TY - JOUR
T1 - Carbonization of an anthracene oil extract of Akabira (Japan) coal
AU - Korai, Yozo
AU - Fujitsu, Hiroshi
AU - Takeshita, Kenjiro
AU - Mochida, Isao
N1 - Funding Information:
This research was partially supported by the Ministry of Education through the foundation for scientific research No. 343018T. he authors are very grateful to Sumitomo Sekitan Kogyo Co. for providing STC and Akabira coal.
PY - 1981/12
Y1 - 1981/12
N2 - The carbonization of a non-hydrogenated extract (STC) from a low-rank coal (C, 83 wt%) of high fluidity was studied as single carbonizations and as co-carbonizations with additives, an objective being the production of needle-coke. The coke from STC had an optical texture of fine-grained mozaics; however, fractionation followed by co-carbonizations were effective in modifying carbonization properties. The lighter fraction of STC could give a coke with flow texture but in reduced yield. The addition of hydrogenated Ashland A240 pitch (HA240) in a quantity as low as 20% could effectively modify the carbonization properties of STC. A novel co-carbonization, in which an additive such as dihydroanthracene is recovered at the latter stage of the carbonization in the dehydrogenated form, was found to be effective also, although a relatively large amount of the additive was required. Among the non-hydrogenated additives, Ashland A240 pitch was the most effective in modifying the STC. The cocarbonization of fractionated STC reduced the quantity of additive required while maintaining a reasonable coke yield. Some practical aspects for the production of needle-coke from STC are discussed.
AB - The carbonization of a non-hydrogenated extract (STC) from a low-rank coal (C, 83 wt%) of high fluidity was studied as single carbonizations and as co-carbonizations with additives, an objective being the production of needle-coke. The coke from STC had an optical texture of fine-grained mozaics; however, fractionation followed by co-carbonizations were effective in modifying carbonization properties. The lighter fraction of STC could give a coke with flow texture but in reduced yield. The addition of hydrogenated Ashland A240 pitch (HA240) in a quantity as low as 20% could effectively modify the carbonization properties of STC. A novel co-carbonization, in which an additive such as dihydroanthracene is recovered at the latter stage of the carbonization in the dehydrogenated form, was found to be effective also, although a relatively large amount of the additive was required. Among the non-hydrogenated additives, Ashland A240 pitch was the most effective in modifying the STC. The cocarbonization of fractionated STC reduced the quantity of additive required while maintaining a reasonable coke yield. Some practical aspects for the production of needle-coke from STC are discussed.
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U2 - 10.1016/0016-2361(81)90062-4
DO - 10.1016/0016-2361(81)90062-4
M3 - Article
AN - SCOPUS:0019709294
VL - 60
SP - 1106
EP - 1114
JO - Fuel
JF - Fuel
SN - 0016-2361
IS - 12
ER -