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以D72树脂为载体,负载Ni~(2+)、Co~(2+)后制备高活性吸附脱氮剂,采用傅里叶变换红外光谱(FT-IR)分析吸附剂的骨架结构,采用N2吸附-脱附(BET)测定吸附剂的比表面积和孔分布情况。以焦化蜡油为原料,在全混流反应釜中进行吸附脱氮实验。考察吸附温度、吸附时间、剂油质量比等对吸附剂吸附性能的影响。结果表明,在吸附温度为40℃、吸附时间为60min、剂油质量比为1:10、金属负载量为5wt%的条件下,改性树脂对焦化蜡油有较好的吸附效果,脱氮率达到80.08%。动力学研究结果表明,改性树脂与焦化蜡油中碱性氮化物的吸附反应符合准二级动力学模型,其相关系数大于0.99;通过计算,确定了动力学方程中的参数。
The D72 resin was used as a carrier to prepare high activity adsorbents with Ni 2+ and Co 2+. The structure of adsorbents was analyzed by Fourier transform infrared spectroscopy (FT-IR) Adsorption - desorption (BET) determination of adsorbent specific surface area and pore distribution. Coker gas oil as raw material, in a mixed flow reactor for adsorption denitrification experiments. The effects of adsorption temperature, adsorption time and mass ratio of oil to adsorbent on adsorption performance were investigated. The results showed that the modified resin had better adsorption effect on coker gas oil under the condition of 40 ℃ adsorption temperature, 60min adsorption time, 1: 10 oil mass ratio and 5wt% Rate reached 80.08%. The kinetic results show that the adsorption of basic nitrides in the modified resin and coker gas oil is in accordance with quasi-second-order kinetic model, and the correlation coefficient is greater than 0.99. The parameters in the kinetic equation are determined by calculation.