WO2016010310A1 - Liant pour briquette de charbon - Google Patents

Liant pour briquette de charbon Download PDF

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Publication number
WO2016010310A1
WO2016010310A1 PCT/KR2015/007206 KR2015007206W WO2016010310A1 WO 2016010310 A1 WO2016010310 A1 WO 2016010310A1 KR 2015007206 W KR2015007206 W KR 2015007206W WO 2016010310 A1 WO2016010310 A1 WO 2016010310A1
Authority
WO
WIPO (PCT)
Prior art keywords
cellulose
binder
coal
coal briquettes
methyl
Prior art date
Application number
PCT/KR2015/007206
Other languages
English (en)
Korean (ko)
Inventor
최낙운
김두호
김태홍
김태헌
Original Assignee
삼성정밀화학(주)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020150097991A external-priority patent/KR102469996B1/ko
Application filed by 삼성정밀화학(주) filed Critical 삼성정밀화학(주)
Priority to AU2015290405A priority Critical patent/AU2015290405B2/en
Priority to BR112017000775-4A priority patent/BR112017000775B1/pt
Priority to CN201580036611.4A priority patent/CN106661474A/zh
Publication of WO2016010310A1 publication Critical patent/WO2016010310A1/fr

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Classifications

    • 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
    • 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

Definitions

  • a binder for coal briquettes is disclosed.
  • the binder for coal briquettes containing the cellulose ether type compound which has a specific viscosity range is disclosed.
  • the steelmaking process is an iron making process for manufacturing molten iron by charging iron ore and coal into a blast furnace, and a steelmaking process for manufacturing molten steel of high purity by removing impurities contained in the molten iron. making process, casting process for manufacturing semi-finished products such as solid slab from liquid molten steel, and rolling process for manufacturing final steel products by processing semi-finished products such as slab. do.
  • Fine ore reduction process FINEX
  • COREX smelting reduction process
  • Bituminous coal having a particle size of more than 8 mm can be used immediately without special processing, but bituminous coal having a particle size of 8 mm or less is limited to use due to dust generation in operation. Therefore, bituminous coal having a particle size of 8 mm or less is used after being processed into coal briquettes of a certain particle size.
  • molasses is conventionally mainly used as a binder.
  • various disadvantages occur.
  • a strength enhancer such as quicklime, bentonite or a mixture thereof must be additionally used to strengthen the coal briquettes.
  • molasses has a sticky liquid form, and the viscosity increases as the temperature decreases, so that the molasses is attached to storage tanks, pipes, and nozzles during storage, transportation, and spraying. Therefore, there is a need for facilities (eg, high pressure pumps and heating devices) to prevent and prevent these problems. Therefore, when molasses is used as a binder, there is a disadvantage that the manufacturing process of coal briquettes is complicated.
  • molasses has a drawback of unstable supply and cost.
  • One embodiment of the present invention provides a binder for coal briquettes including at least one cellulose ether-based compound selected from the group consisting of alkyl cellulose, hydroxyalkyl cellulose and hydroxyalkyl alkyl cellulose having a specific viscosity range.
  • a binder for coal briquettes including at least one cellulose ether-based compound selected from the group consisting of alkyl cellulose, hydroxyalkyl cellulose and hydroxyalkyl alkyl cellulose having a viscosity of 1,000 to 80,000 cps.
  • the binder for coal briquettes may be for binding coal dust to manufacture coal briquettes.
  • the pulverized coal may be bituminous coal having a particle size of 8 mm or less, especially 4 mm or less.
  • the cellulose ether-based compound is selected from the group consisting of methyl cellulose (MC), hydroxyethyl cellulose (HEC), hydroxypropyl cellulose (HPC), hydroxypropyl methyl cellulose (HPMC) and hydroxyethyl methyl cellulose (HEMC) It may comprise at least one substance.
  • the methyl cellulose (MC) has a methyl group substitution degree of 18 to 32wt%
  • the hydroxyethyl cellulose (HEC) has a hydroxyethyl group substitution degree of 20 to 80wt%
  • the hydroxypropyl cellulose (HPC) is 20 It has a hydroxypropyl group substitution degree of ⁇ 80wt%
  • the hydroxypropyl methyl cellulose (HPMC) has a methyl group substitution degree of 18 ⁇ 32wt% and a hydroxypropyl group substitution degree of 2 ⁇ 14wt%
  • the hydroxyethyl Methyl cellulose (HEMC) may have a degree of methyl group substitution of 18 to 32 wt% and a degree of hydroxyethyl group substitution of 2 to 14 wt%.
  • the cellulose ether-based compound may be used in an amount of 0.01 to 15.0 parts by weight based on 100 parts by weight of the pulverized coal.
  • the binder for coal briquettes may further include more than 0 to 10,000 parts by weight of an additional binder based on 100 parts by weight of the cellulose ether-based compound.
  • the additional binder is molasses, corn starch, wheat starch, potato starch, polyethylene glycol (PEG), polyvinyl alcohol (PVA), polyacrylamide (PAM), sucrose, liquid glucose, acacia gum, tragacanth gum ), Gelatin, alginic acid, polymethacrylate, polyvinylpyrrolidone (PVP), sodium polyacrylate, polyvinyl methyl ether (PLM), alginic acid, asphalt, bitumen, BITUMEN, casein, epoxy resin, pitch (PITCH), polyamide, polyurethane and polyvinyl acetal at least one material selected from the group consisting of.
  • the binder for coal briquettes includes a cellulose ether-based compound having a specific viscosity range, thereby reducing the total amount of binder used (up to 1/10 the amount of molasses when 100% molasses is used), and further strength. It may not require a reinforcing agent, can simplify the coal briquette manufacturing process, and can produce a high-strength coal briquette that can maintain a stable supply and price compared to molasses.
  • the binder for coal briquettes including the cellulose ether-based compound is colorless and odorless, odor does not occur, and thus the working environment may be improved.
  • the binder for coal briquettes according to an embodiment of the present invention is at least one cellulose ether compound selected from the group consisting of alkyl cellulose, hydroxyalkyl cellulose and hydroxyalkyl alkyl cellulose having a viscosity of 1,000 to 80,000 cps (centipoises) or mPa s. It includes.
  • viscosity of cellulose ether-based compound is a viscosity measured using DV-II + Pro (spindle HA) of Brookfield Co., Ltd. of aqueous solution of cellulose ether-based compound having a concentration of 2% by weight at 20 ⁇ 0.1 °C It means viscosity.
  • the viscosity of the cellulose ether-based compound is less than 1,000 cps
  • the viscosity of the solution (eg, an aqueous solution) containing the cellulose ether-based compound is so low that the binding force of the cellulose ether-based compound to the pulverized coal falls, and 80,000 cps is used.
  • the molecular weight of the said cellulose ether type compound will be high and water solubility will fall and binding force with respect to the said pulverized coal is not fully exhibited.
  • the viscosity of the cellulose ether-based compound is, for example, 2,000-70,000cps, for example 6,000-60,000cps, for example 7,000-50,000cps, for example 8,000-40,000cps, for example 9,000-30,000cps, for example For example, it may be 10,000-20,000cps.
  • the binder for coal briquettes may be for binding coal dust to manufacture coal briquettes.
  • "pulverized coal” means coal having a particle size of 8 mm or less.
  • the pulverized coal may be bituminous coal.
  • soft coal means a relatively soft coal containing a tar-like substance called bitumen.
  • the pulverized coal may have a particle size of 4 mm or less.
  • the pulverized coal may be prevented from being destroyed by the pressure applied thereto during the manufacturing process of the coal briquettes. Accordingly, if the particle size of the pulverized coal is 4 mm or less, the finally produced coal briquettes may maintain high strength.
  • the cellulose ether-based compound serves to bind the particles of the pulverized coal to each other.
  • the cellulose ether-based compound not only dissolves well in water, but does not precipitate on the inner surface of the nozzle when sprayed through the nozzle in an aqueous state, and thus does not block the nozzle hole.
  • the cellulose ether-based compound alone or mixed with pulverized coal is stored and transported in the form of a solid powder, and mixed with water in the final use stage, thereby miniaturizing and simplifying the storage facility and simplifying the transportation facility. .
  • material cost can also be reduced.
  • the cellulose ether-based compound has the advantage of obtaining coal briquettes having excellent strength without using a strength enhancer.
  • the cellulose ether-based compound may not include carboxymethyl cellulose (CMC). If the cellulose ether-based compound includes carboxymethyl cellulose (CMC), the coal briquettes manufactured using the coal briquette composition including the coal briquette binder may have a reduced strength.
  • CMC carboxymethyl cellulose
  • the cellulose ether-based compound is selected from the group consisting of methyl cellulose (MC), hydroxyethyl cellulose (HEC), hydroxypropyl cellulose (HPC), hydroxypropyl methyl cellulose (HPMC) and hydroxyethyl methyl cellulose (HEMC) It may comprise at least one substance.
  • the methyl cellulose (MC) has a methyl group substitution degree of 18 to 32wt%
  • the hydroxyethyl cellulose (HEC) has a hydroxyethyl group substitution degree of 20 to 80wt%
  • the hydroxypropyl cellulose (HPC) is 20 It has a hydroxypropyl group substitution degree of ⁇ 80wt%
  • the hydroxypropyl methyl cellulose (HPMC) has a methyl group substitution degree of 18 ⁇ 32wt% and a hydroxypropyl group substitution degree of 2 ⁇ 14wt%
  • the hydroxyethyl Methyl cellulose (HEMC) may have a degree of methyl group substitution of 18 to 32 wt% and a degree of hydroxyethyl group substitution of 2 to 14 wt%.
  • the cellulose ether-based compound may be used in an amount of 0.01 to 15.0 parts by weight based on 100 parts by weight of the pulverized coal.
  • amount of the cellulose ether-based compound used is within the above range, high strength coal briquettes can be obtained even with a small amount of molasses.
  • the binder for coal briquettes may further include more than 0 to 10,000 parts by weight of an additional binder based on 100 parts by weight of the cellulose ether-based compound.
  • an additional binder based on 100 parts by weight of the cellulose ether-based compound.
  • the additional binder is molasses, corn starch, wheat starch, potato starch, polyethylene glycol (PEG), polyvinyl alcohol (PVA), polyacrylamide (PAM), sucrose, liquid glucose, acacia gum, tragacanth gum ), Gelatin, alginic acid, polymethacrylate, polyvinylpyrrolidone (PVP), sodium polyacrylate, polyvinyl methyl ether (PLM), alginic acid, asphalt, bitumen, BITUMEN, casein, epoxy resin, pitch (PITCH), polyamide, polyurethane and polyvinyl acetal at least one material selected from the group consisting of.
  • the binder for coal briquettes may provide a binder for coal briquettes having improved strength, even if the binder for coal briquettes does not include a strength enhancer such as quicklime, bentonite, or other materials that can enhance the strength of coal briquettes.
  • a strength enhancer such as quicklime, bentonite, or other materials that can enhance the strength of coal briquettes.
  • Another embodiment of the present invention provides a coal briquettes manufactured using the binder for coal briquettes.
  • the coal briquettes are manufactured using the binder for coal briquettes
  • more than 0 to 15.0 parts by weight of water may be used based on 100 parts by weight of the pulverized coal.
  • the content of the water is within the above range, it is easy to handle and obtain a composition for forming coal briquettes having a uniform composition, it is possible to prevent the phenomenon that some components in the composition for forming coal briquettes on the surface of the molding machine in the coal briquette forming process. have.
  • the coal briquettes manufactured using the coal briquette binder may not be used in a coke manufacturing process, but may be used as a heat source of a Finex process and a Corex process. Therefore, the coal briquettes prepared above have advantages of high thermal efficiency and fast drying speed.
  • the method for producing coal briquettes from the binder for coal briquettes is as follows. That is, a coal briquette forming composition is prepared by mixing the coal briquette binder, pulverized coal, and water, and the coal briquette forming composition is introduced into a mold and pressurized to a predetermined pressure to produce coal briquettes.
  • the binder for coal briquettes may provide a binder for coal briquettes having improved strength even if the binder for coal briquettes is not included.
  • Pulverized coal (SK Networks, particle size: 0.1 ⁇ 5mm) and optionally hydroxypropylmethylcellulose, carboxymethylcellulose (CMC) (ASHILAND, AQUALON TM , Viscosity: 6,000cps), Molasses (KASH Industrial Environment, Inc., Solids: 77.2 wt%, total equivalent weight: 49.3wt%), quicklime (Chungmu Chemical Co., Ltd., CaO content: 70wt% or more, powder level: 170 mesh (89 ⁇ m) sieve 95wt%) mixed in the composition and content shown in Table 1 below To obtain a first composition. Thereafter, distilled water was added to the first composition to obtain a composition for forming coal briquettes. The contents of the components used in the above Examples and Comparative Examples are shown in Table 1 below.
  • the above-mentioned composition for forming coal briquettes was press-molded with a load of 70 kN using a Briquette machine (Jeilsan Co., Ltd., JCB250T) to prepare 50 coal briquettes, and 30 pieces were selected, except for 20 coal briquettes manufactured at first and later. .
  • the manufactured coal briquettes weighed 5 to 10 g per piece.
  • HPMC1 Samsung Fine Chemicals, Mecellose ® PMC (PMC-60U), Viscosity: 60,000 cps, Methyl substitution degree: 23.2 wt%, Hydroxypropyl group substitution degree: 8.8 wt%
  • HPMC2 Samsung Fine Chemicals, Mecellose ® PMC (PMB-40H), Viscosity: 4,000 cps, Methyl substitution degree: 28.6 wt%, Hydroxypropyl group substitution degree: 6.1 wt%
  • HPMC3 Samsung Fine Chemicals Co., Ltd., HPMC, Viscosity: 80,000cps, Methyl substitution degree: 22.8wt%, hydroxypropyl substitution degree: 9.1wt%
  • HPMC4 Samsung Fine Chemicals Co., Ltd., HPMC, Viscosity: 500cps, Methyl substitution degree: 26.4wt%, Hydroxypropyl group substitution degree: 8.2wt%
  • HPMC5 Samsung Fine Chemicals Co., Ltd., HPMC, Viscosity: 85,000cps, Methyl substitution degree: 22.6wt%, Hydroxypropyl group substitution degree: 9.2wt%
  • a sand filled cuboid tray (total weight: 0.5 kg) was dropped from the 10 coal briquettes upwards toward the coal briquettes at a height of 50 cm. This drop test was repeated two more times, once for each of the remaining 20 coal briquettes. Thereafter, the total weight of particles having a size of 10 mm or more among the remaining coal briquettes was expressed as a percentage of the weight of the coal briquettes before falling, and the value thereof was evaluated as an impact strength. In this case, the larger the value obtained, the greater the impact strength.
  • the impact strength is a criterion for determining the rate at which the coal briquettes are dropped several times and lost when transported by the conveyor belt.
  • the maximum strength when the coal briquettes were compressed at a speed of 5 mm / min in a universal testing machine was measured and recorded as a compressive strength.
  • the compressive strength is a criterion for determining the rate at which the coal briquettes are damaged by their own load when the coal briquettes are stored in the storage tank.
  • each of the coal briquettes prepared in Examples 1 to 9 was found to have a higher impact strength and compressive strength than the coal briquettes prepared in Comparative Examples 1 to 4.

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  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)

Abstract

Cette invention concerne un liant pour briquette de charbon. Le liant pour briquette de charbon décrit comprend au moins un composé à base d'éther de cellulose choisi dans le groupe constitué par l'alkylcellulose, l'hydroxyalkylcellulose, et l'hydroxyalkylalkylcellulose, qui ont une viscosité de 1000 à 80000 cps. Le liant pour briquette de charbon n'a pas nécessairement besoin d'un optimiseur de résistance supplémentaire, et peut donner une briquette de charbon de résistance élevée, capable de simplifier le procédé de fabrication de la briquette de charbon.
PCT/KR2015/007206 2014-07-17 2015-07-10 Liant pour briquette de charbon WO2016010310A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU2015290405A AU2015290405B2 (en) 2014-07-17 2015-07-10 Binder for coal briquette
BR112017000775-4A BR112017000775B1 (pt) 2014-07-17 2015-07-10 Ligante para briquete de carvão para preparar briquete de carvão
CN201580036611.4A CN106661474A (zh) 2014-07-17 2015-07-10 用于型煤的粘合剂

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2014-0090348 2014-07-17
KR20140090348 2014-07-17
KR10-2015-0097991 2015-07-09
KR1020150097991A KR102469996B1 (ko) 2014-07-17 2015-07-09 성형탄용 바인더

Publications (1)

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WO2016010310A1 true WO2016010310A1 (fr) 2016-01-21

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PCT/KR2015/007206 WO2016010310A1 (fr) 2014-07-17 2015-07-10 Liant pour briquette de charbon

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WO (1) WO2016010310A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110100019A (zh) * 2016-12-28 2019-08-06 乐天精密化学株式会社 型煤粘合剂组合物、包含该组合物的型煤及型煤的制造方法
CN115279928A (zh) * 2020-05-18 2022-11-01 日本制铁株式会社 团块物的制造方法及团块物

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10259390A (ja) * 1997-03-19 1998-09-29 Nippon Steel Corp 野積み石炭の表面被覆方法
JP2004315241A (ja) * 2003-04-10 2004-11-11 Tokyo Gas Co Ltd 活性炭およびその製造方法
CN101747967A (zh) * 2008-11-28 2010-06-23 宝山钢铁股份有限公司 一种用于铁水生产或造气的工业型煤及其制备方法
KR20130032436A (ko) * 2011-09-23 2013-04-02 주식회사 포스코 수용성 바인더를 이용한 성형탄 및 그 제조방법

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10259390A (ja) * 1997-03-19 1998-09-29 Nippon Steel Corp 野積み石炭の表面被覆方法
JP2004315241A (ja) * 2003-04-10 2004-11-11 Tokyo Gas Co Ltd 活性炭およびその製造方法
CN101747967A (zh) * 2008-11-28 2010-06-23 宝山钢铁股份有限公司 一种用于铁水生产或造气的工业型煤及其制备方法
KR20130032436A (ko) * 2011-09-23 2013-04-02 주식회사 포스코 수용성 바인더를 이용한 성형탄 및 그 제조방법

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
HUI, Q. ET AL.: "Experimental Investigation of Cellulose Used as COREX Coal Briquette Binder", IRON AND STEEL, vol. 47, no. issue 10, 2012, pages 24 - 26 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110100019A (zh) * 2016-12-28 2019-08-06 乐天精密化学株式会社 型煤粘合剂组合物、包含该组合物的型煤及型煤的制造方法
CN115279928A (zh) * 2020-05-18 2022-11-01 日本制铁株式会社 团块物的制造方法及团块物
CN115279928B (zh) * 2020-05-18 2024-01-19 日本制铁株式会社 团块物的制造方法及团块物

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