인도네시아 저등급석탄의 무결합제 성형 특성

전동혁; 임영준; 김상도; 유지호; 최호경; 임정환; 이시훈; Dong Hyuk Chun; Young Joon Rhim; Sang Do Kim; Jiho Yoo; Ho Kyung Choi; Jeong Hwan Lim; Sihyun Lee

Korean Chemical Engineering Research, Vol.53, No.2, 231-235, April, 2015

Export Citation

인도네시아 저등급석탄의 무결합제 성형 특성

Characteristics of Binderless Briquettes for Indonesian Low-Rank Coals

전동혁, 임영준, 김상도 , 유지호, 최호경 , 임정환 , 이시훈 ^†

한국에너지기술연구원 청정연료연구실, 305-343 대전광역시 유성구 가정로 152

Dong Hyuk Chun, Young Joon Rhim, Sang Do Kim , Jiho Yoo, Ho Kyung Choi , Jeong Hwan Lim , and Sihyun Lee^†

Clean Fuel Laboratory, Korea Institute of Energy Research, 152 Gajeong-ro, Yuseong-gu, Daejeon 305-343, Korea

E-mail:

초록

저등급석탄을 건조하고 무결합제로 성형하는 경우에 대한 조건별 특성 연구를 수행하였다. 인도네시아 산 두 종류의 저등급석탄을 전기오븐에서 건조시킨 후 성형에 사용하였으며, 석탄의 수분별, 입도별, 성형압력별, 보관일수별로 압축강도를 측정하여 성형특성을 비교하였다. 석탄의 수분별로는 10~15 wt%에서 가장 높은 강도를 나타내었으며, 석탄의 종류에 따라 가장 높은 강도를 갖는 수분 함량의 차이가 있었다. 석탄의 입도는 적을수록 높은 강도를 나타내며 입도가 증가할수록 수렴하는 경향을 나타내었다. 성형압력이 높아질수록 성형 강도가 높게 나타났으나, 약 300 kN 이상에서는 크게 차이를 보이지 않았다. 보관일수별로는 약 일주일 동안 강도가 급격히 감소한 후 수렴하는 경향을 보였다. 이상의 결과는 저등급석탄의 산지에서 고품위화시킨 석탄을 국내 반입하는 경우에 대한 성형석탄 제조 및 관리의 지 침으로 활용될 수 있다.

The characteristics of binderless briquettes for dried low-rank coal was studied in this work. Two kinds of Indonesian coals were used to briquette after drying them in electric oven. The characteristics of briquettes have been examined by moisture contents, particle size, hydraulic force, and storing period. The optimum moisture contents of briquettes were observed at between 10 wt% and 15 wt%. The strength of coal briquette was stronger as particle size became smaller. The strength of coal briquette was proportional to the hydraulic force under 300 kN, whereas there was little difference among the briquettes made at more than 300 kN of hydraulic force. The strength of briquettes sharply decreased for a week after produced, and then showed the tendency of converging. The results from this work can be a useful guideline of manufacturing and managing upgraded coal briquettes.

Keywords:Low-rank Coal;Binderless;Coal Briquette;Compressive Strength

[References]

http://en.wikipedia.org/wiki/List_of_countries_by_coal_production.
Park Y, Shin J, Gwak J, Lee S, Coal Inside, Vol. 58, KORES, Seoul (2013)
Iancu I, Clarke AW, Trinnaman JA, 2010 Survey of Energy Resources, World Energy Council, London (2010)
Kinoshita S, Yamamoto S, Deguchi T, Shigehisa T, “Demonstration of Upgraded Brown Coal Process by 600 tonnes/day Plant,” Kobelco Technology Review No. 29, December (2010)
Jo WT, Choi HK, Kim SD, Yoo JH, Chun DH, Rhim YJ, Lim JH, Lee SH, Korean Chem. Eng. Res., 51(5), 609 (2013)
Jo W, Choi H, Kim S, Yoo J, Chun D, Rhim Y, Lim J, Lee S, Korean J. Chem. Eng., 30(5), 1034 (2013)
Jo EM, Chun DH, Park IS, Kim SD, Rhim YJ, Choi H, Yoo J, Lim JH, Lee S, Korean J. Chem. Eng., 31(6), 981 (2014)
Mills JE, “Binders for Coal Briquets,” United States Geological Survey, Bulletin 343, Washington Government Printing Office (1908)
Han YN, Tahmasebi A, Yu JL, Li XC, Meesri C, Chem. Eng. Technol., 36(5), 749 (2013)
Kelly JT, Miller G, Namazian M, “A Low Cost and High Quality Solid Fuel From Biomass and Coal Fines,” Technical Report, DOE No. DE-AC26-99FT40157, Altex Technologies Corporation, Santa Clara, July (2001)
Ellison G, Stanmore BR, Fuel Process. Technol., 4, 277 (1981)
Ellison G, Stanmore BR, Fuel Process. Technol., 4, 291 (1981)

[Related Articles]

[1] http://en.wikipedia.org/wiki/List_of_countries_by_coal_production.

[2] Park Y, Shin J, Gwak J, Lee S, Coal Inside, Vol. 58, KORES, Seoul (2013)

[3] Iancu I, Clarke AW, Trinnaman JA, 2010 Survey of Energy Resources, World Energy Council, London (2010)

[4] Kinoshita S, Yamamoto S, Deguchi T, Shigehisa T, “Demonstration of Upgraded Brown Coal Process by 600 tonnes/day Plant,” Kobelco Technology Review No. 29, December (2010)

[5] Jo WT, Choi HK, Kim SD, Yoo JH, Chun DH, Rhim YJ, Lim JH, Lee SH, Korean Chem. Eng. Res., 51(5), 609 (2013)

[6] Jo W, Choi H, Kim S, Yoo J, Chun D, Rhim Y, Lim J, Lee S, Korean J. Chem. Eng., 30(5), 1034 (2013)

[7] Jo EM, Chun DH, Park IS, Kim SD, Rhim YJ, Choi H, Yoo J, Lim JH, Lee S, Korean J. Chem. Eng., 31(6), 981 (2014)

[8] Mills JE, “Binders for Coal Briquets,” United States Geological Survey, Bulletin 343, Washington Government Printing Office (1908)

[9] Han YN, Tahmasebi A, Yu JL, Li XC, Meesri C, Chem. Eng. Technol., 36(5), 749 (2013)

[10] Kelly JT, Miller G, Namazian M, “A Low Cost and High Quality Solid Fuel From Biomass and Coal Fines,” Technical Report, DOE No. DE-AC26-99FT40157, Altex Technologies Corporation, Santa Clara, July (2001)

[11] Ellison G, Stanmore BR, Fuel Process. Technol., 4, 277 (1981)

[12] Ellison G, Stanmore BR, Fuel Process. Technol., 4, 291 (1981)