CN1056860A - Contain compound long-efficiency urea fertilizer of trace element and preparation method thereof - Google Patents
Contain compound long-efficiency urea fertilizer of trace element and preparation method thereof Download PDFInfo
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- CN1056860A CN1056860A CN 90105116 CN90105116A CN1056860A CN 1056860 A CN1056860 A CN 1056860A CN 90105116 CN90105116 CN 90105116 CN 90105116 A CN90105116 A CN 90105116A CN 1056860 A CN1056860 A CN 1056860A
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Abstract
A kind of compound long-efficiency urea fertilizer that contains trace element contains one or more elements in zinc, manganese, molybdenum, copper, boron or the ferro element, adds trace element back long-acting carbamide or content of urea and is no less than 20%.The preparation method of this compound long-efficiency urea fertilizer adopts present industrial production long-acting carbamide or technology of urea, equipment and condition, liquid microelement storage tank and volume pump have been increased, to contain liquid microelement adds before long-acting carbamide or long-acting carbamide granulation, make the compound long-efficiency urea fertilizer that contains trace element, this technology is with existing technology combination, embodiment is simple, is easy to produce compound long-efficiency urea fertilizer of the present invention by existing installation is improved.
Description
The present invention is a kind of compound long-efficiency urea fertilizer and manufacturing process thereof that contains trace element.
Urea fertilizer is a kind of solid nitrogenous fertilizer that occupies critical role in the current agricultural, and because of advantages such as it has the nitrogen content height, and are easy to use, its turnout and amount of application all increase day by day.Particularly produce the long-acting carbamide that contains Resorcinol (urease inhibitor) in recent years, having overcome common urea decomposes fast, utilization ratio is not high, and because after the ammonium of decomposition generation had increased the shortcomings such as pH value of soil rapidly, long-acting carbamide more and more was subjected to the attention of agriculture production.But the nutritive element of long-acting urea fertilizer is single, and long-term application causes that easily soil trace element lacks, and influences plant growth.Yet crop to the requirement of trace element fertilizer is seldom evenly used little fertilizer separately and often brings very big difficulty.The compound manure comparatively approaching with the technology of the present invention, as nitro phosphor complex, NpK complex fertilizer and add the compound manure that contains trace element that trace element makes on its basis and seen a lot.But at present select nitrogenous fertilizer such as bicarbonate of ammonia, ammonium sulfate, ammoniacal liquor mostly for use as the nitrogen element in the compound manure that contains trace element, their nitrogen contents own are lower, and long-term application will be destroyed the structure of soil, can not show a candle to use urea particularly long-acting carbamide is favourable.Up to the present also there is not a kind of long-acting urea fertilizer that contains trace element to ask the city.
The purpose of this invention is to provide a kind of compound long-efficiency urea fertilizer that contains trace element, soil scope that it is suitable for and crop scope be wide, use it can replenish the trace element that crop takes away effectively from soil, keep the balance of soil trace element, owing to the collaborative nutritional effect of trace element in this compound manure, the nitrogenous fertilizer effect of long-acting carbamide or urea is improved simultaneously.
The present invention contains the compound long-efficiency urea fertilizer of trace element, it is characterized in that said trace element is meant one or more elements in zinc, manganese, molybdenum, copper, boron or the ferro element.The weight percent of contained trace element is: zinc element 0.004～15.6%; Manganese element 0.003～13.6%; Molybdenum element 0.007～13.2%; Copper 0.005～15.6%; Boron 0.002～6.2%; Ferro element 0.003～15.4%.Above-mentioned element can add wherein one or more elements, but the long-acting carbamide or the urea content that add in the fertilizer of trace element back should not be lower than the 20%(weight percent).To above-mentioned trace element, can obtain compound manure by the mixture that adds one or more materials in the following material:
Zinc element: zinc sulfate, zinc oxide;
Manganese element: manganous sulfate, Manganous chloride tetrahydrate, manganese oxide;
Molybdenum element: ammonium molybdate, Sodium orthomolybdate, molybdic oxide;
Boron: boric acid, borax, sodium pentaborate;
Copper: copper sulfate, cupric chloride, cupric oxide;
Ferro element: ferrous sulfate, ferric sulfate, iron protoxide.
In addition, as the major ingredient in the compound manure can be long-acting carbamide or urea, and long-acting carbamide is meant the urea that adds the urease inhibitor Resorcinol, and the contained weight percent of the urease inhibitor Resorcinol in the long-acting carbamide is: 0.03～0.8%, and preferred values is 0.03～0.05.
The preparation method of compound long-efficiency urea fertilizer that the present invention contains trace element can adopt the synthetic long-acting carbamide or the technology of urea flow process of present use, for example adopt general water solution total cycling method, also be suitable for adopting improved water solution total cycling method flow process, as triumphant rice material method, Meng Teaidi thinks of a way, Mitsui recycle to extinction improved method and employing gas formulation, known synthesis technique flow process such as gas separating method and thermal cycling method, just in these technological process of productions, after long-acting carbamide or urea synthesis, with containing the solution or the suspension interpolation of trace element and being mixed in long shovel urea or the urea, make the composite urea fertilizer that contains trace element through granulating working procedure again before the granulation.Particularly when utilizing the technical process of synthetic long-acting carbamide, can be with containing solution and the Resorcinol solution of trace element, after urea synthesis, add simultaneously before the granulation and mix, after granulation, make and contain micro-long-acting carbamide compound manure.
Manufacturing process provided by the present invention, owing to be in the Production Flow Chart of former synthetic long-acting carbamide or urea, to have increased liquid microelement and urea liquid mixed processes, therefore in original production equipment, set up the liquid microelement storage tank, corresponding measuring pump and long-acting carbamide or urea liquid and liquid microelement mixed solution storage tank, storage tank can be made by nickel chromium stainless steel, below by example preparation technology's method afford of the present invention is further specified.
Example 1 contains the preparation of the composite urea fertilizer of trace element zinc
Utilize the technology of former urea synthesis, equipment and condition, before granulating working procedure with zinc chloride or zinc oxide, zinc sulfate, the aqueous solution of making or suspension by volume pump by, zinc sulfate (ZnSO
47H
2O) 3～20%, zinc sulfate (ZnSO
4H
2O) 2～20%, zinc chloride (ZnCl
2) 1.5-20%, or the weight percent of zinc oxide 1-20% (to urea), make the urea compound fertilizer that contains trace element zinc (0.6～15.6%) by mixing granulation in the volume pump adding urea liquid.
Fig. 1 is for adopting the production of general production of urea with full circulation of aqueous solution flow scheme improvements to contain the process flow sheet of the urea fertilizer of trace element by example 1.Among Fig. 1: 1, the mixing tank of ammonia and carbonic acid gas; 2, synthetic tower; 3, give separator; 4, middle pressure decomposition heater; 5, middle pressure separator decomposition; 6, low-pressure distillation tower; 7, low pressure decomposition heater; 8, low pressure separator decomposition; 9, urine flash drum; 12, liquid microelement storage tank; 13, liquid microelement gauger; 14, liquid microelement and urine mixed solution storage tank; 15, mixed solution liquid pump; 16, strainer; 17, primary evaporator heater; 18, one section vapor seperator; 19, two sections steaming well heaters; 20, dual circulation separator; 21, molten urea solution pump; 22, prilling tower.Technological process of the present invention is to have increased the liquid microelement storage tank in the production process of former urea, and the liquid microelement volume pump changes production technology of urea flow process into the technological process of production of producing the composite urea that contains trace element.
Example 2 contains the preparation of the long-acting urea fertilizer of trace element zinc, manganese.
Utilize technology, equipment and the condition of former synthetic long-acting carbamide, the solution that will contain zinc, manganese element before granulating working procedure is by adding in the urea liquid again in the volume pump adding urease inhibitor Resorcinol liquid or adding in the urea liquid by volume pump respectively.Contain zinc, manganese element can adopt zinc sulfate (ZnSO
47H
2O) 3～10%, manganous sulfate (MnSO
43H
2O) weight percent of the relative urea of 2-10%().The Resorcinol addition is the weight percent of the relative urea of 0.05～0.8%().Trace element can be taken other chemical form, is less than 20% but add the weight percent (in the composite urea fertilizer) that contains the microelement substance total amount.
Fig. 2 is for containing the process flow sheet of the urea fertilizer of trace element by the example 2 same productions of adopting general water solution total cycling method process for producing long effect urea flow process to correct one's mistakes.Same Fig. 1 of the meaning of 1～9,12～22 representatives, 10 among Fig. 2, urease inhibitor liquid storage tank; 11, urease inhibitor liquid volume pump; 14, urease inhibitor liquid and trace element mix storage tank with urine.
By the visible compound manure manufacturing process that contains trace element provided by the invention of last example, can be with existing long-acting carbamide or urea production process combination, embodiment is simple.Thereby be easy to by existing long-acting carbamide or urea production process transformation are produced the compound long-efficiency urea fertilizer that the present invention contains trace element.
Claims (6)
1, a kind of compound long-efficiency urea fertilizer that contains trace element is characterized in that said trace element is meant one or more elements in zinc, manganese, molybdenum, copper, boron or the ferro element.
2,, it is characterized in that the weight percent of contained trace element is: zinc element 0.004～15.6% according to the described compound long-efficiency urea fertilizer of claim 1; Manganese element 0.003～13.6%; Molybdenum element 0.007～13.2%; Copper 0.005～15.6%, boron 0.002～6.2%; Ferro element 0.003～15.4%; Can add wherein one or more elements, but the urea content that adds in the fertilizer of trace element back should not be lower than 80%.
3,, it is characterized in that trace element zinc, manganese, molybdenum, boron or ferro element can be realized by the mixture that adds one or more materials in the following material according to the described compound long-efficiency urea fertilizer of claim 1:
Zinc element: zinc sulfate, zinc chloride, zinc oxide;
Manganese element: manganous sulfate, Manganous chloride tetrahydrate, manganese oxide;
Molybdenum element: ammonium molybdate, Sodium orthomolybdate, molybdic oxide;
Copper: copper sulfate, cupric chloride, cupric oxide;
Boron: boric acid, borax;
Ferro element: ferrous sulfate, ferric sulfate, iron protoxide.
4,, it is characterized in that to contain the long-acting carbamide of Resorcinol as the urea of major ingredient according to the described compound long-efficiency urea fertilizer of claim 1.The content weight percent of Resorcinol is 0.03～0.8% when for long-acting carbamide.
5, a kind of preparation method according to the described compound long-efficiency urea fertilizer of claim 1, it adopts synthetic long-acting carbamide technical process, it is characterized in that before the synthetic granulating working procedure afterwards of long-acting carbamide, the solution that will contain trace element adds and mixing granulation obtains containing micro-composite urea fertilizer.
6,, it is characterized in that the solution that contains trace element to be mixed with Resorcinol solution back adding before the carbamide granulation operation and make the long-acting urea fertilizer that contains trace element according to the described preparation method of claim 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90105116 CN1056860A (en) | 1990-05-19 | 1990-05-19 | Contain compound long-efficiency urea fertilizer of trace element and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90105116 CN1056860A (en) | 1990-05-19 | 1990-05-19 | Contain compound long-efficiency urea fertilizer of trace element and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN1056860A true CN1056860A (en) | 1991-12-11 |
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ID=4878949
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| CN 90105116 Pending CN1056860A (en) | 1990-05-19 | 1990-05-19 | Contain compound long-efficiency urea fertilizer of trace element and preparation method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1042629C (en) * | 1997-08-29 | 1999-03-24 | 河北省沧州大化集团有限责任公司 | Controllable slowly-released granular urea fertilizer and its prepn. method |
| CN1048974C (en) * | 1995-12-14 | 2000-02-02 | 李振贤 | Traditional Chinese medicine pesticidal and disease preventing micro-fertilizer compound and its preparing method |
| CN1064943C (en) * | 1997-03-28 | 2001-04-25 | 寇庆德 | Urea synergist |
| CN1087724C (en) * | 1998-04-09 | 2002-07-17 | 天津市园林绿化研究所 | Complete element compound fertilizer for garden |
| CN107285842A (en) * | 2017-08-14 | 2017-10-24 | 广西鑫雅皇庭园林工程有限责任公司 | One kind greening sinojackia xylocarpa composite fertilizer and preparation method thereof |
| CN107619332A (en) * | 2016-07-14 | 2018-01-23 | 大庆昆仓石化产品销售有限公司 | A kind of long-acting boron molybdenum zinc medicine fertilizer technology method of multienzyme |
| CN108586006A (en) * | 2018-06-11 | 2018-09-28 | 茶陵湘东群利化工有限责任公司 | A kind of sulfuric acid oxidation copper compound fertilizer |
-
1990
- 1990-05-19 CN CN 90105116 patent/CN1056860A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1048974C (en) * | 1995-12-14 | 2000-02-02 | 李振贤 | Traditional Chinese medicine pesticidal and disease preventing micro-fertilizer compound and its preparing method |
| CN1064943C (en) * | 1997-03-28 | 2001-04-25 | 寇庆德 | Urea synergist |
| CN1042629C (en) * | 1997-08-29 | 1999-03-24 | 河北省沧州大化集团有限责任公司 | Controllable slowly-released granular urea fertilizer and its prepn. method |
| CN1087724C (en) * | 1998-04-09 | 2002-07-17 | 天津市园林绿化研究所 | Complete element compound fertilizer for garden |
| CN107619332A (en) * | 2016-07-14 | 2018-01-23 | 大庆昆仓石化产品销售有限公司 | A kind of long-acting boron molybdenum zinc medicine fertilizer technology method of multienzyme |
| CN107285842A (en) * | 2017-08-14 | 2017-10-24 | 广西鑫雅皇庭园林工程有限责任公司 | One kind greening sinojackia xylocarpa composite fertilizer and preparation method thereof |
| CN108586006A (en) * | 2018-06-11 | 2018-09-28 | 茶陵湘东群利化工有限责任公司 | A kind of sulfuric acid oxidation copper compound fertilizer |
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