Evaluation of Activated Carbon Adsorbents for CO2 Capture in Gasification
Evaluation of Activated Carbon Adsorbents for CO2 Capture in Gasification
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DOI：
10.1021/ef8010614
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发表时间：
2009-04
期刊：
影响因子：
5.3
通讯作者：
T. Drage;James M. Blackman;C. Pevida;C. Snape
中科院分区：
文献类型：
--
作者：
T. Drage;James M. Blackman;C. Pevida;C. Snape
活性炭吸附剂已在高达 4 MPa 的高压下进行了评估，以确定其从气化产生的合成气中去除二氧化碳的适用性。 CO2 吸附能力和扩散机制被证明取决于吸附剂脱气条件。活性炭已被证明比现有吸收系统具有更高的吸附能力，在强脱气条件下，在 4 MPa 下吸附能力高达 12 mmol g−1。已证明基于重量的吸附能力与材料的表面积和微孔体积相关。然而，基于体积的性能不太明确，并且由吸附剂的形状和堆积密度控制。变压再生循环已证明吸附剂的完全循环再生。
Activated carbon adsorbents have been evaluated at high pressure, up to 4 MPa, to determine their applicability for the removal of CO2 from syngas generated from gasification. The CO2 adsorption capacity and diffusion mechanism were demonstrated to be dependent upon the adsorbent outgas conditions. Activated carbons have been demonstrated to have higher adsorption capacities than existing absorption systems up to 12 mmol g−1 at 4 MPa, under strong outgas conditions. Adsorption capacities on a weight basis have been demonstrated to be correlated with the surface area and micropore volume of the materials. However, performance on a volumetric basis is less well-defined and is controlled by the form and bulk density of the adsorbent. Complete cyclic regeneration of the adsorbents has been demonstrated by pressure swing regeneration cycles.