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• 基金项目：国家自然科学基金

• 周平

• 何嘉汉

• 钱易

• 摘要：通过内循环三相生物流化床反应器(ITFB)的清水试验,对其相含率及氧的传递特性进行了研究。结果表明:ITFB与传统三相生物流化床相比具有不同的氧传递条件,当供气量较小时,内筒传质系数K_La1大于外筒的传质系数K_La2,而当供气量较大时,则K_La2>K_ta1.在本试验条件下,当载体投加量大于1.6kg时,K_La随C_s的增加而增加。

• Abstract：Study on the gas holdup and oxygen transfer in a internal-circulation three-phase biofluidised bed (ITFB) with tap water was conducted. The results showed that oxygen transfer condition in a ITFB was better than that in a conventional three-phase biofluidised bed.When gas flux was low, the riser oxygen transfer coefficient K_Lal was greater than K_la2 in downcomer, while, K_La2 was greater than K_La2 when gas flux was high. K_La increase with the increase of carrier concentration when the total amount of carrier was above 1. 6 kg.

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