【摘要】：為了研究氨基酸鹽吸收劑吸收CO2過程的傳質(zhì)特性,選取6種氨基酸鹽吸收劑在濕壁塔反應(yīng)器上進(jìn)行CO2吸收試驗(yàn),篩選出L-脯氨酸鉀、甘氨酸鉀、肌氨酸鉀為吸收劑類型,研究不同吸收劑濃度、CO2負(fù)荷、吸收溫度、濕壁塔內(nèi)、總壓力對吸收劑吸收CO2過程傳質(zhì)特性的影響.結(jié)果表明,吸收劑濃度和溫度的升高,能夠有效提高吸收劑液相傳質(zhì)系數(shù),得到該3種氨基酸鹽吸收劑吸收CO2的反應(yīng)速率常數(shù)與溫度的關(guān)系式;隨著吸收劑負(fù)荷的升高,液相傳質(zhì)系數(shù)將逐漸降低;而濕壁塔內(nèi)總壓力的升高能夠促進(jìn)CO2的吸收.氣相傳質(zhì)系數(shù)隨著濕壁塔內(nèi)總壓力的升高逐漸降低,總壓力為0.3 MPa時(shí)氣相傳質(zhì)系數(shù)較0.1 MPa降低86%.
[Abstract]:In order to study the mass transfer characteristics of absorption of CO2 by amino acid salt absorbers, six kinds of amino acid salt absorbers were selected to carry out CO2 absorption experiments in a wet wall column reactor. The L proline potassium, glycine potassium and sarcosine potassium were selected as absorbent types. The effects of different concentration of absorbent, CO2 load, absorption temperature, total pressure in wet wall column on mass transfer characteristics of absorbent absorption CO2 were studied. The results show that the mass transfer coefficient of liquid phase can be improved effectively by increasing the concentration and temperature of absorbent, and the relationship between the reaction rate constant and temperature of absorption of CO2 by these three kinds of amino acid absorbers is obtained. With the increase of absorbent load, the mass transfer coefficient of liquid phase will decrease gradually, and the increase of total pressure in the wet wall tower can promote the absorption of CO2. The mass transfer coefficient of the gas phase decreases with the increase of the total pressure in the wet wall tower. The mass transfer coefficient of the gas phase decreases 86% compared with the 0. 1 MPa when the total pressure is 0. 3 MPa.
【作者單位】： 浙江大學(xué)能源清潔利用國家重點(diǎn)實(shí)驗(yàn)室;
【基金】：國家自然科學(xué)基金資助項(xiàng)目(51076139,51276161) 國際合作資助項(xiàng)目(2013DFR60140) 浙江省自然科學(xué)基金資助項(xiàng)目(LY13E060004)
【分類號】：X701

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