CN102241547B - Preparation method of urea melt absorption-release synchronous nitrogen fertilizer - Google Patents
Preparation method of urea melt absorption-release synchronous nitrogen fertilizer Download PDFInfo
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- CN102241547B CN102241547B CN201110111899.0A CN201110111899A CN102241547B CN 102241547 B CN102241547 B CN 102241547B CN 201110111899 A CN201110111899 A CN 201110111899A CN 102241547 B CN102241547 B CN 102241547B
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Abstract
The invention provides a preparation method of a urea melt absorption-release synchronous nitrogen fertilizer. The method comprises the following steps: formaldehyde and urea are used to melt, a flowmeter is used for metering, then a high pressure sprayer is used to spray the molten urea solution into a drum granulator and perform liquid drum granulation on the preheated and ground quick-acting nitrogen fertilizer and solid control agent, and the absorption-release synchronous nitrogen fertilizer is formed after drying, cooling and screening. By adopting the fertilizer, the nitrogen release rate is basically synchronous to the nitrogen absorption rate in each stage of the whole growing process of the crop, the utilization rate is up to 65%-80%, more than 90% of nitrogen which is not absorbed can not be lost, the soil environment can be protected and the biochemical characters of soil environments and soil can be protected; and the fertilizer has the function of preserving nutrient and water. The technology of the invention is easy to improve and convenient to operate.
Description
Technical field
The present invention relates to a kind of suction and release the preparation method of synchronous nitrogen fertilizer, belong to technical field of fertilizers.
Background technology
The nitrogenous fertilizer of domestic production is at present mainly ammonium chloride, urea, carbon ammonium and sulphur ammonium, and these utilization rate of nitrogen fertilizer are low, and loss is large, not that release rate is fast in earlier stage, be exactly that later stage release rate is fast, can not be by the required supply nitrogen of the interim growth of crop, and also there will be a large amount of losses.And inhale, to release synchronous nitrogen fertilizer be according to surveying the requirement production of filling a prescription to nitrogen of soil formula and Different Crop, and can meet the demand of each stage of plant growth whole process to nitrogen, reaching nitrogen supplies with and Crop basic synchronization, this season utilization ratio reaches 65%-80%, and unemployed nitrogen glues together solid controlling in soil lattice body by nano level wilkinite and inorganic throw out-polymerize aluminum chloride, greatly reduce the loss of fertilizer, thereby greatly reduced because agriculture production fertilising is to soil, the three-dimensional pollution of area source of water body and atmosphere, there is science, energy-conservation, abridged edition, the significance of the aspects such as environmental protection.
Summary of the invention
The object of the present invention is to provide a kind of molten preparation method who releases synchronous nitrogen fertilizer that inhales that urinates, synchronous nitrogen fertilizer is released in gained suction can balance supply with required nitrogen of each stage of plant growth, can control the loss that is not absorbed nitrogen simultaneously.
The present invention adopts following technical scheme to achieve these goals:
Urinate the molten preparation method who releases synchronous nitrogen fertilizer that inhales, it is characterized in that comprising the following steps:
(1) instant nitrogenousfertilizer, the agent of powdery solid controlling enter the stirring of mix and blend dish by weight through electronic scales, chapelet respectively, by tape transport, to high speed disintegrator, pulverize, more than mixture order number reaches 200 orders, then be transported in the rotary drum granulator of steam preheating;
(2) urea formadehyde is poured into material feeding machine, through chapelet, rise to buffer bin, enter urea melting device, after urea formadehyde melting, flow into urea liquid snubber, through high-pressure spray gun, urea liquid is sprayed onto in instant nitrogenousfertilizer in the rotary drum granulator of steam preheating mixing raw material, powdery solid controlling agent composition material and carries out liquid phase drum granulating, then dry, cooling, screening, by tape transport, to finished bin, pack warehouse-in;
The weight ratio of described urea formadehyde solution, instant nitrogenousfertilizer, wilkinite, polymerize aluminum chloride is 70-260: 700-800: 50-100: 5-15;
Described powdery solid controlling agent is wilkinite, polymerize aluminum chloride.
Described a kind of urine melted the preparation method that synchronous nitrogen fertilizer is released in suction, it is characterized in that described instant nitrogenousfertilizer is ammonium chloride.
Beneficial effect of the present invention:
(1) production technique of the present invention is simple, as long as original drum granulating production equipment and technique are carried out to simple transformation.
(2) starting material obtain easily, the nitrogenous fertilizer that production cost is not produced higher than routine, and the equivalence property supplied with is far above above-mentioned two kinds of fertilizer.
(3) this product is 1/2 of equivalent nitrogen fertilizer amount, greatly reduce the consumption to resource and the energy, and can meet required nitrogen intelligent synchronization supply of each stage of plant growth whole process (early, middle, late stage), can not allow plant growth occur interim de-fertile, nitrogen utilization efficiency is up to 65%-80%.
(4) to use cost low for this product, applied once, and other conventional nitrogenous fertilizer also will repeatedly be used and benefit is executed in the early, middle, late stage of plant growth, otherwise plant growth there will be interim de-fertile phenomenon, uses this product and can greatly reduce the cost of labor of using.
(5) production technique of the inventive method can improve melt liquid zero pour, balling ratio, reduce production cost, reduce nitrogen loss.Available nutrient and long-acting nutrient proportioning science, moisture content are low, prevented from caking, are convenient to mechanization production.
(6) utilization rate of fertilizer of this product reaches 65%-80%; other be not absorbed nitrogen by solid controlling agent nano level mineral substance-wilkinite and inorganic throw out-polymerize aluminum chloride by solid controlling in soil lattice body; substantially reach and do not run off, the effect of protection water and soil and atmospheric environment.
(7) products obtained therefrom environmental protection of the present invention, long-term application can improve soil physico-chemical characteristic, and the interior environment of microorganism growth in soil protection improves soil fertilizer soil moisture conservation.
Accompanying drawing explanation
Fig. 1 is the process flow sheet of the inventive method.
Embodiment
Below in conjunction with example and accompanying drawing to invention process explanation, the molten preparation method who releases synchronous nitrogen fertilizer that inhales of urine, concrete technology operation steps is as follows:
(1) pour urea formadehyde into receiving opening, by bucket elevator, mention feed bin, then be transported to urea formadehyde melting device; molten urea solution flows to dashpot; by under meter, measure, by high-pressure spray gun, be sprayed onto on the material in rotary drum granulator that preheating crushes, urea formadehyde is 100 weight parts.
(2) instant nitrogenousfertilizer and stopping composition (solid controlling agent)-wilkinite and polymerize aluminum chloride measure respectively, and bucket is transported in pulverizer after mentioning agitator disk, then are transported to rotary drum granulator and carry out granulation.Instant nitrogenousfertilizer (ammonium chloride) 800 weight parts, wilkinite 100 weight parts, polymerize aluminum chloride 5 weight parts.
(3) granulation, cooling, the rear finished product that forms of screening, input stockyard after metering packing.
Claims (1)
1. a preparation method for synchronous nitrogen fertilizer is released in the molten suction of urine, it is characterized in that comprising the following steps:
(1) instant nitrogenousfertilizer, the agent of powdery solid controlling enter the stirring of mix and blend dish by weight through electronic scales, chapelet respectively, by tape transport, to high speed disintegrator, pulverize, more than mixture order number reaches 200 orders, then be transported in the rotary drum granulator of steam preheating;
(2) urea formadehyde is poured into material feeding machine, through chapelet, rise to buffer bin, enter urea melting device, after urea formadehyde melting, flow into urea liquid snubber, through high-pressure spray gun, urea liquid is sprayed onto in instant nitrogenousfertilizer in the rotary drum granulator of steam preheating mixing raw material, powdery solid controlling agent composition material and carries out liquid phase drum granulating, then dry, cooling, screening, by tape transport, to finished bin, pack warehouse-in;
Described powdery solid controlling agent is wilkinite, polymerize aluminum chloride; The weight ratio of described urea formadehyde solution, instant nitrogenousfertilizer, wilkinite, polymerize aluminum chloride is 70-260:700-800:50-100:5-15; Described instant nitrogenousfertilizer is ammonium chloride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110111899.0A CN102241547B (en) | 2011-04-29 | 2011-04-29 | Preparation method of urea melt absorption-release synchronous nitrogen fertilizer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110111899.0A CN102241547B (en) | 2011-04-29 | 2011-04-29 | Preparation method of urea melt absorption-release synchronous nitrogen fertilizer |
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| Publication Number | Publication Date |
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| CN102241547A CN102241547A (en) | 2011-11-16 |
| CN102241547B true CN102241547B (en) | 2014-01-15 |
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| CN201110111899.0A Expired - Fee Related CN102241547B (en) | 2011-04-29 | 2011-04-29 | Preparation method of urea melt absorption-release synchronous nitrogen fertilizer |
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| CN103553777B (en) * | 2013-10-25 | 2014-08-27 | 山东农业大学 | Coated controlled-release fertilizer for modifying urea into easily degradable film and production method of coated controlled-release fertilizer |
Citations (4)
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| CN1198425A (en) * | 1998-06-02 | 1998-11-11 | 朱永绥 | Method for producing urea-formaldehyde compound fertilizer |
| CN101165012A (en) * | 2006-10-18 | 2008-04-23 | 汉枫缓释肥料（黑龙江）有限公司 | High tower slow release composite fertilizer containing ureaformaldehyde and producing method thereof |
| CN101209940A (en) * | 2007-12-24 | 2008-07-02 | 中国科学院等离子体物理研究所 | Loss control nitrogenous fertilizer and producing method thereof |
| CN101353278A (en) * | 2007-07-28 | 2009-01-28 | 中国科学院等离子体物理研究所 | Nutrient field planting compound fertilizer and preparation thereof |
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2011
- 2011-04-29 CN CN201110111899.0A patent/CN102241547B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1198425A (en) * | 1998-06-02 | 1998-11-11 | 朱永绥 | Method for producing urea-formaldehyde compound fertilizer |
| CN101165012A (en) * | 2006-10-18 | 2008-04-23 | 汉枫缓释肥料（黑龙江）有限公司 | High tower slow release composite fertilizer containing ureaformaldehyde and producing method thereof |
| CN101353278A (en) * | 2007-07-28 | 2009-01-28 | 中国科学院等离子体物理研究所 | Nutrient field planting compound fertilizer and preparation thereof |
| CN101209940A (en) * | 2007-12-24 | 2008-07-02 | 中国科学院等离子体物理研究所 | Loss control nitrogenous fertilizer and producing method thereof |
Non-Patent Citations (5)
| Title |
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| 刘宝存等.缓控释肥料：理论与实践.《缓控释肥料：理论与实践》.2009,143-148. * |
| 尿素熔融喷浆造粒制复混肥;李兴田等;《硫磷设计与粉体工程》;20041231(第4期);第22页第2.2节，图2 * |
| 李兴田等.尿素熔融喷浆造粒制复混肥.《硫磷设计与粉体工程》.2004,(第4期),21-23. |
| 缓释和控释尿素的研究与开发综述;陈德明等;《化工进展》;20021231;第21卷(第7期);455-461 * |
| 陈德明等.缓释和控释尿素的研究与开发综述.《化工进展》.2002,第21卷(第7期),445-461. |
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