxide is 7.2%, the content of potassium element is 8.2%.
Embodiment six
Prepared by a, raw material: first by phosphoric acid and carbamide, ratio for 1.8:1.4 mixes in molar ratio, and phosphoric acid concentration is 72%,
It is that 4 DEG C/min rises to 104 DEG C by programming rate, stirring reaction 30min, prepare slip, isolated urea phosphate, phosphoric acid and carbamide
Reaction be phosphoric acid solution and urea solid reaction；
B, prepare ammonium dihydrogen phosphate: be slowly added to ammonia in the slip containing urea phosphate controlling pH value is 3.6 and fully
Stirring obtain containing nitrogen, the slip of phosphorus, the cooled crystallizer of slip is cooled to 25 DEG C, filter, isolated ammonium dihydrogen phosphate；
C, filtrate element add: add the trace compound needed for potassium element and blue berry in the filtrate of isolated
Obtaining the mother solution of blue berry composite fertilizer special, trace compound is the chelate of calcium, magnesium, in the mother solution of blue berry composite fertilizer special
The content of nitrogen element is 15.5%, phosphorus pentoxide is 7.5%, potassium element is 8.5%, calcium constituent is 4.2%, magnesium elements is
4.4%；
D, it is dried: being placed in drying machine by mother solution, temperature controls at 32 DEG C, is dried after 30min, and controlling water content is 4%
Obtaining blueberry special fertilizer, the nitrogen element content of blue berry composite fertilizer special is 15.2%, calcium element content is 4%, the containing of magnesium elements
Amount is 4.1%, the content of phosphorus pentoxide is 7.2%, the content of potassium element is 8.2%.
Below in conjunction with specific experiment example, product and the technique effect of the present invention are further described.
Experimental example one
The embodiment of the present invention one, embodiment two, embodiment three, embodiment four, embodiment five, embodiment six, in prepare
Ammonium dihydrogen phosphate product detect by the standard of GB25569 2010, testing result is as shown in table 1:
Table 1 ammonium dihydrogen phosphate of the present invention product purity detects
| Ammonium dihydrogen phosphate | Criterion of acceptability | Embodiment one | Embodiment two | Embodiment three | Embodiment four | Embodiment five | Embodiment six |
| Purity >=% | 96 | 98.5 | 98.3 | 98.3 | 98.2 | 98.3 | 98.2 |
| Moisture≤% | 0.5 | 0.42 | 0.4 | 0.41 | 0.41 | 0.42 | 0.42 |
As can be seen from Table 1, the ammonium dihydrogen phosphate that technical scheme is produced has not only reached qualified mark
Standard, and the purity of product is the highest, illustrates that this method is prepared ammonium dihydrogen phosphate product and had the most progressive.
Experimental example two
According to the blue berry absorption to constituent content and the growing state of blue berry, to blue berry composite fertilizer special and Common compound fertilizer
Compare test.With 9 blue berry Seedlings as subjects, be numbered respectively A, B, C, D, E, F, G, H, I, to tri-labels of A, B, C
Blue berry Seedling use common fertilizer, the blue berry Seedling of six labels such as D, E, F, G, H, I is used embodiment one, embodiment respectively
Two, blueberry special fertilizer prepared in embodiment three, embodiment four, embodiment five, embodiment six, contrast and experiment such as table
Shown in 2:
Table 2 use Common compound fertilizer and blue berry composite fertilizer special to blue berry element absorption rate to when to blue berry growth
Impact
The blue berry composite fertilizer special that as can be seen from the above table prepared by the present invention sufficiently can be absorbed by blue berry, and also rich
Containing the nutrient needed for the blue berries such as Ca, Me, the normal growth of blue berry is provided guarantee, improve the growing way of blue berry, increase
The yield of blue berry, thus improve economic benefit.
Claims (6)
1. the method preparing ammonium dihydrogen phosphate by-product blue berry composite fertilizer special, it is characterised in that the method includes following step
Rapid:
Prepared by a, raw material: first by phosphoric acid and carbamide, ratio for 1.8:1.1-1.4 mixes in molar ratio, and phosphoric acid concentration is 68-
72%, it is that 4 DEG C/min rises to 84-104 DEG C by programming rate, stirring reaction 30min, prepare slip, isolated urea phosphate；
B, prepare ammonium dihydrogen phosphate: be slowly added to ammonia in the slip containing urea phosphate controlling pH value is 3.3-3.6 fully
Stirring obtain containing nitrogen, the slip of phosphorus, the cooled crystallizer of slip is cooled to 25 DEG C, filter, isolated ammonium dihydrogen phosphate；
C, filtrate element add: the trace compound needed for adding potassium element and blue berry in the filtrate of isolated obtains
The mother solution of blue berry composite fertilizer special；
D, being dried: being placed in drying machine by mother solution, temperature controls at 32 DEG C, is dried after 30min, controlling water content is 4% to obtain
Blueberry special fertilizer.
The method preparing ammonium dihydrogen phosphate by-product blue berry composite fertilizer special the most according to claim 1, it is characterised in that: institute
Stating the reaction that in step a, the reaction of phosphoric acid and carbamide is phosphoric acid solution with urea solid, phosphoric acid and carbamide are 1.8 in molar ratio:
The ratio mixing of 1.3, the concentration of phosphoric acid is 71%.
The method preparing ammonium dihydrogen phosphate by-product blue berry composite fertilizer special the most according to claim 1, it is characterised in that: institute
Stating trace compound in step c is the chelate of calcium, magnesium, and in the mother solution of blue berry composite fertilizer special, the content of nitrogen element is
15.5%, phosphorus pentoxide be 7.5%, potassium element be 8.5%, calcium constituent be 4.2%, magnesium elements be 4.4%.
The method preparing ammonium dihydrogen phosphate by-product blue berry composite fertilizer special the most according to claim 1, it is characterised in that: institute
State the nitrogen element content of blue berry composite fertilizer special in step d be 15.2%, calcium element content be 4%, the content of magnesium elements be
4.1%, the content of phosphorus pentoxide be 7.2%, the content of potassium element be 8.2%.
The method preparing ammonium dihydrogen phosphate by-product blue berry composite fertilizer special the most according to claim 1, it is characterised in that: institute
Stating blue berry composite fertilizer special in step d is compound state Chemical Mixed Fertilizer.
The method preparing ammonium dihydrogen phosphate by-product blue berry composite fertilizer special the most according to claim 1, it is characterised in that: institute
State and step d contain in its composition of blue berry composite fertilizer special following N P and K compound state structural formula:
Wherein, the dotted line between carbon atom and oxygen atom represents and deposits between C atom and O atom
In coordinate bond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410481995.8A CN104291292B (en) | 2014-09-19 | A kind of method preparing ammonium dihydrogen phosphate by-product blue berry composite fertilizer special |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410481995.8A CN104291292B (en) | 2014-09-19 | A kind of method preparing ammonium dihydrogen phosphate by-product blue berry composite fertilizer special |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104291292A CN104291292A (en) | 2015-01-21 |
| CN104291292B true CN104291292B (en) | 2017-01-04 |
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