CN108192682B - Environment-friendly recycling method for waste wood chips of arbor - Google Patents

Environment-friendly recycling method for waste wood chips of arbor Download PDF

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CN108192682B
CN108192682B CN201810138160.0A CN201810138160A CN108192682B CN 108192682 B CN108192682 B CN 108192682B CN 201810138160 A CN201810138160 A CN 201810138160A CN 108192682 B CN108192682 B CN 108192682B
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parts
powder
wood chips
waste
arbor
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CN108192682A (en
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杨静
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Fuding Zhuoyue Intellectual Property Management Co ltd
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Guangxi Aishangjia Household 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
    • 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
    • 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
    • C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
    • C10L5/04—Raw material of mineral origin to be used; Pretreatment thereof
    • 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
    • C10L5/02—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
    • C10L5/14—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders with organic binders
    • C10L5/146—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders with organic binders with wax, e.g. paraffin wax
    • 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
    • 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
    • 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
    • C10L2230/00—Function and purpose of a components of a fuel or the composition as a whole
    • C10L2230/22—Function and purpose of a components of a fuel or the composition as a whole for improving fuel economy or fuel efficiency
    • 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
    • C10L2290/02—Combustion or pyrolysis
    • 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
    • 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
    • C10L2290/34—Applying ultrasonic energy
    • 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
    • C10L2290/36—Applying radiation such as microwave, IR, UV
    • 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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  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Forests & Forestry (AREA)
  • Wood Science & Technology (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

The invention discloses an environment-friendly recycling method of waste arbor sawdust, which comprises the following steps: (1) preprocessing waste wood chips of arbors; (2) carbonizing; (3) preparation of solid fuel: putting 100 parts of paraffin into a jacketed kettle, heating until the paraffin is dissolved, adding 30-55 parts of carbonized wood chips, 100 parts of waste arbor wood chips, 10-24 parts of bagasse powder and 8-15 parts of coal powder, stirring at 50-68 ℃ for 10-15 min at a speed of 50-100 r/min, continuously spraying alcohol for spraying in the whole stirring process, after stirring, filling the materials into a container, sealing, filling into a mold, and performing compression molding to obtain the solid fuel. The method can avoid the problem of low durability in the early combustion of the waste wood chips of the arbor, can produce high-quality solid fuel by combining the waste wood chips with other substances, and has wide market popularization prospect.

Description

Environment-friendly recycling method for waste wood chips of arbor
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of wood chip recycling, in particular to an environment-friendly recycling method of waste arbor wood chips.
[ background of the invention ]
With the development of national economy and the increase of the number of automobiles, the problem of energy shortage is increasingly highlighted, new energy is developed, and measures for realizing diversification of energy are generally concerned by countries in the world. The solid fuel is a substitute or supplement of a conventional fuel, is a novel fuel, and is carried along with the convenience of use and other special requirements of people on the fuel, but the main raw material of the existing solid fuel is coal powder which is sourced from coal mines, and the coal powder is gradually difficult to meet the market demand along with the increasing shortage of coal mine resources. In recent years, many scientific research institutes and enterprises have started to research the production of solid fuels from waste. Zhao hong Yan and the like (formula optimization of wood chip loaded ethanol environment-friendly solid fuel block, Zhejiang ocean academy of sciences (Nature science edition), 2011, 33 (6): 545. sup. 549) research a solid fuel using wood chips loaded ethanol fuel block, which has the following defects: the method needs to add an oxidant and a catalyst, has high raw material cost and narrow application range, and is difficult to popularize on a large scale.
The waste wood chips of the trees are byproducts left after the processing of the trees, have the advantages of easy combustion, high heat value, less ash content, good combustion performance and the like, and can be used as raw materials for preparing solid fuels. But the burning process of the waste wood chips of the arbor faces: the defects of low durability and low combustion speed in the early combustion process. Therefore, the research on the solid fuel can avoid the problems in the early combustion of the waste wood chips of the trees, and the solid fuel can be combined with other substances to produce high-quality solid fuel, thereby having wide market popularization prospect.
[ summary of the invention ]
The invention aims to provide an environment-friendly recycling method of waste arbor sawdust, which comprises the steps of pretreating the waste arbor sawdust to acidify and degrade the tissue structure of the sawdust; then carbonizing the acidified powder to prepare carbonized wood dust with high heat and burning resistance; finally preparing the solid fuel. The method can avoid the problem of low durability in the early combustion of the waste wood chips of the arbor, can be combined with other substances to produce high-quality solid fuel, and has wide market popularization prospect.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: an environment-friendly recycling method of waste arbor sawdust comprises the following steps:
(1) pretreatment of waste wood chips of arbors: crushing waste arbor sawdust into powder, then placing the powder into an acidic steeping fluid, heating the acidic steeping fluid to 40-50 ℃, treating the powder for 20-30 min under the conditions that the ultrasonic treatment power is 800-1200W and the infrared irradiation power is 500-800W, taking out the powder and airing the powder to obtain acidic powder;
(2) carbonizing: mixing 100 parts by weight of acid powder and 10-22 parts by weight of silicon dioxide, molding, putting into a muffle furnace, heating to 380 ℃ at a speed of 10-20 ℃/min, keeping the temperature for 20-30 min, heating to 600 ℃ at a speed of 5-10 ℃/min, and naturally cooling to obtain carbonized wood chips;
(3) preparation of solid fuel: putting 100 parts of paraffin into a jacketed kettle, heating until the paraffin is dissolved, adding 30-55 parts of carbonized wood chips, 100 parts of waste arbor wood chips, 10-24 parts of bagasse powder and 8-15 parts of coal powder, stirring at 50-68 ℃ for 10-15 min at a speed of 50-100 r/min, continuously spraying alcohol for spraying in the whole stirring process, after stirring, filling the materials into a container, sealing, filling into a mold, and performing compression molding to obtain the solid fuel.
In the invention, as a further illustration, the bagasse powder described in step (3) is prepared by the following method: uniformly mixing 100 parts of bagasse, 10-20 parts of acetic acid solution and 5 parts of sodium alginate in parts by weight, sealing and fermenting for 10-14 hours, then putting the mixture into a high-pressure homogenizer, stirring for 15-20 minutes at the speed of 2000-5000 r/min, and performing spray drying treatment to obtain the bagasse powder.
In the present invention, as a further illustration, the process parameters of the spray drying treatment are as follows: the air inlet temperature is 170-180 ℃, and the air outlet temperature is 95-108 ℃.
In the present invention, as further illustration, the conditions of the sealed fermentation are: the temperature is 25-35 ℃ and the relative humidity is 75-85%.
In the present invention, as a further description, the acidic impregnation solution in the step (1) is prepared from the following components in a weight ratio of 10: 2-3: 100 phosphoric acid, sulfuric acid and deionized water.
In the present invention, the particle size of the powder in the step (1) is 20 to 40 μm.
The introduction of the efficacy of part of raw materials:
the silicon dioxide, used in the present invention as a carbonization process of waste chips of trees, forms a carbon-silicon structure with carbon atoms in the chips.
Paraffin, which is used as a main component for preparing the solid fuel in the present invention, is used to allow the solid fuel to be fixed and molded.
The pulverized coal, which is used as a raw material for producing the solid fuel in the present invention, is used to increase the heat energy of the solid fuel.
Bagasse, which is used in the present invention as a main raw material for producing bagasse powder.
The acetic acid solution, which is used in the present invention to acidify the bagasse, loosens the structure of the bagasse.
Sodium alginate, used in the present invention as a membrane material, serves to bind the bagasse fibers and also to facilitate fermentation.
The invention has the following beneficial effects:
1. the pretreatment method adopted by the invention can lead the organization structure of the waste wood chips of the arbor to be surrounded by the acidic substance, thereby further loosening the organization structure and being beneficial to the subsequent carbonization step. According to the method, the waste arbor sawdust is put into the acidic impregnation liquid, then the acidic impregnation liquid is driven to fully penetrate into the tissue structure of the waste arbor sawdust under the condition of ultrasonic vibration, so that the tissue structure of the waste arbor sawdust is loosened, and the brush pen is buried in the subsequent carbonization process.
2. The carbonization step adopted by the invention can carbonize the tissue structure of the acidic powder prepared by pretreatment, and is beneficial to improving the durability of the solid fuel. According to the invention, after the acid powder and the silicon dioxide are mixed with each other, the silicon dioxide can be fully dispersed in the powder of the acid powder, then the acid powder is gradually carbonized by adopting a heating step of stepped temperature rise, and the silicon dioxide and carbon atoms in waste wood chips of trees can form a carbon-silicon structure in the carbonization process, so that the durability of the carbonized wood chips is improved.
3. The preparation of the solid fuel adopted by the invention can make up for the deficiencies of the raw materials and give full play to the advantages of the raw materials. The carbonized wood chips adopted in the invention have the advantage of high durability; the adoption of the waste arbor sawdust and the bagasse powder can make up the defects that carbonized sawdust is not easy to burn and the early-stage burning speed is low; the pulverized coal can also make up the defect of low heat of the waste wood chips and the bagasse powder of the end trees. The raw materials adopted by the invention are mutually matched and promoted, so that the heat and the durability of the solid fuel are improved together.
[ detailed description ] embodiments
Example 1:
1. preparation of early stage
Preparing the bagasse powder: uniformly mixing 100 parts of bagasse, 10 parts of acetic acid solution and 5 parts of sodium alginate in parts by weight, sealing and fermenting for 10 hours at the temperature of 25 ℃ and the relative humidity of 75%, then putting the mixture into a high-pressure homogenizer, stirring for 15 minutes at the speed of 2000r/min, and carrying out spray drying treatment at the air inlet temperature of 170 ℃ and the air outlet temperature of 95 ℃ to obtain the bagasse powder.
Preparation of acidic impregnation liquid: 10 parts of phosphoric acid, 2 parts of sulfuric acid and 100 parts of deionized water are mixed according to parts by weight to obtain the acid dipping solution.
The substance prepared in the earlier stage is used for the following environment-friendly method for recovering the waste wood chips of the arbors.
2. An environment-friendly recycling method of waste arbor sawdust comprises the following steps:
(1) pretreatment of waste wood chips of arbors: crushing waste arbor sawdust into powder, then placing the powder into an acid impregnation liquid, heating to 40 ℃, treating for 20min under the conditions that the ultrasonic treatment power is 800W and the infrared irradiation power is 500W, taking out and airing to obtain acid powder with the particle size of 20 microns;
(2) carbonizing: mixing 100 parts of acid powder and 10 parts of silicon dioxide, molding, placing into a muffle furnace, heating to 380 ℃ at a speed of 10 ℃/min, keeping the temperature for 20min, heating to 600 ℃ at a speed of 5 ℃/min, and naturally cooling to obtain carbonized wood chips;
(3) preparation of solid fuel: taking 100 parts of paraffin wax, putting the paraffin wax into a jacketed kettle, heating until the paraffin wax is dissolved, adding 30 parts of carbonized sawdust, 100 parts of arbor waste sawdust, 10 parts of bagasse powder and 8 parts of coal powder, stirring at 50 ℃ for 10min, continuously spraying alcohol spray in the whole stirring process, after stirring, putting the materials into a container, sealing, then putting the container into a mold, and performing compression molding to obtain the solid fuel.
The product durability is 98.5 percent and the low-level heating value of the air drying base is 4582 kilocalories.
Example 2:
1. preparation of early stage
Preparing the bagasse powder: uniformly mixing 100 parts of bagasse, 12 parts of acetic acid solution and 5 parts of sodium alginate in parts by weight, sealing and fermenting for 11 hours at the temperature of 28 ℃ and the relative humidity of 77%, then putting the mixture into a high-pressure homogenizer, stirring for 19 minutes at the speed of 3000r/min, and carrying out spray drying treatment at the air inlet temperature of 172 ℃ and the air outlet temperature of 99 ℃ to obtain the bagasse powder.
Preparation of acidic impregnation liquid: 10 parts of phosphoric acid, 2.3 parts of sulfuric acid and 100 parts of deionized water are mixed according to parts by weight to obtain the acidic steeping liquor.
The substance prepared in the earlier stage is used for the following environment-friendly method for recovering the waste wood chips of the arbors.
2. An environment-friendly recycling method of waste arbor sawdust comprises the following steps:
(1) pretreatment of waste wood chips of arbors: crushing waste arbor sawdust into powder, then placing the powder into an acid steeping fluid, heating the powder to 44 ℃, treating the powder for 24min under the conditions that the ultrasonic treatment power is 900W and the infrared irradiation power is 600W, taking out the powder and airing the powder to obtain acid powder with the particle size of 25 mu m;
(2) carbonizing: mixing and molding 100 parts of acid powder and 15 parts of silicon dioxide according to parts by weight, then carrying out compression molding, then putting the mixture into a muffle furnace, heating to 380 ℃ at the speed of 12 ℃/min, keeping the temperature for 24min, heating to 600 ℃ at the speed of 6 ℃/min, and naturally cooling to obtain carbonized wood chips;
(3) preparation of solid fuel: taking 100 parts of paraffin wax, putting the paraffin wax into a jacketed kettle, heating until the paraffin wax is dissolved, adding 40 parts of carbonized wood chips, 100 parts of arbor waste wood chips, 13 parts of bagasse powder and 10 parts of coal powder, stirring at 55 ℃ for 11min at a speed of 70r/min, continuously spraying alcohol spray in the whole stirring process, after stirring, putting the materials into a container, sealing, then putting the container into a mold, and performing compression molding to obtain the solid fuel.
The product durability is 98.3 percent and the low-position heat productivity of the air drying base is 4369 kilocalories.
Example 3:
1. preparation of early stage
Preparing the bagasse powder: uniformly mixing 100 parts of bagasse, 16 parts of acetic acid solution and 5 parts of sodium alginate in parts by weight, sealing and fermenting for 12 hours at the temperature of 30 ℃ and the relative humidity of 79%, then placing the mixture into a high-pressure homogenizer, stirring for 17 minutes at the speed of 4000r/min, and performing spray drying treatment at the air inlet temperature of 176 ℃ and the air outlet temperature of 100 ℃ to obtain the bagasse powder.
Preparation of acidic impregnation liquid: 10 parts of phosphoric acid, 2.5 parts of sulfuric acid and 100 parts of deionized water are mixed according to parts by weight to obtain the acidic steeping liquor.
The substance prepared in the earlier stage is used for the following environment-friendly method for recovering the waste wood chips of the arbors.
2. An environment-friendly recycling method of waste arbor sawdust comprises the following steps:
(1) pretreatment of waste wood chips of arbors: crushing waste arbor sawdust into powder, then placing the powder into an acid steeping fluid, heating the powder to 47 ℃, treating the powder for 24min under the conditions that the ultrasonic treatment power is 1000W and the infrared irradiation power is 600W, taking out the powder and airing the powder to obtain acid powder with the particle size of 30 mu m;
(2) carbonizing: mixing and molding 100 parts of acid powder and 17 parts of silicon dioxide according to parts by weight, then carrying out compression molding, then putting the mixture into a muffle furnace, heating to 380 ℃ at a speed of 16 ℃/min, keeping the temperature for 24min, heating to 600 ℃ at a speed of 9 ℃/min, and naturally cooling to obtain carbonized wood chips;
(3) preparation of solid fuel: taking 100 parts of paraffin wax, putting the paraffin wax into a jacketed kettle, heating until the paraffin wax is dissolved, adding 45 parts of carbonized sawdust, 100 parts of arbor waste sawdust, 20 parts of bagasse powder and 9 parts of coal powder, stirring at the temperature of 60 ℃ for 13min at the speed of 80r/min, continuously spraying alcohol spray in the whole stirring process, after the stirring is finished, putting the materials into a container, sealing, then putting the materials into a mold, and performing compression molding to obtain the solid fuel.
The product durability is 97.9 percent and the low-level heating value of the air drying base is 4355 kilocalories.
Example 4:
1. preparation of early stage
Preparing the bagasse powder: uniformly mixing 100 parts of bagasse, 18 parts of acetic acid solution and 5 parts of sodium alginate in parts by weight, sealing and fermenting for 12 hours at the temperature of 32 ℃ and the relative humidity of 80%, then putting the mixture into a high-pressure homogenizer, stirring for 16 minutes at the speed of 4000r/min, and carrying out spray drying treatment at the air inlet temperature of 174 ℃ and the air outlet temperature of 105 ℃ to obtain the bagasse powder.
Preparation of acidic impregnation liquid: 10 parts of phosphoric acid, 2.8 parts of sulfuric acid and 100 parts of deionized water are mixed according to parts by weight to obtain the acidic steeping liquor.
The substance prepared in the earlier stage is used for the following environment-friendly method for recovering the waste wood chips of the arbors.
2. An environment-friendly recycling method of waste arbor sawdust comprises the following steps:
(1) pretreatment of waste wood chips of arbors: crushing waste arbor sawdust into powder, then placing the powder into an acid steeping fluid, heating the powder to 47 ℃, treating the powder for 24min under the conditions that the ultrasonic treatment power is 900W and the infrared irradiation power is 650W, taking out the powder and airing the powder to obtain acid powder with the particle size of 30 mu m;
(2) carbonizing: mixing and molding 100 parts of acid powder and 17 parts of silicon dioxide according to parts by weight, then carrying out compression molding, then putting the mixture into a muffle furnace, heating to 380 ℃ at a speed of 13 ℃/min, keeping the temperature for 25min, heating to 600 ℃ at a speed of 7 ℃/min, and naturally cooling to obtain carbonized wood chips;
(3) preparation of solid fuel: taking 100 parts of paraffin wax, putting the paraffin wax into a jacketed kettle, heating until the paraffin wax is dissolved, adding 50 parts of carbonized wood chips, 100 parts of arbor waste wood chips, 18 parts of bagasse powder and 12 parts of coal powder, stirring at 63 ℃ for 11min at a speed of 90r/min, continuously spraying alcohol spray in the whole stirring process, after the stirring is finished, putting the materials into a container, sealing, then putting the materials into a mold, and performing compression molding to obtain the solid fuel.
The product durability is 98.2 percent and the low-level heating value of the air drying base is 4401 kilocalories.
Example 5:
1. preparation of early stage
Preparing the bagasse powder: uniformly mixing 100 parts of bagasse, 19 parts of acetic acid solution and 5 parts of sodium alginate in parts by weight, sealing and fermenting for 12 hours at the temperature of 33 ℃ and the relative humidity of 80%, then putting the mixture into a high-pressure homogenizer, stirring for 16 minutes at the speed of 4500r/min, and performing spray drying treatment at the air inlet temperature of 176 ℃ and the air outlet temperature of 102 ℃ to obtain the bagasse powder.
Preparation of acidic impregnation liquid: 10 parts of phosphoric acid, 2.2 parts of sulfuric acid and 100 parts of deionized water are mixed according to parts by weight to obtain the acidic steeping liquor.
The substance prepared in the earlier stage is used for the following environment-friendly method for recovering the waste wood chips of the arbors.
2. An environment-friendly recycling method of waste arbor sawdust comprises the following steps:
(1) pretreatment of waste wood chips of arbors: crushing waste wood chips of arbor into powder, then placing the powder into an acid steeping fluid, heating to 46 ℃, treating for 25min under the conditions that the ultrasonic treatment power is 1100W and the infrared irradiation power is 700W, taking out and airing to obtain acid powder with the particle size of 25 mu m;
(2) carbonizing: mixing and molding 100 parts of acid powder and 20 parts of silicon dioxide according to parts by weight, then carrying out compression molding, then putting the mixture into a muffle furnace, heating to 380 ℃ at the speed of 12 ℃/min, keeping the temperature for 27min, heating to 600 ℃ at the speed of 8 ℃/min, and naturally cooling to obtain carbonized wood chips;
(3) preparation of solid fuel: taking 100 parts of paraffin wax, putting the paraffin wax into a jacketed kettle, heating until the paraffin wax is dissolved, adding 50 parts of carbonized wood chips, 100 parts of arbor waste wood chips, 22 parts of bagasse powder and 14 parts of coal powder, stirring at the temperature of 65 ℃ for 14min at the speed of 80r/min, continuously spraying alcohol spray in the whole stirring process, after stirring, putting the materials into a container, sealing, then putting the materials into a mold, and performing compression molding to obtain the solid fuel.
The product durability is 97.9 percent and the low-position heating value of the air drying base is 4299 kilocalories.
Example 6:
1. preparation of early stage
Preparing the bagasse powder: uniformly mixing 100 parts of bagasse, 20 parts of acetic acid solution and 5 parts of sodium alginate in parts by weight, sealing and fermenting for 14 hours at the temperature of 35 ℃ and the relative humidity of 85%, then putting the mixture into a high-pressure homogenizer, stirring for 20 minutes at the speed of 5000r/min, and carrying out spray drying treatment at the air inlet temperature of 180 ℃ and the air outlet temperature of 108 ℃ to obtain the bagasse powder.
Preparation of acidic impregnation liquid: 10 parts of phosphoric acid, 3 parts of sulfuric acid and 100 parts of deionized water are mixed according to parts by weight to obtain the acid dipping solution.
The substance prepared in the earlier stage is used for the following environment-friendly method for recovering the waste wood chips of the arbors.
2. An environment-friendly recycling method of waste arbor sawdust comprises the following steps:
(1) pretreatment of waste wood chips of arbors: crushing waste arbor sawdust into powder, then placing the powder into an acid steeping fluid, heating to 50 ℃, treating for 30min under the conditions that the ultrasonic treatment power is 1200W and the infrared irradiation power is 800W, taking out and airing to obtain acid powder with the particle size of 40 mu m;
(2) carbonizing: mixing and molding 100 parts of acid powder and 22 parts of silicon dioxide according to parts by weight, then carrying out compression molding, then putting the mixture into a muffle furnace, heating to 380 ℃ at a speed of 20 ℃/min, keeping the temperature for 30min, heating to 600 ℃ at a speed of 10 ℃/min, and naturally cooling to obtain carbonized wood chips;
(3) preparation of solid fuel: taking 100 parts of paraffin wax, putting the paraffin wax into a jacketed kettle, heating until the paraffin wax is dissolved, adding 55 parts of carbonized wood chips, 100 parts of arbor waste wood chips, 24 parts of bagasse powder and 15 parts of coal powder, stirring for 15min at 68 ℃ at a speed of 100r/min, continuously spraying alcohol spray in the whole stirring process, after stirring, putting the materials into a container, sealing, then putting the container into a mold, and performing compression molding to obtain the solid fuel.
The product durability is 98.1 percent and the low-position heat productivity of the air drying base is 4375 kilocalories.
The above description is intended to describe in detail the preferred embodiments of the present invention, but the embodiments are not intended to limit the scope of the claims of the present invention, and all equivalent changes and modifications made within the technical spirit of the present invention should fall within the scope of the claims of the present invention.

Claims (6)

1. An environment-friendly recycling method of waste arbor sawdust is characterized in that: the method comprises the following steps:
(1) pretreatment of waste wood chips of arbors: crushing waste arbor sawdust into powder, then placing the powder into an acidic steeping fluid, heating the acidic steeping fluid to 40-50 ℃, treating the powder for 20-30 min under the conditions that the ultrasonic treatment power is 800-1200W and the infrared irradiation power is 500-800W, taking out the powder and airing the powder to obtain acidic powder;
(2) carbonizing: mixing 100 parts by weight of acid powder and 10-22 parts by weight of silicon dioxide, molding, putting into a muffle furnace, heating to 380 ℃ at a speed of 10-20 ℃/min, keeping the temperature for 20-30 min, heating to 600 ℃ at a speed of 5-10 ℃/min, and naturally cooling to obtain carbonized wood chips;
(3) preparation of solid fuel: putting 100 parts of paraffin into a jacketed kettle, heating until the paraffin is dissolved, adding 30-55 parts of carbonized wood chips, 100 parts of waste arbor wood chips, 10-24 parts of bagasse powder and 8-15 parts of coal powder, stirring at 50-68 ℃ for 10-15 min at a speed of 50-100 r/min, continuously spraying alcohol for spraying in the whole stirring process, after stirring, filling the materials into a container, sealing, filling into a mold, and performing compression molding to obtain the solid fuel.
2. The environment-friendly recycling method of the waste wood chips of arbors as claimed in claim 1, is characterized in that: the bagasse powder in the step (3) is prepared by the following method: uniformly mixing 100 parts of bagasse, 10-20 parts of acetic acid solution and 5 parts of sodium alginate in parts by weight, sealing and fermenting for 10-14 hours, then putting the mixture into a high-pressure homogenizer, stirring for 15-20 minutes at the speed of 2000-5000 r/min, and performing spray drying treatment to obtain the bagasse powder.
3. The environment-friendly recycling method of the waste wood chips of arbors as claimed in claim 2, characterized in that: the technological parameters of the spray drying treatment are as follows: the air inlet temperature is 170-180 ℃, and the air outlet temperature is 95-108 ℃.
4. The environment-friendly recycling method of the waste wood chips of arbors as claimed in claim 2, characterized in that: the conditions of the sealed fermentation are as follows: the temperature is 25-35 ℃ and the relative humidity is 75-85%.
5. The environment-friendly recycling method of the waste wood chips of arbors as claimed in claim 1, is characterized in that: the acidic impregnation liquid in the step (1) is prepared from the following components in parts by weight: 2-3: 100 phosphoric acid, sulfuric acid and deionized water.
6. The environment-friendly recycling method of the waste wood chips of arbors as claimed in claim 1, is characterized in that: the particle size of the powder in the step (1) is 20-40 μm.
CN201810138160.0A 2018-02-10 2018-02-10 Environment-friendly recycling method for waste wood chips of arbor Active CN108192682B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1018519A (en) * 1963-10-15 1966-01-26 Rosemary Clare Hoare Improvements in or relating to fuels
CN1232805A (en) * 1999-05-28 1999-10-27 清华大学 Preparation of silicon nitride-based composite material with superhigh tenacity
CN104073314A (en) * 2013-03-28 2014-10-01 孙亮 Solid fuel production method
CN105001932A (en) * 2015-07-01 2015-10-28 徐州市宇鑫环保建材有限公司 Solid fuel prepared from coal gangue and preparation technology thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1018519A (en) * 1963-10-15 1966-01-26 Rosemary Clare Hoare Improvements in or relating to fuels
CN1232805A (en) * 1999-05-28 1999-10-27 清华大学 Preparation of silicon nitride-based composite material with superhigh tenacity
CN104073314A (en) * 2013-03-28 2014-10-01 孙亮 Solid fuel production method
CN105001932A (en) * 2015-07-01 2015-10-28 徐州市宇鑫环保建材有限公司 Solid fuel prepared from coal gangue and preparation technology thereof

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