KR102499500B1 - Manufacturing method of Livestock manure fuel - Google Patents

Manufacturing method of Livestock manure fuel Download PDF

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KR102499500B1
KR102499500B1 KR1020220161675A KR20220161675A KR102499500B1 KR 102499500 B1 KR102499500 B1 KR 102499500B1 KR 1020220161675 A KR1020220161675 A KR 1020220161675A KR 20220161675 A KR20220161675 A KR 20220161675A KR 102499500 B1 KR102499500 B1 KR 102499500B1
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livestock
manure
pellets
coffee
powder
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KR1020220161675A
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Korean (ko)
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남순덕
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남순덕
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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
    • C10L5/42Solid fuels essentially based on materials of non-mineral origin on animal substances or products obtained therefrom, e.g. manure
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01KANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K1/00Housing animals; Equipment therefor
    • A01K1/015Floor coverings, e.g. bedding-down sheets ; Stable floors
    • A01K1/0152Litter
    • A01K1/0155Litter comprising organic material
    • 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
    • C10L5/02Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
    • C10L5/34Other details of the shaped fuels, e.g. briquettes
    • C10L5/36Shape
    • C10L5/363Pellets or granulates
    • 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
    • C10L5/445Agricultural waste, e.g. corn crops, grass clippings, nut shells or oil pressing residues
    • 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
    • C10L2290/00Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/24Mixing, stirring of fuel components
    • 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
    • C10L2290/00Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/26Composting, fermenting or anaerobic digestion fuel components or materials from which fuels are prepared
    • 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
    • C10L2290/00Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/28Cutting, disintegrating, shredding or grinding
    • 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

Abstract

The present invention relates to livestock manure fuel and a preparation method thereof, which comprises the steps of: using the collected coffee waste to prepare coffee waste pellets with a moisture content of 15 to 20% at a weight ratio of 10 coffee waste to 1 grain powder; mixing the coffee waste pellets with one or more livestock manures selected from farmed animal waste such as cow manure, pig manure, chicken manure, and the like at a ratio of 2 to 4:1 relative to the coffee waste pellets; introducing the mixture into a composter to perform mixing, grinding and high-speed fermentation processes, thereby processing the mixture into fine livestock manure powder with a moisture content of 10-20%; and adding 3 to 5% of grain powder such as rice bran and waste wheat flour, which provides adhesiveness to the livestock manure powder, based on 100 weight of the livestock manure powder to form livestock manure fuel having a moisture content of 10 to 15%. Accordingly, coffee waste, an eco-friendly material with almost no harmful elements is reused to secure stable heat generation, thereby increasing livestock waste heat generation efficiency.

Description

축분 연료펠릿 및 그 제조방법{Manufacturing method of Livestock manure fuel}Livestock fuel pellets and manufacturing method thereof {Manufacturing method of Livestock manure fuel}

본 발명은 축분을 이용한 축분 고형연료 제조방법에 관한 것으로서, 보다 상세하게는 유해요소가 없는 친환경 커피박을 재사용하여 축분 발열 효율을 높이고 가축 축사용 깔개로도 활용할 수 있는 축분 연료펠릿 및 그 제조방법에 관한 것이다.The present invention relates to a method for manufacturing livestock meal solid fuel using livestock meal, and more particularly, livestock meal fuel pellets that can be used as livestock manure mats to increase livestock meal heating efficiency by reusing eco-friendly coffee waste without harmful elements, and a method for manufacturing the same It is about.

지금까지 신재생 에너지원 중 기장 높은 비중을 차지하는 재료는 우드펠릿이다. 우드펠릿은 나무와 톱밥 등 목재의 가공과정에서 사용되지 않는 부분들을 활용해 고체연료로 만든 것으로서, 제지회사나 플라스틱 업체에서 배출되는 목분은 그 유해성이 문제가 되고 있다. 특히 목분의 함수율은 10% 전후로 높은 편이고 쉽게 건조되지 않아서, 이를 분뇨에 이용할 경우 수분 조절이 용이하지 않고 유해성분과 가스가 축적되어 축사의 공기와 환경을 저해할 위험이 있다. 또 수입에 의존하고 있는 우드펠릿은 2025년부터 수입산 목재펠릿의 발전소 사용이 중단될 것이므로, 우드펠릿을 대체하는 에너지원의 개발이 시급한 실정이다.Until now, wood pellets have been the most important material among new and renewable energy sources. Wood pellets are made of solid fuel by utilizing unused parts in the wood processing process, such as wood and sawdust. In particular, wood flour has a high moisture content of around 10% and does not dry easily, so when it is used for manure, it is not easy to control moisture and there is a risk of damaging the air and environment of the barn due to the accumulation of harmful components and gases. In addition, wood pellets, which are dependent on imports, will stop using imported wood pellets in power plants from 2025, so it is urgent to develop an energy source that can replace wood pellets.

이러한 상황에서 본 발명인은 새로운 신재생 에너지원으로서 나날이 늘어나는 커피박에 주목하여 우드펠릿을 대체하고 동시에 가축분뇨 문제를 해결할 신기술을 개발하기에 이르렀다. In this situation, the present inventors paid attention to coffee waste, which is increasing day by day as a new renewable energy source, and came to develop a new technology to replace wood pellets and solve the livestock manure problem at the same time.

이에 본 발명의 기술적 기반이 되는 커피 슬러지를 이용한 유약(특허등록번호 제10-1917133호), 커피 슬러지를 이용한 고형탄 조성물 및 이를 이용한 연탄(특허등록번호 제10-1959764호) 및 커피 슬러지를 이용한 펠릿 제조방법(특허등록번호 제10-1980364호), 축분연료 조성물 및 그 제조방법(특허출원 제10-2020-0095840호) 등의 연장선 상에서 시.군 지방자치단체의 축분 문제 해결 및 국내 발전사업자들의 요구를 동시에 충족시키고자 본 발명을 연구, 개발하게 된 것이다. Therefore, a glaze using coffee sludge (Patent Registration No. 10-1917133), a solid coal composition using coffee sludge and briquettes using the same (Patent Registration No. 10-1959764) and coffee sludge, which are the technical basis of the present invention Resolving livestock manure problems of city and county local governments and domestic power generation companies on the extension of pellet manufacturing method (Patent Registration No. 10-1980364), livestock manure fuel composition and its manufacturing method (Patent Application No. 10-2020-0095840) In order to simultaneously satisfy their needs, the present invention was researched and developed.

축분 고형연료의 저위 칼로리는 1kg당 3,000kcal로서 안정적인 발열이 이루어져야 하고, 발전기 노후화의 주요 원인인 염소수치 0.3% 이하를 충족하여야 하나, 지금까지 축분에 함유된 염소 및 황 성분을 제거하는 기술들이 제시되지 못하고 있다. 즉, 한국특허공개공보 제10-2014-0047002호, 한국특허등록 제10-1175287호, 한국등록특허 제10-1687352 등 다수의 발명들이 제시되어 있으나, 유해요소들의 제거 및 안정적인 칼로리와 열효율의 문제를 해결하지 못한 것으로 보이고, 제조공정이 지나치게 복잡하고 효율이 높지 않아 상용화에 많은 문제점 등이 있다. The low calorie of livestock meal solid fuel is 3,000 kcal per 1 kg, which should generate stable heat and meet the chlorine level of 0.3% or less, which is the main cause of generator aging. However, technologies for removing chlorine and sulfur contained in livestock meal have been proposed not being able to That is, a number of inventions such as Korean Patent Publication No. 10-2014-0047002, Korean Patent Registration No. 10-1175287, and Korean Patent Registration No. 10-1687352 have been proposed, but the problem of removal of harmful elements and stable calorie and thermal efficiency has not been solved, and the manufacturing process is too complicated and the efficiency is not high, so there are many problems in commercialization.

이에 따라 본 발명은 상기 문제점을 해결하기 위하여, 유해요소가 거의 없는 친환경적인 재료인 커피박을 재사용하여 저위 칼로리 1kg당 3,000kcal 이상의 안정적인 발열을 확보하고 이를 이용하여 축분 발열 효율을 높이고, 발전소에서 장기적으로 사용할 수 있는 축분 연료펠릿 및 그 제조방법을 제공하는데 있다.Accordingly, in order to solve the above problems, the present invention reuses coffee waste, which is an eco-friendly material with little harmful elements, to secure stable heat generation of 3,000 kcal or more per 1 kg of low calories, increase the efficiency of livestock manure heating by using this, and use it to increase long-term heat generation in power plants It is to provide livestock manure fuel pellets that can be used as and a manufacturing method thereof.

또, 본 발명은 친환경적 재료로서 가축 축사용 깔개로도 활용할 수 있는 축분 연료펠릿을 제공하는데 있다. In addition, the present invention is to provide a livestock manure fuel pellet that can be utilized as an eco-friendly material for a livestock barn mat.

이러한 목적을 달성하기 위해 본 발명은, 수거된 커피박을 사용하여 커피박 1 : 곡물가루 0.1~ 0.2 중량비로 함수율 15~20%의 커피박 펠릿을 제조하는 단계 (S10); 상기 커피박 펠릿에 우분, 돈분, 계분 등의 분뇨 중 선택된 어느 하나 이상의 축분을 사용하여 커피박 펠릿 1 : 분뇨 2~4 중량비로 콤포스터에 투입하여 혼합, 분쇄 및 고속발효과정을 거쳐 함수율이 10~20%의 미립 축분 파우더로 가공하는 미립 축분 파우더 제조단계(S20); 상기 미립 축분 파우더 1: 커피박 3~4 중량비를 혼합하여 함수율 10~15%로 성형된 축분연료 펠릿을 제조하는 축분연료 펠릿 성형단계(S30); 상기 성형된 펠릿의 파우더 잔여물을 제거하여 선별하고 포장하는 단계(S40)를 포함하는 축분연료제조방법과 이를 통해 제조되는 축분연료 펠릿인 것을 특징으로 한다.In order to achieve this object, the present invention uses the collected coffee waste to prepare coffee waste pellets having a moisture content of 15 to 20% at a weight ratio of coffee waste 1: grain flour of 0.1 to 0.2 (S10); Using one or more animal manure selected from manure such as cow manure, pig manure, and chicken manure in the coffee ground pellets, coffee ground pellets 1: manure 2 to 4 weight ratio, put into a composter, mixed, pulverized, and high-speed fermentation process to obtain a moisture content of 10 A step of manufacturing fine-grained livestock powder processing into ~20% of fine-grained livestock powder (S20); A livestock meal fuel pellet forming step (S30) of manufacturing livestock meal fuel pellets molded with a moisture content of 10 to 15% by mixing the particulate livestock meal powder 1:3 to 4 coffee grounds by weight; It is characterized in that the livestock manure fuel manufacturing method including the step (S40) of removing, sorting and packaging powder residues of the molded pellets and the livestock manure fuel pellets manufactured through this.

이때, 상기 커피박 펠릿을 우사에 깔개로 사용하여 축분파우더로 제조하는 것을 특징으로 한다.At this time, it is characterized in that the coffee ground pellets are used as a bedding for cowhide and produced as livestock powder.

그리고, 연료 발열량을 높이기 위해서 커피박 펠릿 : 축분 혼합 시에 커피박 펠릿의 비율을 점차 높여나가면서 조절하는 것을 특징으로 한다.In addition, in order to increase the calorific value of fuel, the ratio of coffee waste pellets: coffee waste pellets is gradually increased and adjusted when mixing livestock meal.

이상의 구성 및 작용에 의하면, 본 발명에 의한 축분연료는 kg당 평균 3,500kcal 이상에 달하는 안정적인 저위발열량을 달성하여, 축분 연료를 꺼리는 주요 원인인 낮고 불안정한 발열량 문제를 해결하였다. 이에 시멘트 소성로, 화력발전시설, 열병합 발전시설 등 발전용량이 2 메가와트 이상인 발전시설에 안정적으로 사용할 수 있고, 지역난방시설, 산업보일러 , 축산농가 등 석탄사용량이 시간당 2톤 이상인 시설에도 사용할 수 있다. According to the configuration and operation described above, the livestock meal fuel according to the present invention achieves a stable low calorific value reaching an average of 3,500 kcal or more per kg, thereby solving the problem of low and unstable calorific value, which is the main reason for reluctance to use livestock meal fuel. As a result, it can be stably used in power generation facilities with a power generation capacity of 2 megawatts or more, such as cement furnaces, thermal power plants, and cogeneration facilities, and can also be used in facilities that consume more than 2 tons of coal per hour, such as district heating facilities, industrial boilers, and livestock farms. .

또한, 본 발명에 의한 축분연료는 염소, 황을 비롯한 유해요소가 기준치보다 매우 낮은 수치로 나타나, 통상의 축분 펠릿이 연소 시 황, 질소, 염소 등의 대기오염 배출이 다른 바이오매스에 비해 많아 환경문제를 일으키고 장기적으로 염소 및 황 성분이 발전기기를 부식시키는 문제점을 동시에 해결하였다. 또 가축의 건강에도 유익하며, 주변 민원 발생의 주원인이 되는 악취도 감소시킬 수 있다.In addition, the livestock manure fuel according to the present invention has harmful elements such as chlorine and sulfur at a much lower level than the standard value, so that when conventional livestock pellets are burned, air pollutants such as sulfur, nitrogen, and chlorine are released more than other biomass. At the same time, it solves the problem of causing problems and long-term corrosion of generators by chlorine and sulfur components. In addition, it is beneficial to the health of livestock and can reduce odor, which is the main cause of civil complaints.

그리고, 본 발명에 의한 커피박 펠릿이 우사에 활용하여 설치될 경우, 커피박 깔개는 1년에 1~2회 갈이를 진행하면 되므로 농가의 축사 관리 및 비용에도 매우 효과적이다. In addition, when the coffee ground pellets according to the present invention are utilized and installed in a barn, the coffee ground cover only needs to be changed once or twice a year, which is very effective for farm management and cost.

나아가 본 발명을 실시하기 위한 생산시설은 배합기, 펠릿기계, 호퍼, 켄베이어벨트, 이송기, 건조기, 포장라인 등 비교적 간단한 장치를 확충하면 되고, 원료가 되는 커피박 및 가축 분료는 환경오염을 유발시킬 수 있는 부산물은 안정적인 조달이 가능하므로 상용화가 가능하다. 결론적으로 목재펠릿을 대체할 수 있는 신재생에너지로 매우 적합하고 REC를 충족할 수 있다.Furthermore, production facilities for carrying out the present invention only need to expand relatively simple devices such as a mixer, pellet machine, hopper, conveyor belt, transfer machine, dryer, packaging line, etc., and coffee grounds and livestock waste, which are raw materials, cause environmental pollution. Commercialization is possible because by-products that can be processed can be stably procured. In conclusion, it is very suitable as a renewable energy that can replace wood pellets and can meet the REC.

도 1은 본 발명에 따른 축분 펠릿 제조방법을 나타내는 개략흐름도
도 2는 본 발명에 사용된 수거된 커피박 사진
도 3(a)는 함수율 측정기, 3(b)는 콤포스트장치
도 4는 본 발명에 의한 커피박 펠릿 시험성적서
도 5는 본 발명에 사용되는 우사용 커피박 펠릿 깔개의 실시예
도 6은 본 발명의 축분연료 펠릿의 성형에 사용되는 펠릿성형기의 사진
도 7은 본 발명의 진동선별기를 이용한 파우더 잔여물 제거단계의 사진
도 8은 본 발명에 의해 제조된 축분연료 펠릿의 샘플 사진
도 9는 본 발명에 의한 우분 연료 펠릿 시험성적서
도 10는 본 발명에 의한 돈분 연료 펠릿 시험성적서
도 11는 본 발명에 의한 계분 연료 펠릿 시험성적서
1 is a schematic flow chart showing a method for manufacturing livestock meal pellets according to the present invention
Figure 2 is a photograph of the collected coffee waste used in the present invention
Figure 3 (a) is a moisture content meter, 3 (b) is a compost device
4 is a coffee ground pellet test report according to the present invention
5 is an embodiment of a coffee ground pellet bedding for cattle used in the present invention
Figure 6 is a photograph of a pellet molding machine used for molding the livestock meal fuel pellets of the present invention
Figure 7 is a photograph of the powder residue removal step using the vibration separator of the present invention
8 is a sample photograph of livestock manure fuel pellets produced by the present invention
9 is a test report of cow powder fuel pellets according to the present invention
10 is a pig manure fuel pellet test report according to the present invention
11 is a chicken manure fuel pellet test report according to the present invention

이하, 도면을 통하여 본 발명에 의한 축분연료 제조방법의 실시 예를 설명한다.Hereinafter, an embodiment of a method for manufacturing livestock meal fuel according to the present invention will be described with reference to the drawings.

도 1은 본 발명에 따른 축분연료 제조방법을 나타내는 개략 흐름도이다.1 is a schematic flow chart showing a method for manufacturing livestock meal fuel according to the present invention.

수거된 커피박을 사용하여 커피박 1 : 곡물가루 0.1~ 0.2 중량비로 함수율 15~20%의 커피박 펠릿을 제조하는 단계 (S10); 상기 커피박 펠릿에 우분, 돈분, 계분 등의 분뇨 중 선택된 어느 하나 이상의 축분을 사용하여 커피박 펠릿 1 : 분뇨 2~4 중량비로 콤포스터에 투입하여 혼합, 분쇄 및 고속발효과정을 거쳐 함수율이 10~20%의 미립 축분 파우더로 가공하는 미립 축분 파우더 제조단계(S20); 상기 미립 축분 파우더 1: 커피박 3~4 중량비를 혼합하여 함수율 10~15%로 성형된 축분연료 펠릿을 제조하는 축분연료 펠릿 성형단계(S30); 상기 성형된 펠릿의 파우더 잔여물을 제거하여 선별하고 포장하는 단계(S40)를 포함하는 것을 특징으로 하는 축분연료제조방법이다.Preparing coffee ground pellets having a moisture content of 15 to 20% at a weight ratio of coffee waste 1: grain powder of 0.1 to 0.2 using the collected coffee waste (S10); Using one or more animal manure selected from manure such as cow manure, pig manure, and chicken manure in the coffee ground pellets, coffee ground pellets 1: manure 2 to 4 weight ratio, put into a composter, mixed, pulverized, and high-speed fermentation process to obtain a moisture content of 10 A step of manufacturing fine-grained livestock powder by processing into ~20% of fine-grained livestock powder (S20); A livestock meal fuel pellet forming step (S30) of manufacturing livestock meal fuel pellets molded with a moisture content of 10 to 15% by mixing the particulate livestock meal powder 1:3 to 4 coffee grounds by weight; It is a livestock manure fuel manufacturing method characterized in that it comprises the step of removing, sorting and packaging the powder residue of the molded pellets (S40).

이하 도면을 참조하여 발명을 상세히 설명한다.The invention will be described in detail with reference to the drawings below.

축사용 커피박 펠릿 준비단계 (S10)Coffee waste pellet preparation step for livestock farming (S10)

본 발명에 사용되는 수거된 커피박 내지 커피 슬러지는 도 2와 같은 형태로서, 함수율 15~20%이면 별도로 커피 슬러지를 압착 분쇄하거나 건조할 필요가 없다. 본 발명은 수거된 커피박을 그대로 사용할 수 있으며 별도 공정이 필요 없으므로 원가절감이 가능하다. The collected coffee waste or coffee sludge used in the present invention is in the form of FIG. 2, and if the water content is 15 to 20%, there is no need to separately press and grind the coffee sludge or dry it. In the present invention, the collected coffee waste can be used as it is, and cost reduction is possible because a separate process is not required.

커피박 10: 곡물가루 1~2의 중량비로 혼합하여 펠릿을 제조하며, 펠릿 성형단계에서 부서짐이 발생할 경우는 스팀공급기를 이용해 일정 함수율 15~20%가 확보되도록 수분을 공급하여 함수율을 조절한다. 함수율이 15% 미만인 경우 펠릿 성형단계에서 쉽게 뭉쳐지지 않아 부서짐이 발생할 수 있고, 또 20%를 초과하는 경우는 수분으로 인한 곰팡이(부패)가 발생, 악취가 심해지고, 지나치게 점성이 높아서 재료 간의 뭉침 현상이 발생할 수도 있다. 따라서 이 단계에서 스팀공급기를 이용해 수분을 공급하거나, 건조하여 적정 함수율을 조절하는 것이 중요하다.Coffee waste 10: Pellets are prepared by mixing in a weight ratio of 1 to 2 grain powder, and when breakage occurs in the pellet forming step, moisture is supplied to ensure a certain moisture content of 15 to 20% using a steam supply to adjust the moisture content. If the moisture content is less than 15%, it may not be easily agglomerated during the pellet molding step, resulting in breakage, and if it exceeds 20%, mold (decay) due to moisture occurs, the odor becomes severe, and the material is too viscous, resulting in aggregation between materials. phenomena may occur. Therefore, at this stage, it is important to supply moisture using a steam supply or to adjust the moisture content by drying.

상기 단계에서 제조된 커피박 펠릿의 함수율을 측정하면 15~20%의 범위가 되며, 이러한 함수율 15~20% 범위는 축분의 악취제거, 수분(소변) 건조, 연료의 발열량 개선에 유효한 범위로서 기술적 의미가 있다. 함수율 측정은 도 3(a)와 같은 함수율 측정기를 사용하여 이루어진다. When the moisture content of the coffee ground pellets prepared in the above step is measured, it is in the range of 15 to 20%. It has meaning. Moisture content measurement is performed using a moisture content measuring device as shown in FIG. 3 (a).

도 4는 공인된 인증기관인 ㈜대덕분석기술연구원이 발급한 본 발명에 의한 커피박 펠릿의 시험성적서이다. 수거된 커피박 1톤에 접착성을 제공하기 위해 미강 또는 폐밀가루 100kg을 첨가하여 커피박 펠릿을 제조하여, 그 샘플을 ㈜대덕분석기술연구원에서 분석하였다. 4 is a test report of the coffee ground pellets according to the present invention issued by the Daedeok Analysis Technology Research Institute, which is an authorized certification body. Coffee waste pellets were prepared by adding 100 kg of rice bran or waste wheat flour to provide adhesion to 1 ton of collected coffee waste, and the sample was analyzed at the Daedeok Analysis Technology Research Institute.

그 결과, 커피박 펠릿은 함수율 10.3%, 저위발열량 4,300kcal/kg, 염소 0.01wt%, 기타 수은, 카드륨 등 유해성분들은 거의 없는 것으로 나타나 가축용으로 위해성이 전혀 없으며 발열량도 높은 것으로 나타났다.As a result, the coffee ground pellets had a water content of 10.3%, a low calorific value of 4,300kcal/kg, chlorine of 0.01wt%, and almost no other harmful components such as mercury and cadmium, showing no risk for livestock and high calorific value.

이에 본 발명은 축사에서 기존 볏집이나 깔개를 대체하여 축사용 깔개로 충분히 사용될 수 있도록 다양한 실시 예를 연구하였다.Therefore, the present invention studied various embodiments so that it can be sufficiently used as a livestock mat in place of the existing rice house or mat in a barn.

미립 축분 파우더 제조단계(S20)Particulate livestock powder manufacturing step (S20)

본 발명에 따른 축분 연료 파우더 조성물에 사용되는 축분은 우분, 돈분, 계분 등과 같은 사육동물 배설물 중 선택된 어느 하나 이상을 사용한다. 상기 S20에서 제조된 커피박과 축분을 중량대비 1: 2~4 비율로 혼합하여, 이 혼합물을 콤포스터(축분고속 건조발효시스템) 장치에 투입하여 함수율이 10~20%로 조정될 때까지 혼합, 분쇄 및 고속발효과정을 거쳐 미립파우더 상태가 되도록 가공한다. As the livestock manure used in the livestock manure fuel powder composition according to the present invention, at least one selected from breeding animal manure such as cow manure, pig manure, and chicken manure is used. Mix the coffee grounds and livestock flour prepared in S20 in a ratio of 1: 2 to 4 by weight, put the mixture into a composter (high-speed drying and fermentation system for livestock powder) and mix until the moisture content is adjusted to 10 to 20%, It is processed into fine powder through grinding and high-speed fermentation.

함수율이 10~20% 범위일 때 악취의 95%가 제거되고 축분량 또한 원래 투입량의 75%가 감소되어 악취 저감 및 분뇨처리 효율이 대폭 개선되어 축분에 포함된 세균이나 바이러스가 사멸된 축분 커피박 파우더가 제조된다.When the moisture content is in the range of 10 to 20%, 95% of the odor is removed and the amount of livestock content is also reduced by 75% of the original input amount, reducing odor and greatly improving the efficiency of manure treatment. powder is produced.

미립 축분 파우더의 함수율을 10% 미만으로로 조절하기 위해서는, 콤포스터의 건조 온도를 높이거나 가공 시간을 늘여야 하므로 경제성과 효율성이 떨어진다. 또 수분이 없어지면서 펠릿형태로 성형하기도 어려운 문제점이 나타난다. In order to adjust the moisture content of the particulate livestock powder to less than 10%, the drying temperature of the composter must be increased or the processing time must be increased, resulting in poor economics and efficiency. In addition, as the moisture disappears, it is difficult to mold into a pellet form.

반면, 함수율이 20% 이상에서는 지나친 수분으로 인한 곰팡이로 인해 부패가 발생하기 쉽고, 악취가 심하며, 강도가 약해 펠릿 형태로 성형했을 때 잘 파손되는 문제점이 있다.On the other hand, when the moisture content is more than 20%, there are problems in that it is easy to rot due to mold due to excessive moisture, has a bad odor, and is easily damaged when molded in a pellet form due to low strength.

축분에 포함된 수분(소변)함유량은 우분은 80~90%(한우80%, 젖소90%), 돈분과 계분은 75~80% 정도로서 통상적으로 75~90%에 이르는 높은 수분이 있으므로, 이를 단계에서 함수율이 10~20%의 축분 파우더를 제조하는 것이 중요하다.The moisture content (urine) contained in livestock manure is 80 to 90% in cow manure (Korean beef 80%, cow milk 90%), and pig manure and chicken manure are about 75 to 80%. It is important to prepare livestock powder with a moisture content of 10 to 20%.

도 3(b)는 본 발명에서 사용될 수 있는 콤포스터의 실시례로서, 내부에 구비된 교반날개가 구비된 발효조에 축분을 투입한 뒤, 열풍기 등을 이용하여 열을 가함으로서 단 시간내에 발효와 건조가 이루어진다. 발효 건조과정에서 내부에 구비된 교반날개가 작동되며 투입된 축분의 혼합, 분쇄가 동시에 이루어지고, 축분의 상태에 따라 발효제 또는 약품을 더 투입하여, 혼합, 분쇄 및 고속발효과정을 거쳐 24시간 이내에 미립파우더 상태가 되도록 가공한다.Figure 3 (b) is an example of a composter that can be used in the present invention, after putting livestock powder into a fermentation tank equipped with agitating blades provided therein, and then applying heat using a hot air blower, fermentation and fermentation in a short time drying takes place During the fermentation and drying process, the agitation blades provided inside are operated, mixing and pulverization of the introduced livestock meal are performed at the same time, and according to the condition of the livestock meal, a leavening agent or chemical is additionally added, and through mixing, pulverization, and high-speed fermentation process, fine grains are obtained within 24 hours. Processed to a powder state.

축분연료펠릿 성형단계 (S30)Livestock meal fuel pellet forming step (S30)

상기 미립 축분 파우더 1: 커피박 3~4 중량비를 혼합하여 함수율 10~15%로 성형된 축분연료 펠릿을 제조하는 축분연료 펠릿 성형단계하는 단계이다.This is a step of forming livestock meal fuel pellets by mixing the particulate livestock meal powder 1: coffee grounds 3-4 weight ratio to produce livestock meal fuel pellets molded with a moisture content of 10-15%.

상기 파우더 혼합물을 도 6과 같이 제시된 펠렛 성형기 등을 이용하여 노즐헤드의 크기를 조절하여 다양한 사이즈의 축분연료 펠릿을 제조하며, 미립축분 파우더에는 곡물 분말이 포함되어 있어 점성을 보유하고 있으므로 성형이 가능하다.The size of the nozzle head is adjusted using the powder mixture using a pellet molding machine as shown in FIG. 6 to produce livestock fuel pellets of various sizes, and since the fine-grained livestock powder contains grain powder and has viscosity, it can be molded. do.

발열량을 체크해 가면서, 발열량을 높이기 위하여 커피박을 상기 미립 축분 파우더 1: 커피박 3~4 중량비를 혼합하여 함수율 10~15% 범위가 되도록 축분연료 펠릿을 성형한다. 이 단계에서 펠릿 성형을 위한 고온 압착과정에서 발생되는 수증기를 배출하여 1시간 내 상온 수준으로 온도를 조절하는 쿨링단계가 포함될 수 있다.While checking the calorific value, in order to increase the calorific value, the coffee waste is mixed with a weight ratio of 3 to 4 coffee waste powder 1: coffee waste to form livestock flour pellets so that the moisture content is in the range of 10 to 15%. In this step, a cooling step may be included to adjust the temperature to room temperature within 1 hour by discharging steam generated in the high-temperature compression process for pellet molding.

상기 함수율 10~15% 범위가 기술적으로 중요한 의미는, 축분연료 펠릿의 함수율을 10% 이하로 조절하려면 펠릿형태로 성형 후 재건조작업이 필요해 경제성이 떨어지고, 15% 이상이면 수분으로 인한 곰팡이(부패)가 발생하기 쉽고, 악취가 심해지고 강도도 약해지는 문제가 발생하기 때문이다.The technical significance of the moisture content range of 10 to 15% is that in order to adjust the moisture content of livestock manure fuel pellets to 10% or less, reconstruction work is required after molding in the form of pellets, which reduces economic feasibility, and if it is more than 15%, mold (rotting) due to moisture ) is likely to occur, and the odor becomes worse and the strength becomes weaker.

선별 및 포장 단계 (S40)Sorting and packaging step (S40)

상기 과정에서 성형된 펠릿은 도 7과 같이 채반구조의 선별기에 투입 후 진동을 발생시켜 남아있는 파우더 잔여물을 제거한다. 성형되지 못한 잔여 파우더는 진동에 의해 채반 아래로 배출되고, 성형된 제품만 채반을 통해 걸러진다. 걸러진 펠릿은 별도 컨베이어 등을 통해 이송되어 톤백과 같은 포장수단에 투입 저장된다.The pellets molded in the above process are put into a sorter having a tray structure as shown in FIG. 7 and then vibrated to remove remaining powder residue. The remaining unformed powder is discharged down the sieve by vibration, and only the molded products are filtered through the sieve. The filtered pellets are transported through a separate conveyor, etc., and put into and stored in a packaging means such as a ton bag.

최종적으로 도 8은 본 발명에 의해 제조된 펠릿으로서 각 축분의 물성에 따라 색상에 차이가 있는데, 도 9는 본 발명에 의한 우분 펠릿에 대한 시험성적서로서, 함수율 7.3%, 회분 14.4%, 저위발열량 3,880kcal/kg, 염소 0.17wt%, 도 10은 본 발명에 의한 돈분 펠릿에 대한 시험성적서로서, 함수율 9.4%, 회분 15.6%, 저위발열량 3,750kcal/kg, 염소 0.24wt%, 도 11은 본 발명에 의한 축분 펠릿에 대한 시험성적서로서, 함수율 11.4%, 회분 13.8%, 저위발열량 3,390kcal/kg, 염소 0.27wt% 로서, 기타 중금속 등 유해요소가 거의 없는 것으로서, 현재 발전소가 요구하는 축분 고형연료의 저위 칼로리는 1kg당 3,000kcal 이상, 염소의 0.3% 이하의 수준을 모두 만족하고 있는 것으로 확인된다.Finally, FIG. 8 is a pellet manufactured according to the present invention, and there is a difference in color according to the physical properties of each livestock meal. FIG. 3,880 kcal / kg, chlorine 0.17wt%, Figure 10 is a test report for pig manure pellets according to the present invention, moisture content 9.4%, ash 15.6%, low calorific value 3,750kcal / kg, chlorine 0.24wt%, Figure 11 is the present invention As a test report for livestock meal pellets, moisture content is 11.4%, ash content is 13.8%, low heating value is 3,390kcal/kg, chlorine is 0.27wt%, and there are almost no harmful elements such as other heavy metals. It is confirmed that the low calorie content satisfies all levels of 3,000 kcal or more per 1 kg and 0.3% or less of chlorine.

이하 상기 제조방법에 따른 각 가축분뇨별 실시예를 상세히 설명한다.Hereinafter, examples for each livestock manure according to the manufacturing method will be described in detail.

[실시예 1] 우분 연료펠릿 및 그 제조방법[Example 1] Cow manure fuel pellets and manufacturing method thereof

본 발명에 의한 우분 축분펠릿 제조를 위해, 고령군 성산면에 소재한 500평에 160마리 소가 가육되고 있는 농가에서 실시하였다. 본 발명에 의한 축사용 커피박을 6톤 투입하여 바닥에 깔고 6개월 후에 가축들이 배설한 상태의 커피박 펠릿을 수거하였다. 도 5(a)는 본 발명에 의한 커피박 펠릿을 나타내고, 도 5(b)는 상기 펠릿을 소 축사에 깔려진 상태를 나타내면, 도 5(c)는 펠릿에 가축들이 배설한 상태의 펠릿을 수거한 것을 나타낸다. For the production of cattle manure pellets according to the present invention, it was carried out in a farmhouse where 160 cows are raised in 500 pyeong located in Seongsan-myeon, Goryeong-gun. 6 tons of coffee grounds for barn according to the present invention were put on the floor, and after 6 months, coffee ground pellets excreted by livestock were collected. Figure 5 (a) shows the coffee ground pellets according to the present invention, Figure 5 (b) shows the pellets laid on a cattle barn, Figure 5 (c) shows the pellets in a state in which livestock excreted on the pellets indicate what has been collected.

본 발명의 커피박 펠릿을 축사에 깔게 되면, 축사용 커피박 깔개 위에 배설된 축분의 수분과 악취가 시간이 경과 됨에 따라 자연스럽게 흡수와 건조가 이루어져, 당초 80~90% 정도의 높은 함수율이 40~50%로 낮추어진다. When the coffee ground pellets of the present invention are laid in a barn, the moisture and odor of the livestock excreted on the coffee grounds for the barn are naturally absorbed and dried over time, so that a high moisture content of about 80 to 90% is lowered to 50%.

우분의 경우는 다른 가축들이 자주 축사를 청소하여야 하는 것과는 달리, 시간이 경과 할수록 분뇨가 커피박 펠릿에 흡수, 자연 건조되어서 1년에 2~3차례 정도만 수거하여도 악취가 거의 해소되므로 다른 가축과 달리 축사 청소와 오염수 유출이 없다. 또 수거 시에는 자연스럽게 함수율 40~50 %에 달해 이를 콤포스터(고속발효 건조시스템)에 투입하여 미립 파우더 형태로 함수율이 20% 이하가 되도록 가공하면 약 30톤의 우분 파우더가 생산된다. 상기 우분 커피박 펠릿 파우더에 커피박 900kg을 투입하여 펠릿을 성형하면, 함수율 10~15%의 축분연료 펠릿이 제조된다. 상기 펠릿의 파우더 잔여물을 제거하여 선별하고 그 샘플을 ㈜대덕분석기술연구원에 보내어 분석하였다.In the case of cow manure, unlike other livestock that have to clean the barn frequently, the manure is absorbed into the coffee waste pellets and dried naturally over time, and the odor is almost eliminated even if it is collected only 2-3 times a year, so it is easy to mix with other livestock. Otherwise, there is no barn cleaning and no leakage of contaminated water. Also, at the time of collection, the moisture content naturally reaches 40-50%, and it is put into a composter (high-speed fermentation and drying system) to be processed to a moisture content of 20% or less in the form of fine powder, and about 30 tons of cow meal powder is produced. When 900 kg of coffee grounds are added to the cow meal coffee waste pellet powder to form pellets, livestock fuel pellets having a moisture content of 10 to 15% are produced. The powder residue of the pellet was removed and sorted, and the sample was sent to the Daedeok Analytical Technology Research Institute for analysis.

그 결과 도 9와 같이, 함수율은 10.3%, 염소함량은 0.01wt%, 저위 발열양은 4,300kcal/kg로 확인되어 요구 기준을 훨씬 상회하고 있어서 발전소 연료로 매우 적합할 뿐 아니라 기존의 축사 깔개를 대체할 수 있는 매우 친환경적 기술로 인정된다. 또 발열량이 3,000kcal/kg 에 미치지 못할 경우, 커피박 펠릿을 더 투입하면 발열량을 증가시킬 수 있다. 우 축사 깔개용으로 커피박 펠릿을 사용할 경우 정확한 우분의 투입량을 측정하기 곤란할 수 있으므로, 발열량을 체크하여 발열량을 높이기 위해서는 커피박 펠릿을 조정하면 된다. As a result, as shown in FIG. 9, the moisture content was 10.3%, the chlorine content was 0.01wt%, and the low calorific value was 4,300 kcal/kg, far exceeding the required standards, making it very suitable as a fuel for power plants and replacing existing barn litter. It is recognized as a very eco-friendly technology that can be done. In addition, if the calorific value is less than 3,000 kcal/kg, the calorific value can be increased by adding more coffee waste pellets. When coffee ground pellets are used for cow barn litter, it may be difficult to measure the exact amount of cow manure input. In order to increase the calorific value by checking the calorific value, the coffee ground pellets can be adjusted.

[실시예 2] 돈분 연료 펠릿 [Example 2] Pork manure fuel pellets

돈분의 경우 축분 중에서 발열량이 낮고, 가장 악취가 심하며, 높은 염소 수치를 가진 축분이다. 이를 해소 하고자 돈분을 탈수하여 수분을 제거 한 후에, 총중량 대비 돈분: 커피박을 2:1 비율로 혼합하여 함께 콤포스터로 투입하여 함수율 20% 정도의 돈분 펠릿 파우더를 제조하였다. In the case of pig manure, among livestock manure, it has the lowest calorific value, the most bad smell, and has a high chlorine level. In order to solve this problem, after dehydrating the pig manure to remove moisture, pork manure: coffee waste was mixed in a ratio of 2: 1 relative to the total weight and put together in a composter to prepare pork manure pellet powder with a moisture content of about 20%.

[실시예 3] 계분 연료 펠릿 [Example 3] Chicken manure fuel pellets

계분의 경우 가축분료 중 가장 발열량이 낮아서 저위 발열량이 1,200~1.900 kcal에 불과하다. 또 축산 농가는 분뇨를 처리하기 위해 분료저장탱크를 별도로 구비하여야 하는 문제도 있다. 이러한 발열량과 경제성의 문제점을 해결하기 위해 닭장 하부에 축분 이송 장치를 설치하여 바로 콤포스터로 이동시 함께 커피박 펠릿과 함께 콤포스터로 투입하는 것이 바람직하다. 이때 악취가 85%이상 해소된다.In the case of chicken manure, it has the lowest calorific value among livestock manure, with a lower calorific value of only 1,200 to 1.900 kcal. In addition, there is a problem that livestock farms must separately provide a manure storage tank to treat manure. In order to solve these problems of calorific value and economy, it is preferable to install a livestock meal transfer device at the bottom of the chicken coop and directly feed them into the composter together with the coffee waste pellets when moving directly to the composter. At this time, more than 85% of the odor is eliminated.

Claims (4)

삭제delete 수거된 커피박을 사용하여 커피박 1 : 곡물가루 0.1~ 0.2 중량비로 함수율 15~20%의 커피박 펠릿을 제조하는 단계 (S10);
상기 커피박 펠릿에 우분, 돈분, 계분 등의 분뇨 중 선택된 어느 하나 이상의 축분을 사용하여 커피박 펠릿 1 : 분뇨 2~4 중량비로 콤포스터에 투입하여 혼합, 분쇄 및 고속발효과정을 거쳐 함수율이 10~20%의 미립 축분 파우더로 가공하는 미립 축분 파우더 제조단계(S20);
상기 미립 축분 파우더 1: 커피박 3~4 중량비를 혼합하여 함수율 10~15%로 성형된 축분연료 펠릿을 제조하는 축분연료 펠릿 성형단계(S30);
상기 성형된 펠릿의 파우더 잔여물을 제거하여 선별하고 포장하는 단계(S40)를 포함하는 것을 특징으로 하는 축분연료제조방법
Preparing coffee ground pellets having a moisture content of 15 to 20% at a weight ratio of coffee waste 1: grain powder of 0.1 to 0.2 using the collected coffee waste (S10);
Coffee ground pellets 1: Manure 2 to 4 weight ratio of coffee ground pellets using one or more animal manure selected from manure such as cow manure, pig manure, chicken manure, etc., in the coffee ground pellets, and mixed, pulverized, and high-speed fermentation process to obtain a moisture content of 10 A step of manufacturing fine-grained livestock powder processing into ~20% of fine-grained livestock powder (S20);
A livestock meal fuel pellet forming step (S30) of manufacturing livestock meal fuel pellets molded with a water content of 10 to 15% by mixing the particulate livestock meal powder 1:3 to 4 coffee grounds by weight;
A method for producing livestock manure fuel comprising the step of removing, sorting and packaging powder residues of the molded pellets (S40).
제2항에 있어서,
상기 커피박 펠릿을 우사에 깔개로 사용하여 축분파우더로 제조하는 것을 특징으로 하는 축분연료제조방법.
According to claim 2,
A method for producing livestock meal fuel, characterized in that for producing livestock meal powder by using the coffee waste pellets as a litter in a cowshed.
제2항에 있어서,
연료 발열량을 높이기 위해서 커피박 펠릿 : 축분 혼합 시에 커피박 펠릿의 비율을 점차 높여나가면서 조절하는 것을 특징으로 축분연료제조방법.
According to claim 2,
Coffee waste pellets to increase fuel calorific value: A method for producing livestock meal fuel, characterized in that the ratio of coffee waste pellets is gradually increased and adjusted when mixing livestock meal.
KR1020220161675A 2022-11-28 2022-11-28 Manufacturing method of Livestock manure fuel KR102499500B1 (en)

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Publication number Priority date Publication date Assignee Title
JP2009148304A (en) * 2009-04-10 2009-07-09 Pokka Corp Method for manufacturing litter for raising livestock
KR20150019243A (en) * 2013-08-13 2015-02-25 건국대학교 산학협력단 Method for preparing high density pellet or block using waste including coffee waste
KR20150032500A (en) * 2013-09-17 2015-03-26 건국대학교 산학협력단 Bio solid fuel comprising coffee grounds and method for preparing the same
KR102155762B1 (en) * 2019-05-23 2020-09-16 정채규 Ecological solid fuel and process for preparing the same
KR102307107B1 (en) * 2021-05-20 2021-09-29 김시균 Dry-Processing Apparatus of Livestock Manure

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009148304A (en) * 2009-04-10 2009-07-09 Pokka Corp Method for manufacturing litter for raising livestock
KR20150019243A (en) * 2013-08-13 2015-02-25 건국대학교 산학협력단 Method for preparing high density pellet or block using waste including coffee waste
KR20150032500A (en) * 2013-09-17 2015-03-26 건국대학교 산학협력단 Bio solid fuel comprising coffee grounds and method for preparing the same
KR102155762B1 (en) * 2019-05-23 2020-09-16 정채규 Ecological solid fuel and process for preparing the same
KR102307107B1 (en) * 2021-05-20 2021-09-29 김시균 Dry-Processing Apparatus of Livestock Manure

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