| 초록 |
As the world seeks alternatives and better ways to meet demands of reliable energy supply, coal-to-liquids (CTL) technology is increasingly being recognized. In CTL technology, the key process is the Fisher-Tropsch process that is a catalyzed chemical reaction in which CO and H2 are converted into liquid hydrocarbons of various forms. Typical catalysts used are based on iron and cobalt which could be seriously contaminated by H2S. The raw gas which is containing CO and H2 is produced by coal gasification process. The CO/H2 ratio and the amount of H2S in the raw gas significantly affect both hot gas desulfurization and Fisher-Tropsch processes. In this study, a commercial simulator, Aspen Plus is used to select a proper coal to produce an adequate CO/H2 ratio for Fisher-Tropsch process and a low amount of H2S in the raw gas for reducing energy requirements of hot gas desulfurization process. |
