CN1398826A - Low-temperature melt process of producing granulated azophoska - Google Patents
Low-temperature melt process of producing granulated azophoska Download PDFInfo
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- CN1398826A CN1398826A CN 01126274 CN01126274A CN1398826A CN 1398826 A CN1398826 A CN 1398826A CN 01126274 CN01126274 CN 01126274 CN 01126274 A CN01126274 A CN 01126274A CN 1398826 A CN1398826 A CN 1398826A
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- Prior art keywords
- compound
- urea
- melt
- fertilizer
- repone
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000008569 process Effects 0.000 title abstract description 7
- 239000003337 fertilizer Substances 0.000 claims abstract description 67
- 239000004202 carbamide Substances 0.000 claims abstract description 34
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 33
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims abstract description 29
- 239000007787 solid Substances 0.000 claims abstract description 27
- 238000001816 cooling Methods 0.000 claims abstract description 25
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000002002 slurry Substances 0.000 claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 claims abstract description 16
- 239000004317 sodium nitrate Substances 0.000 claims abstract description 12
- 235000010344 sodium nitrate Nutrition 0.000 claims abstract description 12
- 239000000289 melt material Substances 0.000 claims abstract description 9
- 239000011573 trace mineral Substances 0.000 claims abstract description 5
- 235000013619 trace mineral Nutrition 0.000 claims abstract description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 48
- 150000001875 compounds Chemical class 0.000 claims description 27
- 229910052757 nitrogen Inorganic materials 0.000 claims description 24
- -1 phospho Chemical class 0.000 claims description 22
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 20
- 229940072033 potash Drugs 0.000 claims description 20
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 20
- 235000015320 potassium carbonate Nutrition 0.000 claims description 20
- QLULGSLAHXLKSR-UHFFFAOYSA-N azane;phosphane Chemical compound N.P QLULGSLAHXLKSR-UHFFFAOYSA-N 0.000 claims description 19
- 239000008187 granular material Substances 0.000 claims description 14
- 208000006558 Dental Calculus Diseases 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 12
- 229940001516 sodium nitrate Drugs 0.000 claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 8
- 239000005864 Sulphur Substances 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 5
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 4
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 claims description 4
- 229910000365 copper sulfate Inorganic materials 0.000 claims description 4
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 4
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-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
- 230000015572 biosynthetic process Effects 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
- 235000010338 boric acid Nutrition 0.000 claims description 3
- 239000011575 calcium Substances 0.000 claims description 3
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- 230000005484 gravity Effects 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
- 239000000155 melt Substances 0.000 claims description 3
- 238000003786 synthesis reaction Methods 0.000 claims description 3
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 3
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 3
- 229960001763 zinc sulfate Drugs 0.000 claims description 3
- 239000005749 Copper compound Substances 0.000 claims description 2
- 229910021538 borax Inorganic materials 0.000 claims description 2
- 150000001639 boron compounds Chemical class 0.000 claims description 2
- 150000001880 copper compounds Chemical class 0.000 claims description 2
- 229960000355 copper sulfate Drugs 0.000 claims description 2
- 229960004643 cupric oxide Drugs 0.000 claims description 2
- WZISDKTXHMETKG-UHFFFAOYSA-H dimagnesium;dipotassium;trisulfate Chemical compound [Mg+2].[Mg+2].[K+].[K+].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O WZISDKTXHMETKG-UHFFFAOYSA-H 0.000 claims description 2
- 239000011790 ferrous sulphate Substances 0.000 claims description 2
- 235000003891 ferrous sulphate Nutrition 0.000 claims description 2
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 2
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 2
- 150000002681 magnesium compounds Chemical class 0.000 claims description 2
- 239000005078 molybdenum compound Substances 0.000 claims description 2
- 150000002752 molybdenum compounds Chemical class 0.000 claims description 2
- TVXXNOYZHKPKGW-UHFFFAOYSA-N sodium molybdate (anhydrous) Chemical compound [Na+].[Na+].[O-][Mo]([O-])(=O)=O TVXXNOYZHKPKGW-UHFFFAOYSA-N 0.000 claims description 2
- 239000004328 sodium tetraborate Substances 0.000 claims description 2
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 2
- 239000011592 zinc chloride Substances 0.000 claims description 2
- 235000005074 zinc chloride Nutrition 0.000 claims description 2
- 239000011787 zinc oxide Substances 0.000 claims description 2
- CNFDGXZLMLFIJV-UHFFFAOYSA-L manganese(II) chloride tetrahydrate Chemical compound O.O.O.O.[Cl-].[Cl-].[Mn+2] CNFDGXZLMLFIJV-UHFFFAOYSA-L 0.000 claims 1
- 238000002156 mixing Methods 0.000 abstract description 7
- 239000004254 Ammonium phosphate Substances 0.000 abstract description 3
- 229910000148 ammonium phosphate Inorganic materials 0.000 abstract description 3
- 235000019289 ammonium phosphates Nutrition 0.000 abstract description 3
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract 2
- 235000011164 potassium chloride Nutrition 0.000 abstract 2
- 239000001103 potassium chloride Substances 0.000 abstract 2
- 235000013877 carbamide Nutrition 0.000 abstract 1
- 238000003912 environmental pollution Methods 0.000 abstract 1
- 239000000047 product Substances 0.000 abstract 1
- 239000011265 semifinished product Substances 0.000 abstract 1
- 239000000725 suspension Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 34
- 239000002131 composite material Substances 0.000 description 9
- 239000008188 pellet Substances 0.000 description 8
- 229910052700 potassium Inorganic materials 0.000 description 8
- GTTYPHLDORACJW-UHFFFAOYSA-N nitric acid;sodium Chemical compound [Na].O[N+]([O-])=O GTTYPHLDORACJW-UHFFFAOYSA-N 0.000 description 7
- 238000005469 granulation Methods 0.000 description 6
- 230000003179 granulation Effects 0.000 description 6
- 229910052698 phosphorus Inorganic materials 0.000 description 6
- 239000000975 dye Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000012768 molten material Substances 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- WZLMXYBCAZZIRQ-UHFFFAOYSA-N [N].[P].[K] Chemical compound [N].[P].[K] WZLMXYBCAZZIRQ-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 210000003608 fece Anatomy 0.000 description 3
- 239000010871 livestock manure Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 235000015097 nutrients Nutrition 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 239000004114 Ammonium polyphosphate Substances 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- DHKHZGZAXCWQTA-UHFFFAOYSA-N [N].[K] Chemical compound [N].[K] DHKHZGZAXCWQTA-UHFFFAOYSA-N 0.000 description 2
- YUWBVKYVJWNVLE-UHFFFAOYSA-N [N].[P] Chemical compound [N].[P] YUWBVKYVJWNVLE-UHFFFAOYSA-N 0.000 description 2
- 229920001276 ammonium polyphosphate Polymers 0.000 description 2
- OHJMTUPIZMNBFR-UHFFFAOYSA-N biuret Chemical compound NC(=O)NC(N)=O OHJMTUPIZMNBFR-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000011785 micronutrient Substances 0.000 description 2
- 235000013369 micronutrients Nutrition 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000013519 translation Methods 0.000 description 2
- ZIUSSTSXXLLKKK-KOBPDPAPSA-N (1e,4z,6e)-5-hydroxy-1,7-bis(4-hydroxy-3-methoxyphenyl)hepta-1,4,6-trien-3-one Chemical compound C1=C(O)C(OC)=CC(\C=C\C(\O)=C\C(=O)\C=C\C=2C=C(OC)C(O)=CC=2)=C1 ZIUSSTSXXLLKKK-KOBPDPAPSA-N 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- VFLDPWHFBUODDF-FCXRPNKRSA-N Curcumin Natural products C1=C(O)C(OC)=CC(\C=C\C(=O)CC(=O)\C=C\C=2C=C(OC)C(O)=CC=2)=C1 VFLDPWHFBUODDF-FCXRPNKRSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- ALKWJXWZUTYERW-UHFFFAOYSA-L O.O.O.O.[Mn](=O)(Cl)Cl Chemical class O.O.O.O.[Mn](=O)(Cl)Cl ALKWJXWZUTYERW-UHFFFAOYSA-L 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- UHWKUASXRMSZEK-UHFFFAOYSA-N [K].[P].[N].[N] Chemical compound [K].[P].[N].[N] UHWKUASXRMSZEK-UHFFFAOYSA-N 0.000 description 1
- MAHJBKDUCDFDMU-UHFFFAOYSA-N [O-][N+]([P])=O Chemical compound [O-][N+]([P])=O MAHJBKDUCDFDMU-UHFFFAOYSA-N 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 description 1
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 description 1
- 235000019826 ammonium polyphosphate Nutrition 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 239000001045 blue dye Substances 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- VFLDPWHFBUODDF-UHFFFAOYSA-N diferuloylmethane Natural products C1=C(O)C(OC)=CC(C=CC(=O)CC(=O)C=CC=2C=C(OC)C(O)=CC=2)=C1 VFLDPWHFBUODDF-UHFFFAOYSA-N 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000374 eutectic mixture Substances 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- SXQCTESRRZBPHJ-UHFFFAOYSA-M lissamine rhodamine Chemical compound [Na+].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=C(S([O-])(=O)=O)C=C1S([O-])(=O)=O SXQCTESRRZBPHJ-UHFFFAOYSA-M 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- WRUGWIBCXHJTDG-UHFFFAOYSA-L magnesium sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Mg+2].[O-]S([O-])(=O)=O WRUGWIBCXHJTDG-UHFFFAOYSA-L 0.000 description 1
- 229940061634 magnesium sulfate heptahydrate Drugs 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 239000011268 mixed slurry Substances 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 235000019837 monoammonium phosphate Nutrition 0.000 description 1
- 239000006012 monoammonium phosphate Substances 0.000 description 1
- 235000006180 nutrition needs Nutrition 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000001044 red dye Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 230000035924 thermogenesis Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
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- Fertilizers (AREA)
Abstract
The present invention is a low-temperature melt process for producing granulated azophoska. Melt material is first produced through mixing semi-finished product solid urea with sodium nitrate or potassium chloride or heating solid urea and sodium nitrate or potassium chloride, then it is mixed with solid ammonium phosphate to produce suspension melt slurry. The mixed melt slurry is dispersed into small liquid drops through a prilling granulator, and the small liquid drops are cooled, solidified in an oil cooling tank and separated to obtain the product. The said process may be also used in producing trace element fertilizer or color fertilizer. The said process has greatly lowered melt material temperature, no need of heating solid ammonium phosphate, simple production process, low cost, and no environmental pollution.
Description
Technical field
The present invention relates to a kind of manufacture method of granular nitrogen phospho potash complex fertilizer, relate to a kind of method that adopts the low-temperature melt method to produce the granular nitrogen phospho potash complex fertilizer or rather.
Background technology
In prior art, " chemical fertilizer handbook (China Translation and Publishing Corporation, 1984, the United Nations Industrial Development Organization compiled) report, the oil immersion prilling tower comminution granulation (Oil prilling) of relevant urea-ammonium polyphosphate mixture has been proved by nineteen sixty-eight U.S. TVA (TVA).Enter the granulation cup of rotation after the ammonium polyphosphate melts carries out pre-mixing with urea melt in this method in a groove, the temperature of mixed slurry is about 132 ℃, the slip tear drop that comes out from the granulation cup is through cooling off and being collected in the lightweight oil, this lightweight oil cools off holding temperature at about 38 ℃ by recirculated water, fertiliser granulates is separated from oil with centrifuging, and the fertiliser granulates size is 7～12 orders.The nitrogen phosphorus potassium (N-P of fertilizer product
2O
5-K
2O) formula of nutrient has 30-30-0,36-18-0,39-13-0.
" chemical fertilizer handbook (China Translation and Publishing Corporation, 1984, the United Nations Industrial Development Organization compiles) report, the result of study of carrying out oil immersion prilling tower granulation interim test based on the composite fertilizer of urea has been reported in Mitsui shipbuilding in 1972 (Misui Toatsu).Urea melt is with monoammonium phosphate and (in some cases) Repone K and the ammonium phosphate mixing of exsiccant and preheating, the mixture slip carries out the prilling tower granulation in one " prilling granulator (prilling device) ", and be captured in the low viscosity oil, fertiliser granulates is separated from oil by centrifuging.The nitrogen phosphorus potassium (N-P of fertilizer product
2O
5-K
2O) formula of nutrient has 18.6-18.6-18.6,18-21-17,28-28-0.The temperature of control slurry mixture is about 125 ℃, about 4 minutes of mixing time in the interim test.
Solid phosphorus ammonium or Repone K or vitriolate of tartar all need preheating in above-mentioned two kinds of composite fertilizer manufacture method, and the melt material temperature is greater than 120 ℃, and to the solid urea melting granulating technology, the Biuret Content of product is higher; Solid phosphorus ammonium adds pines for being easy to generate sheet material, stops up prilling spry.
Summary of the invention
The manufacture method that the purpose of this invention is to provide a kind of low-temperature melt granulated pellet shape NpK complex fertilizer, this method has overcome that solid phosphorus ammonium adds the agglomeration problems of thermogenesis and because the Biuret Content of the too high generation of melt material temperature is higher, problem such as ammonia effusion rate height in the mixing process, greatly reduce the energy consumption of production process simultaneously, and the fertilizer nitrogen phosphorus potassium proportion can be adjusted within the specific limits, can produce the granular nitrogen phospho potash complex fertilizer, also can produce nitrogen phosphorus, composite N-K fertilizer, to adapt to the nutritional needs of different crops.In addition, the compound manure manufacture method of the present invention also nutrient demand of visual crop adds a certain amount of moderate-element compound or trace compound, makes the granular nitrogen phospho potash complex fertilizer that contains multi-nutrient element.The present invention also can add a small amount of dyestuff and make colored fertilizer in the course of processing.
The principle of the manufacture method of granular nitrogen phospho potash complex fertilizer of the present invention is: according to urea and SODIUMNITRATE, Repone K can form the characteristics of eutectic mixture, different raw material fertilizer are mixed and heated to certain temperature after metering in a mixing tank, add solid phosphorus ammonium or Repone K (vitriolate of tartar) etc. then, mixed slip enters a prilling granulator that has many apertures, fertilizer slurry becomes little globule by aperture, mat gravity falls into the oil cooling groove with charge of oil in the certain altitude, bead drops in sedimentation in the oil, and cooling curing is the fertilizer small-particle, combine in the oil cooling bottom land, through promoting handling equipment the oil-containing granulated fertilizer is delivered to whizzer, with the oil on separating particles surface, promptly obtain the granular nitrogen phospho potash complex fertilizer.
The present invention realizes like this.The step of the method for low-temperature melt manufactured granular nitrogen phospho potash complex fertilizer of the present invention comprises:
(1) work in-process in urea synthesis, concentration is greater than 98% (weight), temperature is 135～145 ℃ urea strong solution or a melt, add SODIUMNITRATE or Repone K or vitriolate of tartar, generate melt material at 90～105 ℃, perhaps solid urea and SODIUMNITRATE or Repone K or vitriolate of tartar, be heated to 90～105 ℃ and generate melt material, the additional proportion of urea and SODIUMNITRATE and Repone K or vitriolate of tartar is 1: (0.02～0.2): (0～1) (weight ratio), the granularity of Repone K or vitriolate of tartar is less than 0.5 millimeter
(2) the phosphorus ammonium of granularity less than 0.5 millimeter added in the above-mentioned melt in proportion, mixed 1～3 minute, generate the molten slurry that contains phosphorus ammonium suspended substance, the additional proportion of urea and phosphorus ammonium is 1: (0～5) (weight ratio), slurry temperature are 80～105 ℃,
(3) above-mentioned molten slurry is separated into small droplets by prilling granulator, it is 25～45 ℃ oil cooling groove that small droplets mat gravity falls into oily temperature, cooling also is cured as 1～4 millimeter particle, the fertiliser granulates that falls into the oil cooling trench bottom is sent to whizzer separates overwhelming majority oil, promptly obtain the granular nitrogen phospho potash complex fertilizer of oleaginousness less than 1.5% (weight).
Cooling oil in the oil cooling groove of the present invention is a mineral oil, as machinery oil, quenching wet goods.Its heat is removed by water cooling.
Though the trace element that farm crop need seldom, the quality that improves crop yield and improve crop is had certain effect.The manufacture method of granular nitrogen phospho potash complex fertilizer of the present invention, in urea strong solution or melt and SODIUMNITRATE, Repone K or vitriolate of tartar blended while, also can add a certain amount of moderate-element compound or trace compound, in obtaining containing, the granular nitrogen phospho potash complex fertilizer of micronutrient according to the needs of crop or soil.
Moderate-element compound of the present invention is one or more the mixture in calcium cpd, magnesium compound, the sulphur compound, as compounds such as calcium sulfate, nitrocalcite, sal epsom, potassium magnesium sulfate, sulphur; Described trace compound is one or more the mixture in the compounds such as boron compound, copper compound, iron cpd, manganic compound, molybdenum compound, zn cpds, as compounds such as copper sulfate, cupric oxide, ammonium molybdate, Sodium orthomolybdate, boric acid, borax, ferrous sulfate, chelated iron, zinc sulfate, zinc oxide, zinc chloride, manganous sulfate, manganese oxide, Manganous chloride tetrahydrates.
A spot of trace compound directly joins in the fertilizer slurry, mixes the back granulation.
The manufacture method of granular nitrogen phospho potash complex fertilizer of the present invention at the fertilizer solution blended simultaneously, also can add a certain amount of dyestuff and make color grains shape compound manure.Described dyestuff is a matching stain, as Xylene Red, acid blue, erie black, turmeric yellow etc.The add-on of dyestuff and the ratio of fertilizer are (0.0001～0.0003): 1 (weight ratio).
The color of colored composite fertilizer can be used as the differentiation look of the brand mark of fertilizer enterprise or different varieties, trade mark fertilizer.But make colored fertilizer, except that the color that will consider dyestuff, also will consider of the influence of the intrinsic colour of the Repone K fertilizer that adds or some trace compounds, as red Repone K, copper sulfate etc. to the fertilizer color of required manufacturing.Should avoid making the influence of composite fertilizer required color by selecting different raw materials.
The manufacture method of granular nitrogen phospho potash complex fertilizer of the present invention, by the oleaginousness after centrifugal less than the also diatomite of the available finely powdered processing of applying powder of the granular compound fertilizer material of 1.5% (weight).Diatomaceous fineness is 90% less than 20 microns, and 50% less than 3 microns.
The present invention compares with existing fused mass granulating technology and has the following advantages:
1, can directly utilize work in-process---urea strong solution or melt in the urea plant urea synthesis, by introducing inorganic salt such as SODIUMNITRATE, Repone K, utilize it can form the characteristics of eutectoid point compound, got rid of the heat-processed of phosphorus ammonium, simplified Production Flow Chart greatly, investment cost and process cost are lower, can change the single disadvantage of original technology kind simultaneously.Granular nitrogen-phosphorus potassium Nitrogen, Phosphorus and Potassium can be produced, granular nitrogen-phosphorus, binary compound fertilizer containing nitrogen and potassium can be produced again.
2, melting granulating technology makes full use of the heat energy of former urea melt, and phosphorus ammonium (or Repone K) need not heating, and the melt material temperature reduces by 15～30 ℃, and moisture content is very low, and the drying-free process has been saved energy consumption.
3, qualified product particle percentage composition is very high, so does not have returning charge substantially in the production process.
4, the product nitrogen contains urea nitrigen, ammonia-state nitrogen and nitric nitrogen, and fertilizer efficiency is good.The product particle surface is slick and sly, and granule strength is big, good water solubility, prevented from caking.
5, product can be made into colour or contain multiple in the amount, the trace element compound manure, to adapt to the requirement of Different Crop, soil, weather.
6, good operational environment, three-waste free discharge.
Embodiment
In order to implement the present invention better, the present invention is further illustrated now to enumerate following embodiment, but embodiment is not a limitation of the present invention.Percentage ratio among the following embodiment all is weight percentage.
Embodiment 1
Get urea plant flash evaporator outlet urea soln or melt 200 grams, concentration is greater than 99%, about 140 ℃ of temperature, adding solid nitric acid sodium 36 grams and granularity restrain less than 0.5 millimeter white Repone K 180, add acid blue dye 0.08 gram simultaneously, mixed about 1 minute, 90～105 ℃ of slurry temperatures, granularity adds in the above-mentioned slip less than 0.5 millimeter solid phosphorus ammonium 116 grams, mixed 1～5 minute, contain the phosphorus ammonium, it is 25～45 ℃ oil cooling groove that the slip of Repone K suspended substance falls into oily temperature by Fitz chilsonator, cooling also is cured as 1～4 millimeter pellet, after the butyraceous granulated fertilizer separates most oil by whizzer, obtain blue particle shape NpK complex fertilizer product, this product contains N 20.6%, P
2O
59.6%, K
2O 20.3%, moisture 0.50%, the granule strength of product greater than 20 newton/.
Embodiment 2
Get urea plant flash evaporator outlet urea soln 200 grams, concentration about 99%, about 140 ℃ of temperature, adding solid nitric acid sodium 6 grams and granularity restrain less than 0.5 millimeter red Repone K 140, mixed about 1 minute, 90～105 ℃ of slurry temperatures, it is 25～45 ℃ oil cooling groove that slip falls into oily temperature by Fitz chilsonator, cooling also is cured as 1～4 millimeter pellet, after the butyraceous granulated fertilizer separates most oil by whizzer, obtain red granules shape composite N-K fertilizer product, this product contains N 26.6%, P
2O
50%, K
2O 24.3%, moisture 0.8%, the granule strength of product greater than 15 newton/.
Embodiment 3
Solid urea 300 grams, solid nitric acid sodium 48 grams, be heated to 100 ℃ and become fused solution, granularity restrains less than 0.5 millimeter phosphorus ammonium 200, boric acid 3 grams, magnesium sulfate heptahydrate 9 grams, join in the molten materials, mixed 1～5 minute, 80～95 ℃ of slurry temperatures, it is 25～45 ℃ oil cooling groove that the slip that contains phosphorus ammonium suspended solid falls into oily temperature by Fitz chilsonator, cools off and is cured as 1～4 millimeter pellet, the butyraceous granulated fertilizer obtains containing N 30.6%, P after separating most oil by whizzer
2O
516.1%, the nitro phosphor complex of moisture 0.50%, this fertilizer contains magnesium, sulphur moderate-element and micronutrient boron, the granule strength of product be greater than 20 newton/.
Embodiment 4
Solid urea 200 grams, solid nitric acid sodium 30 grams, solid Repone K 100 grams, be heated to 110 ℃ and become fused solution, granularity restrains less than 0.5 millimeter phosphorus ammonium 40, copper sulfate 4 grams, ammonium molybdate 4 grams join in the molten materials together, mix about 3 minutes, about 95 ℃ of slurry temperature, it is 25～45 ℃ oil cooling groove that this material falls into oily temperature by Fitz chilsonator, cools off and is cured as 1～4 millimeter pellet, after the butyraceous granulated fertilizer separates most oil by whizzer, obtain mazarine granular nitrogen phospho potash complex fertilizer, this product contains N 27.4%, P
2O
54.8%, K
2O 16.2%, moisture 0.50% contain sulphur moderate-element and trace copper and molybdenum simultaneously, the granule strength of product be 15 newton/.
Embodiment 5
Solid urea 200 grams, solid nitric acid sodium 33.6 grams, be heated to 100 ℃ and become fused solution, granularity is less than vitriolate of tartar 194.7 grams of 0.5 millimeter white, calcium sulfate 10 grams, zinc sulfate 4 grams, manganous sulfate 4 gram joins in the molten materials, mix about 2 minutes after, 95 ℃ of slurry temperatures, it is 25～45 ℃ oil cooling groove that the slip that contains the vitriolate of tartar suspended substance falls into oily temperature by Fitz chilsonator, cools off and is cured as 1～4 millimeter pellet, after the butyraceous granulated fertilizer separates most oil by whizzer, obtain amber granular nitrogen-potassium composite fertilizer product, this product N: K
2O=1: 1, contain N 22.7%, K
2O 22.7%, moisture 0.50% contain calcium, sulphur, zinc moderate-element and trace element simultaneously, the granule strength of product be 18 newton/.
Embodiment 6
Solid urea 100 grams, solid nitric acid sodium 17 grams, granularity is less than Repone K 40 grams of 0.5 millimeter white, be heated to 105 ℃ and become fused solution, add acid red dye 0.015 gram, solid phosphorus ammonium 55 grams, join in the molten materials, after mixing about 2 minutes, 95 ℃ of slurry temperatures contain the phosphorus ammonium, it is 25～45 ℃ oil cooling groove that the slip of Repone K suspended substance falls into oily temperature by Fitz chilsonator, cooling also is cured as 1～4 millimeter pellet, the butyraceous granulated fertilizer obtains large red granular nitrogen-potassium composite fertilizer product after separating most oil by whizzer, and this product contains N25.8%, P
2O
511.3%, K
2O 11.4%, moisture 0.50%, its granule strength be 16 newton/.
Embodiment 7
Solid urea 200 grams, solid nitric acid sodium 30 grams, be heated to 105 ℃ and become fused solution, granularity restrains less than 0.5 millimeter white Repone K 160, join in the molten urea solution, mixed about 1 minute, 95 ℃ of slurry temperatures, it is 25～45 ℃ oil cooling groove that the slip that contains the Repone K suspended substance falls into oily temperature by Fitz chilsonator, cooling also is cured as 1～4 millimeter pellet, the butyraceous granulated fertilizer obtains white granular composite N-K fertilizer product after separating most oil by whizzer, and this product contains N 24.8%, K
2O 24.6%, moisture 0.5%, granule strength greater than 18 newton/.
Claims (4)
1, a kind of method of low-temperature melt manufactured granular nitrogen phospho potash complex fertilizer is characterized in that the step of this method comprises:
(1) work in-process in urea synthesis, concentration is greater than 98% (weight), temperature is 135～145 ℃ urea strong solution or a melt, add SODIUMNITRATE or Repone K or vitriolate of tartar, generate melt material at 90～105 ℃, perhaps solid urea and SODIUMNITRATE or Repone K or vitriolate of tartar, be heated to 90～105 ℃ and generate melt material, the additional proportion of urea and SODIUMNITRATE or Repone K or vitriolate of tartar is 1: (O.02～0.2): (O～1) (weight ratio), the granularity of Repone K or vitriolate of tartar is less than 0.5 millimeter
(2) the phosphorus ammonium of granularity less than 0.5 millimeter added in the above-mentioned melt in proportion, mixed 1～3 minute, generate the molten slurry that contains phosphorus ammonium suspended substance, the additional proportion of urea and phosphorus ammonium is 1: (O～5) (weight ratio), slurry temperature are 80～105 ℃,
(3) above-mentioned molten slurry is separated into small droplets by prilling granulator, it is 25～45 ℃ oil cooling groove that small droplets mat gravity falls into oily temperature, cooling also is cured as 1～4 millimeter particle, the fertiliser granulates that falls into the oil cooling trench bottom is sent to whizzer separates overwhelming majority oil, promptly obtain the granular nitrogen phospho potash complex fertilizer of oleaginousness less than 1.5% (weight).
2, the manufacture method of granular nitrogen phospho potash complex fertilizer according to claim 1, it is characterized in that in urea strong solution or melt and SODIUMNITRATE blended while, also can add moderate-element compound or trace compound, in obtaining containing, the trace element the granular nitrogen phospho potash complex fertilizer.
3, the manufacture method of granular nitrogen phospho potash complex fertilizer according to claim 2 is characterized in that described moderate-element compound is one or more the mixture in calcium cpd, magnesium compound, the sulphur compound; Described trace compound is one or more the mixture in boron compound, copper compound, iron cpd, manganic compound, molybdenum compound, the zn cpds.
4,, it is characterized in that described moderate-element compound is one or more the mixture in the compounds such as calcium sulfate, nitrocalcite, sal epsom, potassium magnesium sulfate, sulphur according to the manufacture method of claim 2 or 3 described granular nitrogen phospho potash complex fertilizers; Described trace compound is one or more the mixture in the compounds such as copper sulfate, cupric oxide, ammonium molybdate, Sodium orthomolybdate, boric acid, borax, ferrous sulfate, chelated iron, zinc sulfate, zinc oxide, zinc chloride, manganous sulfate, manganese oxide, Manganous chloride tetrahydrate.
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|---|---|---|---|
| CN 01126274 CN1398826A (en) | 2001-07-19 | 2001-07-19 | Low-temperature melt process of producing granulated azophoska |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102020513A (en) * | 2010-12-28 | 2011-04-20 | 瓮福（集团）有限责任公司 | Additive for tower-type pelletizing of compound fertilizer |
| CN103626568A (en) * | 2012-08-29 | 2014-03-12 | 谢树才 | Preparation technology for double-enzyme zinc and ammonium composite fertilizer |
-
2001
- 2001-07-19 CN CN 01126274 patent/CN1398826A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102020513A (en) * | 2010-12-28 | 2011-04-20 | 瓮福（集团）有限责任公司 | Additive for tower-type pelletizing of compound fertilizer |
| CN103626568A (en) * | 2012-08-29 | 2014-03-12 | 谢树才 | Preparation technology for double-enzyme zinc and ammonium composite fertilizer |
| CN103626568B (en) * | 2012-08-29 | 2015-08-12 | 谢树才 | A kind of two enzyme zinc ammonium compound fertilizer preparation technology |
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