CN106631630A - Organic slow-release nitrogen fertilizer and method for preparing same - Google Patents
Organic slow-release nitrogen fertilizer and method for preparing same Download PDFInfo
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- CN106631630A CN106631630A CN201610812386.5A CN201610812386A CN106631630A CN 106631630 A CN106631630 A CN 106631630A CN 201610812386 A CN201610812386 A CN 201610812386A CN 106631630 A CN106631630 A CN 106631630A
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000000618 nitrogen fertilizer Substances 0.000 title abstract description 12
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 103
- 239000004202 carbamide Substances 0.000 claims abstract description 55
- KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 claims abstract description 32
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 claims abstract description 18
- YDEXUEFDPVHGHE-GGMCWBHBSA-L disodium;(2r)-3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Na+].[Na+].COC1=CC=CC(C[C@H](CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O YDEXUEFDPVHGHE-GGMCWBHBSA-L 0.000 claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000004108 freeze drying Methods 0.000 claims abstract description 4
- 235000013877 carbamide Nutrition 0.000 claims description 48
- 239000005416 organic matter Substances 0.000 claims description 36
- 229960004643 cupric oxide Drugs 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 claims description 7
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 6
- 239000012467 final product Substances 0.000 claims description 4
- 239000000047 product Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000000376 reactant Substances 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims description 3
- 241000196324 Embryophyta Species 0.000 claims description 2
- 241000192783 Hakea sericea Species 0.000 claims description 2
- 239000000284 extract Substances 0.000 claims 1
- 210000003608 fece Anatomy 0.000 claims 1
- 239000010871 livestock manure Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 52
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 26
- 239000003337 fertilizer Substances 0.000 abstract description 13
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract 4
- 239000005751 Copper oxide Substances 0.000 abstract 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 1
- 239000012295 chemical reaction liquid Substances 0.000 abstract 1
- 229910000431 copper oxide Inorganic materials 0.000 abstract 1
- 239000001257 hydrogen Substances 0.000 abstract 1
- 229910052739 hydrogen Inorganic materials 0.000 abstract 1
- 239000011819 refractory material Substances 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000001291 vacuum drying Methods 0.000 abstract 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 17
- 229920005610 lignin Polymers 0.000 description 13
- 239000000463 material Substances 0.000 description 7
- 230000035484 reaction time Effects 0.000 description 5
- 239000002689 soil Substances 0.000 description 4
- 238000013268 sustained release Methods 0.000 description 4
- 239000012730 sustained-release form Substances 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 230000001934 delay Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 210000002700 urine Anatomy 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- -1 phenolic aldehyde Chemical class 0.000 description 2
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 1
- 244000025254 Cannabis sativa Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000001099 ammonium carbonate Substances 0.000 description 1
- 235000012501 ammonium carbonate Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 125000000542 sulfonic acid group Chemical group 0.000 description 1
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C9/00—Fertilisers containing urea or urea compounds
-
- 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
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Fertilizers (AREA)
Abstract
The invention provides a method for preparing organic slow-release urea. The method includes dissolving sodium lignin sulfonate and urea in a beaker to obtain mixtures, then regulating the pH (potential of hydrogen) of the mixtures; transferring the mixtures into a four-opening flask, adding peracetic acid and copper oxide into the mixtures, carrying out reaction, and carrying out freeze drying on concentrated reaction liquid after reaction is completely carried out so as to obtain dry powder; extracting the dry powder by the aid of absolute ethyl alcohol to remove unreacted urea, carrying out vacuum drying on products to obtain the organic slow-release urea and analyzing the nitrogen content of the organic slow-release urea. The method has the advantages that the utilization rate of the urea can be increased as compared the organic slow-release urea, which is an organic slow-release nitrogen fertilizer, to slow-release fertilizers enveloped by refractory materials in current markets, the organic slow-release nitrogen fertilizer can be completely degraded, and accordingly harm on ecological environments can be prevented; the method includes simple steps and is convenient to implement and high in practicality.
Description
Technical field
The invention belongs to organic matter slow-release nitrogen fertilizer preparation field, more particularly to a kind of organic matter slow-release nitrogen fertilizer and its preparation side
Method.
Background technology
Traditional nitrogenous fertilizer, such as urea, ammonium carbonate can cause the heavy losses of nitrogen due to approach such as leaching and denitrifications,
Loss amount is up to 55%, and the utilization rate of such nitrogen is very low.Simultaneously excessive use inorganic fertilizer also results in lacking for carbon in soil
Lose and leaching of nitrate loss causes body of groundwater to be contaminated.
In order to improve the utilization rate of fertilizer and reduce the impact to environment, slow release fertilizer obtains the green grass or young crops of enterprise and scientific research personnel
Look at.Popular slow-release nitrogen fertilizer is mainly coated carbamide on domestic market, and the material of coating mainly includes phenolic aldehyde, urea
The materials such as aldehyde, polyethylene, the advantage of this kind of slow release fertilizer is that still coated fertilizer is difficult to be degraded release time length in soil,
Degradable resin is even adopted, the shortening of its degradation time is also limited, and can not possibly be completely degraded, therefore limited
The popularization and application of this kind of fertilizer.Not only there is biological material such as lignin higher pore structure to strengthen the gas permeability of soil
And water holding capacity, most important this kind of material can be completely degraded in soil.Simultaneously lignin has higher biology
Stability, the stronger ability to Resistance to microbes, if lignin can not only be slowed down into fertilizer as the carrier of slow-release material
The rate of release of nutrient, improves the utilization rate of fertilizer, moreover it is possible to bring good ecological environment benefit.
The content of the invention
In order to overcome above-mentioned deficiency, the invention provides a kind of organic matter slow-release carbamide of environmental protection and its preparation side
Method.Compared to the slow release fertilizer prepared as coating using difficult degradation material in existing market, the organic matter slow-release nitrogen fertilizer of the present invention,
The utilization rate of urea can not only be improved, can also be completely degraded will not bring harm to ecological environment.
To achieve these goals, the present invention is adopted the following technical scheme that：
A kind of preparation method of organic matter slow-release carbamide, including：
Under Peracetic acid and cupric oxide existence condition, reaction is modified as raw material with urea and sodium lignin sulfonate；
After reaction terminates, product is concentrated, is dried, unreacted urea is removed, being obtained final product organic matter sustained release urine
Element.
Industrial lignin sodium sulfonate and urea are modified reaction for raw material, and the part nitrogen in urea can be converted into wood
Then quality is slowly discharged nitrogen by the biodegradation process of lignin with the nitrogen of chemical bonds.The addition of Peracetic acid
The benzene ring structure that can make sodium lignin sulfonate is destroyed, oxidized portion sulfonic acid group, effectively improves the knot of lignin and urea
Close activity.Cupric oxide can be greatly reduced the activation energy of lignin and urea reaction, promote lignin oxidation to be degraded to small molecule,
So as to expose more carboxyls, increase the binding site of lignin and nitrogen, improve the load capacity of nitrogen.
Preferably, the sodium lignin sulfonate and the mass ratio of urea are 8～10：4～7.
Preferably, the mass ratio of the Peracetic acid and cupric oxide is 100～120：1～3.Research finds：When peroxide second
The mass ratio of acid and cupric oxide is less than 40：When 1, conversion rate of urea is low, and reaction rate is slow, low yield, and ammonium nitrogen content declines bright
It is aobvious.When the mass ratio of Peracetic acid and cupric oxide is more than 100：When 1, the nitrogen content of slow-release nitrogen fertilizer is not high, and side reaction increases, reaction
Product purity declines.
Preferably, the modified condition is：2～6h is reacted at 60～100 DEG C.
Preferably, the sodium lignin sulfonate is prepared using following raw material, and the raw material includes：Needlebush, leaf wood or
Herbaceous plant.
Preferably, the pH value of the modified-reaction is 3.0-5.0.
Preferably, the Peracetic acid can be replaced hydrogen peroxide.
Present invention also offers a kind of preparation method of preferably organic matter slow-release carbamide, specifically includes following steps：
(1) sodium lignin sulfonate, urea and water are weighed, after being well mixed, pH is adjusted to 3.0-5.0, mixed liquor is obtained；
(2) in the mixed liquor of step (1) add mass fraction for mixed liquor gross mass 5%-20% Peracetic acid and
Mass fraction is the cupric oxide of mixed liquor gross mass 0.05～0.08%, is heated to 60～100 DEG C, reacts 2～6h；
(3) after reaction terminates, by reactant liquor concentration, freeze-drying, dry powder is obtained；Dry powder is extracted 3-5 time with absolute ethyl alcohol
To remove unreacted urea, obtain final product.
Organic matter slow-release carbamide prepared by the above-mentioned method of any one of present invention.
Organic matter slow-release carbamide prepared by the above-mentioned method of any one of present invention all can be used for biological plantation or fertilizer system
Make, obtain preferably effect, reached the requirement of concerned countries and international standard.
Beneficial effects of the present invention
(1) organic matter slow-release carbamide of the invention.Compared to what is prepared as coating using difficult degradation material in existing market
Slow release fertilizer, the organic matter slow-release nitrogen fertilizer of the present invention, can not only improve the utilization rate of urea, and can also be completely degraded will not be to
Ecological environment brings harm.
(2) organic matter slow-release carbamide (or organic matter slow-release nitrogen fertilizer) of the invention uses sodium lignin sulfonate former as making
Material.Pulping and paper-making industry produces every year the industrial lignin of flood tide, and the high-qualityization utilization rate of current lignin is also very low, Hen Duoqi
Black liquor is directly carried out burning process by industry, and some little companies are even directly by black liquid discharging, the pollution ring that this not only can be serious
Border also result in the significant wastage of resource simultaneously.The present invention not only realizes high-qualityization of lignin using lignin as primary raw material
Utilize, also protect environment.
(3) price of industrial lignin is very low on market, therefore the organic matter slow-release fertilizer that the present invention is provided is prepared into
This is relatively low and reasonable.
(4) organic matter slow-release carbamide, method process is simple safety, the letter of product subsequent treatment are prepared using the inventive method
It is single, meanwhile, the oxidation system environmental protection is free from environmental pollution.
Specific embodiment
Feature of present invention and other correlated characteristics are described in further detail by the following examples, in order to the same industry
The understanding of technical staff：
Embodiment 1
(1) the sodium lignin sulfonate 10g, the water of urea 7g and 70mL are weighed to stir in beaker to being completely dissolved, is used
20% sulfuric acid solution adjusts pH to 3.0.
(2) mixed liquor of step (1) is transferred into 4 mouthfuls of flasks (with thermometer, condenser pipe and constant pressure funnel), and is added
Enter the Peracetic acid of mixed liquor quality 5% and 0.05% cupric oxide, be heated to 60 DEG C, react 2h.
(3) after reaction terminates, again freeze-drying obtains dry powder after reactant liquor is concentrated；Dry powder is extracted 3 times with absolute ethyl alcohol
To remove unreacted urea, then analysis of nitrogen content is carried out to product.
The total nitrogen and ammonium nitrogen content of resulting organic matter slow-release carbamide is respectively 6.12% and 0.75%.
Embodiment 2
As described in Example 1, except that being the hydrogen peroxide for Jia 5% in step (2).Resulting organic matter sustained release urine
The total nitrogen and ammonium nitrogen content of element is respectively 4.37% and 0.31%.
Embodiment 3
As described in Example 1, except that pH is 4.0 in step (1).The total nitrogen of resulting organic matter slow-release carbamide and
Ammonium nitrogen content is respectively 7.55% and 0.62%.
Embodiment 4
As described in Example 1, except that Peracetic acid addition is 10% in step (2).Resulting organic matter delays
The total nitrogen and ammonium nitrogen content for releasing urea is respectively 8.77% and 0.92%.
Embodiment 5
As described in Example 1, except that reaction temperature is 80 DEG C in step (2).Resulting organic matter slow-release carbamide
Total nitrogen and ammonium nitrogen content be respectively 6.06% and 0.35%.
Embodiment 6
As described in Example 1, except that in step (2) reaction time be 4h.Resulting organic matter slow-release carbamide
Total nitrogen and ammonium nitrogen content are respectively 8.16% and 0.88%.
Embodiment 7
As described in Example 3, except that peroxyacetic acid concentration is 10% in step (2).Resulting organic matter sustained release
The total nitrogen and ammonium nitrogen content of urea is respectively 12.33% and 1.48%.
Embodiment 8
As described in Example 3, except that reaction temperature is 80 DEG C in step (2).Resulting organic matter slow-release carbamide
Total nitrogen and ammonium nitrogen content be respectively 10.53% and 1.25%.
Embodiment 9
As described in Example 3, except that in step (2) reaction time be 4h.Resulting organic matter slow-release carbamide
Total nitrogen and ammonium nitrogen content are respectively 10.77% and 1.35%.
Embodiment 10
As described in Example 8, except that Peracetic acid addition is 10% in step (2).Resulting organic matter delays
The total nitrogen and ammonium nitrogen content for releasing urea is respectively 14.69% and 2.55%.
Embodiment 11
As described in Example 8, except that in step (2) reaction time be 4h.Resulting organic matter slow-release carbamide
Total nitrogen and ammonium nitrogen content are respectively 13.38% and 2.03%.
Embodiment 12
As described in Example 10, except that in step (2) reaction time be 4h.Resulting organic matter slow-release carbamide
Total nitrogen and ammonium nitrogen content are respectively 16.50% and 3.25%.
Embodiment 13
As described in Example 12, except that in step (2) reaction time be 6h.Resulting organic matter slow-release carbamide
Total nitrogen and ammonium nitrogen content are respectively 14.11% and 2.88%.
Embodiment 14
As described in Example 12, except that reaction temperature is 100 DEG C in step (2).Resulting organic matter sustained release urine
The total nitrogen and ammonium nitrogen content of element is respectively 13.75% and 2.67%.
Embodiment 15
As described in Example 12, except that Peracetic acid addition is 15% in step (2).Resulting organic matter delays
The total nitrogen and ammonium nitrogen content for releasing urea is respectively 15.02% and 2.94%.
Embodiment 16
As described in Example 12, except that pH is 5.0 in step (1).The total nitrogen of resulting organic matter slow-release carbamide
And ammonium nitrogen content is respectively 14.62% and 2.54%.
Finally it should be noted that the foregoing is only the preferred embodiments of the present invention, this is not limited to
Bright, although being described in detail to the present invention with reference to the foregoing embodiments, for a person skilled in the art, it is still
Technical scheme described in previous embodiment can be modified, or equivalent is carried out to which part.It is all at this
Within bright spirit and principle, any modification, equivalent substitution and improvements made etc. should be included in protection scope of the present invention
Within.Although the above-mentioned specific embodiment to the present invention is described, not limiting the scope of the invention, institute
Category art personnel should be understood that on the basis of technical scheme those skilled in the art need not pay wound
The various modifications made by the property made work or deformation are still within protection scope of the present invention.
Claims (10)
1. a kind of preparation method of organic matter slow-release carbamide, it is characterised in that include：
Under Peracetic acid and cupric oxide existence condition, reaction is modified as raw material with urea and sodium lignin sulfonate；
After reaction terminates, product is concentrated, is dried, unreacted urea is removed, being obtained final product organic matter slow-release carbamide.
2. the method for claim 1, it is characterised in that the sodium lignin sulfonate is 8～10 with the mass ratio of urea：
4～7.
3. the method for claim 1, it is characterised in that the mass ratio of the Peracetic acid and cupric oxide is 100～
120：1～3.
4. the method for claim 1, it is characterised in that the modified condition is：2～6h is reacted at 60～100 DEG C.
5. the method for claim 1, it is characterised in that the sodium lignin sulfonate is prepared using following raw material, described
Raw material includes：Needlebush, leaf wood or herbaceous plant.
6. the method for claim 1, it is characterised in that the pH value of the modified-reaction is 3.0-5.0.
7. the method for claim 1, it is characterised in that the Peracetic acid can be replaced hydrogen peroxide.
8. the method for claim 1, it is characterised in that specifically include following steps：
(1) sodium lignin sulfonate, urea and water are weighed, after being well mixed, pH is adjusted to 3.0-5.0, mixed liquor is obtained；
(2) mass fraction is added in the mixed liquor of step (1) for the Peracetic acid and quality of mixed liquor gross mass 5%-20%
Fraction is the cupric oxide of mixed liquor gross mass 0.05～0.08%, is heated to 60～100 DEG C, reacts 2～6h；
(3) after reaction terminates, by reactant liquor concentration, freeze-drying, dry powder is obtained；Dry powder absolute ethyl alcohol extracts 3-5 time to remove
Unreacted urea is removed, is obtained final product.
9. the organic matter slow-release carbamide that prepared by the method described in any one of claim 1-8.
10. application of the organic matter slow-release carbamide described in claim 9 in biological plantation or Production of manure.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610812386.5A CN106631630B (en) | 2016-09-09 | 2016-09-09 | Organic matter slow-release nitrogen fertilizer and preparation method thereof |
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| CN201610812386.5A CN106631630B (en) | 2016-09-09 | 2016-09-09 | Organic matter slow-release nitrogen fertilizer and preparation method thereof |
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| Publication Number | Publication Date |
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| CN106631630A true CN106631630A (en) | 2017-05-10 |
| CN106631630B CN106631630B (en) | 2022-11-18 |
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|---|---|---|---|---|
| CN102515980A (en) * | 2011-12-06 | 2012-06-27 | 中国农业科学院农业资源与农业区划研究所 | Organic matter coated urea and production method thereof |
| CN103396266A (en) * | 2013-08-12 | 2013-11-20 | 东营万鑫肥料有限公司 | Organic matter sustained-release urea and preparation method thereof |
| CN103804075A (en) * | 2014-01-20 | 2014-05-21 | 中国农业科学院农业资源与农业区划研究所 | Charcoal-base polyaspartic acid slow-release urea as well as preparation method and application thereof |
| CN103804069A (en) * | 2014-03-14 | 2014-05-21 | 中盐安徽红四方股份有限公司 | Controlled-release fertilizer and production method thereof |
| CN104447133A (en) * | 2014-11-12 | 2015-03-25 | 成都新柯力化工科技有限公司 | Natural macromolecular slow release nitrogen fertilizer and preparation method thereof |
-
2016
- 2016-09-09 CN CN201610812386.5A patent/CN106631630B/en active Active
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| CN102515980A (en) * | 2011-12-06 | 2012-06-27 | 中国农业科学院农业资源与农业区划研究所 | Organic matter coated urea and production method thereof |
| CN103396266A (en) * | 2013-08-12 | 2013-11-20 | 东营万鑫肥料有限公司 | Organic matter sustained-release urea and preparation method thereof |
| CN103804075A (en) * | 2014-01-20 | 2014-05-21 | 中国农业科学院农业资源与农业区划研究所 | Charcoal-base polyaspartic acid slow-release urea as well as preparation method and application thereof |
| CN103804069A (en) * | 2014-03-14 | 2014-05-21 | 中盐安徽红四方股份有限公司 | Controlled-release fertilizer and production method thereof |
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Non-Patent Citations (1)
| Title |
|---|
| 杨益琴等: "尿素和过氧化氢氧化改性木质素磺酸盐制备缓释氮肥", 《中华纸业》 * |
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| CN106631630B (en) | 2022-11-18 |
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Effective date of registration: 20240511 Address after: 750299, 300 meters northeast of the intersection of Changtai Road and Hongyun East Road in Hongguang Town, Helan County Industrial Park, Yinchuan City, Ningxia Hui Autonomous Region Patentee after: Ningxia Wodidi Water and Fertilizer Technology Co.,Ltd. Country or region after: China Address before: 250353 University Road, Changqing District, Ji'nan, Shandong Province, No. 3501 Patentee before: Qilu University of Technology Country or region before: China |