KR100635076B1 - manufacture method of dust coke formed material - Google Patents
manufacture method of dust coke formed material Download PDFInfo
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- KR100635076B1 KR100635076B1 KR1020000083154A KR20000083154A KR100635076B1 KR 100635076 B1 KR100635076 B1 KR 100635076B1 KR 1020000083154 A KR1020000083154 A KR 1020000083154A KR 20000083154 A KR20000083154 A KR 20000083154A KR 100635076 B1 KR100635076 B1 KR 100635076B1
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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
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Abstract
본 발명은 성형체를 제조하기 위해 사용되는 분코크스에 배합되는 석탄의 성상과 폐플라스틱의 배합비를 결정하여 고로에 사용할 수 있는 우수한 강도를 갖는 성형체를 제조할 수 있도록 한 분코크스 성형체 제조방법에 관한 것이다.The present invention relates to a method for producing a powdered coke molded body, which is capable of producing a molded body having excellent strength for use in a blast furnace by determining the properties of coal and the ratio of waste plastics mixed in the powdered coke used for producing the molded product. .
특히, 분코크스를 성형체로 제조하는데 방법에 있어서, In particular, in the method for producing powdered coke into a molded article,
분코크스 75%, 석탄15%, 폐플라스틱 바인더 10%를 배합하여 분코크스 성형체를 제조한 후 제조된 성형체를 전기로에서 1000°C로 소성함을 을 특징을 한다.After the powdered coke 75%, coal 15%, waste plastic binder 10% to prepare a powdered coke shaped body is characterized in that the molded body is fired at 1000 ° C in an electric furnace.
Description
본 발명은 분코크스 성형체 제조방법에 관한 것으로, 더욱 상세하게는 성형체를 제조하기 위해 사용되는 분코크스에 배합되는 석탄의 성상과 폐플라스틱의 배합비를 결정하여 고로에 사용할 수 있는 우수한 강도를 갖는 성형체를 제조할 수 있도록 한 분코크스 성형체 제조방법에 관한 것이다.The present invention relates to a method for producing a powdered coke molded body, and more particularly, to a molded product having excellent strength that can be used in a blast furnace by determining the properties of coal and waste plastic blended in the powdered coke used to manufacture the molded product. The present invention relates to a method for producing a powdered coke compact.
일반적으로 고로에서 철광석의 환원재, 열원, 통기성 유지재로 사용되는 야금용 코크스가 사용된다. In general, metallurgical coke is used in the blast furnace, which is used as a reducing material for iron ore, a heat source, and a breathable retainer.
코크스 공장에서 야금용 코크스를 제조를 위해 석탄을 건류하면 이중 75%정도가 코크스로 제조되고 나머지 25%정도는 코크스오븐 가스로 발생된다. When coking coal is used to produce metallurgical coke at the coke plant, 75% of the coke is made from coke and the remaining 25% is produced from coke oven gas.
그리고 제조된 75%의 코크스 가운데 65%는 입도가 15mm 이상인 괴코크스이며 나머지 10%는 분코크스로 발생된다. Of the 75% of the coke produced, 65% of the coke has a particle size of 15mm or more, and the remaining 10% is generated from the coke.
이 분코크스는 입도가 작기 때문에 고로에 사용될 수 없고 종래 주로 소결 원료, 제강 가탄재 등으로 활용되어 왔으나 공정상 수급의 불균형으로 야드에 야적되고 있는 실정이다. The powdered coke cannot be used in a blast furnace because of its small particle size, and it has been mainly used as a raw material for sintering and steelmaking briquettes.
이들 분코크스가 야드에 야적될 경우 야드의 관리도 문제가 되지만 분진공해 등 환경문제도 야기되며 따라서 발생량이 많기 때문에 대량 사용할 수 있는 용도개발이 시급한 실정이다.If these bunkers are deposited in the yard, management of the yard also becomes a problem, but environmental problems such as dust pollution are also caused.
본 발명의 관련된 종래 기술로는 석탄을 성형하여 성형탄으로 사용하거나 다시 건류하여 코크스로 만들어 사용하는 기술이 있으나 이 경우는 원료가 전부 석탄이며 바인더로서 핏치가 7%정도 배합된다. The related art of the present invention includes a technique of forming coal and using coal briquettes or drying and drying it into coke, but in this case, the raw materials are all coal and about 7% pitch is mixed as a binder.
그리고 핏치 바인더로 성형된 성형탄은 강도가 너무 낮기 때문에 수송 중 파손이 많고 야금용 코크스와 같은 용도로 사용이 불가능한 문제가 있었다.In addition, the coal briquettes formed of the pitch binder have a problem that many of the coal briquettes are damaged during transportation and cannot be used for applications such as metallurgical coke.
본 발명은 상술한 종래의 문제점들을 개선하기 위해 안출한 것으로서, 그 목적은 분코크스를 성형할 때 폐플라스틱을 바인더로 이용하고 상온에서 강도를 확보하고 성형체가 고로에 장입된 후 가열되는 과정에서 성형체에 배합된 석탄이 연화 용융되며 분코크스입자를 결합시켜 강도를 확보함으로써 종래 고로에 사용되는 야금용 코크스와 동일한 역할을 할 수 있는 분코크스 성형체 제조방법을 제공하는데 그 목적이 있다.The present invention has been made to solve the above-mentioned problems, the object of the present invention is to use the waste plastic as a binder when forming the powdered coke, to secure the strength at room temperature, the molded body in the process of being heated after charging the molded body in the blast furnace It is an object of the present invention to provide a method for producing a powdered coke molded body which can play the same role as metallurgical coke used in a conventional blast furnace by softening and melting coal combined with powdered coke particles to secure strength.
상기와 같은 목적은 분코크스를 성형체로 제조하는데 방법에 있어서, The above object is in the method for producing powdered coke into a molded article,
분코크스 75%, 석탄15%, 폐플라스틱 바인더 10%를 배합하여 분코크스 성형체를 제조한 후 제조된 성형체를 전기로에서 1000°C로 소성함을 특징을 한다.After the powdered coke 75%, coal 15%, waste plastic binder 10% to prepare a powdered coke molded body is characterized in that the molded product is calcined at 1000 ° C in an electric furnace.
이하, 본 발명에 대하여 표와 실시예를 참조하여 상세히 설명하면 다음과 같 다.Hereinafter, the present invention will be described in detail with reference to tables and examples.
본 발명은 성형체의 주원료인 분코크스와 석탄 그리고 바인더로서 폐플라스틱의 적정 배합비를 결정함에 있어서 표1과 같이 폐플라스틱과 분코크스와 석탄의 배합비를 변화시켜 적정 폐플라스틱 배합비를 결정하였다. In the present invention, in determining the appropriate mixing ratio of waste plastics as the main raw materials of the molded body, such as powdered coke, coal and binder, the mixing ratio of waste plastics, powdered coke and coal is changed as shown in Table 1 to determine the appropriate waste plastics mixing ratio.
폐플라스틱은 폴리에틸렌, 폴리프로필렌, 폴리스타일렌을 사용하였으며 폐플라스틱의 확보 차원에서 3가지 종류의 폐플라스틱을 동일 배합비로 혼합하여 사용하였다. 또 표1의 실시예에서 사용된 석탄은 표2의 석탄 D이다.
Waste plastics were polyethylene, polypropylene, and polystyrene, and three types of waste plastics were mixed at the same mixing ratio in order to secure waste plastics. In addition, the coal used in the Example of Table 1 is coal D of Table 2.
표1. 적정 바인더 혼합비 결정을 위한 실시예Table 1. Example for the Determination of Proper Binder Mixing Ratio
표1의 실시를 위해 폐플라스틱, 분코크스, 석탄 혼합물을 폐플라스틱의 녹는 온도와 열분해 온도 사이인 180℃에서 200℃ 사이의 온도에서 다블롤 타입의 성형기에서 성형하였으며, 성형된 성형체에 대해서 JIS K2151의 방법에 준하여 성형체의 냉간강도 와 압축강도를 측정하였다. Waste plastics, powdered coke, and coal mixtures were molded in a tablet of a double roll type at a temperature between 180 ° C. and 200 ° C., which is between melting temperature and pyrolysis temperature of waste plastics. Cold strength and compressive strength of the molded body were measured according to the method of.
야금용 코크스의 경우 냉간강도 86% 이상, 그리고 압축강도가 158kg/cm2 에서 193kg/cm2 범위인데 반하여 발명예 1, 발명예 2, 발명예 3에서 종래 야금용 코크스 보다 높은 강도의 성형체가 제조된다.In the case of metallurgical coke, the cold strength of 86% and the compressive strength range from 158kg / cm2 to 193kg / cm2, whereas molded examples of higher strength than conventional metallurgical coke are prepared in Inventive Example 1, Inventive Example 2 and Inventive Example 3.
또 표1의 냉간강도는 수송 중 파손되는 정도를 나타내는 지수이며, 압축강도는 호퍼등에서 성형체가 쌓였을 때 견딜 수 있는 정도를 나타내는 지수이다. In addition, the cold strength of Table 1 is an index indicating the degree of breakage during transportation, the compressive strength is an index indicating the degree to which the molded body can withstand when stacked in the hopper.
표1의 실시예에서 폐플라스틱 바인더를 10%이상 배합하면 고로에서 요구하는 강도의 분코크스 성형체를 제조할 수 있으나, 분코크스 성형체에 배합된 석탄은 열간에서 폐플라스틱이 분해되면 분코크스 성형체가 강도를 유지할 수 없기 때문에 분코크스 성형체가 고로에 장입되어 서서이 가열될 때 열간에서 석탄입자가 연화 및 용융하여 분코크스의 입자를 견고하게 결합시켜 주는 역할을 한다. In the example of Table 1, when the waste plastic binder is blended with 10% or more, it is possible to produce a powdered coke molded body having the required strength in the blast furnace.However, the coal blended in the powdered coke molded body has a strength when the waste plastic is decomposed in the hot state. Since it is impossible to maintain the powdered coke shaped body is charged into the blast furnace, when the standing is heated, the coal particles soften and melt in the hot to serve to firmly bind the particles of the powdered coke.
따라서 배합되는 석탄의 성상이 중요하다. 이하 표3의 실시예를 통하여 상세히 설명하면 다음과 같다.Therefore, the property of coal to be mixed is important. Hereinafter, the embodiment of Table 3 will be described in detail.
표2 분코크스 성형체 배합석탄Table 2 Powdered Coking Molded Coal
표3.전기로에서 1000℃ 2시간 소성후 분코크스 성형체의 품질을 시험한 실시 예와 발명예
Table 3 Examples and Invention Examples in which the quality of the powdered coke molded body was tested after firing at 1000 ° C. for 2 hours in an electric furnace
표 3의 실시예와 발명예 들은 분코크스 75%, 석탄15%, 폐플라스틱 바인더 10%를 배합하여 분코크스 성형체를 제조한후 제조된 성형체를 전기로에서 1000°C로 소성하고 이와 같은 소성과정을 거친 분코크스 성형체에 대해 냉간강도와 압축강도를 측정한 것이다. Examples and inventions of Table 3 are prepared by mixing the powdered coke 75%, coal 15%, waste plastic binder 10% to produce a powdered coke molded body after firing the molded product at 1000 ° C in an electric furnace and the firing process The cold and compressive strengths of the coarse powder coke bodies were measured.
실시예 3은 석탄 A가 배합된 것이고 실시예 4는 석탄 B, 실시예 5는 석탄 C, 발명예 1은 석탄 D, 발명예 4는 석탄 E, 발명예 5는 석탄 F가 배합된 것으로 분코크스 성형체에 배합되는 석탄의 유동도가 3.66이상 높을 때 야금용 코크스 이상 품질의 분코크스 성형체 제조가 가능하다. Example 3 is blended with coal A, Example 4 is coal B, Example 5 is coal C, Inventive Example 1 is coal D, Inventive Example 4 is coal E, Inventive Example 5 is coal F is blended When the flow rate of coal blended in the molded body is higher than 3.66, it is possible to manufacture powdered coke molded body of higher quality than metallurgical coke.
이상에서 살펴 본 바와 같이 본 발명은 분코크스,석탄, 폐플라스틱을 배합하 여 제조된 분코크스 성형체는 기존 야금용 코크스와 비교하여 강도가 우수하여 고로조업에 이용될 수 있을 뿐 아니라 종래 야드 야적으로 발생되는 분진공해와 폐플라스틱을 바인더로 이용하므로써 폐기물 재활용의 환경문제도 동시에 해결 할 수 있도록 하는 효과가 있다.
As described above, in the present invention, the powdered coke molded body manufactured by mixing the powdered coke, coal, and waste plastics has superior strength compared to the conventional metallurgical coke, and can be used for blast furnace operations. By using the generated dust pollution and waste plastic as a binder, it is possible to solve the environmental problems of waste recycling at the same time.
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