CN110903874B - Moisture-proof and mildew-proof biomass granular fuel and preparation method thereof - Google Patents
Moisture-proof and mildew-proof biomass granular fuel and preparation method thereof Download PDFInfo
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- CN110903874B CN110903874B CN201911240246.5A CN201911240246A CN110903874B CN 110903874 B CN110903874 B CN 110903874B CN 201911240246 A CN201911240246 A CN 201911240246A CN 110903874 B CN110903874 B CN 110903874B
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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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- 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
- C10L5/445—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
- 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
- C10L5/447—Carbonized vegetable substances, e.g. charcoal, or produced by hydrothermal carbonization of biomass
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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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- 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)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ecology (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Sustainable Development (AREA)
- Agronomy & Crop Science (AREA)
- Combustion & Propulsion (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention belongs to the field of biological energy. A moisture-proof and mildew-proof biomass granular fuel comprises the following components in percentage by weight: 8-10 parts of camphor wood chips, 12-18 parts of modified straws, 10-15 parts of modified bamboo charcoal, 0.1-0.5 part of antibacterial agent and 0.1-0.5 part of catalyst. The invention has good mildew-proof and moisture-proof capability, high thermal efficiency and high combustion heat value.
Description
Technical Field
The invention belongs to the field of biological energy, and relates to a damp-proof and mildew-proof biomass granular fuel and a preparation method thereof.
Background
At present, most of fuels used by people are fossil energy sources such as kerosene, petroleum, natural gas and the like, are non-renewable resources, are gradually exhausted in large-scale exploitation of human beings, and can discharge a large amount of toxic gas during combustion to cause serious pollution.
The biomass fuel which takes forestry and agricultural residues, such as straws, sawdust, bagasse, rice chaff and the like as main raw materials has the advantages of high efficiency, cleanness, no pollution and the like, the biomass has low energy density and unstable combustion rate, and has the problems of difficult transportation and storage, the biomass is made into biomass particles by compact forming, which is an effective method for solving the problems of transportation and storage, the water content of the particles directly influences the properties of difficult forming, difficult ignition, combustion heat value, particle density, ash caking and the like of the fuel, the biomass can easily absorb moisture to cause damp and mildew, the existing biomass particle fuel can not meet the damp-proof and mildew-proof requirements, and the problems of difficult ignition, mildew and odor generation, low combustion efficiency and the like of the fuel due to easy moisture absorption and mildew after long-term storage.
Disclosure of Invention
The invention aims to solve the technical problem of providing the moisture-proof and mildew-proof biomass pellet fuel which has good mildew-proof and moisture-proof capabilities, high heat efficiency and high combustion heat value.
The technical scheme of the invention is as follows:
a moisture-proof and mildew-proof biomass granular fuel comprises the following components in percentage by weight: 8-10 parts of camphor wood chips, 12-18 parts of modified straws, 10-15 parts of modified bamboo charcoal, 0.1-0.5 part of antibacterial agent and 0.1-0.5 part of catalyst.
Further, the water content of the camphor wood chips and the modified straws is less than 8%.
Further, the preparation method of the modified straw comprises the following steps: dissolving 15-30 parts of sodium chloride in 150 parts of 50% ethanol aqueous solution to prepare a mixed solution a; crushing 25-35 parts of straws, adding the crushed straws into the mixed solution a, uniformly mixing, standing for 60-120min, performing microwave radiation for 3-5min under the condition of power of 800-.
Further, the straw is at least one of castor straw, sunflower straw, soybean straw and sorghum straw.
Further, the preparation method of the modified bamboo charcoal comprises the following steps: dissolving 30-45 parts of sodium benzoate in 90-110 parts of 50% ethanol water solution to prepare a mixed solution b; and (3) adding 20-30 parts of bamboo charcoal into the mixed solution b, stirring for 60-90min, filtering and drying to obtain the modified bamboo charcoal.
Furthermore, the drying temperature is 70-75 ℃, and the drying time is 2-3 h.
Further, the antibacterial agent is titanium dioxide.
Further, the catalyst is at least one of ferric oxide, ferroferric oxide, magnesium oxide and aluminum oxide.
The preparation method of the damp-proof and mildew-proof biomass granular fuel comprises the following steps: crushing camphor wood chips, performing superheated steam treatment at the temperature of 450-650 ℃, cooling to 75-80 ℃, adding modified straws, modified bamboo charcoal, an antibacterial agent and a catalyst, uniformly mixing, and performing extrusion molding by using a molding granulator.
The invention has the following beneficial effects:
the camphor wood chips selected by the invention have the moisture-proof and mildew-proof effects, meanwhile, the camphor wood is rich in grease which is beneficial to combustion, the activity and the cementing property of the camphor wood chips are improved by carrying out high-temperature superheated steam treatment on the camphor wood chips, the camphor wood chips can be tightly adhered with other materials in fuel, the granular fuel is easier to form, and the combustion stability of the fuel is ensured.
The modified straw selected by the invention is prepared from straw, ethanol water solution dissolved with sodium chloride and potassium permanganate, ethanol is vaporized and expanded under microwave heating, the diffusion rate of sodium chloride molecules is improved, and the volume of the straw and the action area of the straw and potassium permanganate are increased. The sodium chloride rapidly expands at high temperature, the potassium permanganate has good sterilization and corrosion resistance, and can be decomposed to generate oxygen when the fuel is combusted, and the sodium chloride and the potassium permanganate cooperate to effectively promote the fuel to be fully combusted and improve the thermal efficiency of the modified straw.
The selected modified bamboo charcoal is prepared from bamboo charcoal and an ethanol water solution dissolved with sodium benzoate, and the bamboo charcoal has antibacterial and mildewproof effects and a loose porous structure, and can reduce peculiar smell generated by burning camphor wood chips. During the preparation process, the ethanol is vaporized and expanded to increase the volume and porosity of pores, thereby being beneficial to sodium benzoate to diffuse among layers and load on the layers. The sodium benzoate can effectively sterilize and inhibit bacteria, prevent corrosion and mildew, and improve the stability and durability of the fuel.
The titanium dioxide serving as the antibacterial agent can form a protective film on the surface of the fuel to reduce water adsorption, prevent mildew and moisture, promote carbon formation and protect carbon residue during combustion, and improve the heat production efficiency of the fuel during combustion; the selected catalyst is matched to improve oxygen supply, promote complete combustion of the fuel and reduce the slag rate of the fuel.
Detailed Description
The present invention will be described in detail with reference to examples, which are only preferred embodiments of the present invention and are not intended to limit the present invention.
Examples
The following table is a formulation table (unit: parts) of 3 examples of the moisture and mildew resistant biomass pellet fuel of the present invention.
| Components | Example 1 | Example 2 | Example 3 |
| Camphor wood flour | 8 | 9 | 10 |
| Modified straw | 12 parts of castor straw and sunflower straw | 15 parts of castor straw and soybean straw | 18 parts of soybean straw and sorghum straw |
| Modified bamboo charcoal | 10 | 12 | 15 |
| Titanium dioxide | 0.1 | 0.3 | 0.5 |
| Catalyst and process for preparing same | 0.1 part of ferric oxide | 0.3 part of tetraoxideFerriferrous oxide, magnesium oxide | 0.5 part of aluminum oxide. |
The preparation method of the modified straw comprises the following steps: dissolving 15-30 parts of sodium chloride in 150 parts of 50% ethanol aqueous solution to prepare a mixed solution a; crushing 25-35 parts of straws, adding the crushed straws into the mixed solution a, uniformly mixing, standing for 60-120min, performing microwave radiation for 3-5min under the condition of power of 800-.
The preparation method of the modified bamboo charcoal comprises the following steps: dissolving 30-45 parts of sodium benzoate in 90-110 parts of 50% ethanol water solution to prepare a mixed solution b; and (3) adding 20-30 parts of bamboo charcoal into the mixed solution b, stirring for 60-90min, filtering and drying at 70-75 ℃ for 2-3h to obtain the modified bamboo charcoal.
The preparation method of the damp-proof and mildew-proof biomass granular fuel comprises the following steps: crushing camphor wood chips, performing superheated steam treatment at the temperature of 450-650 ℃, cooling to 75-80 ℃, adding modified straws, modified bamboo charcoal, an antibacterial agent and a catalyst, uniformly mixing, and performing extrusion molding by using a molding granulator.
Comparative example
The following table shows the formula (unit: part) of 3 comparative examples of the moisture-proof and mildew-proof biomass granular fuel of the invention, and the preparation method is the mixed extrusion molding which is conventional in the field.
| Components | Comparative example 1 | Comparative example 2 | Comparative example 3 |
| Camphor wood flour | 8 | 9 | 10 |
| Modified straw | 12 parts of castor straw and sunflower straw | / | 18 portions of soybean straw and sorghum straw |
| Straw and stalk | / | 11 parts of castor straw and soybean straw | / |
| Potassium permanganate | / | 2 | / |
| Sodium chloride | / | 2 | / |
| Modified bamboo charcoal | / | 12 | 15 |
| Bamboo charcoal | 9 | / | / |
| Sodium benzoate | 1 | / | / |
| Titanium dioxide | 0.1 | 0.3 | / |
| Modified starch | 1.5 | 1.5 | 1.5 |
| Catalyst and process for preparing same | 0.1 part of ferric oxide | 0.3 part of ferroferric oxide and magnesium oxide | 1 part of aluminum oxide. |
The combustion performance of the dampproof and mildewproof biomass granular fuel of the invention in comparative examples 1-3 and comparative examples 1-3 is tested, and the test results are shown in the following table.
| Sample (I) | Percent formation rate% | Degree of durability/%) | Lower calorific value (kcal/kg) | Combustion rate/%) | Slag rate/% |
| Example 1 | 98.2 | 99.1 | 4802 | 98.5 | 0.35 |
| Example 2 | 98.3 | 99.0 | 4881 | 98.7 | 0.32 |
| Example 3 | 98.5 | 99.5 | 4917 | 99.1 | 0.31 |
| Comparative example 1 | 96.4 | 95.6 | 4650 | 97.3 | 0.54 |
| Comparative example 2 | 96.3 | 94.5 | 4547 | 96.8 | 0.61 |
| Comparative example 3 | 96.7 | 92.1 | 4785 | 97.9 | 0.85。 |
Comparative examples 1-3 and comparative examples 1-3 of the moisture-proof and mildew-proof biomass granular fuel of the invention were tested for moisture content at RH68% humidity and for mildew after being subjected to Aspergillus niger dip-dyeing for 4 weeks according to GB/T18261-2000, and the test results are shown in the following table.
| Sample (I) | Moisture content/%) | Antibacterial mildew resistance% |
| Example 1 | 9.52 | 99.1 |
| Example 2 | 9.58 | 98.5 |
| Example 3 | 9.49 | 99.5 |
| Comparative example 1 | 10.43 | 88.3 |
| Comparative example 2 | 10.65 | 86.6 |
| Comparative example 3 | 11.38 | 76.9。 |
Therefore, the invention has higher forming rate, durability, low calorific value and combustion rate, low slagging rate and good moisture-proof and mildew-proof capabilities.
The dampproof and mildewproof biomass granular fuel has good mildewproof and dampproof capabilities, high thermal efficiency and high combustion heat value.
Claims (8)
1. The moisture-proof and mildew-proof biomass granular fuel is characterized by comprising the following components in percentage by weight: 8-10 parts of camphor wood chips, 12-18 parts of modified straws, 10-15 parts of modified bamboo charcoal, 0.1-0.5 part of antibacterial agent and 0.1-0.5 part of catalyst;
the preparation method of the modified straw comprises the following steps: dissolving 15-30 parts of sodium chloride in 150 parts of 50% ethanol aqueous solution to prepare a mixed solution a; crushing 25-35 parts of straws, adding the crushed straws into the mixed solution a, uniformly mixing, standing for 60-120min, performing microwave radiation for 3-5min under the condition of power of 800-.
2. The damp-proof and mildew-proof biomass pellet fuel as claimed in claim 1, wherein the moisture content of the camphor wood chips and the modified straws is less than 8%.
3. The damp-proof and mildew-proof biomass pellet fuel as claimed in claim 1, wherein the straw is at least one of castor straw, sunflower straw, soybean straw and sorghum straw.
4. The damp-proof and mildew-proof biomass granular fuel as claimed in claim 1, wherein the preparation method of the modified bamboo charcoal comprises the following steps: dissolving 30-45 parts of sodium benzoate in 90-110 parts of 50% ethanol water solution to prepare a mixed solution b; and (3) adding 20-30 parts of bamboo charcoal into the mixed solution b, stirring for 60-90min, filtering and drying to obtain the modified bamboo charcoal.
5. The damp-proof and mildew-proof biomass granular fuel as claimed in claim 4, wherein the drying temperature is 70-75 ℃, and the drying time is 2-3 h.
6. The damp-proof and mildew-proof biomass pellet fuel of claim 1, wherein the antimicrobial agent is titanium dioxide.
7. The damp-proof and mildew-proof biomass granular fuel as claimed in claim 1, wherein the catalyst is at least one of ferric oxide, ferroferric oxide, magnesium oxide and aluminum oxide.
8. The preparation method of the moisture-proof and mildew-proof biomass granular fuel as claimed in claim 1, characterized by comprising the following steps: crushing camphor wood chips, performing superheated steam treatment at the temperature of 450-650 ℃, cooling to 75-80 ℃, adding modified straws, modified bamboo charcoal, an antibacterial agent and a catalyst, uniformly mixing, and performing extrusion molding by using a molding granulator.
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| CN110903874B true CN110903874B (en) | 2021-02-23 |
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| CN107365612A (en) * | 2017-08-08 | 2017-11-21 | 龙门县景龙生物能源有限公司 | A kind of bio-fuel particle of shelf-stable and preparation method thereof |
| CN107903979A (en) * | 2017-12-28 | 2018-04-13 | 河南省国泰安信息技术有限公司 | A kind of biomass fuel with antimildew function |
| CN108774559A (en) * | 2018-07-03 | 2018-11-09 | 合肥市晶谷农业科技开发有限公司 | A kind of preparation method of moistureproof and mildewproof biomass granule fuel |
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Effective date of registration: 20210519 Address after: 516860 xiawu village, zhengma highway, Mazha Town, Longmen County, Huizhou City, Guangdong Province (Ye Jiezhen house) Patentee after: Huizhou Jingfeng environmental protection new energy Co.,Ltd. Address before: 516860 Huizhou County, Longmen, Guangdong Province Patentee before: LONGMEN JINGLONG BIO-ENERGY Co.,Ltd. |
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