CN104261373A - Preparation method of special fertilizer for kidney bean - Google Patents
Preparation method of special fertilizer for kidney bean Download PDFInfo
- Publication number
- CN104261373A CN104261373A CN201410477920.2A CN201410477920A CN104261373A CN 104261373 A CN104261373 A CN 104261373A CN 201410477920 A CN201410477920 A CN 201410477920A CN 104261373 A CN104261373 A CN 104261373A
- Authority
- CN
- China
- Prior art keywords
- kidney bean
- potassium
- special fertilizer
- reaction
- fertilizer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The invention relates to the technical field of chemical industry, and discloses a preparation method of a special fertilizer for kidney bean, which solves the following technical problems: the matching of the nutrient elements in the existing fertilizer does not conform to the demands of kidney bean for the nutrient elements, so that the fertilizer applied to the kidney bean can not be completely absorbed by the kidney bean, and the compounds of some elements residing in the soil change the soil structure and pollute the environment. According to the method, phosphoric acid and carbamide react to generate an intermediate, the intermediate reacts with alkaline potassium, and part of potassium dihydrogen phosphate generated by the reaction is crystallized to precipitate, so that the contents of nitrogen, phosphorus and potassium in the reaction solution are regulated to satisfy the demands for kidney bean growth. The special fertilizer for kidney bean is lower in production cost, can be largely utilized by the vegetable, and has obvious economic value.
Description
Technical field
The present invention relates to chemical technology field, particularly relate to a kind of compound method of Kidney bean special fertilizer.
Background technology
Kidney bean has another name called white kidney beans, frame beans, sword bean, French beans, beautiful beans and removes beans.Kidney bean is a kind of high potassium, Gao Mei, low-sodium diet seldom, and its pharmaceutical use is also very high, nutritious, and protein content is higher than chicken, and calcium contents is more than 6 times of chicken, and the content of iron is 4 times of chicken, and the vitamin B group contained by it is also higher than chicken.Therefore, Kidney bean of many uses, market demand is many.Kidney bean is strict to the requirement of soil property, but in the neutral loam that suitable growth is deep at soil layer, draining good, organic matter is abundant.More with phosphorus, potassium to the requirement of fertilizer, nitrogen also needs.Will have appropriate nitrogenous fertilizer supply at Seedling Stage and pregnant flower bud phase, guarantee is got bumper crops.According to statistics, every 1000 kilograms of product need absorbed nitrogen 10.1 kilograms, 2.3 kilograms, phosphorus, 5.9 kilograms, potassium.At present, the fertilizer that China's plantation Kidney bean is used is generally urea, and the nutritive element contained by it is mainly nitrogen, and other nutritive element contents needed for Kidney bean growth are lower, are unfavorable for the growth of Kidney bean, reduce Kidney bean output.And this fertilizer is difficult to be absorbed as much as possible completely by plant, causes element pollution environment, affects the soil property of soil.
For this reason, there is investigator to analyze the nutritive element needed for Kidney bean growth, prepare the special fertilizer needed for Kidney bean growth.Such as, number of patent application is 200610115544.2 to disclose " special-purpose controlled-release fertilizer coated with resin for kidney bean and preparation method thereof ", it is composite obtained that its nutritive element needed for Kidney bean growth have chosen the components such as thermoplastic resin membrane wrapping saltpetre, thermoplastic resin membrane wrapping ammonium nitrate, epoxy resin integument composite fertilizer, compound potassium sulfate fertilizer, effect of increasing production is good, but the technical difficulty of preparation is larger, production cost is higher, is difficult to promote.
Potassium primary phosphate is that one can the field such as applicable industry, agricultural, and tool has been widely used.As in the production of industrial aspect mainly as chemical raw material, agriculturally be mainly used in the interpolation of feed and chemical fertilizer, in addition, potassium primary phosphate can also be used for food to be added as raw material, improve food mouthfeel and quality, supplement the trace elements such as potassium element for human body.Production method at present for potassium dihydrogen phosphate product mainly contains neutralisation, extraction process, ion exchange method, double decomposition, crystallization process and electrolytic process etc., the feature that neutralisation produces potassium primary phosphate neutralisation is that technical process is short, technology maturation, equipment is few, quality product is high, energy consumption is low, less investment.This method is with thermal phosphoric acid and potash for raw material, and production cost is high, is difficult to agriculturally applying, mainly for the production of the potassium primary phosphate of food, medicine and technical grade.Solvent extration becomes one of most effective means of purification of phosphoric acid, produces provide conveniently with phosphoric acid by wet process.Adopt organic solvent extractionprocess, optionally to extracting, can get rid of the type impurity ion in raw phosphoric acid, the potassium dihydrogen phosphate product quality produced is high, and energy consumption is low, but the phosphoric acid rate of recovery is low, and organic solvent is expensive, has pollution to environment.Ion hands over method can obtain compared with the raw material of pure phosphoric acid ammonium dihydrogen solution as ion-exchange with removing most of impurity with phosphoric acid by wet process in ammonia, simultaneously with the potassium hydroxide that more cheap Repone K replaces neutralisation used, production cost has larger decline compared with neutralisation, but the steam output of this method too major end item needs vaporize water, energy consumption is too high, and resin price is expensive, one-time investment is larger.In addition, often produce the ammonium chloride dilute solution that potassium primary phosphate wants by-product, when output is large, aftertreatment is pretty troublesome; React with Repone K the technical process generating potassium primary phosphate again after double decomposition mainly adopts phosphoric acid and sodium carbonate to react to prepare SODIUM PHOSPHATE, MONOBASIC.The feature of this method is that production unit is simple, and reaction conditions is gentle, easy to operate, does not pollute, reliable in quality, but the quality product of this method is not as neutralisation, can contain a small amount of sodium-chlor.Reclaim sodium-chlor power consumption in mother liquor after crystallization high, be worth low.
The improvement of above technology still also exists larger problems, its process regulation is bad, then can generate other other products in the reaction, potassium phosphate,monobasic is generated as potassium primary phosphate is easily hydrolyzed in water, cause the yield of potassium primary phosphate lower, meanwhile, in whole production technique, also have a large amount of waste and old mass emissions, be difficult to the zero release problem of address contamination; And, potassium dihydrogen phosphate product is also difficult to separate out completely in the process of crystallization, but be in the saturated solution of state of saturation all the time, then content is larger in the solution to make potassium primary phosphate, if degree of depth crystallization, the purity of the potassium dihydrogen phosphate product then obtained is poor, affects the quality of potassium dihydrogen phosphate product.Based on this, by carrying out research and discussion to potassium primary phosphate as the character of fertilizer, and in conjunction with a large amount of reports, potassium primary phosphate has the character that can be absorbed by plants and reach more than 98%, and it is reported that common phosphate fertilizer utilization ratio absorbed by crops only can reach 10-25%, common potash fertilizer only absorbed by cropsly can utilize 45-60%, and the nitrogenous fertilizer such as urea, carbon ammonium only absorbed by cropsly can utilize 20-46%; As can be seen here, potassium primary phosphate utilization ratio absorbed by crops is apparently higher than common azophoska.
There is the method for investigator's other chemical fertilizer of coproduction in the process preparing potassium primary phosphate, such as, if the patent No. is 200610048214.6 disclosed " co-productions of a kind of potassium primary phosphate, S-based compound fertilizer and polymerize aluminum chloride ", it is produced in potassium primary phosphate process and produces S-based compound fertilizer and polymerize aluminum chloride, what improve that phosphoric acid by wet process prepares impurity in potassium dihydrogen phosphate product process affects problem, improves economic benefit.But do not see having and anyly carry out element collocation about by composite fertilizer's preparation process for the demand of crop, and the technical scheme being made into the composite fertilizer of chemical combination state exists.In the process of preparation potassium dihydrogen phosphate product, the waste of a large amount of potassium primary phosphate that potassium primary phosphate crystallization not exclusively can cause, potassium primary phosphate crystallization can bring a large amount of impurity into potassium dihydrogen phosphate product excessively again, then makes the purity of potassium dihydrogen phosphate product lower.By retrieving on the net, there is no the patent documentation or report that solve this technical problem.
Summary of the invention
In view of this, the object of this invention is to provide a kind of compound method of Kidney bean special fertilizer, the ratio of Kidney bean to the demand of nutritive element is not met to solve the collocation of existing fertilizer Middle nutrition element, the fertilizer to Kidney bean is used is caused not absorbed completely by Kidney bean, some of them element compound remains in soil, change the structure of soil, contaminate environment.Simultaneously, solve in the process of preparation potassium dihydrogen phosphate product, the waste of a large amount of potassium primary phosphate that potassium primary phosphate crystallization not exclusively can cause, potassium primary phosphate crystallization can bring a large amount of impurity into potassium dihydrogen phosphate product excessively again, then makes the technical problem that the purity of potassium dihydrogen phosphate product is lower.
The present invention solves the problems of the technologies described above by the following technical programs:
A compound method for Kidney bean special fertilizer, comprises the following steps:
(1) raw material hybrid reaction: be (1.2-1.4) with carboxamide with mol ratio by phosphoric acid: 1 is added in reactor and mixes, then with the heat-up rate of 4 DEG C/min, the temperature of two mixtures is elevated to 120-150 DEG C, stirring reaction 130-150min, after temperature being cooled to 35-45 DEG C, centrifugation obtains intermediate again;
(2) potassium primary phosphate is prepared: be 1:(1.1-1.3 by the intermediate that obtains in step (1) and alkaline potassium salt with mol ratio) hybrid reaction in a kettle., take stirring velocity as 200-250r/min stirring reaction 40-60min, and the pH value regulating reaction is 8-9, after reaction terminates, obtain the slip of Nitrogen-and Phosphorus-containing potassium, this slip is placed in the process of cooling crystallizer circulation crystallization, detect simultaneously and analyze filtrate, when nitrogen content in filtrate is 5-6%, phosphorus content is 2.8-3.1%, when potassium content is 5.2-6%, stop crystallization and filter, the filter cake obtained is potassium dihydrogen phosphate product,
(3) Kidney bean special fertilizer is prepared: in the filtrate filter potassium primary phosphate in step (2) after, add the first finished product that other medium trace element compounds are adjusted to Kidney bean special fertilizer, first finished product is placed in baker, heat-up rate is adopted to be that 5 DEG C/min is warming up to 25-30 DEG C, after dry 40-60min, adjustment moisture content is 3-5%, can obtain Kidney bean special fertilizer.
Described intermediate is Ureaphil.
In described step (1), be that 1.3:1 is added in reactor and mixes with mol ratio by phosphoric acid and carboxamide, then with the heat-up rate of 4 DEG C/min, the temperature of two mixtures is elevated to 140 DEG C, stirring reaction 140min, after temperature being cooled to 40 DEG C, centrifugation obtains intermediate again.
In described filtrate, nitrogen content is 5.5%, phosphorus content is 3%, potassium content is 5.5%.
In described step (2), when intermediate and alkaline potassium salt react, stirring velocity is 240r/min, and the reaction times is 50min, and the pH value of reaction soln is 8.5.
Described alkaline potassium salt is potassium hydroxide.
Described medium trace element compound is calcium sulfate, magnesium sulfate, zinc sulfate, borax and ammonium molybdate.
The mol ratio of described intermediate and alkaline potassium salt is 1:1.2.
Beneficial effect of the present invention is:
1. it is first react with phosphoric acid and sodium carbonate to prepare SODIUM PHOSPHATE, MONOBASIC that traditional double decomposition prepares potassium primary phosphate, and then to react with SODIUM PHOSPHATE, MONOBASIC and Repone K and prepare potassium primary phosphate, containing a small amount of Repone K in the potassium dihydrogen phosphate product of producing, cause the purity of potassium dihydrogen phosphate product not high, after the present invention adopts phosphoric acid and carboxamide, react with reactant and alkaline potassium salt again and prepare potassium primary phosphate, shorten technical process, and by controlling the various parameters in production process, make the purity of the potassium primary phosphate produced higher, reach more than 95%.
2. the present invention first separates out potassium primary phosphate by making the reaction solution of preparation Kidney bean special fertilizer, and then in adjustment reaction solution the content of nitrogen, phosphorus and potassium meet Kidney bean grow needed for ratio, the Kidney bean special fertilizer produced can be absorbed more fully by Kidney bean, with minimum fertilizers input, the Kidney bean that output is maximum, has significant economic worth.
3. the present invention produces in the process of Kidney bean special fertilizer does not have waste liquid to discharge, and can not bring pollution to environment, has the significant value of environmental protection, and meanwhile, its raw material availability is absolutely, makes the production cost of Kidney bean special fertilizer lower.
4. Kidney bean special fertilizer of the present invention is chemical combination state Chemical Mixed Fertilizer, by to parameter in production technique, namely be exactly temperature, the control of material concentration and proportioning, after making phosphoric acid and urea reaction, generate Ureaphil product, Ureaphil product itself has stronger acidity, and between phosphoric acid and urea, be the chemical combination state double salt be combined together to form by the mode of coordinate bond, also be fertile as crop in conventional art, and crop is to the specific absorption comparison urea of this chemical combination state double salt, volatile salt, the unitary such as ammonium nitrate, binary fertilizer specific absorption is a kind of chemical combination state special fertilizer all preferably, but, under the environment that this chemical combination state double salt exists at phosphoric acid, at the temperature of 80-250 DEG C, complicated decomposition polyreaction can be there is, Ureaphil is made to form (H
2pO
4)
-(H
2nCONH
3)
+two ions, (H
2nCONH
3)
+ion and phosphoric acid close, and be under the environment of 80-160 DEG C in temperature, formed
intermediate-ion and dihydrogen phosphate, and coordinate bond is formed between C and O, this intermediate-ion can form multielement intermediate-ion with centering element compound chelating, and then the compound electronegative with other can be continued or ion forms inner complex, improve constituent content in double salt, and then the nutrient content in the double salt of this ion existence can be adjusted, simultaneously, this inner complex can be hydrolyzed again and by crop, and then can provide fertilizer efficiency for crop effectively for a long time.
Embodiment
Conveniently those skilled in the art will recognize that the present invention will be further described below in conjunction with embodiment.Embodiment is only illustrating this invention, is not limitation of the invention, and the step not doing in embodiment to illustrate is all prior arts, is not described in detail at this.
The present invention carries out research and discussion by the mechanism of reacting phosphoric acid and carboxamide, and arrives in conjunction with prior art literature, and phosphoric acid and carboxamide react and generate Ureaphil, and its molecular formula is: CO (NH
2)
2.H
3pO
4under the environment of comparatively high temps, the chemical bond meeting dialysis between H and O in phosphoric acid, hydrogen ion is combined the ionic state formed containing positive charge with urea, the ion double salt making Ureaphil form a kind of positive and negative charge to attract mutually, its mechanism structural response following expression: CO (NH
2)
2.H
3pO
4→ (H
2pO
4)
-. (H
2nCONH
3)
+.
Under the environment that Ureaphil ion double salt exists at phosphoric acid, (H wherein
2nCONH
3)
+positive ion and phosphoric acid close, form the intermediate-ion of C → O coordinate bond, be (CO
5pN
2h
8)
+, and then make in Ureaphil intermediate containing a large amount of (H
2pO
4)
-(CO
5pN
2h
8)
+ion, when adding excessive and appropriate potassium ion, dihydrogen phosphate and potassium ion form potassium dihydrogen phosphate crystal and are precipitated, unnecessary potassium ion and (CO
5pN
2h
8)
+ionic reaction, and displace part NH
4 +, make in solution containing (CO
5pNH
4k)
+double salt ion, and analyze by detecting and control the content of N in solution, P, K element, the chemical combination state composite fertilizer containing N, P, K element can be obtained at heat drying.
The main chemical reactions equation that the present invention relates to is:
Reaction formula one:
CO(NH
2)
2+H
3PO
4→CO(NH
2)
2.H
3PO
4
Reaction formula two:
Reaction formula three:
Wherein, the dotted line between carbon atom and Sauerstoffatom represents to there is coordinate bond between C atom and O atom.
Reaction formula four:
Wherein, the dotted line between carbon atom and Sauerstoffatom represents to there is coordinate bond between C atom and O atom.
With embodiment, production method of the present invention is described further below:
Embodiment one
A kind of compound method of Kidney bean special fertilizer, be that 1.2:1 is added in reactor and mixes with mol ratio by phosphoric acid and carboxamide, then with the heat-up rate of 4 DEG C/min, the temperature of two mixtures is elevated to 120 DEG C, stirring reaction 130min, after temperature being cooled to 35 DEG C, centrifugation obtains intermediate again; Be 1:1.1 hybrid reaction in a kettle. by this intermediate and potassium hydroxide with mol ratio, take stirring velocity as 200r/min stirring reaction 60min, and the pH value regulating reaction is 8, after reaction terminates, obtain the slip of Nitrogen-and Phosphorus-containing potassium, this slip is placed in the process of cooling crystallizer circulation crystallization, detect simultaneously and analyze filtrate, when nitrogen content in filtrate be 5%, phosphorus content is 2.8%, potassium content is 5.2% time, stop crystallization also filtering, the filter cake obtained is potassium dihydrogen phosphate product; The first finished product that calcium sulfate, magnesium sulfate, zinc sulfate, borax and ammonium molybdate are adjusted to Kidney bean special fertilizer is added in the filtrate after filtration potassium primary phosphate, first finished product is placed in baker, heat-up rate is adopted to be that 5 DEG C/min is warming up to 25 DEG C, after dry 60min, adjustment moisture content is 5%, can obtain Kidney bean special fertilizer.
Embodiment two
A kind of compound method of Kidney bean special fertilizer, be that 1.4:1 is added in reactor and mixes with mol ratio by phosphoric acid and carboxamide, then with the heat-up rate of 4 DEG C/min, the temperature of two mixtures is elevated to 150 DEG C, stirring reaction 150min, after temperature being cooled to 45 DEG C, centrifugation obtains intermediate again; Be 1:1.1 hybrid reaction in a kettle. by this intermediate and potassium hydroxide with mol ratio, take stirring velocity as 250r/min stirring reaction 40min, and the pH value regulating reaction is 8.5, after reaction terminates, obtain the slip of Nitrogen-and Phosphorus-containing potassium, this slip is placed in the process of cooling crystallizer circulation crystallization, detect simultaneously and analyze filtrate, when nitrogen content in filtrate be 6%, phosphorus content is 3.1%, potassium content is 6% time, stop crystallization also filtering, the filter cake obtained is potassium dihydrogen phosphate product; The first finished product that calcium sulfate, magnesium sulfate, zinc sulfate, borax and ammonium molybdate are adjusted to Kidney bean special fertilizer is added in the filtrate after filtration potassium primary phosphate, first finished product is placed in baker, heat-up rate is adopted to be that 5 DEG C/min is warming up to 30 DEG C, after dry 40min, adjustment moisture content is 3%, can obtain Kidney bean special fertilizer.
Embodiment three
A kind of compound method of Kidney bean special fertilizer, be that 1.3:1 is added in reactor and mixes with mol ratio by phosphoric acid and carboxamide, then with the heat-up rate of 4 DEG C/min, the temperature of two mixtures is elevated to 140 DEG C, stirring reaction 140min, after temperature being cooled to 35 DEG C, centrifugation obtains intermediate again; Be 1:1.2 hybrid reaction in a kettle. by this intermediate and potassium hydroxide with mol ratio, take stirring velocity as 240r/min stirring reaction 50min, and the pH value regulating reaction is 8.5, after reaction terminates, obtain the slip of Nitrogen-and Phosphorus-containing potassium, this slip is placed in the process of cooling crystallizer circulation crystallization, detect simultaneously and analyze filtrate, when nitrogen content in filtrate be 5.5%, phosphorus content is 3%, potassium content is 5.5% time, stop crystallization also filtering, the filter cake obtained is potassium dihydrogen phosphate product; The first finished product that calcium sulfate, magnesium sulfate, zinc sulfate, borax and ammonium molybdate are adjusted to Kidney bean special fertilizer is added in the filtrate after filtration potassium primary phosphate, first finished product is placed in baker, heat-up rate is adopted to be that 5 DEG C/min is warming up to 28 DEG C, after dry 50min, adjustment moisture content is 4%, can obtain Kidney bean special fertilizer.
Below in conjunction with test example, the technique effect of technical solution of the present invention and the quality of potassium dihydrogen phosphate product of producing are verified:
Test example one
According to GBT268-1996 " People's Republic of China's chemical industry standard " feed grade potassium primary phosphate test experience method, detect the quality of the product that embodiments of the invention one, embodiment two and embodiment three are produced, its result is as shown in table 1.
The quality examination of table 1 traditional method and embodiments of the invention production potassium dihydrogen phosphate product and the comparative result of its cost:
| ? | Purity >=% | Moisture≤% | As≤％ | Pb≤％ |
| Embodiment one | 98.2 | 0.35 | 0.00072 | 0.0018 |
| Embodiment two | 98.8 | 0.36 | 0.00076 | 0.0017 |
| Embodiment three | 98.4 | 0.36 | 0.00065 | 0.0015 |
| Standard | 98 | 0.5 | 0.001 | 0.002 |
As can be seen from the above table, the standard of the potassium dihydrogen phosphate product that technical scheme of the present invention is produced can close to feed grade potassium dihydrogen phosphate product, and the purity of product is also higher, has significant progressive.
Test example two
Choose one piece of vacant lot of 800 square metres, be equally divided into four parts, every part 200 square metres, and be designated as No. 1 ground, No. 2 ground, No. 3 ground and No. 4 ground.The phaseolus vulgaris seeds choosing full seed, respectively 1,2,3 and No. 4 plantation on the ground, is dressed seed with nitragin before plantation, and at pool bottom application foot farm manure.For Guizhou weather condition, the time of plantation is March, and the line-spacing of plantation is 1 meter, and spacing in the rows is 0.4 meter, and 3 phaseolus vulgaris seeds are planted on every pool.Respectively execute disposable fertilizer in early flowering season of Kidney bean and fruiting period, twice rate of fertilizer application is identical and be 4kg.Wherein, the fertilizer of the embodiment of the present invention one is all used on No. 1 ground for twice, the fertilizer of the embodiment of the present invention two is all used on No. 2 ground for twice, the fertilizer of the embodiment of the present invention three is all used on No. 3 ground for twice, high-nitrogen compound fertilizer material is used on No. 4 ground, in this high-nitrogen compound fertilizer, nitrogen content is 25%, and phosphorus content is 15%, and potassium content is 11%.
Experimental result is: gather in the crops the tender pod 598kg of Kidney bean on the ground for No. 1, No. 2 gathers in the crops the tender pod 613kg of Kidney bean, and No. 3 tender pod 624kg of ground results Kidney bean, gather in the crops the tender pod 505kg of Kidney bean by No. 4.As can be seen here, to the effect of increasing production of Kidney bean clearly, every mu of ground approximately increases production 350kg to this Kidney bean composite fertilizer special.Therefore, this Kidney bean special fertilizer is applicable to promoting the use of.
Claims (8)
1. a compound method for Kidney bean special fertilizer, is characterized in that: comprise the following steps:
(1) raw material hybrid reaction: be (1.2-1.4) with carboxamide with mol ratio by phosphoric acid: 1 is added in reactor and mixes, then with the heat-up rate of 4 DEG C/min, the temperature of two mixtures is elevated to 120-150 DEG C, stirring reaction 130-150min, after temperature being cooled to 35-45 DEG C, centrifugation obtains intermediate again;
(2) potassium primary phosphate is prepared: be 1:(1.1-1.3 by the intermediate that obtains in step (1) and alkaline potassium salt with mol ratio) hybrid reaction in a kettle., take stirring velocity as 200-250r/min stirring reaction 40-60min, and the pH value regulating reaction is 8-9, after reaction terminates, obtain the slip of Nitrogen-and Phosphorus-containing potassium, this slip is placed in the process of cooling crystallizer circulation crystallization, detect simultaneously and analyze filtrate, when nitrogen content in filtrate is 5-6%, phosphorus content is 2.8-3.1%, when potassium content is 5.2-6%, stop crystallization and filter, the filter cake obtained is potassium dihydrogen phosphate product,
(3) Kidney bean special fertilizer is prepared: in the filtrate filter potassium primary phosphate in step (2) after, add the first finished product that other medium trace element compounds are adjusted to Kidney bean special fertilizer, first finished product is placed in baker, heat-up rate is adopted to be that 5 DEG C/min is warming up to 25-30 DEG C, after dry 40-60min, adjustment moisture content is 3-5%, can obtain Kidney bean special fertilizer.
2. the compound method of Kidney bean special fertilizer according to claim 1, is characterized in that: described intermediate is Ureaphil.
3. the compound method of Kidney bean special fertilizer according to claim 1, it is characterized in that: in described step (1), be that 1.3:1 is added in reactor and mixes with mol ratio by phosphoric acid and carboxamide, then with the heat-up rate of 4 DEG C/min, the temperature of two mixtures is elevated to 140 DEG C, stirring reaction 140min, after temperature being cooled to 40 DEG C, centrifugation obtains intermediate again.
4. the compound method of Kidney bean special fertilizer according to claim 1, is characterized in that: in described filtrate, nitrogen content is 5.5%, phosphorus content is 3%, potassium content is 5.5%.
5. the compound method of Kidney bean special fertilizer according to claim 1, is characterized in that: in described step (2), and when intermediate and alkaline potassium salt react, stirring velocity is 240r/min, and the reaction times is 50min, and the pH value of reaction soln is 8.5.
6. the compound method of Kidney bean special fertilizer according to claim 1, is characterized in that: described alkaline potassium salt is potassium hydroxide.
7. the compound method of Kidney bean special fertilizer according to claim 1, is characterized in that: described medium trace element compound is calcium sulfate, magnesium sulfate, zinc sulfate, borax and ammonium molybdate.
8. the compound method of Kidney bean special fertilizer according to claim 1, is characterized in that: the mol ratio of described intermediate and alkaline potassium salt is 1:1.2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410477920.2A CN104261373B (en) | 2014-09-19 | 2014-09-19 | A kind of compound method of Kidney bean special fertilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410477920.2A CN104261373B (en) | 2014-09-19 | 2014-09-19 | A kind of compound method of Kidney bean special fertilizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104261373A true CN104261373A (en) | 2015-01-07 |
| CN104261373B CN104261373B (en) | 2017-07-25 |
Family
ID=52153003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410477920.2A Expired - Fee Related CN104261373B (en) | 2014-09-19 | 2014-09-19 | A kind of compound method of Kidney bean special fertilizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104261373B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1343186A (en) * | 1999-03-18 | 2002-04-03 | Oms投资公司 | Processes for preparing granular composite fertilizer compositions and products produced thereby |
| CN103803518A (en) * | 2014-01-24 | 2014-05-21 | 贵阳中化开磷化肥有限公司 | Method for preparing monopotassium phosphate by using wet-process phosphoric acid |
-
2014
- 2014-09-19 CN CN201410477920.2A patent/CN104261373B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1343186A (en) * | 1999-03-18 | 2002-04-03 | Oms投资公司 | Processes for preparing granular composite fertilizer compositions and products produced thereby |
| CN103803518A (en) * | 2014-01-24 | 2014-05-21 | 贵阳中化开磷化肥有限公司 | Method for preparing monopotassium phosphate by using wet-process phosphoric acid |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104261373B (en) | 2017-07-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104291903A (en) | Method for preparing dendrobium officinale nutrient fertilizer | |
| CN104261374B (en) | A kind of production method preparing primary ammonium phosphate by-product Radix Astragali special fertilizer | |
| CN104261373A (en) | Preparation method of special fertilizer for kidney bean | |
| CN104249998B (en) | Method for co-producing composite fertilizer special for peanuts during preparation of monopotassium phosphate | |
| CN104249999B (en) | A kind of broad bean strengthens fertile compound method | |
| CN104291904B (en) | A kind of compound method of mung bean special fertilizer | |
| CN104591830A (en) | Method for preparing special fertilizer for barley | |
| CN104310350B (en) | Method for preparing special fertilizer for pears, and preparing potassium dihydrogen phosphate as byproduct | |
| CN104310354B (en) | A kind of compound method of special fertilizer for carrot | |
| CN104557223A (en) | Preparation method of fertilizer special for bananas | |
| CN104261375A (en) | Production method for preparing ammonium dihydrogen phosphate and byproduct special fertilizer for radix scutellariae | |
| CN104310348A (en) | Method for simultaneously preparing potassium dihydrogen phosphate and special fertilizer for Phyllostachys edulis | |
| CN104310353B (en) | A kind of method preparing sodium dihydrogen phosphate by-product Fructus Rosae Normalis special fertilizer | |
| CN104311185A (en) | Preparation method of special compound fertilizer for phaseolus calcaratus | |
| CN104310355B (en) | A kind of method preparing potassium dihydrogen phosphate by-product special fertilizer for pitaya | |
| CN104310360B (en) | Method for simultaneously preparing sodium dihydrogen phosphate and special composite fertilizer for Boehmeria nivea | |
| CN104310351B (en) | A kind of compound method of fertilizer special for cotton | |
| CN104291303B (en) | A kind of method preparing potassium dihydrogen phosphate coproduction Semen Sesami composite fertilizer special | |
| CN104250000B (en) | Method for co-producing fertilizer special for white paeony root during preparation of monopotassium phosphate | |
| CN104326460B (en) | Method for preparation of sodium dihydrogen phosphate and coproduction of special compound fertilizer for bighead atractylodes rhizome | |
| CN104276555B (en) | A kind of method preparing sodium dihydrogen phosphate by-product Semen Fagopyri Esculenti special fertilizer | |
| CN104326459B (en) | A kind of method preparing sodium dihydrogen phosphate coproduction Chinese chestnut tree composite fertilizer special | |
| CN104310331B (en) | A kind of production method preparing ammonium phosphate by-product Arillus Longan special fertilizer | |
| CN104291299A (en) | Method for preparing sodium dihydrogen phosphate and coproducing special compound fertilizer for cowpea | |
| CN104310338B (en) | Method for preparing ammonium dihydrogen phosphate and preparing special fertilizer for honeysuckle flower as byproduct |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: Xifeng County in Guizhou Province, Guiyang city town 551109 Applicant after: Guiyang Kailin Chemical Co. Ltd. Applicant after: Guizhou Ke Xinhua smelting company limited Applicant after: Guizhou University Address before: Xifeng County in Guizhou Province, Guiyang city town 551109 Applicant before: Zhonghuakai Phosphorous Chemical Fertilizer Co., Ltd., Guiyang Applicant before: Guizhou Ke Xinhua smelting company limited Applicant before: Guizhou University |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170725 Termination date: 20190919 |