CN108913273B - Method for reducing combustion ash content of crop biomass fuel - Google Patents

Method for reducing combustion ash content of crop biomass fuel Download PDF

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Publication number
CN108913273B
CN108913273B CN201810735626.5A CN201810735626A CN108913273B CN 108913273 B CN108913273 B CN 108913273B CN 201810735626 A CN201810735626 A CN 201810735626A CN 108913273 B CN108913273 B CN 108913273B
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fuel
biomass fuel
combustion
crop biomass
ash content
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CN108913273A (en
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严晓武
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Hefei Jinggu Agricultural Technology Development Co ltd
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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
    • 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
    • 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
    • C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/08—Drying or removing water
    • 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
    • C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/24—Mixing, stirring of fuel components
    • 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
    • C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/30—Pressing, compressing or compacting
    • 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
    • C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/32—Molding or moulds
    • 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
    • Y02E50/10—Biofuels, e.g. bio-diesel
    • 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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  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

The invention relates to the technical field of modern agricultural industry, and discloses a method for reducing combustion ash content of crop biomass fuel, which is characterized in that a prepared combustion-supporting material is added in the processing of the crop biomass fuel, and the combustion reaction is accelerated through electron transfer in the combustion process, so that the activation of the fuel can be enhanced, the ignition point is reduced, the ignition speed is high, the combustion process is more complete, the burnout performance is improved, the combustion residual ash content is reduced, the desulfurization effect is achieved, and the emission of polluted gas can be reduced.

Description

Method for reducing combustion ash content of crop biomass fuel
Technical Field
The invention belongs to the technical field of modern agricultural industry, and particularly relates to a method for reducing combustion ash content of crop biomass fuel.
Background
Biomass fuel: the biomass fuel is prepared by burning biomass materials as fuel, mainly agricultural and forestry wastes (such as straw, sawdust, bagasse, rice chaff and the like) generally, and is mainly different from fossil fuel. In the current national policy and environmental protection standard, the direct combustion biomass belongs to a high-pollution fuel, is only used in a rural large stove and is not allowed to be used in a city. The application of biomass fuel, which is actually mainly biomass briquette fuel, is a novel clean fuel which is prepared by taking agricultural and forestry wastes as raw materials and preparing the raw materials into various briquettes, granules and the like through the processes of crushing, mixing, extruding, drying and the like and can be directly combusted.
The crop wastes are used as a wide source, the direct combustion has low combustion value and can cause great pollution to the environment, so that the utilization rate of the wastes can be improved and the pollution can be reduced by processing the crop wastes into the biomass dye. And because the ash content of the crop waste is high, the crop waste is processed into biomass fuel, the biomass fuel is influenced by the raw material proportion and the biomass particle structure, the burnout performance is poor, and the problems of insufficient combustion and large residual ash proportion still exist.
Disclosure of Invention
The invention aims to solve the existing problems and provides a method for reducing combustion ash content of crop biomass fuel, which can enhance the fuel activity, reduce ignition points, increase the ignition speed, increase the combustion speed, ensure a more complete combustion process, improve the burnout performance and reduce the combustion residual ash content.
The invention is realized by the following technical scheme:
a method for reducing combustion ash content of crop biomass fuel is characterized in that in the processing and preparation of the crop biomass fuel, a combustion-supporting material accounting for 1.5-1.6% of the mass fraction of a fuel raw material is added and processed into fuel particles with diameters ranging from 4 cm to 5 cm, and the preparation method of the combustion-supporting material comprises the following steps:
(1) mixing alkaline soil, fly ash and plant ash according to the mass ratio of 15-18:6-7:1-2, weighing 1.0-1.2 kg of mixed material, placing the mixed material in a muffle furnace preheated at 250 ℃ and 230 ℃, heating to 440 ℃ at the speed of 4-5 ℃/min, calcining for 2-3 hours, then cooling to 20-30 ℃ at the speed of 7-9 ℃/min, and grinding the obtained calcined material until the particle size is 10-30 meshes;
(2) adding the grinding material obtained in the step (1) into 1.8-2.0 kg of cellulose pulp, adding 160-180 g of hematite powder, 100-110 g of calcium chloride powder and 40-45 g of molybdenum oxide powder, stirring for 30-40 minutes at the rotating speed of 1200-1300 rpm, then adding 20-25 ml of N, N-dimethylacetamide and 140-150 ml of sodium chloride solution into the stirring liquid, and continuously stirring for 20-30 minutes at the speed of 500-600 rpm.
As further description of the scheme, the auxiliary fuel and the crop biomass material are uniformly mixed and then are compressed and formed in a high-pressure forming machine, and the mixture is dried, wherein the forming pressure is 20-22MPa, and the drying temperature is 80-90 ℃.
As a further description of the above scheme, the pH value of the alkaline soil in the step (1) is in the range of 7.2-7.3.
As a further description of the above-mentioned scheme, the cellulose pulp in the step (2) is a mixed pulp obtained by mixing cellulose powder with a sodium hydroxide solution having a mass concentration of 16 to 20% in a mass ratio of 1:4 to 5 and stirring at 25 to 30 ℃ for 3 to 4 hours.
As a further description of the scheme, the mass concentration of the sodium chloride solution in the step (2) is 35-40%.
Compared with the prior art, the invention has the following advantages: in order to solve the problem of large combustion residual ash of the existing crop biomass fuel, the invention provides a method for reducing the combustion ash of the crop biomass fuel, which adds the prepared combustion-supporting material in the processing of the crop biomass fuel, the activation of the fuel can be enhanced, the ignition point can be reduced, the ignition speed is high, the combustion process is more complete, the burnout performance is improved, the residual ash content in combustion is reduced, the invention effectively solves the problem of large residual ash content in combustion of the biomass dye of crops, improves the utilization value of crop waste and the combustion value of biomass fuel, can realize the practical significance of maximizing the utilization of resources and protecting the environment, and is a technical scheme which is extremely worthy of popularization and use.
Detailed Description
In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is further described with reference to specific embodiments, and it should be understood that the specific embodiments described herein are only used for explaining the present invention and are not used for limiting the technical solutions provided by the present invention.
Example 1
A method for reducing combustion ash content of crop biomass fuel is characterized in that in the processing and preparation of the crop biomass fuel, an auxiliary fuel accounting for 1.5% of the mass fraction of a fuel raw material is added and is jointly processed into fuel particles with the diameter ranging from 4 cm to 5 cm, and the preparation method of the auxiliary fuel comprises the following steps:
(1) mixing alkaline soil, fly ash and plant ash according to the mass ratio of 15:6:1, weighing 1.0 kg of mixed material, placing the mixed material in a muffle furnace preheated at 230 ℃, heating to 400 ℃ at the speed of 4 ℃/min, calcining for 2 hours, then cooling to 20 ℃ at the speed of 7 ℃/min, and grinding the obtained calcined material until the particle size is 10-30 meshes;
(2) adding the ground material obtained in the step (1) into 1.8 kg of cellulose pulp, adding 160 g of hematite powder, 100 g of calcium chloride powder and 40 g of molybdenum oxide powder, stirring for 30 minutes at the rotation speed of 1200 revolutions per minute, then adding 20 ml of N, N-dimethylacetamide and 140 ml of sodium chloride solution into the stirring liquid, and continuing stirring for 20 minutes at the speed of 500 revolutions per minute.
As further description of the scheme, the auxiliary fuel and the crop biomass material are uniformly mixed and then are compressed and formed in a high-pressure forming machine, and the mixture is dried, wherein the forming pressure is 20MPa, and the drying temperature is 80 ℃.
As a further description of the above scheme, the pH value of the alkaline soil in the step (1) is in the range of 7.2-7.3.
As a further description of the above-mentioned scheme, the cellulose pulp in the step (2) is a mixed pulp obtained by mixing cellulose powder with a sodium hydroxide solution having a mass concentration of 16% at a mass ratio of 1:4 and stirring at 25 ℃ for 3 hours.
As a further description of the above scheme, the mass concentration of the sodium chloride solution in the step (2) is 35%.
Example 2
A method for reducing combustion ash content of crop biomass fuel is characterized in that in the processing and preparation of the crop biomass fuel, an auxiliary fuel accounting for 1.55% of the mass fraction of a fuel raw material is added and is processed into fuel particles with diameters ranging from 4 cm to 5 cm, and the preparation method of the auxiliary fuel comprises the following steps:
(1) mixing alkaline soil, fly ash and plant ash according to the mass ratio of 16:6.5:1.5, weighing 1.1 kg of mixed material, placing the mixed material in a muffle furnace preheated at 240 ℃, heating to 420 ℃ at the speed of 4.5 ℃/min, calcining for 2.5 hours, then cooling to 25 ℃ at the speed of 8 ℃/min, and grinding the obtained calcined material until the particle size is 10-30 meshes;
(2) adding the ground material obtained in the step (1) into 1.9 kg of cellulose pulp, adding 170 g of hematite powder, 105 g of calcium chloride powder and 42 g of molybdenum oxide powder, stirring at the rotating speed of 1250 revolutions per minute for 35 minutes, then adding 22 ml of N, N-dimethylacetamide and 145 ml of sodium chloride solution into the stirring liquid, and continuing to stir at the speed of 550 revolutions per minute for 25 minutes.
As further description of the scheme, the auxiliary fuel and the crop biomass material are uniformly mixed and then are compressed and formed in a high-pressure forming machine, and the mixture is dried, wherein the forming pressure is 21MPa, and the drying temperature is 85 ℃.
As a further description of the above scheme, the pH value of the alkaline soil in the step (1) is in the range of 7.2-7.3.
As a further description of the above-mentioned scheme, the cellulose pulp in the step (2) is a mixed pulp obtained by mixing cellulose powder with a sodium hydroxide solution having a mass concentration of 18% at a mass ratio of 1:4.5 and stirring at 28 ℃ for 3.5 hours.
As a further description of the above scheme, the mass concentration of the sodium chloride solution in the step (2) is 38%.
Example 3
A method for reducing combustion ash content of crop biomass fuel is characterized in that in the processing and preparation of the crop biomass fuel, an auxiliary fuel accounting for 1.6% of the mass fraction of a fuel raw material is added and is jointly processed into fuel particles with the diameter ranging from 4 cm to 5 cm, and the preparation method of the auxiliary fuel comprises the following steps:
(1) mixing alkaline soil, fly ash and plant ash according to the mass ratio of 18:7:2, weighing 1.2 kg of mixed material, placing the mixed material in a muffle furnace preheated at 250 ℃, heating to 440 ℃ at the speed of 5 ℃/min, calcining for 3 hours, then cooling to 30 ℃ at the speed of 9 ℃/min to obtain a calcined substance, and grinding the calcined substance until the particle size is 10-30 meshes;
(2) adding the ground material obtained in the step (1) into 2.0 kg of cellulose pulp, adding 180 g of hematite powder, 110 g of calcium chloride powder and 45 g of molybdenum oxide powder, stirring at the rotating speed of 1300 rpm for 40 minutes, then adding 25 ml of N, N-dimethylacetamide and 150 ml of sodium chloride solution into the stirring liquid, and continuously stirring at the speed of 600 rpm for 30 minutes.
As further description of the scheme, the auxiliary fuel and the crop biomass material are uniformly mixed and then are compressed and formed in a high-pressure forming machine, and the mixture is dried, wherein the forming pressure is 22MPa, and the drying temperature is 90 ℃.
As a further description of the above scheme, the pH value of the alkaline soil in the step (1) is in the range of 7.2-7.3.
As a further description of the above-mentioned scheme, the cellulose pulp in the step (2) is a mixed pulp obtained by mixing cellulose powder with a sodium hydroxide solution having a mass concentration of 20% at a mass ratio of 1:5 and stirring at 30 ℃ for 4 hours.
As a further description of the above scheme, the mass concentration of the sodium chloride solution in the step (2) is 40%.
Comparative example 1
The difference from the example 1 is only that the added combustion-supporting material accounts for 1.8 percent of the mass fraction of the fuel raw material, and the rest is consistent.
Comparative example 2
The difference from the example 2 is only that in the preparation of the auxiliary fuel, alkaline soil, fly ash and plant ash are mixed according to the mass ratio of 8-10:4-5:1-2, and the rest is consistent.
Comparative example 3
The only difference from example 3 is that the cellulose pulp was replaced with an equal amount of glucose syrup, the calcination process in step (1) was omitted, and the rest remained the same.
Comparative example 4
The only difference from example 3 is that the addition of calcium chloride powder and molybdenum oxide powder in step (2) was omitted and the rest remained the same.
Comparative experiment
The method of examples 1-3 and comparative examples 1-4 are respectively used for reducing combustion ash content of crop biomass fuel, a method of adding the same amount of clay as a combustion improver is used as a control group, and the used crop biomass fuel raw material is prepared from the following components in parts by weight: 70 parts of rice straw, 50 parts of corn straw, 45 parts of soybean straw, 30 parts of peanut shell, 25 parts of rice hull and 20 parts of tobacco stem are respectively processed and prepared according to the formula method to obtain crop biomass fuel, irrelevant variables are kept consistent in the test, the combustion performance of the fuel is tested, the statistical analysis of the results is carried out, and the results are shown in the following table:
Figure 896603DEST_PATH_IMAGE002
the invention effectively solves the problem of large combustion residual ash of the crop biomass dye, improves the utilization value of crop waste and the combustion value of biomass fuel, can realize the practical significance of maximizing the utilization of resources and protecting the environment, and is a technical scheme which is extremely worthy of popularization and use.

Claims (5)

1. A method for reducing combustion ash content of crop biomass fuel is characterized in that in the processing and preparation of the crop biomass fuel, combustion-supporting material accounting for 1.5-1.6% of the mass fraction of fuel raw materials is added and processed into fuel particles with diameters ranging from 4 cm to 5 cm, and the preparation method of the combustion-supporting material comprises the following steps:
(1) mixing alkaline soil, fly ash and plant ash according to the mass ratio of 15-18:6-7:1-2, weighing 1.0-1.2 kg of mixed material, placing the mixed material in a muffle furnace preheated at 250 ℃ and 230 ℃, heating to 440 ℃ at the speed of 4-5 ℃/min, calcining for 2-3 hours, then cooling to 20-30 ℃ at the speed of 7-9 ℃/min, and grinding the obtained calcined material until the particle size is 10-30 meshes;
(2) adding the grinding material obtained in the step (1) into 1.8-2.0 kg of cellulose pulp, adding 160-180 g of hematite powder, 100-110 g of calcium chloride powder and 40-45 g of molybdenum oxide powder, stirring for 30-40 minutes at the rotating speed of 1200-1300 rpm, then adding 20-25 ml of N, N-dimethylacetamide and 140-150 ml of sodium chloride solution into the stirring liquid, and continuously stirring for 20-30 minutes at the speed of 500-600 rpm.
2. The method for reducing the combustion ash content of the crop biomass fuel as claimed in claim 1, wherein the co-fuel and the crop biomass fuel are uniformly mixed and then are compressed and molded in a high-pressure molding machine, and then are dried, wherein the molding pressure is 20-22MPa, and the drying temperature is 80-90 ℃.
3. The method for reducing combustion ash of crop biomass fuel as claimed in claim 1, wherein the pH of alkaline soil in step (1) is in the range of 7.2-7.3.
4. The method for reducing combustion ash content of crop biomass fuel as claimed in claim 1, wherein the cellulose pulp of step (2) is a mixed pulp obtained by mixing cellulose powder with a sodium hydroxide solution having a mass concentration of 16-20% in a mass ratio of 1:4-5 and stirring at 25-30 ℃ for 3-4 hours.
5. The method for reducing the combustion ash content of the crop biomass fuel as claimed in claim 1, wherein the mass concentration of the sodium chloride solution in the step (2) is 35-40%.
CN201810735626.5A 2018-07-06 2018-07-06 Method for reducing combustion ash content of crop biomass fuel Expired - Fee Related CN108913273B (en)

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CN101165147A (en) * 2006-10-18 2008-04-23 李德本 Liquid combustion adjuvant for coal
CN103013611A (en) * 2012-12-26 2013-04-03 济南三农能源科技有限公司 Biomass curing-forming fuel and preparation method thereof
JP2014043535A (en) * 2012-08-29 2014-03-13 Taiheiyo Cement Corp Production method of combustion ash molded article, and fuel and reducing agent
CN105296046A (en) * 2015-10-17 2016-02-03 明光市龙腾矿物有限公司 Biomass fuel containing calcareous shale and preparation method of biomass fuel
CN107987912A (en) * 2017-11-23 2018-05-04 桂林市安琪玫瑰农业发展有限公司 A kind of high-performance biomass solid fuel and preparation method thereof

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Publication number Priority date Publication date Assignee Title
CN1111588C (en) * 2000-07-21 2003-06-18 罗松涛 Long-acting coal-saving comburant
JP2008013738A (en) * 2006-07-06 2008-01-24 Biomass Products:Kk Fine powder fuel of lignocellulose biomass and its manufacturing method
CN105419899B (en) * 2015-12-23 2018-05-04 太仓东浔生物科技有限公司 A kind of biomass fuel and preparation method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101165147A (en) * 2006-10-18 2008-04-23 李德本 Liquid combustion adjuvant for coal
JP2014043535A (en) * 2012-08-29 2014-03-13 Taiheiyo Cement Corp Production method of combustion ash molded article, and fuel and reducing agent
CN103013611A (en) * 2012-12-26 2013-04-03 济南三农能源科技有限公司 Biomass curing-forming fuel and preparation method thereof
CN105296046A (en) * 2015-10-17 2016-02-03 明光市龙腾矿物有限公司 Biomass fuel containing calcareous shale and preparation method of biomass fuel
CN107987912A (en) * 2017-11-23 2018-05-04 桂林市安琪玫瑰农业发展有限公司 A kind of high-performance biomass solid fuel and preparation method thereof

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