TY - JOUR
T1 - Co-gasification performance of coal and petroleum coke blends in a pilot-scale pressurized entrained-flow gasifier
AU - Shen, Cheng Hsien
AU - Chen, Wei Hsin
AU - Hsu, Heng Wen
AU - Sheu, Jieh Yn
AU - Hsieh, Tzu Hsien
PY - 2012/3/25
Y1 - 2012/3/25
N2 - Co-gasification performance of coal and petroleum coke (petcoke) blends in a pilot-scale pressurized entrained-flow gasifier was studied experimentally. Two different coals, including a subbituminous coal (Coal A) and a bituminous coal (Coal B), individually blended with a petcoke in the gasifier were considered. The experimental results suggested that, when the petcoke was mixed with Coal A over 70%, the slagging problem, which could shorten the operational period due to high ash content in the coal, was improved. It was found that increasing O 2/C tended to decrease the syngas concentration and better operational conditions of O 2/C were between 0.6 and 0.65Nm 3kg -1. For the blends of Coal B and the petcoke, the slagging problem was encountered no more, as a result of low ash content in both Coal B and the petcoke. The better co-gasification performance could be achieved if the blending ratio of the two fuels was 50%, perhaps resulting from the synergistic effect of the blends. With the aforementioned blending ratio, the optimal condition of O 2/C was located at around 0.65Nm 3kg -1. The co-gasification was also simulated using Aspen Plus. It revealed that the simulation could provide a useful insight into the practical operation of co-gasification.
AB - Co-gasification performance of coal and petroleum coke (petcoke) blends in a pilot-scale pressurized entrained-flow gasifier was studied experimentally. Two different coals, including a subbituminous coal (Coal A) and a bituminous coal (Coal B), individually blended with a petcoke in the gasifier were considered. The experimental results suggested that, when the petcoke was mixed with Coal A over 70%, the slagging problem, which could shorten the operational period due to high ash content in the coal, was improved. It was found that increasing O 2/C tended to decrease the syngas concentration and better operational conditions of O 2/C were between 0.6 and 0.65Nm 3kg -1. For the blends of Coal B and the petcoke, the slagging problem was encountered no more, as a result of low ash content in both Coal B and the petcoke. The better co-gasification performance could be achieved if the blending ratio of the two fuels was 50%, perhaps resulting from the synergistic effect of the blends. With the aforementioned blending ratio, the optimal condition of O 2/C was located at around 0.65Nm 3kg -1. The co-gasification was also simulated using Aspen Plus. It revealed that the simulation could provide a useful insight into the practical operation of co-gasification.
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U2 - 10.1002/er.1821
DO - 10.1002/er.1821
M3 - Article
AN - SCOPUS:84858865487
SN - 0363-907X
VL - 36
SP - 499
EP - 508
JO - International Journal of Energy Research
JF - International Journal of Energy Research
IS - 4
ER -