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- Title
GREY RELATIONAL ANALYSIS OF N<sub>2</sub>O EMISSION FROM OIL SHALE-FIRED CIRCULATING FLUIDIZED BED.
- Authors
Xiangxin Han; Xiumin Jiang; Jianguo Liu; Hui Wang
- Abstract
This study aims to identify key operating variables affecting N2O emission from oil shale-fired circulating fluidized bed (CFB). These operating variables include bed temperature, excess air factor, particle size, secondary air ratio, Ca/S ratio, circulation rate and bed material height. Using an oil shale-fired CFB pilot setup composed of a quartz tube and heated by an electric heater, the experiments of N2O emission were carried out with oil shale test samples obtained from Huadian, China. Grey relational method was used to treat the experimental data. Calculation results indicate that bed temperature is a variable most closely related to changes in N2O emission; the effects of secondary air ratio and circulation rate are negligible. The operating variables sequenced in order of decreasing effect are bed temperature, excess air factor, Ca/S ratio, particle size, bed material height, secondary air ratio, circulation rate. The experimental results and grey relational analysis can provide reference data for design of oil shale-fired CFB furnaces.
- Subjects
SHALE; OIL shale reserves; EMISSIONS (Air pollution); OXIDE minerals; QUARTZ; ROCK-forming minerals; STEAM generators
- Publication
Oil Shale, 2006, Vol 23, Issue 2, p99
- ISSN
0208-189X
- Publication type
Article
- DOI
10.3176/oil.2006.2.02