东南大学学报（自然科学版）2017，Vol.47Issue(4)：818-824,7.DOI:10.3969/j.issn.1001-0505.2017.04.029
θ环填料塔中飞灰对TETA溶液吸收CO2性能的影响
Influence of fly ash on CO2 absorption using TETA solutionin a θ-ring packed column
摘要
Abstract
To understand the influence of fly ash in the flue gas generated from coal-fired power plants on the CO2 absorption performance using triethylenetetramine(TETA) as the absorbent, experiments were carried out by using a self-designed packed column filled with stainless steel θ-ring packing and introducing fly ash into the liquid phase.The effect laws of the process conditions, such as the solution temperature, the liquid-gas ratio, the packed height and the fly ash concentration on CO2 absorption efficiency η and the overall mass-transfer coefficient KGaV by using TETA solution were studied.The results show that the presence of fly ash in the TETA solution results in the decrease of CO2 absorption efficiency η and the overall mass-transfer coefficient KGaV, and the influence of fly ash on η and the KGaV becomes more significant with the increasing fly ash concentration.With the increase of the solution temperature, CO2 absorption efficiency η increases firstly and decreases subsequently using TETA solution and TETA with the fly ash solution, but the KGaV only shows a steady increasing tendency.With the increase of the liquid-gas ratio, CO2 absorption efficiency η and the KGaV of these two solutions increase rapidly.With the increase of the packed height, CO2 absorption efficiency η and KGaV also increase correspondingly, but KGaV increases faster.The decrease amplitude of η and the KGaV caused by fly ash becomes smaller with the increase of the solution temperature, the packing height and the liquid-gas ratio.关键词
三乙烯四胺(TETA)/飞灰/CO2捕集/填料塔/分布Key words
triethylenetetramine(TETA)/fly ash/CO2 capture/packed column/distribution分类
能源科技引用本文复制引用
谢文霞,张军,徐成威,涂春民,吕剑虹,钟辉..θ环填料塔中飞灰对TETA溶液吸收CO2性能的影响[J].东南大学学报（自然科学版）,2017,47(4):818-824,7.基金项目
国家重点基础研究发展计划(973计划)资助项目(2013CB228504)、国家自然科学基金资助项目(51576043). （973计划）
