| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a carbon dioxide gas circulation type limestone burning furnace which can recover a large amount of carbon dioxide gas with high purity which is generated by the decomposition of limestone and discharged from a limestone burning furnace when limestone is burned, and which enables utilization of the carbon dioxide gas as a liquefied carbon dioxide and underground fixing treatment thereof. <P>SOLUTION: The carbon dioxide gas generated by the decomposition of limestone is circulated using a carbon dioxide gas circulating fan 106. The circulated carbon dioxide gas is heated to a burning temperature without incorporation of combustion gas with an electrical heater 107 or a radiant tube heater, whereby the temperature and the amount of heat required for burning limestone are ensured to burn limestone. The carbon dioxide gas 4 with high purity generated at this time is bled from a burning furnace outlet piping, stored, and treated. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
