CN101041607A - Production method and equipment for highly effective slow releasing compound fertilizer and product - Google Patents
Production method and equipment for highly effective slow releasing compound fertilizer and product Download PDFInfo
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- CN101041607A CN101041607A CNA2007100381361A CN200710038136A CN101041607A CN 101041607 A CN101041607 A CN 101041607A CN A2007100381361 A CNA2007100381361 A CN A2007100381361A CN 200710038136 A CN200710038136 A CN 200710038136A CN 101041607 A CN101041607 A CN 101041607A
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- Prior art keywords
- fertilizer
- urea
- compound fertilizer
- highly effective
- slow releasing
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Links
- 239000003337 fertilizer Substances 0.000 title claims abstract description 69
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 150000001875 compounds Chemical class 0.000 title claims description 32
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000002156 mixing Methods 0.000 claims abstract description 25
- 239000002994 raw material Substances 0.000 claims abstract description 16
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000002131 composite material Substances 0.000 claims abstract description 13
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 235000019270 ammonium chloride Nutrition 0.000 claims abstract description 6
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims abstract description 6
- 235000011130 ammonium sulphate Nutrition 0.000 claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 6
- 238000002844 melting Methods 0.000 claims description 27
- 230000008018 melting Effects 0.000 claims description 27
- 238000005469 granulation Methods 0.000 claims description 16
- 230000003179 granulation Effects 0.000 claims description 16
- 238000013268 sustained release Methods 0.000 claims description 16
- 239000012730 sustained-release form Substances 0.000 claims description 16
- 239000004202 carbamide Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 14
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 13
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims description 12
- 235000019837 monoammonium phosphate Nutrition 0.000 claims description 12
- 239000002002 slurry Substances 0.000 claims description 12
- 239000007921 spray Substances 0.000 claims description 11
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 10
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 claims description 9
- 239000006012 monoammonium phosphate Substances 0.000 claims description 9
- 208000006558 Dental Calculus Diseases 0.000 claims description 8
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 8
- 229940072033 potash Drugs 0.000 claims description 8
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 8
- 235000015320 potassium carbonate Nutrition 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 8
- 229920001807 Urea-formaldehyde Polymers 0.000 claims description 7
- 150000002828 nitro derivatives Chemical class 0.000 claims description 7
- 239000002686 phosphate fertilizer Substances 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 239000004323 potassium nitrate Substances 0.000 claims description 5
- 235000010333 potassium nitrate Nutrition 0.000 claims description 5
- 239000005696 Diammonium phosphate Substances 0.000 claims description 4
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 claims description 4
- 229910000388 diammonium phosphate Inorganic materials 0.000 claims description 4
- 235000019838 diammonium phosphate Nutrition 0.000 claims description 4
- 239000000395 magnesium oxide Substances 0.000 claims description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 4
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 4
- 239000000618 nitrogen fertilizer Substances 0.000 claims description 4
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 4
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 4
- 229960001763 zinc sulfate Drugs 0.000 claims description 4
- QFHMNFAUXJAINK-UHFFFAOYSA-N [1-(carbamoylamino)-2-methylpropyl]urea Chemical compound NC(=O)NC(C(C)C)NC(N)=O QFHMNFAUXJAINK-UHFFFAOYSA-N 0.000 claims description 3
- RGSMDLROAMCLFQ-UHFFFAOYSA-N acetaldehyde;urea Chemical compound CC=O.NC(N)=O RGSMDLROAMCLFQ-UHFFFAOYSA-N 0.000 claims description 3
- APUPEJJSWDHEBO-UHFFFAOYSA-P ammonium molybdate Chemical compound [NH4+].[NH4+].[O-][Mo]([O-])(=O)=O APUPEJJSWDHEBO-UHFFFAOYSA-P 0.000 claims description 3
- 239000011609 ammonium molybdate Substances 0.000 claims description 3
- 235000018660 ammonium molybdate Nutrition 0.000 claims description 3
- 229940010552 ammonium molybdate Drugs 0.000 claims description 3
- 229910021538 borax Inorganic materials 0.000 claims description 3
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 3
- 239000004327 boric acid Substances 0.000 claims description 3
- 229910000365 copper sulfate Inorganic materials 0.000 claims description 3
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 3
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 3
- UQGFMSUEHSUPRD-UHFFFAOYSA-N disodium;3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane Chemical compound [Na+].[Na+].O1B([O-])OB2OB([O-])OB1O2 UQGFMSUEHSUPRD-UHFFFAOYSA-N 0.000 claims description 3
- 239000010459 dolomite Substances 0.000 claims description 3
- 229910000514 dolomite Inorganic materials 0.000 claims description 3
- 210000003608 fece Anatomy 0.000 claims description 3
- 239000011790 ferrous sulphate Substances 0.000 claims description 3
- 235000003891 ferrous sulphate Nutrition 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 3
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 3
- 239000010871 livestock manure Substances 0.000 claims description 3
- SQQMAOCOWKFBNP-UHFFFAOYSA-L manganese(II) sulfate Chemical compound [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 claims description 3
- DSKJXGYAJJHDOE-UHFFFAOYSA-N methylideneurea Chemical compound NC(=O)N=C DSKJXGYAJJHDOE-UHFFFAOYSA-N 0.000 claims description 3
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 claims description 3
- TVXXNOYZHKPKGW-UHFFFAOYSA-N sodium molybdate (anhydrous) Chemical compound [Na+].[Na+].[O-][Mo]([O-])(=O)=O TVXXNOYZHKPKGW-UHFFFAOYSA-N 0.000 claims description 3
- 239000004328 sodium tetraborate Substances 0.000 claims description 3
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 3
- 229910052698 phosphorus Inorganic materials 0.000 claims description 2
- 229910052700 potassium Inorganic materials 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 3
- 229940059741 aqua care Drugs 0.000 abstract 1
- 238000005507 spraying Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 15
- 235000013877 carbamide Nutrition 0.000 description 14
- 239000000203 mixture Substances 0.000 description 10
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 description 8
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 7
- 241000282326 Felis catus Species 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 239000008187 granular material Substances 0.000 description 6
- 230000004927 fusion Effects 0.000 description 5
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 5
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 description 5
- 229910001950 potassium oxide Inorganic materials 0.000 description 5
- 210000002700 urine Anatomy 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 4
- 230000011218 segmentation Effects 0.000 description 4
- OHJMTUPIZMNBFR-UHFFFAOYSA-N biuret Chemical compound NC(=O)NC(N)=O OHJMTUPIZMNBFR-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 235000015097 nutrients Nutrition 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- AZQWKYJCGOJGHM-UHFFFAOYSA-N 1,4-benzoquinone Chemical compound O=C1C=CC(=O)C=C1 AZQWKYJCGOJGHM-UHFFFAOYSA-N 0.000 description 2
- RDXARWSSOJYNLI-UHFFFAOYSA-N [P].[K] Chemical compound [P].[K] RDXARWSSOJYNLI-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000013467 fragmentation Methods 0.000 description 2
- 238000006062 fragmentation reaction Methods 0.000 description 2
- -1 heat step by step Substances 0.000 description 2
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 2
- 230000013278 single fertilization Effects 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- BMRKQFGAHRNZCW-UHFFFAOYSA-N [N].C=O.NC(=O)N Chemical compound [N].C=O.NC(=O)N BMRKQFGAHRNZCW-UHFFFAOYSA-N 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000011785 micronutrient Substances 0.000 description 1
- 235000013369 micronutrients Nutrition 0.000 description 1
- 230000014075 nitrogen utilization Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 150000003672 ureas Chemical class 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Fertilizers (AREA)
Abstract
The invention discloses a manufacturing method of high-effective slow-release composite fertilizer, which comprises the following steps: allocating raw material through one or more component of aquacare, ammonium nitrate, ammonium sulfate and ammonium chloride; heating to 60-180 deg.c; blending 15-40% N, 6-35% P2O5, 6-35% K2O and 0.1%-20% slow-release agent; spraying; graining.
Description
Technical field
The present invention relates to the granulation of compound manure, particularly disclose a kind of production method and equipment and product of nitrogenous phosphorus potassium highly effective slow releasing compound fertilizer.
Background technology
The tower sprinkling pelleting technology of composite fertilizer is the fused mass granulating technology that Norway NorskHydro company releases in the world the earliest, and is that the comparison typical case is the UAP/UAPK urea-base compound fertilizer technology of matrix with molten urea solution (promptly being connected with carbamide production system) with melt monoammonium phosphate, powdery Repone K directly.Fusion is urinated solution or ammonium nitrate solution and passed through the monoammonium phosphate melt, get to the mixing reactor at prilling tower top respectively with pump, mix with Repone K fine powder again through preheating, the rotation porous nozzle that scraper is arranged through a kind of bottom again, spray in the tower with fan-shaped coverage rate, the ejection fluid column fragments into drop when thick connecing with air.Drop is in by deadweight decline process, and the air-flow cooling curing that is risen is collected at the bottom of tower and obtained composite fertilizer.
In recent years, the high tower compound fertilizer production technique with the high tower compound fertilizer that this explained hereafter is come out, has following advantage in China's development rapidly:
1, drying-free process, energy efficient.
2, three-waste free discharge belongs to cleaning procedure.
3, can directly utilize urea or ammonium nitrate liquation in the production system, simplify production technique.
4, nutrient density height, fertilizer efficiency is rapid.
5, outward appearance is mellow and full, is not easy to harden, and is difficult to counterfeit.
But in process of production, also there is deficiency.
1, urinate basic high tower, urea melting and powder mix formation suspension slurry at the bottom of tower, deliver to cat head by transport pipe.This process causes the fertilizer Biuret Content to raise easily influences fertilizer efficiency.
2, pulverulent material heating and mixing inequality bubble occurs in the sprinkling pelleting process easily, form micropore or cause the finished product fragmentation, influence quality.
3, be that readily avaiable fertilizer melts body mixing sprinkling pelleting owing to high tower prilling, the fertilizer nutrient dissolving is fast, executes volatilization in the soil, loss seriously.
Summary of the invention
The objective of the invention is to improve high tower compound fertilizer material quality, disclose a kind of production method and equipment and product of nitrogenous phosphorus potassium highly effective slow releasing compound fertilizer by high tower process of tradition and material composition are improved.
Its main contents comprise:
A: with nitro-compound fertilizer raw material or urea-base compound fertilizer raw material, heat step by step, mix at the cat head substep, at first urea or ammonium nitrate carry out fusion, then will carry out with it after the potash fertilizer preheating one-level mix, with on tower, carry out behind phosphate fertilizer, sustained release dosage, the additive powder preheating uniform mixing secondary mix the melting mixing liquid of suspended solids.
B: the melting charge slurry that contains suspended solids is sprayed by rotating granulation shower nozzle on the tower, and slip contacts with the formed upstream of natural ventilation at the bottom of the tower in the decline process in tower, finishes granulation process at the bottom of tower.
The present invention is achieved in that a kind of production method of highly effective slow releasing compound fertilizer, comprises proportioning raw materials, heating, mixing, granulation, it is characterized in that:
(1) composite fertilizer material nitrogenous fertilizer is selected one or more in urea, ammonium nitrate, ammonium sulfate and ammonium chloride; Phosphate fertilizer is selected one or both in monoammonium phosphate and diammonium phosphate; Potash fertilizer is selected one or more in vitriolate of tartar, Repone K, saltpetre; Composite fertilizer's weight percent proportioning is N 15～40%, P
2O
56～35%, K
2O 6～35%, and the sustained release dosage weight percent is 0.1%～20%; Sustained release dosage is one or more among urea formaldehyde, urea acetaldehyde, methylene urea, IBDU, NBPT, HQ, the DCD; Add that to fill agent be in ground dolomite, talcum powder, copper sulfate, zinc sulfate, ferrous sulfate, iron protocarbonate, manganous sulfate, ammonium molybdate, Sodium orthomolybdate, magnesium oxide, sal epsom, Sodium Tetraborate, the boric acid one or more.
(2) composite fertilizer material is heated respectively, Heating temperature is 60～180 ℃, nitrogenous fertilizer, potash fertilizer is added be mixed in the one-level mixing reactor then to contain the suspended solids melting charge slurry, mixes in the secondary mixing reactor after sustained release dosage being added phosphate fertilizer at last;
(3) on spray column with the melting mixing slip through the shower nozzle sprinkling pelleting.
The production method equipment of described highly effective slow releasing compound fertilizer, comprise melting device, one-level mixing reactor, secondary mixing reactor, spray column and shower nozzle, it is characterized in that: described spray column tower diameter is 8～22mm, and tower height is 80～135m, and spray highly is 30～100m.Shower nozzle is rotary differential prilling spry.
The characteristics of production technique of the present invention are by nitro-compound fertilizer raw material or urea-base compound fertilizer raw material are moved to the cat head heating, can save energy consumption, the energy expenditure that the transporter tower heading tape comes at the bottom of avoiding the fusion suspended solids by tower reduces melt residence time simultaneously, reduces biuret and generates.The substep heating can make mixing temperature stable equilibrium more step by step, prevents that temperature fluctuation from producing aeration granulation quality.After adding sustained release dosage, make the slow Ji mutually of fertilizer nutrient speed, improve fertilizer utilization efficiency, fertilizer efficiency period is long, makes agricultural reach single fertilization, exempts the operation of topdressing, saves resource, reduces the loss, reduces pollution, characteristics such as raising agricultural product security.
This technology also is applicable to other composite fertilizer, special-purpose fertile production technique except that being applicable to high tower melt pelletization compound fertilizer production technology.
Urea-base compound fertilizer of the present invention, N weight percent 15～40%, one or more in material choice urea, ammonium nitrate, ammonium sulfate, the ammonium chloride; P
2O
56～35%, one or both in material choice monoammonium phosphate and the diammonium phosphate; K
2O6～35%, one or more in material choice vitriolate of tartar, Repone K, the saltpetre.
Above-mentioned raw materials is heated to 60～145 ℃ respectively on tower, proceed step by step one-level mixing again, secondary mix, and make the melting charge slurry that contains suspended solids and go granulation.Wherein the content of phosphate fertilizer, potash fertilizer can not be 0 simultaneously, can produce ternary urea-base compound fertilizer or binary urea-base compound fertilizer like this.
Described is nitro-compound fertilizer, and N weight percent 15～40%, raw material are ammonium nitrate; P
2O
56～35%, raw material is a monoammonium phosphate; K
2O 6～35%, and raw material is one or both in Repone K, the vitriolate of tartar.
Above-mentioned raw materials is heated to 60～180 ℃ respectively on tower, proceed step by step one-level mixing again, secondary mix, and make the melting charge slurry that contains suspended solids and go granulation.Wherein the content of phosphate fertilizer, potash fertilizer can not be 0 simultaneously, can produce ternary nitro-compound fertilizer or binary nitro-compound fertilizer like this.
Described slow-release compound fertilizer is on tower sustained release dosage to be heated to 60～145 ℃, joins then in the urine based smelting slip of having made or in the nitro melting charge slurry, goes granulation after the mixing, can produce slowly-releasing urea-base compound fertilizer or slowly-releasing nitro-compound fertilizer.
The add-on of sustained release dosage is 0.1～20%, and sustained release dosage is one or more among urea formaldehyde, urea acetaldehyde, methylene urea, IBDU, NBPT, HQ, the DCD; Add that to fill agent be in ground dolomite, talcum powder, copper sulfate, zinc sulfate, ferrous sulfate, iron protocarbonate, manganous sulfate, ammonium molybdate, Sodium orthomolybdate, magnesium oxide, sal epsom, Sodium Tetraborate, the boric acid one or more.The use of potash fertilizer can add Repone K or vitriolate of tartar or saltpetre according to the prescription requirement, produces different slow-release compound fertilizers.
The invention has the beneficial effects as follows:
1, the various raw materials of urine base or nitro slow-release compound fertilizer; all be that heating respectively, substep mix on tower, the flow process of making melting charge slurry is short, thermosteresis is little, save energy, reduces biuret and produces; basic pore-free of fertiliser granulates or fragmentation can be used for the nuclear core of coated fertilizer.Present technique is applicable to the weather condition in the southern china or the north.
2, the high-efficiency sustained-release composite fertilizer nitrogen utilization efficiency height of producing, fertilizer efficiency period is long, can exempt the operation of topdressing, and reaches single fertilization, economizes on resources, and reduce to pollute, and is a kind of environment-friendly type composite fertilizer.
3, according to production requirement, can at any time that nitro is compoundly switch with production urea-base compound fertilizer, can satisfy the requirement of market to high-efficiency sustained-release composite fertilizer.
4, additive contains the required various middle micronutrient element of plant, replenishes various nutrition for plant, increases production high-quality.
Description of drawings
Accompanying drawing is an invention product processes schema.
Embodiment
The invention will be further described below in conjunction with embodiment.
With reference to the accompanying drawings, production unit of the present invention comprises melting device, preheater, one-level mixing reactor, secondary mixing reactor, spray column and shower nozzle.Tower is cylindrical, utilizes the height of tower to form convection of air, and the air-flow that makes progress evenly falls the granulation material.Melting device is positioned at the cat head structural sheet, and shower nozzle is rotary differential prilling spry.
Embodiment 1:
Get 560 kilograms of solid ureas, 135～145 ℃ of fusions in the one-level melting reactor, add 5 kilograms in 133 kilograms in Repone K, 30 kilograms of ground dolomites, zinc sulfate respectively in the fused urine, be transferred to then in the secondary melting reactor, add 50 kilograms in urea aldehyde, 222 kilograms of monoammonium phosphates.Fused urine mixture sprays by the cat head shower nozzle and enters the prilling tower granulation.
This product is nitrogenous 30%, and wherein urea formaldehyde nitrogen is 2%, Vanadium Pentoxide in FLAKES 10%, and potassium oxide 6%, granule strength 21 newton, moisture 0.6% contains slow-release nitrogen simultaneously.
Embodiment 2:
Get 503 kilograms in urea, 135～145 ℃ of fusions in the one-level melting reactor, segmentation adds 100 kilograms in ammonium nitrate, 200 kilograms in Repone K in the fused urine then; Be transferred to the secondary melting reactor then, 178 kilograms of the powdery monoammonium phosphates that adding mixes, 1 kilogram of sustained release dosage (cyanogen quinone), 18 kilograms in magnesium oxide is made slip in the melting mixing reactor, and melting charge slurry enters the prilling tower granulation by the cat head shower nozzle.
This product is nitrogenous 28%, contains Vanadium Pentoxide in FLAKES 8%, potassium oxide 12%, moisture 0.6%, granule strength 22 newton.
Embodiment 3:
Get 450 kilograms in urea, the steam by 135～145 ℃ in the urea melting device is melt into liquid state, and segmentation adds 150 kilograms of ammonium chlorides, 150 kilograms in ammonium sulfate, 248 kilograms in Repone K, 2 kilograms of sustained release dosages (Resorcinol) then.Melting charge slurry enters granulation in the prilling tower by shower nozzle.
This product has the quick-acting and long-acting advantage that combines, and is used to topdress and can takes effect at short notice.
This product is nitrogenous 27%, contains potassium oxide 15%, moisture 0.55%, granule strength 18 newton.
Embodiment 4:
Get 450 kilograms in ammonium nitrate, the steam by 150～180 ℃ in the urea melting device is melt into liquid state, and segmentation adds 250 kilograms of vitriolate of tartar then, 150 kilograms of monoammonium phosphates, and 50 kilograms of methylene ureas add and fill 100 kilograms of agent ground dolomites.Melting charge slurry enters granulation in the prilling tower by shower nozzle, generates nitro slowly-releasing efficient compound fertilizer.
This product has the quick-acting and long-acting advantage that combines, and is used to topdress and can takes effect at short notice.
This product is nitrogenous 21%, and wherein urea aldehyde nitrogen 2% contains Vanadium Pentoxide in FLAKES 7%, contains potassium oxide 13%, moisture 0.55%, granule strength 20 newton.
Embodiment 5:
Get 420 kilograms in ammonium nitrate, the steam by 150-180 ℃ in the one-level melting reactor is melt into liquid state, and segmentation adds 200 kilograms in Repone K then, the monoammonium phosphate 120 kg, and 2 kilograms of sustained release dosages (Resorcinol), 50 kilograms in sal epsom adds and fills 208 kilograms of agent.Melting charge slurry enters granulation in the prilling tower by shower nozzle, generates nitro slowly-releasing efficient compound fertilizer.
This product has the quick-acting and long-acting advantage that combines, and is used to topdress and can takes effect at short notice, and the later stage is not taken off fertilizer simultaneously.This product is nitrogenous 16%, contains Vanadium Pentoxide in FLAKES 6%, contains potassium oxide 12%, moisture 0.55%, granule strength 22 newton.
Claims (5)
1. the production method of a highly effective slow releasing compound fertilizer comprises proportioning raw materials, heating, mixing, granulation, it is characterized in that:
(1) composite fertilizer material nitrogenous fertilizer is selected one or more in urea, ammonium nitrate, ammonium sulfate and ammonium chloride; Phosphate fertilizer is selected one or both in monoammonium phosphate and diammonium phosphate; Potash fertilizer is selected one or more in vitriolate of tartar, Repone K and saltpetre; Composite fertilizer's weight percent proportioning is N 15～40%, P
2O
56～35%, K
2O 6～35%, and sustained release dosage is one or more among urea formaldehyde, urea acetaldehyde, methylene urea, IBDU, NBPT, HQ, the DCD; The sustained release dosage weight percent is 0.1%～20%; Add that to fill agent be in ground dolomite, talcum powder, copper sulfate, zinc sulfate, ferrous sulfate, iron protocarbonate, manganous sulfate, ammonium molybdate, Sodium orthomolybdate, magnesium oxide, sal epsom, Sodium Tetraborate, the boric acid one or more;
(2) composite fertilizer material is heated respectively, Heating temperature is 60～180 ℃, nitrogenous fertilizer, potash fertilizer is added be mixed in the one-level mixing reactor then to contain the suspended solids melting charge slurry, mixes in the secondary mixing reactor after sustained release dosage being added phosphate fertilizer at last;
(3) on spray column with the melting mixing slip through the shower nozzle sprinkling pelleting.
2. production method equipment used by the described highly effective slow releasing compound fertilizer of claim 1, comprise melting device, one-level mixing reactor, secondary mixing reactor, spray column and shower nozzle, it is characterized in that: described spray column tower diameter is 8～22m, tower height is 80～135m, and effectively spray highly is 30～100m.
3. highly effective slow releasing compound fertilizer production unit according to claim 2 is characterized in that: described granulation shower nozzle is rotary differential prilling spry.
4. product that obtains by the production method of the described highly effective slow releasing compound fertilizer of claim 1, it is characterized in that: described compound manure is a urea-base compound fertilizer, N weight percent 15～40%, one or more in material choice urea, ammonium nitrate, ammonium sulfate, the ammonium chloride; P
2O
56～35%, one or both in material choice monoammonium phosphate and the diammonium phosphate; K
2O6～35%, one or more in material choice vitriolate of tartar, Repone K, the saltpetre.
5. product that obtains by the production method of the described highly effective slow releasing compound fertilizer of claim 1, it is characterized in that: described compound manure is a nitro-compound fertilizer, N weight percent 15～40%, raw material are ammonium nitrate; P
2O
56～35%, raw material is a monoammonium phosphate; K
2O 6～35%, and raw material is one or both in Repone K, the vitriolate of tartar.
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