Enlargement of Measurement Range of ERC Drop Tube
Better understanding of combustion process in large scale pulverized coal boilers can help with increasing of coal combustion efficiency and decreasing of pollutant emissions, such as nitrogen oxides and arguable carbon dioxide. This improvement cannot be performed without testing in laboratory cond...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
VSB-Technical University of Ostrava
2011-06-01
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| Series: | Transactions of the VŠB-Technical University of Ostrava, Mechanical Series |
| Subjects: | |
| Online Access: | http://transactions.fs.vsb.cz/2011-1/1856_Paluska.pdf |
| Summary: | Better understanding of combustion process in large scale pulverized coal boilers can help with increasing of coal combustion efficiency and decreasing of pollutant emissions, such as nitrogen oxides and arguable carbon dioxide. This improvement cannot be performed without testing in laboratory conditions. For this purpose, a new testing facility called the drop tube has been built in the Energy Research Center (ERC) of VSB-Technical University of Ostrava. This paper describes the methodology of pulverized coal thermo-kinetic properties determination with the use of the Drop Tube Test Facility and the first steps in improvement of this methodology. There is a new design of the sampling probe, an improved one, gas-tight double-wall design, implemented into the methodology lately. The intermediate space is vacuumed for the purpose of better isolating properties of the probe. Further, the probe is newly supplemented with a cryogenic control valve for smooth regulation of small flow rates of cooling media - liquid nitrogen. These innovations bring cooling media savings, especially thanks to increased efficiency of this media’s cooling potential. Furthermore, smoother regulation allows a sample cooling in an accurately defined point. |
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| ISSN: | 1210-0471 1804-0993 |