Ash Deposition Behavior of Upgraded Brown Coal and Bituminous Coal

2010 ◽  
Vol 24 (8) ◽  
pp. 4138-4143 ◽  
Author(s):  
Katsuya Akiyama ◽  
Haeyang Pak ◽  
Toshiya Tada ◽  
Yasuaki Ueki ◽  
Ryo Yoshiie ◽  
...  
Keyword(s):  
Brown Coal ◽  
Bituminous Coal ◽  
Ash Deposition ◽  
Deposition Behavior

Ash deposition behavior of upgraded brown coal in pulverized coal combustion boiler

2011 ◽  
Vol 92 (7) ◽  
pp. 1355-1361 ◽  
Author(s):  
Katsuya Akiyama ◽  
Haeyang Pak ◽  
Yoji Takubo ◽  
Toshiya Tada ◽  
Yasuaki Ueki ◽  
...  
Keyword(s):  
Brown Coal ◽  
Coal Combustion ◽  
Pulverized Coal ◽  
Ash Deposition ◽  
Pulverized Coal Combustion ◽  
Deposition Behavior

Effect of MgO addition to upgraded brown coal on ash-deposition behavior during combustion

Fuel ◽  
2011 ◽  
Vol 90 (11) ◽  
pp. 3230-3236 ◽  
Author(s):  
Katsuya Akiyama ◽  
Haeyang Pak ◽  
Yasuaki Ueki ◽  
Ryo Yoshiie ◽  
Ichiro Naruse
Keyword(s):  
Brown Coal ◽  
Ash Deposition ◽  
Deposition Behavior

Ash deposition behavior in co-combusting high-alkali coal and bituminous coal in a circulating fluidized bed

2019 ◽  
Vol 149 ◽  
pp. 520-527 ◽  
Author(s):  
Yanquan Liu ◽  
Leming Cheng ◽  
Jieqiang Ji ◽  
Weiguo Zhang
Keyword(s):  
Fluidized Bed ◽  
Bituminous Coal ◽  
Circulating Fluidized Bed ◽  
Ash Deposition ◽  
Deposition Behavior ◽  
High Alkali

Slagging Behavior of Upgraded Brown Coal and Bituminous Coal in 145 MW Practical Coal Combustion Boiler

2012 ◽  
pp. 91-98
Author(s):  
Katsuya Akiyama ◽  
Haeyang Pak ◽  
Yoji Takubo ◽  
Toshiya Tada ◽  
Yasuaki Ueki ◽  
...  
Keyword(s):  
Brown Coal ◽  
Coal Combustion ◽  
Bituminous Coal

scholarly journals Experimental Investigation of Ash Deposit Behavior during Co-Combustion of Bituminous Coal with Wood Pellets and Empty Fruit Bunches

Energies ◽  
2019 ◽  
Vol 12 (11) ◽  
pp. 2087 ◽  
Author(s):  
Tae-Yong Jeong ◽  
Lkhagvadorj Sh ◽  
Jong-Ho Kim ◽  
Byoung-Hwa Lee ◽  
Chung-Hwan Jeon
Keyword(s):  
Melting Temperature ◽  
Power Plants ◽  
Bituminous Coal ◽  
Coal Ash ◽  
Milling Process ◽  
Drop Tube ◽  
Ash Deposition ◽  
Wood Pellets ◽  
Empty Fruit Bunches ◽  
Ash Melting

In Korea, oil-palm empty fruit bunches (EFBs), which are byproducts of the crude palm-oil milling process, are among the most promising potential energy sources for power plants. However, the slagging and fouling characteristics of EFBs during combustion have not yet been fully studied. Accordingly, in this study, we investigated the fundamental ash behavior of EFBs in comparison to that of wood pellets (WPs) using a thermomechanical analyzer (TMA) and a drop-tube furnace (DTF). Ash melting and the deposition of ash particles were investigated with traditional prediction indices at several biomass blending ratios. The results demonstrated that, as the ratio of WPs to EFBs increases, the melting temperature decreases and the slagging propensity increases because of the increased biomass alkali content. Moreover, the penetration derived using the TMA shows a higher melting peak at which rapid melting occurs, and the melting temperature distribution is decreased with increased biomass blending. Conversely, the DTF results show different phenomena for ash deposition under the same blending conditions. Blend ratios approaching 10% WP and 15% EFB result in gradual decreases in ash deposition tendencies because of the lower ash contents of the co-combusted mass compared to that of the single coal ash. Further biomass addition increases ash deposition, which is attributable to ash agglomeration from the biomass. Thus, this study demonstrates that blending ratios of 10% WP and 15% EFB provide optimal conditions for co-combustion with the selected bituminous coal. In addition, it is shown that the slagging propensity of EFB is higher than that of WP owing to its ash content and simultaneous agglomeration.

scholarly journals Ash deposition during the co-firing of bituminous coal with pine sawdust and olive stones in a laboratory furnace

Fuel ◽  
2010 ◽  
Vol 89 (12) ◽  
pp. 4040-4048 ◽  
Author(s):  
P. Abreu ◽  
C. Casaca ◽  
M. Costa
Keyword(s):  
Bituminous Coal ◽  
Ash Deposition ◽  
Pine Sawdust ◽  
Laboratory Furnace ◽  
Olive Stones

Implications of coalification levels, Eureka Sound Formation, northeastern Arctic Canada

1977 ◽  
Vol 14 (7) ◽  
pp. 1588-1597 ◽  
Author(s):  
R. M. Bustin ◽  
L. V. Hills ◽  
P. R. Gunther
Keyword(s):  
Brown Coal ◽  
Bituminous Coal ◽  
Geothermal Gradient ◽  
High Heat ◽  
Ellesmere Island ◽  
Sediment Thickness ◽  
Arctic Canada ◽  
Heat Flows ◽  
Tectonic Settings ◽  
Maximum Temperatures

The rank of coal in the Eureka Sound Formation on Ellesmere and Axel Heiberg Islands ranges from brown coal to high volatile bituminous coal, based on reflectance determinations. Reflectance values from coals adjacent to the Stolz Fault, Axel Heiberg Island, are higher than in adjacent areas and may be related to abnormally high heat flows resulting from evaporite diapirism at depth, from the effect of overthrusting, or both. Regional reflectance values indicate that there is no correlation between the degree of coalification and the age of the strata, suggesting differing depths of burial and tectonic settings. Comparison of the coalification gradient at Fosheim Peninsula, Ellesmere Island, with that of the Téjon area of California permits estimation of a geothermal gradient which can be used for calculation of preorogenic sediment thickness. Maximum temperatures derived from the degree of coalification (100 °C at Fosheim) suggest that the sediments are within the zone of initial oil maturity.

Ash deposition behavior under coal and wood co-firing conditions in a 300 kW downfired furnace

2018 ◽  
Vol 91 (5) ◽  
pp. 743-755 ◽  
Author(s):  
Hao Zhou ◽  
Weichen Ma ◽  
Jiakai Zhang ◽  
Yong Xu ◽  
Menghao Zhao
Keyword(s):  
Ash Deposition ◽  
Deposition Behavior
Sign in / Sign up

Export Citation Format

Share Document