KR20200072939A - Binder for coal briquette, coal briquette comprising the same and manufacturing method of coal briquette using the same - Google Patents
Binder for coal briquette, coal briquette comprising the same and manufacturing method of coal briquette using the same Download PDFInfo
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- KR20200072939A KR20200072939A KR1020180161070A KR20180161070A KR20200072939A KR 20200072939 A KR20200072939 A KR 20200072939A KR 1020180161070 A KR1020180161070 A KR 1020180161070A KR 20180161070 A KR20180161070 A KR 20180161070A KR 20200072939 A KR20200072939 A KR 20200072939A
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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
- C10L5/06—Methods of shaping, e.g. pelletizing or briquetting
- C10L5/10—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders
- C10L5/14—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders with organic binders
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/02—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of cellulose-containing material
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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
Abstract
Description
본 발명은 성형탄용 바인더 및 이를 이용한 성형탄의 제조방법 등에 관한 것으로서, 더 상세하게는 성형탄의 일 구성성분으로 첨가되어 성형탄의 압축강도 및 낙하강도를 향상시킬 수 있는 바인더, 이를 포함하는 성형탄 및 이를 이용하여 성형탄을 제조하는 방법에 관한 것이다.The present invention relates to a binder for coal briquettes and a method for manufacturing coal briquettes using the same, and more specifically, a binder that is added as a component of coal briquettes to improve the compressive strength and drop strength of coal briquettes, and coal briquettes containing the same It relates to a method for manufacturing a coal briquette.
일반적으로 고로용 코크스의 제조를 위하여 이용되는 원료탄은 생산지에서 최종 소비지까지 이송되는 과정에서 외부환경의 요인에 의하여 상당량의 분진이 발생하는데, 분진 발생을 억제하기 위하여 수분을 도포하여야 하고, 또 야드(Yard)에 노출되어 보관되는 과정에서 건기 내지 우기 등의 환경적인 요인에 의해 원료탄은 그 내부에 상당한 양의 수분이 함유된다.In general, the raw coal used for the production of coke for blast furnaces generates a considerable amount of dust due to factors of the external environment in the process of being transported from the production site to the final consumption site, and water must be applied to suppress the generation of dust. In the process of being exposed to Yard), raw coals contain a considerable amount of moisture in them due to environmental factors such as dry season or rainy season.
통상적으로 코크스 제조용 원료탄은 함유된 수분을 감소 내지 건조시킴으로써 코크스로 내의 장입밀도를 증가시켜 코크스의 강도 향상을 도모할 뿐 아니라 건류시간을 단축시켜 코크스의 생산성 향상을 도모하고 있다. 상기한 바와 같이 코크스의 강도 향상 및 생산성 향상을 위하여 8 내지 12% 정도의 수분을 포함하는 원료탄은 CMCP(Coal Moisture Control Process)라는 설비를 통하여 5 내지 6% 정도의 수분함량으로 저감 내지 건조되어 코크스의 제조에 이용되고 있으나, 이러한 수분함량의 저감 내지 건조를 위한 처리과정에서 상당한 양의 미분탄(Dust coal)이 발생되어 작업환경의 악화와 하천 및 해양의 수질오염에 문제를 일으키고 있을 뿐 아니라, 미분탄의 발생은 원료탄(석탄)의 손실로 이어지며, 이로 인한 원료탄(석탄)의 손실은 시간당 수십 톤에 달하고 있으므로 발생된 미분탄의 적절한 재활용을 도모하기 위한 기술개발에 많은 연구가 진행되고 있다.In order to increase the strength of coke by increasing the loading density in the coke oven by reducing or drying the moisture contained in the coking coal, the raw coal for manufacturing coke is generally improving the productivity of coke by shortening the drying time. As described above, to improve the strength and productivity of coke, raw coal containing 8 to 12% of moisture is reduced or dried to a moisture content of about 5 to 6% through a facility called a Coal Moisture Control Process (CMCP) to coke. It is used in the manufacture of, but in the process of reducing or drying the moisture content, a considerable amount of dust coal is generated, which causes problems in deterioration of the working environment and water pollution in rivers and oceans. Occurrence of lead to the loss of raw coal (coal), and the resulting loss of raw coal (coal) reaches several tens of tons per hour, so many studies have been conducted in the development of technology to promote proper recycling of the generated pulverized coal.
상기 미분탄의 대표적인 재활용 기술로는 미분탄을 바인더 등과 혼합한 후 압축성형 하여 성형탄을 제조하는 방법이 있다. 미분탄으로부터 성형탄을 제조할 때 바인더로는 주로 당밀 또는 전분이 사용되는데, 이 경우 성형성이 양호하지 않고 원하는 강도를 얻기가 어려운 문제가 있다. 이를 해결하기 위한 선행기술을 살펴보면, 예를 들어 대한민국 등록특허공보 제10-1418063호에는 미분탄 100 중량부에 대해 1~5 중량부의 경화제(생석회)와 5~15 중량부의 바인더(당밀 또는 전분)를 혼합한 후 성형하여 성형탄을 제조하는 방법이 개시되어 있다. 또한, 대한민국 등록특허 제10-1674890호에는 미분탄, 탄소 섬유, 및 바인더(당밀 또는 전분)를 혼합한 후 성형하여 성형탄을 제조하는 방법이 개시되어 있다. 또한, 대한민국 등록특허공보 제10-1634071호에는 미분탄 100 중량부에 대해 3 중량부 내지 15 중량부의 당밀 및 0.05 중량부 내지 0.5 중량부의 포름알데히드, 글루타알데히드 또는 파라포름알데히드를 혼합한 후 성형하여 성형탄을 제조하는 방법이 개시되어 있다. 또한, 대한민국 등록특허공보 제10-1709206호에는 전분, 산 수용액 및 물을 혼합하여 바인더 혼합물을 제조하는 단계; 미분탄 및 상기 바인더 혼합물을 혼합하여 배합탄을 제조하는 단계; 및 상기 배합탄을 성형하여 성형탄을 제조하는 단계를 포함하는 성형탄 제조방법이 개시되어 있다. 또한, 대한민국 등록특허공보 제10-1797738호에는 전분, 리그닌, 산 수용액 및 물을 혼합하여 바인더 혼합물을 제조하는 단계; 미분탄 및 상기 바인더 혼합물을 혼합하여 배합탄을 제조하는 단계; 및 상기 배합탄을 성형하여 성형탄을 제조하는 단계를 포함하는 성형탄 제조방법이 개시되어 있다. 또한, 대한민국 등록특허공보 제10-1031933호에는 (a) 미분탄을 6mm 이하의 입도로 파쇄하는 단계; (b) 상기 파쇄된 미분탄과 미분탄 100중량부 대비 결합제[알파전분(Alpha Starch)과 벤토나이트(Bentonite)로 구성됨] 3 ~ 10중량부를 혼합하는 단계; (c) 상기 혼합된 미분탄과 미분탄 100중량부 대비 물 5 ~ 10중량부를 혼합하는 단계; (d) 상기 혼합된 미분탄을 가압하여 성형탄으로 성형하는 단계; (e) 상기 성형탄을 50 ~ 250℃의 온도에서 0.5 ~ 12시간 동안 건조하는 단계; 및 (f) 상기 건조된 성형탄을 최대 48시간 동안 공냉시키는 단계; 를 포함하는 성형탄의 제조방법이 개시되어 있다. 또한, 대한민국 등록특허공보 제10-1565506호에는 당밀과 물을 혼합하여 혼합물을 제조하는 단계, 상기 혼합물에 산을 첨가하는 단계, 상기 혼합물에 배양균을 첨가하여 상기 혼합물을 발효시키는 단계, 상기 혼합물을 증류시켜서 알코올을 제거하는 단계, 상기 혼합물을 농축시키는 단계, 상기 혼합물을 탈수하는 단계, 및 상기 혼합물을 경사 분리하는 단계를 포함하는 성형탄용 바인더의 제조 방법이 개시되어 있다. 상기 선행기술들은 성형탄의 성형성 및 강도를 향상시키기 위해 바인더로 당밀 또는 전분 이외의 성분을 추가로 요구하고 있고 그로 인해 제조공정의 복잡성, 제조원가의 상승, 인체에 대한 유해성, 작업장의 오염 등과 같은 다양한 문제점이 발생한다.As a typical recycling technique of the pulverized coal, there is a method of mixing the pulverized coal with a binder or the like and then compressing it to produce coal briquettes. When manufacturing coal briquettes from pulverized coal, molasses or starch is mainly used as a binder. In this case, there is a problem that moldability is not good and it is difficult to obtain a desired strength. Looking at the prior art to solve this, for example, Republic of Korea Patent Publication No. 10-1418063, 1 to 5 parts by weight of hardener (quick lime) and 5 to 15 parts by weight of binder (molasses or starch) for 100 parts by weight of pulverized coal A method for producing coal briquettes by mixing and shaping is disclosed. In addition, Korean Patent Registration No. 10-1674890 discloses a method of manufacturing coal briquettes by mixing and pulverizing coal, carbon fiber, and a binder (molasses or starch). In addition, in Korean Patent Publication No. 10-1634071, 3 parts by weight to 15 parts by weight of molasses and 0.05 parts by weight to 0.5 parts by weight of formaldehyde, glutaraldehyde or paraformaldehyde are mixed with 100 parts by weight of pulverized coal and then molded. A method of manufacturing coal briquettes is disclosed. In addition, the Republic of Korea Patent Publication No. 10-1709206 is a mixture of starch, acid aqueous solution and water to prepare a binder mixture; Mixing pulverized coal and the binder mixture to prepare blended coal; And manufacturing a coal briquette by molding the blended coal. In addition, the Republic of Korea Patent Publication No. 10-1797738, a mixture of starch, lignin, aqueous acid solution and water to prepare a binder mixture; Mixing pulverized coal and the binder mixture to prepare blended coal; And manufacturing a coal briquette by molding the blended coal. In addition, Republic of Korea Patent Publication No. 10-1031933, (a) crushing the pulverized coal to a particle size of 6mm or less; (b) mixing 3 to 10 parts by weight of the binder (composed of Alpha Starch and Bentonite) compared to 100 parts by weight of the pulverized pulverized coal and pulverized coal; (c) mixing 5 to 10 parts by weight of water compared to 100 parts by weight of the pulverized coal and pulverized coal; (d) pressing the mixed pulverized coal to form a coal briquette; (e) drying the coal briquettes at a temperature of 50 to 250° C. for 0.5 to 12 hours; And (f) air-cooling the dried coal briquettes for up to 48 hours; Disclosed is a method of manufacturing coal briquettes comprising a. In addition, in the Republic of Korea Patent Publication No. 10-1565506, the step of preparing a mixture by mixing molasses and water, adding an acid to the mixture, adding the culture bacteria to the mixture to ferment the mixture, the mixture Disclosed is a method of manufacturing a binder for coal briquettes comprising distilling to remove alcohol, concentrating the mixture, dehydrating the mixture, and decanting the mixture. The prior arts require additional components other than molasses or starch as a binder to improve the moldability and strength of the coal briquettes, and thus various factors such as complexity of the manufacturing process, increase in manufacturing cost, harmfulness to the human body, and contamination of the workplace, etc. The problem arises.
본 발명은 종래의 기술적 배경하에서 도출된 것으로서, 본 발명의 목적은 인체에 무해하고 성형탄의 성형성, 강도 등을 향상시킬 수 있는 성형탄용 바인더를 제공하는데에 있다. 또한, 본 발명의 목적은 상기 바인더가 첨가된 성형탄 또는 상기 바인더를 이용하여 성형탄을 제조하는 방법을 제공하는데에 있다.The present invention has been derived under a conventional technical background, and an object of the present invention is to provide a binder for coal briquettes that is harmless to the human body and can improve the formability, strength, and the like of coal briquettes. In addition, an object of the present invention is to provide a method for manufacturing a coal briquette using the binder or the coal briquettes to which the binder is added.
상기 목적을 해결하기 위하여, 본 발명의 일 예는 미알파화 전분 및 알파화 전분을 포함하고, 건조 중량을 기준으로 미알파화 전분 대 알파화 전분의 중량비가 99.9:0.1 내지 40:60인 것을 특징으로 하는 성형탄용 바인더를 제공한다.In order to solve the above object, an example of the present invention includes un-alphaized starch and alpha-ized starch, and the weight ratio of un-alpha-ized starch to alpha-ized starch based on dry weight is 99.9:0.1 to 40:60. A binder for coal briquettes is provided.
상기 목적을 해결하기 위하여, 본 발명의 일 예는 미분탄 및 상기 성형탄용 바인더를 포함하고 조성물의 형태를 가지는 성형탄을 제공한다.In order to solve the above object, an example of the present invention provides a coal briquette comprising a pulverized coal and a binder for the coal briquettes and having a composition form.
상기 목적을 해결하기 위하여, 본 발명의 일 예는 미분탄, 상기 성형탄용 바인더 및 물(water)을 혼합하여 배합탄을 제조하는 단계; 및 상기 배합탄을 압축성형하여 성형물을 제조하는 단계를 포함하는 성형탄의 제조방법을 제공한다.In order to solve the above object, an example of the present invention comprises the steps of mixing the pulverized coal, the binder for the coal briquettes, and water to prepare a blended coal; And it provides a method for producing a coal briquettes comprising the step of producing a molding by compression molding the blended coals.
본 발명에 따른 성형탄용 바인더는 인체에 무해하고 성형탄의 성형성 및 강도를 향상시킨다. 또한, 본 발명에 따른 성형탄용 바인더를 사용하여 성형탄을 제조하는 경우 리그닌, 생석회, 산 수용액, 탄소섬유, 광물질, 알코올 등과 같은 별도의 첨가제를 필요로 하지 않기 때문에 작업이 복잡하지 않고 경제성이 개선된다. 또한, 본 발명에 따른 성형탄용 바인더는 당밀을 포함하지 않기 때문에 불쾌한 냄새의 발생 및 작업장의 오염 우려가 없다.The binder for coal briquettes according to the present invention is harmless to the human body and improves the formability and strength of coal briquettes. In addition, in the case of manufacturing coal briquettes using the binder for coal briquettes according to the present invention, since no additional additives such as lignin, quicklime, aqueous acid solution, carbon fiber, mineral, alcohol, etc. are required, the operation is not complicated and the economic efficiency is improved. . In addition, since the binder for coal briquettes according to the present invention does not contain molasses, there is no fear of unpleasant odor and contamination of the workplace.
본 발명의 일 측면은 성형탄 제조에 사용되는 성형탄용 바인더에 관한 것이다.One aspect of the present invention relates to a binder for coal briquettes used in the production of coal briquettes.
본 발명의 일 예에 따른 성형탄용 바인더는 미알파화 전분 및 알파화 전분을 포함한다. 또한, 본 발명의 일 예에 따른 성형탄용 바인더는 바람직하게는 조성물의 형태를 가진다. 또한, 본 발명의 일 예에 따른 성형탄용 바인더는 성형탄의 성형성, 성형탄의 강도 등을 고려할 때 건조 중량을 기준으로 미알파화 전분 대 알파화 전분의 중량비가 99.9:0.1 내지 40:60인 것이 바람직하다. 또한, 본 발명의 일 예에 따른 성형탄용 바인더는 성형탄의 성형성, 성형탄의 강도, 성형탄의 경제성 등을 고려할 때 건조 중량을 기준으로 미알파화 전분 대 알파화 전분의 중량비가 99.5 : 0.5 내지 40:60인 것이 더 바람직하고, 99:1 내지 50:50인 것이 가장 바람직하다. 본 발명의 일 예에 따른 성형탄용 바인더에서 미알파화 전분 함량이 전제 건조 중량을 기준으로 0.1 중량% 미만인 경우 성형탄의 압축강도 및 낙하강도가 통상적으로 요구되는 수준보다 낮아질 염려가 있고, 미알파화 전분 함량이 전제 건조 중량을 기준으로 70 중량%를 초과하면 성형탄의 성형성이 불량하고 성형탄의 제조 원가가 너무 커서 성형탄의 상업성이 문제될 수 있다. 또한, 본 발명의 일 예에 따른 성형탄용 바인더는 수분 함량이 5~15 중량%인 것이 바람직하고 8~13 중량%인 것이 더 바람직하다. 본 발명의 일 예에 따른 성형탄용 바인더의 수분 함량은 미알파화 전분 자체의 수분 함량, 알파화 전분 자체의 수분 함량 및 성형탄용 바인더에 포함되는 미알파화 전분과 알파화 전분의 중량비 등에 의해 결정된다.The binder for coal briquettes according to an embodiment of the present invention includes un-alpha-starch and alpha-starch. In addition, the binder for coal briquettes according to an example of the present invention preferably has the form of a composition. In addition, the binder for coal briquettes according to an example of the present invention has a weight ratio of 99.9:0.1 to 40:60 of un-alpha-ized starch to alpha-starch based on dry weight in consideration of the moldability of the coal briquettes, the strength of the coal briquettes, and the like. desirable. In addition, the binder for coal briquettes according to an embodiment of the present invention has a weight ratio of un-alpha-ized starch to alpha-starch based on dry weight when considering moldability of coal briquettes, strength of coal briquettes, economical efficiency of coal briquettes, etc. 99.5: 0.5 to 40 It is more preferably :60, and most preferably 99:1 to 50:50. In the binder for coal briquettes according to an embodiment of the present invention, when the content of un-alpha-ized starch is less than 0.1% by weight based on the total dry weight, there is a concern that the compressive strength and drop strength of the coal briquettes may be lower than the levels normally required, and the non-alpha If the starch content exceeds 70% by weight based on the total dry weight, the moldability of the coal briquettes is poor and the manufacturing cost of the coal briquettes is too large, which may cause commercial problems of the coal briquettes. In addition, the binder for coal briquettes according to an embodiment of the present invention preferably has a moisture content of 5 to 15% by weight and more preferably 8 to 13% by weight. The moisture content of the binder for the coal briquettes according to an embodiment of the present invention is determined by the moisture content of the un-alpha-ized starch itself, the water content of the alpha-ized starch itself, and the weight ratio of the non-alpha-ized starch and the alpha-ized starch contained in the binder for the coal briquettes do.
본 발명의 일 예에 따른 성형탄용 바인더의 일 구성성분인 미알파화 전분과 알파화 전분의 구체적인 설명은 다음과 같다.A detailed description of the un-aligned starch and the alpha-ized starch, which are components of the binder for the coal briquettes according to an example of the present invention, is as follows.
미알파화Non-alpha 전분 및 Starch and 알파화Alphaization 전분 Starch
본 발명에서 사용되는 용어 "알파화 전분"이란 비변성 전분 또는 변성 전분을 압출기, 드럼 건조기 또는 다른 열처리 등으로 미리 호화시켜 알파화한 전분을 말한다. 상기 비변성 전분은 옥수수 전분, 찰옥수수 전분, 감자 전분, 고구마 전분, 밀 전분, 쌀 전분, 타피오카 전분, 사고 전분(sago starch), 소검 전분(sorghum starch), 고아밀로오스 전분(예를 들어 아밀로오스 함량이 적어도 40 중량% 이상인 전분) 등에서 선택될 수 있다. 상기 변성 전분은 옥수수 전분, 찰옥수수 전분, 감자 전분, 고구마 전분, 밀 전분, 쌀 전분, 타피오카 전분, 사고 전분(sago starch), 소검 전분(sorghum starch), 고아밀로오스 전분(예를 들어 아밀로오스 함량이 적어도 40 중량% 이상인 전분) 등에서 선택되는 비변성 전분을 에스테르화 반응, 에테르화 반응, 가교결합 반응, 에스테르화 반응 및 가교결합 반응 또는 에테르화 반응 및 가교결합 반응시켜 그 구조 및 물리화학적 특성을 변화시킨 전분을 의미한다. 예를 들어, 에스테르화 반응에 의해 변성된 전분으로는 아세트산 전분(Starch Acetate), 인산일 전분(Monostarch Phosphate) 등이 있고, 에테르화 반응에 의해 변성된 전분으로는 하이드록시프로필 전분(Hydroxypropyl Starch) 등이 있고, 가교결합 반응에 의해 변성된 전분으로는 인산이 전분(Distarch Phosphate) 등이 있고, 에스테르화 반응 및 가교결합 반응에 의해 변성된 전분으로는 아세틸아디핀산이 전분(Acetylated Distarch Adipate), 아세틸인산이 전분(Acetylated Distarch Phosphate), 인산화인산이 전분(Phosphated Distarch Phosphate) 등이 있고, 에테르화 반응 및 가교결합 반응에 의해 변성된 전분으로는 하이드록시프로필인산이 전분(Hydroxypropyl Distarch Phosphate) 등이 있다. 본 발명에서 알파화 전분은 성형탄의 성형성, 강도 및 경제성을 고려할 때 옥수수 전분의 알파화 전분인 것이 바람직하다.The term "alpha starch" used in the present invention refers to starch that has been pre-gelatinized by exchanging non-modified starch or modified starch with an extruder, drum dryer, or other heat treatment. The unmodified starch is corn starch, corn starch, potato starch, sweet potato starch, wheat starch, rice starch, tapioca starch, sago starch, sorghum starch, high amylose starch (e.g. amylose content) Starch) of at least 40% by weight or the like. The modified starch is corn starch, corn starch, potato starch, sweet potato starch, wheat starch, rice starch, tapioca starch, sago starch, sorghum starch, high amylose starch (for example, amylose content) Starch of at least 40% by weight or more), such as esterification reaction, etherification reaction, crosslinking reaction, esterification reaction and crosslinking reaction or etherification reaction and crosslinking reaction to change its structural and physicochemical properties It means the starch. For example, starch modified by the esterification reaction includes Starch Acetate, Monarch Arch Phosphate, and starch modified by the etherification reaction is hydroxypropyl starch. And starch modified by a crosslinking reaction. Distarch Phosphate is a starch, and starch modified by an esterification reaction and a crosslinking reaction includes acetyladipic acid starch. Acetylated starch (Acetylated Distarch Phosphate), Phosphated Phosphate Starch (Phosphated Distarch Phosphate), and the like, and starch modified by etherification reaction and crosslinking reaction are hydroxypropyl phosphate starch (Hydroxypropyl Distarch Phosphate). have. In the present invention, the alpha-starch is preferably an alpha-starch starch of corn starch in view of the formability, strength, and economy of the coal briquettes.
본 발명에서 미알파화 전분은 알파화 처리하지 않은 일반 전분(또는 비변성 전분)을 의미한다. 상기 미알파화 전분은 예를 들어 옥수수 전분, 찰옥수수 전분, 감자 전분, 고구마 전분, 밀 전분, 쌀 전분, 타피오카 전분, 사고 전분(sago starch), 소검 전분(sorghum starch), 고아밀로오스 전분(예를 들어 아밀로오스 함량이 적어도 40 중량% 이상인 전분) 등에서 선택될 수 있으며, 이 중 성형탄의 성형성, 강도 및 경제성을 고려할 때 옥수수 전분인 것이 바람직하다.In the present invention, non-alpha-starved starch refers to normal starch (or unmodified starch) that is not alpha-treated. The non-alpha-ized starch is, for example, corn starch, corn starch, potato starch, sweet potato starch, wheat starch, rice starch, tapioca starch, sago starch, sorghum starch, high amylose starch (eg For example, starch having an amylose content of at least 40% by weight or more) may be selected, and among these, it is preferable that corn starch is considered in view of the formability, strength, and economy of the coal briquettes.
본 발명의 일 측면은 성형성, 강도 등이 우수한 성형탄에 관한 것이다.One aspect of the present invention relates to coal briquettes having excellent moldability and strength.
본 발명의 일 예에 따른 성형탄은 미분탄 및 전술한 바인더를 포함하고 조성물의 형태를 갖는다. 본 발명의 일 예에 따른 성형탄에서 미분탄 및 바인더의 함량 관계는 크게 한정되는 않는다. 본 발명의 일 예에 따른 성형탄은 성형성, 강도, 경제성 등을 고려할 때 건조 중량을 기준으로 미분탄 100 중량부에 대하여 바인더 0.5~8 중량부를 포함하는 것이 바람직하고, 건조 중량을 기준으로 미분탄 100 중량부에 대하여 바인더 1~6 중량부를 포함하는 것이 더 바람직하고, 건조 중량을 기준으로 미분탄 100 중량부에 대하여 바인더 1.5~5 중량부를 포함하는 것이 가장 바람직하다.Coal briquettes according to an example of the present invention include pulverized coal and the above-described binder and have a form of a composition. In the coal briquettes according to an embodiment of the present invention, the relationship between the content of the pulverized coal and the binder is not particularly limited. Coal briquettes according to an example of the present invention preferably includes 0.5 to 8 parts by weight of a binder with respect to 100 parts by weight of pulverized coal based on dry weight when considering formability, strength, and economics, and 100 weight of pulverized coal based on dry weight It is more preferable to include 1 to 6 parts by weight of binder with respect to parts, and it is most preferable to include 1.5 to 5 parts by weight of binder with respect to 100 parts by weight of pulverized coal based on dry weight.
본 발명의 일 예에 따른 성형탄의 일 구성성분인 미분탄은 입경이 약 8㎜ 이하, 바람직하게는 5㎜ 이하인 석탄의 분진을 의미한다. 상기 미분탄은 그 종류가 크게 제한되지 않으며 유연탄 분진, 코크스(Cokes) 분진 등에서 선택될 수 있다. 또한, 본 발명에서 사용되는 미분탄은 바인더와의 혼합성, 성형탄의 품질 등을 고려할 때 입경이 약 2㎜ 이하인 것이 바람직하고, 1㎜ 이하인 것이 더 바람직하다. 예를 들어, 본 발명에서 사용되는 미분탄은 입경이 0.01~2㎜인 코크스 분진일 수 있고, 바람직하게는 입경이 0.01~1㎜인 코크스 분진일 수 있으며, 더 바람직하게는 입경이 0.01~0.2㎜인 코크스 분진과 입경이 0.2~1㎜인 코크스 분진의 혼합물일 수 있다.The pulverized coal, which is one component of the coal briquettes according to an example of the present invention, means a dust of coal having a particle size of about 8 mm or less, preferably 5 mm or less. The type of the pulverized coal is not particularly limited, and may be selected from bituminous coal dust, cokes dust, and the like. In addition, the pulverized coal used in the present invention preferably has a particle diameter of about 2 mm or less, more preferably 1 mm or less, in consideration of the mixing property with the binder, the quality of the coal briquettes, and the like. For example, the pulverized coal used in the present invention may be coke dust having a particle diameter of 0.01 to 2 mm, preferably coke dust having a particle diameter of 0.01 to 1 mm, and more preferably 0.01 to 0.2 mm. It may be a mixture of phosphorus coke dust and coke dust having a particle diameter of 0.2 to 1 mm.
본 발명의 일 측면은 성형성, 강도 등이 우수한 성형탄의 제조방법에 관한 것이다.One aspect of the present invention relates to a method of manufacturing coal briquettes having excellent moldability and strength.
본 발명의 일 예에 따른 성형탄의 제조방법은 미분탄, 전술한 바인더 및 물(water)을 혼합하여 배합탄을 제조하는 단계; 및 상기 배합탄을 압축성형하여 성형물을 제조하는 단계를 포함한다. 또한, 본 발명의 일 예에 따른 성형탄의 제조방법은 바람직하게는 상기 성형물을 양생(Curing)하는 단계를 포함할 수 있다. 본 발명에서 양생은 건조와 호환되어 사용될 수 있다.A method of manufacturing coal briquettes according to an embodiment of the present invention comprises the steps of preparing pulverized coal by mixing pulverized coal, the aforementioned binder, and water; And compressing the blended coal to prepare a molded product. In addition, the method for manufacturing coal briquettes according to an embodiment of the present invention may preferably include curing the molded article. In the present invention, curing may be used in combination with drying.
본 발명의 일 예에 따른 성형탄의 제조방법에서 상기 배합탄은 바람직하게는 건조 중량을 기준으로 미분탄 100 중량부에 대하여 바인더 0.5~8 중량부를 포함하고, 더 바람직하게는 건조 중량을 기준으로 미분탄 100 중량부에 대하여 바인더 1~6 중량부를 포함하고, 가장 바람직하게는 건조 중량을 기준으로 미분탄 100 중량부에 대하여 바인더 1.5~5 중량부를 포함한다. 또한, 상기 배합탄의 수분 함량은 원활한 압축성형을 담보하는 범위라면 크게 제한되지 않으며, 예를 들어 10~30 중량%의 범위에서 선택될 수 있고, 15~25 중량%의 범위에서 선택되는 것이 바람직하다. 또한, 본 발명의 일 예에 따른 성형탄의 제조방법 중 상기 배합탄을 제조하는 단계에서 물(water)의 첨가량은 미리 설절된 배합탄의 수분 함량에 맞게 조정될 수 있다.In the method for manufacturing coal briquettes according to an embodiment of the present invention, the blended coal preferably contains 0.5 to 8 parts by weight of binder with respect to 100 parts by weight of pulverized coal based on dry weight, and more preferably 100 pulverized coal based on dry weight It contains 1 to 6 parts by weight of binder with respect to parts by weight, and most preferably contains 1.5 to 5 parts by weight of binder with respect to 100 parts by weight of pulverized coal based on dry weight. In addition, the moisture content of the blended coal is not particularly limited as long as it ensures smooth compression molding, for example, may be selected in the range of 10 to 30% by weight, and preferably selected in the range of 15 to 25% by weight. Do. In addition, in the manufacturing method of the coal briquettes according to an example of the present invention, the amount of water added in the step of manufacturing the coal briquettes may be adjusted according to the moisture content of the coal briquettes previously set forth.
본 발명의 일 예에 따른 성형탄의 제조방법에서 압축성형시 가해지는 압력은 성형을 담보하는 범위라면 크게 제한되지 않으며, 예를 들어 100~400 ㎏f일 수 있고, 150~300 ㎏f일 수 있다.In the manufacturing method of coal briquettes according to an embodiment of the present invention, the pressure applied during compression molding is not particularly limited as long as it is a range that guarantees molding, and may be, for example, 100 to 400 kgf, and 150 to 300 kgf. .
본 발명의 일 예에 따른 성형탄의 제조방법에서 양생(또는 건조) 온도는 크게 제한되지 않으며, 예를 들어 10~150℃에서 선택될 수 있고 20~125℃에서 선택될 수 있다. 또한, 본 발명의 일 예에 따른 성형탄의 제조방법에서 양생(또는 건조) 시간은 크게 제한되지 않으며, 예를 들어 0.5~48 hr에서 선택될 수 있고 1~24 hr 에서 선택될 수 있다.In the method for manufacturing coal briquettes according to an example of the present invention, curing temperature (or drying) temperature is not significantly limited, and may be selected from, for example, 10 to 150°C and 20 to 125°C. In addition, the curing (or drying) time in the method of manufacturing coal briquettes according to an embodiment of the present invention is not significantly limited, for example, may be selected from 0.5 to 48 hr, and may be selected from 1 to 24 hr.
이하, 본 발명을 실시예를 통하여 보다 구체적으로 설명한다. 다만, 하기 실시예는 본 발명의 기술적 특징을 명확하게 예시하기 위한 것일 뿐, 본 발명의 보호범위를 한정하는 것은 아니다.Hereinafter, the present invention will be described in more detail through examples. However, the following examples are only for clearly illustrating the technical features of the present invention, and are not intended to limit the protection scope of the present invention.
1. 바인더 및 1. Binder and 성형탄의Coal briquettes 제조 Produce
제조예 1-1.Production Example 1-1.
입도 80 메쉬(mesh) 및 입도 20 메쉬(mesh)가 50:50의 중량비로 혼합된 코크스 분진(수분 함량 : 0.67 중량%)을 준비하였다. 또한, 일반 옥수수 전분(수분 함량 : 11.98 중량%) 및 알파화 옥수수 파전분(수분 함량 : 9.35 중량%)을 95:5의 중량비로 혼합하여 바인더를 준비하였다. 이후, 코크스 분진 100 중량부에 대하여 바인더 4 중량부 및 물(water) 24.6 중량부를 첨가하고 상온에서 약 3분 동안 균일하게 혼합하여 배합탄을 제조하였다. 이후, 배합탄을 유압 프레스 성형기로 압축성형(압력 : 200 ㎏f)하여 두께가 약 3.0~3.5㎝이고 무게가 약 60g인 성형탄을 제조하였다.Coke dust (moisture content: 0.67% by weight) in which a particle size of 80 mesh and a particle size of 20 mesh were mixed in a weight ratio of 50:50 was prepared. In addition, a binder was prepared by mixing common corn starch (moisture content: 11.98 wt%) and alpha-ized corn starch (moisture content: 9.35 wt%) in a weight ratio of 95:5. Then, 4 parts by weight of binder and 24.6 parts by weight of water were added to 100 parts by weight of coke dust, and uniformly mixed for about 3 minutes at room temperature to prepare a blended coal. Thereafter, the coal briquettes were compression molded (pressure: 200 kgf) by a hydraulic press molding machine to prepare coal briquettes having a thickness of about 3.0 to 3.5 cm and a weight of about 60 g.
제조예 1-2.Preparation Example 1-2.
코크스 분진 100 중량부에 대하여 바인더 첨가량이 3 중량부이고 물(water) 첨가량이 24.5 중량부인 점을 제외하고 제조예 1-1과 동일한 조건 및 방법으로 성형탄을 제조하였다.Coal briquettes were manufactured in the same conditions and methods as in Production Example 1-1, except that the binder addition amount was 3 parts by weight and the water addition amount was 24.5 parts by weight based on 100 parts by weight of coke dust.
제조예 1-3.Preparation Example 1-3.
코크스 분진 100 중량부에 대하여 바인더 첨가량이 2 중량부이고 물(water) 첨가량이 24.3 중량부인 점을 제외하고 제조예 1-1과 동일한 조건 및 방법으로 성형탄을 제조하였다.Coal briquettes were manufactured in the same conditions and methods as in Production Example 1-1, except that the binder addition amount was 2 parts by weight and the water addition amount was 24.3 parts by weight based on 100 parts by weight of coke dust.
제조예 2-1.Production Example 2-1.
입도 80 메쉬(mesh) 및 입도 20 메쉬(mesh)가 50:50의 중량비로 혼합된 코크스 분진(수분 함량 : 0.67 중량%)을 준비하였다. 또한, 일반 옥수수 전분(수분 함량 : 11.98 중량%) 및 알파화 옥수수 파전분(수분 함량 : 9.35 중량%)을 90:10의 중량비로 혼합하여 바인더를 준비하였다. 이후, 코크스 분진 100 중량부에 대하여 바인더 4 중량부 및 물(water) 24.6 중량부를 첨가하고 상온에서 약 3분 동안 균일하게 혼합하여 배합탄을 제조하였다. 이후, 배합탄을 유압 프레스 성형기로 압축성형(압력 : 200 ㎏f)하여 두께가 약 3.0~3.5㎝이고 무게가 약 60g인 성형탄을 제조하였다.Coke dust (moisture content: 0.67% by weight) in which a particle size of 80 mesh and a particle size of 20 mesh were mixed in a weight ratio of 50:50 was prepared. In addition, a binder was prepared by mixing common corn starch (moisture content: 11.98 wt%) and alpha-ized corn starch (moisture content: 9.35 wt%) in a weight ratio of 90:10. Then, 4 parts by weight of binder and 24.6 parts by weight of water were added to 100 parts by weight of coke dust, and uniformly mixed for about 3 minutes at room temperature to prepare a blended coal. Thereafter, the coal briquettes were compression molded (pressure: 200 kgf) by a hydraulic press molding machine to prepare coal briquettes having a thickness of about 3.0 to 3.5 cm and a weight of about 60 g.
제조예 2-2.Production Example 2-2.
코크스 분진 100 중량부에 대하여 바인더 첨가량이 3 중량부이고 물(water) 첨가량이 24.5 중량부인 점을 제외하고 제조예 2-1과 동일한 조건 및 방법으로 성형탄을 제조하였다.Coal briquettes were manufactured in the same conditions and methods as in Production Example 2-1, except that the binder addition amount was 3 parts by weight and the water addition amount was 24.5 parts by weight based on 100 parts by weight of coke dust.
제조예 2-3.Production Example 2-3.
코크스 분진 100 중량부에 대하여 바인더 첨가량이 2 중량부이고 물(water) 첨가량이 24.3 중량부인 점을 제외하고 제조예 2-1과 동일한 조건 및 방법으로 성형탄을 제조하였다.Coal briquettes were manufactured in the same conditions and methods as in Production Example 2-1, except that the binder addition amount was 2 parts by weight and the water addition amount was 24.3 parts by weight based on 100 parts by weight of coke dust.
제조예 3-1.Production Example 3-1.
입도 80 메쉬(mesh) 및 입도 20 메쉬(mesh)가 50:50의 중량비로 혼합된 코크스 분진(수분 함량 : 0.67 중량%)을 준비하였다. 또한, 일반 옥수수 전분(수분 함량 : 11.98 중량%) 및 알파화 옥수수 전분(수분 함량 : 9.35 중량%)을 85:5의 중량비로 혼합하여 바인더를 준비하였다. 이후, 코크스 분진 100 중량부에 대하여 바인더 4 중량부 및 물(water) 24.6 중량부를 첨가하고 상온에서 약 3분 동안 균일하게 혼합하여 배합탄을 제조하였다. 이후, 배합탄을 유압 프레스 성형기로 압축성형(압력 : 200 ㎏f)하여 두께가 약 3.0~3.5㎝이고 무게가 약 60g인 성형탄을 제조하였다.Coke dust (moisture content: 0.67% by weight) in which a particle size of 80 mesh and a particle size of 20 mesh were mixed in a weight ratio of 50:50 was prepared. In addition, a binder was prepared by mixing normal corn starch (water content: 11.98 wt%) and alpha-ized corn starch (water content: 9.35 wt%) in a weight ratio of 85:5. Then, 4 parts by weight of binder and 24.6 parts by weight of water were added to 100 parts by weight of coke dust, and uniformly mixed for about 3 minutes at room temperature to prepare a blended coal. Thereafter, the coal briquettes were compression molded (pressure: 200 kgf) by a hydraulic press molding machine to prepare coal briquettes having a thickness of about 3.0 to 3.5 cm and a weight of about 60 g.
제조예 3-2.Production Example 3-2.
코크스 분진 100 중량부에 대하여 바인더 첨가량이 3 중량부이고 물(water) 첨가량이 24.5 중량부인 점을 제외하고 제조예 3-1과 동일한 조건 및 방법으로 성형탄을 제조하였다.Coal briquettes were prepared in the same conditions and methods as in Production Example 3-1, except that the binder addition amount was 3 parts by weight and the water addition amount was 24.5 parts by weight based on 100 parts by weight of coke dust.
제조예 3-3.Production Example 3-3.
코크스 분진 100 중량부에 대하여 바인더 첨가량이 2 중량부이고 물(water) 첨가량이 24.3 중량부인 점을 제외하고 제조예 3-1과 동일한 조건 및 방법으로 성형탄을 제조하였다.Coal briquettes were manufactured in the same conditions and methods as in Production Example 3-1, except that the binder addition amount was 2 parts by weight and the water addition amount was 24.3 parts by weight based on 100 parts by weight of coke dust.
제조예 4-1.Production Example 4-1.
입도 80 메쉬(mesh) 및 입도 20 메쉬(mesh)가 50:50의 중량비로 혼합된 코크스 분진(수분 함량 : 0.67 중량%)을 준비하였다. 또한, 일반 옥수수 전분(수분 함량 : 11.98 중량%) 및 알파화 옥수수 전분(수분 함량 : 9.35 중량%)을 50:50의 중량비로 혼합하여 바인더를 준비하였다. 이후, 코크스 분진 100 중량부에 대하여 바인더 4 중량부 및 물(water) 24.6 중량부를 첨가하고 상온에서 약 3분 동안 균일하게 혼합하여 배합탄을 제조하였다. 이후, 배합탄을 유압 프레스 성형기로 압축성형(압력 : 200 ㎏f)하여 두께가 약 3.0~3.5㎝이고 무게가 약 60g인 성형탄을 제조하였다.Coke dust (moisture content: 0.67% by weight) in which a particle size of 80 mesh and a particle size of 20 mesh were mixed in a weight ratio of 50:50 was prepared. In addition, a binder was prepared by mixing common corn starch (water content: 11.98 wt%) and alpha-ized corn starch (water content: 9.35 wt%) in a weight ratio of 50:50. Then, 4 parts by weight of binder and 24.6 parts by weight of water were added to 100 parts by weight of coke dust, and uniformly mixed for about 3 minutes at room temperature to prepare a blended coal. Thereafter, the coal briquettes were compression molded (pressure: 200 kgf) by a hydraulic press molding machine to prepare coal briquettes having a thickness of about 3.0 to 3.5 cm and a weight of about 60 g.
제조예 4-2.Production Example 4-2.
코크스 분진 100 중량부에 대하여 바인더 첨가량이 3 중량부이고 물(water) 첨가량이 24.5 중량부인 점을 제외하고 제조예 4-1과 동일한 조건 및 방법으로 성형탄을 제조하였다.Coal briquettes were manufactured in the same conditions and methods as in Production Example 4-1, except that the binder addition amount was 3 parts by weight and the water addition amount was 24.5 parts by weight based on 100 parts by weight of coke dust.
제조예 4-3.Production Example 4-3.
코크스 분진 100 중량부에 대하여 바인더 첨가량이 2 중량부이고 물(water) 첨가량이 24.4 중량부인 점을 제외하고 제조예 4-1과 동일한 조건 및 방법으로 성형탄을 제조하였다.Coal briquettes were manufactured under the same conditions and methods as in Production Example 4-1, except that the binder addition amount was 2 parts by weight and the water addition amount was 24.4 parts by weight based on 100 parts by weight of coke dust.
비교예 1-1.Comparative Example 1-1.
입도 80 메쉬(mesh) 및 입도 20 메쉬(mesh)가 50:50의 중량비로 혼합된 코크스 분진(수분 함량 : 0.67 중량%)을 준비하였다. 이후, 코크스 분진 100 중량부에 대하여 바인더로 고형분 농도가 약 75 브릭스(Birx)인 당밀(수분 함량 : 25 중량%) 4.21 중량부 및 경화제로 생석회(수분 함량 : 6 중량%) 0.89 중량부를 첨가하고 상온에서 약 3분 동안 균일하게 혼합하여 배합탄을 제조하였다. 이후, 배합탄을 유압 프레스 성형기로 압축성형(압력 : 200 ㎏f)하여 두께가 약 3.0~3.5㎝이고 무게가 약 60g인 성형탄을 제조하였다.Coke dust (moisture content: 0.67% by weight) in which a particle size of 80 mesh and a particle size of 20 mesh were mixed in a weight ratio of 50:50 was prepared. Then, 4.21 parts by weight of molasses (moisture content: 25% by weight) with a solids concentration of about 75 Brix relative to 100 parts by weight of coke dust as a binder and 0.89 parts by weight of quicklime (moisture content: 6% by weight) as a curing agent were added. The mixture was prepared by mixing uniformly at room temperature for about 3 minutes. Thereafter, the coal briquettes were compression molded (pressure: 200 kgf) by a hydraulic press molding machine to prepare coal briquettes having a thickness of about 3.0 to 3.5 cm and a weight of about 60 g.
비교예 1-2.Comparative Example 1-2.
코크스 분진 100 중량부에 대하여 바인더 첨가량이 3.16 중량부이고 경화제 첨가량이 0.67 중량부인 점을 제외하고 비교예 1-1과 동일한 조건 및 방법으로 성형탄을 제조하였다.Coal briquettes were prepared in the same conditions and methods as Comparative Example 1-1, except that the binder addition amount was 3.16 parts by weight and the curing agent addition amount was 0.67 parts by weight based on 100 parts by weight of coke dust.
비교예 1-3.Comparative Example 1-3.
코크스 분진 100 중량부에 대하여 바인더 첨가량이 2.1 중량부이고 경화제 첨가량이 0.447 중량부인 점을 제외하고 비교예 1-1과 동일한 조건 및 방법으로 성형탄을 제조하였다.Coal briquettes were manufactured in the same conditions and methods as Comparative Example 1-1, except that the binder addition amount was 2.1 parts by weight and the curing agent addition amount was 0.447 parts by weight based on 100 parts by weight of coke dust.
비교예 2-1.Comparative Example 2-1.
입도 80 메쉬(mesh) 및 입도 20 메쉬(mesh)가 50:50의 중량비로 혼합된 코크스 분진(수분 함량 : 0.67 중량%)을 준비하였다. 또한, 일반 옥수수 전분(수분 함량 : 11.98 중량%) 및 리그닌(수분 함량 : 7.8 중량%)을 50:50의 중량비로 혼합하여 바인더를 준비하였다. 이후, 코크스 분진 100 중량부에 대하여 바인더 4 중량부, 5 중량% 농도의 아세트산 수용액(수분 함량 : 95 중량%) 0.5 중량부 및 물(water) 2 중량부를 첨가하고 상온에서 약 3분 동안 균일하게 혼합하여 배합탄을 제조하였다. 이후, 배합탄을 유압 프레스 성형기로 압축성형(압력 : 200 ㎏f)하여 두께가 약 3.0~3.5㎝이고 무게가 약 60g인 성형탄을 제조하였다.Coke dust (moisture content: 0.67% by weight) in which a particle size of 80 mesh and a particle size of 20 mesh were mixed in a weight ratio of 50:50 was prepared. In addition, a binder was prepared by mixing general corn starch (moisture content: 11.98 wt%) and lignin (moisture content: 7.8 wt%) in a weight ratio of 50:50. Subsequently, 4 parts by weight of a binder, 100 parts by weight of coke dust, 0.5 parts by weight of an aqueous solution of acetic acid (water content: 95% by weight) at a concentration of 5% by weight, and 2 parts by weight of water were added and uniformly at room temperature for about 3 minutes. Mixed to prepare a blended coal. Thereafter, the coal briquettes were compression molded (pressure: 200 kgf) by a hydraulic press molding machine to prepare coal briquettes having a thickness of about 3.0 to 3.5 cm and a weight of about 60 g.
비교예 2-2.Comparative Example 2-2.
코크스 분진 100 중량부에 대하여 바인더 첨가량이 3 중량부이고, 아세트산 수용액 첨가량이 0.375 중량부이고, 물(water) 첨가량이 1.5 중량부인 점을 제외하고 비교예 2-1과 동일한 조건 및 방법으로 성형탄을 제조하였다.Coal briquettes were subjected to the same conditions and methods as Comparative Example 2-1, except that the binder addition amount was 3 parts by weight, the acetic acid aqueous solution addition amount was 0.375 parts by weight, and the water addition amount was 1.5 parts by weight based on 100 parts by weight of coke dust. It was prepared.
비교예 2-3.Comparative Example 2-3.
코크스 분진 100 중량부에 대하여 바인더 첨가량이 2 중량부이고, 아세트산 수용액 첨가량이 0.25 중량부이고, 물(water) 첨가량이 1 중량부인 점을 제외하고 비교예 2-1과 동일한 조건 및 방법으로 성형탄을 제조하였다.Coal briquettes were subjected to the same conditions and methods as Comparative Example 2-1, except that the binder addition amount was 2 parts by weight, the acetic acid aqueous solution addition amount was 0.25 parts by weight, and the water addition amount was 1 part by weight based on 100 parts by weight of coke dust. It was prepared.
비교예 3-1.Comparative Example 3-1.
입도 80 메쉬(mesh) 및 입도 20 메쉬(mesh)가 50:50의 중량비로 혼합된 코크스 분진(수분 함량 : 0.67 중량%)을 준비하였다. 이후, 코크스 분진 100 중량부에 대하여 일반 옥수수 전분(수분 함량 : 11.98 중량%) 4 중량부 및 물(water) 24.6 중량부를 첨가하고 상온에서 약 3분 동안 균일하게 혼합하여 배합탄을 제조하였다. 이후, 배합탄을 유압 프레스 성형기로 압축성형(압력 : 200 ㎏f)하여 두께가 약 3.0~3.5㎝이고 무게가 약 60g인 성형탄을 제조하였다.Coke dust (moisture content: 0.67% by weight) in which a particle size of 80 mesh and a particle size of 20 mesh were mixed in a weight ratio of 50:50 was prepared. Thereafter, 4 parts by weight of normal corn starch (water content: 11.98% by weight) and 24.6 parts by weight of water were added to 100 parts by weight of coke dust, and uniformly mixed for about 3 minutes at room temperature to prepare a blended coal. Thereafter, the coal briquettes were compression molded (pressure: 200 kgf) by a hydraulic press molding machine to prepare coal briquettes having a thickness of about 3.0 to 3.5 cm and a weight of about 60 g.
비교예 3-2.Comparative Example 3-2.
코크스 분진 100 중량부에 대하여 일반 옥수수 전분 첨가량이 3 중량부이고, 물(water) 첨가량이 24.5 중량부인 점을 제외하고 비교예 3-1과 동일한 조건 및 방법으로 성형탄을 제조하였다.Coal briquettes were manufactured in the same conditions and methods as Comparative Example 3-1, except that the amount of added corn corn starch was 3 parts by weight and the water addition amount was 24.5 parts by weight relative to 100 parts by weight of coke dust.
비교예 3-3.Comparative Example 3-3.
코크스 분진 100 중량부에 대하여 일반 옥수수 전분 첨가량이 2 중량부이고, 물(water) 첨가량이 24.3 중량부인 점을 제외하고 비교예 3-1과 동일한 조건 및 방법으로 성형탄을 제조하였다.Coal briquettes were manufactured in the same conditions and methods as Comparative Example 3-1, except that the amount of added corn corn starch was 2 parts by weight and the water addition amount was 24.3 parts by weight relative to 100 parts by weight of coke dust.
비교예 4-1.Comparative Example 4-1.
입도 80 메쉬(mesh) 및 입도 20 메쉬(mesh)가 50:50의 중량비로 혼합된 코크스 분진(수분 함량 : 0.67 중량%)을 준비하였다. 이후, 코크스 분진 100 중량부에 대하여 알파화 옥수수 전분(수분 함량 : 9.35 중량%) 4 중량부 및 물(water) 24.7 중량부를 첨가하고 상온에서 약 3분 동안 균일하게 혼합하여 배합탄을 제조하였다. 이후, 배합탄을 유압 프레스 성형기로 압축성형(압력 : 200 ㎏f)하여 두께가 약 3.0~3.5㎝이고 무게가 약 60g인 성형탄을 제조하였다.Coke dust (moisture content: 0.67% by weight) in which a particle size of 80 mesh and a particle size of 20 mesh were mixed in a weight ratio of 50:50 was prepared. Thereafter, 4 parts by weight of alpha-ized corn starch (water content: 9.35% by weight) and 24.7 parts by weight of water were added to 100 parts by weight of coke dust, and uniformly mixed at room temperature for about 3 minutes to prepare a blended coal. Thereafter, the coal briquettes were compression molded (pressure: 200 kgf) by a hydraulic press molding machine to prepare coal briquettes having a thickness of about 3.0 to 3.5 cm and a weight of about 60 g.
비교예 4-2.Comparative Example 4-2.
코크스 분진 100 중량부에 대하여 알파화 옥수수 전분 첨가량이 3 중량부이고, 물(water) 첨가량이 24.5 중량부인 점을 제외하고 비교예 4-1과 동일한 조건 및 방법으로 성형탄을 제조하였다.Coal briquettes were manufactured in the same conditions and methods as Comparative Example 4-1, except that the addition amount of the alpha-ized corn starch was 3 parts by weight and the water addition amount was 24.5 parts by weight based on 100 parts by weight of coke dust.
비교예 4-3.Comparative Example 4-3.
코크스 분진 100 중량부에 대하여 알파화 옥수수 전분 첨가량이 2 중량부이고, 물(water) 첨가량이 24.4 중량부인 점을 제외하고 비교예 4-1과 동일한 조건 및 방법으로 성형탄을 제조하였다.Coal briquettes were prepared in the same conditions and methods as Comparative Example 4-1, except that the addition amount of the alpha-ized corn starch was 2 parts by weight and the water addition amount was 24.4 parts by weight based on 100 parts by weight of coke dust.
2. 2. 성형탄의Coal briquettes 성형성 및 물성 측정 Formability and physical property measurement
(1) 성형성(1) Formability
제조예 1-1 내지 1-3, 제조예 2-1 내지 2-3, 제조예 3-1 내지 3-3, 제조예 4-1 내지 4-3, 비교예 1-1 내지 1-3, 비교예 2-1 내지 2-3, 비교예 3-1 내지 3-3, 비교예 4-1 내지 4-3에서 압축성형시 성형탄의 형태를 관찰한 결과 바인더로 알파화 옥수수 전분만을 사용한 비교예 4-1 내지 4-3에서 성형물의 가장자리가 크게 파손되는 현상이 발생하였다. 추가적인 실험을 통해 성형탄의 성형성을 관찰한 결과, 바인더로 일반 옥수수 전분 및 알파화 옥수수 전분의 혼합물을 사용할 때 바인더 내에서 건조 중량을 기준으로 알파화 옥수수 전분의 함량이 60 중량%를 초과하면 성형성이 현저하게 불량한 것으로 나타났다.Production Examples 1-1 to 1-3, Production Examples 2-1 to 2-3, Production Examples 3-1 to 3-3, Production Examples 4-1 to 4-3, Comparative Examples 1-1 to 1-3, In Comparative Examples 2-1 to 2-3, Comparative Examples 3-1 to 3-3, and Comparative Examples 4-1 to 4-3, as a result of observing the shape of coal briquettes during compression molding, a comparative example using only alpha-ized corn starch as a binder In 4-1 to 4-3, a phenomenon in which the edge of the molded product was significantly damaged occurred. As a result of observing the moldability of coal briquettes through additional experiments, when the mixture of common corn starch and alpha cornstarch as a binder is used, molding is performed when the content of alpha cornstarch based on dry weight in the binder exceeds 60% by weight. The sex was found to be significantly poor.
(2) 압축강도(2) Compressive strength
제조예 1-1 내지 1-3, 제조예 2-1 내지 2-3, 제조예 3-1 내지 3-3, 제조예 4-1 내지 4-3, 비교예 1-1 내지 1-3, 비교예 2-1 내지 2-3, 비교예 3-1 내지 3-3, 비교예 4-1 내지 4-3에서 제조한 성형탄을 약 120℃에서 약 1 hr 동안 건조한 후, 성형탄 상부를 일정한 속도로 눌러 하중을 가하고 성형탄이 파괴될 때의 최고 하중을 측정하였다. 하기 표 1에 제조예 1-1 내지 1-3, 제조예 2-1 내지 2-3, 제조예 3-1 내지 3-3, 제조예 4-1 내지 4-3, 비교예 1-1 내지 1-3, 비교예 2-1 내지 2-3, 비교예 3-1 내지 3-3, 비교예 4-1 내지 4-3에서 제조한 성형탄의 압축강도 측정 결과를 나타내었다.Production Examples 1-1 to 1-3, Production Examples 2-1 to 2-3, Production Examples 3-1 to 3-3, Production Examples 4-1 to 4-3, Comparative Examples 1-1 to 1-3, After drying the briquettes prepared in Comparative Examples 2-1 to 2-3, Comparative Examples 3-1 to 3-3, and Comparative Examples 4-1 to 4-3 at about 120° C. for about 1 hr, the upper portion of the briquettes was constant. Press to apply a load and measure the highest load when the coal briquettes are destroyed. In Table 1, Preparation Examples 1-1 to 1-3, Preparation Examples 2-1 to 2-3, Preparation Examples 3-1 to 3-3, Preparation Examples 4-1 to 4-3, and Comparative Examples 1-1 to The compression strength measurement results of the coal briquettes prepared in 1-3, Comparative Examples 2-1 to 2-3, Comparative Examples 3-1 to 3-3, and Comparative Examples 4-1 to 4-3 are shown.
상기 표 1에서 보이는 바와 같이 제조예 1-1 내지 4-3에서 제조한 성형탄은 비교예 1-1 내지 3-3에서 제조한 성형탄에 비해 매우 높은 압축강도를 보였다. 한편, 바인더로 알파화 옥수수 전분만을 사용한 비교예 4-1 내지 4-3은 압축강도는 가장 우수하였으나 성형성이 현저하게 불량하고 제조원가가 매우 높아 성형탄의 제품화 관점에서 치명적인 약점을 갖는 것으로 평가하였다.As shown in Table 1, the coal briquettes prepared in Production Examples 1-1 to 4-3 showed very high compressive strength compared to the coal briquettes prepared in Comparative Examples 1-1 to 3-3. On the other hand, Comparative Examples 4-1 to 4-3 using only alpha-ized corn starch as a binder had the best compressive strength, but were evaluated to have a fatal weakness from the viewpoint of commercialization of coal briquettes, although the moldability was remarkably poor and the manufacturing cost was very high.
(3) 낙하강도(3) Drop strength
제조예 1-1, 제조예 2-1, 제조예 3-1, 제조예 4-1, 비교예 1-1, 비교예 2-1, 비교예 3-1, 비교예 4-1에서 제조한 성형탄을 상온에서 1hr 또는 24 hr 동안 양생한 후, 지상으로부터 1.5m 높이에서 성형탄을 4회 또는 8회 낙하시키고, 20㎜ 이상의 입도로 형태를 유지하는 성형탄의 무게를 측정하였다. 이후, 전체 성형탄 무게를 기준으로 낙하 후 20㎜ 이상의 입도로 형태를 유지하는 성형탄의 무게를 백분율로 나타내었다. 하기 표 2에 제조예 1-1, 제조예 2-1, 제조예 3-1, 제조예 4-1, 비교예 1-1, 비교예 2-1, 비교예 3-1, 비교예 4-1에서 제조한 성형탄의 낙하강도 측정 결과를 나타내었다.Preparation in Preparation Example 1-1, Preparation Example 2-1, Preparation Example 3-1, Preparation Example 4-1, Comparative Example 1-1, Comparative Example 2-1, Comparative Example 3-1, and Comparative Example 4-1 After curing the coal briquettes at room temperature for 1 hr or 24 hr, the coal briquettes were dropped 4 or 8 times at a height of 1.5 m from the ground, and the weight of the coal briquettes maintaining the shape with a particle size of 20 mm or more was measured. Thereafter, the weight of the coal briquettes maintaining the shape at a particle size of 20 mm or more after falling based on the weight of the entire coal briquettes is expressed as a percentage. In Table 2, Preparation Example 1-1, Preparation Example 2-1, Preparation Example 3-1, Preparation Example 4-1, Comparative Example 1-1, Comparative Example 2-1, Comparative Example 3-1, and Comparative Example 4- The results of measuring the drop strength of the coal briquettes prepared in 1 are shown.
구분Coal briquettes
division
24hr curing
상기 표 2에서 보이는 바와 같이 제조예 1-1 내지 4-1에서 제조한 성형탄은 비교예 1-1 내지 3-1에서 제조한 성형탄에 비해 매우 높은 낙하강도를 보였다.As shown in Table 2, the coal briquettes prepared in Production Examples 1-1 to 4-1 showed very high drop strength compared to the coal briquettes prepared in Comparative Examples 1-1 to 3-1.
이상에서와 같이 본 발명을 실시예를 통해 설명하였지만 본 발명이 반드시 여기에만 한정되는 것은 아니며 본 발명의 범주와 사상을 벗어나지 않는 범위 내에서 다양한 변형실시가 가능함은 물론이다. 따라서, 본 발명의 보호범위는 본 발명에 첨부된 특허청구의 범위에 속하는 모든 실시 형태를 포함하는 것으로 해석되어야 한다.As described above, the present invention has been described through examples, but the present invention is not necessarily limited thereto, and various modifications can be made without departing from the scope and spirit of the present invention. Accordingly, the protection scope of the present invention should be construed to include all embodiments falling within the scope of the claims appended to the present invention.
Claims (10)
건조 중량을 기준으로 미알파화 전분 대 알파화 전분의 중량비가 99.9:0.1 내지 40:60인 것을 특징으로 하는 성형탄용 바인더.
Non-alpha-starch and alpha-starch,
A binder for coal briquettes, characterized in that the weight ratio of un-alpha-ized starch to alpha-ized starch based on dry weight is 99.9:0.1 to 40:60.
The binder for coal briquettes according to claim 1, wherein the un-alpha-ized starch is corn starch and the alpha-ized starch is alpha-ized corn starch.
The binder for coal briquettes according to claim 1, wherein the weight ratio of un-alpha-ized starch to alpha-ized starch based on dry weight is 99.5: 0.5 to 40:60.
The binder for coal briquettes according to claim 1, wherein the water content is 5 to 15% by weight.
Coal briquettes comprising pulverized coal and the binder of any one of claims 1 to 4 and having a composition form.
The coal briquettes according to claim 5, comprising 0.5 to 8 parts by weight of a binder with respect to 100 parts by weight of pulverized coal based on dry weight.
The coal briquettes according to claim 6, comprising 1 to 6 parts by weight of binder with respect to 100 parts by weight of pulverized coal based on dry weight.
Mixing the pulverized coal, the binder of any one of claims 1 to 4 and water to prepare a blended coal; And compression molding the blended coal to produce a molded product.
The method of claim 8, wherein the blended coal comprises 0.5 to 8 parts by weight of a binder with respect to 100 parts by weight of the pulverized coal based on dry weight.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101259338B1 (en) * | 2011-09-23 | 2013-05-06 | 주식회사 포스코 | Formed coal using water-soluble binder and method for manufacturing the same |
| KR20160009882A (en) * | 2014-07-17 | 2016-01-27 | 삼성정밀화학 주식회사 | Composition for forming electric arc furnace dust briquette and electric arc furnace dust briquette |
| KR101619793B1 (en) * | 2015-08-07 | 2016-05-13 | 주식회사 후상 | binder for forming briquetting and briquetting using the same, manufacturing method thereof |
| KR20180051097A (en) * | 2016-11-08 | 2018-05-16 | 롯데정밀화학 주식회사 | Composition for forming arc furnace dust briquette and arc furnace dust briquette prepared from the same |
| KR20180076880A (en) * | 2016-12-28 | 2018-07-06 | 롯데정밀화학 주식회사 | Composition of briquette binder, briquette comprising the same and manufacturing method of briquette |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20220004364A (en) * | 2020-07-03 | 2022-01-11 | 도레이첨단소재 주식회사 | Polyester resion for preparing cation dyeable PET and Cation dye-PET composite resin containing the same |
| KR20220087745A (en) * | 2020-12-18 | 2022-06-27 | 대상 주식회사 | Binder for coal briquette, manufacturing method of the same and use of the same |
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| Publication number | Publication date |
|---|---|
| KR102207266B1 (en) | 2021-01-25 |
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