國內 無煙炭의 循環流動層 보일러에서 脫黃 特性 硏究 = A Study of Desulfation Characteristics of Circulating Fluidized Bed Combustion for Domestic Anthracite

다국어 초록 (Multilingual Abstract)

Circulating fluidized bed combustion (hereafter CFBC) technology enables an efficient combustion for the materials with low heating values such as high ash coal and sludges. It also has desulfation function by adding limestone directly to combustor. The CFBC has been considered as one of the best processes for low grade coal containing with large contents of ash and sulfur. In this paper, in order to various tests were performed to find the optimum desulfation condition for CFBC using Korean Anthracite. We surveyed possible parameters and conducted desulfation efficiency test in D Thermal Power Plant. In addition. the result of some fundamental theoretical consideration was discussed with CFBC.
Optimum limestone size could be considered to be 0.1~0.3 mm irrespective of combustion temperature and Ca/S molar ratio variation.
Desulfation efficiency increased as the molar ratio increased. Because desulfation process occurs at the surface at higher temperature. inner side of limestone can't be utilized. When surface area is not appropriate, some SO₂ emit without reaction. Optimum molar ratio should be decided after considering chemical and physical properties of limestone and coal thoroughly such as particle size, pore size and HGI. Commercial CFBC is operated at Ca/S 1.6. Combustor temperature 840~870℃ shows good desulfation efficiency.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 탈황방법 및 원리
• 3. 실험 및 방법
• 4. 결과 및 고찰
• 5. 결론
• 참고문헌

참고문헌 (Reference)

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