CN102653503B - Double-envelope composite fertilizer production method - Google Patents
Double-envelope composite fertilizer production method Download PDFInfo
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- CN102653503B CN102653503B CN2012101543434A CN201210154343A CN102653503B CN 102653503 B CN102653503 B CN 102653503B CN 2012101543434 A CN2012101543434 A CN 2012101543434A CN 201210154343 A CN201210154343 A CN 201210154343A CN 102653503 B CN102653503 B CN 102653503B
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Abstract
The invention belongs to the technical field of production of composite fertilizers, and relates to a double-envelope composite fertilizer production method. A first layer of envelope is produced by adopting a condensation reaction of industrial formaldehyde, urea and polythene alcohol; a second layer of envelope is produced by adopting complexation of amino acid organic matter and medium and trace elements; the first layer of envelope and the second layer of envelope are sequentially sprayed and wrapped on the outer surface of a mother fertilizer in a rotary drum by a spraying device, so that the double-envelope composite fertilizer is produced. The first layer of envelope contains slow-release water-insoluble nitrogen, has nutrients beneficial for crops and can control nutrients of the inner mother fertilizer which is wrapped to be released slowly to achieve a slow-release effect; and the second layer of envelope is prepared by adding medium and trace elements into a hydrophilic amino acid instant viscose substance and can be quickly sputtered after being contacted with soil, so that amino acid organic substances for improving the micro environment of the soil and the medium or trace elements favorable for the quality of the crops are released. The nutrients are uniformly released and favorable for the growth of the crops.
Description
Technical field
The invention belongs to the compound manure production technical field, relate to a kind of double-contracting film composite fertilizer producing process.
Background technology
Usually only nitrogenous, phosphorus, potassium macroelement of composite fertilizer answers fertilizer in a large number and close middle amount, the trace element that all lacks the farm crop demand except special fertilizer, and composite fertilizer's release rate in soil is fast, and nutrient loss is more.Developed coating or biological slow controlled-release compound fertilizer afterwards, but long because of its Production Flow Chart, cost is high, discharge the unbalanced large-scale popularization that is difficult to of nutrient.
Summary of the invention
The purpose of this invention is to provide a kind of nutrient discharge balanced, step by step discharge macroelement and middle trace element, be conducive to the double-contracting film composite fertilizer producing process of crop growth.
For achieving the above object, the present invention adopts following technical scheme:
A kind of double-contracting film composite fertilizer producing process of the present invention is characterized in that comprising the steps:
Steps A) preparation of coating agent;
The parts by weight proportioning of the first layer coating agent is as follows,
Industrial formol: 50-60
Urea: 30-40
Polyvinyl alcohol: 2-3
During the agent of preparation the first layer coating, at first the industrial formol with said ratio all adds in the reactive tank, add 70% of above-mentioned urea amount while stirring, the polyvinyl alcohol that adds above-mentioned deal again, regulate pH value to 7-7.5 with caustic soda, be warmed up to 90-100 ℃ of reaction 40 minutes, add 20% of above-mentioned urea amount again, regulate pH value to 4-4.5 with formic acid, cool to 75-80 ℃ of reaction one hour; Cool to 40-50 ℃, add 10% of above-mentioned urea amount at last, regulate pH value to 7-7.5 with caustic soda, the agent of the first layer coating;
The parts by weight proportioning of second layer coating agent is as follows,
Water: 30
Glycine: 20-30
L-glutamic acid: 20-30
Calcium carbonate: 10-15
Ferric sulfate: 5-10
Zinc sulfate: 2-5
Sal epsom: 3-5
During the agent of preparation second layer coating, at first in reactive tank, add the water of above-mentioned deal, be warmed up to 60-80 ℃, add all the other various compositions while stirring, regulate pH value to 4.5-5.5 with phosphoric acid or caustic soda, reacted one hour the agent of second layer coating;
Step B) the first layer coating is handled; In revolving drum, female fertilizer is warmed up to 60-80 ℃, start the revolving drum upset, with pressure pump the agent of the first layer coating is sprayed at female fertile particle surface by spray equipment, the consumption of the first layer coating agent is the 3-4% of female fertile quality, and drying forms and coats the female fertile of the first layer coating again;
Step C) second layer coating is handled; Keeping temperature is 60-80 ℃, in revolving drum, with pressure pump the agent of second layer coating is sprayed at above-mentioned steps B by spray equipment) the female fertile particle surface of the coating the first layer coating that produces, the consumption of second layer coating agent is the 4-5% of female fertile quality, drying forms double-contracting film composite fertilizer again.
Production method of the present invention is for to make outsourcing two membranes on female fertile basis in common composite fertilizer: first tunic is urea formaldehyde high molecular slow-release material, its equilibrium is coated on the fertiliser granulates surface and forms the nexine film, this tunic contains slowly-releasing water insoluble nitrogen, itself tool nutrient useful to crop not only, and the female fertilizer nutrient control that allows nexine encase discharges, and reaches slow release effect.Second tunic is amount, trace element in instant spawn-like mass interior interpolation of hydrophilic amino acids, and its quick spring after contacting with soil is separated, and discharges organic and middle amount, the trace element favourable to crop quality of the amino acid that improves the soil microenvironment.Nutrient discharges equilibrium, is conducive to crop growth.
Embodiment
Embodiment 1:
A kind of double-contracting film composite fertilizer producing process step of the present invention is as follows:
Steps A) preparation of coating agent;
The parts by weight proportioning of the first layer coating agent is as follows,
Industrial formol: 50
Urea: 30
Polyvinyl alcohol: 2
During the agent of preparation the first layer coating, at first the industrial formol with said ratio all adds in the reactive tank, add 70% of above-mentioned urea amount while stirring, the polyvinyl alcohol that adds above-mentioned deal again, regulate pH value to 7 with caustic soda, be warmed up to 90 ℃ of reactions 40 minutes, add 20% of above-mentioned urea amount again, regulate pH value to 4 with formic acid, cool to 75 ℃ of reactions one hour; Cool to 40 ℃, add 10% of above-mentioned urea amount at last, regulate pH value to 7 with caustic soda, the agent of the first layer coating;
The parts by weight proportioning of second layer coating agent is as follows,
Water: 30
Glycine: 20
L-glutamic acid: 20
Calcium carbonate: 10
Ferric sulfate: 5
Zinc sulfate: 2
Sal epsom: 3
During the agent of preparation second layer coating, at first in reactive tank, add the water of above-mentioned deal, be warmed up to 60 ℃, add all the other various compositions while stirring, regulate pH value to 4.5 with phosphoric acid or caustic soda, reacted one hour the agent of second layer coating;
Step B) the first layer coating is handled; In revolving drum, female fertilizer is warmed up to 60 ℃, start the revolving drum upset, with pressure pump the agent of the first layer coating is sprayed at female fertile particle surface by spray equipment, the consumption of the first layer coating agent is 3% of female fertile quality, and drying forms and coats the female fertile of the first layer coating again;
Step C) second layer coating is handled; Keeping temperature is 60 ℃, in revolving drum, with pressure pump the agent of second layer coating is sprayed at above-mentioned steps B by spray equipment) the female fertile particle surface of the coating the first layer coating that produces, the consumption of second layer coating agent is 4% of female fertile quality, drying forms double-contracting film composite fertilizer again.
Embodiment 2:
A kind of double-contracting film composite fertilizer producing process of the present invention, its step is as follows:
Steps A) preparation of coating agent;
The parts by weight proportioning of the first layer coating agent is as follows,
Industrial formol: 60
Urea: 40
Polyvinyl alcohol: 3
During the agent of preparation the first layer coating, at first the industrial formol with said ratio all adds in the reactive tank, add 70% of above-mentioned urea amount while stirring, the polyvinyl alcohol that adds above-mentioned deal again, regulate pH value to 7.5 with caustic soda, be warmed up to 100 ℃ of reactions 40 minutes, add 20% of above-mentioned urea amount again, regulate pH value to 4.5 with formic acid, cool to 80 ℃ of reactions one hour; Cool to 50 ℃, add 10% of above-mentioned urea amount at last, regulate pH value to 7.5 with caustic soda, the agent of the first layer coating;
The parts by weight proportioning of second layer coating agent is as follows,
Water: 30
Glycine: 30
L-glutamic acid: 30
Calcium carbonate: 15
Ferric sulfate: 10
Zinc sulfate: 5
Sal epsom: 5
During the agent of preparation second layer coating, at first in reactive tank, add the water of above-mentioned deal, be warmed up to 80 ℃, be sequentially added into all the other various compositions while stirring successively, regulate pH value to 5.5 with phosphoric acid or caustic soda, reacted one hour the agent of second layer coating;
Step B) the first layer coating is handled; In revolving drum, female fertilizer is warmed up to 80 ℃, start the revolving drum upset, with pressure pump the agent of the first layer coating is sprayed at female fertile particle surface by spray equipment, the consumption of the first layer coating agent is 4% of female fertile quality, and drying forms and coats the female fertile of the first layer coating again;
Step C) second layer coating is handled; Keeping temperature is 80 ℃, in revolving drum, with pressure pump the agent of second layer coating is sprayed at above-mentioned steps B by spray equipment) the female fertile particle surface of the coating the first layer coating that produces, the consumption of second layer coating agent is 5% of female fertile quality, drying forms double-contracting film composite fertilizer again.
Embodiment 3:
A kind of double-contracting film composite fertilizer producing process of the present invention, its step is as follows:
Steps A) preparation of coating agent;
The parts by weight proportioning of the first layer coating agent is as follows,
Industrial formol: 55
Urea: 35
Polyvinyl alcohol: 2.5
During the agent of preparation the first layer coating, at first the industrial formol with said ratio all adds in the reactive tank, add 70% of above-mentioned urea amount while stirring, the polyvinyl alcohol that adds above-mentioned deal again, regulate pH value to 7.5 with caustic soda, be warmed up to 95 ℃ of reactions 40 minutes, add 20% of above-mentioned urea amount again, regulate pH value to 4.2 with formic acid, cool to 75 ℃ of reactions one hour; Cool to 45 ℃, add 10% of above-mentioned urea amount at last, regulate pH value to 7.5 with caustic soda, the agent of the first layer coating;
The parts by weight proportioning of second layer coating agent is as follows,
Water: 30
Glycine: 25
L-glutamic acid: 25
Calcium carbonate: 13
Ferric sulfate: 8
Zinc sulfate: 3
Sal epsom: 4
During the agent of preparation second layer coating, at first in reactive tank, add the water of above-mentioned deal, be warmed up to 70 ℃, add all the other various compositions while stirring, regulate pH value to 5 with phosphoric acid or caustic soda, reacted one hour the agent of second layer coating;
Step B) the first layer coating is handled; In revolving drum, female fertilizer is warmed up to 70 ℃, start the revolving drum upset, with pressure pump the agent of the first layer coating is sprayed at female fertile particle surface by spray equipment, the consumption of the first layer coating agent is 3.5% of female fertile quality, and drying forms and coats the female fertile of the first layer coating again;
Step C) second layer coating is handled; Keeping temperature is 70 ℃, in revolving drum, with pressure pump the agent of second layer coating is sprayed at above-mentioned steps B by spray equipment) the female fertile particle surface of the coating the first layer coating that produces, the consumption of second layer coating agent is 4.5% of female fertile quality, drying forms double-contracting film composite fertilizer again.
Claims (1)
1. a double-contracting film composite fertilizer producing process is characterized in that comprising the steps:
Steps A) preparation of coating agent;
The parts by weight proportioning of the first layer coating agent is as follows,
Industrial formol: 50-60
Urea: 30-40
Polyvinyl alcohol: 2-3
During the agent of preparation the first layer coating, at first the industrial formol with said ratio all adds in the reactive tank, add 70% of above-mentioned urea amount while stirring, the polyvinyl alcohol that adds above-mentioned deal again, regulate pH value to 7-7.5 with caustic soda, be warmed up to 90-100 ℃ of reaction 40 minutes, add 20% of above-mentioned urea amount again, regulate pH value to 4-4.5 with formic acid, cool to 75-80 ℃ of reaction one hour; Cool to 40-50 ℃, add 10% of above-mentioned urea amount at last, regulate pH value to 7-7.5 with caustic soda, the agent of the first layer coating;
The parts by weight proportioning of second layer coating agent is as follows,
Water: 30
Glycine: 20-30
L-glutamic acid: 20-30
Calcium carbonate: 10-15
Ferric sulfate: 5-10
Zinc sulfate: 2-5
Sal epsom: 3-5
During the agent of preparation second layer coating, at first in reactive tank, add the water of above-mentioned deal, be warmed up to 60-80 ℃, add all the other various compositions while stirring, regulate pH value to 4.5-5.5 with phosphoric acid or caustic soda, reacted one hour the agent of second layer coating;
Step B) the first layer coating is handled; In revolving drum, female fertilizer is warmed up to 60-80 ℃, start the revolving drum upset, with pressure pump the agent of the first layer coating is sprayed at female fertile particle surface by spray equipment, the consumption of the first layer coating agent is the 3-4% of female fertile quality, and drying forms and coats the female fertile of the first layer coating again;
Step C) second layer coating is handled; Keeping temperature is 60-80 ℃, in revolving drum, with pressure pump the agent of second layer coating is sprayed at above-mentioned steps B by spray equipment) the female fertile particle surface of the coating the first layer coating that produces, the consumption of second layer coating agent is the 4-5% of female fertile quality, drying forms double-contracting film composite fertilizer again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012101543434A CN102653503B (en) | 2012-05-18 | 2012-05-18 | Double-envelope composite fertilizer production method |
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| CN2012101543434A CN102653503B (en) | 2012-05-18 | 2012-05-18 | Double-envelope composite fertilizer production method |
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| CN102653503A CN102653503A (en) | 2012-09-05 |
| CN102653503B true CN102653503B (en) | 2013-07-10 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103319237A (en) * | 2013-06-19 | 2013-09-25 | 山东天山丰耘生态肥业有限公司 | Method for producing three-in-one coated controlled release fertilizer |
| CN104591910A (en) * | 2015-02-11 | 2015-05-06 | 江苏宏洋肥力特生物科技有限公司 | Sustained-release macro-element water-soluble fertilizer granules containing trace elements |
| CN107417355A (en) * | 2017-05-26 | 2017-12-01 | 辽宁希林索农业科技有限公司 | A kind of functional slow-release fertilizer and its production method |
| CN108164348A (en) * | 2018-03-16 | 2018-06-15 | 沃达农业科技股份有限公司 | It is a kind of to be coated slow, release and release control fertilizer and preparation method thereof |
| CN109574748A (en) * | 2018-12-14 | 2019-04-05 | 河北百禾丰化肥有限公司 | A kind of Synergistic slow release coated fertilizer and preparation method thereof |
| CN111004063A (en) * | 2020-01-15 | 2020-04-14 | 扬州大学 | Special rice controlled-release compound fertilizer for improving rice fragrance |
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| BR0308607B1 (en) * | 2002-03-26 | 2013-07-16 | method of producing a particulate urea formaldehyde polymer | |
| CN2771202Y (en) * | 2003-04-21 | 2006-04-12 | 冯树杰 | Two-cladding-layer, two-film-layer spherical fertilizer |
| CN102190519A (en) * | 2010-03-15 | 2011-09-21 | 訾兆举 | Method for producing amino acid controlled-release sulfur-based compound fertilizer |
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Application publication date: 20120905 Assignee: Yingcheng City Shindoo Chemical Industry Co., Ltd. Assignor: Chengdu Xindu Chemical Industry Co., Ltd. Contract record no.: 2014420000074 Denomination of invention: Double-envelope composite fertilizer production method Granted publication date: 20130710 License type: Exclusive License Record date: 20140520 |
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Effective date of registration: 20151118 Address after: 432400, Hubei should be in the city private economic Park Patentee after: Jia Li (Yingcheng) chemical fertilizer Co., Ltd. Address before: 610500 two South Road junction, Xindu Industrial Development Zone, Sichuan, Chengdu Patentee before: Chengdu Xindu Chemical Industry Co., Ltd. |