Amino acid water-soluble fertilizer and production process thereof

Abstract

The invention discloses an amino acid water-soluble fertilizer and a production process thereof. The amino acid water-soluble fertilizer comprises the following components in parts by weight: 12-30 parts of nitrogen, 5-18 parts of phosphorus, 5-15 parts of potassium, 0.1-6 parts of sulfur, 20-24 parts of potassium fulvate, 6-8 parts of humic acid, 8-10 parts of amino acid, 0.1-0.5 part of a nitrification inhibitor, 0.01-0.2 part of trace elements and 200-300 parts of water. The amino acid and fulvic acid are doubly chelated with medium trace elements, the humic acid is used as a masking agent to produce the medium trace element chelate, the prepared amino acid water-soluble fertilizer is high in element utilization rate and can be degraded in the natural environment, meanwhile, the mixing efficiency of raw materials in the production process is high, and the production cost is low. Raw material agglomeration and non-uniform stirring caused by directly adding the potassium fulvate, the humic acid and the amino acid into the tank body are avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of fertilizer production, and in particular relates to an amino acid water-soluble fertilizer and a production process thereof. Background Art

[0002] Trace elements are essential nutrients for the normal growth of crops. Fertilizers containing medium and trace elements are generally prepared by adding soluble inorganic salts, but the antagonism between the elements will greatly reduce the fertilizer efficiency and affect the absorption effect of plants. Trace fertilizers containing 6 elements of boron, manganese, copper, zinc, molybdenum, and iron, except for boron that can chelate with sugars in plants, the other 5 elements need to be artificially chelated into corresponding chelated trace fertilizers to improve their utilization rate.

[0003] At present, the commonly used chelating agents in the fertilizer industry mainly include EDTA series, diethylenetriamine pentaacetic acid (DTPA), 1,2-cyclohexanediaminetetraacetic acid (CDTA), humic acid series N-β-hydroxyethylethylenediaminetriacetic acid (HEDTA), ethylenediamine di-o-hydroxyphenylacetic acid (EDDHA), amino acid series ethylenediamine disuccinic acid (EDDS), lignin sulfonic acid series aminosuccinic acid (IDHA-D, L), citric acid, sugar alcohol, tartaric acid, etc. However, traditional chelating agent products are difficult to be biodegraded after long-term use, and generally accumulate in the environment. They have been detected in rivers, lakes, soil and water treatment processes. Therefore, the development of cheap, high-quality and environmentally friendly chelating agents can greatly improve the application of compound fertilizers containing trace elements. Summary of the invention

[0004] In order to solve the deficiencies mentioned in the above background technology, the purpose of the present invention is to provide an amino acid water-soluble fertilizer and a production process thereof, wherein the trace element chelate is produced by dual chelation of trace elements by amino acids and fulvic acid, and humic acid is used as a masking agent. The prepared amino acid water-soluble fertilizer has high element utilization rate and can be degraded in the natural environment.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] The invention discloses an amino acid water-soluble fertilizer, which comprises the following components in parts by weight: 12 to 30 parts of nitrogen, 5 to 18 parts of phosphorus, 5 to 15 parts of potassium, 0.1 to 6 parts of sulfur, 20 to 24 parts of potassium humate, 6 to 8 parts of humic acid, 8 to 10 parts of amino acids, 0.1 to 0.5 parts of nitrification inhibitor, 0.01 to 0.2 parts of trace elements and 200 to 300 parts of water.

[0007] More preferably, the amino acid is one or more of arginine, lysine, leucine, serine or polyaspartic acid.

[0008] More preferably, the nitrification inhibitor is one of dicyandiamide, 2-chloro-6-(trichloromethyl)pyridine or 3,4-dimethylpyrazole phosphate.

[0009] More preferably, the trace element is one or more of iron, manganese, zinc, copper, calcium, magnesium, molybdenum or boron.

[0010] The present invention also discloses a production process of amino acid water-soluble fertilizer, comprising the following steps:

[0011] S1. Divide water into four parts: A%, B%, C%, and D%, and add potassium fulvic acid, humic acid, and amino acid into A%, B%, and C% water respectively to dissolve and obtain corresponding aqueous solutions;

[0012] S2. Add the raw materials of nitrogen, phosphorus, potassium, sulfur and trace elements into a mixing kettle, add D% of water and stir, control the stirring shaft speed to 120-200r / min and stir for 3-5min, then stir in reverse at the same speed for 3-5min, and repeat this cycle for 20-30min until the raw materials of nitrogen, phosphorus, potassium, sulfur and trace elements are fully dissolved;

[0013] S3, add the amino acid solution into the reflux tube through the rotary joint and the stirring shaft, control the stirring shaft speed to 300-450r / min and stir for 3-5min, then stir in the reverse direction at the same speed for 3-5min, and repeat this cycle for 20-30min. After the stirring is completed, move the reflux tube upward by 5-10cm;

[0014] S4. Add the potassium humate solution into the reflux pipe through the rotary joint and the stirring shaft, control the stirring shaft speed to 300-450r / min and stir for 3-5min, then stir in the reverse direction at the same speed for 3-5min, and repeat this cycle for 20-30min. After stirring, move the reflux pipe upward by 5-10cm.

[0015] S5. Add the humic acid solution into the reflux pipe through the rotary joint and the stirring shaft, control the stirring shaft speed to 300-450 r / min and stir for 3-5 min, then stir in the reverse direction at the same speed for 3-5 min, and repeat this cycle for 20-30 min to obtain the amino acid water-soluble fertilizer.

[0016] Further preferably, in step S1, A%+B%+C%+D%=100%, potassium humate is first dissolved in a portion of water until the viscosity of the potassium humate solution is ≤50 mPa·s, thereby obtaining A% of water, and then humic acid is dissolved in a portion of water until the viscosity of the humic acid solution is ≤50 mPa·s, thereby obtaining B% of water, and finally amino acids are dissolved in a portion of water until the viscosity of the amino acid solution is ≤50 mPa·s, thereby obtaining C% of water, then the amount of water D% used to dissolve the raw materials of nitrogen, phosphorus, potassium, sulfur and trace elements = 100%-A%-B%-C%.

[0017] Beneficial effects of the present invention:

[0018] The present invention utilizes the huge surface activity and the chelating characteristics of amino acids with strong adsorption and retention capabilities, and forms an organic-inorganic complex with trace elements (calcium, magnesium, iron, copper, manganese, zinc, boron, molybdenum, etc.) through chelation. The organic-inorganic complex can not only maintain the slow release and full utilization of a large number of elements, but also ensure the stability and long-term effect of trace elements. Sodium fulvic acid is used as an auxiliary chelating agent to enhance the oxidase activity in the plant body and promote other metabolic activities, enhance crop stress resistance, and improve soil aggregate structure. The strong complexing ability of sodium fulvic acid can improve the absorption and operation ability of plant trace elements by adding an appropriate amount of sodium fulvic acid, so that it can be better used by plants and enhance its disease resistance. The effect of humic acid in improving soil aggregate structure is utilized, and it is used as a masking agent after different chelated elements are prepared in proportion.

[0019] In the amino acid water-soluble fertilizer production process of the present invention, potassium humate, humic acid and amino acid are firstly dissolved into a low-viscosity solution with part of water, and then the remaining water is used to dissolve raw materials of nitrogen, phosphorus, potassium, sulfur and trace elements, and then the potassium humate, humic acid and amino acid solutions are directly added to a reflux pipe in sequence through a rotary joint and a stirring shaft to be mixed with the raw materials flowing upward or downward in the reflux pipe, so that the liquid in the tank body always maintains a low viscosity, greatly improving the mixing efficiency of various raw materials, and also avoiding the agglomeration of raw materials and uneven stirring caused by directly adding potassium humate, humic acid and amino acid into the tank body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure of the mixing kettle of the present invention;

[0022] Figure 2 is a cross-sectional view of a return pipe of a mixing kettle of the present invention;

[0023] Figure 3 The present invention Figure 2 Enlarged schematic diagram of position A.

[0024] In the figure: 1-tank body, 2-sealing cover, 3-support leg, 4-reflux pipe, 5-stirring shaft, 6-turbine, 7-stirring rod, 8-stirring blade, 9-first motor, 10-rotating joint, 11-liquid inlet pipe, 12-liquid outlet pipe, 13-feeding port, 14-connecting rod, 15-threaded rod, 16-guide rod, 17-second motor, 18-mounting frame, 20-driving hole, 21-slide groove, 22-spline, 23-liquid inlet hole. DETAILED DESCRIPTION

[0025] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Example 1

[0027] An amino acid water-soluble fertilizer comprises the following components in parts by weight: 12 parts of nitrogen, 18 parts of phosphorus, 5 parts of potassium, 6 parts of sulfur, 20 parts of potassium humate, 8 parts of humic acid, 3 parts of arginine, 5 parts of lysine, 0.1 part of dicyandiamide, 0.05 part of iron, 0.02 part of manganese, 0.04 part of zinc, 0.01 part of copper, 0.02 part of magnesium, 0.005 part of molybdenum, and 200 parts of water.

[0028] The production process of the above amino acid water-soluble fertilizer comprises the following steps:

[0029] S1, dissolving potassium humate in 40 parts of water to obtain a potassium humate solution with a viscosity of 30.5 mPa·s, dissolving humic acid in 50 parts of water to obtain a humic acid solution with a viscosity of 48.6 mPa·s, and dissolving amino acids in 40 parts of water to obtain an amino acid solution with a viscosity of 40.3 mPa·s;

[0030] S2. Add the raw materials of nitrogen, phosphorus, potassium, sulfur and trace elements into the mixing kettle, add 70 parts of water and stir, control the stirring shaft speed to 120r / min and stir for 3 minutes, then stir in the reverse direction at the same speed for 3 minutes, and repeat this cycle for 30 minutes until the raw materials of nitrogen, phosphorus, potassium, sulfur and trace elements are fully dissolved.

[0031] S3, add the amino acid solution into the reflux tube through the rotary joint and the stirring shaft, control the stirring shaft speed to 300r / min and stir for 5min, then stir in the reverse direction at the same speed for 5min, and repeat this cycle for 30min. After the stirring is completed, move the reflux tube upward by 5cm;

[0032] S4. Add the potassium humate solution into the reflux pipe through the rotary joint and the stirring shaft, control the stirring shaft speed to 300r / min and stir for 35min, then stir in the reverse direction at the same speed for 5min, and repeat this cycle for 30min. After stirring, move the reflux pipe upward by 5cm.

[0033] S5. Add the humic acid solution into the reflux pipe through the rotary joint and the stirring shaft, control the stirring shaft speed to 300r / min and stir for 5min, then reversely stir for 5min at the same speed, and repeat this cycle for 30min to obtain the amino acid water-soluble fertilizer.

[0034] Example 2

[0035] An amino acid water-soluble fertilizer comprises the following components in parts by weight: 30 parts of nitrogen, 5 parts of phosphorus, 15 parts of potassium, 0.2 parts of sulfur, 24 parts of potassium humate, 6 parts of humic acid, 4 parts of arginine, 6 parts of leucine, 0.5 parts of 2-chloro-6-(trichloromethyl)pyridine, 0.01 parts of iron, 0.01 parts of manganese, 0.01 parts of zinc, 0.005 parts of calcium, 0.01 parts of magnesium, 0.005 parts of boron, and 300 parts of water.

[0036] The production process of the above amino acid water-soluble fertilizer comprises the following steps:

[0037] S1, dissolving potassium humate in 50 parts of water to obtain a potassium humate solution with a viscosity of 25.9 mPa·s, dissolving humic acid in 50 parts of water to obtain a humic acid solution with a viscosity of 42.8 mPa·s, and dissolving amino acids in 50 parts of water to obtain an amino acid solution with a viscosity of 41.2 mPa·s;

[0038] S2. Add the raw materials of nitrogen, phosphorus, potassium, sulfur and trace elements into the mixing kettle, add 150 parts of water and stir, control the stirring shaft speed to 200r / min and stir for 3 minutes, then stir in the reverse direction at the same speed for 3 minutes, and repeat this cycle for 20 minutes until the raw materials of nitrogen, phosphorus, potassium, sulfur and trace elements are fully dissolved.

[0039] S3, add the amino acid solution into the reflux tube through the rotary joint and the stirring shaft, control the stirring shaft speed to 450r / min and stir for 3min, then stir in the reverse direction at the same speed for 3min, and repeat this cycle for 20min. After the stirring is completed, move the reflux tube upward by 10cm;

[0040] S4. Add the potassium humate solution into the reflux tube through the rotary joint and the stirring shaft, control the stirring shaft speed to 450r / min and stir for 3 minutes, then stir in the reverse direction at the same speed for 3 minutes, and repeat this cycle for 20 minutes. After stirring, move the reflux tube upward by 10cm.

[0041] S5. Add the humic acid solution into the reflux pipe through the rotary joint and the stirring shaft, control the stirring shaft speed to 450r / min and stir for 3min, then reversely stir for 3min at the same speed, and repeat this cycle for 20min to obtain the amino acid water-soluble fertilizer.

[0042] Example 3

[0043] An amino acid water-soluble fertilizer comprises the following components in parts by weight: 25 parts of nitrogen, 12 parts of phosphorus, 10 parts of potassium, 4 parts of sulfur, 22 parts of potassium humate, 7 parts of humic acid, 5 parts of serine, 4 parts of polyaspartic acid, 0.2 parts of 3,4-dimethylpyrazole phosphate, 0.03 parts of iron, 0.02 parts of manganese, 0.02 parts of copper, 0.02 parts of molybdenum, 0.01 parts of boron, and 250 parts of water.

[0044] The production process of the above amino acid water-soluble fertilizer comprises the following steps:

[0045] S1, dissolving potassium humate in 50 parts of water to obtain a potassium humate solution with a viscosity of 28.4 mPa·s, dissolving humic acid in 50 parts of water to obtain a humic acid solution with a viscosity of 44.8 mPa·s, and dissolving amino acids in 50 parts of water to obtain an amino acid solution with a viscosity of 38.2 mPa·s;

[0046] S2. Add the raw materials of nitrogen, phosphorus, potassium, sulfur and trace elements into the mixing kettle, add 100 parts of water and stir, control the stirring shaft speed to 160r / min and stir for 4 minutes, then stir in the reverse direction at the same speed for 4 minutes, and repeat this cycle for 25 minutes until the raw materials of nitrogen, phosphorus, potassium, sulfur and trace elements are fully dissolved.

[0047] S3, add the amino acid solution into the reflux tube through the rotary joint and the stirring shaft, control the stirring shaft speed to 380r / min and stir for 4 minutes, then stir in the reverse direction at the same speed for 4 minutes, and repeat this cycle for 25 minutes. After the stirring is completed, move the reflux tube upward by 8cm;

[0048] S4. Add the potassium humate solution into the reflux tube through the rotary joint and the stirring shaft, control the stirring shaft speed to 380r / min and stir for 4 minutes, then stir in the reverse direction at the same speed for 4 minutes, and repeat this cycle for 25 minutes. After stirring, move the reflux tube upward by 8cm.

[0049] S5. Add the humic acid solution into the reflux pipe through the rotary joint and the stirring shaft, control the stirring shaft speed to 380r / min and stir for 4min, then reversely stir for 4min at the same speed, and repeat this cycle for 25min to obtain the amino acid water-soluble fertilizer.

[0050] The mixing kettle structure used in the embodiment of the present invention is as follows: Figures 1 to 3As shown, it includes a tank body 1, a sealing cover 2 is fixedly installed on the top of the tank body 1, a supporting leg 3 is fixedly installed on the bottom of the tank body 1, a reflux pipe 4 is arranged inside the tank body 1, the reflux pipe 4 is slidably connected to the inner wall of the tank body 1, a stirring shaft 5 is penetrated inside the reflux pipe 4, the upper end of the stirring shaft 5 is rotatably connected to the sealing cover 2, turbines 6 are fixedly installed at the open ends of the upper and lower ends of the reflux pipe 4, the turbine 6 is driven by the stirring shaft 5, a stirring rod 7 is fixedly installed on the lower end of the stirring shaft 5, stirring blades 8 are fixedly installed at both ends of the stirring rod 7, the stirring blades 8 and the stirring rod 7 form a certain angle, the upper end of the stirring shaft 5 is meshed with the output shaft of the first motor 9 through a gear, a rotating joint 10 is fixedly installed on the top of the stirring shaft 5, a liquid inlet pipe 11 is fixedly installed on the upper end of the side wall of the tank body 1, a liquid outlet pipe 12 is fixedly installed in the middle of the bottom of the tank body 1, and a feed port 13 is opened on the surface of the sealing cover 2.

[0051] A connecting rod 14 is symmetrically fixed to the upper end of the outer wall of the reflux pipe 4, and a threaded rod 15 and a guide rod 16 are vertically provided at the inner wall of the tank body 1 corresponding to the connecting rod 14. The threaded rod 15 and the guide rod 16 are both rotatably connected to the inner wall of the tank body 1, and the threaded rod 15 and the guide rod 16 respectively penetrate the connecting rods 14 on both sides of the reflux pipe 4, wherein the threaded rod 15 is threadedly connected to the connecting rod 14, and the guide rod 16 is slidably connected to the connecting rod 14. The upper end of the threaded rod 15 is fixedly connected to the output shaft of the second motor 17, and the second motor 17 is fixedly installed on the sealing cover 2. The threaded rod 15 is driven to rotate by the second motor 17, thereby driving the reflux pipe 4 to move up and down, and then adjusting the height of the reflux pipe 4 to adapt to the changes in the liquid level caused by the continuous addition of raw materials during the preparation process of the amino acid water-soluble fertilizer.

[0052] Mounting frames 18 are provided at the open ends of the upper and lower ends of the reflux pipe 4, and the mounting frames 18 are fixedly connected to the inner wall of the reflux pipe 4. The mounting frame 18 is rotatably connected to the turbine 6 on one side close to the inside of the reflux pipe 4. A driving hole 20 is penetrated in the middle of the turbine 6, and the stirring shaft 5 penetrates the driving hole 20 in the middle of the turbine 6. A slide groove 21 is symmetrically provided on the inner wall of the driving hole 20. A spline 22 is fixedly installed on the surface of the stirring shaft 5 corresponding to the driving hole 20. When the turbine 6 moves up and down with the reflux pipe 4, the spline 22 and the slide groove 21 slide relative to each other. When the stirring shaft 5 rotates, the spline 22 and the slide groove 21 cooperate to drive the turbine 6 to rotate, thereby realizing that the stirring shaft 5 can drive the moving turbine 6 to rotate.

[0053] The stirring shaft 5 is a hollow shaft. A plurality of liquid inlet holes 23 are provided on the surface of the stirring shaft 5 in the reflux pipe 4. The rotary joint 10 is externally connected to a feed pump. The amino acid solution, potassium fulvic acid solution and humic acid solution are all transported to the liquid inlet holes 23 through the rotary joint and the internal pipeline of the stirring shaft 5 to flow out, thereby directly adding to the inside of the reflux pipe 4 and mixing with the upward or downward fluid in the reflux pipe 4.

[0054] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. An amino acid water-soluble fertilizer, characterized in that: The invention comprises the following components in parts by weight: 12 to 30 parts of nitrogen, 5 to 18 parts of phosphorus, 5 to 15 parts of potassium, 0.1 to 6 parts of sulfur, 20 to 24 parts of potassium humate, 6 to 8 parts of humic acid, 8 to 10 parts of amino acid, 0.1 to 0.5 parts of nitrification inhibitor, 0.01 to 0.2 parts of trace elements and 200 to 300 parts of water.

2. The amino acid water-soluble fertilizer according to claim 1, characterized in that The amino acid is one or more of arginine, lysine, leucine, serine or polyaspartic acid.

3. The amino acid water-soluble fertilizer according to claim 1, characterized in that The nitrification inhibitor is one of dicyandiamide, 2-chloro-6 (trichloromethyl) pyridine or 3,4-dimethylpyrazole phosphate.

4. The amino acid water-soluble fertilizer according to claim 1, characterized in that The trace elements are one or more of iron, manganese, zinc, copper, calcium, magnesium, molybdenum or boron.

5. The production process of the amino acid water-soluble fertilizer according to any one of claims 1 to 4, characterized in that: The following steps are involved: S1. Divide water into four parts: A%, B%, C%, and D%, and add potassium fulvic acid, humic acid, and amino acid into A%, B%, and C% water respectively to dissolve and obtain corresponding aqueous solutions; S2. Add the raw materials of nitrogen, phosphorus, potassium, sulfur and trace elements into a mixing kettle, add D% of water and stir, control the stirring shaft speed to 120-200r / min and stir for 3-5min, then stir in reverse at the same speed for 3-5min, and repeat this cycle for 20-30min until the raw materials of nitrogen, phosphorus, potassium, sulfur and trace elements are fully dissolved; S3, add the amino acid solution into the reflux tube through the rotary joint and the stirring shaft, control the stirring shaft speed to 300-450r / min and stir for 3-5min, then stir in the reverse direction at the same speed for 3-5min, and repeat this cycle for 20-30min. After the stirring is completed, move the reflux tube upward by 5-10cm; S4. Add the potassium humate solution into the reflux pipe through the rotary joint and the stirring shaft, control the stirring shaft speed to 300-450r / min and stir for 3-5min, then stir in the reverse direction at the same speed for 3-5min, and repeat this cycle for 20-30min. After stirring, move the reflux pipe upward by 5-10cm. S5. Add the humic acid solution into the reflux pipe through the rotary joint and the stirring shaft, control the stirring shaft speed to 300-450 r / min and stir for 3-5 min, then stir in the reverse direction at the same speed for 3-5 min, and repeat this cycle for 20-30 min to obtain the amino acid water-soluble fertilizer.

6. The production process of the amino acid water-soluble fertilizer according to claim 5, characterized in that: In step S1, A%+B%+C%+D%=100%, potassium humate is first dissolved in a portion of water until the viscosity of the potassium humate solution is ≤50 mPa·s, thereby obtaining A% of water, and then humic acid is dissolved in a portion of water until the viscosity of the humic acid solution is ≤50 mPa·s, thereby obtaining B% of water, and finally amino acids are dissolved in a portion of water until the viscosity of the amino acid solution is ≤50 mPa·s, thereby obtaining C% of water, then the amount of water used to dissolve the raw materials of nitrogen, phosphorus, potassium, sulfur and trace elements D%=100%-A%-B%-C%.

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