CN115894125A - Fertilizer and preparation method thereof - Google Patents
Fertilizer and preparation method thereof Download PDFInfo
- Publication number
- CN115894125A CN115894125A CN202310012530.7A CN202310012530A CN115894125A CN 115894125 A CN115894125 A CN 115894125A CN 202310012530 A CN202310012530 A CN 202310012530A CN 115894125 A CN115894125 A CN 115894125A
- Authority
- CN
- China
- Prior art keywords
- fertilizer
- urea
- inclusion compound
- urea inclusion
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003337 fertilizer Substances 0.000 title claims abstract description 67
- 238000002360 preparation method Methods 0.000 title abstract description 10
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 98
- 239000004202 carbamide Substances 0.000 claims abstract description 98
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 49
- 150000001875 compounds Chemical class 0.000 claims abstract description 42
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 25
- 235000015112 vegetable and seed oil Nutrition 0.000 claims abstract description 21
- 239000008158 vegetable oil Substances 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 16
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 claims abstract description 14
- YWEUIGNSBFLMFL-UHFFFAOYSA-N diphosphonate Chemical compound O=P(=O)OP(=O)=O YWEUIGNSBFLMFL-UHFFFAOYSA-N 0.000 claims abstract description 10
- DLYUQMMRRRQYAE-UHFFFAOYSA-N phosphorus pentoxide Inorganic materials O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910001950 potassium oxide Inorganic materials 0.000 claims abstract description 10
- 235000021122 unsaturated fatty acids Nutrition 0.000 claims abstract description 3
- 150000004670 unsaturated fatty acids Chemical class 0.000 claims abstract description 3
- 235000013877 carbamide Nutrition 0.000 claims description 95
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 36
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 22
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 16
- 239000002994 raw material Substances 0.000 claims description 16
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims description 14
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 claims description 14
- 235000019837 monoammonium phosphate Nutrition 0.000 claims description 14
- 239000006012 monoammonium phosphate Substances 0.000 claims description 14
- 239000002245 particle Substances 0.000 claims description 13
- 238000005469 granulation Methods 0.000 claims description 12
- 230000003179 granulation Effects 0.000 claims description 12
- 235000019270 ammonium chloride Nutrition 0.000 claims description 11
- 239000000440 bentonite Substances 0.000 claims description 10
- 229910000278 bentonite Inorganic materials 0.000 claims description 10
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 10
- 239000001103 potassium chloride Substances 0.000 claims description 8
- 235000011164 potassium chloride Nutrition 0.000 claims description 8
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 claims description 8
- 229910052939 potassium sulfate Inorganic materials 0.000 claims description 8
- 235000011151 potassium sulphates Nutrition 0.000 claims description 8
- 239000013078 crystal Substances 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 238000004806 packaging method and process Methods 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 5
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims description 5
- 235000011130 ammonium sulphate Nutrition 0.000 claims description 5
- 238000010410 dusting Methods 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 239000002904 solvent Substances 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 235000005687 corn oil Nutrition 0.000 claims description 4
- 239000002285 corn oil Substances 0.000 claims description 4
- 239000003549 soybean oil Substances 0.000 claims description 4
- 235000012424 soybean oil Nutrition 0.000 claims description 4
- 239000005995 Aluminium silicate Substances 0.000 claims description 2
- 239000005696 Diammonium phosphate Substances 0.000 claims description 2
- 235000019498 Walnut oil Nutrition 0.000 claims description 2
- 235000012211 aluminium silicate Nutrition 0.000 claims description 2
- 229960000892 attapulgite Drugs 0.000 claims description 2
- 230000004888 barrier function Effects 0.000 claims description 2
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 claims description 2
- 229910000388 diammonium phosphate Inorganic materials 0.000 claims description 2
- 235000019838 diammonium phosphate Nutrition 0.000 claims description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052625 palygorskite Inorganic materials 0.000 claims description 2
- 238000012216 screening Methods 0.000 claims description 2
- 239000008170 walnut oil Substances 0.000 claims description 2
- 235000019486 Sunflower oil Nutrition 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 239000002600 sunflower oil Substances 0.000 claims 1
- 230000000052 comparative effect Effects 0.000 description 33
- 238000012360 testing method Methods 0.000 description 19
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 12
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 description 12
- 235000012538 ammonium bicarbonate Nutrition 0.000 description 12
- 239000001099 ammonium carbonate Substances 0.000 description 12
- 239000004519 grease Substances 0.000 description 11
- 229920006395 saturated elastomer Polymers 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000003921 oil Substances 0.000 description 5
- 235000019198 oils Nutrition 0.000 description 5
- 240000008042 Zea mays Species 0.000 description 4
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 4
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 4
- WZLMXYBCAZZIRQ-UHFFFAOYSA-N [N].[P].[K] Chemical compound [N].[P].[K] WZLMXYBCAZZIRQ-UHFFFAOYSA-N 0.000 description 4
- 235000005822 corn Nutrition 0.000 description 4
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 4
- 230000004720 fertilization Effects 0.000 description 4
- 238000007873 sieving Methods 0.000 description 4
- 244000061176 Nicotiana tabacum Species 0.000 description 2
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000013400 design of experiment Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000013401 experimental design Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 231100000957 no side effect Toxicity 0.000 description 1
- 235000021049 nutrient content Nutrition 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 235000020238 sunflower seed Nutrition 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
Landscapes
- Fertilizers (AREA)
Abstract
The invention relates to a fertilizer and a preparation method thereof, wherein the total content of nitrogen, phosphorus pentoxide and potassium oxide in the fertilizer is more than or equal to 45 percent, and the nitrogen content is more than or equal to 15 percent, and the fertilizer is characterized by containing a urea clathrate compound; the urea inclusion compound is a product obtained by purifying unsaturated fatty acid in vegetable oil by a urea inclusion method. The application can solve the problem that high-nitrogen products are easy to agglomerate.
Description
Technical Field
The invention relates to a fertilizer and a preparation method thereof.
Background
The high-concentration fertilizer has the advantages of high nutrient content and convenient use, can realize one-time fertilization without additional fertilization, and is lack of labor force in rural areas at present, so the high-concentration fertilizer is deeply loved by farmers. In order to meet the requirement of the growth period of corn, the purpose of applying fertilizer at one time without additional fertilizer is achieved, the base fertilizer usually uses fertilizer with nitrogen content more than or equal to 20, the fertilizer for providing nitrogen mainly comprises ammonium chloride, ammonium sulfate and urea, wherein the ammonium chloride and the ammonium sulfate have lower solubility and are not easy to cake relative to the urea, but the fertilizer has the problem of low nitrogen content, wherein the nitrogen content of agricultural ammonium chloride is 25 percent, the ammonium sulfate is 20.5 percent, and the high-concentration fertilizer requires total nutrient more than or equal to 45 percent, so the fertilizer cannot produce high-concentration fertilizer with nitrogen content more than or equal to 20 percent, the produced high-concentration fertilizer with nitrogen content more than or equal to 20 percent is bound with the urea, and the use amount of the urea is larger, so the produced fertilizer is easy to cake, great trouble is brought to the use, particularly, most of modern mechanical fertilization has the problem of blocking a fertilization pipeline when in use.
The drum granulation is to introduce steam into a drum granulator, bond and granulate the fertilizer raw materials and the auxiliary materials under the conditions of certain temperature and humidity, wherein the pressure of the steam is 4-6Mpa, and the steam has higher granulation temperature.
The urea inclusion method is widely used for purifying unsaturated oil, however, the urea inclusion compound needs to be treated again to achieve the purpose of recycling urea, so that a large amount of solvent is needed to extract saturated oil, and the problem of environmental pollution exists.
At present, no method which can solve the problem of caking of a high-concentration fertilizer with the nitrogen content of more than or equal to 20 percent and does not influence the production yield of the fertilizer exists; the problem that the urea is repeatedly used to purify the unsaturated grease by the urea inclusion method to pollute the environment is not solved.
Disclosure of Invention
The invention provides a fertilizer and a preparation method thereof, which solve the technical problems that 1) a high-concentration fertilizer with the nitrogen content of more than or equal to 20 percent is agglomerated, and the production yield of the fertilizer is not influenced; 2) The unsaturated grease urea is purified by a urea inclusion method and reused, thereby polluting the environment.
In order to solve the technical problem, the invention adopts the following technical scheme:
a fertilizer contains a urea inclusion compound, wherein the total content of nitrogen, phosphorus pentoxide and potassium oxide in the fertilizer is more than or equal to 45%, the nitrogen content is more than or equal to 20%, and the urea inclusion compound accounts for 5-10% of the total mass of the fertilizer; the urea inclusion compound is a product obtained by purifying unsaturated fatty acid in vegetable oil by a urea inclusion method.
The vegetable oil is one or more of soybean oil, corn oil, walnut oil and sunflower seed oil.
Adding urea and a solvent into vegetable oil, reacting for 10-20 h at the temperature of-20 to-4 ℃ to form crystals, and separating to obtain a collected solid, namely a urea inclusion compound;
the solvent is one or two of methanol or ethanol.
The mass ratio of the urea to the methanol to the vegetable oil is 2-4.
The preparation method of the fertilizer comprises the following steps:
adding fertilizer raw materials containing nitrogen, phosphorus pentoxide and potassium oxide, auxiliary materials and a urea clathrate compound into a granulation roller, granulating, cooling, screening, dusting and packaging to obtain a fertilizer;
the fertilizer raw material containing nitrogen, phosphorus pentoxide and potassium oxide is one or more of urea, ammonium chloride, ammonium sulfate, monoammonium phosphate, diammonium phosphate, potassium chloride and potassium sulfate; the auxiliary material is one or more of bentonite, attapulgite and kaolin.
The mass ratio of fertilizer raw materials containing nitrogen, phosphorus pentoxide and potassium oxide, auxiliary materials and urea inclusion compound is 75-95; the dusting powder is used for forming barriers among particles.
The invention has the following beneficial technical effects:
1. by adding the urea inclusion compound, the problem of caking of the high-concentration fertilizer with the nitrogen content of more than or equal to 20% can be solved, and the fertilizer production is not influenced.
2. The method can solve the problem that the urea inclusion method for purifying the unsaturated grease and the urea can be reused to pollute the environment.
Detailed Description
In order to better understand the technical scheme, the technical scheme of the invention is described in detail by combining the preferred examples.
Example 1
The fertilizer has a nitrogen-phosphorus-potassium ratio of 25-12-10, and the specific formula is as follows: 245 parts of monoammonium phosphate, 160 parts of potassium chloride, 440 parts of urea, 90 parts of ammonium chloride, 10 parts of ammonium bicarbonate, 5 parts of urea inclusion compound and 50 parts of bentonite.
The used raw materials, namely the small-particle urea, comprise 46.4% of N, 9-49% of monoammonium phosphate (N-P2O 5), 61.3% of potassium chloride (K2O), 17% of N in ammonium bicarbonate, 25% of ammonium chloride and 38% of N in urea inclusion compound, wherein the contents are percentages by mass.
The vegetable oil is soybean oil.
Adding urea and methanol into vegetable oil, reacting at-10 deg.C for 12 hr to form crystals, and separating to obtain solid urea clathrate;
the mass ratio of the urea to the methanol to the vegetable oil is 2.
The preparation method of the fertilizer comprises the following steps:
adding monoammonium phosphate, potassium chloride, urea (crushed by a crusher), ammonium chloride, ammonium bicarbonate, a urea inclusion compound and bentonite into a granulation roller, granulating under the action of steam, cooling, sieving, adding talcum powder accounting for two thousandth of the total mass, and packaging to obtain the fertilizer.
Example 2
The fertilizer has a nitrogen-phosphorus-potassium ratio of 25-12-10, and the specific formula is as follows: 245 parts of monoammonium phosphate, 160 parts of potassium chloride, 440 parts of urea, 90 parts of ammonium chloride, 10 parts of ammonium bicarbonate, 8 parts of urea clathrate compound and 47 parts of bentonite.
The used raw materials, namely the small-particle urea, comprise 46.4% of N, 9-49% of monoammonium phosphate (N-P2O 5), 61.3% of potassium chloride (K2O), 17% of N in ammonium bicarbonate, 25% of ammonium chloride and 38% of N in urea inclusion compound, wherein the contents are percentages by mass.
The vegetable oil is soybean oil.
Adding urea and methanol into vegetable oil, reacting at-10 deg.C for 12 hr to form crystals, and separating to obtain solid urea clathrate;
the mass ratio of the urea to the methanol to the vegetable oil is 2.
The preparation method of the fertilizer comprises the following steps:
adding monoammonium phosphate, potassium chloride, urea (crushed by a crusher), ammonium chloride, ammonium bicarbonate, a urea inclusion compound and bentonite into a granulation roller, granulating under the action of steam, cooling, sieving, adding talcum powder accounting for two thousandth of the total mass, and packaging to obtain the fertilizer.
Example 3
A fertilizer has a nitrogen-phosphorus-potassium ratio of 24-8-14, and comprises the following specific formula: 160 parts of monoammonium phosphate, 280 parts of potassium sulfate, 485 parts of urea, 4 parts of ammonium bicarbonate, 6 parts of urea clathrate compound and 65 parts of bentonite.
The used raw materials of the small-particle urea are 46.4% of N, 9-49% of monoammonium phosphate (N-P2O 5), 50.5% of potassium sulfate (K2O), 17% of ammonium bicarbonate N, 41% of urea inclusion compound N, and the contents are percentage contents by mass.
The vegetable oil is corn oil.
Adding urea and methanol into vegetable oil, reacting at-12 deg.C for 15 hr to form crystals, and separating to obtain solid urea clathrate;
the mass ratio of urea to methanol to vegetable oil is 3.
The preparation method of the fertilizer comprises the following steps:
adding monoammonium phosphate, potassium sulfate, urea (crushed by a crusher), ammonium bicarbonate, a urea inclusion compound and bentonite into a granulation roller, granulating under the action of steam, cooling, sieving, adding talc powder accounting for one thousandth of the total mass, and packaging to obtain the fertilizer.
Example 4
A fertilizer has a nitrogen-phosphorus-potassium ratio of 24-8-14, and comprises the following specific formula: 160 parts of monoammonium phosphate, 280 parts of potassium sulfate, 485 parts of urea, 4 parts of ammonium bicarbonate, 10 parts of urea inclusion compound and 61 parts of bentonite.
The N content of the used raw material small particle urea is 46.4, the content of monoammonium phosphate (N-P2O 5) is 9-49, the content of potassium sulfate (K2O) is 50.5, the N content of ammonium bicarbonate is 17, the N content of the urea inclusion compound is 41, and the contents are percentage contents by mass.
The vegetable oil is corn oil.
Adding urea and methanol into vegetable oil, reacting at-12 deg.C for 15 hr to form crystals, and separating to obtain solid urea clathrate;
the mass ratio of urea to methanol to vegetable oil is 3.
The preparation method of the fertilizer comprises the following steps:
adding monoammonium phosphate, potassium sulfate, urea (crushed by a crusher), ammonium bicarbonate, a urea inclusion compound and bentonite into a granulation roller, granulating under the action of steam, cooling, sieving, adding talc powder accounting for one thousandth of the total mass, and packaging to obtain the fertilizer.
The beneficial effects of the present invention are further illustrated below in connection with the test data:
test No.)
Test material
1. The material and the method are as follows:
1.1 Test site: the method is manufactured by the Ministry of agriculture and technology Limited company of the tobacco terrace, and the detection place is a warehouse of the Ministry of agriculture and technology Limited company of the tobacco terrace.
1.2 test samples: comparative example 1 (which corresponds to example 1 except that no urea inclusion compound was added), comparative example 2 (which corresponds to example 1 except that the amount of urea inclusion compound added was 3%), comparative example 3 (which corresponds to example 1 except that the amount of urea inclusion compound added was 12%), example 1, example 2, comparative example 4 (which corresponds to example 3 except that no urea inclusion compound was added), comparative example 5 (which corresponds to example 3 except that the amount of urea inclusion compound added was 3%), comparative example 6 (which corresponds to example 3 except that the amount of urea inclusion compound added was 12%), and example 3 and example 4.
1.3 Design of experiments
The production of 60 tons each was carried out by counting the yield and counting the caking rate in the methods of comparative example 1 (which was identical to example 1 except that no urea inclusion was added), comparative example 2 (which was identical to example 1 except that the amount of urea inclusion was 3%), comparative example 3 (which was identical to example 1 except that the amount of urea inclusion was 12%), comparative example 1, example 2, comparative example 4 (which was identical to example 3 except that no urea inclusion was added), comparative example 5 (which was identical to example 3 except that the amount of urea inclusion was 3%), comparative example 6 (which was identical to example 3 except that the amount of urea inclusion was 12%), and example 3 and example 4.
Yield = finished product mass/total mass of material charged 100%; the granularity of the finished product is required to be 2-4mm and accounts for more than 85% of the total mass;
the caking test was: each test takes 40 bags, each bag weighs 50kg, 20 bags are taken as a group, the bags are exactly 20 high, the bags are made in parallel and placed for 40 days, the bottommost bag is taken, two persons are lifted in parallel for 1.2 m, the free falling body is thrown once in a positive and negative direction, the bags are unpacked, sieves with sieves of 2mm and 4mm are used, particles between 2mm and 4mm are taken for weighing, m1 is obtained, the weight of the whole bag is m2, and the caking rate is = (m 2-m 1)/m 2 x 100%.
2. The result of the detection
The yield and caking rate results are shown in Table 1
TABLE 1
| Total mass of material (kg) charged | Finished product quality (kg) | Yield (%) | m2（kg） | m1（kg） | Caking ratio (%) | |
| Comparative example 1 | 80.78 | 60.19 | 74.51 | 50.13 | 38.51 | 23.18 |
| Comparative example 2 | 82.28 | 60.27 | 73.25 | 50.23 | 46.09 | 8.24 |
| Comparison 3 | 116.16 | 60.09 | 51.73 | 50.09 | 49.64 | 0.90 |
| Example 1 | 83.45 | 60.21 | 72.15 | 50.14 | 49.52 | 1.24 |
| Example 2 | 85.85 | 60.25 | 70.18 | 50.22 | 49.68 | 1.08 |
| Comparative example 4 | 94.00 | 60.27 | 64.12 | 50.18 | 37.50 | 25.27 |
| Comparative example 5 | 96.72 | 60.23 | 62.27 | 50.09 | 44.93 | 10.3 |
| Comparative example 6 | 137.54 | 60.12 | 43.71 | 50.08 | 49.49 | 1.18 |
| Example 3 | 98.46 | 60.18 | 61.12 | 50.22 | 49.53 | 1.37 |
| Example 4 | 100.03 | 60.27 | 60.25 | 50.16 | 49.53 | 1.26 |
As can be seen from comparison of the data of comparative example 1, example 1 and example 2, the addition of urea inclusion compound has a certain influence on the yield of the product, but can significantly reduce the caking rate of the product.
As can be seen from comparison of the data of comparative example 4, example 3 and example 4, the addition of urea inclusion compound has a certain influence on the yield of the product, but can obviously reduce the caking rate of the product.
As can be seen from comparison of data of comparative example 2, comparative example 3, and comparative example 1 and comparative example 2, the addition amount of the urea clathrate in comparative example 2 is relatively small, and the influence on the yield is not great, but a high caking rate still exists, and the result is unsatisfactory, while comparative example 3, in which the addition amount of the urea clathrate is relatively large, can better solve the problem of the caking rate of the product, but has a great influence on the yield, which increases the production cost, and is not preferable, and the inventor thinks that the possible reason for the phenomenon is: because the steam pressure corresponding to granulation is 4-6Mpa, the temperature of steam is higher, so that the temperature of the added materials is increased during granulation, the urea inclusion compound is a reversible reaction, part of the urea inclusion compound is decomposed at higher temperature, saturated grease is released, the saturated grease is attached to the surface of the fertilizer under the influence of the density of the saturated grease, and three possibilities exist, one is excessive, if the amount is too large, the materials are not easy to be soaked by water due to the coverage of the saturated grease, so that the granulation is influenced, and the yield is reduced; one is that the amount of the released saturated grease is small, as in example 1 and example 2, fertilizer raw material particles (the particle size of the raw material is usually less than 0.07mm, the particle size of the finished product is 2-4mm, which causes the difference of the specific surface area of the raw material and the finished product, the specific surface area of the raw material is large, and the specific surface area of the finished product is small) can not be completely covered, thereby reducing the influence on the yield, in the granulation process, the saturated grease generated along with the finished product is attached to the surface of the finished product particles, so that oil wrapping is formed, the powder is bonded after dusting, the powder is prevented from falling, thereby forming the oil wrapping and the powder wrapping, the particles are doubly protected, thereby not affecting the yield, but also solving the problem of product caking; one is that the amount is very small, as in comparative example 2, neither raw material nor finished product particles can be wrapped, and the performance is that the yield is not affected, and the excellent anti-caking effect cannot be shown.
In addition, because the urea inclusion compound absorbs saturated grease, and the saturated grease has stable chemical properties, the urea inclusion compound has better stability after being released and is wrapped on the surface of the fertilizer, thereby better playing a role in preventing caking.
Similarly, the data comparison of comparative example 5, comparative example 6, example 3 and example 4 is similar to the data comparison of comparative example 2, comparative example 3, example 1 and example 2, and the principle is consistent.
In conclusion, the fertilizer contains urea inclusion compound, wherein the total content of nitrogen, phosphorus pentoxide and potassium oxide is more than or equal to 45%, the nitrogen content is more than or equal to 20%, and the urea inclusion compound accounts for 5-10% of the total mass of the fertilizer, so that the problem of caking of a high-concentration fertilizer with the nitrogen content of more than or equal to 20% can be solved, and the yield of fertilizer production is not influenced.
Test No. two
Test material
1. The material and the method are as follows:
1.1 Test site: su shop of Xixia city of Yantai city of Shandong province Zhenshu shop.
1.2 Test samples: comparative 1 (which is identical to example 1 except that no urea inclusion is added), example 1 and example 2.
1.3 And (3) experimental design: taking 6 mu of land with similar land parcels as test cells, taking 1 mu of land per cell, preparing a control 1 (except that no urea inclusion is added, the other parts are consistent with example 1), 100kg of the control 1 and the control 2, randomly drawing the test cells, applying 50kg of test fertilizer per cell base, and making parallel samples which are marked as sample 1 and sample 2; the variety of corn sown is Longping 206.
1.4 Testing and detecting: and (4) corn yield.
Except for different test treatments, the test conditions of the test are consistent.
2. Test results
The corn yields are shown in Table 2
TABLE 2
| Sample 1 yield (kg) | Sample 2 yield (kg) | Average yield (kg) | |
| Comparative example 1 | 427.6 | 429.4 | 428.5 |
| Example 1 | 447.2 | 446.5 | 446.85 |
| Example 2 | 452.3 | 453.5 | 452.9 |
As can be seen from table 2, the addition of urea inclusion did not affect the yield of the plants, i.e. there were no side effects, the protocol was feasible, even with a slight increase in yield.
Claims (6)
1. A fertilizer, the total content of nitrogen, phosphorus pentoxide and potassium oxide in the fertilizer is more than or equal to 45%, and the nitrogen content is more than or equal to 20%, characterized by comprising urea inclusion compound, the addition of the urea inclusion compound accounts for 5-10% of the total mass of the fertilizer; the urea inclusion compound is a product obtained by purifying unsaturated fatty acid in vegetable oil by a urea inclusion method.
2. The fertilizer material of claim 1, said vegetable oil being one or more of soybean oil, corn oil, walnut oil and sunflower oil.
3. The fertilizer of claim 2, wherein urea and a solvent are added into vegetable oil, and the mixture reacts at a temperature of-20 to-4 ℃ for 10 to 20 hours to form crystals, and the crystals are separated, and the collected solid is a urea inclusion compound;
the solvent is one or two of methanol or ethanol.
4. The fertilizer according to claim 2 or 3, wherein the mass ratio of urea, methanol and vegetable oil is 2-4.
5. A method of preparing a fertiliser as claimed in any of claims 1 to 4, characterised in that it is carried out according to the following steps:
adding fertilizer raw materials containing nitrogen, phosphorus pentoxide and potassium oxide, auxiliary materials and a urea clathrate compound into a granulation roller, granulating, cooling, screening, dusting and packaging to obtain a fertilizer;
the fertilizer raw material containing nitrogen, phosphorus pentoxide and potassium oxide is one or more of urea, ammonium chloride, ammonium sulfate, monoammonium phosphate, diammonium phosphate, potassium chloride and potassium sulfate; the auxiliary material is one or more of bentonite, attapulgite and kaolin.
6. The method for preparing the fertilizer according to any one of claims 1 to 4, wherein the mass ratio of the fertilizer raw materials containing nitrogen, phosphorus pentoxide and potassium oxide, auxiliary materials and urea inclusion compound is 75-95-5-10; the dusting powder is used for forming barriers among particles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310012530.7A CN115894125B (en) | 2023-01-05 | 2023-01-05 | Fertilizer and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310012530.7A CN115894125B (en) | 2023-01-05 | 2023-01-05 | Fertilizer and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115894125A true CN115894125A (en) | 2023-04-04 |
| CN115894125B CN115894125B (en) | 2024-06-07 |
Family
ID=86476457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310012530.7A Active CN115894125B (en) | 2023-01-05 | 2023-01-05 | Fertilizer and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115894125B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51125376A (en) * | 1975-04-14 | 1976-11-01 | Asahi Chem Ind Co Ltd | Process for preparing urea clathrate compounds of ascorbic acid deriva tives |
| CN101121654A (en) * | 2007-07-24 | 2008-02-13 | 山东大学 | Supercritical CO2 extraction separation purification method for silkworm chrysalis alpha-linolenic acid |
| US20210317078A1 (en) * | 2018-10-02 | 2021-10-14 | Crommelin Agricoatings Pty Ltd | Composition and method for treating urea |
-
2023
- 2023-01-05 CN CN202310012530.7A patent/CN115894125B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51125376A (en) * | 1975-04-14 | 1976-11-01 | Asahi Chem Ind Co Ltd | Process for preparing urea clathrate compounds of ascorbic acid deriva tives |
| CN101121654A (en) * | 2007-07-24 | 2008-02-13 | 山东大学 | Supercritical CO2 extraction separation purification method for silkworm chrysalis alpha-linolenic acid |
| US20210317078A1 (en) * | 2018-10-02 | 2021-10-14 | Crommelin Agricoatings Pty Ltd | Composition and method for treating urea |
Non-Patent Citations (1)
| Title |
|---|
| 郭剑霞: "《多不饱和脂肪酸的分离纯化及功能研究》", vol. 1, 中国轻工业出版社, pages: 70 - 71 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115894125B (en) | 2024-06-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110198779B (en) | Method for granulating polyhalite | |
| CN102153424B (en) | Novel method for preparing humic acid urea slow release fertilizer | |
| EP1986981A1 (en) | Preparations with improved urease-inhibiting effect and urea-containing fertilizers containing the latter | |
| CN107188766A (en) | A kind of coal ash for manufacturing for silicon composite fertilizer method | |
| CN102807445B (en) | Preparation method for controlled-release fertilizer special for mechanically applied rice | |
| WO2020034372A1 (en) | Medium trace element mixture and preparation method of medium trace element-wrapped fertilizer | |
| CN102977891A (en) | Soil conditioner produced from ardealite as well as producing method and using method of soil conditioner | |
| CN113683455A (en) | Functional organic and inorganic fertilizer and preparation method thereof | |
| CN103224431B (en) | Fertilizer for preventing soil hardening and preparation method thereof | |
| CN112624841B (en) | Multi-effect compound fertilizer for sugarcane, preparation method and use method | |
| CN103524272A (en) | High-tower long-acting compound fertilizer and preparation method thereof | |
| CN105503368A (en) | High tower biomass carbon-based fertilizer special for potatoes and preparation method of high tower biomass carbon-based fertilizer | |
| CN115894125A (en) | Fertilizer and preparation method thereof | |
| CN102584492B (en) | Compound type sustained or controlled release nitrogen fertilizer special for crops in Huang huai hai area, preparation method and applications thereof | |
| WO2017206744A1 (en) | Granular ammonium phosphate having quick- and long-acting sulfur and zinc, and preparation method therefor | |
| CN111492932A (en) | Rice seedling raising matrix taking iron tailings as raw materials and preparation method | |
| EP0386043B1 (en) | Granular ammonium sulphate and process for the production thereof | |
| RU2741118C1 (en) | Npk-si fertilizer, a method for production thereof and use thereof | |
| CN104311341B (en) | A kind of prilling process of alkaline fertilizer | |
| CN107746300B (en) | Sulfur-phosphorus-diammonium binary compound fertilizer and method for producing sulfur-phosphorus-diammonium binary compound fertilizer by utilizing phosphorus-ammonium byproduct | |
| CN108069766A (en) | A kind of bio-feritlizer and the method for producing bio-feritlizer | |
| CN104725108A (en) | Formula of organic fertilizer for improving hardening of saline-alkali soil and grainy production | |
| CN110981640A (en) | Functional stable fertilizer and preparation method and application thereof | |
| EP4293000A1 (en) | Method for the manufacture of a solid, particulate fertilizer composition comprising an additive | |
| NL2034243B1 (en) | Albic soil improve and fertilizing package fertilize and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20240417 Address after: 112599 Modern Agriculture High tech Zone, Changtu County, Tieling City, Liaoning Province Applicant after: Liaoning skovo Agricultural Technology Co.,Ltd. Country or region after: China Address before: 264000 2101-167, Floor 21, Building 1, 200 Changjiang Road, Yantai Area, China (Shandong) Pilot Free Trade Zone, Yantai City, Shandong Province Applicant before: Yantai Qianpeng Agricultural Technology Co.,Ltd. Country or region before: China |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant |