CN104788181A - Production method of multielement microelement amino acid chelating fertilizer - Google Patents
Production method of multielement microelement amino acid chelating fertilizer Download PDFInfo
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Abstract
The invention discloses a production method of a multielement microelement amino acid chelating fertilizer and relates to the manufacturing of fertilizers for agriculture, particularly a preparation method of a common microelement chelating fertilizer for crops. By using sodium polyaspartate as a chelating agent, the microelement chelates and a macroelement fertilizer are combined to produce the fertilizer. The obtained fertilizer is applied to soil and dissolved, and the microelements are driven by the osmotic pressure caused by absorption of the macroelements to be close to the root system, so that the absorption efficiency is remarkably improved; in addition, the different microelement chelates are respectively synthesized in different reaction kettles and controlled by using a flowmeter and added to the fertilizer according to the required proportion, so that the flexibility of the microelement formula is guaranteed to be suitable for different requirements of different crops in different regions. According to the production method disclosed by the invention, different microelement chelates mixed in a buffer tank enter into a compound fertilizer granulating device through an atomizing distributor so as to ensure that the different microelements and the microelements and macroelements are uniformly mixed, so that the fertilizer application effect is guaranteed.
Description
Technical field
The present invention relates to agricultural fertilizer manufacture, is the preparation method that a kind of farm crop commonly use the inner complex fertilizer of trace element specifically.
Background technology
Along with the increase of farm output, applying quantity of chemical fertilizer constantly rises.And for a long time, China's ubiquity and paid attention to the phenomenon that macroelement despises trace element, cause Trace Elements in Soil content too low, the needs of plant growth can not be met, also have impact on the assimilated efficiency of macroelement fertilizer.In recent years, trace element fertilizer is especially paid attention to, and how to promote that crop also becomes the important topic of fertilizer industry to the absorption of trace element.Several main metal trace element, as iron, zinc, manganese, copper etc., be greater than in the soil of 6 in pH value, very easily form precipitation and cannot be absorbed, and with macromole and metal element chelate, forming the inner complex stronger to pH value adaptive faculty is the effective way addressed this problem.
In the patent of invention of the synthesis chelating fertilizer that current China announces, great majority prepare inner complex with sequestrant and micro-reaction, then directly uses.The water soluble fertilizer that this method is used for foliage-spray or irrigation is relatively more effective, then has certain limitation for the field crop still needing to spread fertilizer over the fields or cash crop.This is because, the absorption of metal trace element needs soluble in water, and the pulling force produced by Crop transpirstion effect is entered by root system or blade face and does in object, and once directly spread fertilizer over the fields in soil, the chance that metal trace element inner complex can touch crop root is less, so efficiency is very low.
Research proves, by microelement chelate and macroelement composite fertilizer with the use of, effectively can promote assimilated efficiency, because the absorption of the macroelement such as nitrogen, phosphorus, potassium is not the pulling force by transpiration, but depend on the osmotic pressure doing to produce with the concentration difference of root system surrounding environment in object, and microelement chelate can near root system under the effect of this osmotic pressure, thus make assimilated efficiency greatly promote.Application number be 200610030505.8 Chinese invention patent disclose a kind of EDTA tetra-acid solution and copper, zinc, manganese, iron etc. react the method generating full element chelating fertilizer, EDTA system sequestrant has higher stability constant K, but itself does not possess fertilizer efficiency, be difficult to again degraded, easily cause Soil Environmental Pollution, in addition expensive, in application, therefore there is limitation to a certain degree.Application number be 200710107078.3 Chinese invention patent then adopt the multiple organic acid mixtures such as oxalic acid, oxysuccinic acid, citric acid, toxilic acid to make sequestrant, this sequestrant cost is low, solvability good, but the sequestrant of mixture composition, due to the optimal ph of various raw material when there is chelatropic reaction, temperature and different from the mol ratio of trace element, is difficult to after mixture obtain Optimal technique process on the whole.Application number be 93119901.8 Chinese invention patent disclose a kind of manufacture method of chelate multicomponent mixed microfertilizer, be by trace element, EDTA sequestrant and macroelement fertilizer co-grinding, bag distribution packaging.This method is easy and simple to handle, cost is lower, but not there is chelatropic reaction in process of production, but be administered in soil dissolve after carry out chelating again, so inevitably cause sequestration efficiency lower, and EDTA system sequestrant itself does not possess fertilizer efficiency, be difficult to again degraded, easily cause Soil Environmental Pollution, certain destruction can be caused to environment, in addition expensive, in application, therefore there is limitation to a certain degree.Other documents then have no the method coordinating macroelement composite fertilizer to prepare fertilizer microelement chelate and announce.
Summary of the invention
The object of the present invention is to provide and microelement chelate and macroelement composite fertilizer are coordinated the method for producing fertilizer, its technical scheme adopted is as follows:
A production method for more trace elements amino acid chelate fertilizer, comprises the following steps:
(1) for different trace elements, respectively in different reactors, the proportionally vitriol of adding technology water and this trace element, is stirred to after dissolving completely, slowly adds the sodium polyaspartate of corresponding amount, after dissolving completely, be adjusted to required pH value with dilute sulphuric acid and ammoniacal liquor, be warming up to 70 DEG C, with the rotating speed of 500r/min, reaction 1h, obtains the poly-aspartic-acid inner complex of each trace element;
(2) under under meter controls traffic conditions, proportionally with volume pump, the poly-aspartic-acid inner complex of each reactor medium trace element is transported in surge tank, fully mixes;
(3) according to the requirement of micro-total amount, with volume pump, the mixture of the poly-aspartic-acid inner complex of trace element each in surge tank is added in compound fertilizer granulating device, itself and the large element compound fertilizer raw material joined in compound fertilizer granulating device are in advance mixed and carries out granulation, after granulation completes, more trace elements amino acid chelate fertilizer can be obtained in compound fertilizer granulating device exit.
If described trace element is iron, then its vitriol adopted is iron vitriol, and the mass ratio of sodium polyaspartate, process water, iron vitriol is 1:1.5:2.05, the required pH=4.5 of reaction.
If described trace element is manganese, then its vitriol adopted is manganese sulfate monohydrate, and the mass ratio of sodium polyaspartate, process water, manganese sulfate monohydrate is 1:2:1.2, the required pH=5.5 of reaction.
If described trace element is zinc, then its vitriol adopted is Zinc Sulphate Heptahydrate, and the mass ratio of sodium polyaspartate, process water, Zinc Sulphate Heptahydrate is 1:1.5:2.15, the required pH=5.0 of reaction.
If described trace element is copper, its vitriol adopted is cupric sulfate pentahydrate, and the mass ratio of sodium polyaspartate, process water, cupric sulfate pentahydrate is 1:1.5:2, the required pH=5.0 of reaction.
Further, in step (three), first add the mixture of the poly-aspartic-acid inner complex of each trace element to compound fertilizer granulating device portal place with volume pump, then utilize atomization sparger to be sprayed in compound fertilizer granulating device by the mixture of the poly-aspartic-acid inner complex of each trace element.
Further, if preparation Hainan, the cash crop on the ground such as Fujian the micro-amino acid chelate fertilizer that is suitable for, then described trace element should comprise iron, manganese, zinc, copper, it plants the inner complex of gained in step (), and to be respectively poly-aspartic-acid chelating ferrous, poly-aspartic-acid Chelated Manganese, poly-aspartic-acid chelated zinc, poly-aspartic-acid chelated copper, poly-aspartic-acid is chelating ferrous, poly-aspartic-acid Chelated Manganese, poly-aspartic-acid chelated zinc, poly-aspartic-acid chelated copper is transported in surge tank with the throughput ratio of 10:6.1:6.5:1 in step (two).If the cash crop of preparation Guangdong, zhejiang and other places the micro-amino acid chelate fertilizer that is suitable for, then described trace element should comprise manganese, zinc, copper, its inner complex of planting gained in step () is respectively poly-aspartic-acid Chelated Manganese, poly-aspartic-acid chelated zinc, poly-aspartic-acid chelated copper, and poly-aspartic-acid Chelated Manganese, poly-aspartic-acid chelated zinc, poly-aspartic-acid chelated copper are transported in surge tank with the throughput ratio of 13.5:8.7:1 in step (two).
By the realization of technique scheme, the production method of more trace elements amino acid chelate fertilizer provided by the present invention has following beneficial effect:
One, the present invention adopts sodium polyaspartate to be sequestrant, sodium polyaspartate is as water-soluble Biomimetic Polymers, effectively can promote the absorption of Plant To Nutrient element, promote that root system increases, improve resistance, reduce the run off surface water that causes and body of groundwater of fertile medicine to pollute, and very easily biological degradation, high-efficiency environment friendly.
Two, in addition, compare with small molecules amino acid, sodium polyaspartate is as polymkeric substance, sequestering power is stronger, and after α position carboxyl loses a Sauerstoffatom, by steric interference, inner complex can be formed with zinc-manganese copper iron with the ratio of 1:1, thus reduce consumption, reduce costs.
Three, the poly-aspartic-acid microelement chelate synthesized in a kettle., scope of application scope is wide, both can directly add in the production technique of composite fertilizer in the form of a solution, this ensure that trace element being uniformly distributed and assimilated efficiency in fertilizer, also solid product can be obtained through single vaporization, so that be used alone or transport.
Four, microelement chelate and macroelement composite fertilizer are coordinated production fertilizer, after also dissolving in gained Term Fertilization to soil, the osmotic pressure that the absorption of macroelement can be utilized to cause drives trace element close to root system, thus significantly improves assimilated efficiency;
Five, the inner complex of different trace element recycling atomization sparger after surge tank mixing enters compound fertilizer granulating device, can ensure between different trace element, trace element mixes with between macroelement, thus ensure Term Fertilization effect;
Six, different microelement chelate synthesizes respectively in different reactors, then controls with under meter, adds in fertilizer by required proportioning, thus ensure the handiness of trace element formula, can adapt to the different demands of different areas Different Crop.
Accompanying drawing explanation
Fig. 1 is process flow diagram of the present invention.
Embodiment
Embodiment 1
As shown in Figure 1, a kind of production method of more trace elements amino acid chelate fertilizer, comprises the following steps:
(1) for trace elements iron, manganese, zinc, copper, respectively in different reactors, the proportionally vitriol of adding technology water and this trace element, slowly add the sodium polyaspartate of corresponding amount, after dissolving completely, required pH value is adjusted to dilute sulphuric acid and ammoniacal liquor, be warming up to 70 DEG C, with the rotating speed of 500r/min, reaction 1h, obtained poly-aspartic-acid is chelating ferrous, poly-aspartic-acid Chelated Manganese, poly-aspartic-acid chelated zinc, poly-aspartic-acid chelated copper, the vitriol that wherein iron adopts is iron vitriol, sodium polyaspartate, process water, the mass ratio of iron vitriol is 1:1.5:2.05, the required pH=4.5 of reaction, the vitriol that manganese adopts is manganese sulfate monohydrate, and the mass ratio of sodium polyaspartate, process water, manganese sulfate monohydrate is 1:2:1.2, the required pH=5.5 of reaction, the vitriol that zinc adopts is respectively Zinc Sulphate Heptahydrate, and the mass ratio of sodium polyaspartate, process water, Zinc Sulphate Heptahydrate is 1:1.5:2.15, the required pH=5.0 of reaction, the vitriol that copper adopts is cupric sulfate pentahydrate, and the mass ratio of sodium polyaspartate, process water, cupric sulfate pentahydrate is 1:1.5:2, the required pH=5.0 of reaction.
(2) under under meter controls traffic conditions, poly-aspartic-acid is chelating ferrous, poly-aspartic-acid Chelated Manganese, poly-aspartic-acid chelated zinc, poly-aspartic-acid chelated copper are measured pump delivery in surge tank according to the throughput ratio of 10:6.1:6.5:1, abundant mixing, now tank medium trace element total content is 9.6%;
(3) in composite fertilizer's output be 500t/d scale under, with the speed volume pump of 24t/d by chelating ferrous for poly-aspartic-acid in surge tank, poly-aspartic-acid Chelated Manganese, poly-aspartic-acid chelated zinc, the mixture of poly-aspartic-acid chelated copper adds the ingress of compound fertilizer granulating device to, utilize atomization sparger that poly-aspartic-acid is chelating ferrous, poly-aspartic-acid Chelated Manganese, poly-aspartic-acid chelated zinc, the mixture of poly-aspartic-acid chelated copper sprays in compound fertilizer granulating device, it is made to carry out granulation with joining in advance together with the large element compound fertilizer raw material Homogeneous phase mixing in compound fertilizer granulating device, iron can be obtained in compound fertilizer granulating device exit after granulation completes, copper, manganese, zinc total content is the more trace elements amino acid chelate fertilizer of 0.5%, wherein iron, manganese, zinc, copper content is respectively 0.2%, 0.12%, 0.15%, 0.03%, the fertilizer of this proportioning is comparatively suitable for Hainan, the cash crop on the ground such as Fujian are used.
Obtained more trace elements amino acid chelate fertilizer is carried out manure trial, and particular case is as follows:
Test site: Ju Long village, Ba Suo town, Compounds in Dongfang City of Hainan Province, physical features is smooth, well-ventilated, and it is convenient to irrigate, and soil macroelement content is moderate, but medium trace element comparatively lacks.
The experiment date: in March, 2014-July
For studying thing: " black beauty " kind watermelon.
Model field, contrast field area: each 8 mu
Test process:
Process 1: apply base manure to contrast field and topdress for three times, base manure is common 15-15-15S composite fertilizer, 20 kgs/acre; Topdress for three times and be common 30-7-13S composite fertilizer, amount to 100 kgs/acre;
Process 2: apply base manure to model field and topdress for three times, base manure is the more trace elements amino acid chelate fertilizer that embodiment 1 obtains, 20 kgs/acre; Topdress for three times and be also the obtained more trace elements amino acid chelate fertilizer of embodiment 1, amount to 90 kgs/acre.
Experimental result: as shown in the table
Known by upper table, by applying the obtained more trace elements amino acid chelate fertilizer of embodiment 1, model field is than contrast every mu, field fecund 200 kilograms, and stimulation ratio reaches 11.4%, has good production-increasing function.
Embodiment 2
As shown in Figure 1, a kind of production method of more trace elements amino acid chelate fertilizer, comprises the following steps:
(1) for trace element manganese, zinc, copper, respectively in different reactors, the proportionally vitriol of adding technology water and this trace element, slowly add the sodium polyaspartate of corresponding amount, after dissolving completely, required pH value is adjusted to dilute sulphuric acid and ammoniacal liquor, be warming up to 70 DEG C, with the rotating speed of 500r/min, reaction 1h, obtained poly-aspartic-acid Chelated Manganese, poly-aspartic-acid chelated zinc, poly-aspartic-acid chelated copper, the vitriol that wherein manganese adopts is manganese sulfate monohydrate, sodium polyaspartate, process water, the mass ratio of manganese sulfate monohydrate is 1:2:1.2, the required pH=5.5 of reaction, the vitriol that zinc adopts is respectively Zinc Sulphate Heptahydrate, and the mass ratio of sodium polyaspartate, process water, Zinc Sulphate Heptahydrate is 1:1.5:2.15, the required pH=5.0 of reaction, the vitriol that copper adopts is cupric sulfate pentahydrate, and the mass ratio of sodium polyaspartate, process water, cupric sulfate pentahydrate is 1:1.5:2, the required pH=5.0 of reaction.
(2) under under meter controls traffic conditions, poly-aspartic-acid Chelated Manganese, poly-aspartic-acid chelated zinc, poly-aspartic-acid chelated copper are measured pump delivery in surge tank according to the throughput ratio of 13.5:8.7:1, abundant mixing, now tank medium trace element total content is 9.8%;
(3) in composite fertilizer's output be 500t/d scale under, with the speed volume pump of 25t/d by poly-aspartic-acid Chelated Manganese in surge tank, poly-aspartic-acid chelated zinc, the mixture of poly-aspartic-acid chelated copper adds the ingress of compound fertilizer granulating device to, utilize atomization sparger by poly-aspartic-acid Chelated Manganese, poly-aspartic-acid chelated zinc, the mixture of poly-aspartic-acid chelated copper sprays in compound fertilizer granulating device, it is made to carry out granulation with joining in advance together with the large element compound fertilizer raw material Homogeneous phase mixing in compound fertilizer granulating device, manganese can be obtained in compound fertilizer granulating device exit after granulation completes, zinc, copper total content is the more trace elements amino acid chelate fertilizer of 0.5%, wherein manganese, zinc, copper content is respectively 0.28%, 0.2%, 0.02%, the fertilizer of this proportioning is comparatively suitable for Guangdong, the cash crop of zhejiang and other places are used.
Obtained more trace elements amino acid chelate fertilizer is carried out manure trial, and particular case is as follows:
Test site: Lan Hezhen Shun He village, Panyu District of Guangzhou City, physical features is smooth, well-ventilated, and it is convenient to irrigate, but medium trace element comparatively lacks.
The experiment date: in April, 2013-December
For studying thing: muskmelon.
Model field, contrast field area: each 1 mu
Test process:
Process 1: apply base manure to contrast field and topdress totally ten three times, base manure is common 17-17-17S composite fertilizer, 50 kgs/acre; Topdress and be also common 17-17-17S composite fertilizer, amount to 800 kgs/acre;
Process 2: apply base manure to model field and topdress for 12 times, base manure is the more trace elements amino acid chelate fertilizer that embodiment 2 obtains, 50 kgs/acre; Topdress for 12 times times and be also the obtained more trace elements amino acid chelate fertilizer of embodiment 2, amount to 800 kgs/acre.
Experimental result: as shown in the table
Known by upper table, by applying the obtained more trace elements amino acid chelate fertilizer of embodiment 1, model field is than contrast every mu, field fecund 2802 kilograms, and stimulation ratio reaches 39.9%, and effect of increasing production is obvious.
Above-described embodiment is that content how of the present invention is described further, and does not lie in and limits its protection domain.Some equivalence change or modification etc. that the technician of the industry makes under the inspiration of the present embodiment, all belong within the scope of Patent right requirement of the present invention.
Claims (10)
1. a production method for more trace elements amino acid chelate fertilizer, is characterized in that: said method comprising the steps of:
(1) a certain amount of process water is added in reactor, for different trace elements, proportionally add the vitriol of this trace element of corresponding amount, be stirred to after dissolving completely, slowly add the sodium polyaspartate of corresponding amount, after dissolving completely, be adjusted to required pH value with dilute sulphuric acid and ammoniacal liquor, be warming up to 70 ° of C, with the rotating speed of 500r/min, reaction 1h, obtains the poly-aspartic-acid inner complex of each trace element;
(2) under under meter controls traffic conditions, proportionally with volume pump, the poly-aspartic-acid inner complex of each reactor medium trace element is transported in surge tank, fully mixes;
(3) according to the requirement of micro-total amount, with volume pump, the mixture of the poly-aspartic-acid inner complex of trace element each in surge tank is added in compound fertilizer granulating device, itself and the large element compound fertilizer raw material joined in compound fertilizer granulating device are in advance mixed and carries out granulation, after granulation completes, more trace elements amino acid chelate fertilizer can be obtained in compound fertilizer granulating device exit.
2. the production method of a kind of more trace elements amino acid chelate fertilizer as claimed in claim 1, it is characterized in that: trace element described in step () is iron, its vitriol adopted is iron vitriol, the mass ratio of sodium polyaspartate, process water, iron vitriol is 1:1.5:2.05, the required pH=4.5 of reaction.
3. the production method of a kind of more trace elements amino acid chelate fertilizer as claimed in claim 1, it is characterized in that: trace element described in step () is manganese, its vitriol adopted is manganese sulfate monohydrate, the mass ratio of sodium polyaspartate, process water, manganese sulfate monohydrate is 1:2:1.2, the required pH=5.5 of reaction.
4. the production method of a kind of more trace elements amino acid chelate fertilizer as claimed in claim 1, it is characterized in that: trace element described in step () is zinc, its vitriol adopted is Zinc Sulphate Heptahydrate, the mass ratio of sodium polyaspartate, process water, Zinc Sulphate Heptahydrate is 1:1.5:2.15, the required pH=5.0 of reaction.
5. the production method of a kind of more trace elements amino acid chelate fertilizer as claimed in claim 1, it is characterized in that: trace element described in step () is copper, its vitriol adopted is cupric sulfate pentahydrate, the mass ratio of sodium polyaspartate, process water, cupric sulfate pentahydrate is 1:1.5:2, the required pH=5.0 of reaction.
6. the production method of a kind of more trace elements amino acid chelate fertilizer as claimed in claim 1, it is characterized in that: in step (three), first add the mixture of the poly-aspartic-acid inner complex of each trace element to compound fertilizer granulating device portal place with volume pump, then utilize atomization sparger to be sprayed in compound fertilizer granulating device by the mixture of the poly-aspartic-acid inner complex of each trace element.
7. the production method of a kind of more trace elements amino acid chelate fertilizer as claimed in claim 1, it is characterized in that: described trace element comprises iron, manganese, zinc, copper, it plants the inner complex of gained in step (), and to be respectively poly-aspartic-acid chelating ferrous, poly-aspartic-acid Chelated Manganese, poly-aspartic-acid chelated zinc, poly-aspartic-acid chelated copper, poly-aspartic-acid is chelating ferrous, poly-aspartic-acid Chelated Manganese, poly-aspartic-acid chelated zinc, poly-aspartic-acid chelated copper is transported in surge tank with the throughput ratio of 10:6.1:6.5:1 in step (two).
8. the production method of a kind of more trace elements amino acid chelate fertilizer as claimed in claim 7, is characterized in that: the micro-amino acid chelate fertilizer produced according to above-mentioned throughput ratio is applicable to the cash crop in Hainan and Fujian.
9. the production method of a kind of more trace elements amino acid chelate fertilizer as claimed in claim 1, it is characterized in that: described trace element comprises manganese, zinc, copper, its inner complex of planting gained in step () is respectively poly-aspartic-acid Chelated Manganese, poly-aspartic-acid chelated zinc, poly-aspartic-acid chelated copper, and poly-aspartic-acid Chelated Manganese, poly-aspartic-acid chelated zinc, poly-aspartic-acid chelated copper are transported in surge tank with the throughput ratio of 13.5:8.7:1 in step (two).
10. the production method of a kind of more trace elements amino acid chelate fertilizer as claimed in claim 9, is characterized in that: the micro-amino acid chelate fertilizer produced according to above-mentioned throughput ratio is applicable to the cash crop in Guangdong and Zhejiang.
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| CN105272487A (en) * | 2015-09-29 | 2016-01-27 | 河北绿旺生态肥有限公司 | Multi-trace element controlled release fertilizer and preparation method thereof |
| CN105585342A (en) * | 2016-03-29 | 2016-05-18 | 福建中化智胜化肥有限公司 | Amino tri(methylene phosphonic acid) chelated trace-element fertilizer and preparation method and preparation equipment thereof |
| CN108870079A (en) * | 2017-05-12 | 2018-11-23 | 新疆中泰国信节能环保有限公司 | ammonium metavanadate solution automatic conveying method |
| CN116063121A (en) * | 2021-10-29 | 2023-05-05 | 沈阳化工研究院有限公司 | Environment-friendly chelated element compound fertilizer and preparation method thereof |
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Application publication date: 20150722 |