KR100297949B1 - Charcoal made use of fuel - Google Patents

Charcoal made use of fuel Download PDF

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Publication number
KR100297949B1
KR100297949B1 KR1019990000450A KR19990000450A KR100297949B1 KR 100297949 B1 KR100297949 B1 KR 100297949B1 KR 1019990000450 A KR1019990000450 A KR 1019990000450A KR 19990000450 A KR19990000450 A KR 19990000450A KR 100297949 B1 KR100297949 B1 KR 100297949B1
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South Korea
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fuel
powder
wood
ocher
charcoal
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KR1019990000450A
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Korean (ko)
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KR20000050516A (en
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이두균
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김옥빈
주식회사 바이오 엔
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    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS 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
    • C10L5/00Solid fuels
    • C10L5/40Solid fuels essentially based on materials of non-mineral origin
    • C10L5/44Solid fuels essentially based on materials of non-mineral origin on vegetable substances
    • C10L5/442Wood or forestry waste
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS 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
    • C10L2230/00Function and purpose of a components of a fuel or the composition as a whole
    • C10L2230/14Function and purpose of a components of a fuel or the composition as a whole for improving storage or transport of the fuel
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS 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
    • C10L2230/00Function and purpose of a components of a fuel or the composition as a whole
    • C10L2230/22Function and purpose of a components of a fuel or the composition as a whole for improving fuel economy or fuel efficiency
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS 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
    • C10L2250/00Structural features of fuel components or fuel compositions, either in solid, liquid or gaseous state
    • C10L2250/06Particle, bubble or droplet size
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/10Biofuels, e.g. bio-diesel
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/30Fuel from waste, e.g. synthetic alcohol or diesel

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Forests & Forestry (AREA)
  • Wood Science & Technology (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)

Abstract

본 발명은 숙박업소 및 원예농가의 난방용 연료로 이용하고자 제안된 연료용 목탄 및 그 제조방법에 관한 것으로서, 이를 설명하면 폐목재나 톱밥을 미세입자로 분쇄한 목재분말과, 석분을 제거한 황토분말을 일정비율로 혼합하여 성형기에서 원형 형상으로 성형하여 이를 일정시간 송풍 건조 시켜 제조하므로서 유류연료 및 석탄연료의 대체 연료로서 사용하기 위하여 제안된 것이다.The present invention relates to a fuel charcoal proposed for use as a heating fuel for lodgings and horticultural farms, and a method of manufacturing the same, which describes wood powder obtained by crushing waste wood or sawdust into fine particles, and ocher powder from which stone powder is removed. It is proposed to be used as a substitute fuel of oil fuel and coal fuel by mixing at a constant ratio, forming a circular shape in a molding machine, and then blowing it for a predetermined time.

상기의 목적을 달성하기 위하여 본 발명은 목재나 톱밥을 분쇄기에 의해 0.4∼0.7mm의 미세입자로 분쇄하고, 황토를 물에 풀어서 석분을 제거하고 침전지에서 72시간 정도 침지하여 황토분말을 얻는 예비공정과; 상기의 예비공정에서 얻은 목제분말과 황토분말을 부피비로 7:1∼9:1의 비율로 믹서기에 넣고 물을 첨가하여 교반하는 혼합공정과; 상기 혼합된 원재를 지름40mm내외의 성형기에 넣고 일정한 형상으로 제작하는 성형공정과; 성형된 원재에 함유되어 있는 수분을 4일 정도 송풍 건조시켜 제거하는 건조공정으로 연료용 목탄을 제조하는 것이다.In order to achieve the above object, the present invention is a preliminary process of crushing wood or sawdust into fine particles of 0.4 ~ 0.7mm by a pulverizer, releasing ocher in water to remove stone powder and soaking in sedimentation basin for 72 hours to obtain ocher powder. and; Mixing the wood powder and ocher powder obtained in the above preliminary step into a blender in a volume ratio of 7: 1 to 9: 1 and adding water and stirring; A molding process of putting the mixed raw materials into a molding machine having a diameter of about 40 mm and producing a predetermined shape; A charcoal for fuel is manufactured by a drying process of removing the moisture contained in the molded raw material by blowing air for 4 days.

Description

연료용 목탄{CHARCOAL MADE USE OF FUEL}Charcoal for fuel {CHARCOAL MADE USE OF FUEL}

본 발명은 숙박업소나 원예농가의 난방용 연료로 이용하기 위하여 제안된 연료용 목탄에 관한 것으로서, 이를 구체적으로 설명하면, 목재 및 톱밥을 미세입자로 분쇄한 목재분말과, 석분을 제거한 황토분말을 일정비율로 혼합하여 성형틀로 원형 형상으로 성형하여 이를 일정시간 송풍 건조시켜 제조함으로서 유류연료의 대체 연료로서 사용하기 위하여 제안된 것이다.The present invention relates to a fuel charcoal proposed for use as a fuel for heating of lodgings or horticultural farms. Specifically, the present invention relates to a wood powder obtained by grinding wood and sawdust into fine particles, and a clay powder from which stone powder is removed. It is proposed for use as an alternative fuel of oil fuel by mixing in a mold to form a circular shape with a mold for blowing for a predetermined time.

일반적으로 산업용이나 난방용 등으로 사용하는 연료는 유류 및 석탄연료가 대부분을 차지하고 있으며, 이를 대체하기 위한 여러가지 연구가 끊임없이 진행되어 현재 제한된 분야에서 사용되기도 한다.In general, fuels used for industrial or heating use are mostly oil and coal fuels, and various researches to replace them are continuously conducted, and are currently used in limited fields.

그 대표적인 것이, 톱밥을 1차 연소시킨 후 압축 성형하여 타 연료의 발화용으로 사용하거나, 목재 자체를 화목보일러 연료로 사용하고 있으나, 장작용 연료는 연소시 많은 연기를 발생시키고, 발열량도 낮을뿐 아니라, 연료를 인력으로 공급해야 하며, 연소시 재의 비산이 많아 사용하는데 어려움이 많았다.A typical example is sawdust which is first burned and then compression molded to be used for ignition of other fuels, or wood itself is used as a firewood boiler fuel. However, long-acting fuels generate a lot of smoke during combustion and have a low calorific value. In addition, the fuel must be supplied to the manpower, it was difficult to use a lot of ash scattered during combustion.

본 발명은 상기와 같은 문제점에 착안해서 본 발명을 완성하기에 이른 것으로서, 건축현장 등에서 폐기되는 폐 목재 및 톱밥과 황토를 주 원료로하여 고열량을 얻을 수 있는 연료용 목탄을 제공하는데 있다.SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and thus, the present invention has been completed, and it provides a charcoal for fuel that can obtain high calorific value using waste wood, sawdust, and ocher as main raw materials discarded at a construction site.

본 발명의 다른 목적은 목재분말에 일정비율의 황토분말을 혼합하여 성형하므로서, 원형의 고체상태로 제조할 수 있어, 보일러 등에 연료를 자동으로 공급할 수 있으며, 목재분말과 황토분말이 접착되어 성형되므로, 연소시 풍량에 의해 재의 외부비산을 방지할 수 있으며, 목재를 분말로 만듦으로 연소시 완전연소를 도모할 수 있는 연료용 목탄을 제공하는데 있다.Another object of the present invention is to form a circular solid state by mixing the wood powder with a certain ratio of molding, it can be produced in a circular solid state, it is possible to automatically supply fuel to the boiler, so that the wood powder and the ocher powder is bonded and molded In addition, it is possible to prevent external scattering of ash by the air volume during combustion, and to provide fuel charcoal that can achieve complete combustion during combustion by making wood into powder.

상기의 목적을 달성하기 위하여 본 발명은 목재분말과 황토분말을 얻는 예비공정과; 목재분말과 황토분말을 교반하는 혼합공정과; 일정한 형상으로 제작하는 성형공정과; 건조공정으로 제조되는 연료용 목탄에 있어서, 상기 목재분말의 입경은 0.4∼0.7㎜이고, 목재분말과 황토분말은 부피비 7:1∼9:1로 혼합되는 것을 특징으로 한다.In order to achieve the above object, the present invention comprises a preliminary step of obtaining wood powder and ocher powder; A mixing step of stirring the wood powder and the ocher powder; A molding process for producing a predetermined shape; In the charcoal for fuel produced by the drying process, the particle size of the wood powder is 0.4 ~ 0.7mm, characterized in that the wood powder and ocher powder is mixed in a volume ratio of 7: 1 to 9: 1.

이하 본 발명의 바람직한 실시예와 이로부터 얻게되는 특유의 효과에 대하여 도면을 참조하여 상세히 설명하기로 한다.Hereinafter, exemplary embodiments of the present invention and specific effects obtained therefrom will be described in detail with reference to the accompanying drawings.

도 1은 본 발명의 전체 제조과정을 예시한 공정도1 is a process diagram illustrating the overall manufacturing process of the present invention

도 1은 본 발명의 전체 제조공정을 예시한 공정도로서, 본 도면에서와 같이 본 발명은 목재를 분쇄기로 분쇄하여 미세입자의 목재분말을 얻고, 황토를 물에 풀어서 석분을 제거하고 일정시간 침지하여 황토분말을 얻는 예비공정(10)과, 예비공정(10)에서 얻은 목재분말과 황토분말을 일정비율로 혼합하는 혼합공정(20)과, 혼합공정에서 교반된 원재를 성형기로 일정한 크기의 원형 형상으로 제작하는 성형공정(30) 및 성형공정에서 얻은 성형물에 함유되어 있는 수분을 제거하기 위한 건조공정(40)으로 이루어지는 것이다.1 is a process diagram illustrating the entire manufacturing process of the present invention, the present invention as shown in the present invention by crushing the wood with a pulverizer to obtain wood powder of fine particles, by removing the ocher in water to remove stone powder and immersed for a certain time Preliminary step (10) for obtaining ocher powder, mixing step (20) for mixing wood powder and ocher powder obtained in preliminary step (10), and raw materials stirred in the mixing step with a molding machine And a drying step 40 for removing water contained in the molding obtained in the molding step 30 and the molding obtained in the molding step.

상기의 예비공정(10)은 목재를 분쇄기로 분쇄하여 미세입자를 얻기위한 공정과, 황토를 물에 풀어서 석분을 제거한 후 침전시켜 황토분말을 얻는 공정으로 구분된다.The preliminary step (10) is divided into a process for obtaining fine particles by crushing wood with a grinder, and a process for obtaining ocher powder by releasing ocher in water to remove stone powder and then settle.

상기의 목재는 건축현장이나 제재소에서 나오는 폐목재나 톱밥을 이용하는 것으로서, 목재를 그대로 사용할 경우 쪼개거나 잘라서 장착형태로 만들어 사용하거나, 톱밥은 톱밥난로용으로 사용하기는 하나 열효율이 낮을뿐 아니라, 완전연소를 도모할 수 없기 때문에, 이를 최적의 연소상태와 연료를 자동으로 공급할 수 있도록 원형의 고체 연료로 제조하기 위하여, 미세입자로 가공할 필요성이 있는 것으로, 상기 목재나 톱밥을 미세입자로 분쇄하기 위해서는 공지의분쇄기를 사용하여 분쇄하며, 이를 0.4∼0.7mm의 망으로 배출시켜 미세분말로 만들게 된다.The wood is used as waste wood or sawdust from construction sites or sawmills. If the wood is used as it is, it is split or cut and used in the form of mounting or sawdust is used for sawdust stoves, but it is not only thermally efficient but also completely Since it is impossible to achieve combustion, it is necessary to be processed into fine particles in order to prepare it as a circular solid fuel so as to automatically supply the optimum combustion state and fuel, and to grind the wood or sawdust into fine particles. In order to grind using a known grinding machine, it is made into fine powder by discharging it into a mesh of 0.4 ~ 0.7mm.

그리고, 황토분말은 자연환경에서 채취한 양질의 황토를 물이 충만된 탱크에 투입하여 물에 섞어 풀으면 석분은 아래로 가라앉고, 물에 풀어진 황토분말은 높이 1.5m의 침전지로 보내어 72시간정도 침전시켜 석분을 제거한 황토분말을 얻게 되는 것이다.And, ocher powder is put in a tank filled with water, and the ocher powder is collected in natural environment, and mixed with water. The stone powder sinks down, and the ocher powder released in the water is sent to a 1.5m high sedimentation basin for 72 hours. It is to obtain the ocher powder which is precipitated to remove the stone powder.

상기의 목재를 미세한 입자로 분쇄하는 이유는 입자간의 접착력을 증대시키며, 최적의 연소조건으로 완전연소를 도모하여 최대의 열량을 얻을 수 있고, 원형의 형태로 제조하여 보일러 등에 연료를 자동으로 공급하기 위함이고, 황토분말은 일정한 접착력을 가지고 있으므로, 목재분말 입자간의 접착이 가능하여 연료를 고체화하기 위하여 필수 불가결한 요소이며, 연소시 서서히 연소되므로 화력조절이 용이하고, 목재분말과 접착되어 성형되므로 풍량에 의한 재의 비산을 방지할 수 있으며, 연소된 재를 퇴비로 활용하기 위하여는 가장 이상적인 재료인 것이다.The reason for crushing the wood into fine particles is to increase the adhesion between the particles, to achieve maximum heat by achieving complete combustion under optimum combustion conditions, and to manufacture fuel in a circular form to automatically supply fuel to boilers. Because ocher powder has a certain adhesive force, it is indispensable for solidifying fuel by adhering wood powder particles, and it is easy to control the fire power because it is gradually burned during combustion, and it is formed by adhering to wood powder. It is possible to prevent the scattering of ash by the most ideal material to use the combusted ash as compost.

상기와 같이 예비공정(10)에서 얻은 원재인 목재분말과 황토분말은 제품의 강도와 완전연소에 이상적인 비율로 교반기에 투입하여 교반하는 혼합공정(20)을 거치게 되는 것이다.Wood powder and ocher powder, which are raw materials obtained in the preliminary process 10 as described above, are subjected to a mixing process 20 for stirring by putting in a stirrer at an ideal ratio for strength and complete combustion of the product.

상기 교반기에 투입하는 목재분말의 비율은 부피비로 7:1∼9:1의 비율로 공급하고, 이에 소량의 물을 첨가하여 일정시간 반죽하게 되면, 목재분말과 황토분말이 이상적으로 혼합되는 것이다.The ratio of the wood powder to the stirrer is supplied in a ratio of 7: 1 to 9: 1 by volume, and when a small amount of water is added to knead for a predetermined time, the wood powder and the ocher powder are ideally mixed.

이어서 혼합공정(20)에서 혼합된 원재는, 직경 40mm정도의 성형틀이 대략 200∼300개 정도로 마련되어 있는 성형기에 공급하여 상부에서 또 다른 성형틀로서 압압하여 원형 형상의 성형물을 완성하는 성형공정(30)을 거치게 되는 것이다.Subsequently, the raw material mixed in the mixing step 20 is supplied to a molding machine having about 200 to 300 molding dies of about 40 mm in diameter and pressed into another mold to form a circular molded article at the top ( 30).

성형공정에서 40mm 정도의 직경을 갖는 원형 형상으로 성형하는 것은 보일러의 상부에 구비되어 있는 호퍼에서, 연료를 자동으로 연소실로 낙하를 유도할 수 있고, 탄의 완전연소를 도모하기 위함이다.Molding in a circular shape having a diameter of about 40 mm in the molding process is to induce the fuel to fall into the combustion chamber automatically in the hopper provided in the upper portion of the boiler, and to complete combustion of the coal.

또한 상기 성형 공정(30)에 의해서 원형 형상으로 제조된 성형물에는 일정량의 수분이 함유되어 있으므로, 이의 수분을 제거하기 위한 건조공정(40)을 거치게 되는 바, 이는 통풍이 원활한 건조실에서 건조판을 20개 정도 적재하여 풍량이 건조판을 관통시키는 방법으로 4일 정도 송풍 건조시키게되면, 성형물에 함유되어 있는 수분이 완전 증발되어 고체의 연료가 완성되는 것이다.In addition, since the molded product manufactured in a circular shape by the molding process 30 contains a predetermined amount of water, the drying process 40 is removed to remove the moisture thereof, which is a drying plate 20 in a drying room having a good ventilation. When the air is blown and dried for about 4 days by loading the airflow through the drying plate, the water contained in the molding is completely evaporated to complete the solid fuel.

상기와 같이 제조된 연료는 일정한 강도를 유지하고 있으므로 운반과정에서 쉽게 파손되는 일이 없을 뿐만 아니라, 경량이므로 이의 취급이 매우 용이하다.Since the fuel produced as described above maintains a certain strength, it is not only easily broken in the transport process, but also light, so its handling is very easy.

본 발명은 완제품에 대한 열량을 기존의 고체연료와 비교하여 대체연료로서 적합한가의 여부에 대하여, 한국 화학시험 연구원에 의뢰하여 시험한 결과, 하기의 표에서와 같이 본 발명에서 발생되는 열량이 매우 우수함을 알 수 있다.The present invention was tested by the Korea Institute of Chemical Testing, as to whether or not the calorie content of the finished product is suitable as an alternative fuel compared to the conventional solid fuel, the heat generated in the present invention is very excellent as shown in the following table. It can be seen.

상기의 실험치에서 알 수 있는 바와같이 본 발명의 열량은 기존에 사용되고 있는 고체연료와 비교할 때 열량에 있어서 매우 우수하며, 연소가스에 의한 위험성 및 대기오염이 극히 적으며, 연소된 재는 퇴비로 활용할 수 있으며, 소량의 풍량으로 연소가 이루어져 연도를 통한 열의 손실이 적어 보일러의 열효율을 최대한 높일 수 있으므로 대체연료로서 광범위하게 사용할 수 있는 것이다.As can be seen from the above experimental value, the calorific value of the present invention is very excellent in calorie value compared to the solid fuel used in the past, the risk of combustion gas and the air pollution is extremely low, and the burned ash can be used as compost. In addition, since the combustion is carried out with a small amount of air flow, there is little heat loss through the flue, so that the thermal efficiency of the boiler can be increased to the maximum, and thus it can be widely used as an alternative fuel.

이상과 같이 본 발명은 재활용하지 못하고 폐기되는 목재나 톱밥을 분쇄하고, 이에 소량의 황토분말을 혼합하여 고체연료로 제조하므로서, 발열량이 우수하며, 또한, 제품이 경량이므로 운반 등이 용이하고, 더욱이 기름대신 숙박업소나 농가주택, 원예농가의 난방 보일러의 연료 등으로 사용할 수 있으므로 유류의 수입대체 효과가 크고, 연소된 재는 퇴비로 사용할 수 있도록 제조함으로서, 화학비료 사용으로 인하여 산성으로 변한 농경지를 복원시킬 수 있는 매우 유용한 발명인 것이다.As described above, the present invention grinds wood or sawdust which is not recycled and recycled, and mixes a small amount of ocher powder to produce a solid fuel, so that the calorific value is excellent, and because the product is light, it is easy to transport, etc. Instead of oil, it can be used as fuel for lodging houses, farm houses, and heating boilers of horticultural farms, so it has a great effect of import substitution of oil, and manufactured combusted ash can be used as compost to restore farmland that has been changed to acidic acid by using chemical fertilizer. It is a very useful invention that can be.

Claims (1)

목재분말과 황토분말을 얻는 예비공정과; 목재분말과 황토분말을 교반하는 혼합공정과; 일정한 형상으로 제작하는 성형공정과; 건조공정으로 제조되는 연료용 목탄에 있어서,A preliminary process for obtaining wood powder and ocher powder; A mixing step of stirring the wood powder and the ocher powder; A molding process for producing a predetermined shape; In the charcoal for fuel produced by the drying process, 상기 목재분말의 입경은 0.4∼0.7㎜이고, 목재분말과 황토분말은 부피비 7:1∼9:1로 혼합되는 것을 특징으로 하는 연료용 목탄.The particle size of the wood powder is 0.4 ~ 0.7mm, charcoal for fuel, characterized in that the wood powder and ocher powder is mixed in a volume ratio of 7: 1 to 9: 1.
KR1019990000450A 1999-01-11 1999-01-11 Charcoal made use of fuel KR100297949B1 (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR850003434A (en) * 1983-10-27 1985-06-17 김태복 Gas-Free Fuel Using Straw Sawdust

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR850003434A (en) * 1983-10-27 1985-06-17 김태복 Gas-Free Fuel Using Straw Sawdust

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