热能与动力工程专业毕业设计论文翻译[].docx

热能与动力工程专业毕业设计论文翻译[]
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A COMPARISON STUDY OF ACFB AND PCFB ASH CHARACTERISTICS
. Sellakumar and R. Conn
Foster Wheeler Development Corporation, 12 Peach Tree Hill Road, Livingston, NJ 07039, USA
A. Bland
Western Research Institute, 365 N. 9th St, Laramie, WY, 82070, USA
Abstract: The advent of fluidized bed combustion technology has provided avenues
for environmental issues-free use of all types of fossil fuels. With the potential commercial application of Pressurized Circulating Fluidized Bed Combustion (PCFB) technology in the very near future, there is a need to understand the similarities and differences in the characteristics of solid by-products from the conventional Atmospheric Circulating Fluidized Bed Combustion (ACFB) and the PCFB. Similar to
ACFB residues, the main components in PCFB residues are from:
-the inorganic constituents in the coal and incorporated sediments (Al, Fe, and Si),
-the inorganic constituents in the coal and incorporated sediments (Al, Fe, and Si),
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And
-sulfur released from the coal during combustion that is captured by the sorbent.
However, the concentration of each component in the residues may show great variations, depending on the feeds and operating conditions in the unit. In general, the residues discharged from PCFB units with the same types of feeds and sulfur retention should have a relatively lower content of calcium but a higher content of coal-derived constituents than those from ACFB units, because a lower sorbent feed is required for pressurized systems. Also, the sorbent-derived components in the residues fr