CN108299110A - A kind of resin coated fertilizers and preparation method thereof using leftover synthesis - Google Patents
A kind of resin coated fertilizers and preparation method thereof using leftover synthesis Download PDFInfo
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- CN108299110A CN108299110A CN201810351625.0A CN201810351625A CN108299110A CN 108299110 A CN108299110 A CN 108299110A CN 201810351625 A CN201810351625 A CN 201810351625A CN 108299110 A CN108299110 A CN 108299110A
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- leftover
- fertilizer
- resin coated
- coating liquid
- fertilizers
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C9/00—Fertilisers containing urea or urea compounds
-
- 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
- C05G5/00—Fertilisers characterised by their form
- C05G5/30—Layered or coated, e.g. dust-preventing coatings
- C05G5/37—Layered or coated, e.g. dust-preventing coatings layered or coated with a polymer
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Fertilizers (AREA)
Abstract
The present invention relates to a kind of resin coated fertilizers and preparation method thereof using leftover synthesis, it is that leftover is passed through into modified obtained leftover coating liquid first, then after being mixed in a certain ratio with curing agent uniformly, pre-heated fertiliser granulates surface is gradually sprayed to by several times, and leftover synthetic resin coated fertilizers smooth fine and close and with Different Nutrients controlled release properties are formed after being cured in situ reaction film forming.Coated fertilizer produced by the invention, not only membrane material there is biodegradable, but also with accurately nutrients release performance, fertilizer releasing period can be controlled accurately and be differed at 16 months.The present invention makes full use of the renewable resource-leftover discarded in life as membrane material, not only turns waste into wealth, reduces harm of the food refuse to environment, and reduce dependence of the membrane material to petroleum resources, realizes the sustainable development of coated fertilizer.The product price is cheap, prepares simply, is not necessarily to solvent, is very suitable for mass producing and promote.
Description
Technical field
The present invention relates to a kind of resin coated fertilizers and preparation method thereof using leftover synthesis, belong to release and release control fertilizer life
Production field.
Background technology
China is that a large agricultural country and the consumption big country of chemical fertilizer, fertilizer consumption account for about world Fertilizer total amount consumed
30%, but utilization rate averagely be only 30-35%.Low utilization rate of fertilizer not only causes the huge waste on economical energy resources,
Also bring serious problem of environmental pollution simultaneously.The appearance of film-coated controlled release fertilizer not only increases the utilization rate of fertilizer, reduces
Conventional fertilizers pollution on the environments, and pass through the factors energy such as composition, thickness and the material character for regulating and controlling coated fertilizer
It is accurately controlled rate of release and the release time of fertilizer nutrient.But the coating controlled-release fertilizer sold on current market, production
Technology requires high, complex process, and coated fertilizer is mainly derived from the non-renewable resources such as oil, expensive and residual film
Shell non-degradable causes secondary pollution to soil.Therefore, invention one kind is cheap, controlled-release effect is excellent, preparation process is simple
Single, easily biological-degradable the novel film-coated controlled release fertilizer of environment-friendly type is of great significance to the sustainable development of agricultural.
Food waste object-leftover is a kind of undeveloped renewable resource with great potential, and the whole world has three every year
/ mono- grain-production is used for the mankind, and there are about 1,300,000,000 ton-grain foods to be dropped and waste, these food waste objects result in grain
The wasting of resources of food production and distribution.And traditional processing mode primarily as animal feed, compost and garbage loading embeading and
It burns, not only energy utilization rate is low, and methane, the carbon dioxide isothermal chamber gas for polluting environment but also burning generation seriously discharge,
Tremendous influence is produced to climate change.Leftover accounts for major portion in food waste object, and ingredient is mainly starch, sugar
Class, protein contain abundant hydroxyl, carboxyl, phosphate and amino groups.So the resin coating material of synthesis has by force
The features such as degree is high, good toughness, good film-forming property, excellent water resistance, easily biological-degradable.In addition, coating controlled-release fertilizer provided by the invention,
Release performance is controlled with accurate nutrient, nutrient release control period can be controlled to be differed at 1 month to 6 months, disclosure satisfy that
The growth demand of Different Crop, market prospects are extremely wide.
Invention content
To solve the above-mentioned problems, the present invention provides a kind of resin coated fertilizers using leftover synthesis and its preparations
Method, it is therefore an objective to provide it is a kind of it is cheap, preparation process is simple, is not necessarily to solvent, quick solidifying, residual film it is degradable utilize leftovers
The resin coated fertilizers and preparation method thereof of dish synthesis.
A kind of resin coated fertilizers synthesized using leftover, are to make leftover coating liquid and curing agent after mixing
Fertiliser granulates surface reaction film forming is sprayed to for coated fertilizer to obtain；
The preparation method of the leftover coating liquid is：By 70~100 parts of leftover powder, 100 parts of modifying agent and 1~3
Part catalyst, which is put into after mixing in reaction kettle, to be uniformly mixed, and heating reaction 0.5~1 hour, cooling at 100~150 DEG C
Afterwards up to leftovers coating liquid；
The leftover derives from the leftover generated in fast food restaurant, restaurant, school lunch service and resident living；
The modifying agent is ethylene glycol, glycerine, 1,4- butanediols, 1,6-HD, diethylene glycol and polyethylene glycol
One or more of mixture；
The catalyst is the mixture of one or more of sulfuric acid, hydrochloric acid or phosphoric acid；
The curing agent is paraphenylene diisocyanate, polymethylene multi-phenenyl isocyanate, two isocyanide of dimethyl diphenyl
The mixture of one or more of acid esters, methyl diphenylene diisocyanate or trimethyl hexamethylene diisocyanate；
The leftover coating liquid, curing agent account for the 25~70% of coated fertilizer weight, 30~75% respectively；
The coated fertilizer for being sprayed at fertiliser granulates surface accounts for the 2.0~7.0% of fertilizer total weight；
The grain size of the fertiliser granulates is 2~5mm；The fertiliser granulates are selected from urea, potassium chloride, NPK composite fertilizers, phosphoric acid
Ammonium dihydrogen, nitrophosphate fertilizer, ammonium hydrogen carbonate, ammonium nitrate, ammonium sulfate, diammonium hydrogen phosphate, potassium sulfate or potassium nitrate.
The invention further relates to a kind of preparation methods of the resin coated fertilizers using leftover synthesis, and steps are as follows：
1,70~100 parts of leftover powder, 100 parts of modifying agent and 1~3 part of catalyst are put into reaction kettle after mixing
In be uniformly mixed, heating reaction 0.5~1 hour at 100~150 DEG C, it is cooling after up to leftovers coating liquid；
2, fertiliser granulates are fitted into rotary drum, are heated to 50-90 DEG C；After mixing by leftover coating liquid and curing agent
Fertiliser granulates surface is sprayed to rapidly, can directly react film forming in fertilizer surface after 5-6 minutes, this coating spraying process repeats
3-5 times, coating controlled-release fertilizer is obtained after cooling.
The leftover powder diameter is 20~60 mesh, uses preceding drying 4 hours at 60 DEG C.
Leftover synthetic resin coated fertilizer provided by the present invention and preparation method thereof, major advantage is：
1. preparing membrane material by primary raw material of leftover, can not only be returned from food waste object from the angle of energy security
The energy is received, and reduces the production cost of film-coated controlled release fertilizer, reduces dependence of the membrane material to petroleum resources, reduces food
Influence of the object waste to environment solves the sustainable development of coating controlled-release fertilizer and caused environmental pollution difficult to degrade
Problem；
2. the resin coating material of leftover synthesis has complete environmental organism degradability, remaining film after nutrients release is complete
Shell can be degradable in 4-5；
It, can be according to the composition of coated fertilizer, membrane wrapping thickness by fertilizer releasing period 3. film-coated controlled release fertilizer nutrients release is excellent
It accurately controls at 1-6 months, the nutrient demand in Different Crop each period can be met, application prospect is extensive.
Specific implementation mode
With reference to specific embodiment, the present invention is further elaborated, but the present invention is not limited to following embodiments.Institute
It is conventional method to state method unless otherwise instructed.The material can obtain unless otherwise instructed from open commercial sources.It is real
It is in powdered to apply leftover used in example, and grain size is 20~60 mesh, is used preceding 4 hours dry at 60 DEG C.
Embodiment 1：
100g ethylene glycol, 70g leftovers powder and the 2g concentrated sulfuric acids are added to three mouthfuls of burnings equipped with mechanical agitation and condenser pipe
In bottle, stirring makes it be uniformly mixed.It is reacted 0.5 hour at 140~150 DEG C, obtains leftover coating liquid.500g is a diameter of
2-5mm granular ureas are fitted into rotary drum, are heated to 50-70 DEG C, then by 4.88g leftovers coating liquid and 4.11g curing agent
Poly methylene poly phenyl poly isocyanate sprays to rapidly urea granules surface after mixing, can be in fertilizer after 5-6 minutes
Film forming is directly reacted on surface, this coating spraying process is repeated 3 times.Finally, fertilizer is cooled to room temperature through cooler, you can packaging,
Storage.Gained Controlled Release Fertilizer membrane material accounts for 5% or so of whole Controlled Release Fertilizer gross weights, and for this fertilizer in 25 DEG C of water or soil, initial stage is molten
Extracting rate is 3.1%, and nutrient control release time is about 60 days.
Embodiment 2：
100g diethylene glycols, 80g leftovers powder and the 3g concentrated sulfuric acids are added to three mouthfuls equipped with mechanical agitation and condenser pipe
In flask, stirring makes it be uniformly mixed.It is reacted 1 hour at 100~110 DEG C, obtains leftover coating liquid.500g is a diameter of
2-5mm granular ureas are fitted into rotary drum, are heated to 50-70 DEG C；Then by 5.45g leftovers coating liquid and 3.32g curing agent
Poly methylene poly phenyl poly isocyanate sprays to rapidly urea surface after mixing, can be in fertilizer surface after 5-6 minutes
Directly reaction film forming, this process are repeated 3 times.Finally, fertilizer is cooled to room temperature through cooler, you can packaging, storage.Gained controlled release
Fertile membrane material accounts for 5% or so of whole Controlled Release Fertilizer gross weights, this fertilizer is in 25 DEG C of water or soil, preliminary solubility 4.2%, supports
Sub-control release time is about 60 days.
Embodiment 3：
70g polyethylene glycol, 30g ethylene glycol, 75g leftovers powder and the 3g concentrated sulfuric acids are added, mechanical agitation and condensation are housed
In the three-necked flask of pipe, stirring makes it be uniformly mixed.It is reacted 1 hour at 110~120 DEG C, obtains leftover coating liquid.It will
The a diameter of 2-5mm granular ureas of 500g are fitted into rotary drum, are heated to 50-70 DEG C；Then by 5.23g leftovers coating liquid and
3.65g curing agent poly methylene poly phenyl poly isocyanates spray to rapidly urea surface after mixing, after 5-6 minutes
Film forming is directly reacted in fertilizer surface, this process is repeated 3 times.Finally, fertilizer is cooled to room temperature through cooler, you can packaging, storage
It deposits.Gained Controlled Release Fertilizer membrane material accounts for 5% or so of whole Controlled Release Fertilizer gross weights, this fertilizer is in 25 DEG C of water or soil, initial stage dissolution
Rate is 2.5%, and nutrient control release time is about 60 days.
Embodiment 4：
100g glycerine, 100g leftovers powder and the 3g concentrated sulfuric acids are added to three mouthfuls of burnings equipped with mechanical agitation and condenser pipe
In bottle, stirring makes it be uniformly mixed.It is reacted 1 hour at 140~150 DEG C, obtains leftover coating liquid.By a diameter of 2- of 500g
5mm granular ureas are fitted into rotary drum, are heated to 50-70 DEG C；Then 5.52g leftovers coating liquid and 3.13g curing agent is more
Polymethylene polyphenyl polyisocyanates sprays to rapidly urea surface after mixing, can be straight in fertilizer surface after 5-6 minutes
Reversed to form a film, this process is repeated 3 times.Finally, fertilizer is cooled to room temperature through cooler, you can packaging, storage.Gained Controlled Release Fertilizer
Membrane material accounts for 5% or so of whole Controlled Release Fertilizer gross weights, this fertilizer is in 25 DEG C of water or soil, preliminary solubility 5.3%, nutrient
It is about 50 days to control release time.
Embodiment 5：
80g polyethylene glycol, 20g ethylene glycol, 80g leftovers powder and the 3g concentrated sulfuric acids are added, mechanical agitation and condensation are housed
In the three-necked flask of pipe, stirring makes it be uniformly mixed.It is reacted 1 hour at 140~150 DEG C, obtains leftover coating liquid.It will
The a diameter of 2-5mm granular ureas of 500g are fitted into rotary drum, are heated to 60-90 DEG C；By 5.37g leftovers coating liquid and 2.44g
Curing agent poly methylene poly phenyl poly isocyanate sprays to rapidly urea surface after mixing, can be in fertilizer after 5-6 minutes
Film forming is directly reacted on material surface, this process is repeated 5 times.Finally, fertilizer is cooled to room temperature through cooler, you can packaging, storage.Institute
It obtains Controlled Release Fertilizer membrane material and accounts for 7% or so of whole Controlled Release Fertilizer gross weights, in 25 DEG C of water or soil, preliminary solubility is this fertilizer
1.4%, nutrient control release time is about 120 days.
Claims (7)
1. a kind of resin coated fertilizers synthesized using leftover, it is characterised in that：It is to mix leftover coating liquid and curing agent
Fertiliser granulates surface reaction film forming is sprayed to after closing uniformly as coated fertilizer to obtain；
The preparation method of the leftover coating liquid is：70~100 parts of leftover powder, 100 parts of modifying agent and 1~3 part are urged
Agent is put into reaction kettle and is uniformly mixed after mixing, and heating reaction 0.5~1 hour at 100~150 DEG C is after cooling
Obtain leftovers coating liquid；
The leftover coating liquid, curing agent account for the 25~70% of coated fertilizer weight, 30~75% respectively；
The coated fertilizer for being sprayed at fertiliser granulates surface accounts for the 2.0~7.0% of fertilizer total weight.
2. a kind of resin coated fertilizers synthesized using leftover as described in claim 1, it is characterised in that：The modification
Agent is the mixed of one or more of ethylene glycol, glycerine, 1,4- butanediols, 1,6-HD, diethylene glycol and polyethylene glycol
Close object.
3. a kind of resin coated fertilizers synthesized using leftover as described in claim 1, it is characterised in that：The catalysis
Agent is the mixture of one or more of sulfuric acid, hydrochloric acid or phosphoric acid.
4. a kind of resin coated fertilizers synthesized using leftover as described in claim 1, it is characterised in that：The solidification
Agent is that paraphenylene diisocyanate, polymethylene multi-phenenyl isocyanate, dimethyl diphenyl diisocyanate, diphenyl methane two are different
The mixture of one or more of cyanate or trimethyl hexamethylene diisocyanate.
5. a kind of resin coated fertilizers synthesized using leftover as described in claim 1, it is characterised in that：The fertilizer
The grain size of grain is 2~5mm.
6. a kind of resin coated fertilizers synthesized using leftover as described in claim 1, it is characterised in that：The fertilizer
Grain is urea, potassium chloride, NPK composite fertilizers, ammonium dihydrogen phosphate, nitrophosphate fertilizer, ammonium hydrogen carbonate, ammonium nitrate, ammonium sulfate, phosphoric acid hydrogen two
Ammonium, potassium sulfate or potassium nitrate.
7. a kind of preparation method of resin coated fertilizers using leftover synthesis as described in claim 1, it is characterised in that：
Steps are as follows：
1) 70~100 parts of leftover powder, 100 parts of modifying agent and 1~3 part of catalyst are put into after mixing in reaction kettle and are mixed
Close uniform, heating reaction 0.5~1 hour at 100~150 DEG C, up to leftovers coating liquid after cooling；
2) fertiliser granulates are fitted into rotary drum, are heated to 50-90 DEG C；Leftover coating liquid and curing agent is rapid after mixing
Fertiliser granulates surface is sprayed to, directly reacts film forming in fertilizer surface after 5-6 minutes, this coating spraying process repeats 3-5 times, cold
But coating controlled-release fertilizer is obtained afterwards；
The leftover powder diameter is 20~60 mesh, uses preceding drying 4 hours at 60 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810351625.0A CN108299110A (en) | 2018-04-19 | 2018-04-19 | A kind of resin coated fertilizers and preparation method thereof using leftover synthesis |
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| CN201810351625.0A CN108299110A (en) | 2018-04-19 | 2018-04-19 | A kind of resin coated fertilizers and preparation method thereof using leftover synthesis |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114031470A (en) * | 2021-12-14 | 2022-02-11 | 新洋丰农业科技股份有限公司 | Preparation method of alkyd resin controlled-release fertilizer |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1810740A (en) * | 2006-02-22 | 2006-08-02 | 华南农业大学 | Coated fertilizer with swill oil as filming material |
| CN102795924A (en) * | 2012-07-26 | 2012-11-28 | 山东农业大学 | Coated controlled-release fertilizer using crop straws as degradable film and production method of fertilizer |
| CN103242086A (en) * | 2013-01-17 | 2013-08-14 | 山东农业大学 | Starch-liquefying modified thermosetting resin film-coated controlled release fertilizer and preparation method thereof |
| CN104030810A (en) * | 2014-06-11 | 2014-09-10 | 合肥江氏农业科技有限公司 | Natural disease-resistant high-yield slow-release compound fertilizer |
| CN105819964A (en) * | 2016-03-23 | 2016-08-03 | 山东绿亨生物工程有限公司 | Microbial fertilizer particles and preparation method thereof |
| CN106518340A (en) * | 2016-10-25 | 2017-03-22 | 潘克稳 | Special fertilizer for pitaya and preparation method therefor |
| CN106588359A (en) * | 2016-12-19 | 2017-04-26 | 山东农业大学 | Animal-oil-based polyurethane coated controlled-release fertilizer and preparation method thereof |
| CN106977287A (en) * | 2017-04-14 | 2017-07-25 | 杨靖民 | Release and release control fertilizer coated fertilizer and its preparation method and application |
-
2018
- 2018-04-19 CN CN201810351625.0A patent/CN108299110A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1810740A (en) * | 2006-02-22 | 2006-08-02 | 华南农业大学 | Coated fertilizer with swill oil as filming material |
| CN102795924A (en) * | 2012-07-26 | 2012-11-28 | 山东农业大学 | Coated controlled-release fertilizer using crop straws as degradable film and production method of fertilizer |
| CN103242086A (en) * | 2013-01-17 | 2013-08-14 | 山东农业大学 | Starch-liquefying modified thermosetting resin film-coated controlled release fertilizer and preparation method thereof |
| CN104030810A (en) * | 2014-06-11 | 2014-09-10 | 合肥江氏农业科技有限公司 | Natural disease-resistant high-yield slow-release compound fertilizer |
| CN105819964A (en) * | 2016-03-23 | 2016-08-03 | 山东绿亨生物工程有限公司 | Microbial fertilizer particles and preparation method thereof |
| CN106518340A (en) * | 2016-10-25 | 2017-03-22 | 潘克稳 | Special fertilizer for pitaya and preparation method therefor |
| CN106588359A (en) * | 2016-12-19 | 2017-04-26 | 山东农业大学 | Animal-oil-based polyurethane coated controlled-release fertilizer and preparation method thereof |
| CN106977287A (en) * | 2017-04-14 | 2017-07-25 | 杨靖民 | Release and release control fertilizer coated fertilizer and its preparation method and application |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114031470A (en) * | 2021-12-14 | 2022-02-11 | 新洋丰农业科技股份有限公司 | Preparation method of alkyd resin controlled-release fertilizer |
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