CAJ | 학술논문

为了解燃煤烟气中灰颗粒对化学吸收法脱除CO2性能的影响，选用典型的K2 CO3溶液作为吸收剂，利用乱堆θ环小型填料塔，采用液相加入灰的方式，进行了实验研究。考察了吸收液温度、填料塔高度、液气比、灰颗粒浓度等工艺条件对灰作用的影响规律。结果表明，灰的存在使脱除CO2的效率降低，灰对脱除效率降低的影响与其化学成分关系不大，但与操作参数有关；随着吸收液温度或填料高度的增加，灰对CO2脱除效率的影响减弱；随着液气比的增加，灰对CO2脱除效率的影响有上升的趋势；随着灰颗粒浓度的增大，灰对CO2脱除效率的影响逐渐增大，最后趋于稳定。分析表明，对灰的影响主要是通过改变吸收液初始分布而实现的。
위료해연매연기중회과립대화학흡수법탈제CO2성능적영향，선용전형적K2 CO3용액작위흡수제，이용란퇴θ배소형전료탑，채용액상가입회적방식，진행료실험연구。고찰료흡수액온도、전료탑고도、액기비、회과립농도등공예조건대회작용적영향규률。결과표명，회적존재사탈제CO2적효솔강저，회대탈제효솔강저적영향여기화학성분관계불대，단여조작삼수유관；수착흡수액온도혹전료고도적증가，회대CO2탈제효솔적영향감약；수착액기비적증가，회대CO2탈제효솔적영향유상승적추세；수착회과립농도적증대，회대CO2탈제효솔적영향축점증대，최후추우은정。분석표명，대회적영향주요시통과개변흡수액초시분포이실현적。
To understand the influence of the ash particles in the flue gas generated from coal com-bustion on the absorption performance of CO2 by the chemical absorption method, the typical K2 CO3 solution was employed as the absorbent, and experiments were carried out by using a small packed absorber filled withθ-ring packing and introducing the ash from the liquid phase.The effects laws of the process conditions, including the absorption liquid temperature, the packing height, the liquid-gas ratio and the concentration of the ash particles, on the ash action were studied.The results show that the existence of the ash can reduce CO2 removal efficiency.The effect of the ash on the removal efficiency is not related to its chemical composition but to the operation parameters.With the in-crease of the absorption liquid temperature or the packing height, this effect is weakened.With the increase of the liquid-gas ratio, this effect has a tendency to rise.With the increase of the concentra-tion of the ash particles, this effect increases gradually and finally tends to be stable.Therefore, the influence of the ash can be achieved by changing the initial distribution of the absorption liquid.