CAJ | 학술논문

采用搅拌釜研究了ZSM-5分子筛(SiO2/Al2O3=100)对水吸收二氧化碳的增强作用.考察了气相浓度、初始压力和固含率对增强因子的影响.结果表明,初始压力与气相浓度对吸收具有显著影响,增强因子随初始压力与气相浓度的增大而减小.固含率对增强因子的影响为:当固含率小于0.4 kg?m?3时,增强因子随固含率的增加迅速增大;当固含率大于0.4 kg?m?3时,增强因子的增加逐渐变缓并最终趋于恒定值.作者还提出了一个一维非均相传质模型并进行了理论求解,模拟预测值和实验结果吻合良好.
채용교반부연구료ZSM-5분자사(SiO2/Al2O3=100)대수흡수이양화탄적증강작용.고찰료기상농도、초시압력화고함솔대증강인자적영향.결과표명,초시압력여기상농도대흡수구유현저영향,증강인자수초시압력여기상농도적증대이감소.고함솔대증강인자적영향위:당고함솔소우0.4 kg?m?3시,증강인자수고함솔적증가신속증대;당고함솔대우0.4 kg?m?3시,증강인자적증가축점변완병최종추우항정치.작자환제출료일개일유비균상전질모형병진행료이론구해,모의예측치화실험결과문합량호.
The enhancement of mass transfer of CO2 absorption into water by molecular sieve (Zeolite SiO2/Al2O3=100) was studied in a stirred tank. The effects of gas concentration, pressure and solid loading on the enhancement factor were investigated. The results show that the pressure and gas concentration affect significantly the CO2 absorption process, and the enhancement factor decreases with the increase of the pressure and gas concentration. The effects of solid loading on the enhancement factor are as follows: when the solid loading is below 0.4 kg?m?3, the enhancement factor increases obviously with the increase of the solid loading;when the solid loading is beyond 0.4 kg?m?3, the increase becomes slower, finally the enhancement factor levels off to a constant value. An 1-D heterogeneous model was proposed and solved theoretically, the calculated value agrees well with the experimental data.