CN106495928A - A kind of modified rice straw prepares the preparation method of release-controlled coated urea - Google Patents
A kind of modified rice straw prepares the preparation method of release-controlled coated urea Download PDFInfo
- Publication number
- CN106495928A CN106495928A CN201611104525.5A CN201611104525A CN106495928A CN 106495928 A CN106495928 A CN 106495928A CN 201611104525 A CN201611104525 A CN 201611104525A CN 106495928 A CN106495928 A CN 106495928A
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- China
- Prior art keywords
- rice straw
- release
- modified rice
- urea
- preparation
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
-
- 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
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
-
- 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
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
- C05G5/12—Granules or flakes
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pest Control & Pesticides (AREA)
- Soil Sciences (AREA)
- Fertilizers (AREA)
Abstract
The present invention relates to a kind of modified rice straw prepares the preparation method of release-controlled coated urea, it is characterised in that comprise the following steps：Common rice straw is first cut into scissors the segment of 1cm or so, 3h in baking oven is put into, is then crushed with pulverizer, then rice straw powder therein is taken with the screen cloth sieve in aperture 0.25,0.15.0.75mm respectively, be put into standby in bag；The method of the invention prepare reduction release-controlled coated fertilizer production cost, stalk coated fertilizer itself can also improved soil structure, improve beneficial microorganism be distributed, for the comprehensive utilization of waste resource serves good popularization reference.
Description
Technical field
The present invention relates to a kind of modified rice straw prepares the preparation method of release-controlled coated urea.
Background technology
China is Rice Production big country, and south is main Rice Production ground, with the volume increase of rice yield.Rice straw yield
Also increasing, annual generation rice straw about 1900000000, current China's straw utilization rate are about 33%, are mainly used in stalk
The production of also field, feed and bioenergy, and the random stacking even open incineration of remaining a large amount of stalks causes serious air
Pollution.Easily cause rural fire and affect the safe operation of highway and civil aviaton.Therefore, necessary exploration has potential
Economic benefit and method free from environmental pollution process agricultural crop straw.
Meanwhile, China is the first in the world large chemical fertilizer production and consumption state.Due to being easily used to brokenly in a large number for common chemical fertilizer
The structure of bad soil itself, so countries in the world are all in research sustained-release and controlled release fertilizer of trying to be the first.This is that one kind can improve fertilizer utilization
The high-efficiency environment friendly new-type fertilizer of rate.But as production cost is higher, the reason such as actual land for growing field crops effect is bad limits which promotes should
With.Therefore the discarded rice straw of this research and utilization, improves its oil absorbency by chemical modification to prepare the release-controlled coated urine of environment-friendly novel
Plain corner, and its actual effect is tested by land for growing field crops pot experiment.So can not only reduce the production cost of release-controlled coated fertilizer,
Stalk coated fertilizer itself can also improved soil structure.Beneficial microorganism distribution is improved, for the comprehensive profit of waste resource
With serving good popularization reference.
Content of the invention
The present invention proposes the preparation method that a kind of modified rice straw prepares release-controlled coated urea.
A kind of modified rice straw prepares the preparation method of release-controlled coated urea, comprises the following steps：
（1）Common rice straw is first cut into scissors the segment of 1cm or so, 3h in baking oven is put into, and then powder is carried out with pulverizer
Broken, then rice straw powder therein is taken with the screen cloth sieve in aperture 0.25,0.15.0.75mm respectively, it is put into standby in bag；
（2）Weigh a certain amount of above-mentioned pretreatment rice straw powder 1g, acetic anhydride AA1.5g, dimethylformamide DMF30mL, 4 one two
Methylamino pyridine 0.3g, reacts 1-6h under conditions of temperature is for 100 DEG C, after the completion of reaction, takes out round-bottomed flask, is rinsed with water
Its outer wall, is cooled to room temperature, reuses bottle,suction suction filtration, with alcohol flushing, to be rinsed completely after, reacted rice straw is poured into
Dry culture dish is simultaneously placed in 60 DEG C of thermostatic drying chambers sealing preserve after dry 8～10h；
（3）Using the principle of granulating disc, granular urea is being added at the uniform velocity and in adjustable open coating machine, first by formula
The soy bean oil of the mixed curing agent for accounting for urea total amount about 0.3% is added, now rotating speed suitably can be tuned up；
（4）After full and uniform coating, 15% or so modified rice straw powder is sprinkled：After about 15min, urea total amount is added about
0.2% above-mentioned mixed solvent, after being uniformly dispersed, sprinkles the modified rice straw powder of 5-25% or so, to be wrapped tight and light occur
During sliding surface, obtain final product after continuing to repeat said process 2～3 times.
Preferably, the step（2）Reaction time be 2h.
Preferably, the step（4）The consumption of modified rice straw powder is 15%.
Prepared by the method for the invention reduces the production cost of release-controlled coated fertilizer, and stalk coated fertilizer itself can also change
Good soil texture, improves beneficial microorganism distribution, uses for reference meaning for the comprehensive utilization of waste resource serves good popularization
Justice.
Specific embodiment
Embodiment 1.
A kind of modified rice straw prepares the preparation method of release-controlled coated urea, comprises the following steps：
（1）Common rice straw is first cut into scissors the segment of 1cm or so, 3h in baking oven is put into, and then powder is carried out with pulverizer
Broken, then rice straw powder therein is taken with the screen cloth sieve in aperture 0.25,0.15.0.75mm respectively, it is put into standby in bag；
（2）Weigh a certain amount of above-mentioned pretreatment rice straw powder 1g, acetic anhydride AA1.5g, dimethylformamide DMF30mL, 4 one two
Methylamino pyridine 0.3g, reacts 1-6h under conditions of temperature is for 100 DEG C, after the completion of reaction, takes out round-bottomed flask, is rinsed with water
Its outer wall, is cooled to room temperature, reuses bottle,suction suction filtration, with alcohol flushing, to be rinsed completely after, reacted rice straw is poured into
Dry culture dish is simultaneously placed in 60 DEG C of thermostatic drying chambers sealing preserve after dry 8～10h；
（3）Using the principle of granulating disc, granular urea is being added at the uniform velocity and in adjustable open coating machine, first by formula
The soy bean oil of the mixed curing agent for accounting for urea total amount about 0.3% is added, now rotating speed suitably can be tuned up；
（4）After full and uniform coating, 15% or so modified rice straw powder is sprinkled：After about 15min, urea total amount is added about
0.2% above-mentioned mixed solvent, after being uniformly dispersed, sprinkles the modified rice straw powder of 5-25% or so, to be wrapped tight and light occur
During sliding surface, obtain final product after continuing to repeat said process 2～3 times；
（5）The step（2）Reaction time be 2h.
Embodiment 2.
A kind of modified rice straw prepares the preparation method of release-controlled coated urea, comprises the following steps：
（1）Common rice straw is first cut into scissors the segment of 1cm or so, 3h in baking oven is put into, and then powder is carried out with pulverizer
Broken, then rice straw powder therein is taken with the screen cloth sieve in aperture 0.25,0.15.0.75mm respectively, it is put into standby in bag；
（2）Weigh a certain amount of above-mentioned pretreatment rice straw powder 1g, acetic anhydride AA1.5g, dimethylformamide DMF30mL, 4 one two
Methylamino pyridine 0.3g, reacts 1-6h under conditions of temperature is for 100 DEG C, after the completion of reaction, takes out round-bottomed flask, is rinsed with water
Its outer wall, is cooled to room temperature, reuses bottle,suction suction filtration, with alcohol flushing, to be rinsed completely after, reacted rice straw is poured into
Dry culture dish is simultaneously placed in 60 DEG C of thermostatic drying chambers sealing preserve after dry 8～10h；
（3）Using the principle of granulating disc, granular urea is being added at the uniform velocity and in adjustable open coating machine, first by formula
The soy bean oil of the mixed curing agent for accounting for urea total amount about 0.3% is added, now rotating speed suitably can be tuned up；
（4）After full and uniform coating, 15% or so modified rice straw powder is sprinkled：After about 15min, urea total amount is added about
0.2% above-mentioned mixed solvent, after being uniformly dispersed, sprinkles the modified rice straw powder of 5-25% or so, to be wrapped tight and light occur
During sliding surface, obtain final product after continuing to repeat said process 2～3 times；
（5）The step（4）The consumption of modified rice straw powder is 15%.
Claims (3)
1. a kind of modified rice straw prepares the preparation method of release-controlled coated urea, it is characterised in that comprise the following steps：
（1）Common rice straw is first cut into scissors the segment of 1cm or so, 3h in baking oven is put into, and then powder is carried out with pulverizer
Broken, then rice straw powder therein is taken with the screen cloth sieve in aperture 0.25,0.15.0.75mm respectively, it is put into standby in bag；
（2）Weigh a certain amount of above-mentioned pretreatment rice straw powder 1g, acetic anhydride AA1.5g, dimethylformamide DMF30mL, 4 one two
Methylamino pyridine 0.3g, reacts 1-6h under conditions of temperature is for 100 DEG C, after the completion of reaction, takes out round-bottomed flask, is rinsed with water
Its outer wall, is cooled to room temperature, reuses bottle,suction suction filtration, with alcohol flushing, to be rinsed completely after, reacted rice straw is poured into
Dry culture dish is simultaneously placed in 60 DEG C of thermostatic drying chambers sealing preserve after dry 8～10h；
（3）Using the principle of granulating disc, granular urea is being added at the uniform velocity and in adjustable open coating machine, first by formula
The soy bean oil of the mixed curing agent for accounting for urea total amount about 0.3% is added, now rotating speed suitably can be tuned up；
（4）After full and uniform coating, 15% or so modified rice straw powder is sprinkled：After about 15min, urea total amount is added about
0.2% above-mentioned mixed solvent, after being uniformly dispersed, sprinkles the modified rice straw powder of 5-25% or so, to be wrapped tight and light occur
During sliding surface, obtain final product after continuing to repeat said process 2～3 times.
2. the modified rice straw of kind as claimed in claim 1 prepares the preparation method of release-controlled coated urea, it is characterised in that：The step
（2）Reaction time be 2h.
3. the modified rice straw of kind as claimed in claim 1 prepares the preparation method of release-controlled coated urea, it is characterised in that：The step
（4）The consumption of modified rice straw powder is 15%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611104525.5A CN106495928A (en) | 2016-12-05 | 2016-12-05 | A kind of modified rice straw prepares the preparation method of release-controlled coated urea |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611104525.5A CN106495928A (en) | 2016-12-05 | 2016-12-05 | A kind of modified rice straw prepares the preparation method of release-controlled coated urea |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106495928A true CN106495928A (en) | 2017-03-15 |
Family
ID=58330429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611104525.5A Pending CN106495928A (en) | 2016-12-05 | 2016-12-05 | A kind of modified rice straw prepares the preparation method of release-controlled coated urea |
Country Status (1)
| Country | Link |
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| CN (1) | CN106495928A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110256146A (en) * | 2019-06-24 | 2019-09-20 | 中国农业科学院农业资源与农业区划研究所 | A kind of slow-releasing granules compound fertilizer and preparation method thereof of stalk film forming |
-
2016
- 2016-12-05 CN CN201611104525.5A patent/CN106495928A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110256146A (en) * | 2019-06-24 | 2019-09-20 | 中国农业科学院农业资源与农业区划研究所 | A kind of slow-releasing granules compound fertilizer and preparation method thereof of stalk film forming |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170315 |
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| WD01 | Invention patent application deemed withdrawn after publication |