Characteristics of mineral distribution and deposition behavior in the ash of oat straw combustion

YANG Tian-hua; DING Jia-jia; LI Run-dong; KAI Xing-ping; SUN Yang; LIU Wei

Volume 40 Issue 11

Nov. 2012

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YANG Tian-hua, DING Jia-jia, LI Run-dong, KAI Xing-ping, SUN Yang, LIU Wei. Characteristics of mineral distribution and deposition behavior in the ash of oat straw combustion[J]. Journal of Fuel Chemistry and Technology, 2012, 40(11): 1310-1316.

Citation:

YANG Tian-hua, DING Jia-jia, LI Run-dong, KAI Xing-ping, SUN Yang, LIU Wei. Characteristics of mineral distribution and deposition behavior in the ash of oat straw combustion[J]. Journal of Fuel Chemistry and Technology, 2012, 40(11): 1310-1316.

Citation:

YANG Tian-hua, DING Jia-jia, LI Run-dong, KAI Xing-ping, SUN Yang, LIU Wei. Characteristics of mineral distribution and deposition behavior in the ash of oat straw combustion[J]. Journal of Fuel Chemistry and Technology, 2012, 40(11): 1310-1316.

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Characteristics of mineral distribution and deposition behavior in the ash of oat straw combustion

Liaoning Key Laboratory of Clean Energy, Shenyang Aerospace University, Shenyang 110136, China

Received Date: 2012-03-20
Rev Recd Date: 2012-06-14
Publish Date: 2012-11-30

Abstract

Abstract

The effects of combustion time on the characteristics of mineral distribution and deposition behavior were carried out in a self-designed drop-tube furnace during oat straw combustion. The thermodynamic equilibrium calculations were used to predict the results. Meanwhile, the ashes of different combustion time at 850℃ were analyzed by XRD, SEM/EDS and EPMA. The results show that the initiative formations of oat straw deposition are alkali metal species which can cohere with fuels, then form particles with different sizes. Holes can be formed in these particles surface by internal oxidation reaction. It is found that potassium feldspar is the main species which acts as an important role in cementing action and supporting structure. There are many K and Al species enriched in the initial deposition. In addition, Na can promote the activity of K in some degree. Some K and Na species in the deposition volatilizes into the gas-phase gradually as the combustion time extends. The relevant compounds of Fe, Ca and Mg continue to fill the interspaces and make the structure closed-grain further. Finally, most elements are distributed uniformity in the deposition.
- biomass,
- combustion,
- deposition,
- alkali metals,
- thermodynamic equilibrium calculations

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References(15)

References

王久臣, 戴林, 田宜水, 秦世平. 中国生物质能产业发展现状及趋势分析[J]. 农业工程学报, 2007, 23(9): 276-282. (WANG Jiu-chen, DAI Lin, TIAN Yi-shui, QIN Shi-ping. Analysis of the development status and trends of biomass energy industry in China[J]. Transactions of the CSAE, 2007, 23(9): 276-282.)

GOGEBAKAN Z, GOGEBAKAN Y, SELCUK N, SELCUK E. Investigation of ash deposition in a pilot-scale fluidized bed combustor co-firing biomass with lignite[J]. Bioresour Technol, 2009, 100(2):1033-1036.

LIU H, FENG Y, WU S, LIU D. The role of ash particles in the bed agglomeration during the fluidized bed combustion of rice straw[J]. Bioresour Technol, 2009, 100(24): 6505-6513.

VAMVUKA D, PITHAROULIS M, ALEVIZOS G, REPOUSKOU E, PENTARI D. Ash effects during combustion of lignite/biomass blends in fluidized bed[J]. Renewable Energy, 2009, 34(12): 2662-2671.

秦建光, 余春江, 聂虎, 李廉明, 骆仲泱, 岑可法. 秸秆燃烧中温度对钾转化与释放的影响[J]. 太阳能学报, 2010, 31(5): 540-544. (QIN Jian-guang, YU Chun-jiang, NIE Hu, LI Lian-ming, LUO Zhang-yang, CEN Ke-fa. The effect of temperature on transformation and release of potassium during straw combustion[J].Acta Energiae Solaris Sinica, 2010, 31(5): 540-544.)

LIN C-L, KUO J-H, WEY M-Y, CHANG S-H, WANG K-S. Inhibition and promotion: The effect of earth alkali metals and operating temperature on particle agglomeration/defluidization during incineration in fluidized bed[J]. Powder Technol, 2009, 189(1): 57-63.

PHONGPHIPHAT A, RYU C, YANG Y B, FINNEY K N, LEYLAND A, SHARIFI V N,SWITHENBANK J. Investigation into high-temperature corrosion in a large-scale municipal waste-to-energy plant[J]. Corros Sci, 2010, 52(12): 3861-3874.

ELLED A L, DAVIDSSON K O, AMAND L E.Sewage sludge as a deposit inhibitor when co-fired with high potassium fuels[J].Biomass Bioenergy, 2010, 34(1): 1546-1554.

SHAH K V, CIEPLIK M K, BETRAND C I, KAMP W L, VUTHALURU H B. Correlating the effects of ash elements and their association in the fuel matrix with the ash release during pulverized fuel combustion[J]. Fuel Process Technol, 2010, 91(5): 531-545.

HAYKIRI-ACMA H, YAMAN S, KUCUKBAYRAK S.Effect of biomass on temperatures of sintering and initial deformation of lignite ash[J]. Fuel, 2010, 89(10): 3063-3068.

XU X G, LI S-Q, LI G-D, YAO Q. Effect of co-firing straw with two coals on the ash deposition behavior in a down-fired pulverized coal combustor[J]. Energy Fuels, 2010, 24(1): 241-249.

FRYDA L, SOBRINO C, CIEPLIK M, KAMP W L. Study on ash deposition under oxyfuel combustion of coal/biomass blends[J]. Fuel, 2010, 89(8): 1889-1902.

BARTOLOME C, RAMOS A G. Ash deposition behavior of cynara–coal blends in a PF pilot furnace[J]. Fuel Process Technol, 2010, 91(11): 1576-1584.

SKRIFVARSBJ, WESTEN-KARLESSON M, HUPA M, SALMENOJA K. Corrosion of super-heater steel materials under alkali salt deposits: Part 2 SEM analyses of different steel materials[J]. Corros Sci,2010, 52(3): 1011-1019.

ABREU P, CASACA C, COSTA M. Ash deposition during the co-firing of bituminous coal with pine sawdust and olive stones in a laboratory furnace[J]. Fuel, 2010, 89(12): 4040-4048.

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