| 摘要 |
PURPOSE:To enable the extraction and removal of odorous component pre-venting the thermal deterioration of the fermentation product owing to the relatively low treatment temperature, without causing the problem of resid ual toxicity, by treating a fermentation product with carbon dioxide gas. CONSTITUTION:A fermentation product and an adsorbent are charged into an autoclave, and the valve 2 is opened to introduce liquefied carbon dioxide gas from the bomb 1 to the autoclave. The valve 2 is closed and the valve 3 is opened to release air and carbon dioxide gas from the autoclave 4. The autoclave 4 is cooled and the liquefied carbon dioxide gas is filled therein. The valve 3 is closed and the valve 2 is opened until the pressure in the autoclave 4 reaches a specific level, when the valve 2 is closed. The autoclave 4 is filled with the fermentation product, the adsorbent and liquefied carbon dioxide gas by this process, the thermal medium 6 is supplied to the thermal medium tank 5, the content of the autoclave is heated above the critical temperature of carbon dioxide gas (31.3 deg.C), and after a specific time interval, the valve 3 is opened to discharge carbon dioxide gas. |
