CN103910819B - A kind of preparation method of hydroscopic high-molecular resin ammonium phosphate water-retention fertilizer - Google Patents
A kind of preparation method of hydroscopic high-molecular resin ammonium phosphate water-retention fertilizer Download PDFInfo
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- 239000003337 fertilizer Substances 0.000 title claims abstract description 68
- 206010016807 Fluid retention Diseases 0.000 title claims abstract description 37
- 239000011347 resin Substances 0.000 title claims abstract description 22
- 229920005989 resin Polymers 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000004254 Ammonium phosphate Substances 0.000 title claims abstract description 10
- 229910000148 ammonium phosphate Inorganic materials 0.000 title claims abstract description 10
- 235000019289 ammonium phosphates Nutrition 0.000 title claims abstract description 10
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 title claims abstract description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 69
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 22
- 239000007864 aqueous solution Substances 0.000 claims abstract description 15
- 238000007334 copolymerization reaction Methods 0.000 claims abstract description 15
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 12
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 11
- 239000011574 phosphorus Substances 0.000 claims abstract description 11
- 238000001035 drying Methods 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 33
- 238000006116 polymerization reaction Methods 0.000 claims description 23
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 21
- 239000000243 solution Substances 0.000 claims description 17
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 14
- 230000035484 reaction time Effects 0.000 claims description 14
- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical compound OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 11
- 230000002745 absorbent Effects 0.000 claims description 9
- 239000002250 absorbent Substances 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 8
- 239000004159 Potassium persulphate Substances 0.000 claims description 7
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 7
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 7
- 239000004202 carbamide Substances 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 235000011194 food seasoning agent Nutrition 0.000 claims description 7
- 239000003999 initiator Substances 0.000 claims description 7
- 239000011259 mixed solution Substances 0.000 claims description 7
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 7
- 235000019394 potassium persulphate Nutrition 0.000 claims description 7
- 239000011541 reaction mixture Substances 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 7
- 239000007790 solid phase Substances 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 238000009835 boiling Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 20
- 238000000034 method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 7
- 239000002699 waste material Substances 0.000 abstract description 4
- 235000013619 trace mineral Nutrition 0.000 abstract description 3
- 239000011573 trace mineral Substances 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000002912 waste gas Substances 0.000 abstract description 2
- 239000002351 wastewater Substances 0.000 abstract description 2
- 230000004888 barrier function Effects 0.000 abstract 1
- 239000002689 soil Substances 0.000 description 37
- 239000000126 substance Substances 0.000 description 12
- 238000011161 development Methods 0.000 description 9
- 230000018109 developmental process Effects 0.000 description 9
- 230000008635 plant growth Effects 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 7
- 210000003608 fece Anatomy 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- 239000010871 livestock manure Substances 0.000 description 7
- 239000012615 aggregate Substances 0.000 description 6
- 241000196324 Embryophyta Species 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000013270 controlled release Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 230000012010 growth Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 230000035558 fertility Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 235000016709 nutrition Nutrition 0.000 description 2
- 230000035764 nutrition Effects 0.000 description 2
- 230000000050 nutritive effect Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- 244000025254 Cannabis sativa Species 0.000 description 1
- 241000370738 Chlorion Species 0.000 description 1
- 244000241257 Cucumis melo Species 0.000 description 1
- 235000015510 Cucumis melo subsp melo Nutrition 0.000 description 1
- 241000361919 Metaphire sieboldi Species 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- FJJCIZWZNKZHII-UHFFFAOYSA-N [4,6-bis(cyanoamino)-1,3,5-triazin-2-yl]cyanamide Chemical compound N#CNC1=NC(NC#N)=NC(NC#N)=N1 FJJCIZWZNKZHII-UHFFFAOYSA-N 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- HIVLDXAAFGCOFU-UHFFFAOYSA-N ammonium hydrosulfide Chemical compound [NH4+].[SH-] HIVLDXAAFGCOFU-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000002362 mulch Substances 0.000 description 1
- 235000018343 nutrient deficiency Nutrition 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 230000008121 plant development Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 239000002688 soil aggregate Substances 0.000 description 1
- 239000002681 soil colloid Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Abstract
The invention provides the preparation method of a kind of hydroscopic high-molecular resin (ammonium phosphate) water-retention fertilizer, comprise: prepare the NaOH aqueous solution, neutralization reaction, graft copolymerization, solidify drying, pulverize five steps, shortened process, reduce the production time, reduce production cost, thus solve the technical barrier that the production cycle is long, cost is high, add the content of the trace elements such as water-retention fertilizer nitrogen, phosphorus simultaneously.Produce without the three wastes (waste material, waste gas, waste water) in production process, environmentally safe, safety and environmental protection, constant product quality.
Description
Technical field
The present invention relates to the ammonium phosphate water-retention fertilizer that a kind of hydroscopic high-molecular resin manufactures, specifically belong to the production technique of hydroscopic high-molecular resin (SAP).
Background technology
SAP water-retention fertilizer is the SAP water-retention fertilizer novel material formed for polymerizable raw material with chemical fertilizer and organic monomer (vinylformic acid, acrylamide) etc.SAP water-retention fertilizer is mainly used in the cultivation of farm-forestry crop, plant development, and water-retention fertilizer self is containing a large amount of various trace elements such as nitrogen, phosphorus.There is water suction, water conservation, fertilizer conservation, insulation and drought resisting, anti-Desertification simultaneously, activate the functions such as woody plant growth.It can absorb own wt 100-700 moisture doubly, rainwater and the liquid manure of pouring, fast absorption can be stored, supply nutrition uniformly, guarantee that arid ability is resisted in plant-growth according to demand of plant growth.The development & application of SAP water-retention fertilizer product, represents the direction of development in the future.Having the development & application of special drought resisting, water saving, the chemistry such as water-retention fertilizer, drought resistance agent of water conservation and fertilizer effect, physics and biological technology products, is study one of key content of improving regime of soil water and fertility and improve plant water sources fertilizer efficiency rate over nearly 30 years in the world.Both at home and abroad the research of SAP water-retention fertilizer be have not been reported.SAP water-retention fertilizer is a kind of novel Controlled Release Fertilizer, the water-retention fertilizer novel material be polymerized by hydroscopic high-molecular resin production technique and chemical fertilizer, integrates water suction, water conservation, fertilizer nutrient supply, controlled release, improves water and fertilizer utilization.To promotion high-efficiency water-saving, save fertile agricultural there is important effect.China is a large agricultural country, and the nutrient deficiency of farm crop and water deficient are the important factors of restriction China grain-production.Especially in arid, semiarid zone, moisture condition is the bottom line of grain-production, improve the key that the utilization ratio of precipitation is volume increase, and moisture limits the effective utilization of crop to fertilizer from many aspects, so the agricultural development of arid, semiarid zone " crucial in water, outlet at fertilizer ".At present, the research of water-retention fertilizer is more and more subject to the attention of agriculture field, and the performance that research center of gravity also starts from how improving water-retention fertilizer shifts to its practical application in agroforestry.The now agricultural SAP of domestic and international development & production, one is that cost is high, two is only have absorbent function not have fertilizer function, therefore the development trend of following SAP product is: (1) this project is innovated by technical research, adopt the water-retention fertilizer that chemical fertilizer is polymerized with vinylformic acid and sodium hydroxide at home and abroad first, excellent property, with low cost, practical SAP water-retention fertilizer novel material can be prepared, there is the dual-use function of water conservation, fertilizer, claim the chemical fertilizer of energy water-absorbing-retaining.In the past because the long-term chemical fertilizer that directly uses in large quantities particularly uses ammonium fertilizer in a large number, in the process of its nitrification, discharged hydrogen ion after ammonium ion enters soil, made soil acidifying gradually.Ammonium ion can displace calcium ion soil colloid particulate playing connection effect, causes soil particle to disperse, thus destroys soil aggregate, makes the physics-chem characteristic of soil there occurs change, causes soil compaction, and fertility declines.Meanwhile, a large amount of applied nitrogen, introduces a large amount of non-principal nutritive ingredient or toxic substance to soil, and as chlorion in the sulfate ion in sulphur ammonium and oronain, they have suppression or toxic action to the normal activity of soil microorganisms.Soil acidification is spoiled soil character not only, and can promote the release and transport of some hazardous contaminants in soil or make it toxicity to strengthen, and the soil organismss such as biological and earthworm is reduced, also accelerates the loss of some nutritive elements of soil.Present peasant generally feels soil compaction, and crops difficulty has been planted; People generally feel that fruit is not fragrant, melon is sweetless, dish is tasteless.Crops quality degradation, what reason? the function organic substance of the stalk in agriculture production is burned, the material cycle of agroecosystem is artificially interrupted, the carrier of agriculture production---the organic content in soil is minimum, excessive chemical fertilizer causes the ecological key element quality of agriculture production to decline, the very crux that Here it is.The appearance of SAP water-retention fertilizer can change the unfavorable phenomenon of above chemical fertilizer to soil, because SAP water-retention fertilizer has water suction, water conservation, fertilizer conservation, Controlled Release Fertilizer performance, alleviates the harm of chemical fertilizer to soil greatly.Improvement soil can be played, make soil become crumb structure, keep soil from packing together and salinization, the liquid manure of soil is not easily run off, improve the utilization ratio of soil liquid manure.SAP water-retention fertilizer in soil absorption moisture repeatedly, form gel shrinks and expand, cause a large amount of micro-interstices to soil, improve the ventilation property of soil, improvement root system environment impels the growth of rhizosphere microbial, prevents hardening and salinification of soil.(2) water-retention fertilizer of chemical fertilizer and stalk, vinylformic acid and acrylamide polymerization, self contain the trace element such as a large amount of nitrogen, phosphorus that plant-growth is permitted, traditional fertilizer can be substituted, meet the demand of Promoting plant growth, can be widely used in the plantation and cultivation seedling-cultivating etc. of farm-forestry crop, the utilization ratio greatly improving liquid manure can reach more than 85%.(3) super absorbent resin that is polymerized of chemical fertilizer: at water-absorbing-retaining functionally, have special strong water suction group, can produce Thief zone association in resin inside and by its mesh-structured water suction.Its maximum water absorption is tall and big every square centimeter 13 kilograms-14 kilograms, the pure water of hundreds of times to thousands of times of Absorbable rod own wt, and these absorbed moisture can not squeeze out with general physical method, so it has again very strong water-retentivity.Suction force due to tree root is mostly every square centimeter 17 kilograms-18 kilograms, generally there will not be the refluence of root tissue water status, and fine-root directly can absorb the moisture in the water-retention fertilizer of storage, this characteristic determines the widespread use of water-retention fertilizer in agroforestry resisting drought saving water, joint fertilizer.
The appearance of water-retention fertilizer is hopeful the fertilizer of large-scale application in agricultural most after traditional fertilizer, agricultural chemicals, mulch film in the world.The growth of agroforestry plant be unable to do without sunlight, water, fertile three large key elements, and the appearance of water-retention fertilizer solves two large key elements of plant-growth.Be future development water saving, joint fertile agricultural reduction agroforestry production cost, reach the direction of agroforestry high yield good harvest.Along with China's drought and water shortage, the aggravation of fertilizer deficiency problem and the enforcement of strategy to develop western regions, development water saving, the fertile agricultural of joint, to recover and to build the needs of ecotope day by day urgent.The appearance of water-retention fertilizer, the production development marketization, will become agricultural high-effiency water saving, save the important chemical water-saving joint fertilizer technology in the fields such as the greening of fertile forestation planting grass, vegetables cultivation of fruit tree.Believe in the near future, with the forerunner of technology and take as the leading factor with enterprise, water-retention fertilizer will play an important role in agroforestry field.
Summary of the invention
For the deficiency that prior art exists, technical problem to be solved by this invention is, a kind of preparation method of hydroscopic high-molecular resin ammonium phosphate water-retention fertilizer is provided, shortened process, reduce the production time, reduce production cost, solve a large amount of traditional fertilizer that uses to an injury difficult problem for soil, increase the content of SAP water-retention fertilizer nitrogen, phosphorus, supply demand of plant growth.Improvement soil, prevents hardening of soil.Constant product quality.
For solving the problems of the technologies described above, the technical solution used in the present invention is, a kind of hydroscopic high-molecular resin manufactures the preparation method of ammonium phosphate water-retention fertilizer, comprises following content:
Manufacture the preparation method of hydroscopic high-molecular resin water-retention fertilizer, comprise following content:
(1) the NaOH aqueous solution is prepared: concentration is the NaOH solution 800g of 30%;
(2) neutralization reaction: the NaOH aqueous solution prepared is joined 1500g purity continuously and is greater than in the vinylformic acid of 99.5%, carry out neutralization reaction, the reaction times is 20 minutes; Then 60-70 DEG C is cooled to;
(3) graft copolymerization: in the solution after neutralization reaction, the disposable 1200g of adding phosphoric acid, 500g urea stir, rotating speed is that 110-120 turns, add 8g ethylene glycol linking agent again, then 4g Potassium Persulphate initiator is added, carry out graft copolymerization, the temperature in reaction process controls at 100 DEG C-115 DEG C, and the reaction times is 15-20 minute;
(4) drying is solidified: be diverted to by reaction mixture in polymerization digestor; React mixed solution after 10-20 minute and aggregate into solid, in polymerization process, heat of polymerization makes material seasoning;
(5) pulverize: solid phase prod is ground into particle, gets product.
Water absorbent rate 300g/g; Phosphorus content >=45%; Nitrogen content >=9%
The preparation method of above-mentioned hydroscopic high-molecular resin, the vinylformic acid used: 1.051 gram per centimeters when proportion is 20 DEG C, boiling point is 141.3 DEG C, and flash-point is 54.5 DEG C.
The preparation method of above-mentioned hydroscopic high-molecular resin, comprises following content:
(1) the NaOH aqueous solution is prepared: concentration is the NaOH solution 800g of 30%;
(2) neutralization reaction: the NaOH aqueous solution prepared is joined 1500g purity continuously and is greater than in the vinylformic acid of 99.5%, carry out neutralization reaction, the reaction times is 20 minutes; Then 60-70 DEG C is cooled to;
(3) graft copolymerization: in the solution after neutralization reaction, the disposable 1260g of adding phosphoric acid, 550g urea stir, rotating speed is that 100-120 turns, add 9g ethylene glycol linking agent again, then 5g Potassium Persulphate initiator is added, carry out graft copolymerization, the temperature in reaction process controls at 100 DEG C-115 DEG C, and the reaction times is 15-20 minute;
(4) drying is solidified: be diverted to by reaction mixture in polymerization digestor; React mixed solution after 10-20 minute and aggregate into solid, in polymerization process, heat of polymerization makes material seasoning;
(5) pulverize: solid phase prod is ground into particle, gets product.
Water absorbent rate 315g/g; Phosphorus content >=45%; Nitrogen content >=9%
The preparation method of above-mentioned hydroscopic high-molecular resin, the vinylformic acid used: 1.051 gram per centimeters when proportion is 20 DEG C, boiling point is 141.3 DEG C, and flash-point is 54.5 DEG C.
A kind of hydroscopic high-molecular resin of the present invention manufactures the preparation method of ammonium phosphate water-retention fertilizer, and tool has the following advantages and beneficial effect:
1, on production technology process, once product is aggregated into, without the need to toasting drying, the process of polymerization exotherm is exactly dry process, without the need to gelatinization, without the need to processes such as washing, saponification, make the technological process of production shorten 5 times, finished product can be produced in 1 hour, reduce production cost.Solve a large amount of traditional fertilizer that uses to an injury difficult problem for soil.Meanwhile, produce without the three wastes (waste material, waste gas, waste water) in production process, environmentally safe, safety and environmental protection.
2, constant product quality, plant root can be placed directly in, to the growth fanout free region of root system of plant, after soil Homogeneous phase mixing, the liquid manure in storage soil that can be a large amount of, does not evaporate for a long time and does not run off, improve preserving soil moisture, water conservation, fertilizer-preserving ability, supply nutrition uniformly according to demand of plant growth, effectively promote the surviving of plant, g and D, guarantee that arid ability is resisted in plant-growth.Meanwhile, improved soil nodule structure, keeps soil from packing together and salinization, and the liquid manure of soil is not easily run off, and improves soil liquid manure utilization ratio.The censorship of water-retention fertilizer product, through Qingdao City's quality supervision and test check the requirement (NO:QIQ-12360556) meeting NY886-2004 agricultural industry standard;
Embodiment
Embodiment 1
The preparation method of above-mentioned hydroscopic high-molecular resin, comprises following content (1) the preparation NaOH aqueous solution: concentration is the NaOH solution 800g of 30%;
(2) neutralization reaction: the NaOH aqueous solution prepared is joined 1500g purity continuously and is greater than in the vinylformic acid of 99.5%, carry out neutralization reaction, the reaction times is 20 minutes; Then 60-70 DEG C is cooled to;
(3) graft copolymerization: in the solution after neutralization reaction, the disposable 1260g of adding phosphoric acid, 550g urea stir, rotating speed is that 100-110 turns, add 8g ethylene glycol linking agent again, then 5g Potassium Persulphate initiator is added, carry out graft copolymerization, the temperature in reaction process controls at 100 DEG C-115 DEG C, and the reaction times is 15-20 minute;
(4) drying is solidified: be diverted to by reaction mixture in polymerization digestor; React mixed solution after 10-20 minute and aggregate into solid, in polymerization process, heat of polymerization makes material seasoning;
(5) pulverize: solid phase prod is ground into particle, gets product.
Water absorbent rate 290g/g; Phosphorus content >=45%; Nitrogen content >=9%
Embodiment 2
The preparation method of above-mentioned hydroscopic high-molecular resin, comprises following content
(1) the NaOH aqueous solution is prepared: concentration is the NaOH solution 800g of 30%;
(2) neutralization reaction: the NaOH aqueous solution prepared is joined 1500g purity continuously and is greater than in the vinylformic acid of 99.5%, carry out neutralization reaction, the reaction times is 20 minutes; Then 70-80 DEG C is cooled to;
(3) graft copolymerization: in the solution after neutralization reaction, the disposable 1270g of adding phosphoric acid, 530g urea stir, rotating speed is that 110-120 turns, add 6g ethylene glycol linking agent again, then 4g Potassium Persulphate initiator is added, carry out graft copolymerization, the temperature in reaction process controls at 100 DEG C-115 DEG C, and the reaction times is 15-20 minute;
(4) drying is solidified: be diverted to by reaction mixture in polymerization digestor; React mixed solution after 10-20 minute and aggregate into solid, in polymerization process, heat of polymerization makes material seasoning;
(5) pulverize: solid phase prod is ground into particle, gets product.
Water absorbent rate 310g/g; Phosphorus content >=45%; Nitrogen content >=9%
Embodiment 3
The preparation method of above-mentioned hydroscopic high-molecular resin, comprises following content
(1) the NaOH aqueous solution is prepared: concentration is the NaOH solution 800g of 30%;
(2) neutralization reaction: the NaOH aqueous solution prepared is joined 1500g purity continuously and is greater than in the vinylformic acid of 99.5%, carry out neutralization reaction, the reaction times is 20 minutes; Then 60-70 DEG C is cooled to;
(3) graft copolymerization: in the solution after neutralization reaction, the disposable 1230g of adding phosphoric acid, 570g urea stir, rotating speed is that 110-120 turns, add 8g ethylene glycol linking agent again, then 4g Potassium Persulphate initiator is added, carry out graft copolymerization, the temperature in reaction process controls at 100 DEG C-115 DEG C, and the reaction times is 15-20 minute;
(4) drying is solidified: be diverted to by reaction mixture in polymerization digestor; React mixed solution after 10-20 minute and aggregate into solid, in polymerization process, heat of polymerization makes material seasoning;
(5) pulverize: solid phase prod is ground into particle, gets product.
Water absorbent rate 280g/g; Phosphorus content >=45%; Nitrogen content >=9%
Embodiment 4
The preparation method of above-mentioned hydroscopic high-molecular resin, comprises following content
(1) the NaOH aqueous solution is prepared: concentration is the NaOH solution 800g of 30%;
(2) neutralization reaction: the NaOH aqueous solution prepared is joined 1500g purity continuously and is greater than in the vinylformic acid of 99.5%, carry out neutralization reaction, the reaction times is 20 minutes; Then 65-75 DEG C is cooled to;
(3) graft copolymerization: in the solution after neutralization reaction, the disposable 1220g of adding phosphoric acid, 520g urea stir, rotating speed is that 110-120 turns, add 8g ethylene glycol linking agent again, then 5g Potassium Persulphate initiator is added, carry out graft copolymerization, the temperature in reaction process controls at 100 DEG C-115 DEG C, and the reaction times is 15-20 minute;
(4) drying is solidified: be diverted to by reaction mixture in polymerization digestor; React mixed solution after 10-20 minute and aggregate into solid, in polymerization process, heat of polymerization makes material seasoning;
(5) pulverize: solid phase prod is ground into particle, gets product.
Water absorbent rate 330g/g; Phosphorus content >=45%; Nitrogen content >=9%
The above is only preferred embodiment of the present invention, and be not restriction the present invention being made to other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the Equivalent embodiments of equivalent variations.But everyly do not depart from technical solution of the present invention content, any simple modification, equivalent variations and the remodeling done above embodiment according to technical spirit of the present invention, still belong to the protection domain of technical solution of the present invention.
Claims (2)
1. a preparation method for hydroscopic high-molecular resin ammonium phosphate water-retention fertilizer, comprises following content:
(1) the NaOH aqueous solution is prepared: concentration is the NaOH solution 800g of 30%;
(2) neutralization reaction: the NaOH aqueous solution prepared is joined 1500g purity continuously and is greater than in the vinylformic acid of 99.5%, carry out neutralization reaction, the reaction times is 20 minutes; Then 60-70 DEG C is cooled to;
(3) graft copolymerization: in the solution after neutralization reaction, the disposable 1200g of adding phosphoric acid, 500g urea stir, rotating speed is 110-120rpm, add 8g ethylene glycol linking agent again, then 4g Potassium Persulphate initiator is added, carry out graft copolymerization, the temperature in reaction process controls at 100 DEG C-115 DEG C, and the reaction times is 15-20 minute;
(4) drying is solidified: be diverted to by reaction mixture in polymerization digestor; React mixed solution after 10-20 minute and aggregate into solid, in polymerization process, heat of polymerization makes material seasoning;
(5) pulverize: solid phase prod is ground into particle, gets product.
2. the preparation method of hydroscopic high-molecular resin ammonium phosphate water-retention fertilizer according to claim 1, is characterized in that, described hydroscopic high-molecular resin ammonium phosphate water-retention fertilizer water absorbent rate is 300g/g, phosphorus content>=45%, nitrogen content>=9%; Described vinylformic acid proportion is 1.051 gram per centimeters 20 DEG C time
3, boiling point is 141.3 DEG C, and flash-point is 54.5 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310001880.XA CN103910819B (en) | 2013-01-04 | 2013-01-04 | A kind of preparation method of hydroscopic high-molecular resin ammonium phosphate water-retention fertilizer |
Applications Claiming Priority (1)
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| CN112042322B (en) * | 2020-09-15 | 2022-04-08 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Fiber granule for side slope spray seeding, preparation method and spray seeding method |
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