Activation and reactivity of Estonian oil shale cyclone ash towards SO2 binding
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- 作者：T. Kaljuvee ; O. Trass ; T. Pihu ; A. Konist…
- 关键词：Flue gases ; Oil shale ash ; Pulverized firing ; Semi ; dry grinding ; Sulphur dioxide capture
- 刊名：Journal of Thermal Analysis and Calorimetry
- 出版年：2015
- 出版时间：July 2015
- 年：2015
- 卷：121
- 期：1
- 页码：19-28
- 全文大小：2,105 KB
- 参考文献：1.A. Ots. Oil shale fuel combustion technology. SC Estonian Energy; Tallinn 2004. p. 833.
2.Kaljuvee T, Toom M, Trikkel A, Kuusik R. Reactivity of oil shale ashes in the binding of SO2. J Therm Anal Calorim. 2007;88:51-.View Article
3.Martínez JC, Izquierdo JF, Cunill F, Tejero J, Querol J. Reactivity of fy ash and Ca(OH)2 mixture for SO2 removal flue gas. Ind Eng Chem Res. 1991;30:2143-.View Article
4.Ho CS, Shih SM. Ca(OH)2/fly ash sorbents for SO2 removal. Ind Eng Chem Res. 1992;31:1130-.View Article
5.Fernándes J, Renedo MJ, Pesquera A, Irabien JA. Preparation and characterization of fly ash/hydrated lime sorbents for SO2 removal. Powder Technol. 1997;97:133-.View Article
6.Lin RB, Shih SM, Liu CF. Structural properties and reactivity of Ca(OH)2/fly ash sorbents for flue gas desulphurization. Ind Eng Chem Res. 2003;42:1350-.View Article
7.Li Y, Loh BC, Matsushima N, Nishioka M, Sadakata M. Chain reaction mechanism by NOx in SO2 removal process. Energy Fuels. 2002;16:155-0.View Article
8.Matsushima N, Li Y, Nishioka M, Sadakata M. Novel dry-desulphurization process using Ca(OH)2/fly ash sorbent in a circulating fluidized bed. Environ Sci Technol. 2004;38:6867-4.View Article
9.Lee KT, Bhatia S, Mohamed AR. Preparation and characterization of sorbents prepared from ash (waste material) for sulfur dioxide (SO2) removal. J Mater Cycles Waste Manag. 2005;7:16-3.View Article
10.Lee KT, Mohamed AR, Bhatia S, Chu KH. Removal of sulfur dioxide by fly ash/CaO/CaSO4 sorbents. Chem Eng J. 2005;114:171-.View Article
11.Lee KT, Bathia S, Mohamed AR, Chu KH. Optimazing the specific surface area of fly ash orbents for flue gas desulphurization. Chemosphere. 2006;62:89-6.View Article
12.Lee KT, Bhatia S, Mohamed AR. Kinetic model for the reaction between SO2 and coal fly ash/CaO/CaSO4 sorbent. J Therm Anal Calorim. 2005;79:691-.View Article
13.Trass O, Papachristodoulou GL, Gandolfi EAJ. Wet grinding of coal in the Szego Mill: Limiting predictions and experimental results. Coal Prep. 1995;16:179-01.View Article
14.Anthony EJ, MacKenzie A, Trass O, Iribarne AP, Iribarne JV, Burwell SM. Advanced fluidized bed combustion sorbent reactivation technology. Ind Eng Chem Res. 2003;42:1162-3.View Article
15.Trass O, Delibas C, J. Anthony E. Efficient reactivation of fluidized bed combustor ashes; test results from a 35 MWt utility boiler, proceedings 9th international conference on circulating fluidized beds, CFB-9, Hamburg, May 2008, 869-4.
16.Kaljuvee T, Trikkel A, Kuusik R. Reactivity of oil shale ashes towards sulfur dioxide. 1. Activation of high-temperature ashes. Oil Shale. 1997;14:393-08.
17.Kaljuvee T, Trikkel A, Kuusik R. Decarbonization of natural lime-containing materials and reactivity of calcined products towards SO2 and CO2. J Therm Anal Cal. 2001;64:1229-0.View Article
18.Kaljuvee T, Kuusik R, Trikkel A, Bender V. The role of MgO in the binding of SO2 by lime- containing materials. J Therm Anal Cal. 2005;80:591-.View Article
19.Konist A, Pihu T, Neshumayev D, Siirde A. Oil shale pulverized firing: boiler efficiency, ash balance and flue gas composition. Oil Shale. 2013;30:6-8.View Article
20.Pihu T, Arro H, Prikk A, Rootamm R, Konist A, Kirsim?e K, Liira M, M?tlep R. Oil shale CFBC ash cementation properties in ash fields. Fuel. 2012;93:172-0.View Article
21.Kuusik R, Uibu M, Kirsim?e K. Characterization of oil shale ashes formed at industrial-scale CFBC boiler. Oil Shale. 2005;22:407-0. - 作者单位：T. Kaljuvee (1)
O. Trass (2)
T. Pihu (1)
A. Konist (1)
R. Kuusik (1)
1. Tallinn University of Technology, Ehitajate tee 5, 19086, Tallinn, Estonia
2. University of Toronto, 200 College St., Toronto, ON, M5S 3E5, Canada - 刊物类别：Chemistry and Materials Science
- 刊物主题：Chemistry
Sciences
Polymer Sciences
Physical Chemistry
Inorganic Chemistry
Measurement Science and Instrumentation - 出版者：Akad茅miai Kiad贸, co-published with Springer Science+Business Media B.V., Formerly Kluwer Academic
- ISSN：1572-8943
文摘
Electricity production in Estonia is based mainly on the pulverized firing of low-grade local fuel—Estonian oil shale—and it is concentrated mainly in two big power plants, the Balti and the Eesti power plants. Estonian oil shale is characterized by a low calorific value (8-0?MJ?kg?) and a high content of mineral matter (65-0?%, carbonates and sandy-clay minerals in about equal amounts). The sulphur content is around 1.5?%. At the Eesti Power Plant, the Alstom semi-dry DeSO X system was recently installed on four power units by 180?MWel each to guarantee deeper binding of SO x from flue gases. Commercial lime in addition to oil shale ash is used there as a binding agent. Considering that cyclone ash there contains about 20-5?% free CaO and its ability to bind acidic gases has been proved earlier, the idea to replace expensive commercial sorbent with ash was raised. Hence, activation of ash is needed. The aim of the present work was the comparative investigation of the efficiency of activated ashes and the commercial lime used in the DeSO X system. Initial ash, dry ground and semi-dry ground ashes with two different amounts of water- and 7?% by mass—and commercial lime as sorbents for SO2 binding were studied. The experiments for testing the reactivity of sorbents towards SO2 binding were carried out with the Setaram Labsys 2000 thermoanalyzer under isothermal conditions. The model gaseous mixture used contained 1?mol% sulphur dioxide in nitrogen. The temperature was varied between 80 and 700?°C. A Pt-multiplate crucible was used with 80?±?0.5?mg samples. The results obtained indicated that ash activation by semi-dry grinding increases noticeably the reactivity of it towards SO2 binding, and as a result additional commercial lime will not be needed.