CN112457116A - Nitrogen fertilizer synergistic fertilizer and preparation method thereof - Google Patents
Nitrogen fertilizer synergistic fertilizer and preparation method thereof Download PDFInfo
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- CN112457116A CN112457116A CN202011374476.3A CN202011374476A CN112457116A CN 112457116 A CN112457116 A CN 112457116A CN 202011374476 A CN202011374476 A CN 202011374476A CN 112457116 A CN112457116 A CN 112457116A
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- urea
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/40—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting fertiliser dosage or release rate; for affecting solubility
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C9/00—Fertilisers containing urea or urea compounds
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/90—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting the nitrification of ammonium compounds or urea in the soil
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- 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
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- Soil Sciences (AREA)
- Fertilizers (AREA)
Abstract
The embodiment of the invention provides a nitrogen fertilizer synergistic fertilizer and a preparation method thereof, wherein the preparation method comprises the following steps: heating and melting the urea dust to obtain urea solution; zinc sulfate is mixed with urea solution to obtain a first material; mixing three raw materials of urease inhibitor, nitrification inhibitor and alginic acid to obtain a material II; mixing bentonite and the material II in proportion, and uniformly mixing to obtain a material III; mixing the first material and bentonite to obtain a fourth material; mixing the material IV and the material III to prepare a semi-finished raw material; and carrying out an extrusion granulation process on the semi-finished raw materials to obtain the nitrogen fertilizer synergistic fertilizer. In the method, the long-acting effect of the common fertilizer can be realized by combining the common urea or the common compound fertilizer taking the urea as a nitrogen source. Unlike the prior stable urea products, this technology does not need to be combined with urea systems and can be used alone. The method bypasses the matched research of the stable urea production process, has simple and convenient production, can remove the cost of the auxiliary agent and the solvent, and reduces the system burden.
Description
Technical Field
The invention relates to the technical field of agricultural fertilizers, in particular to a nitrogen fertilizer synergistic fertilizer and a preparation method thereof.
Background
At present, under the market background that the domestic demand is weak and the international market urea price continuously declines, a plurality of urea enterprises seek the technical upgrade of urea products, and the production of the urea products with long-acting, functional and environment-friendly high added value is an effective method for breaking the current urea predicament. It is common practice within the industry to introduce inhibitors into urea production systems to produce stable urea containing inhibitors. In the practical application process, the selection of the temperature and the solvent auxiliary agent by adding the inhibitor is limited, and the problems that the decomposition of the medicament is ineffective due to overhigh production temperature control, the auxiliary agent needs to be additionally added for the indissolvable medicament, the cost is increased, the system pressure is increased by the chemical medicament and the like generally exist in the current common urease inhibitor and nitrification inhibitor. Therefore, the difficult point of transformation and upgrading of urea factories is formed by selecting a proper additive combination and a dosing mode to be butted with the technology of a urea production system.
Disclosure of Invention
In order to seek an effective additive combination and a proper dosing mode, the invention provides a nitrogen fertilizer synergistic fertilizer and a preparation method thereof, and the specific technical scheme is as follows:
in a first aspect, an embodiment of the present invention provides a method for preparing a nitrogen fertilizer synergistic fertilizer, including:
heating and melting the urea dust to obtain urea solution;
mixing zinc sulfate with urea solution, mixing the zinc sulfate with the urea solution: mixing urea at a ratio of 5-12:1, and keeping the temperature at 50-90 ℃ to obtain a first material;
mixing three raw materials of urease inhibitor, nitrification inhibitor and alginic acid to obtain a material II;
mixing bentonite and the material II in proportion, and uniformly mixing to obtain a material III;
mixing the first material and bentonite to obtain a fourth material;
mixing the material IV and the material III to prepare a semi-finished raw material; and carrying out an extrusion granulation process on the semi-finished raw materials to obtain the nitrogen fertilizer synergistic fertilizer.
Further preferably, the zinc sulfate: urea 8: 1.
Further preferably, the temperature for the heat preservation is 80 ℃.
Further preferably, the mixing ratio of the urease inhibitor, the nitrification inhibitor and the alginic acid is 1: 2: 10.
more preferably, the mixing ratio of the first material to the bentonite is 3: 1.
Further preferably, the mixing ratio of the material four to the material three is 2: 1.
Further preferably, the zinc sulfate is zinc sulfate heptahydrate.
In a second aspect, the embodiment of the invention provides a nitrogen fertilizer synergistic fertilizer prepared by the method, wherein the mass fraction of the urease inhibitor is more than 1.28%, the mass fraction of the nitrification inhibitor is more than 2.56%, the mass fraction of the alginic acid is more than 12.8%, the mass fraction of the zinc sulfate is more than 3.30%, and the mass fraction of the urea is more than 44.4%.
The embodiment of the invention provides a preparation method of a nitrogen fertilizer synergistic fertilizer, which comprises the following steps: heating and melting the urea dust to obtain urea solution; mixing zinc sulfate with urea solution, mixing the zinc sulfate with the urea solution: mixing urea at a ratio of 5-12:1, and keeping the temperature at 50-90 ℃ to obtain a first material; mixing three raw materials of urease inhibitor, nitrification inhibitor and alginic acid to obtain a material II; mixing bentonite and the material II in proportion, and uniformly mixing to obtain a material III; mixing the first material and bentonite to obtain a fourth material; mixing the material IV and the material III to prepare a semi-finished raw material; and carrying out an extrusion granulation process on the semi-finished raw materials to obtain the nitrogen fertilizer synergistic fertilizer. By adopting the preparation method of the nitrogen fertilizer synergistic fertilizer provided by the invention, the long-acting effect of the common fertilizer can be realized by combining common urea or common compound fertilizer taking urea as a nitrogen source. Unlike the prior stable urea products, this technology does not need to be combined with urea systems and can be used alone. The method bypasses the matched research of the stable urea production process, has simple and convenient production, can remove the cost of the auxiliary agent and the solvent, and reduces the system burden.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
FIG. 1 is a flow chart of a preparation method of a nitrogen fertilizer synergistic fertilizer provided by the embodiment of the invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1, in a first aspect, an embodiment of the present invention provides a method for preparing a nitrogen fertilizer synergistic fertilizer, including:
in a first aspect, an embodiment of the present invention provides a method for preparing a nitrogen fertilizer synergistic fertilizer, including:
s110, heating and melting urea dust to obtain urea solution; reasons for selecting urea dust: low cost and fast melting. In the actual processing process, the heating temperature can be determined by a user according to the actual dissolution situation, and what should be stated in this embodiment is that, as long as the urea dust is melted, how to melt, the melting temperature, auxiliary equipment such as a melted container, and process conditions are not limited in this embodiment.
S120, mixing zinc sulfate with urea solution, namely mixing the zinc sulfate with the urea solution: mixing urea at a ratio of 5-12:1, and keeping the temperature at 50-90 ℃ to obtain a first material; the prepared material I is a bonding agent which can play a role in bonding; the finished product of the first material is a cementing polymer. In practical application, a user can determine zinc sulfate according to actual conditions: urea ratio, when the concentration of the gum is low, a proper amount of urea can be added, for example, when zinc sulfate: when urea is 5:1, the concentration of the first material is higher, and at this time, a user can increase zinc sulfate, for example, zinc sulfate: the proportion of urea is added to 8:1, at this time, the concentration of jelly is improved, at this time, zinc sulfate can be further added, and the upper line value can be zinc sulfate: urea 12: 1.
S130, mixing three raw materials, namely a urease inhibitor, a nitrification inhibitor and alginic acid to obtain a material II; in this embodiment, in the process of mixing the three raw materials, the ratio between the three materials is not limited in this embodiment, that is, it is to be explained in this embodiment that the three materials are combined to be the second material.
S140, mixing bentonite and the second-class material in proportion, and uniformly mixing to obtain a third material; and adding bentonite into the material II to prepare a material III, so that the uniformity of the material II is higher, the material II with higher uniformity is used as the material III, and in the actual adding process, the bentonite and the material II are mixed in proportion to form an optimal adding mode.
S150, mixing the material I with bentonite to obtain a material IV; in order to cool the first material, bentonite may be added to the first material, specifically, the amount of the added bentonite may be determined according to the actual temperature change, for example, when the mass ratio of the added bentonite to the first material is 1:1, the time required for cooling the first material to the normal temperature is 30min, and when the mass ratio of the added bentonite to the first material is 2:1, the time required for cooling the first material to the normal temperature is 25 min; when the mass ratio of the added bentonite to the first material is 3:1, the time required for cooling the first material to the normal temperature is 20min, and so on, and a user can determine the amount of the added bentonite according to the actual situation.
S160, mixing the material IV and the material III to obtain a semi-finished raw material; and carrying out an extrusion granulation process on the semi-finished raw materials to obtain the nitrogen fertilizer synergistic fertilizer. In the actual operation process, the ratio of the material four to the material three is not limited in this embodiment, for example, it may be a 1:1 mixture, or a 2:1 mixture, or a 1:2 mixture, and the nitrogen fertilizer synergistic fertilizer prepared by different mixing schemes may obtain synergistic fertilizers with different effects, but the scheme of the application aims to prepare a synergistic fertilizer which does not need to be combined with a urea system, and the synergistic effect of the synergistic waste itself is good or bad, and does not affect the technical problem solved by the application.
The embodiment of the invention provides a preparation method of a nitrogen fertilizer synergistic fertilizer, which comprises the following steps: heating and melting the urea dust to obtain urea solution; mixing zinc sulfate with urea solution, mixing the zinc sulfate with the urea solution: mixing urea at a ratio of 5-12:1, and keeping the temperature at 50-90 ℃ to obtain a first material; mixing three raw materials of urease inhibitor, nitrification inhibitor and alginic acid to obtain a material II; mixing bentonite and the material II in proportion, and uniformly mixing to obtain a material III; mixing the first material and bentonite to obtain a fourth material; mixing the material IV and the material III to prepare a semi-finished raw material; and carrying out an extrusion granulation process on the semi-finished raw materials to obtain the nitrogen fertilizer synergistic fertilizer. By adopting the preparation method of the nitrogen fertilizer synergistic fertilizer provided by the invention, the long-acting effect of the common fertilizer can be realized by combining common urea or common compound fertilizer taking urea as a nitrogen source. Unlike the prior stable urea products, this technology does not need to be combined with urea systems and can be used alone. The method bypasses the matched research of the stable urea production process, has simple and convenient production, can remove the cost of the auxiliary agent and the solvent, and reduces the system burden.
In one embodiment, the zinc sulfate: urea 8: 1.
In one embodiment, the incubation temperature is 80 ℃.
In a specific embodiment, the mixing ratio of the urease inhibitor, the nitrification inhibitor and the alginic acid is 1: 2: 10.
in one embodiment, the first material and bentonite are mixed in a ratio of 3: 1.
In one embodiment, the mixture ratio of material four to material three is 2: 1.
In a specific embodiment, the zinc sulfate is zinc sulfate heptahydrate.
In a second aspect, the embodiment of the invention provides a nitrogen fertilizer synergistic fertilizer prepared by the method, wherein the mass fraction of the urease inhibitor is more than 1.28%, the mass fraction of the nitrification inhibitor is more than 2.56%, the mass fraction of the alginic acid is more than 12.8%, the mass fraction of the zinc sulfate is more than 3.30%, and the mass fraction of the urea is more than 44.4%. In the using process, 2-5kg of the urea is used in each mu of land in combination with the common urea, so that the fertilizer effect of the stable urea can be achieved. Can also be directly used as a raw material of a tragic mixed fertilizer.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A preparation method of a nitrogen fertilizer synergistic fertilizer is characterized by comprising the following steps:
heating and melting the urea dust to obtain urea solution;
mixing zinc sulfate with urea solution, mixing the zinc sulfate with the urea solution: mixing urea at a ratio of 5-12:1, and keeping the temperature at 50-90 ℃ to obtain a first material;
mixing three raw materials of urease inhibitor, nitrification inhibitor and alginic acid to obtain a material II;
mixing bentonite and the material II in proportion, and uniformly mixing to obtain a material III;
mixing the first material and bentonite to obtain a fourth material;
mixing the material IV and the material III to prepare a semi-finished raw material; and carrying out an extrusion granulation process on the semi-finished raw materials to obtain the nitrogen fertilizer synergistic fertilizer.
2. The method for preparing a nitrogen fertilizer synergistic fertilizer according to claim 1, wherein the zinc sulfate: urea 8: 1.
3. The method for preparing nitrogen fertilizer synergistic fertilizer according to claim 1, characterized in that the temperature of heat preservation is 80 ℃.
4. The method for preparing nitrogen fertilizer synergistic fertilizer according to claim 1, characterized in that the mixing ratio of urease inhibitor, nitrification inhibitor and alginic acid is 1: 2: 10.
5. the method for preparing nitrogen fertilizer synergistic fertilizer according to claim 1, characterized in that the mixing ratio of the first material to the bentonite is 3: 1.
6. The method for preparing nitrogen fertilizer synergistic fertilizer according to claim 1, wherein the mixing ratio of the material four to the material three is 2: 1.
7. The method for preparing a nitrogen fertilizer synergistic fertilizer according to claim 1, characterized in that the zinc sulfate is zinc sulfate heptahydrate.
8. A nitrogen fertilizer synergistic fertilizer prepared by the method of any one of claims 1 to 7, characterized in that the mass fraction of urease inhibitor is more than 1.28%, the mass fraction of nitrification inhibitor is more than 2.56%, the mass fraction of alginic acid is more than 12.8%, the mass fraction of zinc sulfate is more than 3.30%, and the mass fraction of urea is more than 44.4%.
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| CN202011374476.3A CN112457116A (en) | 2020-11-30 | 2020-11-30 | Nitrogen fertilizer synergistic fertilizer and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114195575A (en) * | 2021-11-17 | 2022-03-18 | 锦西天然气化工有限责任公司 | Synergistic particle, preparation method thereof and bulk blending fertilizer |
| CN115340429A (en) * | 2022-08-01 | 2022-11-15 | 锦西天然气化工有限责任公司 | Nitrogen fertilizer synergist and preparation method and production device thereof |
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| CN102515968A (en) * | 2012-01-04 | 2012-06-27 | 广西新方向化学工业有限公司 | Multifunctional synergistic nitrogen fertilizer and preparation method thereof |
| CN105367175A (en) * | 2015-12-02 | 2016-03-02 | 锦西天然气化工有限责任公司 | Production process for zinc-containing urea |
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2020
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Patent Citations (5)
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| CN101434504A (en) * | 2007-11-16 | 2009-05-20 | 中国科学院沈阳应用生态研究所 | Synergistic slow release nitrogen fertilizer and preparation thereof |
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| CN102515968A (en) * | 2012-01-04 | 2012-06-27 | 广西新方向化学工业有限公司 | Multifunctional synergistic nitrogen fertilizer and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114195575A (en) * | 2021-11-17 | 2022-03-18 | 锦西天然气化工有限责任公司 | Synergistic particle, preparation method thereof and bulk blending fertilizer |
| CN115340429A (en) * | 2022-08-01 | 2022-11-15 | 锦西天然气化工有限责任公司 | Nitrogen fertilizer synergist and preparation method and production device thereof |
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Application publication date: 20210309 |