CN102584474A - Multi-nutrient element soil microorganism controlled release high molecular sulfur fertilizer and preparation method thereof - Google Patents
Multi-nutrient element soil microorganism controlled release high molecular sulfur fertilizer and preparation method thereof Download PDFInfo
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- CN102584474A CN102584474A CN201210069832XA CN201210069832A CN102584474A CN 102584474 A CN102584474 A CN 102584474A CN 201210069832X A CN201210069832X A CN 201210069832XA CN 201210069832 A CN201210069832 A CN 201210069832A CN 102584474 A CN102584474 A CN 102584474A
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Abstract
The invention discloses a multi-nutrient element soil microorganism controlled release high molecular sulfur fertilizer and a preparation method of the fertilizer, relating to slow controlled release chemical fertilizers. The modified sulfur fertilizer is a compound with the following formula: in the formula, m is 3 to 5 and n is 50-200. The preparation method of the fertilizer comprises the following steps: heating urea, sulfourea and formaldehyde to be 78-82 DEG C according to a ratio of 3 to 1 to 5, and reacting for 25-35 min to prepare a component A; heating urea, potassium dihydrogen phosphate and phosphoric acid to be 125-135 DEG C according to a ratio of 4 to (1-2) to (0.8-2), and reacting for 45-55 min to prepare a component B; mixing the components A and B under a stirring action while the components A and B are hot, heating to be 95-105 DEG C, reacting for 80-100 min, and feeding into a pelletizing machine for pelletizing, then obtaining the fertilizer. The preparation method is simple; the sulfur element is existent in a form of C=S double bond, so that the utilization rate is high; the nitrogen, phosphorus, potassium and sulfur elements are connected on a high molecular main chain by chemical bonds, so that the leaching loss is reduced; and the fertilizer is a novel chemical fertilizer which meets the green and environment-friendly requirements.
Description
Technical field
The present invention relates to sustained and controlled release chemical fertilizer, be specially a kind of multi-nutrient element soil microorganisms controlled release high molecular sulfur fertilizer and preparation method thereof.
Background technology
In plant growing process, the absorbed dose of element sulphur is the 4th kind of element that is only second to outside nitrogen, phosphorus, the potassium three big mineral elements.A series of up-to-date test-results show that sulfur-containing fertilizer not only can promote raising the output, the quality of improving the soil, healthy, the raising quality of agricultural product of protective plant, but also can improve the utilization ratio of other nutritive elements.Existing sulfur-containing fertilizer commonly used has ammonium sulfate, vitriolate of tartar, sulphate of potash magnesia, general calcium etc.But the utilization ratio of element sulphur is not high in these sulfur-containing fertilizers.
Because sulphur is cheap and easy to get, therefore select for use sulphur to process a lot, wherein general with sulfur-coated urea again of slow-release fertilizer in the world as coating material.As far back as 1961 U.S. TVA (Tenensee Valley Authority) at first succeed in developing sulfur-coated urea, and set up 1 ~ 3 t/h in 1972 and expanded trial assembly and put, Japan adopted U.S. TVA technology to set up SCU factory in 1977.
To the defective that the coating of sulfur-coated urea particle surface comes off easily, nineteen ninety U.S. Scotts company coats sealing agent and amendment again in the sulfur-coated urea outside, has obtained surperficial sulfur-coated urea Paint Gloss.What its sealing agent was commonly used is paraffin+coal tar or Vilaterm+heavy oil; What amendment was commonly used is zeyssatite or talcum powder.The amendment effect is the unnecessary sealing agent of absorption, thereby can make the surface Paint Gloss, and still, after this handled, sealing agent and amendment all can not can be polluted to soil by plant absorbing.
Summary of the invention
The purpose of this invention is to provide a kind of multi-nutrient element soil microorganisms controlled release high molecular sulfur fertilizer and preparation method thereof.
The present invention realizes through following technical scheme:
A kind of multi-nutrient element soil microorganisms controlled release high molecular sulfur fertilizer, wherein nitrogen, phosphorus, potassium, four kinds of nutritive elements of sulphur are incorporated on the macromolecular chain, have following general formula:
In the formula: m=3～5, n=50～200.
The content of the contained nitrogen of above-mentioned multi-nutrient element soil microorganisms controlled release high molecular sulfur fertilizer, phosphorus, potassium, element sulphur is counted with the quality percentage composition: nitrogen 31.3wt%～32.9wt%, and with P
2O
5Phosphorus 10.4wt%～the 13.2wt% of meter is with K
2Potassium 6.9wt%～the 8.8wt% of O meter, sulphur 4.7wt%～6.0wt%.
Further, the content of the contained nitrogen of above-mentioned multi-nutrient element soil microorganisms controlled release high molecular sulfur fertilizer, phosphorus, potassium, element sulphur is counted with the quality percentage composition: when m=3, during n=200, nitrogen is 31.3wt%, with P
2O
5The phosphorus of % meter is 13.2wt%, with K
2The potassium of O meter is 8.8wt%, and sulphur 6.0wt%, molecular-weight average are 107200; Work as m=4, during n=100, nitrogen is 32.2wt%, with P
2O
5The phosphorus of % meter is 11.7wt%, with K
2The potassium of O meter is 7.7wt%, and sulphur content is 5.3wt%, and molecular-weight average is 60800; Work as m=5, during n=50, nitrogen content is 32.9wt%, with P
2O
5The phosphorus of % meter is 10.4wt%, with K
2The potassium of O meter is 6.9wt%, and sulphur content is 4.7wt%, and molecular-weight average is 34000.
The preparation method of above-mentioned multi-nutrient element soil microorganisms controlled release high molecular sulfur fertilizer may further comprise the steps:
(1) in first reaction vessel, adding mol ratio is urea, thiocarbamide and the formaldehyde of 3:1:5, is heated to 78～82 ℃, and reaction 25～35min makes the A component;
(2) in second reaction vessel, adding mol ratio is urea, potassium primary phosphate and the phosphoric acid of 4:1～2:0.8～2, is heated to 125～135 ℃, and reaction 45～55min makes the B component;
(3) be that A, B two components of 9:5.8～8 are under agitation mixed with mol ratio while hot, be heated to 95～105 ℃, reaction 80～100min sends into the tablets press granulation, promptly gets.
The present invention compares with existing sulfur-coated urea, has the meliority that is described below:
(1) element sulphur in the multi-nutrient element soil microorganisms controlled release high molecular sulfur fertilizer is not that form with simple substance exists; But exist with the form of the two keys of C=S; The element sulphur that is in this chemical state changes Gelucystine or halfcystine more easily into and is absorbed in growing process; Become the indispensable protein component of plant organism, therefore, the utilization ratio of element sulphur is higher;
(2) the four kinds of nutritive elements of nitrogen, phosphorus, potassium, sulphur in the multi-nutrient element soil microorganisms controlled release high molecular sulfur fertilizer molecule are connected on the high polymer main chain through chemical bond securely; Thereby them have been given with slow-releasing; Reduce leaching loss, thereby can increase substantially the utilization ratio of chemical fertilizer;
(3) after multi-nutrient element soil microorganisms controlled release high molecular sulfur fertilizer is manured into soil; Progressively hydrolysis under the effect of soil microorganisms, be degraded to the small molecules nutritive substance; Constantly by plant absorbing; Neither can produce and burn the seedling phenomenon, also can not stay unabsorbable objectionable impurities to soil, be a kind of new type chemical fertilizer that meets environment protection requirement.
Embodiment
Embodiment 1
Multi-nutrient element soil microorganisms controlled release high molecular sulfur fertilizer, wherein nitrogen, phosphorus, potassium, four kinds of nutritive elements of sulphur are incorporated on the macromolecular chain, have following general formula:
In the formula: m=3 ~ 5, n=50 ~ 200.
When m=3, during n=200, nitrogen is 31.3wt%, with P
2O
5The phosphorus of % meter is 13.2wt%, with K
2The potassium of O meter is 8.8wt%, and sulphur 6.0wt%, molecular-weight average are 107200; Work as m=4, during n=100, nitrogen is 32.2wt%, with P
2O
5The phosphorus of % meter is 11.7wt%, with K
2The potassium of O meter is 7.7wt%, and sulphur content is 5.3wt%, and molecular-weight average is 60800; Work as m=5, during n=50, nitrogen content is 32.9wt%, with P
2O
5The phosphorus of % meter is 10.4wt%, with K
2The potassium of O meter is 6.9wt%, and sulphur content is 4.7wt%, and molecular-weight average is 34000.
May further comprise the steps during the preparation method:
(1) in reaction vessel, add 0.3mol urea, 0.1mol thiocarbamide and 0.5mol formaldehyde, under 80 ℃ of conditions, react 30min, make the A component, subsequent use;
(2) in reaction vessel, add 0.4mol urea, 0.1mol potassium primary phosphate and 0.1mol phosphoric acid, be heated to 130 ℃, reaction 50min makes the B component;
(3) the B component is joined in the reactor drum of A component, react 1.5h down, make final product multi-nutrient element soil microorganisms controlled release high molecular sulfur fertilizer at 100 ℃.
Gained multi-nutrient element soil microorganisms controlled release high molecular sulfur fertilizer cold water solubility is 25%, and hot water dissolving's degree is 65%.
Embodiment 2
The preparation method of multi-nutrient element soil microorganisms controlled release high molecular sulfur fertilizer may further comprise the steps:
(1) in reaction vessel, add 0.3mol urea, 0.1mol thiocarbamide and 0.5mol formaldehyde, under 78 ℃ of conditions, react 35min, make the A component, subsequent use;
(2) in reaction vessel, add 0.4mol urea, 0.2mol potassium primary phosphate and 0.1mol phosphoric acid, be heated to 135 ℃, reaction 45min makes the B component;
(3) the B component is joined in the reactor drum of A component, react 100min down, make final product multi-nutrient element soil microorganisms controlled release high molecular sulfur fertilizer at 95 ℃.
Gained high molecular slow-release sulfur fertilizer cold water solubility is 25%, and hot water dissolving's degree is 55%.
Embodiment 3
The preparation method of multi-nutrient element soil microorganisms controlled release high molecular sulfur fertilizer may further comprise the steps:
(1) in reaction vessel, add 0.3mol urea, 0.1mol thiocarbamide and 0.5mol formaldehyde, under 82 ℃ of conditions, react 25min, make the A component, subsequent use;
(2) in reaction vessel, add 0.4mol urea, 0.2mol potassium primary phosphate and 0.2mol phosphoric acid, be heated to 125 ℃, reaction 55min makes the B component;
(3) the B component is joined in the reactor drum of A component, react 80min down, make final product multi-nutrient element soil microorganisms controlled release high molecular sulfur fertilizer at 105 ℃.
Gained multi-nutrient element soil microorganisms controlled release high molecular sulfur fertilizer cold water solubility is 30%, and hot water dissolving's degree is 60%.
Embodiment 4
The preparation method of multi-nutrient element soil microorganisms controlled release high molecular sulfur fertilizer may further comprise the steps:
(1) in reaction vessel, add 0.3mol urea, 0.1mol thiocarbamide and 0.5mol formaldehyde, under 82 ℃ of conditions, react 25min, make the A component, subsequent use;
(2) in reaction vessel, add 0.4mol urea, 0.12mol potassium primary phosphate and 0.08mol phosphoric acid, be heated to 125 ℃, reaction 55min makes the B component;
(3) the B component is joined in the reactor drum of A component, react 80min down, make final product multi-nutrient element soil microorganisms controlled release high molecular sulfur fertilizer at 105 ℃.
Gained multi-nutrient element soil microorganisms controlled release high molecular sulfur fertilizer cold water solubility is 33%, and hot water dissolving's degree is 66%.
Embodiment 5
The preparation method of multi-nutrient element soil microorganisms controlled release high molecular sulfur fertilizer may further comprise the steps:
(1) in reaction vessel, add 0.3mol urea, 0.1mol thiocarbamide and 0.5mol formaldehyde, under 80 ℃ of conditions, react 30min, make the A component, subsequent use;
(2) in reaction vessel, add 0.4mol urea, 0.1mol potassium primary phosphate and 0.08mol phosphoric acid, be heated to 130 ℃, reaction 50min makes the B component;
(3) the B component is joined in the reactor drum of A component, react 90min down, make final product multi-nutrient element soil microorganisms controlled release high molecular sulfur fertilizer at 100 ℃.
Gained multi-nutrient element soil microorganisms controlled release high molecular sulfur fertilizer cold water solubility is 28%, and hot water dissolving's degree is 63%.
Claims (6)
1. multi-nutrient element soil microorganisms controlled release high molecular sulfur fertilizer is characterized in that nitrogen, phosphorus, potassium, four kinds of nutritive elements of sulphur on same macromolecular chain, have following general formula:
In the formula: m=3～5, n=50～200.
2. a kind of multi-nutrient element soil microorganisms controlled release high molecular sulfur fertilizer according to claim 1, it is characterized in that the content of nitrogenous, phosphorus, potassium, element sulphur count with the quality percentage composition: nitrogen 31.3wt%～32.9wt%, with P
2O
5Phosphorus 10.4wt%～the 13.2wt% of meter is with K
2Potassium 6.9wt%～the 8.8wt% of O meter, sulphur 4.7wt%～6.0wt%.
3. a kind of multi-nutrient element soil microorganisms controlled release high molecular sulfur fertilizer according to claim 1 and 2 is characterized in that nitrogen is 31.3wt%, with P when m=3, n=200
2O
5The phosphorus of % meter is 13.2wt%, with K
2The potassium of O meter is 8.8wt%, and sulphur 6.0wt%, molecular-weight average are 107200.
4. a kind of multi-nutrient element soil microorganisms controlled release high molecular sulfur fertilizer according to claim 1 and 2 is characterized in that nitrogen is 32.2wt%, with P when m=4, n=100
2O
5The phosphorus of % meter is 11.7wt%, with K
2The potassium of O meter is 7.7wt%, and sulphur content is 5.3wt%, and molecular-weight average is 60800.
5. a kind of multi-nutrient element soil microorganisms controlled release high molecular sulfur fertilizer according to claim 1 and 2 is characterized in that nitrogen content is 32.9wt%, with P when m=5, n=50
2O
5The phosphorus of % meter is 10.4wt%, with K
2The potassium of O meter is 6.9wt%, and sulphur content is 4.7wt%, and molecular-weight average is 34000.
6. the preparation method of the described multi-nutrient element soil microorganisms of claim 1 controlled release high molecular sulfur fertilizer is characterized in that may further comprise the steps:
(1) in first reaction vessel, adding mol ratio is urea, thiocarbamide and the formaldehyde of 3:1:5, is heated to 78～82 ℃, and reaction 25～35min makes the A component;
(2) in second reaction vessel, adding mol ratio is urea, potassium primary phosphate and the phosphoric acid of 4:1～2:0.8～2, is heated to 125～135 ℃, and reaction 45～55min makes the B component;
(3) be that A, B two components of 9:5.8～8 are under agitation mixed with mol ratio while hot, be heated to 95～105 ℃, reaction 80～100min sends into the tablets press granulation, promptly gets.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103848682A (en) * | 2014-02-20 | 2014-06-11 | 中北大学 | Multi-nutrition macromolecular controlled release sulfur fertilizer and preparation method thereof |
| CN104557288A (en) * | 2014-12-26 | 2015-04-29 | 中北大学 | Organic macromolecular controlled-release nitrogen-phosphorus fertilizer containing Fe, Mn and Cu and preparation method for fertilizer |
| CN104558465A (en) * | 2015-01-21 | 2015-04-29 | 中北大学 | Organic polymer slow-controlled release nitrogen and phosphorus fertilizer containing sulphur, iron, manganese, copper and zinc elements and preparation method of organic polymer slow-controlled release nitrogen and phosphorus fertilizer |
| CN104557290A (en) * | 2014-12-26 | 2015-04-29 | 中北大学 | Organic macromolecular controlled-release nitrogen-phosphorus fertilizer containing S, Fe, Mn and Cu and preparation method for fertilizer |
| CN104557317A (en) * | 2015-01-21 | 2015-04-29 | 中北大学 | Organic polymer slow-controlled release nitrogen and phosphorus fertilizer containing iron, manganese, copper and zinc microelements and preparation method of organic polymer slow-controlled release nitrogen and phosphorus fertilizer |
| CN110256144A (en) * | 2019-06-19 | 2019-09-20 | 中北大学 | Biodegradable high molecular containing various nutrient elements delays the preparation of controlled release organic nano fertilizer |
-
2012
- 2012-03-16 CN CN201210069832XA patent/CN102584474A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103848682A (en) * | 2014-02-20 | 2014-06-11 | 中北大学 | Multi-nutrition macromolecular controlled release sulfur fertilizer and preparation method thereof |
| US9051222B1 (en) * | 2014-02-20 | 2015-06-09 | North University Of China | Slow and controlled release polymeric sulfur fertilizer containing multiple nutrient elements and method for preparing the same |
| CN104557288A (en) * | 2014-12-26 | 2015-04-29 | 中北大学 | Organic macromolecular controlled-release nitrogen-phosphorus fertilizer containing Fe, Mn and Cu and preparation method for fertilizer |
| CN104557290A (en) * | 2014-12-26 | 2015-04-29 | 中北大学 | Organic macromolecular controlled-release nitrogen-phosphorus fertilizer containing S, Fe, Mn and Cu and preparation method for fertilizer |
| CN104558465A (en) * | 2015-01-21 | 2015-04-29 | 中北大学 | Organic polymer slow-controlled release nitrogen and phosphorus fertilizer containing sulphur, iron, manganese, copper and zinc elements and preparation method of organic polymer slow-controlled release nitrogen and phosphorus fertilizer |
| CN104557317A (en) * | 2015-01-21 | 2015-04-29 | 中北大学 | Organic polymer slow-controlled release nitrogen and phosphorus fertilizer containing iron, manganese, copper and zinc microelements and preparation method of organic polymer slow-controlled release nitrogen and phosphorus fertilizer |
| CN110256144A (en) * | 2019-06-19 | 2019-09-20 | 中北大学 | Biodegradable high molecular containing various nutrient elements delays the preparation of controlled release organic nano fertilizer |
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Application publication date: 20120718 |