CN105948850A - Polypeptide chelated potassium zinc urea fertilizer and preparation method thereof - Google Patents
Polypeptide chelated potassium zinc urea fertilizer and preparation method thereof Download PDFInfo
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- CN105948850A CN105948850A CN201610264093.8A CN201610264093A CN105948850A CN 105948850 A CN105948850 A CN 105948850A CN 201610264093 A CN201610264093 A CN 201610264093A CN 105948850 A CN105948850 A CN 105948850A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C9/00—Fertilisers containing urea or urea compounds
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Abstract
The invention provides a polypeptide chelated potassium zinc urea fertilizer and a preparation method thereof, and belongs to the technical field of fertilizer. The fertilizer uses poly-aspartic acid as a chelating agent, and adds 5 kg of polypeptide chelated potassium zinc stock solution into each ton of urea based on the traditional urea. The fertilizer is a novel high efficiency nitrogenous fertilizer, can supply nitrogen, potassium, zinc elements required by plant, can improve the rate of absorbtion and utilization of the plant for the nutrient elements in soil, can supply biological growth elements evenly, and has strong synergistic effect for the nitrogenous fertilizer, potash fertilizer, and phosphate fertilizer. The chelating agent can be biodegraded, and has no pollution for the plant and the soil. The polypeptide chelated potassium zinc stock solution and urea solution can pass two-stage conveying devices of urea solution pump and fusion pump in the preparation method, so that the mixture can be mixed uniformly, and the stability of the product quality can be guaranteed. The polypeptide chelated potassium zinc stock solution is added into the inlet of the urea solution pump, and the moisture of the product can be controlled effectively after performing primary evaporation, granulation and cooling.
Description
Technical field
The present invention a kind of poly-peptide chelating potassium zinc urea fertilizer and preparation method thereof, belongs to technical field of fertilizers.
Background technology
On market, synergistic urea kind is roughly divided into: inorganic salt carbamide, organic salt carbamide, aminoacid carbamide, peptide urea, poly-peptide chelating salt carbamide, poly-peptide chelating salt carbamide belongs to emerging product at present, if poly-peptide chelating potassium is containing zinc carbamide, poly-peptide chelated zinc carbamide, poly-peptide chelating potassium carbamide, owing to wherein containing trace element needed for plant, polypeptide amino acid and nitrogen element, more can be absorbed by plants, improve the assimilation effect of nutrient substance, and added value is higher, meet the nitrogenous fertilizer industrial policy of country.It is stock solution to be joined in dual circulation inlet line solution, to ensure the stability of product quality that urea production enterprise utilizes water solution cycle method to produce poly-peptide chelating potassium carbamide.But these methods easily occur that product total nitrogen content is on the low side or moisture, biuret such as exceeds standard at the problem.And because of the difference of chelating agen, the fertilizer efficiency of the poly-peptide produced chelating potassium zinc urea fertilizer is the most different.
Summary of the invention
The present invention overcomes the deficiencies in the prior art, technical problem to be solved is to provide a kind of poly-peptide chelating potassium zinc urea fertilizer and preparation method thereof, uses novel chelating agen, improves traditional method, while strengthening fertilizer efficiency, it is ensured that the stability of product quality.
For solving above-mentioned technical problem, the technical solution adopted in the present invention is: a kind of poly-peptide chelating potassium zinc urea fertilizer, uses poly-aspartic-acid as chelating agen, uses poly-aspartic-acid as chelating agen, carbamide per ton adds poly-peptide chelating potassium zinc stock solution 5kg, is a kind of nitrogen product.
Described poly-peptide chelating potassium zinc urea fertilizer color is white or khaki, the mass fraction of total nitrogen >=46.2 ‰, mass fraction≤1.0% of biuret, mass fraction≤1.5% of moisture, mass fraction≤0.6% of MDU (in terms of HCHO), granularity is mass fraction >=90% of 2.0mm～4.75mm, poly-peptide chelating potassium content >=0.08%, poly-peptide chelated zinc content >=0.11%.
Raw materials used poly-peptide chelating potassium zinc stock solution outward appearance be dark brown, less than 40 DEG C have crystal generation, non-corrosiveness, do not react with carbamide below 230 degree, poly-peptide chelating agen will not decompose, in solution, active ingredient comprises: poly-peptide chelating potassium, poly-peptide chelated zinc, mass ratio is at 40-45%, in solution, other compositions are water, and crop does not produces the material poisoned.
The preparation method of poly-peptide chelating potassium zinc urea fertilizer, comprises the following steps:
(1) the poly-peptide chelating potassium zinc stock solution that concentration is 42% is sufficiently stirred in solution preparation vessel, is pumped into solution medial launder by solution after stirring, utilizes steam pipe coil in groove that solution temperature is heated to 45 DEG C, send into urine pump inlet by dosing pump；
(2) by urea solution pump, poly-peptide chelating potassium zinc stock solution is uniformly mixed with the urea liquid of concentration 74%, temperature 80～90 DEG C; send into primary evaporator heater and be heated to 128～135 DEG C; concentration is the poly-peptide chelating potassium zinc urine of 96%, delivers to comminutor through Melting pump.
(3) melted poly-peptide chelating potassium zinc urine is ejected into carbamide seed surface by nozzle in comminutor, is injected into the molten state poly-peptide chelating potassium zinc carbamide quick solidification of seed surface and cools down, and the moisture content in the most poly-peptide chelating potassium zinc urea liquid is evaporated.Wrapped through multi-stage jet, crystal seed is constantly grown up and is formed bulky grain poly-peptide chelating potassium zinc carbamide.
(4) from comminutor out granular poly-peptide chelating potassium zinc carbamide sieve by plane rotary screen, finished product poly-peptide chelating potassium zinc carbamide deliver to packaging, through automatic weighing and packing machine packaging；Large granule is after disintegrating machine and little granule enters comminutor circulation pelletize as crystal seed.
Chelating agen uses poly-aspartic-acid, and poly-aspartic-acid can be degraded, and is absorbed by plants.Poly-aspartic-acid can progressively hydrolyze after entering in plant, forms different polymerization degree grating, has the most marvellous biological activity, can be catalyzed the biochemical process that some are important；It is the raw material of several amino acid for plant aspartic acid, including 4 kinds of requisite methionine, threonine, isoleucine, lysine, special construction due to poly-aspartic-acid, wherein R-CH2-COOH, there are a lot of ligands in its poly-peptide structure, can chelate multiple simultaneously, many kinds of metal ions, many kinds of metal ions can be gathered crop root simultaneously, absorb for crop simultaneously, supplementary crop nutrition content more equalizes, the aspartic acid of poly-aspartic-acid is travelling speed aminoacid faster, quickly nutrient substance can be delivered in required organ, reduce the nutrient substance deposition at plant root, plant localized metallic element is avoided to be poisoned.
Compared with prior art the invention have the advantages that.
(1) the new-type fertilizer poly-peptide chelating potassium zinc urine that prepared by the present invention can be with science, the supplementary nitrogen of plant growth needs, potassium, zinc element reasonable, effective.
(2) in the fertilizer of the present invention poly-aspartic-acid can chelate in the middle of soil itself exist ammonium ion, potassium, calcium, magnesium, the various metals cation such as zinc, assemble (there is translocation) after chelating to absorb for crop around crop root, substantially increase the utilization rate of Trace Elements in Soil, it is to avoid Trace Elements in Soil is fixed by inorganic salt and is difficult to absorb.
(3) new-type fertilizer prepared by the present invention has the strongest potentiation to potash fertilizer, phosphate fertilizer, and potash fertilizer is easy to by leaching loss after entering soil, and potassium ion can be chelated, be stored in around crop root by chelate, thus reduces the leaching loss of potash fertilizer, improves the utilization rate of potash fertilizer；Phosphate fertilizer enters after soil, and phosphate radical is easy to combine with the metal ion such as the calcium in soil, magnesium, zinc, forms the phosphate of indissoluble, thus reduce P availability, chelate can chelate these metal ions, reduces the combination with phosphate radical, thus improves the effectiveness of phosphate fertilizer.
(4) using poly-aspartic-acid as chelating agen, owing to there are a lot of ligands in poly-peptide structure, compared with other chelating agen, can chelate multiple, many kinds of metal ions simultaneously, absorb for crop simultaneously, supplementary crop nutrition content more equalizes.
(5) in carbamide, poly-aspartic-acid can be degraded, and is absorbed by plants, and without any pollution in soil, and poly-aspartic-acid can progressively hydrolyze after entering in plant, forms different polymerization degree grating, can be catalyzed the biochemical process that some are important.
(6) in the preparation method of new-type fertilizer, poly-peptide chelating potassium zinc stock solution and urea liquid can be mixed thoroughly through urea solution pump, Melting pump, it is ensured that the stability of product quality.Poly-peptide chelating potassium zinc stock solution joins urea liquid pump inlet, and through one section of evaporation, pelletize cools down, can effectively control the moisture of product.
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further described.
Embodiment 1
A kind of poly-peptide chelating potassium zinc urea fertilizer, uses poly-aspartic-acid as chelating agen, on the basis of conventional urea, adds poly-peptide chelating potassium zinc stock solution 5kg, be a kind of new and effective nitrogen product in carbamide per ton.
Described poly-peptide chelating potassium zinc urea fertilizer color is white or khaki, the mass fraction of total nitrogen >=46.2 ‰, mass fraction≤1.0% of biuret, mass fraction≤1.5% of moisture, mass fraction≤0.6% of MDU (in terms of HCHO), granularity is mass fraction >=90% of 2.0mm～4.75mm, poly-peptide chelating potassium content >=0.08%, poly-peptide chelated zinc content >=0.11%.
Raw materials used poly-peptide chelating potassium zinc stock solution outward appearance be dark brown, less than 40 DEG C have crystal generation, non-corrosiveness, do not react with carbamide below 230 degree, poly-peptide chelating agen will not decompose, in solution, active ingredient comprises: poly-peptide chelating potassium, poly-peptide chelated zinc, mass ratio is 42%, in solution, other compositions are water, and crop does not produces the material poisoned.
The preparation method of poly-peptide chelating potassium zinc urea fertilizer, comprises the following steps:
(1) the poly-peptide chelating potassium zinc stock solution that concentration is 42% is sufficiently stirred in solution preparation vessel, is pumped into solution medial launder by solution after stirring, utilizes steam pipe coil in groove that solution temperature is heated to 45 DEG C, send into urine pump inlet by dosing pump；
(2) poly-peptide chelating potassium zinc stock solution uniformly being mixed with the urea liquid of concentration 74%, temperature 80 DEG C by urea solution pump, send into primary evaporator heater and be heated to 128 DEG C, concentration is the poly-peptide chelating potassium zinc urine of 96%, delivers to comminutor through Melting pump.
(3) melted poly-peptide chelating potassium zinc urine is ejected into carbamide seed surface by nozzle in comminutor, is injected into the molten state poly-peptide chelating potassium zinc carbamide quick solidification of seed surface and cools down, and the moisture content in the most poly-peptide chelating potassium zinc urea liquid is evaporated.Wrapped through multi-stage jet, crystal seed is constantly grown up and is formed bulky grain poly-peptide chelating potassium zinc carbamide.
(4) from comminutor out granular poly-peptide chelating potassium zinc carbamide sieve by plane rotary screen, finished product poly-peptide chelating potassium zinc carbamide deliver to packaging, through automatic weighing and packing machine packaging；Large granule is after disintegrating machine and little granule enters comminutor circulation pelletize as crystal seed.
Embodiment 2
A kind of poly-peptide chelating potassium zinc urea fertilizer, uses poly-aspartic-acid as chelating agen, on the basis of conventional urea, adds poly-peptide chelating potassium zinc stock solution 5kg, be a kind of new and effective nitrogen product in carbamide per ton.
Described poly-peptide chelating potassium zinc urea fertilizer color is white or khaki, the mass fraction of total nitrogen >=46.2 ‰, mass fraction≤1.0% of biuret, mass fraction≤1.5% of moisture, mass fraction≤0.6% of MDU (in terms of HCHO), granularity is mass fraction >=90% of 2.0mm～4.75mm, poly-peptide chelating potassium content >=0.08%, poly-peptide chelated zinc content >=0.11%.
Raw materials used poly-peptide chelating potassium zinc stock solution outward appearance be dark brown, less than 40 DEG C have crystal generation, non-corrosiveness, do not react with carbamide below 230 degree, poly-peptide chelating agen will not decompose, in solution, active ingredient comprises: poly-peptide chelating potassium, poly-peptide chelated zinc, mass ratio is 45%, in solution, other compositions are water, and crop does not produces the material poisoned.
The preparation method of poly-peptide chelating potassium zinc urea fertilizer, comprises the following steps:
(1) the poly-peptide chelating potassium zinc stock solution that concentration is 45% is sufficiently stirred in solution preparation vessel, is pumped into solution medial launder by solution after stirring, utilizes steam pipe coil in groove that solution temperature is heated to 45 DEG C, send into urine pump inlet by dosing pump；
(2) poly-peptide chelating potassium zinc stock solution uniformly being mixed with the urea liquid of concentration 74%, temperature 90 DEG C by urea solution pump, send into primary evaporator heater and be heated to 135 DEG C, concentration is the poly-peptide chelating potassium zinc urine of 96%, delivers to comminutor through Melting pump.
(3) melted poly-peptide chelating potassium zinc urine is ejected into carbamide seed surface by nozzle in comminutor, is injected into the molten state poly-peptide chelating potassium zinc carbamide quick solidification of seed surface and cools down, and the moisture content in the most poly-peptide chelating potassium zinc urea liquid is evaporated.Wrapped through multi-stage jet, crystal seed is constantly grown up and is formed bulky grain poly-peptide chelating potassium zinc carbamide.
(4) from comminutor out granular poly-peptide chelating potassium zinc carbamide sieve by plane rotary screen, finished product poly-peptide chelating potassium zinc carbamide deliver to packaging, through automatic weighing and packing machine packaging；Large granule is after disintegrating machine and little granule enters comminutor circulation pelletize as crystal seed.
Embodiment 3
A kind of poly-peptide chelating potassium zinc urea fertilizer, uses poly-aspartic-acid as chelating agen, on the basis of conventional urea, adds poly-peptide chelating potassium zinc stock solution 5kg, be a kind of new and effective nitrogen product in carbamide per ton.
Described poly-peptide chelating potassium zinc urea fertilizer color is white or khaki, the mass fraction of total nitrogen >=46.2 ‰, mass fraction≤1.0% of biuret, mass fraction≤1.5% of moisture, mass fraction≤0.6% of MDU (in terms of HCHO), granularity is mass fraction >=90% of 2.0mm～4.75mm, poly-peptide chelating potassium content >=0.08%, poly-peptide chelated zinc content >=0.11%.
Raw materials used poly-peptide chelating potassium zinc stock solution outward appearance be dark brown, less than 40 DEG C have crystal generation, non-corrosiveness, do not react with carbamide below 230 degree, poly-peptide chelating agen will not decompose, in solution, active ingredient comprises: poly-peptide chelating potassium, poly-peptide chelated zinc, mass ratio is 40%, in solution, other compositions are water, and crop does not produces the material poisoned.
The preparation method of poly-peptide chelating potassium zinc urea fertilizer, comprises the following steps:
(1) the poly-peptide chelating potassium zinc stock solution that concentration is 40% is sufficiently stirred in solution preparation vessel, is pumped into solution medial launder by solution after stirring, utilizes steam pipe coil in groove that solution temperature is heated to 45 DEG C, send into urine pump inlet by dosing pump；
(2) poly-peptide chelating potassium zinc stock solution uniformly being mixed with the urea liquid of concentration 74%, temperature 85 DEG C by urea solution pump, send into primary evaporator heater and be heated to 131 DEG C, concentration is the poly-peptide chelating potassium zinc urine of 96%, delivers to comminutor through Melting pump.
(3) melted poly-peptide chelating potassium zinc urine is ejected into carbamide seed surface by nozzle in comminutor, is injected into the molten state poly-peptide chelating potassium zinc carbamide quick solidification of seed surface and cools down, and the moisture content in the most poly-peptide chelating potassium zinc urea liquid is evaporated.Wrapped through multi-stage jet, crystal seed is constantly grown up and is formed bulky grain poly-peptide chelating potassium zinc carbamide.
(4) from comminutor out granular poly-peptide chelating potassium zinc carbamide sieve by plane rotary screen, finished product poly-peptide chelating potassium zinc carbamide deliver to packaging, through automatic weighing and packing machine packaging；Large granule is after disintegrating machine and little granule enters comminutor circulation pelletize as crystal seed.
The present invention can summarize with other the concrete form without prejudice to the spirit or essential characteristics of the present invention.Therefore, no matter from the point of view of which point, the embodiment above of the present invention all can only be considered the description of the invention and can not limit invention, claims indicate the scope of the present invention, and the scope of the present invention is not pointed out in above-mentioned explanation, therefore, any change in the implication suitable with claims of the present invention and scope, all it is considered as being included within the scope of the claims.
Claims (5)
1. a poly-peptide chelating potassium zinc urea fertilizer, it is characterised in that use poly-aspartic-acid as chelating agen, add poly-peptide chelating potassium zinc stock solution 5kg in carbamide per ton, be a kind of nitrogen product.
One the most according to claim 1 poly-peptide chelating potassium zinc urea fertilizer, it is characterised in that chelating agen used is poly-aspartic-acid.
One the most according to claim 1 poly-peptide chelating potassium zinc urea fertilizer, it is characterized in that, described poly-peptide chelating potassium zinc urea fertilizer color is white or khaki, the mass fraction of total nitrogen >=46.2 ‰, mass fraction≤1.0% of biuret, mass fraction≤1.5% of moisture, mass fraction≤0.6% of MDU (in terms of HCHO), granularity is mass fraction >=90% of 2.0mm～4.75mm, poly-peptide chelating potassium content >=0.08%, poly-peptide chelated zinc content >=0.11%.
One the most according to claim 1 poly-peptide chelating potassium zinc urea fertilizer, it is characterized in that, raw materials used poly-peptide chelating potassium zinc stock solution outward appearance be dark brown, less than 40 DEG C have crystal generation, non-corrosiveness, do not react with carbamide below 230 degree, poly-peptide chelating agen will not decompose, in solution, active ingredient comprises: poly-peptide chelating potassium, poly-peptide chelated zinc, mass ratio other compositions in 40-45%, solution are water.
5. the preparation method of a poly-peptide as claimed in claim 1 chelating potassium zinc urea fertilizer, it is characterised in that comprise the following steps:
(1) the poly-peptide chelating potassium zinc stock solution that concentration is 42% is sufficiently stirred in solution preparation vessel, is pumped into solution medial launder by solution after stirring, utilizes steam pipe coil in groove that solution temperature is heated to 45 DEG C, send into urine pump inlet by dosing pump；
(2) by urea solution pump, poly-peptide chelating potassium zinc stock solution is uniformly mixed with the urea liquid of concentration 74%, temperature 80～90 DEG C; send into primary evaporator heater and be heated to 128～135 DEG C; concentration is the poly-peptide chelating potassium zinc urine of 96%, delivers to comminutor through Melting pump；
(3) melted poly-peptide chelating potassium zinc urine is ejected into carbamide seed surface by nozzle in comminutor, is injected into the molten state poly-peptide chelating potassium zinc carbamide quick solidification of seed surface and cools down, and the moisture content in the most poly-peptide chelating potassium zinc urea liquid is evaporated；Wrapped through multi-stage jet, crystal seed is constantly grown up and is formed bulky grain poly-peptide chelating potassium zinc carbamide；
(4) from comminutor out granular poly-peptide chelating potassium zinc carbamide sieve by plane rotary screen, finished product poly-peptide chelating potassium zinc carbamide deliver to packaging, through automatic weighing and packing machine packaging；Large granule is after disintegrating machine and little granule enters comminutor circulation pelletize as crystal seed.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107266152A (en) * | 2017-08-24 | 2017-10-20 | 中化吉林长山化工有限公司 | Suitable for the production method and system of urea plant and the high tower compound fertilizer of granulation tower |
| CN113698248A (en) * | 2021-10-11 | 2021-11-26 | 重庆建峰化工股份有限公司 | Efficient ecological urea fertilizer and preparation method thereof |
| CN113929533A (en) * | 2021-11-25 | 2022-01-14 | 四川天华股份有限公司 | Method and device for preparing urea containing chelated potassium and zinc |
| CN114956892A (en) * | 2022-05-23 | 2022-08-30 | 宁夏巨泰农业科技发展有限公司 | Potassium chelate compound fertilizer based on polypeptide and preparation method thereof |
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Application publication date: 20160921 |