KR101955874B1 - Method of manufacturing shaped biofuel using coffee sludge and it made thereby - Google Patents
Method of manufacturing shaped biofuel using coffee sludge and it made thereby Download PDFInfo
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- KR101955874B1 KR101955874B1 KR1020170134293A KR20170134293A KR101955874B1 KR 101955874 B1 KR101955874 B1 KR 101955874B1 KR 1020170134293 A KR1020170134293 A KR 1020170134293A KR 20170134293 A KR20170134293 A KR 20170134293A KR 101955874 B1 KR101955874 B1 KR 101955874B1
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/40—Solid fuels essentially based on materials of non-mineral origin
- C10L5/44—Solid fuels essentially based on materials of non-mineral origin on vegetable substances
- C10L5/445—Agricultural waste, e.g. corn crops, grass clippings, nut shells or oil pressing residues
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/02—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
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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
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/08—Drying or removing water
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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
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/18—Spraying or sprinkling
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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
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/20—Coating of a fuel as a whole or of a fuel component
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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
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/28—Cutting, disintegrating, shredding or grinding
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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
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/30—Pressing, compressing or compacting
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Abstract
Description
본 발명은 커피 슬러지를 이용한 연료용 펠렛 제조방법 및 이에 의해 제조된 펠렛에 관한 것이다.The present invention relates to a process for producing pellets for fuel using coffee sludge and a pellet produced thereby.
현재, 원두 커피를 가공후 남은 커피 부산물 또는 커피박을 제외한 커피 슬러지를 재활용하여 연료화하는 다양한 기술이 개발되고 있다.Currently, various technologies are being developed to recycle coffee sludge except for coffee by-products or coffee beans after processing coffee beans.
그 일례로, 대한민국 등록특허 제1579115호(등록일자: 2015.12.15., 발명의 명칭: 커피부산물을 이용한 연료용 펠렛 및 그 제조방법)는 (a) 커피부산물 40~45 중량%, 톱밥 15~20 중량%, 참숯 25~30 중량%, 및 파라핀 5~10 중량%를 혼합하는 단계; 및 (b) 혼합물을 평판다이, 가압로울러 및 배출구를 포함하는 성형장치를 이용하여 2.0~2.5m/s의 저속 운전을 통해 펠릿으로 성형하는 단계;를 포함하는 커피부산물을 이용한 연료용 펠릿의 제조방법이 개시되어 있다.For example, Korean Patent No. 1579115 (filed on Dec. 15, 2015, entitled "Fuel Pellets Using Coffee By-Products and Method for Producing the Same") comprises (a) 40 to 45% by weight of coffee by- 20 to 30% by weight of charcoal, and 5 to 10% by weight of paraffin; And (b) molding the mixture into pellets at a low speed operation of 2.0 to 2.5 m / s using a molding machine including a flat die, a pressure roller and an outlet, Method is disclosed.
이러한 종래 기술은, 커피부산물을 일부 함유할 뿐 국립산림과학원 고시 제2009-2호에 따른 1급 목재펠릿의 품질기준을 만족하는 것에 불과하고, 현재 사료용으로 구분되는 커피박이 함유되는 근원적인 문제점이 있었다.These prior arts only contain a part of coffee byproducts and satisfy only the quality standard of grade 1 wood pellets according to the National Forestry and Forestry Administration Notice No. 2009-2 and have a fundamental problem of containing coffee beans there was.
또한, 대한민국 공개특허 제10-2017-0089748호(공개일자: 2017.8.4., 발명의 명칭: 식물성 오일 부산물을 이용한 화력발전소 및 제철소용 고발열량 바이오매스 성형원료 및 이의 제조방법)는 바이오매스를 분쇄하는 단계, 상기 바이오매스를 분쇄하는 단계 후에 식물성 오일 부산물을 공급하는 식물성 오일 부산물 공급단계, 상기 식물성 오일 부산물 공급단계 후에 분쇄된 상기 바이오매스와 식물성 오일 부산물을 가온교반하는 단계, 상기 가온교반하는 단계 후에 상기 식물성 오일 부산물과 상기 바이오매스를 건조 및 안정화하는 단계, 그리고 상기 건조 및 안정화하는 단계 후에 상기 식물성 오일 부산물과 상기 바이오매스를 압착성형하는 단계, 를 포함하는 화력발전소 및 제철소용 고발열량 바이오매스 성형연료의 제조방법이 개시되어 있다.Korean Patent Laid-Open No. 10-2017-0089748 (Publication Date: Jul. 8, 2017, entitled: High-yielding biomass molding raw material for thermal power plant and steel mill using vegetable oil by-product and method for producing the same) A step of pulverizing the biomass, a step of supplying a vegetable oil by-product to supply the vegetable oil by-product after the step of pulverizing the biomass, the step of heating and stirring the biomass and the vegetable oil by-product pulverized after the step of supplying the vegetable oil by- Drying and stabilizing the vegetable oil byproduct and the biomass after the step of drying and stabilizing the vegetable oil byproduct and the biomass; and compressing and molding the vegetable oil byproduct and the biomass after the drying and stabilizing step, A method of producing a mass-formed fuel is disclosed.
이러한 종래 기술은, 저위발열량 기준 4,500 내지 9,900 kcal/kg의 범위의 식물성 오일 부산물을 바이오매스에 1 내지 30중량%의 범위로 혼합, 성형함에 따라 4,000 내지 6,000 kcal/kg 범위의 석탄과 유사한 화력발전소 및 제철소에서 연료, 환원제 및 승열제로 사용이 가능이 가능하다고 주장하는 반면, 강력해진 환경법에 의해 커피박을 제외한 커피슬러지만이 원료로서 인정되는 근원적인 문제점이 있었다.This prior art technique is based on the fact that by mixing vegetable oil byproducts in the range of 4,500 to 9,900 kcal / kg on the basis of low calorific value in the range of 1 to 30% by weight in the biomass, And steel mills can be used as fuel, reducing agent, and heat transfer agent. However, there is a fundamental problem that only the coffee sludge except for the coffee ground is recognized as a raw material by the enforced environmental law.
상기와 같은 문제점을 해결하고자 창출된 본 발명의 목적은, 커피 슬러지 또는 커피 슬러지와 미소량의 밀가루만으로 펠릿을 대량 제조할 수 있는 커피 슬러지를 이용한 연료용 펠렛 제조방법 및 이에 의해 제조된 펠렛을 제공하는 데 있다.It is an object of the present invention, which is created to solve the above-mentioned problems, to provide a method for manufacturing a fuel pellet using coffee sludge or coffee sludge and a coffee sludge capable of mass production of pellets using only a small amount of flour and a pellet produced thereby I have to.
이러한 본 발명의 목적은, (a) 커피박을 포함하지 않는 커피 슬러지를 건조하는 단계와; (b) 상기 커피 슬러지를 압착하여 수득된 액체를 유수 분리한 후 여과된 커피 슬러지 압착유를 저장하는 단계와; (c) 압착된 상기 커피 슬러지를 분쇄하여 커피 슬러지 분말을 만드는 단계와; (d) 상기 커피 슬러지 분말의 일부를 제 1 금형 내에 충전한 후 가압하여 복수 개의 구체를 성형하고, 제 2 금형의 내부에 커피 슬러지 분말과 밀가루가 번갈아 충전되고 최상층은 커피 슬러지 분말과 충전된 후 최상층의 커피 슬러지 분말을 가압하여 봉형 성형물을 제작하는 단계와; (e) 상기 커피 슬러지 분말, 상기 봉형 성형물 및 상기 구체를 혼합하여 펠렛 금형에 충전한 후 가압하여 펠렛을 제조하는 단계와; (f) 상기 펠렛의 표면에 상기 커피 슬러지 압착유를 분사하여 코팅한 다음 방습 포대에 충전하여 포장하는 단계로 이루어진 커피 슬러지를 이용한 연료용 펠렛 제조방법에 의해 달성될 수 있다.This object of the present invention is achieved by a process for the production of a coffee sludge comprising: (a) drying a coffee sludge not containing a coffee bean; (b) squeezing the coffee sludge and subjecting the obtained liquid to water separation, and then storing the filtered coffee sludge pressed oil; (c) milling the squeezed coffee sludge to form a coffee sludge powder; (d) filling a portion of the coffee sludge powder into a first mold and pressurizing to form a plurality of spheres, wherein the coffee sludge powder and flour are alternately filled in the second mold and the top layer is filled with the coffee sludge powder Pressurizing the coffee sludge powder of the uppermost layer to produce a bar mold; (e) mixing the coffee sludge powder, the bar-shaped body and the spheres to fill the pellet mold and pressurizing to produce pellets; (f) spraying the coffee sludge pressurized oil onto the surface of the pellet to coat the pellet, filling the pellet in a moisture-proof bag, and packaging the coffee pellet.
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바람직하게는, 본 발명의 상기 (a)의 커피 슬러지는 함수율 7 ~ 14%까지 건조되고, 상기 (b)단계의 커피 슬러지는 다수의 압착 롤러를 연속적으로 통과시켜 압착하고, 상기 (e)단계의 구체 표면에는 밀가루가 묻혀져 있으며, 상기 밀가루는 상기 구체 100 중량부에 1 ~ 2 중량부이고, 상기 (f)단계의 커피 슬러지 압착유는 상기 (e)단계의 펠렛 100 중량부에 대하여 0.01 ~ 1.5 중량부인 것을 특징으로 한다.Preferably, the coffee sludge of (a) of the present invention is dried to a moisture content of 7 to 14%, the coffee sludge of the step (b) is continuously passed through a plurality of squeeze rollers, And the flour is 1 to 2 parts by weight per 100 parts by weight of the sphere, and the coffee sludge pressed oil in the step (f) is 0.01 to 100 parts by weight per 100 parts by weight of the pellet of the step (e) 1.5 parts by weight.
바람직하게는, 본 발명의 상기 (d)단계의 구체는 커피 슬러지 분말을 상기 1 금형 내에 충전한 후 30 ~ 45℃에서 3 ~ 50㎏f/㎠의 압력으로 가압하여 직경 1.0 ~ 1.5㎜의 복수 개 성형하고, 상기 (d)단계는 봉형 성형물은 커피 슬러지 분말을 상기 제 2 금형의 내부에 커피 슬러지 분말과 밀가루가 번갈아 충전되고 최상층은 커피 슬러지 분말과 충전된 후 최상층의 커피 슬러지 분말을 30 ~ 45℃에서 3 ~ 50㎏f/㎠의 압력으로 가압하여 길이 100mm, 직경 10 ~ 15mm의 봉형 성형물을 제작하는 것을 특징으로 한다.Preferably, in the step (d) of the present invention, the coffee sludge powder is charged into the one mold and pressurized at 30 to 45 ° C under a pressure of 3 to 50 kgf / (D), wherein the bar-shaped molding is filled with the coffee sludge powder and the flour alternately in the second mold, and the uppermost layer is filled with the coffee sludge powder, and then the uppermost coffee sludge powder is filled with the coffee sludge powder, At a temperature of 45 ° C under a pressure of 3 to 50 kgf / cm 2 to produce a bar-shaped molding having a length of 100 mm and a diameter of 10 to 15 mm.
바람직하게는, 본 발명의 상기 구체는 커피 슬러지 분말 100 중량부에 대하여 0.5 ~ 10 중량부이고, 상기 봉형 성형물은 커피 슬러지 분말 100 중량부에 대하여 1 ~ 25 중량부인 것을 특징으로 한다.Preferably, the sphere of the present invention is used in an amount of 0.5 to 10 parts by weight based on 100 parts by weight of the coffee sludge powder, and the bar mold is 1 to 25 parts by weight based on 100 parts by weight of the coffee sludge powder.
또한, 본 발명의 다른 목적은 위의 방법들 중 어느 한 방법에 의해 제조된 펠렛에 의해 달성될 수 있다.In addition, another object of the present invention can be achieved by a pellet produced by any one of the above methods.
이상과 같은 본 발명은 커피 슬러지만으로 또는 커피 슬러지와 미소량의 밀가루만으로 고열량의 펠렛을 대량 생산할 수 있는 효과가 있다. 또한, 발명은 펠렛의 표면에 커피 슬러지 압착유를 분사하여 보관이나 저장시 흡습을 방지하고 연소시 코팅되지 않은 펠렛 대비 300 ~ 650kcal/kg가 높은 효과가 있다.The present invention has the effect of mass-producing pellets of high calorific value with only coffee sludge or coffee sludge and a small amount of flour. In addition, the invention prevents moisture absorption during storage or storage by spraying pressurized oil of coffee sludge onto the surface of the pellet, and has a high effect of 300 to 650 kcal / kg compared to uncoated pellets during combustion.
이하, 본 발명의 실시예를 참조하여 설명하기로 한다.Hereinafter, embodiments of the present invention will be described.
(1) 커피 슬러지 건조하기(1) Drying of coffee sludge
본 실시예에 적용되는 커피 슬러지는 커피박은 포함되지 않는 것임을 미리 밝혀둔다. 여기서, 커피박을 포함하지 않는 이유는 대한민국 환경법상 바이오매스 원료에 해당되지 않고 분쇄 및 성형이 용이하지 않음은 물론 열량이 낮기 때문이다.It is to be noted in advance that the coffee sludge applied to this embodiment does not include coffee beans. The reasons for not including coffee beans are that it is not a biomass raw material under the Korean Environment Law, and it is not easy to crush and form, and the calorie is low.
본 실시예에 사용되는 커피 슬러지는 함수율이 40 ~ 60%이며 분말과 덩어리가 혼재되어 있다. 먼저, 커피 슬러지를 이동식 열풍 건조기를 통과시켜 함수율 7 ~ 14%로 건조한다.The coffee sludge used in this embodiment has a water content of 40 to 60% and contains powder and lumps. First, the coffee sludge is passed through a moving hot air dryer to dry at a water content of 7 to 14%.
여기서, 건조된 커피 슬러지의 함수율이 6% 미만인 경우에는 추후 진행되는 압착 공정이 원활하지 못한 문제점이 발생된다.If the moisture content of the dried coffee sludge is less than 6%, the subsequent pressing process may not be smooth.
(2) 건조된 커피 슬러지 압착(2) squeeze dried coffee sludge
함수율 7 ~ 14%의 커피 슬러지를 복수 개의 압착 롤러를 통과시켜 연속적으로 압착한다. 이때, 압착 롤러의 압력은 350 ~ 2,000㎏f/㎠ 정도가 바람직하다.The coffee sludge having a moisture content of 7 to 14% is continuously compressed through a plurality of pressing rollers. At this time, the pressure of the pressing roller is preferably about 350 to 2,000 kgf / cm2.
또한, 커피 슬러지의 압착을 통해 수득된 액체를 유수 분리하여 액상의 기름 성분을 여과하여 저장한다. 여기서, 여과된 기름 성분을 "커피 슬러지 압착유"라 명명한다.Further, the liquid obtained through the squeezing of the coffee sludge is subjected to oil-water separation, and the liquid oil component is filtered and stored. Here, the filtered oil component is referred to as "coffee sludge compacted oil ".
(3) 커피 슬러지 분쇄 및 예비 성형(3) crushing and preforming of coffee sludge
압착된 커피 슬러지를 직경 0.01 ~ 0.5㎜ 갖도록 분쇄하여 커피 슬러지 분말을 만들다.Crushed coffee sludge is pulverized to a diameter of 0.01 to 0.5 mm to prepare a coffee sludge powder.
그런 다음, 커피 슬러지 분말의 일부를 금형 내에 충전한 후 30 ~ 45℃에서 3 ~ 50㎏f/㎠의 압력으로 가압하여 직경 1.0 ~ 1.5㎜의 복수 개의 구체(球體)를 성형한다.Then, a part of the coffee sludge powder is charged into a mold and pressed at 30 to 45 DEG C under a pressure of 3 to 50 kgf / cm < 2 > to form a plurality of spheres having a diameter of 1.0 to 1.5 mm.
또한, 봉형 성형물을 제작한다.Further, a bar-shaped molding is produced.
봉형 성형물은 금형의 내부에 커피 슬러지 분말과 밀가루가 번갈아 충전되고 최상층은 커피 슬러지 분말과 충전된 후 최상층의 커피 슬러지 분말을 30 ~ 45℃에서 3 ~ 50㎏f/㎠의 압력으로 가압하여 길이 100mm, 직경 10 ~ 15mm의 봉형 성형물을 제작한다. 여기서, 밀가루는 봉형 성형물 100 중량부에 대하여 5 ~ 9 중량부가 되어야 한다. 만약, 밀가루가 4 중량부 이하인 경우에는 바인더 역활을 하지 못하고, 10 중량부 이상인 경우에는 압축이 바람직하게 구현되지 않아 파단되는 문제점이 발생된다.In the bar mold, the coffee sludge powder and flour are alternately filled in the mold and the top layer is filled with the coffee sludge powder, and then the uppermost coffee sludge powder is pressurized at 30 to 45 ° C at a pressure of 3 to 50 kgf / , And 10 to 15 mm in diameter. Here, the flour should be added in an amount of 5 to 9 parts by weight based on 100 parts by weight of the bar mold. If the flour is not more than 4 parts by weight, it can not serve as a binder. If the flour is more than 10 parts by weight, compression is not realized.
(4) 성형 및 절단(4) Forming and cutting
커피 슬러지 분말, 구체 및 봉형 성형물을 펠렛 금형에 충전한 후 5 ~ 100㎏f/㎠ 압력으로 가압하여 직경 4 ~ 10㎜로 압출하되 5 ~ 10㎜ 길이로 절단하여 펠렛을 제조한다.The sludge powder, the sphere and the bar mold are charged into a pellet mold, and then pressed at a pressure of 5 to 100 kgf / cm 2, extruded to a diameter of 4 to 10 mm, and cut to a length of 5 to 10 mm to produce pellets.
구체는 커피 슬러지 분말 100 중량부에 대하여 0.5 ~ 10 중량부이다.The sphere is 0.5 to 10 parts by weight based on 100 parts by weight of the coffee sludge powder.
여기서, 커피 슬러지 분말과 구체가 상호 잘 뭉쳐지게 하기 위하여 구체의 표면에 바인더 기능을 하는 밀가루를 묻혀 사용할 수도 있다. 이때, 밀가루는 구체의 100 중량부에 1 ~ 2 중량부이다.Here, in order to make the coffee sludge powder and the sphere coalesce well, the surface of the sphere may be used by putting a flour serving as a binder into the surface thereof. The flour is 1-2 parts by weight per 100 parts by weight of the sphere.
밀가루가 0.7 중량부 미만인 경우에는 바인더 기능을 수행하지 못하고, 3 중량부 이상인 경우에는 탄화되어 성형된 펠렛이 부셔지는 문제점이 발생한다.When the flour is less than 0.7 part by weight, the binder function can not be performed. When the flour is more than 3 parts by weight, the molded pellet is broken.
또한, 구체를 포함하지 않고 커피 슬러지 분말만을 사용하는 경우에는 성형 공정시 불량율이 15 ~ 25% 정도 발생되고 3개월 이상 보관시 부분적으로 펠렛이 부셔지는 근원적인 문제점이 발생된다. 성형이 잘 이루어지지 않아 보관시 펠렛이 부셔지는 문제점을 해소하기 위하여 압력을 더 높히면, 펠렛이 탄화되어 성형이 더 어렵게 되고 심지어는 발화되기도 한다.In addition, when only the coffee sludge powder is used without sphere, a defective ratio is generated in the molding process of about 15 to 25%, and when stored for 3 months or more, the pellet is partially broken. Higher pressures to overcome the problem of poor pelletization during storage due to poor moldability can lead to carbonization of the pellets, making them more difficult to form and even igniting.
봉형 성형물은 커피 슬러지 분말 100 중량부에 대하여 1 ~ 25 중량부이다. 여기서, 봉형 성형물이 30 중량부 이상인 경우에는 압출이 바람직하게 구현되지 않는 단점이 발생된다.The bar-shaped product is 1 to 25 parts by weight based on 100 parts by weight of the coffee sludge powder. Here, when the rod-like molded product is 30 parts by weight or more, there is a disadvantage that extrusion is not preferably implemented.
(5) 코팅, 건조 및 포장(5) coating, drying and packaging
저장된 커피 슬러지 압착유를 펠렛의 표면에 분사하여 코팅한 다음 방습 포대에 충전하여 포장한다. 이때, 코팅되는 커피 슬러지 압착유는 펠렛 100 중량부에 대하여 0.01 ~ 1.5 중량부이다.The stored coffee sludge compressed oil is sprayed on the surface of the pellet and coated, then packed and packed in a moisture proof bag. At this time, the coffee sludge pressed oil to be coated is 0.01 to 1.5 parts by weight based on 100 parts by weight of the pellets.
여기서, 절단된 펠렛에 커피 슬러지 압착유를 분사하여 코팅하는 이유는 보관이나 저장시 흡습을 방지하고 연소시 코팅되지 않은 펠렛 대비 300 ~ 650kcal/kg가 높은 장점이 있기 때문이다.The reason for coating the cut pellets with the squeezed oil of coffee sludge is that it prevents moisture absorption during storage and storage and has a high advantage of 300 to 650 kcal / kg compared to uncoated pellets during combustion.
본 example 실시예의Example 펠렛Pellets 연료 분석결과 Fuel analysis results
"비소, 납, 크롬, 카드뮴, 수은"과 같은 중금속은 비검출되었으며 저위발열량은 4,704kcal/kg로써 바이오매스 원료로서 활용가치가 높은 것으로 판명되었다.Heavy metals such as arsenic, lead, chromium, cadmium, and mercury were not detected and the calorific value of 4,704 kcal / kg was found to be high value as biomass feedstock.
이상과 같은 본 발명은 일 실시예에 한정되어 설명되었으나, 이에 한정되지 않고 본 발명의 기술적 사상을 토대로 변형되는 실시예들은 모두 본 발명의 권리범위에 속함이 분명하다.While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.
Claims (7)
(b) 상기 커피 슬러지를 압착하여 수득된 액체를 유수 분리한 후 여과된 커피 슬러지 압착유를 저장하는 단계와;
(c) 압착된 상기 커피 슬러지를 분쇄하여 커피 슬러지 분말을 만드는 단계와;
(d) 상기 커피 슬러지 분말의 일부를 제 1 금형 내에 충전한 후 가압하여 복수 개의 구체를 성형하고, 제 2 금형의 내부에 커피 슬러지 분말과 밀가루가 번갈아 충전되고 최상층은 커피 슬러지 분말과 충전된 후 최상층의 커피 슬러지 분말을 가압하여 봉형 성형물을 제작하는 단계와;
(e) 상기 커피 슬러지 분말, 상기 봉형 성형물 및 상기 구체를 혼합하여 펠렛 금형에 충전한 후 가압하여 펠렛을 제조하는 단계와;
(f) 상기 펠렛의 표면에 상기 커피 슬러지 압착유를 분사하여 코팅한 다음 방습 포대에 충전하여 포장하는 단계로 이루어진 커피 슬러지를 이용한 연료용 펠렛 제조방법.
(a) drying a coffee sludge not containing a coffee bean;
(b) squeezing the coffee sludge and subjecting the obtained liquid to water separation, and then storing the filtered coffee sludge pressed oil;
(c) milling the squeezed coffee sludge to form a coffee sludge powder;
(d) filling a portion of the coffee sludge powder into a first mold and pressurizing to form a plurality of spheres, wherein coffee sludge powder and flour are alternately filled in the second mold and the top layer is filled with coffee sludge powder Pressurizing the coffee sludge powder of the uppermost layer to produce a bar mold;
(e) mixing the coffee sludge powder, the bar-shaped body and the spheres to fill the pellet mold and pressurizing to produce pellets;
(f) spraying the coffee sludge pressurized oil onto the surface of the pellet to coat the pellet, filling the pellet in a moisture-proof bag, and packaging the coffee sludge.
상기 (a)의 커피 슬러지는 함수율 7 ~ 14%까지 건조되고,
상기 (b)단계의 커피 슬러지는 다수의 압착 롤러를 연속적으로 통과시켜 압착하고,
상기 (e)단계의 구체 표면에는 밀가루가 묻혀져 있으며, 상기 밀가루는 상기 구체 100 중량부에 1 ~ 2 중량부이고,
상기 (f)단계의 커피 슬러지 압착유는 상기 (e)단계의 펠렛 100 중량부에 대하여 0.01 ~ 1.5 중량부인 것을 특징으로 하는 커피 슬러지를 이용한 연료용 펠렛 제조방법.
The method of claim 3,
The coffee sludge of (a) is dried to a water content of 7 to 14%
The coffee sludge of the step (b) is continuously passed through a plurality of squeeze rollers,
In the step (e), flour is embedded in the surface of the flour, and the flour is added in an amount of 1 to 2 parts by weight per 100 parts by weight of the flour,
Wherein the coffee sludge pressed oil in step (f) is 0.01 to 1.5 parts by weight based on 100 parts by weight of the pellets of step (e).
상기 (d)단계의 구체는 커피 슬러지 분말을 상기 1 금형 내에 충전한 후 30 ~ 45℃에서 3 ~ 50㎏f/㎠의 압력으로 가압하여 직경 1.0 ~ 1.5㎜의 복수 개 성형하고,
상기 (d)단계는 봉형 성형물은 커피 슬러지 분말을 상기 제 2 금형의 내부에 커피 슬러지 분말과 밀가루가 번갈아 충전되고 최상층은 커피 슬러지 분말과 충전된 후 최상층의 커피 슬러지 분말을 30 ~ 45℃에서 3 ~ 50㎏f/㎠의 압력으로 가압하여 길이 100mm, 직경 10 ~ 15mm의 봉형 성형물을 제작하는 것을 특징으로 하는 커피 슬러지를 이용한 연료용 펠렛 제조방법.
The method of claim 3,
The sludge of the step (d) is prepared by filling the one sintered coffee sludge powder into a mold and pressurizing the sludge at 30 to 45 ° C under a pressure of 3 to 50 kgf / cm 2 to form a plurality of sludges having a diameter of 1.0 to 1.5 mm,
In the step (d), the coffee sludge powder is filled with coffee sludge powder and wheat flour alternately in the second mold, and the uppermost layer is filled with the coffee sludge powder, and then the uppermost coffee sludge powder is heated at 30 to 45 ° C for 3 And pressurizing at a pressure of 50 kgf / cm < 2 > to produce a rod-shaped product having a length of 100 mm and a diameter of 10 to 15 mm.
상기 구체는 커피 슬러지 분말 100 중량부에 대하여 0.5 ~ 10 중량부이고, 상기 봉형 성형물은 커피 슬러지 분말 100 중량부에 대하여 1 ~ 25 중량부인 것을 특징으로 하는 커피 슬러지를 이용한 연료용 펠렛 제조방법.
The method of claim 3,
Wherein the sphere is used in an amount of 0.5 to 10 parts by weight based on 100 parts by weight of the coffee sludge powder and 1 to 25 parts by weight based on 100 parts by weight of the coffee sludge powder.
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