CN103274855A - Glutamic acid synergistic high-tower compound fertilizer and production method thereof - Google Patents
Glutamic acid synergistic high-tower compound fertilizer and production method thereof Download PDFInfo
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- CN103274855A CN103274855A CN2013102378513A CN201310237851A CN103274855A CN 103274855 A CN103274855 A CN 103274855A CN 2013102378513 A CN2013102378513 A CN 2013102378513A CN 201310237851 A CN201310237851 A CN 201310237851A CN 103274855 A CN103274855 A CN 103274855A
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Abstract
The invention relates to a glutamic acid synergistic high-tower compound fertilizer and a production method thereof. The method comprises the steps of glutamic acid synergist preparation, glutamic acid-urea melt liquid preparation, preprocessing of other fertilizers, pelleting and the like. The glutamic acid synergistic high-tower compound fertilizer can promote the increase of crop roots and improve the root activity, and can not only improve the utilization rate of a nitrogen fertilizer, but also can improve the utilization rates of a phosphate fertilizer and a potash fertilizer. In cultivation, the agricultural operation can be simplified; in benefit, the nutrient utilization rate can be improved by 5-10%; the compound fertilizer can improve the capacity of crops for absorbing nutrients through functions of promoting the growth of crop roots and enhancing the root activity; and nutrient loss can be reduced, secondary pollution is avoided, and the agricultural production cost is reduced. In production of compound fertilizers, the glutamic acid synergist is simple in additive process and low in cost; and in production of synergistic compound fertilizers and industrial application, the glutamic acid synergist has a wide application prospect.
Description
[technical field]
The invention belongs to the agrochemicals technical field.More specifically, the present invention relates to a kind of L-glutamic acid synergy high tower compound fertilizer, also relate to the production method of described L-glutamic acid synergy high tower compound fertilizer.
[background technology]
At present, compoundization of the fertilizer rate of China is about 32%, the about fifty-five million ton of output in kind.Studies show that in a large number the plant recovery of nutrient of existing compound fertilizer is lower, for example this season utilization ratio of nitrogen is about 30%, and phosphorus this season utilization ratio is about 25%, potassium this season utilization ratio about 45%.Therefore, how to improve the fertilizer nutrient utilization ratio is that people pay close attention to and the focus of studying all the time.High tower compound fertilizer is the exclusive fertilizer variety of China, has multiple advantages such as production capacity height, product lover, good water solubility, and the modified synergistic of high tower compound fertilizer is to improve China's utilization rate of fertilizer, the important channel that promotes the fertile industry development of China's compound.In recent years, improve utilization rate of fertilizer both at home and abroad and mainly contain following approach:
1, Envelope type compound fertilizer, used coated fertilizer mainly contains two classes, and the one, organic high molecular polymer (for example resin polyolefins), the 2nd, the inorganic materials of slightly water-soluble or microsolubility (as sulphur, ground phosphate rock, fused(calcium magnesium)phosphate etc.).
2, urea aldehyde compound fertilizer, the characteristics of utilizing urea and formaldehyde to react feed formaldehyde in urea melting liquid in the process of producing compound fertilizer, have the urea aldehyde compound fertilizer of slow-releasing by rotary drum or high tower explained hereafter.
The compound fertilizer of above-mentioned production technique is because of complex process, the production cost height, and production capacity is low, and price is also higher, in agriculture production, particularly is difficult to large scale application in field crop.
In order to overcome the prior art defective, the inventor by lot of experiments, has finished the present invention finally on the basis of summing up prior art.The present invention selects the L-glutamic acid synergistic agent for use, in the production process of compound fertilizer, it is added in the urea, forms L-glutamic acid-urea melting liquid with urea, with mixings such as the phosphorus of preheating, potash fertilizer, by the high tower cooling granulation, produces L-glutamic acid synergy high tower compound fertilizer product.
[summary of the invention]
[technical problem that will solve]
The purpose of this invention is to provide a kind of L-glutamic acid synergy high tower compound fertilizer.
Another object of the present invention provides the preparation method of described L-glutamic acid synergy high tower compound fertilizer.
[technical scheme]
The present invention is achieved through the following technical solutions.
The present invention relates to a kind of L-glutamic acid synergy high tower compound fertilizer.Described L-glutamic acid synergy high tower compound fertilizer composed as follows, in weight part:
0.10～1.80 part of L-glutamic acid synergistic agent;
40～77 parts in urea;
17～59 parts in other fertilizer;
Described other fertilizer is made up of according to its weight ratio 10～30:10～30:1～10 monoammonium phosphate or diammonium phosphate, vitriolate of tartar or Repone K, Paris white or ground dolomite.
A preferred embodiment of the invention, described L-glutamic acid synergy high tower compound fertilizer composed as follows, in weight part:
0.2～1.50 part of L-glutamic acid synergistic agent;
45～65 parts in urea;
30～53 parts in other fertilizer;
Described other fertilizer is made up of according to its weight ratio 12～25:14～24:4～8 monoammonium phosphate or diammonium phosphate, vitriolate of tartar or Repone K, Paris white or ground dolomite.
According to another kind of preferred implementation of the present invention, described L-glutamic acid synergy high tower compound fertilizer composed as follows, in weight part:
0.3～1.2 part of L-glutamic acid synergistic agent;
50～60 parts in urea;
36～47 parts in other fertilizer;
Described other fertilizer is made up of according to its weight ratio 16～20:18～20:4～6 monoammonium phosphate or diammonium phosphate, vitriolate of tartar or Repone K, Paris white or ground dolomite.
The invention still further relates to a kind of preparation method of L-glutamic acid synergy high tower compound fertilizer.This preparation method's step is as follows:
The preparation of A, L-glutamic acid synergy liquid:
Compound concentration is 10～30% monosodium glutamate solutions by weight, and this solution is L-glutamic acid synergy liquid A; Perhaps
With concentration by weight 5～15% sodium hydroxide solutions and L-glutamic acid be mixed according to weight ratio 1.8～5.5:1, or 5～15% potassium hydroxide solutions and L-glutamic acid are L-glutamic acid synergy liquid B according to weight ratio 2.5～7.6:1 resulting solution that is mixed by weight with concentration;
The preparation of B, L-glutamic acid-urea melting liquid
Utilize L-glutamic acid synergy liquid A that volume pump obtains steps A or B and urea to be added to the urea melting groove that is arranged on the conventional urea production process prilling tower according to its weight ratio 1～6:40～77, in 95～125 ℃ of abundant fusions down of temperature, obtain a kind of L-glutamic acid-urea melting liquid;
C, other fertilizer pre-treatment
Diammonium phosphate or monoammonium phosphate, vitriolate of tartar or Repone K, calcium carbonate or rhombspar are pulverized respectively, be preheating to 100～120 ℃ of temperature again, be added to respectively in the described urea melting groove according to its weight ratio 10～30:10～30:1～10 then;
D, granulation
Allow L-glutamic acid-urea melting liquid of step B and the pre-treatment fertilizer of step C in described urea melting groove, carry out congruent melting, the eutectic that obtains is by the rotary nozzle ejection on described prilling tower top, in its prilling tower in dropping process the naturally cooling granulating, at the bottom of its prilling tower, collect, screening obtains described L-glutamic acid synergy high tower compound fertilizer.
A preferred embodiment of the invention, in the existing urea production technique, weight ratio 1～6:40～77 according to L-glutamic acid synergy liquid A or B and urea melting liquid directly are added to L-glutamic acid synergy liquid A or B in the urea melting liquid, obtain described L-glutamic acid-urea melting liquid.
According to another kind of preferred implementation of the present invention, the concentration of sodium glutamate of L-glutamic acid synergy liquid A is by weight 14～25%; L-glutamic acid synergy liquid B is mixed according to weight ratio 2.8～4.5:1 by described sodium hydroxide solution and L-glutamic acid, or be mixed according to weight ratio 3.8～6.2:1 by described potassium hydroxide solution and L-glutamic acid.
According to another kind of preferred implementation of the present invention, the weight ratio of described L-glutamic acid synergy liquid A or B and urea is 2～5:45～65.
According to another kind of preferred implementation of the present invention, the weight ratio of described L-glutamic acid synergy liquid A or B and urea is 3～4:50～60.
According to another kind of preferred implementation of the present invention, the smashing fineness of monoammonium phosphate or diammonium phosphate, vitriolate of tartar or Repone K, calcium carbonate or rhombspar is more than 30 orders.
According to another kind of preferred implementation of the present invention, the granularity of described L-glutamic acid synergy high tower compound fertilizer is 1.0mm～5.6mm.
Below the present invention will be described in more detail.
The present invention relates to a kind of L-glutamic acid synergy high tower composite fertilizer.
The present invention mainly is to be that feedstock production goes out the L-glutamic acid synergy liquid with L-glutamic acid or Sodium Glutamate.
In the present invention, select for use L-glutamic acid as fertilizer sources nutrient synergistic agent and ammonium ion stablizer to produce L-glutamic acid synergy compound fertilizer, L-glutamic acid is the highest amino acid of plant materials intensive amount, simultaneously, L-glutamic acid is the synthetic precursor of multiple amino acids in the plant materials, plays crucial effects in the growth and development of plant process.L-glutamic acid can form glutamine in plant materials, store nitrogen and can eliminate the toxic action that produces because of the ammonia excessive concentration.
The present invention utilizes amino acid to have the characteristics of ammonification volatilization and the drip washing loss of reduction nitrogen, with its as fertilizer sources synergistic agent and ammonium ion stablizer, to reach the purpose that improves nitrogen use efficiency.And amino acid is as the natural bioactive organic substance, not only has the growth of the crop root of promotion, improves the root system vigor, strengthens crop root to the characteristics of nutrient absorbing ability; But also can adsorb to a certain extent, fixing ammonium ion, reduce ammonia loss by volatilization, thereby improved utilization rate of fertilizer.
In addition, amino acid can also play drought resisting, anti-saline and alkaline infiltration, cold-resistant, germicidal action, also have improve the soil, the effect of culture fertility, raising product quality, these characteristics and advantage are that nutrient stablizers such as nitrification inhibitor and urease inhibitor do not have.
Therefore, product of the present invention is a kind of polyfunctional new and effective fertilizer, it is identical with conventional fertilizer in operation technique, using method is simple and various, can be used for base manure, topdress, also be applicable to drip irrigation system, but also foliage-spray, and this also is characteristics and advantage that other kind slow release fertilizer does not possess.
According to the present invention, a kind of L-glutamic acid synergy high tower compound fertilizer composed as follows, in weight part:
0.10～1.80 part of L-glutamic acid synergistic agent;
40～77 parts in urea;
17～59 parts in other fertilizer;
Described other fertilizer is made up of according to its weight ratio 10～30:10～30:1～10 monoammonium phosphate or diammonium phosphate, vitriolate of tartar or Repone K, Paris white or ground dolomite.
In the present invention, described L-glutamic acid synergistic agent should be appreciated that and is, adopts the L-glutamic acid synergy liquid A of the inventive method preparation or B to be evaporated to the resulting solids in dried back under the drying temperature at its drying process in producing the urea technique process.
Described L-glutamic acid synergy liquid A or B will be described in detail in the L-glutamic acid synergy high tower production of compound fertilizer technology below.
In the present invention, L-glutamic acid synergistic agent content be adopt (Chen Jingyong, Peng Qijun, " comparison of ultraviolet-visible light optical spectroscopy quantitative assay L-glutamic acid ", " spectrographic laboratory ", 2008,25(3): 394-397) method is measured.
According to the present invention, in the fat material of L-glutamic acid synergy high tower compound of the present invention, described other fertilizer is 17～59 weight parts, and is if the amount of L-glutamic acid synergistic agent is lower than 0.10 weight part, then not remarkable to the synergistic effect of the fat material of high tower compound; If the amount of L-glutamic acid synergistic agent is higher than 1.80, then can reduce the nutrient content of high tower compound fertilizer, increase production cost simultaneously; Therefore, the amount of L-glutamic acid synergistic agent is that 0.10～1.80 weight part is appropriate.
Similarly, in the fat material of L-glutamic acid synergy high tower compound of the present invention, described other fertilizer is 17～59 weight parts, if urea content is during less than 40 weight parts, the eutectic that urea and phosphorus, potassic fertilizer etc. form in its production technique is than thickness, be difficult to by the shower nozzle ejection, and easily stop up shower nozzle; If urea content is greater than 77 weight parts, phosphorus in the L-glutamic acid synergy high tower compound fertilizer of the present invention, potassium content can be on the low side, influences its effect; Therefore, when described other fertilizer was 40～77 weight parts, described urea was that 40～77 weight parts are suitable.
Preferably, described L-glutamic acid synergy high tower compound fertilizer composed as follows, in weight part:
0.20～1.50 part of L-glutamic acid synergistic agent;
45～65 parts in urea;
30～53 parts in other fertilizer;
Described other fertilizer is made up of according to its weight ratio 12～25:14～24:4～8 monoammonium phosphate or diammonium phosphate, vitriolate of tartar or Repone K, Paris white or ground dolomite.
More preferably, described L-glutamic acid synergy high tower compound fertilizer composed as follows, in weight part:
0.30～1.20 part of L-glutamic acid synergistic agent;
50～60 parts in urea;
36～47 parts in other fertilizer;
Described other fertilizer is made up of according to its weight ratio 16～20:18～20:4～6 monoammonium phosphate or diammonium phosphate, vitriolate of tartar or Repone K, Paris white or ground dolomite.
The invention still further relates to a kind of preparation method of L-glutamic acid synergy high tower compound fertilizer, concrete production method is referring to accompanying drawing 1.
This preparation method's step is as follows:
The preparation of A, L-glutamic acid synergy liquid:
Compound concentration is 10～30% monosodium glutamate solutions by weight, and this solution is L-glutamic acid synergy liquid A; Perhaps
With concentration by weight 5～15% sodium hydroxide solutions and L-glutamic acid be mixed according to weight ratio 1.8～5.5:1, or 5～15% potassium hydroxide solutions and L-glutamic acid are L-glutamic acid synergy liquid B according to weight ratio 2.5～7.6:1 resulting solution that is mixed by weight with concentration;
The compound method that the present invention adopts or compounding method are compound method or the compounding methods that adopts usually in chemical technology field.
The preparation of B, L-glutamic acid-urea melting liquid
Utilize L-glutamic acid synergy liquid A that volume pump obtains steps A or B and urea to be added to the urea melting groove that is arranged on the conventional urea production process prilling tower according to its weight ratio 1～6:40～77, in 95～125 ℃ of abundant fusions down of temperature, obtain a kind of L-glutamic acid-urea melting liquid;
Adopt the existing urea production technique if implement the present invention, can be according to weight ratio 1～6:40～77 of L-glutamic acid synergistic agent A or B and urea melting liquid, L-glutamic acid synergistic agent A or B directly are added in the urea melting liquid, also obtain described L-glutamic acid-urea melting liquid.
Preferably, the weight ratio 2～5: 45～65 of L-glutamic acid synergy liquid of the present invention and urea.More preferably, the weight ratio 3～4: 50～60 of L-glutamic acid synergistic agent of the present invention and urea.
In the present invention, described volume pump is that those skilled in the art know volume pump, and for example the volume pump sold with trade(brand)name JYM-I volume pump, JYM-II volume pump, JJM-II plunger type metering pump of the limited public affairs of Changzhou howl source machinery, De Pamu (Hangzhou) pump industry Science and Technology Ltd. are with trade(brand)name 2DP[M] volume pump sold of ZA series volume pump, go up the volume pump that marine triumphant pump industry Manufacturing Co., Ltd sells with the metering of trade(brand)name JYD Series Hydraulic diaphragm type.
Among the present invention; described urea melting groove is the urea melting groove that those skilled in the art know, and for example the urea melting groove sold with trade(brand)name urea melting groove of Longchang, Hengshui granulation of fertilizer machinery company limited, Zhengzhou City one sincere machinofacture company limited are with the urea melting groove of trade(brand)name urea melting system sales, the Chuzhou City East China mechanical industry limited liability company urea melting jar with the sale of trade(brand)name urea melting jar.
C, other fertilizer pre-treatment
Diammonium phosphate or monoammonium phosphate, vitriolate of tartar or Repone K, calcium carbonate or ground dolomite are pulverized respectively, be preheating to 100～120 ℃ of temperature again, be added to respectively in the described urea melting groove according to its weight ratio 10～30:10～30:1～10 then.
In the present invention, employed equipment is normally used equipment in the art during pulverizing.
Usually, monoammonium phosphate or diammonium phosphate, vitriolate of tartar or Repone K, calcium carbonate or ground dolomite being broken to fineness is more than 30 orders.
In actual production, the amount of diammonium phosphate or monoammonium phosphate, vitriolate of tartar or Repone K, calcium carbonate or rhombspar can require to adjust according to fertilizer formula; Its fertilizer variety also can be according to actual needs with require suitably to adjust, but in any case, the nutrient content of L-glutamic acid synergy high tower compound fertilizer of the present invention need meet state specified standards.
Preferably, described other fertilizer is made up of according to its weight ratio 12～25:14～24:4～8 monoammonium phosphate or diammonium phosphate, vitriolate of tartar or Repone K, Paris white or ground dolomite.
More preferably, described other fertilizer is made up of according to its weight ratio 16～20:18～20:4～6 monoammonium phosphate or diammonium phosphate, vitriolate of tartar or Repone K, Paris white or ground dolomite.
D, granulation
Allow L-glutamic acid-urea melting liquid of step B and the pre-treatment fertilizer of step C in described urea melting groove, carry out congruent melting, the eutectic that obtains is by the rotary nozzle ejection on described prilling tower top, in its prilling tower in dropping process the naturally cooling granulating, at the bottom of its prilling tower, collect, screening obtains described L-glutamic acid synergy high tower compound fertilizer.
The present invention can implement in conventional urea production process, and the present invention does not have special requirement to its production unit.
Among the present invention, described rotary nozzle is the rotary nozzle that those skilled in the art know, and for example the Beijing Space Petrochemical Technology Equipment Engineering Co., Ltd is with the shower nozzle of trade(brand)name LP type urea granulation sprayer sale, the shower nozzle that Wenling, Zhejiang global machine granulation splashing device company limited sells with the isobaric urea granulation sprayer of the novel buffering internal rotation of trade(brand)name ZL-H.
The trommel screen that the present invention uses is the screening plant that those skilled in the art know, and for example Shenyang section Xiang power environment protection equipment company limited is with the trommel screen of trade(brand)name GT-series trommel screen sale, the trommel screen that Wuxi City duplex engineering conveyor tool company limited sells with trade(brand)name GTS series trommel screen, the trommel screen that machinery company limited in Shijiazhuang City Yongxing sells with trade(brand)name GTS type trommel screen.
Available nutrient in the L-glutamic acid synergy high tower compound fertilizer of employing the inventive method preparation is to adopt standard method GB 8572-88 to measure.
L-glutamic acid synergy high tower compound fertilizer production method of the present invention has following characteristics: the L-glutamic acid source is wide, cheap, uses safety; On the basis that does not change existing urea spray granulating production technique, just can production synergy high tower compound fertilizer by adding equipment such as simple volume pump, this production technique is simple, and production capacity height, cost are low, and environmental friendliness.In order to accelerate urea melting and to reduce biuret, often in urea, add a spot of water, in the present invention, can in the production process of high tower compound fertilizer, add a spot of water to substitute by adding synergistic agent.
The present invention utilizes L-glutamic acid to produce L-glutamic acid synergy high tower compound fertilizer product, and L-glutamic acid synergistic agent addition is low, and is efficient, to the not influence of nutrient content of fertilizer; L-glutamic acid is the highest amino acid of plant materials intensive amount, and simultaneously, L-glutamic acid is the synthetic precursor of multiple amino acids in the plant materials, plays crucial effects in the growth and development of plant process.L-glutamic acid can form glutamine in plant materials, store nitrogen and can eliminate the toxic action that produces because of the ammonia excessive concentration.The carboxyl that contains in the L-glutamic acid, amino can promote the crop root growth to a certain extent, improve the root system vigor; Improve the storage form of nitrogen in plant materials; Improve quality of agricultural product and output.Thereby this synergy compound fertilizer product improves the storage form of nitrogen in the crop plant body by the promoter action of L-glutamic acid synergistic agent to plant growth, reduces ammonia to the harm of crop, obviously improves plant recovery of nutrient.
Use such as L-glutamic acid synergy compound fertilizer of the present invention can be used as base manure, topdress.
The usage quantity of L-glutamic acid synergy compound fertilizer of the present invention needs to determine according to factors such as soil regime, crop varieties, crop growth phase, crop alimentary situations.
Use such as L-glutamic acid synergy high tower compound fertilizer of the present invention can be used as base manure, topdress.
The usage quantity of L-glutamic acid synergy high tower compound fertilizer of the present invention needs to determine according to factors such as soil regime, crop varieties, crop growth phase, crop alimentary situations.
[beneficial effect]
It is as follows that the present invention has beneficial effect: preparation L-glutamic acid synergistic agent, the high tower prilling technology of recycling compound fertilizer add synergy liquid in the granulation material of compound fertilizer and go, and produce L-glutamic acid synergy high tower composite fertilizer.In farming, can simplify agricultural operation; On benefit, can improve plant recovery of nutrient (5～10 percentage points); This product can strengthen the effect of root system vigor aspect by promoting the crop root growth, improves the ability that crop absorbs nutrient; Can reduce nutrient loss, avoid secondary pollution, reduce agriculture production cost, and it is wide to have raw material sources, transports, uses conveniently, is beneficial to characteristics such as mechanical work.
The adding technology of L-glutamic acid synergistic agent of the present invention in the high tower production of compound fertilizer is simple, and cost is low, has a extensive future in synergy production of compound fertilizer and Industry Promotion.
[description of drawings]
Fig. 1 is L-glutamic acid synergy high tower production of compound fertilizer schematic flow sheet of the present invention.
Among the figure:
1-Sodium Glutamate (L-glutamic acid), 2-water (sodium hydroxide or potassium hydroxide solution), 3-L-glutamic acid synergistic agent, 4-urea melting jar, other fertilizer of 5-, 6-rotary nozzle, the high tower cooler of 7-, 8-product.
[embodiment]
Can understand the present invention better by following embodiment.
Embodiment 1: the production of L-glutamic acid synergy high tower compound fertilizer of the present invention
The implementation step of this embodiment is as follows:
The preparation of A, L-glutamic acid synergy liquid:
Compound concentration is 20% monosodium glutamate solution by weight, and this solution is L-glutamic acid synergy liquid A;
The preparation of B, L-glutamic acid-urea melting liquid
The volume pump that uses machinery limited public affairs in Changzhou howl source to sell with trade(brand)name JYM-I volume pump, L-glutamic acid synergistic agent A and urea that steps A is obtained are added to the urea melting groove that is arranged on the conventional urea production process prilling tower according to its weight ratio 2:65, in 125 ℃ of abundant fusions down of temperature, obtain a kind of L-glutamic acid-urea melting liquid;
C, other fertilizer pre-treatment
Diammonium phosphate, vitriolate of tartar and Paris white are crushed to respectively more than fineness 30 orders, are preheating to 106 ℃ of temperature again, be added to respectively in the described urea melting groove according to its weight ratio 14:30:6 then;
D, granulation
Allow L-glutamic acid-urea melting liquid of step B and the pre-treatment fertilizer of step C in described urea melting groove, carry out congruent melting, the eutectic that obtains is by the rotary nozzle ejection on described prilling tower top, in its prilling tower in dropping process the naturally cooling granulating, the L-glutamic acid synergy high tower compound fertilizer that at the bottom of its prilling tower, collect, screening obtains size 1.0mm～3.75mm.
L-glutamic acid synergistic agent content in this L-glutamic acid synergy high tower compound fertilizer product is to adopt the method for describing in this specification sheets to measure, and the nutrient content of this L-glutamic acid synergy high tower compound fertilizer is to adopt standard method GB 8572-88 to measure.Its measurement result is as follows in weight percent:
Nitrogen content %=26.5% in the compound fertilizer; P
2O
5Content=5.6%; K
2O content=15.6%; L-glutamic acid synergistic agent content %=0.40%.
Embodiment 2: the production of L-glutamic acid synergy high tower compound fertilizer of the present invention
The implementation step of this embodiment is as follows:
The preparation of A, L-glutamic acid synergy liquid:
With concentration by weight 10% sodium hydroxide solution and L-glutamic acid be mixed according to weight ratio 1.8:1, the solution that obtains is L-glutamic acid synergy liquid B;
The preparation of B, L-glutamic acid-urea melting liquid
The volume pump that uses machinery limited public affairs in Changzhou howl source to sell with trade(brand)name JYM-II volume pump, L-glutamic acid synergistic agent B and urea that steps A is obtained are added to the urea melting groove that is arranged on the conventional urea production process prilling tower according to its weight ratio 5:50, in 115 ℃ of abundant fusions down of temperature, obtain a kind of L-glutamic acid-urea melting liquid;
C, other fertilizer pre-treatment
Monoammonium phosphate, Repone K and rhombspar are crushed to respectively more than fineness 30 orders, are preheating to 115 ℃ of temperature again, be added to respectively in the described urea melting groove according to its weight ratio 18:24:8 then;
D, granulation
Allow L-glutamic acid-urea melting liquid of step B and the pre-treatment fertilizer of step C in described urea melting groove, carry out congruent melting, the eutectic that obtains is by the rotary nozzle ejection on described prilling tower top, in its prilling tower in dropping process the naturally cooling granulating, the L-glutamic acid synergy high tower compound fertilizer that at the bottom of its prilling tower, collect, screening obtains size 3.75mm～5.6mm.
L-glutamic acid synergistic agent content in this L-glutamic acid synergy high tower compound fertilizer product is to adopt the method for describing in this specification sheets to measure, and the nutrient content of this L-glutamic acid synergy high tower compound fertilizer is to adopt standard method GB 8572-88 to measure.Its measurement result is as follows in weight percent:
Nitrogen content %=23.6% in the compound fertilizer; P
2O
5Content=8.26%; K
2O content=14.28%; L-glutamic acid synergistic agent content %=0.52%.
Embodiment 3: the production of L-glutamic acid synergy high tower compound fertilizer of the present invention
The implementation step of this embodiment is as follows:
The preparation of A, L-glutamic acid synergy liquid:
Compound concentration is 10% monosodium glutamate solution by weight, and this solution is L-glutamic acid synergy liquid A;
The preparation of B, L-glutamic acid-urea melting liquid
The volume pump that the volume pump that uses machinery limited public affairs in Changzhou howl source to sell with trade(brand)name JJM-II plunger type metering pump is sold, L-glutamic acid synergistic agent A and urea that steps A is obtained are added to the urea melting groove that is arranged on the conventional urea production process prilling tower according to its weight ratio 3:70, in 105 ℃ of abundant fusions down of temperature, obtain a kind of L-glutamic acid-urea melting liquid;
C, other fertilizer pre-treatment
Diammonium phosphate, Repone K and calcium carbonate are crushed to respectively more than fineness 30 orders, are preheating to 100 ℃ of temperature again, be added to respectively in the described urea melting groove according to its weight ratio 10:28:1 then;
D, granulation
Allow L-glutamic acid-urea melting liquid of step B and the pre-treatment fertilizer of step C in described urea melting groove, carry out congruent melting, the eutectic that obtains is by the rotary nozzle ejection on described prilling tower top, in its prilling tower in dropping process the naturally cooling granulating, the L-glutamic acid synergy high tower compound fertilizer that at the bottom of its prilling tower, collect, screening obtains size 1.0mm～3.75mm.
L-glutamic acid synergistic agent content in this L-glutamic acid synergy high tower compound fertilizer product is to adopt the method for describing in this specification sheets to measure, and the nutrient content of this L-glutamic acid synergy high tower compound fertilizer is to adopt standard method GB 8572-88 to measure.Its measurement result is as follows in weight percent:
Nitrogen content %=33.2% in the compound fertilizer; P
2O
5Content=4.6%; K
2O content=16.57%; L-glutamic acid synergistic agent content %=0.30%.
Embodiment 4: the production of L-glutamic acid synergy high tower compound fertilizer of the present invention
The implementation step of this embodiment is as follows:
The preparation of A, L-glutamic acid synergy liquid:
With concentration by weight 5% sodium hydroxide solution and L-glutamic acid be mixed according to weight ratio 5.5:1, resulting solution is L-glutamic acid synergy liquid B;
The preparation of B, L-glutamic acid-urea melting liquid
Use De Pamu (Hangzhou) pump industry Science and Technology Ltd. with trade(brand)name 2DP[M] volume pump sold of ZA series volume pump, L-glutamic acid synergistic agent B and urea that steps A is obtained are added to the urea melting groove that is arranged on the conventional urea production process prilling tower according to its weight ratio 6:40, in 95 ℃ of abundant fusions down of temperature, obtain a kind of L-glutamic acid-urea melting liquid;
C, other fertilizer pre-treatment
Monoammonium phosphate, Repone K, Paris white are crushed to respectively more than fineness 30 orders, are preheating to 120 ℃ of temperature again, be added to respectively in the described urea melting groove according to its weight ratio 30:10:10 then;
D, granulation
Allow L-glutamic acid-urea melting liquid of step B and the pre-treatment fertilizer of step C in described urea melting groove, carry out congruent melting, the eutectic that obtains is by the rotary nozzle ejection on described prilling tower top, in its prilling tower in dropping process the naturally cooling granulating, the L-glutamic acid synergy high tower compound fertilizer that at the bottom of its prilling tower, collect, screening obtains size 2.25mm～5.6mm.
L-glutamic acid synergistic agent content in this L-glutamic acid synergy high tower compound fertilizer product is to adopt the method for describing in this specification sheets to measure, and the nutrient content of this L-glutamic acid synergy high tower compound fertilizer is to adopt standard method GB 8572-88 to measure.Its measurement result is as follows in weight percent:
Nitrogen content %=19.8% in the compound fertilizer; P
2O
5Content=13.76%; K
2O content=4.95%; L-glutamic acid synergistic agent content %=0.90%.
Embodiment 5: the production of L-glutamic acid synergy high tower compound fertilizer of the present invention
The implementation step of this embodiment is as follows:
The preparation of A, L-glutamic acid synergy liquid:
With concentration by weight 5% potassium hydroxide solution and L-glutamic acid be mixed according to weight ratio 4.2:1, resulting solution is L-glutamic acid synergy liquid B;
The preparation of B, L-glutamic acid-urea melting liquid
The volume pump that marine triumphant pump industry Manufacturing Co., Ltd sells with trade(brand)name JYD Series Hydraulic diaphragm metering pump in the use, L-glutamic acid synergistic agent B and urea that steps A is obtained are added to the urea melting groove that is arranged on the conventional urea production process prilling tower according to its weight ratio 6:77, in 125 ℃ of abundant fusions down of temperature, obtain a kind of L-glutamic acid-urea melting liquid;
C, other fertilizer pre-treatment
Monoammonium phosphate, vitriolate of tartar, ground dolomite are crushed to respectively more than fineness 30 orders, are preheating to 106 ℃ of temperature again, be added to respectively in the described urea melting groove according to its weight ratio 14:18:4 then;
D, granulation
Allow L-glutamic acid-urea melting liquid of step B and the pre-treatment fertilizer of step C in described urea melting groove, carry out congruent melting, the eutectic that obtains is by the rotary nozzle ejection on described prilling tower top, in its prilling tower in dropping process the naturally cooling granulating, the L-glutamic acid synergy high tower compound fertilizer that at the bottom of its prilling tower, collect, screening obtains size 2.25～4.75cm.
L-glutamic acid synergistic agent content in this L-glutamic acid synergy high tower compound fertilizer product is to adopt the method for describing in this specification sheets to measure, and the nutrient content of this L-glutamic acid synergy high tower compound fertilizer is to adopt standard method GB 8572-88 to measure.Its measurement result is as follows in weight percent:
Nitrogen content %=36.8% in the compound fertilizer; P
2O
5Content=6.25%; K
2O content=8.95%; L-glutamic acid synergistic agent content %=1.15%.
Embodiment 6: the production of L-glutamic acid synergy high tower compound fertilizer of the present invention
The implementation step of this embodiment is as follows:
The preparation of A, L-glutamic acid synergy liquid:
Compound concentration is 30% monosodium glutamate solution by weight, and this solution is L-glutamic acid synergy liquid A;
The preparation of B, L-glutamic acid-urea melting liquid
Use De Pamu (Hangzhou) pump industry Science and Technology Ltd. with trade(brand)name 2DP[M] volume pump sold of ZA series volume pump, L-glutamic acid synergistic agent A and urea that steps A is obtained are added to the urea melting groove that is arranged on the conventional urea production process prilling tower according to its weight ratio 2:45, in 115 ℃ of abundant fusions down of temperature, obtain a kind of L-glutamic acid-urea melting liquid;
C, other fertilizer pre-treatment
Diammonium phosphate, Repone K, Paris white are crushed to respectively more than fineness 30 orders, are preheating to 115 ℃ of temperature again, be added to respectively in the described urea melting groove according to its weight ratio 18:14:6 then;
D, granulation
Allow L-glutamic acid-urea melting liquid of step B and the pre-treatment fertilizer of step C in described urea melting groove, carry out congruent melting, the eutectic that obtains is by the rotary nozzle ejection on described prilling tower top, in its prilling tower in dropping process the naturally cooling granulating, the L-glutamic acid synergy high tower compound fertilizer that at the bottom of its prilling tower, collect, screening obtains size 2.25mm～5.6mm.
L-glutamic acid synergistic agent content in this L-glutamic acid synergy high tower compound fertilizer product is to adopt the method for describing in this specification sheets to measure, and the nutrient content of this L-glutamic acid synergy high tower compound fertilizer is to adopt standard method GB 8572-88 to measure.Its measurement result is as follows in weight percent:
Nitrogen content %=22.3% in the compound fertilizer; P
2O
5Content=8.24%; K
2O content=9.31%; L-glutamic acid synergistic agent content %=0.59%.
Embodiment 7: the production of L-glutamic acid synergy high tower compound fertilizer of the present invention
The implementation step of this embodiment is as follows:
The preparation of A, L-glutamic acid synergy liquid:
With concentration by weight 15% potassium hydroxide solution and L-glutamic acid be mixed according to weight ratio 2.5:1, resulting solution is L-glutamic acid synergy liquid B;
The preparation of B, L-glutamic acid-urea melting liquid
The volume pump that uses machinery limited public affairs in Changzhou howl source to sell with trade(brand)name JYM-I volume pump, L-glutamic acid synergistic agent B and urea that steps A is obtained are added to the urea melting groove that is arranged on the conventional urea production process prilling tower according to its weight ratio 3:65, in 105 ℃ of abundant fusions down of temperature, obtain a kind of L-glutamic acid-urea melting liquid;
C, other fertilizer pre-treatment
Monoammonium phosphate, vitriolate of tartar, ground dolomite are crushed to respectively more than fineness 30 orders, are preheating to 115 ℃ of temperature again, be added to respectively in the described urea melting groove according to its weight ratio 24:14:8 then;
D, granulation
Allow L-glutamic acid-urea melting liquid of step B and the pre-treatment fertilizer of step C in described urea melting groove, carry out congruent melting, the eutectic that obtains is by the rotary nozzle ejection on described prilling tower top, in its prilling tower in dropping process the naturally cooling granulating, the L-glutamic acid synergy high tower compound fertilizer that at the bottom of its prilling tower, collect, screening obtains size 1.0mm～4.75mm.
L-glutamic acid synergistic agent content in this L-glutamic acid synergy high tower compound fertilizer product is to adopt the method for describing in this specification sheets to measure, and the nutrient content of this L-glutamic acid synergy high tower compound fertilizer is to adopt standard method GB 8572-88 to measure.Its measurement result is as follows in weight percent:
Nitrogen content %=30.7% in the compound fertilizer; P
2O
5Content=10.8%; K
2O content=3.76%; L-glutamic acid synergistic agent content %=0.88%.
Embodiment 8: the production of L-glutamic acid synergy high tower compound fertilizer of the present invention
The implementation step of this embodiment is as follows:
The preparation of A, L-glutamic acid synergy liquid:
With concentration by weight 10% potassium hydroxide solution and L-glutamic acid be mixed according to weight ratio 7.6:1, resulting solution is L-glutamic acid synergy liquid B;
The preparation of B, L-glutamic acid-urea melting liquid
Use De Pamu (Hangzhou) pump industry Science and Technology Ltd. with trade(brand)name 2DP[M] volume pump sold of ZA series volume pump, L-glutamic acid synergistic agent B and urea that steps A is obtained are added to the urea melting groove that is arranged on the conventional urea production process prilling tower according to its weight ratio 3:50, in 95 ℃ of abundant fusions down of temperature, obtain a kind of L-glutamic acid-urea melting liquid;
C, other fertilizer pre-treatment
Diammonium phosphate, Repone K, ground dolomite are crushed to respectively more than fineness 30 orders, are preheating to 100 ℃ of temperature again, be added to respectively in the described urea melting groove according to its weight ratio 28:10:1 then;
D, granulation
Allow L-glutamic acid-urea melting liquid of step B and the pre-treatment fertilizer of step C in described urea melting groove, carry out congruent melting, the eutectic that obtains is by the rotary nozzle ejection on described prilling tower top, in its prilling tower in dropping process the naturally cooling granulating, the L-glutamic acid synergy high tower compound fertilizer that at the bottom of its prilling tower, collect, screening obtains size 3.75mm～5.6mm.
L-glutamic acid synergistic agent content in this L-glutamic acid synergy high tower compound fertilizer product is to adopt the method for describing in this specification sheets to measure, and the nutrient content of this L-glutamic acid synergy high tower compound fertilizer is to adopt standard method GB 8572-88 to measure.Its measurement result is as follows in weight percent:
Nitrogen content %=27.1% in the compound fertilizer; P
2O
5Content=12.7%; K
2O content=5.8%; L-glutamic acid synergistic agent content %=0.36%.
Embodiment 9: the production of L-glutamic acid synergy high tower compound fertilizer of the present invention
The implementation step of this embodiment is as follows:
The preparation of A, L-glutamic acid synergy liquid:
With concentration by weight 15% sodium hydroxide solution and L-glutamic acid be mixed according to weight ratio 3.0:1, resulting solution is L-glutamic acid synergy liquid B;
The preparation of B, L-glutamic acid-urea melting liquid
The volume pump that marine triumphant pump industry Manufacturing Co., Ltd sells with the metering of trade(brand)name JYD Series Hydraulic diaphragm type in the use, L-glutamic acid synergistic agent B and urea that steps A is obtained are added to the urea melting groove that is arranged on the conventional urea production process prilling tower according to its weight ratio 4:60, in 115 ℃ of abundant fusions down of temperature, obtain a kind of L-glutamic acid-urea melting liquid;
C, other fertilizer pre-treatment
Diammonium phosphate, Repone K, Paris white stone are crushed to respectively more than fineness 30 orders, are preheating to 120 ℃ of temperature again, be added to respectively in the described urea melting groove according to its weight ratio 18:18:4 then;
D, granulation
Allow L-glutamic acid-urea melting liquid of step B and the pre-treatment fertilizer of step C in described urea melting groove, carry out congruent melting, the eutectic that obtains is by the rotary nozzle ejection on described prilling tower top, in its prilling tower in dropping process the naturally cooling granulating, the L-glutamic acid synergy high tower compound fertilizer that at the bottom of its prilling tower, collect, screening obtains size 1.0mm～3.75mm.
L-glutamic acid synergistic agent content in this L-glutamic acid synergy high tower compound fertilizer product is to adopt the method for describing in this specification sheets to measure, and the nutrient content of this L-glutamic acid synergy high tower compound fertilizer is to adopt standard method GB 8572-88 to measure.Its measurement result is as follows in weight percent:
Nitrogen content %=28.2% in the compound fertilizer; P
2O
5Content=8.24%; K
2O content=10.4%; L-glutamic acid synergistic agent content %=1.2%.
Fertilizer test embodiment
Utilize field test to carry out the compliance test result of fertilizer of the present invention, test-results shows that under the condition that waits the nitrogen nutrient amount, product of the present invention can obviously improve crop yield, has improved utilization rate of fertilizer, is a kind of environmental friendly fertilizer.
Compliance test result test processing setting and the result of product are as follows:
The field test of fertilizer efficiency checking of the present invention is carried out in Yucheng, Shandong, compares test under the condition that waits nutrient to drop into, and test arranges:
(1) CK: be contrast, use the conventional fertilizer application mode of producing, (middle peasant Shun sky chemical fertilizer company limited produces, N: P with common compound fertilizer
2O
5: K
2O=28: 6: 6) 642.9kg/hm
2, to make base manure behind 61.8kg calcium superphosphate and the 108.8kg Repone K mixing disposable employed.
(2) GF: the fertilizer product 692.3kg/hm that uses the embodiment of the invention 2
2, it is disposable employed to make base manure.The experimental plot area is 100m
2, each is handled 3 times and repeats random alignment.Other field management is with local farmland.The ripe results of corn back meter produces.
The results are shown in Table 1 for this fertilizer test.
Table 1: L-glutamic acid synergy high tower compound fertilizer is to the influence of corn yield and utilization rate of nitrogen fertilizer
Above-mentioned test-results shows: waiting nutrient to drop into, under the condition of single fertilization, fertilizer product of the present invention is obvious to the effect that increases production and improves productivity of corn, fertile handle (CK) increases production 6.45% than common compound, the apparent utilization ratio of nitrogenous fertilizer, phosphate fertilizer and potash fertilizer improves 5.49,3.3 and 6.54 percentage points respectively, comprehensive 15.33 percentage points of the utilization rate of fertilizer that improve are that a kind of effect of increasing production is obvious, fertile efficient, the eco-friendly fertilizer of joint.
This shows, compare with common compound fertilizer that L-glutamic acid synergy high tower composite fertilizer of the present invention has good effect of increasing production, plant recovery of nutrient height, do not have characteristics such as secondary processing, environmental friendliness substantially.Have simultaneously that production technology is simple, cost is low, raw material sources are wide, easy handling, be beneficial to advantages such as Industry Promotion.
Claims (10)
1. L-glutamic acid synergy high tower compound fertilizer is characterized in that it is composed as follows:
0.10～1.80 part of L-glutamic acid synergistic agent;
40～77 parts in urea;
17～59 parts in other fertilizer;
Described other fertilizer is made up of according to its weight ratio 10～30:10～30:1～10 monoammonium phosphate or diammonium phosphate, vitriolate of tartar or Repone K, Paris white or ground dolomite.
2. L-glutamic acid synergy high tower compound fertilizer according to claim 1 is characterized in that it is composed as follows, in weight part:
0.20～1.5 part of L-glutamic acid synergistic agent;
45～65 parts in urea;
30～53 parts in other fertilizer;
Described other fertilizer is made up of according to its weight ratio 12～25:14～24:4～8 monoammonium phosphate or diammonium phosphate, vitriolate of tartar or Repone K, Paris white or ground dolomite.
3. L-glutamic acid synergy high tower compound fertilizer according to claim 1 is characterized in that it is composed as follows, in weight part:
0.3～1.20 part of L-glutamic acid synergistic agent;
50～60 parts in urea;
36～47 parts in other fertilizer;
Described other fertilizer is made up of according to its weight ratio 16～20:18～20:4～6 monoammonium phosphate or diammonium phosphate, vitriolate of tartar or Repone K, Paris white or ground dolomite.
4. the preparation method of a L-glutamic acid synergy high tower compound fertilizer is characterized in that this preparation method's step is as follows:
The preparation of A, L-glutamic acid synergy liquid:
Compound concentration is 10～30% monosodium glutamate solutions by weight, and this solution is L-glutamic acid synergy liquid A; Perhaps
With concentration by weight 5～15% sodium hydroxide solutions and L-glutamic acid be mixed according to weight ratio 1.8～5.5:1, or 5～15% potassium hydroxide solutions and L-glutamic acid are L-glutamic acid synergy liquid B according to weight ratio 2.5～7.6:1 resulting solution that is mixed by weight with concentration;
The preparation of B, L-glutamic acid-urea melting liquid
Utilize L-glutamic acid synergy liquid A that volume pump obtains steps A or B and urea to be added to the urea melting groove that is arranged on the conventional urea production process prilling tower according to its weight ratio 1～6:40～77, in 95～125 ℃ of abundant fusions down of temperature, obtain a kind of L-glutamic acid-urea melting liquid;
C, other fertilizer pre-treatment
Diammonium phosphate or monoammonium phosphate, vitriolate of tartar or Repone K, calcium carbonate or rhombspar are pulverized respectively, be preheating to 100～120 ℃ of temperature again, be added to respectively in the described urea melting groove according to its weight ratio 10～30:10～30:1～10 then;
D, granulation
Allow L-glutamic acid-urea melting liquid of step B and the pre-treatment fertilizer of step C in described urea melting groove, carry out congruent melting, the eutectic that obtains is by the rotary nozzle ejection on described prilling tower top, in its prilling tower in dropping process the naturally cooling granulating, at the bottom of its prilling tower, collect, screening obtains described L-glutamic acid synergy high tower compound fertilizer.
5. method according to claim 4, it is characterized in that in the existing urea production technique, weight ratio 1～6:40～77 according to L-glutamic acid synergy liquid A or B and urea melting liquid directly are added to L-glutamic acid synergy liquid A or B in the urea melting liquid, obtain described L-glutamic acid-urea melting liquid.
6. method according to claim 4, the concentration of sodium glutamate that it is characterized in that L-glutamic acid synergy liquid A are by weight 14～25%; L-glutamic acid synergy liquid B is mixed according to weight ratio 2.8～4.5:1 by described sodium hydroxide solution and L-glutamic acid, or be mixed according to weight ratio 3.8～6.2:1 by described potassium hydroxide solution and L-glutamic acid.
7. method according to claim 4, the weight ratio that it is characterized in that described L-glutamic acid synergy liquid A or B and urea is 2～5:45～65.
8. method according to claim 4, the weight ratio that it is characterized in that described L-glutamic acid synergy liquid A or B and urea is 3～4:50～60.
9. method according to claim 8, the smashing fineness that it is characterized in that monoammonium phosphate or diammonium phosphate, vitriolate of tartar or Repone K, calcium carbonate or rhombspar is more than 30 orders.
10. method according to claim 9 is characterized in that the granularity of described L-glutamic acid synergy high tower compound fertilizer is 1.0mm～5.6mm.
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