CN110436994A - A kind of preparation method of high nitrogen content liquid slow-release nitrogenous fertilizer - Google Patents
A kind of preparation method of high nitrogen content liquid slow-release nitrogenous fertilizer Download PDFInfo
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- CN110436994A CN110436994A CN201910723816.XA CN201910723816A CN110436994A CN 110436994 A CN110436994 A CN 110436994A CN 201910723816 A CN201910723816 A CN 201910723816A CN 110436994 A CN110436994 A CN 110436994A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C3/00—Fertilisers containing other salts of ammonia or ammonia itself, e.g. gas liquor
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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
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Abstract
The invention discloses a kind of preparation methods of high nitrogen content liquid slow-release nitrogenous fertilizer, belong to the preparation method technical field of slow-release nitrogen fertilizer.A kind of preparation method of high nitrogen content liquid slow-release nitrogenous fertilizer, component part include urea, paraformaldehyde, aminated compounds and ammonium hydroxide；It further include ferrous sulfate, boric acid, copper sulphate, magnesium sulfate and ammonium molybdate；The present invention overcomes the drawbacks of previous ureaformaldehyde slow release chemical fertilizer nitrogen early period insufficient supply, solve the problems, such as that amount of urea is big, efficiency time is short, turnover rate is big simultaneously, it is sprayed directly on plant leaf surface, Nutrient Absorption rate is higher, quick-acting, holding effect, efficient feature are had both, nitrogen absorptivity is effectively increased；It can arbitrarily be mixed with water, pesticide, directly be sprayed on crop, solve the non-uniform situation of solid chemical fertilizer broadcast application, nitrogen discharge and volatilization can be substantially reduced, protect surrounding enviroment；Various trace elements are added simultaneously, promote root growth and Chlorophyll synthesis.
Description
Technical field
The present invention relates to the preparation method technical field of slow-release nitrogen fertilizer more particularly to a kind of high nitrogen content liquid slow-release nitrogen
The preparation method of fertilizer.
Background technique
Fertilizer is capital goods in the agricultural sector important elements, is grain " grain ", and China supports generation with the arable land in the world 7%
The population on boundary 20% or so, the effect of chemical fertilizer is performed meritorious deeds never to be obliterated, and since founding of New, China's chemical fertilizer industry is rapidly developed,
Fertilizer application amount increases 463 times within 1952-1994 years, effectively improves crop yield, first of crop fertilization three elements
Nitrogenous fertilizer is one of most important agricultural production input, it has weight to crop yield, culture fertility, improvement agricultural product quality
It acts on, nitrogenous fertilizer is huge to agricultural effect, and in terms of global average level, nitrogenous fertilizer accounts for the 60% of fertilizer total amount, Chinese chemical fertilizer production
In situation, nitrogenous fertilizer proportion is horizontal much higher than international average, and nitrogenous fertilizer is a kind of most chemical fertilizer of Chinese agriculture consumption, nitrogenous fertilizer
Importance promote a large amount of applied nitrogens of many peasants, but due to the fertilizing method of shortcoming science, the reasons such as fertilizer quality is low,
Cause China's fertilizer comprehensive utilization ratio lower, a large amount of fertilizer nutrients are lost, though some regional applied nitrogens, there are still nitrogenous fertilizer use
How amount not foot phenomenon, improve utilization rate of nitrogen fertilizer, become urgent problem to be solved, and utilization rate of fertilizer is low also results in a system
The problem of column, such as the wasting of resources, environmental pollution, increase production cost.
Summary of the invention
The purpose of the present invention is to solve problems of the prior art, and a kind of high nitrogen content liquid proposed
The preparation method of slow-release nitrogen fertilizer.
To achieve the goals above, present invention employs following technical solutions:
A kind of preparation method of high nitrogen content liquid slow-release nitrogenous fertilizer, component part include urea, paraformaldehyde, amine
Object and ammonium hydroxide are closed, further includes ferrous sulfate, boric acid, copper sulphate, magnesium sulfate and ammonium molybdate.
Preferably, each component part is formed by following mass parts:
Urea: 60-120 parts；
Paraformaldehyde: 22-38 parts；
Aminated compounds: 0.5-3 parts；
Ammonium hydroxide: 10-70 parts；
Ferrous sulfate: 0.1-1 parts；
Boric acid: 0.1-0.2 parts；
Copper sulphate: 0.05-0.2 parts；
Magnesium sulfate: 0.05-0.1 parts；
Ammonium molybdate: 0.1-0.3 parts.
Preferably, it is made of following steps:
S1: the urea, aminated compounds and ammonium hydroxide of certain mass part are mixed；
S2: after mixing evenly, the paraformaldehyde of certain mass part is added；
S3: pH value is controlled in the range of 8-12 by aminated compounds and ammonium hydroxide, is then started to warm up；
S4: after reaction, cooling；
S5: the ferrous sulfate, boric acid, copper sulphate, magnesium sulfate and ammonium molybdate of certain mass part is added, is sufficiently stirred；
S6: it is cooled to room temperature.
Preferably, the mixing in the step S1 carries out in a kettle, and ammonium hydroxide solid content used is 25%.
Preferably, temperature controls between 50-95 DEG C after the heating in the step S3.
Preferably, the reaction time in the step S4 is 0.5-5 hours, is cooled to 40 DEG C.
Preferably, the time being sufficiently stirred in the step S5 is 30 minutes.
Preferably, the aminated compounds is diethylamine, triethylamine, diethanol amine, triethanolamine, monoammonium sulfate, phosphoric acid
One of diammonium.
Compared with prior art, the present invention provides a kind of preparation method of high nitrogen content liquid slow-release nitrogenous fertilizer, have with
It is lower the utility model has the advantages that
The preparation method of the high nitrogen content liquid slow-release nitrogenous fertilizer, first by the urea of certain mass part, aminated compounds,
Ammonium hydroxide is added in reaction kettle, adds paraformaldehyde after mixing evenly, since the paraformaldehyde of addition is solid, Er Qiewei
Additional that water is added, so the solid content for working it out fertilizer is higher, effective ingredient is more, dehydrated after can also removing from
Journey improves efficiency, and saves the time.PH is controlled within the scope of 8-12 by ammonium hydroxide and aminated compounds, utilizes ammonium hydroxide and amine
Class compound adjusts PH while supplementing nitrogen, and the temperature after heating is controlled at 50-95 DEG C, and the reaction time arrives for 0.5h
5h is cooled to 40 DEG C after reaction, adds ferrous sulfate, boric acid, copper sulphate, magnesium sulfate and ammonium molybdate, is sufficiently stirred
Room temperature is cooled to after 30 minutes.Ferrous sulfate be adjusted soil pH value, promote the formation of chlorophyll, can prevent and treat flowers and trees because
Iron deficiency and cause yellows；Boric acid can further adjust the pH value of soil, improve the growth result of crops；Copper sulphate
It can be used for killing fungi, reduce pest infestation；The highly dissoluble of magnesium sulfate can improve soil, increase the growth of crops；Molybdic acid
Ammonium is easy to purify and dissolve, and can increase the using effect of fertilizer.Aminated compounds is diethylamine, triethylamine, diethanol amine, three
One of ethanol amine, monoammonium sulfate, Diammonium phosphate (DAP)；By the way that a large amount of urea, ammonium hydroxide and aminated compounds is added, so that slow
26-35% can be reached by releasing the nitrogen content in fertilizer, and nitrogen content is higher than other slow-release fertilizers, and fertilizer efficiency is more preferable.
The present invention overcomes the drawbacks of previous ureaformaldehyde slow release chemical fertilizer nitrogen early period insufficient supply, while solving urea
The problem that dosage is big, efficiency time is short, turnover rate is big, is sprayed directly on plant leaf surface, and Nutrient Absorption rate is higher, has both speed
Effect, holding effect, efficient feature persistently can provide nutrient to crops in a long time, effectively improve nitrogen absorptivity.It is slow
Release in fertilizer the macromolecule component containing the complete ammonium hydroxide of unreacted, urea and different chain length simultaneously, unreacted complete urea and ammonia
Water can play a role immediately, be quick-acting parts, and quick-acting nitrogen can work after foliar spray.The macromolecule component of synthesis is holding effect
Part can adhere to slow release nitrogen on plant leaf surface, constantly be absorbed by plants in a long time, plays a role,
Lasting period longest was up to 60 days.
Liquid slow-release fertilizer salt index≤1.5 are conducive to mitigate soil hardening, salinization of soil；Using various trace elements,
Promote root growth and Chlorophyll synthesis；Solid content is high, and nitrogen content is high, and nitrogen content can reach 26-35%；Product water dispersion
Property and excellent stability, can be mixed with most Pesticidal products, be directly sprayed on crop, medical fluid wetting can be improved and spread, subtract
Few drift, to improve drug effect and fertilizer efficiency；Foliage-spray does not burn leaf, and to crop safety, it is uneven to solve solid chemical fertilizer broadcast application
Even situation can also be sprayed in conjunction with unmanned plane, accomplish that time and labour saving is laborsaving, and nitrogen discharge and volatilization, protection week can be substantially reduced
Surrounding environment reduces loss of nitrogen fertilizer, improves benefit.
Specific embodiment
In the description of the present invention, it is to be understood that, term " on ", "lower", "front", "rear", "left", "right",
The orientation or positional relationship of the instructions such as "top", "bottom", "inner", "outside", is merely for convenience of description of the present invention and simplification of the description,
Therefore it is not considered as limiting the invention.
Embodiment 1:
A kind of preparation method of high nitrogen content liquid slow-release nitrogenous fertilizer, component part include urea, paraformaldehyde, diethylamine
And ammonium hydroxide, it further include ferrous sulfate, boric acid, copper sulphate, magnesium sulfate and ammonium molybdate.
Each component part is formed by following mass parts:
Urea: 60 parts；
Paraformaldehyde: 22 parts；
Diethylamine: 0.5 part；
Ammonium hydroxide: 20 parts；
Ferrous sulfate: 0.1 part；
Boric acid: 0.1 part；
Copper sulphate: 0.05 part；
Magnesium sulfate: 0.05 part；
Ammonium molybdate: 0.1 part.
It is made of following steps:
S1: the urea, diethylamine and ammonium hydroxide of certain mass part are mixed；
S2: after mixing evenly, the paraformaldehyde of certain mass part is added；
S3: it with diethylamine and ammonium hydroxide by pH value adjustment to 8.5, then starts to warm up；
S4: after reaction, cooling；
S5: the ferrous sulfate, boric acid, copper sulphate, magnesium sulfate and ammonium molybdate of certain mass part is added, is sufficiently stirred；
S6: it is cooled to room temperature.
Mixing in step S1 carries out in a kettle.
Temperature control is at 95 DEG C after heating in step S3.
Reaction time in step S4 is 0.5 hour, is cooled to 40 DEG C.
The time being sufficiently stirred in step S5 is 30 minutes.
In the present invention, the urea, aminated compounds and ammonium hydroxide of above-mentioned mass parts are added in reaction kettle first, stirred
Paraformaldehyde is added after uniformly, PH is then controlled 8.5 by ammonium hydroxide and aminated compounds, is started to warm up, the temperature after heating
Then degree control starts to react at 95 DEG C, the reaction time is 0.5 hour, after reaction, is cooled to 40 DEG C, it is sub- that sulfuric acid is added
Iron, boric acid, copper sulphate, magnesium sulfate and ammonium molybdate are cooled to room temperature after being sufficiently stirred 30 minutes.
The liquid slow-release nitrogenous fertilizer synthesized is detected according to GB/T 8572, HG/T 4137-2010, testing result
It is as follows:
| Solid content | Total nitrogen content | Quick-acting nitrogen contents | It is sustained nitrogen content | |
| Embodiment 1 | 70% | 31.5% | 13.5% | 18% |
Embodiment 2:
A kind of preparation method of high nitrogen content liquid slow-release nitrogenous fertilizer, component part include urea, paraformaldehyde, three ethyl alcohol
Amine and ammonium hydroxide further include ferrous sulfate, boric acid, copper sulphate, magnesium sulfate and ammonium molybdate.
Each component part is formed by following mass parts:
Urea: 70 parts；
Paraformaldehyde: 38 parts；
Triethanolamine: 3 parts；
Ammonium hydroxide: 30 parts；
Ferrous sulfate: 0.5 part；
Boric acid: 0.2 part；
Copper sulphate: 0.1 part；
Magnesium sulfate: 0.1 part；
Ammonium molybdate: 0.3 part.
It is made of following steps:
S1: the urea, triethanolamine and ammonium hydroxide of certain mass part are mixed；
S2: after mixing evenly, the paraformaldehyde of certain mass part is added；
S3: it by triethanolamine and ammonium hydroxide by pH value adjustment to 9.2, then starts to warm up；
S4: after reaction, cooling；
S5: the ferrous sulfate, boric acid, copper sulphate, magnesium sulfate and ammonium molybdate of certain mass part is added, is sufficiently stirred；
S6: it is cooled to room temperature.
Mixing in step S1 carries out in a kettle.
Temperature control is at 60 DEG C after heating in step S3.
Reaction time in step S4 is 4 hours, is cooled to 40 DEG C.
The time being sufficiently stirred in step S5 is 30 minutes.
In the present invention, the urea, aminated compounds and ammonium hydroxide of above-mentioned mass parts are added in reaction kettle first, stirred
Paraformaldehyde is added after uniformly, then PH is adjusted to 9.2 by triethanolamine, is started to warm up, the temperature control of heating exists
60 DEG C, then start to react, the reaction time is 4 hours, after reaction, is cooled to 40 DEG C, be added ferrous sulfate, boric acid,
Copper sulphate, magnesium sulfate and ammonium molybdate are cooled to room temperature after being sufficiently stirred 30 minutes,
The liquid slow-release nitrogenous fertilizer synthesized is detected according to GB/T 8572, HG/T 4137-2010, testing result
It is as follows:
| Solid content | Total nitrogen content | Quick-acting nitrogen contents | It is sustained nitrogen content | |
| Embodiment 1 | 65% | 27% | 11% | 16% |
Embodiment 3:
A kind of preparation method of high nitrogen content liquid slow-release nitrogenous fertilizer, component part include urea, paraformaldehyde, di(2-ethylhexyl)phosphate
Ammonium and ammonium hydroxide further include ferrous sulfate, boric acid, copper sulphate, magnesium sulfate and ammonium molybdate.
Each component part is formed by following mass parts:
Urea: 100 parts；
Formaldehyde: 32 parts；
Triethanolamine: 1.8 parts；
Ammonium hydroxide: 70 parts；
Ferrous sulfate: 1 part；
Boric acid: 0.15 part；
Copper sulphate: 0.08 part；
Magnesium sulfate: 0.08 part；
Ammonium molybdate: 0.2 part.
It is made of following steps:
S1: the urea of certain mass part, Diammonium phosphate (DAP) and ammonium hydroxide are mixed；
S2: after mixing evenly, the paraformaldehyde of certain mass part is added；
S3: it by Diammonium phosphate (DAP) and ammonium hydroxide by pH value adjustment to 10.6, then starts to warm up；
S4: after reaction, cooling；
S5: the ferrous sulfate, boric acid, copper sulphate, magnesium sulfate and ammonium molybdate of certain mass part is added, is sufficiently stirred；
S6: it is cooled to room temperature.
Mixing in step S1 carries out in a kettle.
Temperature control is at 80 DEG C after heating in step S3.
Reaction time in step S4 is 3 hours, is cooled to 40 DEG C.
The time being sufficiently stirred in step S5 is 30 minutes.
In the present invention, the urea of above-mentioned mass parts, Diammonium phosphate (DAP), ammonium hydroxide are added in reaction kettle first, stirred evenly
After add paraformaldehyde, PH is adjusted to 10.6 by ammonium hydroxide and Diammonium phosphate (DAP), is started to warm up, the temperature control after heating
Then system starts to react, reaction time 3h at 80 DEG C, after reaction, be cooled to 40 DEG C, be added ferrous sulfate, boric acid,
Copper sulphate, magnesium sulfate and ammonium molybdate are cooled to room temperature after being sufficiently stirred 30 minutes.
The liquid slow-release nitrogenous fertilizer synthesized is detected according to GB/T 8572, HG/T 4137-2010, testing result
It is as follows:
| Solid content | Total nitrogen content | Quick-acting nitrogen contents | It is sustained nitrogen content | |
| Embodiment 1 | 68% | 33.5% | 14.2% | 19.3% |
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited to
This, anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention
And its inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of preparation method of high nitrogen content liquid slow-release nitrogenous fertilizer, which is characterized in that component part includes urea, poly first
Aldehyde, aminated compounds and ammonium hydroxide.
2. a kind of preparation method of high nitrogen content liquid slow-release nitrogenous fertilizer according to claim 1, which is characterized in that further include
Ferrous sulfate, boric acid, copper sulphate, magnesium sulfate and ammonium molybdate.
3. a kind of preparation method of high nitrogen content liquid slow-release nitrogenous fertilizer according to claim 1, which is characterized in that using more
Polyformaldehyde replaces traditional liquid formaldehyde.
4. a kind of preparation method of high nitrogen content liquid slow-release nitrogenous fertilizer according to claim 2, which is characterized in that each composition
Part is formed by following mass parts:
Urea: 60-120 parts；
Paraformaldehyde: 22-38 parts；
Aminated compounds: 0.5-3 parts；
Ammonium hydroxide: 10-70 parts；
Ferrous sulfate: 0.1-1 parts；
Boric acid: 0.1-0.2 parts；
Copper sulphate: 0.05-0.2 parts；
Magnesium sulfate: 0.05-0.1 parts；
Ammonium molybdate: 0.1-0.3 parts.
5. a kind of preparation method of high nitrogen content liquid slow-release nitrogenous fertilizer according to claim 4, which is characterized in that use with
Lower step is made:
S1: the urea, aminated compounds, ammonium hydroxide of certain mass part are mixed；
S2: after mixing evenly, the paraformaldehyde of certain mass part is added；
S3: pH value is controlled in the range of 8-12 by aminated compounds and ammonium hydroxide, is then started to warm up；
S4: after reaction, cooling；
S5: the ferrous sulfate, boric acid, copper sulphate, magnesium sulfate and ammonium molybdate of certain mass part is added, is sufficiently stirred；
S6: it is cooled to room temperature.
6. a kind of preparation method of high nitrogen content liquid slow-release nitrogenous fertilizer according to claim 5, which is characterized in that the step
Mixing in rapid S1 carries out in a kettle, and ammonium hydroxide solid content used is 25%.
7. a kind of preparation method of high nitrogen content liquid slow-release nitrogenous fertilizer according to claim 5, which is characterized in that the step
Temperature controls between 50-95 DEG C after heating in rapid S3.
8. a kind of preparation method of high nitrogen content liquid slow-release nitrogenous fertilizer according to claim 5, which is characterized in that the step
Reaction time in rapid S4 is 0.5-5 hours, is cooled to 40 DEG C.
9. a kind of preparation method of high nitrogen content liquid slow-release nitrogenous fertilizer according to claim 5, which is characterized in that the step
The time being sufficiently stirred in rapid S5 is 30 minutes.
10. a kind of preparation method of high nitrogen content liquid slow-release nitrogenous fertilizer according to claim 1, which is characterized in that described
Aminated compounds is one of diethylamine, triethylamine, diethanol amine, triethanolamine, monoammonium sulfate, Diammonium phosphate (DAP).
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Cited By (7)
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| CN112142511A (en) * | 2020-09-14 | 2020-12-29 | 四川科太农业科技有限公司 | Liquid nitrogen fertilizer and preparation method thereof |
| CN112174729A (en) * | 2020-09-28 | 2021-01-05 | 湖北富邦科技股份有限公司 | High-concentration liquid slow-release nitrogen fertilizer and preparation method thereof |
| CN113912447A (en) * | 2021-10-27 | 2022-01-11 | 哈撒韦(青岛)生物科技有限公司 | Liquid urea formaldehyde slow release fertilizer and production method thereof |
| CN114057522A (en) * | 2021-11-17 | 2022-02-18 | 中化农业（临沂）研发中心有限公司 | Biological stimulator composition containing double-effect slow-release nitrogen and preparation method thereof |
| CN114149291A (en) * | 2021-12-30 | 2022-03-08 | 河北萌帮水溶肥料股份有限公司 | Slow-release liquid nitrogen fertilizer, preparation method and application thereof in fruit trees |
| CN114634377A (en) * | 2020-12-15 | 2022-06-17 | 沈阳化工研究院有限公司 | Clear liquid type urea formaldehyde long-acting fertilizer and preparation and application thereof |
| CN114685191A (en) * | 2022-06-02 | 2022-07-01 | 中北大学 | High-temperature heterogeneous polycondensation simplified preparation process of urea formaldehyde slow release fertilizer and application method thereof |
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| CN112142511A (en) * | 2020-09-14 | 2020-12-29 | 四川科太农业科技有限公司 | Liquid nitrogen fertilizer and preparation method thereof |
| CN112174729A (en) * | 2020-09-28 | 2021-01-05 | 湖北富邦科技股份有限公司 | High-concentration liquid slow-release nitrogen fertilizer and preparation method thereof |
| CN114634377A (en) * | 2020-12-15 | 2022-06-17 | 沈阳化工研究院有限公司 | Clear liquid type urea formaldehyde long-acting fertilizer and preparation and application thereof |
| CN113912447A (en) * | 2021-10-27 | 2022-01-11 | 哈撒韦(青岛)生物科技有限公司 | Liquid urea formaldehyde slow release fertilizer and production method thereof |
| CN114057522A (en) * | 2021-11-17 | 2022-02-18 | 中化农业（临沂）研发中心有限公司 | Biological stimulator composition containing double-effect slow-release nitrogen and preparation method thereof |
| CN114057522B (en) * | 2021-11-17 | 2023-02-24 | 中化农业（临沂）研发中心有限公司 | Biological stimulin type liquid fertilizer containing double-effect slow-release nitrogen and preparation method thereof |
| CN114149291A (en) * | 2021-12-30 | 2022-03-08 | 河北萌帮水溶肥料股份有限公司 | Slow-release liquid nitrogen fertilizer, preparation method and application thereof in fruit trees |
| CN114149291B (en) * | 2021-12-30 | 2022-07-22 | 河北萌帮水溶肥料股份有限公司 | Slow-release liquid nitrogen fertilizer, preparation method and application thereof in fruit trees |
| CN114685191A (en) * | 2022-06-02 | 2022-07-01 | 中北大学 | High-temperature heterogeneous polycondensation simplified preparation process of urea formaldehyde slow release fertilizer and application method thereof |
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Application publication date: 20191112 |