A bioenergy-accumulating slow-release fertilizer and its preparation process

Abstract

The invention belongs to the technical field of slow-release fertilizer preparation, in particular to a bio-energy-accumulating and synergistic slow-release fertilizer and a preparation process thereof. Aiming at the problem that it is difficult for the existing slow-release fertilizer to completely match the fertilizer absorption law of crops in different growth and development periods in nutrient release, resulting in insufficient nutrient supply of crops in certain periods and inability to effectively improve soil structure and environment, the following scheme is proposed, which includes raw materials, and the raw materials include the following components in parts by weight: 20-80 parts of polyvinyl alcohol. The invention can effectively improve soil structure and environment and significantly improve fertilizer utilization rate by using polyvinyl alcohol, polyethylene, polyamide, polyurea, paraffin, polyglutamic acid, zinc polyaspartate, nitrification inhibitor, urease, fulvic acid, humus, amino acid, actinomycetes, spirochetes, ammonium magnesium phosphate, polypropylene, polyvinyl chloride, urea phosphate, talcum powder, sulfur, biochar, zeolite and diatomaceous earth.

Description

Technical Field

[0001] The invention relates to the technical field of slow-release fertilizer preparation, in particular to a bio-energy-accumulating and synergistic slow-release fertilizer and a preparation process thereof. Background Art

[0002] Fertilizer is a substance applied to plant tissue or soil to provide nutrients. It can be natural or artificial, and the main nutrients it contains include three macronutrients: nitrogen, phosphorus, and potassium. Slow-release fertilizer is a fertilizer that uses specific technology to slowly release nutrients in the soil to meet the continuous absorption and utilization of crops. The nutrient compounds in slow-release fertilizers are released slowly in the soil, or their release rate can be controlled to a certain extent. This control is achieved by changing the chemical composition of the fertilizer or coating its surface with semi-permeable or impermeable substances. There are many varieties of agricultural fertilizers, which are widely used in agricultural production, and the application amount is increasing. However, the fertilizer utilization is low and the environment is polluted. Conventional liquid fertilizers cannot achieve the expected economic benefits due to many factors such as cumbersome use methods.

[0003] In the existing technology, it is difficult for slow-release fertilizers to release nutrients in a way that is completely consistent with the fertilizer absorption patterns of crops in different growth and development stages, resulting in insufficient nutrient supply to crops in certain periods and inability to effectively improve soil structure and environment. To this end, we have proposed a bio-energy-enhancing slow-release fertilizer and its preparation process to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art that slow-release fertilizers are difficult to release nutrients in accordance with the fertilizer absorption law of crops in different growth and development periods, resulting in insufficient nutrient supply to crops in certain periods and inability to effectively improve soil structure and environment, and to propose a bio-energy-accumulating and synergistic slow-release fertilizer and its preparation process.

[0005] The present application provides a bio-energy-accumulating slow-release fertilizer and a preparation process thereof using the following technical solutions:

[0006] A bioenergy-accumulating and synergistic slow-release fertilizer comprises raw materials, wherein the raw materials comprise the following components in parts by weight: 20-80 parts of polyvinyl alcohol, 20-70 parts of polyethylene, 20-50 parts of polyamide, 20-60 parts of polyurea, 10-30 parts of paraffin, 20-40 parts of polyglutamic acid, 10-30 parts of zinc polyaspartate, 5-15 parts of nitrification inhibitor, 30-50 parts of urease, 1-8 parts of fulvic acid, 1-8 parts of humus, 1-8 parts of amino acids, 2-8 parts of actinomycetes, 2-8 parts of spirochetes, 8-20 parts of magnesium ammonium phosphate, 10-30 parts of polypropylene, 5-25 parts of polyvinyl chloride, 10-20 parts of urea phosphate, 5-15 parts of talc, 5-15 parts of sulfur, 2-10 parts of biochar, 2-10 parts of zeolite and 2-10 parts of diatomaceous earth.

[0007] Furthermore, the raw materials include the following components in parts by weight: 30-50 parts of polyvinyl alcohol, 30-60 parts of polyethylene, 30-40 parts of polyamide, 40-50 parts of polyurea, 15-25 parts of paraffin, 25-35 parts of polyglutamic acid, 15-20 parts of zinc polyaspartate, 8-12 parts of nitrification inhibitor, 35-45 parts of urease, 4-6 parts of fulvic acid, 3-5 parts of humus, 3-5 parts of amino acids, 4-6 parts of actinomycetes, 4-6 parts of spirochetes, 12-15 parts of ammonium magnesium phosphate, 15-25 parts of polypropylene, 10-20 parts of polyvinyl chloride, 14-16 parts of urea phosphate, 8-12 parts of talc, 8-12 parts of sulfur, 5-8 parts of biochar, 5-8 parts of zeolite, and 5-8 parts of diatomaceous earth.

[0008] Furthermore, the raw materials include the following components in parts by weight: 40 parts of polyvinyl alcohol, 45 parts of polyethylene, 35 parts of polyamide, 45 parts of polyurea, 20 parts of paraffin, 28 parts of polyglutamic acid, 18 parts of zinc polyaspartate, 10 parts of nitrification inhibitor, 40 parts of urease, 5 parts of fulvic acid, 4 parts of humus, 4 parts of amino acids, 5 parts of actinomycetes, 5 parts of spirochetes, 13 parts of ammonium magnesium phosphate, 20 parts of polypropylene, 15 parts of polyvinyl chloride, 15 parts of urea phosphate, 10 parts of talc, 10 parts of sulfur, 6 parts of biochar, 6 parts of zeolite, and 6 parts of diatomaceous earth.

[0009] The present invention also proposes a preparation process of a bio-energy-accumulating slow-release fertilizer, wherein the bio-energy-accumulating slow-release fertilizer is any of the bio-energy-accumulating slow-release fertilizers described above, and comprises the following steps:

[0010] S1: Select raw materials and pre-treat them;

[0011] S2: Mixing the pretreated raw materials according to proportion;

[0012] S3: granulating the mixed raw materials to form fertilizer granules;

[0013] S4: drying the fertilizer particles and treating the generated waste gas;

[0014] S5: cooling the dried fertilizer particles and screening them;

[0015] S6: Recycling the screened waste materials;

[0016] S7: Packing the sieved fertilizer particles to obtain slow-release fertilizer.

[0017] Furthermore, in S1, polyglutamic acid, zinc polyaspartate, polyvinyl alcohol, polyethylene, polyamide, paraffin, polypropylene, polyvinyl chloride, and urea phosphate are dissolved and melted by a dissolving mechanism. The dissolution process of polyglutamic acid, zinc polyaspartate, and polyvinyl alcohol is as follows: at room temperature, polyglutamic acid, zinc polyaspartate, and polyvinyl alcohol solids are added into water at a temperature of 70-95° C. and stirred sufficiently to completely dissolve them. The dissolution process of polyethylene, polypropylene, and polyvinyl chloride is as follows: polyethylene, polypropylene, polyvinyl chloride, and polyamide are added into water at a temperature of 70-95° C. and stirred sufficiently to completely dissolve them. Added into the solvent, the solvent is toluene and tetrahydrofuran, under the condition of heating temperature of 70-165℃, polyethylene, polypropylene, polyvinyl chloride, polyamide melt into liquid, then gradually swell, and finally dissolve in the solvent, the melting process of paraffin: under the condition of heating temperature of 70-130℃, paraffin melts from light yellow translucent block solid to medium yellow liquid, and polyurea, fulvic acid, humus, amino acid, ammonium magnesium phosphate, talc, sulfur, biochar, zeolite, diatomaceous earth are dried, crushed and sieved through the pretreatment mechanism.

[0018] Further, in S2, polyglutamic acid, zinc polyaspartate, polyvinyl alcohol, polyethylene, polyamide, paraffin, polypropylene, polyvinyl chloride, urea phosphate, polyurea, fulvic acid, humus, amino acid, ammonium magnesium phosphate, talc, sulfur, biochar, zeolite, and diatomaceous earth are stirred and mixed by a stirring and mixing mechanism. Under the condition of an acidic catalyst, urea phosphate and polyurea undergo a hydrolysis reaction, and the hydrolysis reaction breaks the phosphate bond and the amide bond in the urea group to generate corresponding phosphates, urea, and small molecule compounds. The hydrolysis reaction of urea phosphate can be expressed as: R-CONH2-OPO3R'2+H2O→R-CONH2+HO-PO3R'2+other products, wherein R and R' represent different organic groups, HO-PO3R'2 represents the phosphate part, the hydrolysis reaction of polyurea will break the amide bond in the urea group to generate corresponding amine and carboxylic acid or carbonic acid. The hydrolysis reaction of polyurea can be expressed as: R-NHCONHR'+H2O→R-NH2+HOOCR'+CO2. Under the condition of alkaline catalyst, amino acid and ammonium magnesium phosphate undergo condensation reaction. The reaction process is as follows: the amino group and carboxyl group of amino acid undergo condensation reaction with the phosphate ion in ammonium magnesium phosphate to generate organic phosphate compounds, which are wrapped on the surface of the mixed raw materials after melting to form a semi-permeable membrane. After mixing, a mixed material is obtained, and the water content of the mixed material is 25%-40%.

[0019] Furthermore, in S3, the mixed material is conveyed by a conveying mechanism, and the mixed material is granulated by a granulator, the temperature of the feeding zone of the granulator is 100-150°C, the temperature of the heating zone of the granulator is 150-200°C, the temperature of the homogenizing zone of the granulator is 200-240°C, and the temperature of the discharging zone of the granulator is 160-200°C, so as to obtain fertilizer granules.

[0020] Furthermore, in S4, the waste particles are dried by a drying device, the temperature of the drying device is 170-200° C., the drying time is 15-40 minutes, and the gas generated by the drying is collected and purified by a collection and purification mechanism.

[0021] Furthermore, in S5 and S6, the dried fertilizer particles are cooled by a drum cooler, the rotation speed of the drum cooler is 3-6 r / min, the cooled fertilizer particles are screened by a drum screening machine, the rotation speed of the drum screening machine is 11-22 r / min, and the screened waste is collected and recycled by a recovery device.

[0022] Furthermore, in S7, the screened fertilizer is packaged by a packaging mechanism to obtain slow-release waste.

[0023] Amino acids are a class of amphiphilic organic compounds and are the basic building blocks of biological functional macromolecule proteins. The chemical formula of amino acids can be written as R-CH(NH 2 )-COOH, R is a side chain group. The main categories can be divided into protein amino acids and non-protein amino acids. Among them, protein amino acids are also called standard amino acids. They are amino acids that directly participate in the synthesis of protein molecules. According to the different positions of the amino group on the carbon chain, amino acids can be divided into α-, β-, γ- and other amino acids. However, the amino acids that constitute natural proteins in the biological world are all α-amino acids, a total of 22 types, including 20 common amino acids and 2 uncommon amino acids. Non-protein amino acids cannot directly participate in the synthesis of protein molecules and need to be modified to participate in the synthesis of proteins, such as citrulline, ornithine and hydroxyproline. Amino acids are usually white solid powders and are soluble in water. However, they have different properties due to their different structures, R groups, etc., such as isoelectric point and optical rotation. The basic physical properties of amino acids include melting point, boiling point, solubility, etc., and the specific values ​​depend on the specific type of amino acid. In terms of chemical properties, amino acids have amino and carboxyl groups, can undergo acid-base neutralization reactions, can also participate in the formation of peptide bonds, and may dissociate in acid-base environments. The detection of amino acids can also be screened and identified based on these different properties. Currently developed detection methods include spectrophotometry, liquid chromatography, gas chromatography, infrared detection and other methods. In addition to building proteins, amino acids also participate in the metabolic process in the body and regulate physiological functions. In the field of medicine, amino acids are used as raw materials or excipients for drugs; in the field of food, amino acids are added to food to enhance nutritional value; in the field of chemical industry, amino acids can be used to synthesize other compounds;

[0024] Diatomaceous earth, composed of amorphous SiO 2 Composition, and contains a small amount of Fe 2 O 3、CaO、MgO、Al 2 O 3 Diatomaceous earth is usually light yellow or light gray, soft, porous and light. It is often used in industry as thermal insulation material, filter material, filler, grinding material, water glass raw material, decolorizing agent and diatomaceous earth filter aid, catalyst carrier, etc. The special porous structure of natural diatomaceous earth can be observed under a microscope. This microporous structure is the reason why diatomaceous earth has characteristic physical and chemical properties. The main component of diatomaceous earth as a carrier is SiO 2 For example, the active component of industrial vanadium catalyst is V 2 O 5 , the co-catalyst is alkali metal sulfate, and the carrier is refined diatomaceous earth. Experiments show that SiO 2 It stabilizes the active components and changes with K 2 O or Na 2 The activity of the catalyst is also related to the dispersion and pore structure of the carrier. After diatomite is treated with acid, the content of oxide impurities decreases. SiO 2 As the content increases, the specific surface area and pore volume also increase, so the carrier effect of refined diatomaceous earth is better than that of natural diatomaceous earth. Diatomaceous earth is generally formed by the silicate remains of dead single-cell algae collectively known as diatoms. Its essence is amorphous SiO containing water. 2 Diatoms can live in both fresh and salt water. There are many species, which can be generally divided into "Centrales" diatoms and "Pendulales" diatoms. In each order, there are many "genera", which is quite complicated.

[0025] Zeolite is the general term for zeolite family minerals. It is a hydrated alkali or alkaline earth metal aluminum silicate mineral. More than 40 kinds of natural zeolites have been discovered in the world, among which the most common ones are clinoptilolite, mordenite, chabazite, erionite, phillipsite, heulandite, lauzenite, stilbite and analcime. Clinoptilolite and mordenite have been used in large quantities. Zeolite family minerals belong to different crystal systems. Most of the crystals are fibrous, hair-like, columnar, and a few are plate-like or short columnar. Zeolite has ion exchange, adsorption and separation, catalysis, stability, chemical reactivity, reversible dehydration, conductivity, etc. Zeolite is mainly produced in the cracks or amygdala of volcanic rocks, and coexists with calcite, chalcedony, and quartz; it is also produced in volcanic clastic sedimentary rocks and hot spring deposits. The general chemical formula of zeolite is: A m B p O 2p ·nH 2 O, structural formula is A (x / q) [(AlO 2 ) x (SiO 2 ) y ]·n(H 2O) Where: A is a cation such as Ca, Na, K, Ba, Sr, B is Al and Si, p is the cation valence, m is the number of cations, n is the number of water molecules, x is the number of Al atoms, y is the number of Si atoms, (y / x) is usually between 1 and 5, and (x+y) is the number of tetrahedrons in the unit cell.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. The polyglutamic acid, zinc polyaspartate, nitrification inhibitor and fulvic acid in this solution can effectively improve the soil structure and environment, increase the soil's ability to retain water and fertilizer, and significantly improve the utilization rate of fertilizer;

[0028] 2. In this scheme, humus is decomposed and transformed by microorganisms to release organic nutrients such as nitrogen and phosphorus, thereby improving soil fertility. Amino acids participate in various physiological processes in plants, such as protein synthesis and enzyme catalysis, which has a positive effect on plant growth and stress resistance, and significantly improves fertilizer utilization and crop yields.

[0029] The present invention can effectively improve soil structure and environment and significantly increase fertilizer utilization rate by using polyvinyl alcohol, polyethylene, polyamide, polyurea, paraffin, polyglutamic acid, polyaspartic acid zinc, nitrification inhibitor, urease, fulvic acid, humus, amino acid, actinomycetes, spirochetes, magnesium ammonium phosphate, polypropylene, polyvinyl chloride, urea phosphate, talcum powder, sulfur, biochar, zeolite and diatomaceous earth. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The present invention provides a flow chart of a process for preparing a bio-energy-accumulating and synergistic slow-release fertilizer. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] Embodiment 1

[0033] Reference Figure 1 A bioenergy-enhancing slow-release fertilizer includes raw materials, which include the following components in parts by weight: 20 parts of polyvinyl alcohol, 20 parts of polyethylene, 20 parts of polyamide, 20 parts of polyurea, 10 parts of paraffin, 20 parts of polyglutamic acid, 10 parts of polyaspartic acid zinc, 5 parts of nitrification inhibitor, 30 parts of urease, 1 part of fulvic acid, 1 part of humus, 1 part of amino acid, 2 parts of actinomycetes, 2 parts of spirochetes, 8 parts of magnesium ammonium phosphate, 10 parts of polypropylene, 5 parts of polyvinyl chloride, 10 parts of urea phosphate, 5 parts of talc, 5 parts of sulfur, 2 parts of biochar, 2 parts of zeolite, and 2 parts of diatomaceous earth.

[0034] This embodiment also proposes a preparation process of a bioenergy-accumulating and synergistic slow-release fertilizer, comprising the following steps:

[0035] S1: dissolving and melting polyglutamic acid, zinc polyaspartate, polyvinyl alcohol, polyethylene, polyamide, paraffin, polypropylene, polyvinyl chloride, and urea phosphate by dissolving mechanism. Dissolving process of polyglutamic acid, zinc polyaspartate, and polyvinyl alcohol: add polyglutamic acid, zinc polyaspartate, and polyvinyl alcohol solids into water at room temperature of 70°C and stir them fully to make them completely dissolved. Dissolving process of polyethylene, polypropylene, and polyvinyl chloride: add polyethylene, polypropylene, polyvinyl chloride, and polyamide to the solvent, the solvent is toluene and tetrahydrofuran, under the condition of heating temperature of 70°C, polyethylene, polypropylene, polyvinyl chloride, polyamide melt into liquid, then gradually swell, and finally dissolve in the solvent, the melting process of paraffin: under the condition of heating temperature of 70°C, paraffin melts from light yellow translucent block solid to medium yellow liquid, and polyurea, fulvic acid, humus, amino acid, ammonium magnesium phosphate, talc, sulfur, biochar, zeolite, diatomaceous earth are dried, crushed and sieved through the pretreatment mechanism;

[0036] S2: Polyglutamic acid, zinc polyaspartate, polyvinyl alcohol, polyethylene, polyamide, paraffin, polypropylene, polyvinyl chloride, urea phosphate, polyurea, fulvic acid, humus, amino acid, ammonium magnesium phosphate, talc, sulfur, biochar, zeolite, and diatomaceous earth are stirred and mixed by a stirring and mixing mechanism. Under the condition of an acidic catalyst, urea phosphate and polyurea undergo a hydrolysis reaction, which breaks the phosphate bond and the amide bond in the urea group to generate corresponding phosphates, urea, and small molecular compounds. The hydrolysis reaction of urea phosphate can be expressed as: R-CONH2-OPO3R'2+H2O→R-CONH2+HO-PO3R'2+other products, where R and R' Represents different organic groups, HO-PO3R'2 represents the phosphate part, the hydrolysis reaction of polyurea will break the amide bond in the urea group to generate the corresponding amine and carboxylic acid or carbonic acid. The hydrolysis reaction of polyurea can be expressed as: R-NHCONHR'+H2O→R-NH2+HOOCR'+CO2. Under the condition of alkaline catalyst, amino acid and ammonium magnesium phosphate undergo condensation reaction. The reaction process is: the amino group and carboxyl group of amino acid undergo condensation reaction with the phosphate ion in ammonium magnesium phosphate to generate organic phosphate compounds, which are wrapped on the surface of the mixed raw materials after melting to form a semi-permeable membrane. After mixing, a mixed material is obtained, and the water content of the mixed material is 25%-40%;

[0037] S3: The mixed material is conveyed by a conveying mechanism, and the mixed material is granulated by a granulator, the temperature of the granulator feeding zone is 100° C., the temperature of the granulator heating zone is 150° C., the temperature of the granulator homogenizing zone is 200° C., and the temperature of the granulator discharging zone is 160° C., to obtain fertilizer granules;

[0038] S4: Drying the waste particles by a drying device at a temperature of 170°C for 15 minutes, and collecting and purifying the gas generated by the drying by a collection and purification mechanism;

[0039] S5: Cooling the dried fertilizer particles by a drum cooler, the speed of the drum cooler is 3r / min, and screening the cooled fertilizer particles by a drum screening machine, the speed of the drum screening machine is 11r / min;

[0040] S6: collecting and recycling the screened waste through a recovery device;

[0041] S7: The screened fertilizer is packaged by a packaging mechanism to obtain a slow-release waste material.

[0042] Experimental Design

[0043] 1. Effects of traditional fertilizers and bio-energy-enhancing slow-release fertilizers on soil environment improvement

[0044] 1. Purpose of the test

[0045] Compare the effects of traditional fertilizers and biomass-enhanced slow-release fertilizers in improving soil environment, and evaluate their effects on soil physical and chemical properties, microbial community structure, nutrient cycling, and crop growth;

[0046] 2. Test materials

[0047] Test soil: Choose black soil, which has a relatively balanced soil texture and nutrient content;

[0048] Test crops: Wheat was selected as the observation object;

[0049] Fertilizer: Traditional fertilizers include urea, diammonium phosphate, and potassium chloride. The application amount is determined according to the local conventional fertilizer application amount. The bio-energy-accumulating slow-release fertilizer is the above-mentioned bio-energy-accumulating slow-release fertilizer. The application amount is the same as the traditional fertilizer.

[0050] 3. Test steps

[0051] Treatment settings: Control treatment (CK): no fertilizer was applied; Conventional fertilizer treatment (CF): application of conventional fertilizer; Slow-release fertilizer treatment (SRF): application of bio-energy-enhancing slow-release fertilizer; Each treatment was set up with 3 replicates, using a randomized block design;

[0052] Fertilization management: Determine the appropriate time and method of fertilization based on the crop growth cycle and fertilizer characteristics. Except for fertilization, other management measures remain consistent for all treatment groups;

[0053] 4. Observation indicators

[0054] Soil physical and chemical properties: Soil samples were collected regularly to measure soil pH, organic matter content, total nitrogen, total phosphorus, total potassium, available nitrogen, available phosphorus, and available potassium indicators;

[0055] Crop growth status: record plant height, leaf area, and biomass indicators during the crop growth cycle, and evaluate the impact of fertilizers on crop growth;

[0056] 5. Data collection and analysis

[0057] Data collection: During the experiment, the data of various observation indicators were recorded in detail, including the amount of fertilizer applied, the amount of irrigation, the growth status of crops, etc.;

[0058] Data analysis: Statistical methods were used to process and analyze the collected data, compare the significance of differences between different treatment groups, and evaluate the relationship between fertilizer type and soil environment improvement effect;

[0059] According to the requirements of the experimental design, each treatment was improved and operated, and various observation indicators were regularly observed and recorded. Statistical software was used to organize and analyze the observation data, and the significance of differences between different treatments was compared. The experimental data are shown in the following table:

[0060] Table 1 Experimental data on the effects of different fertilizers on soil environment improvement

[0061]

[0062] The above table shows that the use of slow-release fertilizers containing components such as polyglutamic acid, zinc polyaspartate, polyvinyl alcohol, polyethylene, polyamide, paraffin, polypropylene, and polyvinyl chloride can effectively regulate soil pH, increase soil organic matter, total nitrogen, total phosphorus, total potassium, available nitrogen, available phosphorus, and available potassium, and provide a more suitable soil environment for crops, which is conducive to the stability of soil structure and the maintenance of nutrients.

[0063] Table 2 Experimental data on the effects of different fertilizers on crop growth and yield

[0064] Plant height(cm) <![CDATA[Leaf area (cm 2 )]]> Biomass (kg / ha) CK 70 20 12000 CF 85 40 15000 SRF 110 55 18000

[0065] The above table shows that the use of slow-release fertilizers containing components such as polyglutamic acid, zinc polyaspartate, polyvinyl alcohol, polyethylene, polyamide, paraffin, polypropylene, and polyvinyl chloride can improve wheat crop yield and quality compared with traditional chemical fertilizer treatment, and can significantly improve fertilizer utilization and crop yield.

[0066] Embodiment 2

[0067] Reference Figure 1 A bioenergy-enhancing slow-release fertilizer includes raw materials, which include the following components in parts by weight: 30 parts of polyvinyl alcohol, 30 parts of polyethylene, 25 parts of polyamide, 30 parts of polyurea, 15 parts of paraffin, 25 parts of polyglutamic acid, 15 parts of polyaspartic acid zinc, 8 parts of nitrification inhibitor, 35 parts of urease, 2 parts of fulvic acid, 2 parts of humus, 2 parts of amino acids, 4 parts of actinomycetes, 4 parts of spirochetes, 12 parts of ammonium magnesium phosphate, 14 parts of polypropylene, 10 parts of polyvinyl chloride, 12 parts of urea phosphate, 8 parts of talc, 8 parts of sulfur, 4 parts of biochar, 4 parts of zeolite, and 4 parts of diatomaceous earth.

[0068] This embodiment also proposes a preparation process of a bioenergy-accumulating and synergistic slow-release fertilizer, comprising the following steps:

[0069] S1: dissolving and melting polyglutamic acid, zinc polyaspartate, polyvinyl alcohol, polyethylene, polyamide, paraffin, polypropylene, polyvinyl chloride, and urea phosphate by dissolving mechanism. Dissolving process of polyglutamic acid, zinc polyaspartate, and polyvinyl alcohol: add polyglutamic acid, zinc polyaspartate, and polyvinyl alcohol solids into water at room temperature of 75°C and stir them fully to make them completely dissolved. Dissolving process of polyethylene, polypropylene, and polyvinyl chloride: add polyethylene, polypropylene, polyvinyl chloride, and polyamide into water. to the solvent, the solvent is toluene and tetrahydrofuran, under the condition of heating temperature of 90°C, polyethylene, polypropylene, polyvinyl chloride, polyamide melt into liquid, then gradually swell, and finally dissolve in the solvent, the melting process of paraffin: under the condition of heating temperature of 80°C, paraffin melts from light yellow translucent block solid to medium yellow liquid, polyurea, fulvic acid, humus, amino acid, ammonium magnesium phosphate, talc, sulfur, biochar, zeolite, diatomaceous earth are dried, crushed and sieved through the pretreatment mechanism;

[0070] S2: Polyglutamic acid, zinc polyaspartate, polyvinyl alcohol, polyethylene, polyamide, paraffin, polypropylene, polyvinyl chloride, urea phosphate, polyurea, fulvic acid, humus, amino acid, ammonium magnesium phosphate, talc, sulfur, biochar, zeolite, and diatomaceous earth are stirred and mixed by a stirring and mixing mechanism. Under the condition of an acidic catalyst, urea phosphate and polyurea undergo a hydrolysis reaction, which breaks the phosphate bond and the amide bond in the urea group to generate corresponding phosphates, urea, and small molecular compounds. The hydrolysis reaction of urea phosphate can be expressed as: R-CONH2-OPO3R'2+H2O→R-CONH2+HO-PO3R'2+other products, where R and R' Represents different organic groups, HO-PO3R'2 represents the phosphate part, the hydrolysis reaction of polyurea will break the amide bond in the urea group to generate the corresponding amine and carboxylic acid or carbonic acid. The hydrolysis reaction of polyurea can be expressed as: R-NHCONHR'+H2O→R-NH2+HOOCR'+CO2. Under the condition of alkaline catalyst, amino acid and ammonium magnesium phosphate undergo condensation reaction. The reaction process is: the amino group and carboxyl group of amino acid undergo condensation reaction with the phosphate ion in ammonium magnesium phosphate to generate organic phosphate compounds, which are wrapped on the surface of the mixed raw materials after melting to form a semi-permeable membrane. After mixing, a mixed material is obtained, and the water content of the mixed material is 25%-40%;

[0071] S3: The mixed material is conveyed by a conveying mechanism, and the mixed material is granulated by a granulator, the temperature of the feeding zone of the granulator is 110° C., the temperature of the heating zone of the granulator is 160° C., the temperature of the homogenizing zone of the granulator is 210° C., and the temperature of the discharging zone of the granulator is 170° C., to obtain fertilizer granules;

[0072] S4: Drying the waste particles by a drying device at a temperature of 175°C for 20 minutes, and collecting and purifying the gas generated by the drying by a collection and purification mechanism;

[0073] S5: Cooling the dried fertilizer particles by a drum cooler, the speed of which is 3.5 r / min, and screening the cooled fertilizer particles by a drum screening machine, the speed of which is 14 r / min;

[0074] S6: collecting and recycling the screened waste through a recovery device;

[0075] S7: The screened fertilizer is packaged by a packaging mechanism to obtain a slow-release waste material.

[0076] Embodiment 3

[0077] Reference Figure 1A bioenergy-enhancing slow-release fertilizer includes raw materials, which include the following components in parts by weight: 40 parts of polyvinyl alcohol, 40 parts of polyethylene, 30 parts of polyamide, 40 parts of polyurea, 20 parts of paraffin, 30 parts of polyglutamic acid, 20 parts of polyaspartic acid zinc, 10 parts of nitrification inhibitor, 40 parts of urease, 4 parts of fulvic acid, 4 parts of humus, 4 parts of amino acids, 6 parts of actinomycetes, 6 parts of spirochetes, 15 parts of magnesium ammonium phosphate, 20 parts of polypropylene, 15 parts of polyvinyl chloride, 16 parts of urea phosphate, 12 parts of talc, 12 parts of sulfur, 6 parts of biochar, 6 parts of zeolite, and 6 parts of diatomaceous earth.

[0078] This embodiment also proposes a preparation process of a bioenergy-accumulating and synergistic slow-release fertilizer, comprising the following steps:

[0079] S1: dissolving and melting polyglutamic acid, zinc polyaspartate, polyvinyl alcohol, polyethylene, polyamide, paraffin, polypropylene, polyvinyl chloride, and urea phosphate by dissolving mechanism. Dissolving process of polyglutamic acid, zinc polyaspartate, and polyvinyl alcohol: adding polyglutamic acid, zinc polyaspartate, and polyvinyl alcohol solids into water at room temperature of 80°C and stirring them fully to completely dissolve them. Dissolving process of polyethylene, polypropylene, and polyvinyl chloride: adding polyethylene, polypropylene, polyvinyl chloride, and polyamide into water In the solvent, the solvent is toluene and tetrahydrofuran. Under the condition of heating temperature of 120°C, polyethylene, polypropylene, polyvinyl chloride, and polyamide melt into liquid state, then gradually swell, and finally dissolve in the solvent. The melting process of paraffin: under the condition of heating temperature of 100°C, paraffin melts from light yellow translucent block solid to medium yellow liquid. The pretreatment mechanism is used to dry, crush and screen polyurea, fulvic acid, humus, amino acid, ammonium magnesium phosphate, talc, sulfur, biochar, zeolite, and diatomaceous earth;

[0080] S2: Polyglutamic acid, zinc polyaspartate, polyvinyl alcohol, polyethylene, polyamide, paraffin, polypropylene, polyvinyl chloride, urea phosphate, polyurea, fulvic acid, humus, amino acid, ammonium magnesium phosphate, talc, sulfur, biochar, zeolite, and diatomaceous earth are stirred and mixed by a stirring and mixing mechanism. Under the condition of an acidic catalyst, urea phosphate and polyurea undergo a hydrolysis reaction, which breaks the phosphate bond and the amide bond in the urea group to generate corresponding phosphates, urea, and small molecular compounds. The hydrolysis reaction of urea phosphate can be expressed as: R-CONH2-OPO3R'2+H2O→R-CONH2+HO-PO3R'2+other products, where R and R' Represents different organic groups, HO-PO3R'2 represents the phosphate part, the hydrolysis reaction of polyurea will break the amide bond in the urea group to generate the corresponding amine and carboxylic acid or carbonic acid. The hydrolysis reaction of polyurea can be expressed as: R-NHCONHR'+H2O→R-NH2+HOOCR'+CO2. Under the condition of alkaline catalyst, amino acid and ammonium magnesium phosphate undergo condensation reaction. The reaction process is: the amino group and carboxyl group of amino acid undergo condensation reaction with the phosphate ion in ammonium magnesium phosphate to generate organic phosphate compounds, which are wrapped on the surface of the mixed raw materials after melting to form a semi-permeable membrane. After mixing, a mixed material is obtained, and the water content of the mixed material is 25%-40%;

[0081] S3: The mixed material is conveyed by a conveying mechanism, and the mixed material is granulated by a granulator, the temperature of the feeding zone of the granulator is 120° C., the temperature of the heating zone of the granulator is 170° C., the temperature of the homogenizing zone of the granulator is 220° C., and the temperature of the discharging zone of the granulator is 180° C., to obtain fertilizer granules;

[0082] S4: Drying the waste particles by a drying device at a temperature of 180°C for 25 minutes, and collecting and purifying the gas generated by the drying by a collection and purification mechanism;

[0083] S5: Cooling the dried fertilizer particles by a drum cooler, the speed of which is 4 r / min, and screening the cooled fertilizer particles by a drum screening machine, the speed of which is 16 r / min;

[0084] S6: collecting and recycling the screened waste through a recovery device;

[0085] S7: The screened fertilizer is packaged by a packaging mechanism to obtain a slow-release waste material.

[0086] Embodiment 4

[0087] Reference Figure 1A bioenergy-enhancing slow-release fertilizer includes raw materials, which include the following components in parts by weight: 60 parts of polyvinyl alcohol, 60 parts of polyethylene, 40 parts of polyamide, 50 parts of polyurea, 25 parts of paraffin, 35 parts of polyglutamic acid, 25 parts of polyaspartic acid zinc, 12 parts of nitrification inhibitor, 45 parts of urease, 6 parts of fulvic acid, 6 parts of humus, 6 parts of amino acids, 7 parts of actinomycetes, 7 parts of spirochetes, 18 parts of ammonium magnesium phosphate, 25 parts of polypropylene, 20 parts of polyvinyl chloride, 18 parts of urea phosphate, 14 parts of talc, 14 parts of sulfur, 8 parts of biochar, 8 parts of zeolite, and 8 parts of diatomaceous earth.

[0088] This embodiment also proposes a preparation process of a bioenergy-accumulating and synergistic slow-release fertilizer, comprising the following steps:

[0089] S1: dissolving and melting polyglutamic acid, zinc polyaspartate, polyvinyl alcohol, polyethylene, polyamide, paraffin, polypropylene, polyvinyl chloride, and urea phosphate by dissolving mechanism. Dissolving process of polyglutamic acid, zinc polyaspartate, and polyvinyl alcohol: adding polyglutamic acid, zinc polyaspartate, and polyvinyl alcohol solids into water at room temperature of 90°C and stirring them fully to completely dissolve them. Dissolving process of polyethylene, polypropylene, and polyvinyl chloride: adding polyethylene, polypropylene, polyvinyl chloride, and polyamide into water In the solvent, the solvent is toluene and tetrahydrofuran. Under the condition of heating temperature of 140°C, polyethylene, polypropylene, polyvinyl chloride, and polyamide melt into liquid state, then gradually swell, and finally dissolve in the solvent. The melting process of paraffin wax: under the condition of heating temperature of 110°C, paraffin wax melts from light yellow translucent block solid to medium yellow liquid. Polyurea, fulvic acid, humus, amino acid, ammonium magnesium phosphate, talc, sulfur, biochar, zeolite, and diatomaceous earth are dried, crushed, and sieved through the pretreatment mechanism;

[0090] S2: Polyglutamic acid, zinc polyaspartate, polyvinyl alcohol, polyethylene, polyamide, paraffin, polypropylene, polyvinyl chloride, urea phosphate, polyurea, fulvic acid, humus, amino acid, ammonium magnesium phosphate, talc, sulfur, biochar, zeolite, and diatomaceous earth are stirred and mixed by a stirring and mixing mechanism. Under the condition of an acidic catalyst, urea phosphate and polyurea undergo a hydrolysis reaction, which breaks the phosphate bond and the amide bond in the urea group to generate corresponding phosphates, urea, and small molecular compounds. The hydrolysis reaction of urea phosphate can be expressed as: R-CONH2-OPO3R'2+H2O→R-CONH2+HO-PO3R'2+other products, where R and R' Represents different organic groups, HO-PO3R'2 represents the phosphate part, the hydrolysis reaction of polyurea will break the amide bond in the urea group to generate the corresponding amine and carboxylic acid or carbonic acid. The hydrolysis reaction of polyurea can be expressed as: R-NHCONHR'+H2O→R-NH2+HOOCR'+CO2. Under the condition of alkaline catalyst, amino acid and ammonium magnesium phosphate undergo condensation reaction. The reaction process is: the amino group and carboxyl group of amino acid undergo condensation reaction with the phosphate ion in ammonium magnesium phosphate to generate organic phosphate compounds, which are wrapped on the surface of the mixed raw materials after melting to form a semi-permeable membrane. After mixing, a mixed material is obtained, and the water content of the mixed material is 25%-40%;

[0091] S3: The mixed material is conveyed by a conveying mechanism, and the mixed material is granulated by a granulator, the temperature of the feeding zone of the granulator is 140° C., the temperature of the heating zone of the granulator is 185° C., the temperature of the homogenizing zone of the granulator is 230° C., and the temperature of the discharging zone of the granulator is 190° C., to obtain fertilizer granules;

[0092] S4: Drying the waste particles by a drying device at a temperature of 190°C for 30 minutes, and collecting and purifying the gas generated by the drying by a collection and purification mechanism;

[0093] S5: Cooling the dried fertilizer particles by a drum cooler, the speed of which is 5 r / min, and screening the cooled fertilizer particles by a drum screening machine, the speed of which is 18 r / min;

[0094] S6: collecting and recycling the screened waste through a recovery device;

[0095] S7: The screened fertilizer is packaged by a packaging mechanism to obtain a slow-release waste material.

[0096] Embodiment 5

[0097] Reference Figure 1A bioenergy-enhancing slow-release fertilizer includes raw materials, which include the following components in parts by weight: 80 parts of polyvinyl alcohol, 70 parts of polyethylene, 50 parts of polyamide, 60 parts of polyurea, 30 parts of paraffin, 40 parts of polyglutamic acid, 30 parts of polyaspartic acid zinc, 15 parts of nitrification inhibitor, 50 parts of urease, 8 parts of fulvic acid, 8 parts of humus, 8 parts of amino acids, 8 parts of actinomycetes, 8 parts of spirochetes, 20 parts of magnesium ammonium phosphate, 30 parts of polypropylene, 25 parts of polyvinyl chloride, 20 parts of urea phosphate, 15 parts of talc, 15 parts of sulfur, 10 parts of biochar, 10 parts of zeolite, and 10 parts of diatomaceous earth.

[0098] This embodiment also proposes a preparation process of a bioenergy-accumulating and synergistic slow-release fertilizer, comprising the following steps:

[0099] S1: dissolving and melting polyglutamic acid, zinc polyaspartate, polyvinyl alcohol, polyethylene, polyamide, paraffin, polypropylene, polyvinyl chloride, and urea phosphate by dissolving mechanism. Dissolving process of polyglutamic acid, zinc polyaspartate, and polyvinyl alcohol: adding polyglutamic acid, zinc polyaspartate, and polyvinyl alcohol solids into water at room temperature of 95°C and stirring them fully to completely dissolve them. Dissolving process of polyethylene, polypropylene, and polyvinyl chloride: adding polyethylene, polypropylene, polyvinyl chloride, and polyamide into water In the solvent, the solvent is toluene and tetrahydrofuran. Under the condition of heating temperature of 165°C, polyethylene, polypropylene, polyvinyl chloride, and polyamide melt into liquid state, then gradually swell, and finally dissolve in the solvent. The melting process of paraffin wax: under the condition of heating temperature of 130°C, paraffin wax melts from light yellow translucent block solid to medium yellow liquid. The pretreatment mechanism is used to dry, crush and screen polyurea, fulvic acid, humus, amino acid, ammonium magnesium phosphate, talc, sulfur, biochar, zeolite, and diatomaceous earth;

[0100] S2: Polyglutamic acid, zinc polyaspartate, polyvinyl alcohol, polyethylene, polyamide, paraffin, polypropylene, polyvinyl chloride, urea phosphate, polyurea, fulvic acid, humus, amino acid, ammonium magnesium phosphate, talc, sulfur, biochar, zeolite, and diatomaceous earth are stirred and mixed by a stirring and mixing mechanism. Under the condition of an acidic catalyst, urea phosphate and polyurea undergo a hydrolysis reaction, which breaks the phosphate bond and the amide bond in the urea group to generate corresponding phosphates, urea, and small molecular compounds. The hydrolysis reaction of urea phosphate can be expressed as: R-CONH2-OPO3R'2+H2O→R-CONH2+HO-PO3R'2+other products, where R and R' Represents different organic groups, HO-PO3R'2 represents the phosphate part, the hydrolysis reaction of polyurea will break the amide bond in the urea group to generate the corresponding amine and carboxylic acid or carbonic acid. The hydrolysis reaction of polyurea can be expressed as: R-NHCONHR'+H2O→R-NH2+HOOCR'+CO2. Under the condition of alkaline catalyst, amino acid and ammonium magnesium phosphate undergo condensation reaction. The reaction process is: the amino group and carboxyl group of amino acid undergo condensation reaction with the phosphate ion in ammonium magnesium phosphate to generate organic phosphate compounds, which are wrapped on the surface of the mixed raw materials after melting to form a semi-permeable membrane. After mixing, a mixed material is obtained, and the water content of the mixed material is 25%-40%;

[0101] S3: conveying the mixed material through a conveying mechanism, granulating the mixed material through a granulator, the temperature of the granulator feeding zone is 150° C., the temperature of the granulator heating zone is 200° C., the temperature of the granulator homogenizing zone is 240° C., and the temperature of the granulator discharging zone is 200° C., to obtain fertilizer granules;

[0102] S4: Drying the waste particles by a drying device, the drying temperature is 200°C, the drying time is 40 minutes, and the gas generated by the drying is collected and purified by a collection and purification mechanism;

[0103] S5: Cooling the dried fertilizer particles by a drum cooler, the speed of which is 6 r / min, and screening the cooled fertilizer particles by a drum screening machine, the speed of which is 22 r / min;

[0104] S6: collecting and recycling the screened waste through a recovery device;

[0105] S7: The screened fertilizer is packaged by a packaging mechanism to obtain a slow-release waste material.

[0106] Experimental example

[0107] By comparing the bio-energy-accumulating slow-release fertilizer and its preparation scheme proposed in Examples 1 to 5 with conventional slow-release fertilizer and its preparation scheme, the soil structure and environment were tested by using chemical reagents and instruments for qualitative and quantitative analysis. The experimental data are as follows:

[0108]

[0109]

[0110] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A bioenergy-accumulating and synergistic slow-release fertilizer, comprising raw materials, characterized in that: The raw materials include the following components in parts by weight: 20-80 parts of polyvinyl alcohol, 20-70 parts of polyethylene, 20-50 parts of polyamide, 20-60 parts of polyurea, 10-30 parts of paraffin, 20-40 parts of polyglutamic acid, 10-30 parts of zinc polyaspartate, 5-15 parts of nitrification inhibitor, 30-50 parts of urease, 1-8 parts of fulvic acid, 1-8 parts of humus, 1-8 parts of amino acids, 2-8 parts of actinomycetes, 2-8 parts of spirochetes, 8-20 parts of ammonium magnesium phosphate, 10-30 parts of polypropylene, 5-25 parts of polyvinyl chloride, 10-20 parts of urea phosphate, 5-15 parts of talc, 5-15 parts of sulfur, 2-10 parts of biochar, 2-10 parts of zeolite, and 2-10 parts of diatomaceous earth.

2. The bioenergy-accumulating and synergistic slow-release fertilizer according to claim 1, characterized in that: The raw materials include the following components in parts by weight: 30-50 parts of polyvinyl alcohol, 30-60 parts of polyethylene, 30-40 parts of polyamide, 40-50 parts of polyurea, 15-25 parts of paraffin, 25-35 parts of polyglutamic acid, 15-20 parts of zinc polyaspartate, 8-12 parts of nitrification inhibitor, 35-45 parts of urease, 4-6 parts of fulvic acid, 3-5 parts of humus, 3-5 parts of amino acids, 4-6 parts of actinomycetes, 4-6 parts of spirochetes, 12-15 parts of ammonium magnesium phosphate, 15-25 parts of polypropylene, 10-20 parts of polyvinyl chloride, 14-16 parts of urea phosphate, 8-12 parts of talc, 8-12 parts of sulfur, 5-8 parts of biochar, 5-8 parts of zeolite, and 5-8 parts of diatomaceous earth.

3. The bioenergy-accumulating slow-release fertilizer according to claim 2, characterized in that: The raw materials include the following components in parts by weight: 40 parts of polyvinyl alcohol, 45 parts of polyethylene, 35 parts of polyamide, 45 parts of polyurea, 20 parts of paraffin, 28 parts of polyglutamic acid, 18 parts of zinc polyaspartate, 10 parts of nitrification inhibitor, 40 parts of urease, 5 parts of fulvic acid, 4 parts of humus, 4 parts of amino acids, 5 parts of actinomycetes, 5 parts of spirochetes, 13 parts of ammonium magnesium phosphate, 20 parts of polypropylene, 15 parts of polyvinyl chloride, 15 parts of urea phosphate, 10 parts of talc, 10 parts of sulfur, 6 parts of biochar, 6 parts of zeolite, and 6 parts of diatomaceous earth.

4. A preparation process of a bio-energy-accumulating slow-release fertilizer, wherein the bio-energy-accumulating slow-release fertilizer is a bio-energy-accumulating slow-release fertilizer according to any one of claims 1 to 3, characterized in that: The following steps are involved: S1: Select raw materials and pre-treat them; S2: Mixing the pretreated raw materials according to proportion; S3: granulating the mixed raw materials to form fertilizer granules; S4: drying the fertilizer particles and treating the generated waste gas; S5: cooling the dried fertilizer particles and screening them; S6: Recycling the screened waste materials; S7: Packing the sieved fertilizer particles to obtain slow-release fertilizer.

5. The preparation process of a bioenergy-accumulating and synergistic slow-release fertilizer according to claim 4, characterized in that: In S1, polyglutamic acid, zinc polyaspartate, polyvinyl alcohol, polyethylene, polyamide, paraffin, polypropylene, polyvinyl chloride, and urea phosphate are dissolved and melted by a dissolving mechanism. The dissolution process of polyglutamic acid, zinc polyaspartate, and polyvinyl alcohol is as follows: at room temperature, polyglutamic acid, zinc polyaspartate, and polyvinyl alcohol solids are added into water at a temperature of 70-95° C. and stirred sufficiently to completely dissolve them. The dissolution process of polyethylene, polypropylene, and polyvinyl chloride is as follows: polyethylene, polypropylene, polyvinyl chloride, and polyamide are added into water at a temperature of 70-95° C. and stirred sufficiently to completely dissolve them. In the solvent, the solvent is toluene and tetrahydrofuran. Under the condition of heating temperature of 70-165°C, polyethylene, polypropylene, polyvinyl chloride and polyamide melt into liquid, then gradually swell and finally dissolve in the solvent. The melting process of paraffin: under the condition of heating temperature of 70-130°C, paraffin melts from light yellow translucent block solid to medium yellow liquid. Polyurea, fulvic acid, humus, amino acid, ammonium magnesium phosphate, talc, sulfur, biochar, zeolite and diatomaceous earth are dried, crushed and screened through the pretreatment mechanism.

6. The preparation process of a bioenergy-accumulating and synergistic slow-release fertilizer according to claim 5, characterized in that: In S2, polyglutamic acid, zinc polyaspartate, polyvinyl alcohol, polyethylene, polyamide, paraffin, polypropylene, polyvinyl chloride, urea phosphate, polyurea, fulvic acid, humus, amino acid, ammonium magnesium phosphate, talc, sulfur, biochar, zeolite, and diatomaceous earth are stirred and mixed by a stirring and mixing mechanism. Under the condition of an acidic catalyst, urea phosphate and polyurea undergo a hydrolysis reaction, and the hydrolysis reaction breaks the phosphate bond and the amide bond in the urea group to generate corresponding phosphates, urea, and small molecule compounds. The hydrolysis reaction of urea phosphate can be expressed as: R-CONH2-OPO3R'2+H2O→R-CONH2+HO-PO3R'2+other products, wherein R and R' represents different organic groups, HO-PO3R'2 represents the phosphate part, and the hydrolysis reaction of polyurea will break the amide bond in the urea group to generate corresponding amines and carboxylic acids or carbonic acids. The hydrolysis reaction of polyurea can be expressed as: R-NHCONHR'+H2O→R-NH2+HOOCR'+CO2. Under the condition of alkaline catalyst, amino acids undergo condensation reaction with ammonium magnesium phosphate. The reaction process is as follows: the amino group and carboxyl group of the amino acid undergo condensation reaction with the phosphate ions in ammonium magnesium phosphate to generate organic phosphate compounds, which are wrapped on the surface of the mixed raw materials after melting to form a semi-permeable membrane. After mixing, a mixed material is obtained, and the water content of the mixed material is 25%-40%.

7. The preparation process of a bioenergy-accumulating and synergistic slow-release fertilizer according to claim 6, characterized in that: In S3, the mixed material is conveyed by a conveying mechanism, and the mixed material is granulated by a granulator, the temperature of the feeding zone of the granulator is 100-150° C., the temperature of the heating zone of the granulator is 150-200° C., the temperature of the homogenizing zone of the granulator is 200-240° C., and the temperature of the discharging zone of the granulator is 160-200° C., so as to obtain fertilizer granules.

8. The preparation process of a bioenergy-accumulating and synergistic slow-release fertilizer according to claim 7, characterized in that: In S4, the waste particles are dried by a drying device at a temperature of 170-200° C. for a drying time of 15-40 minutes, and the gas generated by the drying is collected and purified by a collection and purification mechanism.

9. The preparation process of a bioenergy-accumulating and synergistic slow-release fertilizer according to claim 8, characterized in that: In S5 and S6, the dried fertilizer particles are cooled by a drum cooler, the rotation speed of the drum cooler is 3-6 r / min, the cooled fertilizer particles are screened by a drum screening machine, the rotation speed of the drum screening machine is 11-22 r / min, and the screened waste is collected and recycled by a recovery device.

10. The preparation process of the bio-energy-accumulating and synergistic slow-release fertilizer according to claim 9, characterized in that: In S7, the screened fertilizer is packaged by a packaging mechanism to obtain slow-release waste.

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