By Guangxi Yue, Shuiqing Li
This ebook gathers the complaints of the eighth foreign Symposium on Coal Combustion. The contributions replicate the most recent learn on coal caliber and combustion, innovations for pulverized coal combustion and fluidized mattress combustion, exact matters relating to CO2 trap (CCS), business functions, and so forth. – features which are of serious value in selling educational communications among comparable parts and the technical improvement of coal-related fields.
The overseas Symposium on Coal Combustion (ISCC), subsidized and arranged by way of Tsinghua collage because 1987, has demonstrated itself as a huge platform permitting scientists and engineers to interchange details and concepts at the technological know-how and expertise of coal combustion and similar concerns, and to forge new partnerships within the becoming chinese language marketplace. Researchers within the fields of unpolluted coal combustion, carbon dioxide seize and garage, coal chemical engineering, power engineering, and so forth. will tremendously reap the benefits of this book.
Guangxi Yue, professor of the dep. of Thermal Engineering in Tsinghua college, Beijing, China, and a member of chinese language Academy of Engineering(CAE). Shuiqing Li, professor of the dept of Thermal Engineering in Tsinghua collage, Beijing, China.
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Extra resources for Clean Coal Technology and Sustainable Development: Proceedings of the 8th International Symposium on Coal Combustion
Keywords TG-DSC 1 Á Primary air ratio Introduction In the past ten years, more than 80 % of Chinese electricity production comes from burning coal, biomass, nature gas, petroleum coke, and oil, among them, burning coal based, and this trend will continue in the coming decades. For the consideration of efﬁcient and environmentally acceptable use B. Zhang Á F. Yue Á Y. Liu Á P. cn Á Ignition temperature Á Coal combustion Á Boiler of coal, many efforts have being invested . With the purpose of optimizing the combustion processes, many studies have been developed by research departments and industrial companies, such as air staging combustion, which is conducive to reduce the emission of pollutants and facilitate flame stability of coal combustion.
D) Protonated aromatic carbons. (e) Oxidized aliphatic carbons. (f) Methoxy carbons Physicochemical Properties and Pyrolysis Characteristics … 200 °C, indicating the process for promoting the characteristics of lignite occurs above 200 °C. The relative strength of carboxyl carbons at the intensity of 65–220 ppm and oxidized aliphatic carbons and methoxy carbons at 60–90 ppm is reduced by about 25 and 20 %, respectively; the increase in relative strength of oxygen-substituted aromatic carbons at 135–165 ppm is ascribed to OCH3 transform into –OH, which is in accord with the increase in hydroxy phenol at 154 ppm; the relative strength of carbon-substituted aromatic carbons and protonated aromatic carbons at 128 ppm is increased by about 20 and 5 %, respectively, which fully demonstrate the extent of aromatization degree is deepening and the coal rank is greatly improved.
The ﬁrst derivative of DSC curves of coals examined herein is shown in Fig. 3. Based on the aforementioned mathematical model, the intensive ignition temperature (Tig) and the corresponding conversion ratio of combustible matter (R) are listed in Table 2. As can be observed, the intensive ignition temperature, Tig, of JWY anthracite is higher than that of ZCY bituminous and SLH lignite. 33 %) of parent coal. This behavior could be taken as an indication of heterogeneous ignition, as the ignition occurs after the emission of the overall volatile matter, and then, the char is oxidized.