CN101113109A - Long-acting carbamide and preparation method thereof - Google Patents
Long-acting carbamide and preparation method thereof Download PDFInfo
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- CN101113109A CN101113109A CNA2007100120431A CN200710012043A CN101113109A CN 101113109 A CN101113109 A CN 101113109A CN A2007100120431 A CNA2007100120431 A CN A2007100120431A CN 200710012043 A CN200710012043 A CN 200710012043A CN 101113109 A CN101113109 A CN 101113109A
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- urea
- dicyanodiamide
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- arachidis hypogaeae
- pericarppium arachidis
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Abstract
The invention relates to a long-term urea, in which agricultural waste peanut shell is used as a carrier, and a little of hydroquinone, dicyanodiamide and urea are added to prepare the product. The weight percentage contents of each component of the invention are that: peanut 10%-30%, hydroquinone 0.01%-0.1%, dicyanodiamide 0.02%-0.2%, and urea 69.97%-89.97%. The preparation steps are that: (1) activated peanut shell with the size of 0.25mm- 0.5mm and urea are molten and mixed in a certain proportion and fully stirred; (2) hydroquinone and dicyanodiamide are respectively prepared into 10% water solution; (3) the hydroquinone solution and the dicyanodiamide solution prepared by step (2) are sprayed to the middle part of the granulating tower. The most important characteristics of the invention is to employ agricultural waste peanut, which not only has low cost, but also has wide source, and can greatly enhance the utilization factor, prolong the fertilizer effective term or urea, decrease the cost, and is free of earth and environmental pollution, non-poisonous and harmless.
Description
Technical field:
The present invention relates to a kind of urea fertilizer, specifically, be a kind of be the long-acting carbamide and the preparation method of carrier with the agricultural wastes Pericarppium arachidis hypogaeae.
Background technology:
Chemical fertilizer occupies critical role in agriculture production, be material investment maximum in the agriculture production, accounts for 50% of its full scale production expenditure.Because the combined influence of fertilizer character and edatope condition, utilization rate of fertilizer is low to be ubiquitous problem during chemical fertilizer uses.Especially urea be a kind of fertilizer of consumption maximum in China's agriculture production, but its utilization ratio has only 30%～40%, causes the excess fertilising, thereby brings a series of problems such as enormous economic loss, environmental pollution.Therefore, improve chemical fertilizer utilization ratio, reduce the environmental pollution that causes because of fertilising, develop sustainable high-efficiency agriculture and become the common problem of paying close attention in the world.
Because ubiquity ureaclastic urase in the soil, urea enters to decompose under the effect of soil urease behind the soil and discharges ammonium (NH
4 +) ion, and absorbed by crop, but because can not produce the burning seedling and cause more nitrogen volatilization loss and loss by the whole absorptions of crop and to crop seedling immediately, and bring environmental pollution.Therefore a lot of to the research of slow release long-acting chemical fertilizer both at home and abroad.Countries in the world are very fast to the progress of urease inhibitor in recent years, add a certain amount of urease inhibitor such as quinhydrones in urea, and the nitrification inhibitor Dyhard RU 100 etc., obtain certain achievement to alleviating urea decomposition and stoping ammonium nitrogen to be converted into nitric nitrogen.But the attention of most technology all concentrates on and improves fertilizer efficiency, increase fertilizer utilization ratio, has ignored fertilizer is continued to use to improving soil environment quality, improve the soil comprehensive fertility, alleviate soil pollution, the consideration of protection agroecological environment aspect.
Summary of the invention:
The objective of the invention is problem, and provide a kind of raw material sources extensive, can improve the urea utilization ratio, prolong fertilizer efficiency period, reduce cost, the free of contamination long-acting carbamide of edatope at above-mentioned prior art existence.The objective of the invention is to be achieved through the following technical solutions: long-acting carbamide be with the agricultural wastes Pericarppium arachidis hypogaeae as carrier, add a small amount of cyanogen quinone, Dicyanodiamide and urea again.Each components contents (weight %) wherein: Pericarppium arachidis hypogaeae 10%～30%; Cyanogen quinone 0.01%～0.1%; Dicyanodiamide 0.02%～0.2%; Urea 69.97%～89.97%.
Long-acting carbamide is mainly by following three steps preparation:
Step 1: particle diameter according to a certain ratio is that the peanut hull meal of 0.25mm～0.5mm mixes with urea melting liquid and fully stirs evenly, and the temperature range of described urea melting liquid is at 133～135 ℃;
Step 2: cyanogen quinone and Dicyanodiamide be mixed with 10% the aqueous solution respectively;
Step 3: the aqueous solution of the cyanogen quinone that makes and Dicyanodiamide is ejected into the prilling tower middle part.
Above-mentioned raw materials Pericarppium arachidis hypogaeae wide material sources, its surface irregularity, porosity is big, has certain adsorptive power, has the intensive adsorptive power after the activated processing, mixes urea and degradation production NH thereof with urea melting liquid
3 +Ion is attracted in surface and the hole, then by dissolving release gradually, thus the fertilizer efficiency period and the utilization ratio of raising urea.Simultaneously, constituent contents such as nitrogen, phosphorus, potassium, calcium, zinc, magnesium, iron are abundanter in the Pericarppium arachidis hypogaeae, itself just can be used as the fertilizer of plant-growth, therefore select a kind of synergistic agent of agricultural wastes Pericarppium arachidis hypogaeae as urea, i.e. economy environmental protection again for use.
Maximum characteristics of the present invention are to utilize the agricultural wastes Pericarppium arachidis hypogaeae, and not only cost is very low, and raw material sources are extensive, can obviously improve the utilization ratio of urea, prolong the fertilizer efficiency period of urea, reduce cost,, toxicological harmless pollution-free to edatope, high-efficiency environment friendly.
Description of drawings:
Fig. 1 is preparation method's FB(flow block) of the present invention.
Embodiment:
With reference to Fig. 1, Pericarppium arachidis hypogaeae is pulverized in pulverizer, is sieved, particle diameter is 0.25mm～0.5mm, uses 25%～30% phosphoric acid dip 24h then, wash afterwards, dry the activation Pericarppium arachidis hypogaeae.Send into the mixing tank mixing by metering conveyor then, at this moment, urea melting liquid metering Liquid spraying pump sprays in mixing tank, enters the prilling tower granulation behind the spray, promptly gets product after the metering bubbler sprays in prilling tower.Among the figure 1～4 is the priority of step.
Embodiment 1:
Long-acting carbamide, by following raw material by weight % make: cyanogen quinone 0.1%, Dicyanodiamide 0.2%, Pericarppium arachidis hypogaeae 10%; Urea 89.7%.
Embodiment 2:
Long-acting carbamide, by following raw material by weight % make: cyanogen quinone 0.01%, Dicyanodiamide 0.02%, Pericarppium arachidis hypogaeae 10%; Urea 89.97%.
Embodiment 3:
Long-acting carbamide, by following raw material by weight % make: cyanogen quinone 0.05%, Dicyanodiamide 0.1%, Pericarppium arachidis hypogaeae 14.88%; Urea 84.97%.
Embodiment 4:
Long-acting carbamide, by following raw material by weight % make: cyanogen quinone 0.08%, Dicyanodiamide 0.02%, Pericarppium arachidis hypogaeae 19.93%; Urea 79.97%.
Embodiment 5:
Long-acting carbamide, by following raw material by weight % make: cyanogen quinone 0.03%, Dicyanodiamide 0.15%, Pericarppium arachidis hypogaeae 24.85%; Urea 74.97%.
Embodiment 6: long-acting carbamide, by following raw material by weight % make: cyanogen quinone 0.01%, Dicyanodiamide 0.02%, Pericarppium arachidis hypogaeae 30%; Urea 69.97%.
The method for preparing embodiment 1～6 is by following three steps:
Step 1: the activation Pericarppium arachidis hypogaeae of 0.25mm～0.5mm according to a certain ratio mixes fully with urea melting liquid and stirs evenly;
Step 2: cyanogen quinone and Dicyanodiamide be made into 10% the aqueous solution respectively;
Step 3: the cyanogen quinone that step 2 is made and the aqueous solution of Dicyanodiamide are ejected into the prilling tower middle part.The concrete grammar step is undertaken by schema.
Equipment related in the above-mentioned technology all adopts conventional equipment.
Claims (8)
1. long-acting carbamide, it be with the agricultural wastes Pericarppium arachidis hypogaeae as carrier, add a small amount of cyanogen quinone, Dicyanodiamide and urea again, wherein each components contents (weight %): Pericarppium arachidis hypogaeae 10%～30%; Cyanogen quinone 0.01%～0.1%; Dicyanodiamide 0.02%～0.2%; Urea 69.97%～89.97%.
2. a kind of long-acting carbamide as claimed in claim 1, it by following raw material by weight % make: cyanogen quinone 0.1%, Dicyanodiamide 0.2%, Pericarppium arachidis hypogaeae 10%; Urea 89.7%.
3. a kind of long-acting carbamide as claimed in claim 1, it by following raw material by weight % make: cyanogen quinone 0.01%, Dicyanodiamide 0.02%, Pericarppium arachidis hypogaeae 10%; Urea 89.97%.
4. a kind of long-acting carbamide as claimed in claim 1, it by following raw material by weight % make: cyanogen quinone 0.05%, Dicyanodiamide 0.1%, Pericarppium arachidis hypogaeae 14.88%; Urea 84.97%.
5. a kind of long-acting carbamide as claimed in claim 1, it by following raw material by weight % make: cyanogen quinone 0.08%, Dicyanodiamide 0.02%, Pericarppium arachidis hypogaeae 19.93%; Urea 79.97%.
6. a kind of long-acting carbamide as claimed in claim 1, it by following raw material by weight % make: cyanogen quinone 0.03%, Dicyanodiamide 0.15%, Pericarppium arachidis hypogaeae 24.85%; Urea 74.97%.
7. a kind of long-acting carbamide as claimed in claim 1, it by following raw material by weight % make: cyanogen quinone 0.01%, Dicyanodiamide 0.02%, Pericarppium arachidis hypogaeae 30%; Urea 69.97%.
8. preparation is as claim 1 or 2 or 3 or 4 or 5 or 6 or 7 described a kind of long-acting carbamides, and its preparation method is finished by following three steps:
Step 1: the activation Pericarppium arachidis hypogaeae of 0.25mm～0.5mm according to a certain ratio mixes fully with urea melting liquid and stirs evenly;
Step 2: cyanogen quinone and Dicyanodiamide be made into 10% the aqueous solution respectively;
Step 3: the cyanogen quinone that step 2 is made and the aqueous solution of Dicyanodiamide are ejected into the prilling tower middle part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100120431A CN101113109B (en) | 2007-07-11 | 2007-07-11 | Long-acting carbamide and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100120431A CN101113109B (en) | 2007-07-11 | 2007-07-11 | Long-acting carbamide and preparation method thereof |
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| Publication Number | Publication Date |
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| CN101113109A true CN101113109A (en) | 2008-01-30 |
| CN101113109B CN101113109B (en) | 2010-10-06 |
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| CN2007100120431A Expired - Fee Related CN101113109B (en) | 2007-07-11 | 2007-07-11 | Long-acting carbamide and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102491857A (en) * | 2011-12-12 | 2012-06-13 | 新疆慧尔农业科技发展有限公司 | Long-acting slow-release urea and preparation method thereof |
| CN103783291A (en) * | 2014-02-14 | 2014-05-14 | 泰安汉威化工有限公司 | Choline chloride powder taking peanut shell as carrier and preparation method thereof |
| CN107056498A (en) * | 2017-06-03 | 2017-08-18 | 台州市柏棵生物科技有限公司 | A kind of container for plants of release and release control fertilizer and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1279227A (en) * | 1999-06-24 | 2001-01-10 | 陈涣文 | Organic fertilizer |
| CN1410397A (en) * | 2002-12-06 | 2003-04-16 | 赵鹏 | Biological organic and inorganic composite fertilizer and its production method |
-
2007
- 2007-07-11 CN CN2007100120431A patent/CN101113109B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102491857A (en) * | 2011-12-12 | 2012-06-13 | 新疆慧尔农业科技发展有限公司 | Long-acting slow-release urea and preparation method thereof |
| CN103783291A (en) * | 2014-02-14 | 2014-05-14 | 泰安汉威化工有限公司 | Choline chloride powder taking peanut shell as carrier and preparation method thereof |
| CN103783291B (en) * | 2014-02-14 | 2016-04-06 | 泰安汉威化工有限公司 | A kind of take peanut shell as choline chloride powder of carrier and preparation method thereof |
| CN107056498A (en) * | 2017-06-03 | 2017-08-18 | 台州市柏棵生物科技有限公司 | A kind of container for plants of release and release control fertilizer and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN101113109B (en) | 2010-10-06 |
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Granted publication date: 20101006 Termination date: 20130711 |