CN113234507A - Energy-saving and environment-friendly biomass fuel and preparation method thereof - Google Patents
Energy-saving and environment-friendly biomass fuel and preparation method thereof Download PDFInfo
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- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/40—Solid fuels essentially based on materials of non-mineral origin
- C10L5/42—Solid fuels essentially based on materials of non-mineral origin on animal substances or products obtained therefrom, e.g. manure
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L10/00—Use of additives to fuels or fires for particular purposes
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- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/06—Methods of shaping, e.g. pelletizing or briquetting
- C10L5/10—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders
- C10L5/12—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders with inorganic binders
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
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- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/34—Other details of the shaped fuels, e.g. briquettes
- C10L5/36—Shape
- C10L5/363—Pellets or granulates
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/40—Solid fuels essentially based on materials of non-mineral origin
- C10L5/44—Solid fuels essentially based on materials of non-mineral origin on vegetable substances
- C10L5/442—Wood or forestry waste
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/40—Solid fuels essentially based on materials of non-mineral origin
- C10L5/44—Solid fuels essentially based on materials of non-mineral origin on vegetable substances
- C10L5/445—Agricultural waste, e.g. corn crops, grass clippings, nut shells or oil pressing residues
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L9/00—Treating solid fuels to improve their combustion
- C10L9/10—Treating solid fuels to improve their combustion by using additives
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2200/00—Components of fuel compositions
- C10L2200/02—Inorganic or organic compounds containing atoms other than C, H or O, e.g. organic compounds containing heteroatoms or metal organic complexes
- C10L2200/029—Salts, such as carbonates, oxides, hydroxides, percompounds, e.g. peroxides, perborates, nitrates, nitrites, sulfates, and silicates
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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Abstract
The invention discloses an energy-saving and environment-friendly biomass fuel and a preparation method thereof, relating to the technical field of biomass fuels; in order to solve the problem of environmental pollution; the biomass fuel comprises the following components in parts by weight: 80 parts of forestry and agricultural residues, 45 parts of animal wastes, 35 parts of coal slime, 7 parts of combustion improver, 5 parts of desulfurizer, 6 parts of denitrifier, 4 parts of dechlorinating agent and 8 parts of high clay; the preparation method of the biomass fuel comprises the following steps: taking agricultural and forestry wastes, animal wastes and coal slime as raw materials, and naturally airing until the water content is 8% -12%; taking the dried agricultural and forestry wastes, animal wastes and coal slime, and sequentially crushing the agricultural and forestry wastes, the animal wastes and the coal slime until the particle size is less than or equal to 2 mm; taking the crushed agricultural and forestry wastes and animal wastes according to the component proportion. The invention effectively reduces the sulfur content, nitrogen content and chlorine content of the fuel, reduces the release of harmful substances such as nitrogen dioxide and carbon dioxide, removes potassium ions and chloride ions, prevents the pollution to the environment, and is energy-saving and environment-friendly.
Description
Technical Field
The invention relates to the technical field of biomass fuels, in particular to an energy-saving and environment-friendly biomass fuel and a preparation method thereof.
Background
The biofuel is solid, liquid or gas fuel which is composed of biomass or is extracted, can replace gasoline and diesel oil which are prepared from petroleum, and is an important direction for developing and utilizing renewable energy sources. Biomass refers to various organisms produced by photosynthesis using the atmosphere, water, land, etc., i.e., all living organic substances that can grow, and biofuel is renewable unlike conventional energy sources, such as petroleum, coal, nuclear energy, etc. The raw materials of the biofuel are wide, and crop straws, forestry processing residues, livestock and poultry manure, organic wastewater and waste residues of food processing industry, municipal refuse and other low-quality lands can be utilized to plant various energy plants. All the life substances of the biofuel can enter the biological circulation of the earth, and zero emission is achieved. However, compared with the traditional fuels such as coal and the like, the biofuel has certain defects, such as low carbon content and high oxygen content, so that the biofuel has low heat value, high hydrogen content and obviously more volatile components.
Through retrieval, the Chinese patent with the application number of CN201210314516.4 discloses a biomass fuel and a preparation method thereof, wherein the biomass fuel is prepared by adding a proper amount of illegal cooking oil into straws, and the mass ratio of the straws to the illegal cooking oil is 10-15; the straws are wheat straws, soybean straws, rice straws or cotton straws; filtering the illegal cooking oil, and removing water; the preparation method comprises the following steps: pretreatment of raw materials: drying and crushing the straws to 1-2 cm; filtering and removing water from the swill-cooked dirty oil; drying materials: mixing straw and swill-cooked dirty oil uniformly, and drying until the water content is 5-8%; material molding: conveying the materials to briquetting equipment for forming; and (7) packaging and warehousing. The biomass fuel and the preparation method thereof in the above patent have the following disadvantages: during combustion, a large amount of substances such as carbon dioxide and the like are released, and the problem of environmental pollution exists.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides an energy-saving and environment-friendly biomass fuel and a preparation method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
an energy-saving and environment-friendly biomass fuel comprises the following components in parts by weight: 80 parts of forestry and agricultural residues, 45 parts of animal wastes, 35 parts of coal slime, 7 parts of combustion improver, 5 parts of desulfurizer, 6 parts of denitrifier, 4 parts of dechlorinating agent and 8 parts of high clay;
the agricultural and forestry waste is one or more of weeds, sawdust, fruit shells and fruit peels, rice hulls, straws, branches and leaves.
Preferably: the animal manure includes, but is not limited to, sheep manure, horse manure, and cow manure.
Preferably: the combustion improver is one of potassium nitrate, magnesium oxide powder, sodium hydroxide and potassium oxide.
Preferably: the desulfurizer is any one or more than two of ferric oxide, copper oxide, zinc oxide, barium hydroxide, quicklime and calcium carbonate.
Preferably: the weight ratio of the denitrifier to the nitrogen-removing agent is 4: 2: 1: 2, calcium oxide, silicon dioxide, titanium dioxide and aluminum oxide.
Preferably: the antichlor is sodium thiosulfate.
The preparation method of the energy-saving and environment-friendly biomass fuel comprises the following steps:
s1: taking agricultural and forestry wastes, animal wastes and coal slime as raw materials, and naturally airing until the water content is 8% -12%;
s2: taking the dried agricultural and forestry wastes, animal wastes and coal slime, and sequentially crushing the agricultural and forestry wastes, the animal wastes and the coal slime until the particle size is less than or equal to 2 mm;
s3: taking the crushed agricultural and forestry waste, animal manure and coal slime according to the component ratio, fully mixing, and then carrying out microwave treatment for 30min, wherein the temperature is controlled to be 120-150 ℃ until the water content reaches 4-7%;
s4: adding a combustion improver, a desulfurizer, a denitrifier and a dechlorinating agent into the mixture, and uniformly stirring at 130 ℃;
s5: finally, adding high clay, and quickly stirring for 15min to obtain a mixed material;
s6: transferring the mixed material into a forming die or equipment for extrusion forming to obtain granular fuel;
s7: and cooling the granular fuel to normal temperature and packaging.
The invention has the beneficial effects that:
1. by adding the combustion improver desulfurizer, the denitrifier and the dechlorinating agent, the sulfur content, the nitrogen content and the chlorine content of the fuel are effectively reduced, the release of harmful substances such as nitrogen dioxide, carbon dioxide and the like is reduced, potassium ions and chloride ions are removed, the pollution to the environment is prevented, the energy is saved, the environment is protected, the generation of potassium chloride in the combustion process is reduced, the corrosivity to combustion equipment is avoided, and the combustion efficiency of the boiler is improved.
2. The invention takes the agricultural and forestry wastes, the animal wastes and the coal slime as raw materials, the combination of the three raw materials increases the inflammability of the fuel, improves the combustion continuity of the fuel, can be recycled, improves the resource utilization rate, and has reasonable utilization of the waste materials.
3. According to the invention, the high clay component is added, so that the condensation force of the fuel can be increased, tar in the flue gas can be adsorbed, the prepared finished product has compact and non-loose particles, is convenient to store, and the raw materials are renewable energy sources, so that the fuel has the characteristics of energy conservation, environmental protection, high heat generation and no coking.
Drawings
Fig. 1 is a schematic flow chart of a preparation method of an energy-saving and environment-friendly biomass fuel provided by the invention.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
Example 1:
an energy-saving and environment-friendly biomass fuel is shown in figure 1 and comprises the following components in parts by weight: 80 parts of forestry and agricultural residues, 45 parts of animal wastes, 35 parts of coal slime, 7 parts of combustion improver, 6 parts of desulfurizer, 6 parts of denitrifier, 4 parts of dechlorinating agent and 8 parts of high clay.
The agricultural and forestry waste is one or more of weeds, sawdust, fruit shells and fruit peels, rice hulls, straws, branches and leaves.
The animal manure includes, but is not limited to, sheep manure, horse manure, cow manure, and the like.
The combustion improver is one of potassium nitrate, magnesium oxide powder, sodium hydroxide and potassium oxide.
The desulfurizer is any one or more than two of ferric oxide, copper oxide, zinc oxide, barium hydroxide, quicklime and calcium carbonate.
The weight ratio of the denitrifier to the nitrogen-removing agent is 4: 2: 1: 2, calcium oxide, silicon dioxide, titanium dioxide and aluminum oxide.
The antichlor is sodium thiosulfate.
When the embodiment is used, agricultural and forestry wastes, animal wastes and coal slime are used as raw materials, the three raw materials are combined to increase the flammability of the fuel, improve the continuity of fuel combustion, can be recycled, improve the resource utilization rate, the waste materials are reasonably utilized, and are energy-saving and environment-friendly, the sulfur content, the nitrogen content and the chlorine content of the fuel are effectively reduced by adding a combustion improver desulfurizer, a denitrifier and a dechlorinating agent, the release of harmful substances such as nitrogen dioxide, carbon dioxide and the like is reduced, potassium ions and chloride ions are removed, the environmental pollution is prevented, the generation of potassium chloride in the combustion process is effectively reduced, the corrosivity to combustion equipment is avoided, the combustion efficiency of a boiler is improved, the high clay component is added to increase the condensation power of the fuel, tar in the flue gas is adsorbed, the prepared finished product particles are compact and not loose and are convenient to store, and the raw materials are all energy sources, the method has the characteristics of energy conservation, environmental protection, high heat productivity and no coking.
Example 2:
an energy-saving and environment-friendly biomass fuel is shown in figure 1 and comprises the following components in parts by weight: 75 parts of forestry and agricultural residues, 30 parts of animal wastes, 30 parts of coal slime, 3 parts of combustion improver, 4 parts of desulfurizer, 3 parts of denitrifier, 4 parts of dechlorinating agent and 5 parts of high clay.
The agricultural and forestry waste is one or more of weeds, sawdust, fruit shells and fruit peels, rice hulls, straws, branches and leaves.
The animal manure includes, but is not limited to, sheep manure, horse manure, cow manure, and the like.
The combustion improver is one of potassium nitrate, magnesium oxide powder, sodium hydroxide and potassium oxide.
The desulfurizer is any one or more than two of ferric oxide, copper oxide, zinc oxide, barium hydroxide, quicklime and calcium carbonate.
The weight ratio of the denitrifier to the nitrogen-removing agent is 4: 2: 1: 2, calcium oxide, silicon dioxide, titanium dioxide and aluminum oxide.
The antichlor is sodium thiosulfate.
When the embodiment is used, agricultural and forestry wastes, animal wastes and coal slime are used as raw materials, the three raw materials are combined to increase the flammability of the fuel, improve the continuity of fuel combustion, can be recycled, improve the resource utilization rate, and ensure reasonable utilization of waste materials, the combustion improver desulfurizer, the denitrifier and the dechlorinating agent are added to effectively reduce the sulfur content, the nitrogen content and the chlorine content of the fuel, reduce the release of harmful substances such as nitrogen dioxide, carbon dioxide and the like, remove potassium ions and chloride ions, prevent environmental pollution, save energy and protect environment, effectively reduce the generation of potassium chloride in the combustion process, thereby avoiding the corrosivity to combustion equipment, improving the combustion efficiency of a boiler, adding high clay components to increase the condensation power of the fuel, adsorbing tar in flue gas, and ensuring that the prepared finished product has compact and loose particles and convenient storage, and the raw materials are all energy sources, the method has the characteristics of energy conservation, environmental protection, high heat productivity and no coking.
Example 3:
an energy-saving and environment-friendly biomass fuel is shown in figure 1 and comprises the following components in parts by weight: 60 parts of forestry and agricultural residues, 30 parts of animal wastes, 50 parts of coal slime, 5 parts of combustion improver, 5 parts of desulfurizer, 4 parts of denitrifier, 4 parts of dechlorinating agent and 5 parts of high clay.
The agricultural and forestry waste is one or more of weeds, sawdust, fruit shells and fruit peels, rice hulls, straws, branches and leaves.
The animal manure includes, but is not limited to, sheep manure, horse manure, cow manure, and the like.
The combustion improver is one of potassium nitrate, magnesium oxide powder, sodium hydroxide and potassium oxide.
The desulfurizer is any one or more than two of ferric oxide, copper oxide, zinc oxide, barium hydroxide, quicklime and calcium carbonate.
The weight ratio of the denitrifier to the nitrogen-removing agent is 4: 2: 1: 2, calcium oxide, silicon dioxide, titanium dioxide and aluminum oxide.
The antichlor is sodium thiosulfate.
When the embodiment is used, agricultural and forestry wastes, animal wastes and coal slime are used as raw materials, the three raw materials are combined to increase the flammability of the fuel, improve the continuity of fuel combustion, can be recycled, improve the resource utilization rate, the waste materials are reasonably utilized, and are energy-saving and environment-friendly, the sulfur content, the nitrogen content and the chlorine content of the fuel are effectively reduced by adding a combustion improver desulfurizer, a denitrifier and a dechlorinating agent, the release of harmful substances such as nitrogen dioxide, carbon dioxide and the like is reduced, potassium ions and chloride ions are removed, the environmental pollution is prevented, the generation of potassium chloride in the combustion process is effectively reduced, the corrosivity to combustion equipment is avoided, the combustion efficiency of a boiler is improved, the high clay component is added to increase the condensation power of the fuel, tar in the flue gas is adsorbed, the prepared finished product particles are compact and not loose and are convenient to store, and the raw materials are all energy sources, the method has the characteristics of energy conservation, environmental protection, high heat productivity and no coking.
Example 4:
an energy-saving and environment-friendly biomass fuel is shown in figure 1 and comprises the following components in parts by weight: 45 parts of forestry and agricultural residues, 55 parts of animal wastes, 40 parts of coal slime, 3 parts of combustion improver, 2 parts of desulfurizer, 3 parts of denitrifier, 2 parts of dechlorinating agent and 6 parts of high-viscosity soil.
The agricultural and forestry waste is one or more of weeds, sawdust, fruit shells and fruit peels, rice hulls, straws, branches and leaves.
The animal manure includes, but is not limited to, sheep manure, horse manure, cow manure, and the like.
The combustion improver is one of potassium nitrate, magnesium oxide powder, sodium hydroxide and potassium oxide.
The desulfurizer is any one or more than two of ferric oxide, copper oxide, zinc oxide, barium hydroxide, quicklime and calcium carbonate.
The weight ratio of the denitrifier to the nitrogen-removing agent is 4: 2: 1: 2, calcium oxide, silicon dioxide, titanium dioxide and aluminum oxide.
The antichlor is sodium thiosulfate.
Example 5
An energy-saving and environment-friendly preparation method of the biomass fuel of embodiment 1 is shown in fig. 1, and comprises the following steps:
s1: taking agricultural and forestry wastes, animal wastes and coal slime as raw materials, and naturally airing until the water content is 8% -12%;
s2: taking the dried agricultural and forestry wastes, animal wastes and coal slime, and sequentially crushing the agricultural and forestry wastes, the animal wastes and the coal slime until the particle size is less than or equal to 2 mm;
s3: taking the crushed agricultural and forestry waste, animal manure and coal slime according to the component ratio, fully mixing, and then carrying out microwave treatment for 30min, wherein the temperature is controlled to be 120-150 ℃ until the water content reaches 4-7%;
s4: adding a combustion improver, a desulfurizer, a denitrifier and a dechlorinating agent into the mixture, and uniformly stirring at 130 ℃;
s5: finally, adding high clay, and quickly stirring for 15min to obtain a mixed material;
s6: transferring the mixed material into a forming die or equipment for extrusion forming to obtain granular fuel;
s7: and cooling the granular fuel to normal temperature and packaging.
When the embodiment is used, agricultural and forestry wastes, animal wastes and coal slime are used as raw materials, the three raw materials are combined to increase the flammability of the fuel, improve the continuity of fuel combustion, can be recycled, improve the resource utilization rate, the waste materials are reasonably utilized, and are energy-saving and environment-friendly, the sulfur content, the nitrogen content and the chlorine content of the fuel are effectively reduced by adding a combustion improver desulfurizer, a denitrifier and a dechlorinating agent, the release of harmful substances such as nitrogen dioxide, carbon dioxide and the like is reduced, potassium ions and chloride ions are removed, the environmental pollution is prevented, the generation of potassium chloride in the combustion process is effectively reduced, the corrosivity to combustion equipment is avoided, the combustion efficiency of a boiler is improved, the high clay component is added to increase the condensation power of the fuel, tar in the flue gas is adsorbed, the prepared finished product particles are compact and not loose and are convenient to store, and the raw materials are all energy sources, the method has the characteristics of energy conservation, environmental protection, high heat productivity and no coking.
The following are the comparison of various parameters of the biomass fuels prepared in examples 1 to 4 with conventional biomass fuels:
the above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. The energy-saving and environment-friendly biomass fuel is characterized by comprising the following components in parts by weight: 80 parts of forestry and agricultural residues, 45 parts of animal wastes, 35 parts of coal slime, 7 parts of combustion improver, 6 parts of desulfurizer, 6 parts of denitrifier, 4 parts of dechlorinating agent and 8 parts of high clay;
the agricultural and forestry waste is one or more of weeds, sawdust, fruit shells and fruit peels, rice hulls, straws, branches and leaves.
2. The energy-saving and environment-friendly biomass fuel as claimed in claim 1, wherein the animal manure comprises but is not limited to sheep manure, horse manure and cow manure.
3. The energy-saving environment-friendly biomass fuel as claimed in claim 2, wherein the combustion improver is one of potassium nitrate, magnesium oxide powder, sodium hydroxide and potassium oxide.
4. The energy-saving and environment-friendly biomass fuel as claimed in claim 3, wherein the desulfurizer is any one or more than two of iron oxide, copper oxide, zinc oxide, barium hydroxide, quicklime and calcium carbonate.
5. The energy-saving and environment-friendly biomass fuel as claimed in claim 4, wherein the denitrifier is prepared from the following components in a weight ratio of 4: 2: 1: 2, calcium oxide, silicon dioxide, titanium dioxide and aluminum oxide.
6. The energy-saving and environment-friendly biomass fuel as claimed in claim 5, wherein the dechlorinating agent is sodium thiosulfate.
7. The preparation method of the energy-saving and environment-friendly biomass fuel according to any one of claims 1 to 6, characterized by comprising the following steps:
s1: taking agricultural and forestry wastes, animal wastes and coal slime as raw materials, and naturally airing until the water content is 8% -12%;
s2: taking the dried agricultural and forestry wastes, animal wastes and coal slime, and sequentially crushing the agricultural and forestry wastes, the animal wastes and the coal slime until the particle size is less than or equal to 2 mm;
s3: taking the crushed agricultural and forestry waste, animal manure and coal slime according to the component ratio, fully mixing, and then carrying out microwave treatment for 30min, wherein the temperature is controlled to be 120-150 ℃ until the water content reaches 4-7%;
s4: adding a combustion improver, a desulfurizer, a denitrifier and a dechlorinating agent into the mixture, and uniformly stirring at 130 ℃;
s5: finally, adding high clay, and quickly stirring for 15min to obtain a mixed material;
s6: transferring the mixed material into a forming die or equipment for extrusion forming to obtain granular fuel;
s7: and cooling the granular fuel to normal temperature and packaging.
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