CN103274856A - Glutamic acid synergistic ammonium phosphate fertilizer and preparation method thereof - Google Patents
Glutamic acid synergistic ammonium phosphate fertilizer and preparation method thereof Download PDFInfo
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- CN103274856A CN103274856A CN2013102378710A CN201310237871A CN103274856A CN 103274856 A CN103274856 A CN 103274856A CN 2013102378710 A CN2013102378710 A CN 2013102378710A CN 201310237871 A CN201310237871 A CN 201310237871A CN 103274856 A CN103274856 A CN 103274856A
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Abstract
The invention relates to a glutamic acid synergistic ammonium phosphate fertilizer and a preparation method thereof. The glutamic acid synergistic ammonium phosphate fertilizer comprises components in parts by weight as follows: 0.1-3.0 parts of a glutamic acid synergist and 97.0-99.90 parts of ammonium phosphate. According to the glutamic acid synergistic ammonium phosphate, by the aid of the action of active ingredients in a glutamic acid synergistic liquid for promoting the growth of crops and the influence of the anti-fixation action on phosphorus, the crop output is increased, the fertilizer utilization rate is increased (by 5-10%), nutrient loss is reduced, and secondary pollution is avoided. According to the fertilizer, secondary processing doesn't exist; the fertilizer has the characteristics as follows: sources of raw materials are wide, the fertilizer is not air-slake and can be transported and applied conveniently, the production process is simple, the cost is low, industrial application is facilitated, and the like; and the fertilizer has a wide application prospect in production.
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 ammophos, also relate to the production method of described L-glutamic acid synergy ammophos.
[background technology]
The phosphorus ammonium is the important phosphate fertilizer variety of China, can be used for the base manure of crops such as wheat, cotton, vegetables and topdress in agriculture production, and the phosphorus ammonium is the important source material of the fertile and fertile production of BB of compound.Phosphate fertilizer distinct issues in the application of agriculture production are: the phosphorus in being manured into soil can be rapidly by soil fixing, in northern calcareous soil, be converted into the Ca-P compound of indissoluble, in Southern Red Soil, be converted into Fe-P compound and the Al-P compound of validity difference.At present, still there are many disputes in academia to the approach of phosphorus ammonium modification, someone advocates sustained release method modification (for example coating phosphorus ammonium), referring to document (Li Jianyun. phosphate fertilizer Synergistic technique progress [J]. phosphate fertilizer and multiple fertilizer, 2007,22(5): 64～67), but have the people to think that slow-release phosphate fertilizer may cause phosphorus fixing fast in soil, reduces its fertilizer efficiency.But, the modified synergistic approach of phosphorus ammonium is to slow down phosphorus fixing in soil at all, this is less than dispute.When minimizing phosphorus is by soil fixing, strengthen the receptivity of crop, will effectively improve the utilising efficiency of phosphate fertilizer.
For this reason, the inventor has carried out lot of experiments, and modification is benefited our pursuits to the phosphorus ammonium, has obtained gratifying effect.
[summary of the invention]
[technical problem that will solve]
The purpose of this invention is to provide a kind of L-glutamic acid synergy ammophos.This L-glutamic acid synergy phosphorus ammonium can slow down phosphorus by the process of soil fixing, improves phosphate fertilizer utilization efficiency; Phosphorus, potassium and middle trace element in can also activating soil.
Another object of the present invention provides the preparation method of described L-glutamic acid synergy ammophos.
[technical scheme]
The present invention is achieved through the following technical solutions.
The present invention relates to a kind of L-glutamic acid synergy ammophos.Described L-glutamic acid synergy ammophos is made up of 0.10～3.0 part of L-glutamic acid synergistic agent and 97.0～99.90 parts of phosphorus ammoniums by weight, and described phosphorus ammonium is made up of monoammonium phosphate and diammonium phosphate.
A preferred embodiment of the invention, described ammophos is by 0.30～2.10 part of L-glutamic acid synergistic agent and 97.90～99.70 parts of phosphorus ammoniums are formed by weight.
According to another kind of preferred implementation of the present invention, described ammophos is by 0.4～1.80 part of L-glutamic acid synergistic agent and 98.20～99.60 parts of phosphorus ammoniums are formed by weight.
The invention still further relates to the production method of described L-glutamic acid synergy ammophos.The step of this production method 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-phosphor ammonium slurry
With liquefied ammonia and concentration by weight 48～52% strong phosphoric acid mix according to its mol ratio 1.0～2.0, obtain a kind of phosphorus ammonium reaction mass; Then
Utilize volume pump that the L-glutamic acid synergy liquid A of steps A preparation or B and described phosphorus ammonium reaction mass are added in the pre-neutralization reactive tank according to its weight ratio 1～10:90～99, abundant mixing obtains a kind of phosphor ammonium slurry that contains the L-glutamic acid synergy liquid under the condition of 115～120 ℃ of temperature;
C, granulation
The phosphor ammonium slurry that contains the L-glutamic acid synergy liquid that step B is obtained is in tubular reactor sprays into rotary drum granulator; returning charge to rotary drum granulator is coated with; granulation obtains L-glutamic acid synergy phosphorus ammonium particle; it carries out drying then in dram; sieve again, obtain described L-glutamic acid synergy phosphorus ammonium.
A preferred embodiment of the invention, the weight ratio of described L-glutamic acid synergy liquid A or B and described phosphorus ammonium reaction mass is 3.0～7.0:93.0～97.0.
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 described phosphorus ammonium reaction mass is 4.0～6.0:94.0～96.0.
A preferred embodiment of the invention, the concentration of sodium glutamate of 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.
According to another kind of preferred implementation of the present invention, in step C, the described phosphor ammonium slurry that contains the L-glutamic acid synergy liquid stops 1～5min under the condition of 115～120 ℃ of temperature in described tubular reactor.
According to another kind of preferred implementation of the present invention, in step C, the described phosphor ammonium slurry that contains the L-glutamic acid synergy liquid stops 3～15min under the condition of 50～100 ℃ of temperature and rotating speed 10～25 commentaries on classics/min in described rotary drum granulator.
According to another kind of preferred implementation of the present invention, in step C, described L-glutamic acid synergy phosphorus ammonium particle in described dram under the condition of 60～200 ℃ of temperature and rotating speed 10～20 commentaries on classics/min dry 5～15min.
Below the present invention will be described in more detail.
The present invention relates to a kind of L-glutamic acid synergy ammophos.
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 phosphorus ammonium, 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, described L-glutamic acid synergy ammophos is made up of 0.10～3.0 part of L-glutamic acid synergistic agent and 97.0～99.90 parts of phosphorus ammoniums by weight, and described phosphorus ammonium is made up of monoammonium phosphate and diammonium phosphate.
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 phosphorus ammonium technological process.
Described L-glutamic acid synergy liquid A or B will be described in detail in the L-glutamic acid synergy ammophos production technique 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.
It is not according to the present invention, when the phosphorus ammonium is 98.80～99.70 weight parts in L-glutamic acid synergy ammophos of the present invention, if the amount of L-glutamic acid synergistic agent is lower than 0.10 weight part, then can synergistic effect remarkable.; If the amount of L-glutamic acid synergistic agent is higher than 3.0 weight parts, then can reduce the nutrient content of L-glutamic acid synergy ammophos, increase production cost simultaneously; Therefore, the amount of L-glutamic acid synergistic agent is that 0.10～3.0 weight part is appropriate.
Preferably, described ammophos is by 0.30～2.1 part of L-glutamic acid synergistic agent and 97.90～99.70 parts of phosphorus ammoniums are formed by weight.
More preferably, described ammophos is by 0.40～1.80 part of L-glutamic acid synergistic agent and 98.20～99.60 parts of phosphorus ammoniums are formed by weight.
The invention still further relates to the production method of described L-glutamic acid synergy ammophos, concrete production method is referring to accompanying drawing 1.
The step of this production method 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-phosphor ammonium slurry
With liquefied ammonia and concentration by weight 48～52% strong phosphoric acid mix according to its mol ratio 1.0～2.0, obtain a kind of phosphorus ammonium reaction mass; Then
Utilize volume pump that the L-glutamic acid synergy liquid A of steps A preparation or B and described phosphorus ammonium reaction mass are added in the pre-neutralization reactive tank according to its weight ratio 1～10:90～99, abundant mixing obtains a kind of phosphor ammonium slurry that contains the L-glutamic acid synergy liquid under the condition of 115～120 ℃ of temperature.
In the present invention, the mol ratio of liquefied ammonia and strong phosphoric acid also is referred to as degree of neutralization.Degree of neutralization is 1.0 o'clock, and the reaction product of strong phosphoric acid and liquefied ammonia mainly is monoammonium phosphate, mainly is diammonium phosphate and degree of neutralization is 1.8 o'clock reaction product.Therefore, the mol ratio of liquefied ammonia and strong phosphoric acid is in 1.0～2.0 scopes, and its phosphorus ammonium is made up of monoammonium phosphate and diammonium phosphate, and their mol ratio will change with the mol ratio variation of liquefied ammonia and strong phosphoric acid.
Preferably, the weight ratio of described L-glutamic acid synergy liquid A or B and described phosphorus ammonium reaction mass is 3.0～7.0:93.0～97.0.
More preferably, the weight ratio of described L-glutamic acid synergy liquid A or B and described phosphorus ammonium reaction mass is 4.0～6.0:94.0～96.0.
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 pre-neutralization reactive tank is the reactive tank that those skilled in the art know, for example the reactive tank sold with trade(brand)name stainless steel reaction groove of the permanent good chemical industry equipment difficult to understand of the reactive tank sold with trade(brand)name glass reinforced plastic reactive tank of the Fu An of Anqiu City glass fibre reinforced plastic factory, reactive tank, Foshan City that Suzhou City new peak mechanical means Manufacturing Co., Ltd sells with trade(brand)name composite titanium reactive tank company limited.
C, granulation
The phosphor ammonium slurry that contains the L-glutamic acid synergy liquid that step B is obtained is in tubular reactor sprays into rotary drum granulator; returning charge to rotary drum granulator is coated with; granulation obtains L-glutamic acid synergy phosphorus ammonium particle; it carries out drying then in dram; sieve again, obtain described L-glutamic acid synergy phosphorus ammonium.
Among the present invention, described tubular reactor is the equipment that those skilled in the art know, for example the reactor sold with graphite tubular type reactor pin of the hundred major graphite equipment in Nantong company limited, the reactor that sell with trade(brand)name stainless steel tubular type reactor pin the Taian City JinTaiShan graphite Chemical Engineering Equipment Co., Ltd, the reactor that Qidong giant dragon petrochemical complex equipment company limited sells with trade(brand)name JLGF pipeline reactor.
In this step, the described phosphor ammonium slurry that contains the L-glutamic acid synergy liquid stops 1～5min under the condition of 115～120 ℃ of temperature in described tubular reactor.
Among the present invention; described rotary drum granulator is the granulating equipment that those skilled in the art know, and for example drying plant company limited in east, Tai reaches machine works with the tablets press of ZG-series rotary drum granulator sale with the tablets press of trade(brand)name ZL-series rotary drum granulator sale, tablets press, the inscription of Yingyang, Henan Province that Zhengzhou City one sincere machinofacture company limited sells with trade(brand)name ZG-series rotary drum granulator.
In this step, the described phosphor ammonium slurry that contains the L-glutamic acid synergy liquid stops 3～15min under the condition of 50～100 ℃ of temperature and rotating speed 10～25 commentaries on classics/min in described rotary drum granulator.
In the present invention, described dram is the drying plant that those skilled in the art know, and for example the Sino-German heavy industry in Luoyang, Henan company limited is that dram, Henan letter Sheng heavy-duty machinery Manufacturing Co., Ltd that trade(brand)name is sold are that dram, Central Plains, the Henan mining machinery Manufacturing Co., Ltd that trade(brand)name is sold is the dram that trade(brand)name is sold with the rotary drum drying machine with the rotary drum drying machine with the dryer.
In step C, described L-glutamic acid synergy phosphorus ammonium particle in described dram under the condition of 60～200 ℃ of temperature and rotating speed 10～20 commentaries on classics/min dry 5～15min.
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.
In the present invention, described L-glutamic acid synergy phosphorus ammonium particle size is 1mm～4mm, turn back in its technological process of production after sieve top need be pulverized, and the lower part of screen branch turns back to the rotary drum granulator import.
Available nutrient in the L-glutamic acid synergy phosphorus ammonium of employing the inventive method preparation is to adopt standard method GB10209.2-2010 to measure.
L-glutamic acid synergy ammonium phosphate production method of the present invention has following characteristics: the L-glutamic acid source is wide, cheap, uses safety; On the basis that is not changing existing phosphorus ammonium spray granulating production technique, just can production synergy phosphorus ammonium by adding equipment such as simple volume pump, this production technique is simple, and production capacity height, cost are low, and environmental friendliness.
The present invention utilizes L-glutamic acid to produce L-glutamic acid Synergistic ammonium bicarbonate product, on the basis of the technology that does not change phosphorus ammonium whitewashing-drum granulating, produce L-glutamic acid synergy phosphorus ammonium by adding simple device, this production technique is simple, and the production capacity height, cost is low and environmental friendliness; 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.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.Compare with common phosphorus ammonium, L-glutamic acid synergy phosphorus ammonium can be by reducing the fixed speed that soil pH, raising phosphatase activity etc. slow down phosphate fertilizer, the phosphorus in the activating soil simultaneously.Thereby this synergy ammonium phosphate product improves the effect of aspects such as edatope by the promoter action of L-glutamic acid synergistic agent to plant growth, obviously improves phosphate fertilizer utilization efficiency.Therefore, L-glutamic acid synergy phosphorus ammonium application prospect of the present invention is boundless.
Use such as L-glutamic acid synergy phosphorus ammonium of the present invention can be used as base manure, topdress.
The usage quantity of L-glutamic acid synergy phosphorus ammonium of the present invention needs to determine according to factors such as soil regime, crop varieties, crop growth phase, crop alimentary situations.
[beneficial effect]
The invention has the beneficial effects as follows: production technique of the present invention is simple, and the production capacity height, cost is low and environmental friendliness; L-glutamic acid synergy ammonium phosphate product can be simplified agricultural operation in farming; On benefit, can improve plant recovery of nutrient (5～10 percentage points); This product can strengthen the root system vigor by promoting the crop root growth, improves edatope, slows down the effect of aspects such as phosphate fertilizer is fixing, 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.L-glutamic acid synergy phosphorus ammonium of the present invention has extraordinary application prospect.
[description of drawings]
Fig. 1 is L-glutamic acid synergy phosphorus ammonium Production Flow Chart synoptic diagram 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-pre-neutralization reactive tank, 5-strong phosphoric acid, 6-liquefied ammonia, 7-tubular reactor, 8-rotary drum granulator, 9-dram, 10-trommel screen, the final L-glutamic acid synergy ammonium phosphate product that obtains of 11-.
[embodiment]
Can understand the present invention better by following embodiment.
Embodiment 1: the production of L-glutamic acid synergy ammophos 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-phosphor ammonium slurry
With liquefied ammonia and concentration by weight 48% strong phosphoric acid mix according to its mol ratio 1.2, obtain a kind of phosphorus ammonium reaction mass; Then
The volume pump that use is sold with trade(brand)name JYM-I by the Changzhou howl source limited public affairs of machinery, L-glutamic acid synergy liquid A and the described phosphorus ammonium reaction mass of steps A preparation are added to by in the pre-neutralization reactive tank of the Fu An of Anqiu City glass fibre reinforced plastic factory with the sale of trade(brand)name glass reinforced plastic reactive tank according to its weight ratio 1:92, abundant mixing obtains a kind of phosphor ammonium slurry that contains the L-glutamic acid synergy liquid under the condition of 115 ℃ of temperature;
C, granulation
The tubular reactor of the phosphor ammonium slurry that contains the L-glutamic acid synergy liquid by being sold with graphite tubular type reactor pin by the hundred major graphite equipment in Nantong company limited that allows step B obtain stops 5min down for 120 ℃ in temperature therein; Spray into then by in the rotary drum granulator of east, Tai drying plant company limited with the sale of trade(brand)name ZL-series rotary drum granulator; under the condition of 50 ℃ of temperature and rotating speed 10 commentaries on classics/min, stop 3min therein; returning charge to rotary drum granulator is coated with, and granulation obtains L-glutamic acid synergy phosphorus ammonium particle.
Described L-glutamic acid synergy phosphorus ammonium particle then in the dram that Luoyang, effluent south Sino-German heavy industry company limited sells with the trade(brand)name dryer under the condition of 60 ℃ of temperature and rotating speed 20 commentaries on classics/min dry 5min, sieve in the trommel screen of being sold with trade(brand)name GT-series trommel screen by Xiang power environment protection equipment company limited of Shenyang section, obtaining size is the L-glutamic acid synergy phosphorus ammonium of 1～4mm again.
L-glutamic acid content in this L-glutamic acid Synergistic ammonium bicarbonate product is to adopt the method for describing in this specification sheets to measure, and the nutrient content of this L-glutamic acid Synergistic ammonium bicarbonate is to adopt standard method GB/T10209 to measure.Its measurement result is as follows in weight percent:
Nitrogen content %=12.2% in the phosphorus ammonium; P
2O
5Content=44.7%; L-glutamic acid synergistic agent content %=0.2%.
Embodiment 2: the production of L-glutamic acid synergy ammophos 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-phosphor ammonium slurry
With liquefied ammonia and concentration by weight 52% strong phosphoric acid mix according to its mol ratio 1.5, obtain a kind of phosphorus ammonium reaction mass; Then
Use by 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 synergy liquid B and the described phosphorus ammonium reaction mass of steps A preparation are added to by in the pre-neutralization reactive tank of Suzhou City new peak mechanical means Manufacturing Co., Ltd with the sale of trade(brand)name composite titanium reactive tank according to its weight ratio 8:95, abundant mixing obtains a kind of phosphor ammonium slurry that contains the L-glutamic acid synergy liquid under the condition of 120 ℃ of temperature;
C, granulation
The tubular reactor of the phosphor ammonium slurry that contains the L-glutamic acid synergy liquid by being sold with trade(brand)name stainless steel tubular type reactor pin by the Taian City JinTaiShan graphite Chemical Engineering Equipment Co., Ltd that allows step B obtain stops 5min therein under the condition of 115 ℃ of temperature; Spray into then by in the rotary drum granulator of Zhengzhou City one sincere machinofacture company limited with the sale of trade(brand)name ZG-series rotary drum granulator; under the condition of 100 ℃ of temperature and rotating speed 25 commentaries on classics/min, stop 15min therein; returning charge to rotary drum granulator is coated with, and granulation obtains L-glutamic acid synergy phosphorus ammonium particle.
It is dry 15min under the condition at 200 ℃ of temperature and rotating speed 20 commentaries on classics/min in the trade(brand)name dram of selling with the rotary drum drying machine that described L-glutamic acid synergy phosphorus ammonium particle is contained heavy-duty machinery Manufacturing Co., Ltd at effluent south letter then, by sieving in the trommel screen of being sold with trade(brand)name GTS series trommel screen by Wuxi City duplex engineering conveyor tool company limited, obtaining size is the L-glutamic acid synergy phosphorus ammonium of 2mm～3mm again.
L-glutamic acid content in this L-glutamic acid Synergistic ammonium bicarbonate product is to adopt the method for describing in this specification sheets to measure, and the nutrient content of this L-glutamic acid Synergistic ammonium bicarbonate is to adopt standard method GB/T10209 to measure.Its measurement result is as follows in weight percent:
Nitrogen content %=16.3% in the phosphorus ammonium; P
2O
5Content=45.2%; L-glutamic acid synergistic agent content %=0.8%.
Embodiment 3: the production of L-glutamic acid synergy ammophos 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-phosphor ammonium slurry
With liquefied ammonia and concentration by weight 50% strong phosphoric acid mix according to its mol ratio 1.0, obtain a kind of phosphorus ammonium reaction mass; Then
The volume pump that use is sold with trade(brand)name JYD Series Hydraulic diaphragm metering pump by the triumphant pump industry in last sea Manufacturing Co., Ltd, L-glutamic acid synergy liquid A and the described phosphorus ammonium reaction mass of steps A preparation are added to by in the pre-neutralization reactive tank of the permanent good chemical industry equipment company limited difficult to understand in Foshan City with the sale of trade(brand)name stainless steel reaction groove according to its weight ratio 3:90, abundant mixing obtains a kind of phosphor ammonium slurry that contains the L-glutamic acid synergy liquid under the condition of 118 ℃ of temperature;
C, granulation
The phosphor ammonium slurry that contains the L-glutamic acid synergy liquid that step B obtains is equipped the tubular reactor that company limited sells with trade(brand)name JLGF pipeline reactor by Qidong giant dragon petrochemical complex, under the condition of 118 ℃ of temperature, stop 2min therein; Spray into then by the inscription of Yingyang, Henan Province and reach in the rotary drum granulator of machine works with the sale of ZG-series rotary drum granulator; under the condition of 70 ℃ of temperature and rotating speed 20 commentaries on classics/min, stop 10min therein; returning charge to rotary drum granulator is coated with, and granulation obtains L-glutamic acid synergy phosphorus ammonium particle.
Described L-glutamic acid synergy phosphorus ammonium particle is dry 10min under the condition at 100 ℃ of temperature and rotating speed 15 commentaries on classics/min in the trade(brand)name dram of selling with the rotary drum drying machine in Central Plains, effluent south mining machinery Manufacturing Co., Ltd then, by sieving in the trommel screen of being sold with trade(brand)name GTS type trommel screen by Shijiazhuang City Yongxing machinery company limited, obtaining size is the L-glutamic acid synergy phosphorus ammonium of 1mm～3mm again.
L-glutamic acid content in this L-glutamic acid Synergistic ammonium bicarbonate product is to adopt the method for describing in this specification sheets to measure, and the nutrient content of this L-glutamic acid Synergistic ammonium bicarbonate is to adopt standard method GB/T10209 to measure.Its measurement result is as follows in weight percent:
Nitrogen content %=11.1% in the phosphorus ammonium; P
2O
5Content=44.2%; L-glutamic acid synergistic agent content %=0.3%.
Embodiment 4: the production of L-glutamic acid synergy ammophos 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-phosphor ammonium slurry
With liquefied ammonia and concentration by weight 52% strong phosphoric acid mix according to its mol ratio 2.0, obtain a kind of phosphorus ammonium reaction mass; Then
The volume pump that use is sold with trade(brand)name JYM-II volume pump by the Changzhou howl source limited public affairs of machinery, L-glutamic acid synergy liquid B and the described phosphorus ammonium reaction mass of steps A preparation are added to by in the pre-neutralization reactive tank of the Fu An of Anqiu City glass fibre reinforced plastic factory with the sale of trade(brand)name glass reinforced plastic reactive tank according to its weight ratio 4:99, abundant mixing obtains a kind of phosphor ammonium slurry that contains the L-glutamic acid synergy liquid under the condition of 116 ℃ of temperature;
C, granulation
Allow the phosphor ammonium slurry that contains the L-glutamic acid synergy liquid that step B obtains by the tubular reactor that the hundred major graphite equipment in Nantong company limited sells with graphite tubular type reactor pin, under the condition of 117 ℃ of temperature, stop 3min therein; Spray into then by in the rotary drum granulator of east, Tai drying plant company limited with the sale of trade(brand)name ZL-series rotary drum granulator; under the condition of 70 ℃ of temperature and rotating speed 15 commentaries on classics/min, stop 5min therein; returning charge to rotary drum granulator is coated with, and granulation obtains L-glutamic acid synergy phosphorus ammonium particle.
Described L-glutamic acid synergy phosphorus ammonium particle is dry 12min under the condition at 80 ℃ of temperature and rotating speed 13 commentaries on classics/min in the trade(brand)name dram of selling with the dryer in Luoyang, effluent south Sino-German heavy industry company limited then, by sieving in the trommel screen of being sold with trade(brand)name GT-series trommel screen by Xiang power environment protection equipment company limited of Shenyang section, obtaining size is the L-glutamic acid synergy phosphorus ammonium of 2mm～4mm again.
L-glutamic acid content in this L-glutamic acid Synergistic ammonium bicarbonate product is to adopt the method for describing in this specification sheets to measure, and the nutrient content of this L-glutamic acid Synergistic ammonium bicarbonate is to adopt standard method GB/T10209 to measure.Its measurement result is as follows in weight percent:
Nitrogen content %=18.0% in the phosphorus ammonium; P
2O
5Content=46.1%; L-glutamic acid synergistic agent content %=0.64%.
Embodiment 5: the production of L-glutamic acid synergy ammophos 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-phosphor ammonium slurry
With liquefied ammonia and concentration by weight 48% strong phosphoric acid mix according to its mol ratio 1.6, obtain a kind of phosphorus ammonium reaction mass; Then
The volume pump that use is sold with trade(brand)name JJM-II plunger type metering pump by the Changzhou howl source limited public affairs of machinery, L-glutamic acid synergy liquid B and the described phosphorus ammonium reaction mass of steps A preparation are added to by in the pre-neutralization reactive tank of the Fu An of Anqiu City glass fibre reinforced plastic factory with the sale of trade(brand)name glass reinforced plastic reactive tank according to its weight ratio 7:93, abundant mixing obtains a kind of phosphor ammonium slurry that contains the L-glutamic acid synergy liquid under the condition of 116 ℃ of temperature;
C, granulation
Allow the phosphor ammonium slurry that contains the L-glutamic acid synergy liquid that step B obtains by the tubular reactor that the hundred major graphite equipment in Nantong company limited sells with graphite tubular type reactor pin, under the condition of 119 ℃ of temperature, stop 4min therein; Spray into then by in the rotary drum granulator of east, Tai drying plant company limited with the sale of trade(brand)name ZL-series rotary drum granulator; under the condition of 75 ℃ of temperature and rotating speed 20, stop 8min therein; returning charge to rotary drum granulator is coated with, and granulation obtains L-glutamic acid synergy phosphorus ammonium particle.
Described L-glutamic acid synergy phosphorus ammonium particle is dry 8min under the condition at 90 ℃ of temperature and rotating speed 18 in the trade(brand)name dram of selling with the dryer in Luoyang, effluent south Sino-German heavy industry company limited then, by sieving in the trommel screen of being sold with trade(brand)name GT-series trommel screen by Xiang power environment protection equipment company limited of Shenyang section, obtaining size is the L-glutamic acid synergy phosphorus ammonium of 1mm～4mm again.
L-glutamic acid content in this L-glutamic acid Synergistic ammonium bicarbonate product is to adopt the method for describing in this specification sheets to measure, and the nutrient content of this L-glutamic acid Synergistic ammonium bicarbonate is to adopt standard method GB/T10209 to measure.Its measurement result is as follows in weight percent:
Nitrogen content %=15.2% in the phosphorus ammonium; P
2O
5Content=45.3%; L-glutamic acid synergistic agent content %=1.34%.
Embodiment 6: the production of L-glutamic acid synergy ammophos 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-phosphor ammonium slurry
With liquefied ammonia and concentration by weight 49% strong phosphoric acid mix according to its mol ratio 1.4, obtain a kind of phosphorus ammonium reaction mass; Then
Use volume pump similarly to Example 1, L-glutamic acid synergy liquid A and the described phosphorus ammonium reaction mass of steps A preparation are added to by in the pre-neutralization reactive tank of the Fu An of Anqiu City glass fibre reinforced plastic factory with the sale of trade(brand)name glass reinforced plastic reactive tank according to its weight ratio 10:97, abundant mixing obtains a kind of phosphor ammonium slurry that contains the L-glutamic acid synergy liquid under the condition of 116 ℃ of temperature;
C, granulation
Use tubular reactor similarly to Example 1, under the condition of 116 ℃ of temperature, stop 3min therein; Spray into then in the rotary drum granulator similarly to Example 1, stop 9min therein under the condition of 65 ℃ of temperature and rotating speed 16 commentaries on classics/min, the returning charge of rotary drum granulator is coated with, granulation obtains L-glutamic acid synergy phosphorus ammonium particle.
Described L-glutamic acid synergy phosphorus ammonium particle then in dram similarly to Example 1 under the condition of 120 ℃ of temperature and rotating speed 16 commentaries on classics/min dry 12min, trommel screen by similarly to Example 1 sieves again, and obtaining size is the L-glutamic acid synergy phosphorus ammonium of 2mm～4mm.
L-glutamic acid content in this L-glutamic acid Synergistic ammonium bicarbonate product is to adopt the method for describing in this specification sheets to measure, and the nutrient content of this L-glutamic acid Synergistic ammonium bicarbonate is to adopt standard method GB/T10209 to measure.Its measurement result is as follows in weight percent:
Nitrogen content %=14.2% in the phosphorus ammonium; P
2O
5Content=44.7%; L-glutamic acid synergistic agent content %=3.0%.
Embodiment 7: the production of L-glutamic acid synergy ammophos 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-phosphor ammonium slurry
With liquefied ammonia and concentration by weight 51% strong phosphoric acid mix according to its mol ratio 2.0, obtain a kind of phosphorus ammonium reaction mass; Then
Use L-glutamic acid synergy liquid B that the volume pump identical with embodiment 2 prepare steps A and described phosphorus ammonium reaction mass to be added in the pre-neutralization reactive tank identical with embodiment 2 according to its weight ratio 10:94, abundant mixing obtains a kind of phosphor ammonium slurry that contains the L-glutamic acid synergy liquid under the condition of 118 ℃ of temperature;
C, granulation
Allow the phosphor ammonium slurry that contains the L-glutamic acid synergy liquid that step B obtains by the tubular reactor identical with embodiment 2, under the condition of 118 ℃ of temperature, stop 5min therein; Spray into then in the rotary drum granulator identical with embodiment 2, stop 14min therein under the condition of 80 ℃ of temperature and rotating speed 19 commentaries on classics/min, the returning charge of rotary drum granulator is coated with, granulation obtains L-glutamic acid synergy phosphorus ammonium particle.
Described L-glutamic acid synergy phosphorus ammonium particle then in the dram identical with embodiment 2 under the condition of 60 ℃ of temperature and rotating speed 25 commentaries on classics/min dry 10min, by sieving in the trommel screen identical with embodiment 2, obtaining size is the L-glutamic acid synergy phosphorus ammonium of 1mm～4mm again.
L-glutamic acid content in this L-glutamic acid Synergistic ammonium bicarbonate product is to adopt the method for describing in this specification sheets to measure, and the nutrient content of this L-glutamic acid Synergistic ammonium bicarbonate is to adopt standard method GB/T10209 to measure.Its measurement result is as follows in weight percent:
Nitrogen content %=18.0% in the phosphorus ammonium; P
2O
5Content=46.0%; L-glutamic acid synergistic agent content %=1.48%.
Embodiment 8: the production of L-glutamic acid synergy ammophos 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-phosphor ammonium slurry
With liquefied ammonia and concentration by weight 50% strong phosphoric acid mix according to its mol ratio 1.8, obtain a kind of phosphorus ammonium reaction mass; Then
Use L-glutamic acid synergy liquid B that the volume pump identical with embodiment 1 prepare steps A and described phosphorus ammonium reaction mass to be added in the pre-neutralization reactive tank identical with embodiment 1 according to its weight ratio 9:96, abundant mixing obtains a kind of phosphor ammonium slurry that contains the L-glutamic acid synergy liquid under the condition of 115 ℃ of temperature;
C, granulation
Allow the phosphor ammonium slurry that contains the L-glutamic acid synergy liquid that step B obtains by the tubular reactor identical with embodiment 1, under the condition of 118 ℃ of temperature, stop 3min therein; Spray into then in the rotary drum granulator identical with embodiment 1, stop 5min therein under the condition of 85 ℃ of temperature and rotating speed 15 commentaries on classics/min, the returning charge of rotary drum granulator is coated with, granulation obtains L-glutamic acid synergy phosphorus ammonium particle.
Described L-glutamic acid synergy phosphorus ammonium particle then in the dram identical with embodiment 1 under the condition of 125 ℃ of temperature and rotating speed 16 commentaries on classics/min dry 5min, by sieving in the trommel screen identical with embodiment 1, obtaining size is the L-glutamic acid synergy phosphorus ammonium of 2mm～3mm again.
L-glutamic acid content in this L-glutamic acid Synergistic ammonium bicarbonate product is to adopt the method for describing in this specification sheets to measure, and the nutrient content of this L-glutamic acid Synergistic ammonium bicarbonate is to adopt standard method GB/T10209 to measure.Its measurement result is as follows in weight percent:
Nitrogen content %=17.6% in the phosphorus ammonium; P
2O
5Content=45.8%; L-glutamic acid synergistic agent content %=1.05%.
Embodiment 9: the production of L-glutamic acid synergy ammophos 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-phosphor ammonium slurry
With liquefied ammonia and concentration by weight 48% strong phosphoric acid mix according to its mol ratio 1.6, obtain a kind of phosphorus ammonium reaction mass; Then
The volume pump that use is sold with trade(brand)name JJM-II plunger type metering pump by the Changzhou howl source limited public affairs of machinery, L-glutamic acid synergy liquid B and the described phosphorus ammonium reaction mass of steps A preparation are added to by in the pre-neutralization reactive tank of the Fu An of Anqiu City glass fibre reinforced plastic factory with the sale of trade(brand)name glass reinforced plastic reactive tank according to its weight ratio 7:93, abundant mixing obtains a kind of phosphor ammonium slurry that contains the L-glutamic acid synergy liquid under the condition of 116 ℃ of temperature;
C, granulation
Allow the phosphor ammonium slurry that contains the L-glutamic acid synergy liquid that step B obtains by the tubular reactor identical with embodiment 1, under the condition of 119 ℃ of temperature, stop 4min therein; Spray into then in the rotary drum granulator identical with embodiment 1, stop 7min therein under the condition of 90 ℃ of temperature and rotating speed 14 commentaries on classics/min, the returning charge of rotary drum granulator is coated with, granulation obtains L-glutamic acid synergy phosphorus ammonium particle.
Described L-glutamic acid synergy phosphorus ammonium particle then in the dram identical with embodiment 1 under the condition of 150 ℃ of temperature and rotating speed 18 commentaries on classics/min dry 8min, by sieving in the trommel screen identical with embodiment 1, obtaining size is the L-glutamic acid synergy phosphorus ammonium of 1mm～3mm again.
L-glutamic acid content in this L-glutamic acid Synergistic ammonium bicarbonate product is to adopt the method for describing in this specification sheets to measure, and the nutrient content of this L-glutamic acid Synergistic ammonium bicarbonate is to adopt standard method GB/T10209 to measure.Its measurement result is as follows in weight percent:
Nitrogen content %=16.4% in the phosphorus ammonium; P
2O
5Content=44.9%; L-glutamic acid synergistic agent content %=1.75%.
Fertilizer test embodiment 1: the indoor cultivation test
By equivalent chemical fertilizer phosphorus (0.30g P
2O
5/ kg) the commitment principle design experiment will (be opened phosphorylcholine group production, P for the common diammonium phosphate of examination fertilizer
2O
5〉=46%) the L-glutamic acid synergy phosphorus ammonium (GP) for CK contrast and the embodiment of the invention 3 productions mixes the plastic culture of packing into cup with the air-dry soil of mistake 2mm sieve 200g respectively.Repeat 3 times, regulate soil moisture content to 20% with weighting method, the sealing incubator places 25 ℃ of growth cabinets to keep humidity to cultivate, and cultivating the back sampling of 6 weeks, handles pedotheque, measures soil quick-effective phosphor content, pH, Ca
2-P content and phosphatase activity.
The results are shown in Table 1 for this fertilizer test.
Table 1 L-glutamic acid synergy phosphorus ammonium is to soil pH, rapid available phosphorus, Ca
2The influence of-P content and phosphatase activity
Annotate: Ca
2-P represents CaHPO
4, be the highest active part in the soil phosphorus storehouse.
Above-mentioned test-results shows: the pH of soil size directly influence fixing in the soil of phosphorus in the fertilizer, as can be seen from Table 1, compares with common phosphorus ammonium, and L-glutamic acid synergy phosphorus ammonium can make 0.08 unit of soil pH reduction, rapid available phosphorus, Ca
2-P content and phosphatase activity have increased by 21.84%, 18.80% and 10.67% respectively.As seen, the L-glutamic acid synergist of phosphate can improve the soil phosphorus phytase activity by improving soil pH, obviously slows down phosphate fertilizer fixing in the soil, and the phosphorus in the activating soil improves the available phosphorus contents of soil.
Test example 2: manuring field trial
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 wheat 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 and produce the conventional fertilizer application mode, (open phosphorylcholine group production, P with common diammonium phosphate
2O
5〉=46%) 195kg/hm
2, use as base manure behind 150kg urea and the 100kg Repone K mixing, stand up at wheat-jointing stage imposes 150kg/hm
2Urea.
(2) GP: the L-glutamic acid synergy ammonium phosphate product (P that uses the embodiment of the invention 3
2O
5=46.1%) fertilizer amount is identical with CK with use-pattern.The experimental plot area is 50m
2, each is handled 3 times and repeats, and district's group is arranged at random.Other field management is with local farmland.The ripe results of wheat back meter produces.
The results are shown in Table 2 for this fertilizer test.
Table 2 L-glutamic acid synergy phosphorus ammonium is to the influence of wheat yield and utilization rate of nitrogen fertilizer
Above-mentioned test-results shows: waiting under the nutrient input condition, fertilizer product of the present invention is obvious to the effect that increases production and improves productivity of wheat, handles (CK) volume increase 8.04% than common phosphorus ammonium, and the apparent utilization ratio of phosphate fertilizer improves 3.35 percentage points.
This shows, compare with common phosphorus ammonium that L-glutamic acid synergy phosphorus ammonium material of the present invention has good anti-fixed effect, volume increase is obvious, and the plant recovery of nutrient height does not exist 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 ammophos is characterized in that described ammophos is made up of 0.10～3.0 part of L-glutamic acid synergistic agent and 97.00～99.90 phosphorus ammoniums, and described phosphorus ammonium is made up of monoammonium phosphate and diammonium phosphate.
2. L-glutamic acid synergy ammophos according to claim 1 is characterized in that described ammophos is by 0.30～2.10 part of L-glutamic acid synergistic agent and 97.90～99.70 phosphorus ammoniums are formed by weight.
3. L-glutamic acid synergy ammophos according to claim 1 is characterized in that described ammophos is by 0.40～1.80 part of L-glutamic acid synergistic agent and 98.20～99.60 phosphorus ammoniums are formed by weight.
4. according to the production method of the described L-glutamic acid synergy of each claim ammophos among the claim 1-3, it is characterized in that the step of this production method 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-phosphor ammonium slurry
With liquefied ammonia and concentration by weight 48～52% strong phosphoric acid mix according to its mol ratio 1.0～2.0, obtain a kind of phosphorus ammonium reaction mass; Then
Utilize volume pump that the L-glutamic acid synergy liquid A of steps A preparation or B and described phosphorus ammonium reaction mass are added in the pre-neutralization reactive tank according to its weight ratio 1～10:90～99, abundant mixing obtains a kind of phosphor ammonium slurry that contains the L-glutamic acid synergy liquid under the condition of 115～120 ℃ of temperature;
C, granulation
The phosphor ammonium slurry that contains the L-glutamic acid synergy liquid that step B is obtained is in tubular reactor sprays into rotary drum granulator; returning charge to rotary drum granulator is coated with; granulation obtains L-glutamic acid synergy phosphorus ammonium particle; it carries out drying then in dram; sieve again, obtain described L-glutamic acid synergy phosphorus ammonium.
5. method according to claim 4 is characterized in that the weight ratio of described L-glutamic acid synergy liquid A or B and described phosphorus ammonium reaction mass is 3.0～7.0:93.0～97.0.
6. method according to claim 4 is characterized in that the weight ratio of described L-glutamic acid synergy liquid A or B and described phosphorus ammonium reaction mass is 4.0～6.0:94.0～96.0.
7. 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.
8. method according to claim 7 is characterized in that in step C, and the described phosphor ammonium slurry that contains the L-glutamic acid synergy liquid stops 1～5min under the condition of 115～120 ℃ of temperature in described tubular reactor.
9. method according to claim 8 is characterized in that in step C, and the described phosphor ammonium slurry that contains the L-glutamic acid synergy liquid stops 3～15min under the condition of 50～100 ℃ of temperature and rotating speed 10～25 commentaries on classics/min in described rotary drum granulator.
10. method according to claim 4 is characterized in that in step C, described L-glutamic acid synergy phosphorus ammonium particle in described dram under the condition of 60～200 ℃ of temperature and rotating speed 10～20 commentaries on classics/min dry 5～15min.
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| CN101117303A (en) * | 2007-07-09 | 2008-02-06 | 华中农业大学 | Poly-gama-glutamic acid building fertilizer |
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| CN102584497A (en) * | 2012-03-28 | 2012-07-18 | 中国农业科学院农业资源与农业区划研究所 | Glutamic acid synergist urea and preparation method thereof |
| CN102701870A (en) * | 2012-06-27 | 2012-10-03 | 中国农业科学院农业资源与农业区划研究所 | Modified glutamic acid fertilizer synergist and production method and application thereof |
| CN102875235A (en) * | 2012-10-17 | 2013-01-16 | 中国农业科学院农业资源与农业区划研究所 | Coated synergistic nitrogen fertilizer composition and preparation method thereof |
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| CN101117303A (en) * | 2007-07-09 | 2008-02-06 | 华中农业大学 | Poly-gama-glutamic acid building fertilizer |
| CN101182261A (en) * | 2007-11-15 | 2008-05-21 | 山东阜丰生物科技开发有限公司 | Compound fertilizer prepared by glutamic acid fermentation wastewater |
| CN102584497A (en) * | 2012-03-28 | 2012-07-18 | 中国农业科学院农业资源与农业区划研究所 | Glutamic acid synergist urea and preparation method thereof |
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