KR101845922B1 - Method for manufacturing wooden pallet - Google Patents

Method for manufacturing wooden pallet Download PDF

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KR101845922B1
KR101845922B1 KR1020160095341A KR20160095341A KR101845922B1 KR 101845922 B1 KR101845922 B1 KR 101845922B1 KR 1020160095341 A KR1020160095341 A KR 1020160095341A KR 20160095341 A KR20160095341 A KR 20160095341A KR 101845922 B1 KR101845922 B1 KR 101845922B1
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South Korea
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sawdust
pellets
wood
resin
manufacturing
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KR1020160095341A
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Korean (ko)
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KR20180012475A (en
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안종현
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제이에이인터내셔날 (주)
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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
    • 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
    • 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
    • C10L5/34—Other details of the shaped fuels, e.g. briquettes
    • C10L5/36—Shape
    • C10L5/363—Pellets or granulates
    • 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
    • C10L5/406—Solid fuels essentially based on materials of non-mineral origin on plastic
    • 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
    • C10L2290/06—Heat exchange, direct or indirect
    • 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
    • C10L2290/28—Cutting, disintegrating, shredding or grinding
    • 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
    • C10L2290/52—Hoppers
    • 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)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Ecology (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Engineering & Computer Science (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)

Abstract

The present invention relates to a method for producing wood pellets for fuel containing sawdust and a vinyl resin, comprising the steps of collecting wood or waste wood to produce sawdust by crushing the wood collected through the sawdust manufacturing machine, A first step of preparing a raw material for producing wood pellets; A second step of removing the dust contained in the dried sawdust, the sawdust being crushed or pulverized through the sawdust manufacturing apparatus being loaded on the sawdust storage hopper, the loaded sawdust being transferred to the drying apparatus to be dried, A third step of transferring the sawdust from which the dust has been removed to the grinding apparatus to maintain the intimacy required for manufacturing the pellet, and to carry out the milling process; Mixed in a milling process the sawdust 93 ~ 98% by weight of the pulverized synthetic plastic resin 2 to the pellets produced 7% by weight of the device and extruded in the 750 to 1000kg / cm 2 pressure and a small cylindrical shape steamed to a temperature 800 ℃ through the steam unit A fourth step of discharging the molded pellets through the discharge port; And a fifth step of transferring the pellets formed and discharged in the fourth step to a cooling device through a cooling beeeer, naturally drying the pellets using a blower, and cutting the pellets to a predetermined size. Accordingly, the present invention can contribute to overcoming the shortage of domestic resources and stably supplying environment-friendly energy as the demand for economical forest biomass energy is increased.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a method for manufacturing wood pellets for fuel containing sawdust and vinyl resin,

The present invention relates to a method for producing wood pellets for fuel containing sawdust and vinyl resin, and more particularly to a method for producing wood pellets by pulverizing various kinds of biomass such as wood, tree branches and reeds into sawdust form and by using polylactic acid (PLA) Wood for fuel containing sawdust and vinyl resin formed by mixing with an environmentally-friendly vinyl resin such as polycarbonate resin, acrylonitrile-butadiene-styrene copolymer resin (ABS) and polyethylene terephthalate (PET) To a pellet manufacturing method.

Petroleum and other fossil fuels are cited as the main cause of global warming, and their price is relatively high, so their effect on the economy is great and their reserves are gradually decreasing and will be exhausted sometime in the future. Therefore, development of alternative energy sources is urgent.

In order to solve the environmental pollution problem and the concern about environment-friendly energy, it is required to develop energy sources such as renewable energy that can replace fossil fuels.

As is well known, fossil fuels such as petroleum are getting depleted, and the use of fossil fuels is also cited as a major cause of global warming.

Each of our homes, offices, and industrial sites emit an enormous amount of 320,000 tons of waste a day. 83.5% of them are recycled and recycled through separate collection, and some are disposed of as incineration (5.4%), landfill (8.0%) or marine discharge (3.0%).

However, there is a good energy source in the envelope that collects the final garbage after collecting garbage at each home and industrial site. Waste Solid Fuel (RDF) projects are considered to be worthless, so they extract combustible materials from landfills and make refuse-derived fuel (RDF).

Thanks to the 'waste disposal system' implemented since 1995, the consciousness of the Korean people to discharge garbage is the world's highest consciousness. However, it is still impossible to completely separate 100% of the garbage. As a result, various kinds of materials such as paper, film, plastic, small wood, rubber, etc., and food waste containing moisture are available in various types of envelopes, which can be recycled as small metal items and cans. It is packed.

In this way, separating / screening combustible materials that can be energized in an envelope containing various substances is the first step in creating solid fuel. In this process, PVC (vinyl chloride resin), which is responsible for the emission of carcinogens such as dioxin, non-combustible materials such as water and unburnable iron / cans are treated separately.

On the other hand, when separating selected combustible wastes into solid fuel (RDF) with high value as a fuel, it is divided into a pellet type RDF in a molding form and a flexible type RDF in an unformed form. When a solid fuel is used, A much higher and even calorific value can be obtained than when simply incinerating the mixed waste.

RDF is made up of high-calorific waste, which can be used in a variety of applications such as private power plants, industrial boilers, cement kilns, and coal-fired power plants.

In addition, they are sold to district heating companies and supplied to the heating heat of general households. RDF extracted from wastes not only helps to alleviate the burden of importing crude oil into the ceiling, but also reduces soil pollution and air pollution caused by landfill and simple incineration, It lowers various social costs. In addition, it can replace fossil fuels that cause greenhouse effect, and plays a major role in improving the environmental quality.

However, by using combustible waste, it is possible to obtain a high calorific value when using solid fuel (RDF). However, it is possible to reduce the secondary environmental pollution and air pollution through the emission of dioxin and other carcinogenic substances It is a reality that a problem is emerging.

Meanwhile, Korea is an energy consuming country that rely on imports for about 95% of its energy demand. It uses about 25% of its total imports for energy imports. In the future, it will develop and supply alternative energy for depletion of fossil energy and global warming. There is a growing need.

Solar energy, wind power, hydro power, and nuclear power are the alternative energy, but biomass fuel is also recognized as an important alternative energy. Particularly, woody biomass pellets are analyzed to have a reduction effect of NOx and SO 2 emission by about ½ of that of petroleum combustion in burning, which is attracting attention as a useful means of responding to climate change and reducing greenhouse gas emissions.

The amount of woody by-products that can be generated as a result of deforestation or tree renewal in Korea is 7,040,000 ㎥ per year, which is actually only 3.17 million ㎥. In the case of by-products that are thrown away after logging, the annual amount exceeds 1 million ㎥.

The accumulation of wood byproducts in the forests is also a significant risk and damage. By-products of forests increase the risk of forest fires and encroach on the trees, so it is necessary to dispose them properly.

Given the current economic downturn in the world economy due to high oil prices, the development of alternative energy sources is more urgent. An example of the development of such an energy source is wood resources.

In this respect, there is a need for a method for recycling wood byproducts, and it would be advantageous if wood byproducts could be made from fuel pellets and supplied to industry or general households.

There are wood chips, wood pellets, wood brackets and charcoal as a solid fuel, bio oil or bioethanol as a liquid fuel, and synthetic gas as a gaseous fuel.

Wood is attracting attention as an energy source. Conventionally, wood and sawdust generated in the production of wood products such as furniture have not been used as energy resources but mainly incinerated. Recently, however, techniques for producing aged fuel using sawdust, in particular, technology of pelletized energy source The wood pellet molding machine is a device for molding wood pellets for pulverizing various kinds of biomass such as wood, tree branches, reeds and the like into sawdust to be used as fuel for the pellet boiler.

Most of the techniques related to the conventional wood pellet forming apparatus are manufactured by processing wood into sawdust, drying it, crushing it, molding it into pellets, and then packaging and commercializing it.

Particularly, woody pellets are manufactured through a process of uniformly crushing sawdust, woody and waste wood, compressing them, and molding them into pellets. However, the production of woody pellets using discarded leaves or leaves has not been made so far.

Accordingly, the present invention proposes a pellet manufacturing method which comprises sawdust and a vinyl resin, and which can be easily stored for a long time without being easily pulverized.

[Patent Literature]

1. Method for manufacturing wood pellets and apparatus for manufacturing wooden pallets (Patent Registration No. 10-0878051)

2. APPARATUS FOR MANUFACTURING WOODEN PALLET AND METHOD THEREOF (Patent Application No. 10-2009-0030808)

3. Producing method for wood pellet (Patent Registration No. 10-1165710)

4. Apparatus for manufacturing a wood pellet (Patent Registration No. 10-1277308)

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to provide a method for producing a wood pulp by pulverizing various kinds of biomass such as wood, The present invention is to provide a method for producing wood pellets for fuel containing sawdust and vinyl resin formed by mixing with an environmentally friendly vinyl resin such as resin (ABS) and polyethylene terephthalate (PET)

Further, the present invention can prevent the wood pellet from being easily broken firstly by maintaining the intimacy of the sawdust through the milling procedure, and it can be combined with the synthetic vinyl resin to produce the wood pellets through extrusion, The present invention is to provide a method for manufacturing wood pellets for fuel containing sawdust and vinyl resin which can maintain the moisture content and intimacy and thereby prevent the wood pellet from breaking and spreading upon absorption into water.

However, the objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

In order to accomplish the above object, there is provided a method for manufacturing a wood pellet for fuel containing sawdust and a vinyl resin according to an embodiment of the present invention, comprising the steps of collecting wood or waste wood to produce sawdust by crushing the wood collected through the saw- A first step of crushing synthetic vinyl resin to prepare a raw material for producing wood pellets; A second step of removing the dust contained in the dried sawdust, the sawdust being crushed or pulverized through the sawdust manufacturing apparatus being loaded on the sawdust storage hopper, the loaded sawdust being transferred to the drying apparatus to be dried, A third step of transferring the sawdust from which the dust has been removed to the grinding apparatus to maintain the intimacy required for manufacturing the pellet, and to carry out the milling process; 93 to 98% by weight of the milled sawdust and 2 to 7% by weight of the pulverized synthetic resin were mixed in a pelletizer and extruded at a pressure of 750 to 1000 kg / cm < 2 > A fourth step of discharging the molded pellets through a discharge port of a small cylindrical shape; And a fifth step of transferring the pellets formed and discharged in the fourth step to a cooling device through a cooling beeeer, naturally drying the pellets using a blower, and cutting the pellets to a predetermined size.

At this time, in the method for producing wood pellets for fuel containing sawdust and vinyl resin, the synthetic vinyl resin may be a polylactic acid (PLA) resin, a polycarbonate resin, an acrylonitrile-butadiene-styrene copolymer resin (ABS) And terephthalate (PET) resin are selectively used in combination.

Further, in the method for producing wood pellets for fuel containing sawdust and vinyl resin according to the present invention, the sawdust and the synthetic vinyl resin to be mixed into the pellet producing apparatus in the fourth step include 97 wt% of sawdust, 3 wt% . ≪ / RTI >

In addition, the method for producing wood pellets for fuel containing sawdust and vinyl resin according to the present invention can prevent the sawdust from being easily broken primarily through the milling process and can be combined with the synthetic vinyl resin, The moisture content and the intimacy of the wood pellets are maintained through the natural cooling procedure, thereby preventing the wood pellet from being broken and spreading upon absorption into water.

A method for producing wood pellets for fuel containing sawdust and vinyl resin according to an embodiment of the present invention comprises pulverizing various kinds of biomass such as wood, tree branches, reeds, etc. into sawdust form and mixing them with polylactic acid (PLA) resin, polycarbonate resin, (ABS), and polyethylene terephthalate (PET), and is naturally cooled by steaming with high temperature heat, so that the wood pellets formed during squeezing and squeezing through the vinyl resin are broken It is possible to prevent spreading phenomenon when water is absorbed.

In addition, the method of manufacturing wood pellets for fuel containing sawdust and vinyl resin according to an embodiment of the present invention prevents spreading due to crumbling or water absorption, thereby improving stability, homogeneity, ease of use, It is easy to transport / store, and as green, environmentally friendly fuel, it can provide alternative renewable energy source for energy saving without emission of greenhouse gas.

In the method of manufacturing wood pellets for fuel containing sawdust and vinyl resin according to the present invention, the intimacy of sawdust is maintained through the milling process, so that the wood pellet can be prevented from being easily broken first, It is combined with synthetic vinyl resin to maintain the moisture content and intimacy of the wood pellet through extrusion, steam and natural cooling procedures, thereby preventing the wood pellet from being broken and spreading when absorbed into water, thereby providing excellent wood pellets.

In addition, according to the present invention, the method of producing wood pellets for fuel containing sawdust and vinyl resin according to the embodiment of the present invention can contribute to the overcoming of insufficient domestic resources and stable supply of environmentally friendly energy as the demand for economical forest biomass energy increases. .

1 is a schematic view of a method for producing a wood pellet for fuel containing sawdust and a vinyl resin according to the present invention.
2 is a flowchart of a method for producing a wood pellet for fuel containing sawdust and a vinyl resin according to the present invention
Fig. 3 is a state diagram of wood pellets for fuel containing sawdust and vinyl resin produced according to Fig. 1
Fig. 4 is a table showing evaluation criteria of wood pellets for fuel
5 shows test results of wood pellets for fuel containing sawdust and vinyl resin in the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a detailed description of preferred embodiments of the present invention will be given with reference to the accompanying drawings. In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

Generally, the pellet means a compressed form of a small cylindrical shape. In particular, wood pellets are produced using a piece of surplus wood produced by processing wood by-products or wood. In addition, the pellet form is widely used not only for the wood pellets used as fuel, but also for the production of pelleted animal feeds, because of its easy storage and transportability.

Unlike petroleum resources, wood pellets are constantly generated during the afforestation process and have excellent circulation, while the amount of pollutants generated is relatively low compared to fossil fuels. Until recently, wood pellets have been used in ordinary households in rural areas and cities. Recently, they are excellent fuels that are widely used for heating and ambience production in pensions and villas. Especially in rural areas, it has the advantage of reducing the energy cost burden when growing winter crops, and it is one of the highly utilized alternative energy such as supporting the installation cost in local governments.

Accordingly, the wood pellet for fuel according to the present invention can be obtained by pulverizing various kinds of biomass such as wood, twig, reed and the like into sawdust form and pulverizing it with polylactic acid (PLA) resin, polycarbonate resin, acrylonitrile-butadiene- ABS, and polyethylene terephthalate (PET), which is formed by naturally cooling with steam at a high temperature, and a vinyl resin-containing wood pellet.

The Looking at the features of environment-friendly plastic resin used in the present invention, first, a polylactic acid (PLA) resin is prepared as a typical resin of a carbon-neutral (carbon neutral) material from a biomass raw material of the plant, CO 2 by incineration or biodegradation process the baechulhae also that carbon is characterized not to increase the CO 2 concentration in the atmosphere because it is a raw material is introduced into a plant by photosynthesis, the CO 2 in the atmosphere.

The polycarbonate resin is a thermoplastic resin produced by reacting bisphenol A with phosgene or the like and is transparent since it is amorphous. It has high mechanical strength, excellent heat resistance and electrical insulation, and impact strength is the highest among thermoplastic resins. In addition, it is an engineering plastic that is resistant to environmental changes because it has various characteristics that have a very small dimensional change due to moisture absorption and stable physical properties with temperature change. It is used as an electrical and electronic field such as VTR and OA equipment, And medical fields such as artificial organs. Transparency, heat resistance and dimensional stability.

The acrylonitrile-butadiene-styrene copolymer resin is an impact resistant resin composed of three components of acrylonitrile butadiene and styrene. These three components are referred to as ABS resin after the acronym stands for styrene-acrylonitrile copolymer There are two kinds of graft type which are obtained by graft copolymerization of styrene and acrylonitrile under the coexistence of a blend type by NBR with a polymer blend and a BR or SBR latex. Most of current ABS resins are called graft type, Natural color is usually opaque in the form of salt yellow. Now transparent varieties are also available. The characteristics of ABS resin are that they have excellent tensile strength, stiffness and heat resistance together with excellent impact strength over a wide temperature range. In addition, all molding methods such as injection molding, extrusion blow molding and calender processing are applied and molding shrinkage is small due to excellent electrical properties, oil resistance, chemical resistance and stain resistance, and molded products have beautiful gloss, excellent dimensional stability, creep resistance, It is also easy to secondary processing such as metal plating, etc., and has balanced physical properties and processability.

ABS resin is mainly used in various parts such as fire-extinguishing electric appliances, cabinet housings, and other general appliance housings, automobile interior and exterior parts, toys, miscellaneous goods, and PVC.

In addition, polyethylene terephthalate (PET) is a saturated polyester obtainable by polycondensation of terephthalic acid and ethylene glycol. Polyethylene terephthalate has a structure in which molecular chain is shorter than polybutylene terephthalate and does not bend well. Therefore, rigidity and heat resistance are good, but it is necessary to set to 110 ° C or more in order to accelerate the crystallization speed. Otherwise, carboxylic acid sodium salt or potassium salt may be added at 100 DEG C or lower, and aliphatic organic ester or the like may be added as a plasticizer to promote crystallization.

Unreinforced PET is mainly used as glass fiber reinforced materials because of problems in moldability, impact resistance, and heat resistance. Recently, however, consumption of unreinforced PET is rapidly increasing due to the development of stretching inhalation technology. Since PET is different from PBT and therefore crystallization is difficult as it is, there is no natural grade as a molding material. Though the glass content is 30% as a basis, some of them have a higher rigidity and a lower shrinkage. There is also an inorganic combination grade such as mica for minimizing the difference in physical properties due to the low bending and the direction of flow of the polymer.

PET has the highest heat resistance among the thermoplastic resins, has excellent fatigue strength, excellent electrical properties, low temperature and humidity effects, high resistance to organic solvent and oil, low water absorption, excellent dimensional stability , And is free from stress cracks. It is used for household items, toys, electric insulators, radio and TV cases, and packaging materials, and occupies the majority of plastic beverage bottles.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements, and wherein: FIG. 1 is a perspective view of a method of manufacturing wood pellets for fuel containing sawdust and vinyl resin, It is a schematic diagram of wood pellet manufacturing decoration.

As shown in the figure, the process for producing the wood pellets for fuel containing sawdust and vinyl resin according to the present invention comprises the steps of crushing and crushing logs of A, the sawdust drying process of B, the sawdust dust removal process of C, the milling process of D, E mixing of raw materials, compression and steam processes, cooling and packaging of produced wood pellets.

In the logwood crushing and crushing process of A, wood and wood for producing wood pellets are crushed or crushed, and crushed and crushed sawdust is transferred to a drying device through a transfer device.

Thereafter, the dust is removed from the dried sawdust through the dust removing process device of C, and the sludge is sieved by a predetermined size or more to select only the homogeneous sawdust.

The sawdust selected by the above procedure is transferred to a milling machine to perform a milling process so as to have a predetermined density. The homogeneous sawdust and the environmentally friendly vinyl resin are mixed and compressed, and the steam is heated to a high temperature.

The wood pellets produced through the compression and steam process are transferred onto a conveyor, naturally cooled by a blower, cut into wood pellets of a predetermined size, and finished, thereby completing the wood pellet production process.

2 is a flow chart showing a process for producing a wood pellet for fuel containing sawdust and a vinyl resin according to the present invention. The detailed process will be described with reference to FIGS. 1 and 2 attached hereto. Hereinafter, the mechanical devices used in the respective processes are applied to the production of pellets.

First, the logwood crushing and crushing process is a process of preparing a raw material for producing wood pellets. The wood or the waste wood is collected and the wood collected through the sawdust manufacturing device is crushed to produce sawdust (step S100). The manufactured sawdust is piled on the floor of the factory and such sawdust may be used. The wood from which such sawdust is produced includes those collected in a variety of ways, including, for example, chopped bees as well as trees harvested by thinning.

In the present invention, the wood pellets are prepared by mixing vinyl resin and sawdust to form pellets. The wood pellets are prepared by pulverizing a vinyl resin to a predetermined size (step S150)

At this time, the vinyl resin to be used is an environmentally friendly vinyl resin which is selectively mixed with a polylactic acid (PLA) resin, a polycarbonate resin, an acrylonitrile-butadiene-styrene copolymer resin (ABS), and a polyethylene terephthalate Or a specific resin may be used in a limited manner. The vinyl resin mixed in the wood pellets of the present invention is used in an amount of about 3% by weight of the total weight, and the sawdust can be prevented from being broken by the sawdust when pierced with the sawdust through the vinyl resin, or spreading when water is absorbed.

The crushed or pulverized sawdust is loaded into the sawdust storage hopper through the sawing machine of the above procedure, and the loaded sawdust is conveyed to the drying apparatus through the sawdust conveying conveyor and dried (Step S200). Then, dust is removed through the conveying conveyor And the dust contained in the dried sawdust is removed (step S300).

The sawdust, from which the dust is removed through the dust removing device, is transferred to a grinding apparatus to maintain the intimacy required for manufacturing the pellet, and the milling process is performed (step S400).

Through the milling process, the sawdust can be prevented from being easily broken firstly, and the secondary crushing phenomenon combined with the synthetic vinyl resin is complemented, and the compacted, steamed, and cooled processes, , And intimacy is maintained.

Thereafter, the milled sawdust and the pulverized synthetic vinyl resin are mixed together in the hopper in the pelletizer (step S500), and the pellet is extruded through a discharge port by steaming at 800 ° C with a steam device (Step S600)

The amount of the sawdust and the synthetic vinyl resin mixed in the hopper of the pelletizer may be 93 to 98% by weight of the sawdust and 2 to 7% by weight of the synthetic vinyl resin, By weight, and the synthetic vinyl resin is 3% by weight.

The blended sawdust and the synthetic vinyl resin are extruded at a pressure of 750 to 1000 kg / cm 2 using the pelletizer and steamed at a temperature of 800 ° C through a steam system to form wood pellets in a small cylindrical shape. The size or weight of the wood pellets can be adjusted.

The pellets produced in the pelletizer are transferred to a cooling unit through a cooling canister, wherein the series of produced wood pellets transferred to the cooling unit is naturally dried using a blower (step S700). The dried pellets Is cut to a predetermined size and packed through a packing device to produce wood pellets.

On the other hand, the moisture pellet naturally dried with the blower in the cooling device maintains the moisture content and intimacy, and thus the generated wood pellet is crushed and spread in water is maintained.

The formed wood pellets containing the formed sawdust and the vinyl resin produced by the above procedure are produced as shown in FIG. 3, and the size and length of the wood pellets can be varied depending on the use of the pellets.

Figure 4 shows the evaluation criteria of wood pellets for fuel. Wood pellets for fuel containing sawdust and vinyl resin produced in accordance with the present invention are shown in the test report shown in Figure 5 Durability, water content and calorific value are met, and it can be confirmed that it meets the environmental standard for sulfur, chlorine, nitrogen and inorganic metals in particular.

As described above, preferred embodiments of the present invention have been disclosed in the present specification and drawings, and although specific terms have been used, they have been used only in a general sense to easily describe the technical contents of the present invention and to facilitate understanding of the invention , And are not intended to limit the scope of the present invention. It is to be understood by those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

Claims (4)

(EN) Disclosed is a method for producing sawdust, comprising the steps of collecting wood or waste wood to disintegrate the wood collected through a sawdust manufacturing machine to produce sawdust, and adding a polylactic acid (PLA) resin, a polycarbonate resin, an acrylonitrile - butadiene - styrene copolymer resin (ABS), a polyethylene terephthalate A first step of preparing a raw material for producing wood pellets by crushing a synthetic vinyl resin selectively mixed with one or more of PET resin;
A second step of removing the dust contained in the dried sawdust, the sawdust being crushed or pulverized through the sawdust manufacturing apparatus being loaded on the sawdust storage hopper, the loaded sawdust being transferred to the drying apparatus to be dried,
A third step of transferring the sawdust from which the dust has been removed to the grinding apparatus to maintain the intimacy required for manufacturing the pellet, and to carry out the milling process;
97% by weight of sawdust milled through the third step and 3% by weight of pulverized synthetic resin were mixed in a pelletizer, extruded at a pressure of 750 to 1000 kg / cm 2 , steamed at a temperature of 800 ° C through a steam device, A fourth step of discharging the molded pellets through the discharge port of the shape; And
And a fifth step of transferring the pellets formed and discharged in the fourth step to a cooling device through a cooling beaker and naturally drying the pellets using a blower and cutting the pellets to a predetermined size. By weight based on the total weight of the wood pellets. delete delete delete
KR1020160095341A 2016-07-27 2016-07-27 Method for manufacturing wooden pallet KR101845922B1 (en)

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Cited By (2)

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KR20230037772A (en) 2021-09-10 2023-03-17 박동규 Manufacturing method of wood pellet using sawdust and waste powder paint as main materials
KR20240021392A (en) 2022-08-10 2024-02-19 박동규 Manufacturing Method of Solid Fuel Using Waste Powdery Paint and Sawdust

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KR102178302B1 (en) * 2020-08-25 2020-11-12 여수바이오 주식회사 Solid fuel producting method wasted coating yarn for shell
KR102430485B1 (en) * 2022-04-06 2022-08-09 주식회사 에스비씨원 Wood pellets and manufacturing method thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230037772A (en) 2021-09-10 2023-03-17 박동규 Manufacturing method of wood pellet using sawdust and waste powder paint as main materials
KR20240021392A (en) 2022-08-10 2024-02-19 박동규 Manufacturing Method of Solid Fuel Using Waste Powdery Paint and Sawdust

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