ABSTRACT

Traditionally, in engineering applications, VOC (volatile organic compound) emissions are usually under non-steady states due to intermittent emissions and concentration fluctuations, which adversely affects the stable and reliable operation of many existing purification systems and may constitute a safety hazard. However, previous studies on VOC adsorption by adsorbents have mostly focused on the adsorption performance and properties of different modified adsorbents. Few studies of VOC adsorption have focused on adsorption or movement for unsteady-state VOCs using activated carbon adsorption beds. This study investigated three common and important factors (load time ratio, load mode and no-load flow rate) that affect the adsorption of unsteady-state VOCs by activated carbon. This allowed the migration and movement of VOCs between activated carbon adsorption beds under different factors to be analyzed, which provides important insights in understanding VOC adsorption and can promote the development of homogeneous buffering technology for non-steady state VOCs. In addition, this information provides support for the development of pollution control processes for tidal VOCs discharge airflows that result from storage and transportation operations, and also provides parameters that could support practical applications of activated carbon to adsorb unsteady-state VOCs.

摘要

传统上，在工程应用中，VOC（挥发性有机化合物）的排放通常由于间歇性排放和浓度波动而处于非稳态，这对现有许多净化系统的稳定可靠运行产生不利影响，并可能构成安全隐患。然而，以往对吸附剂吸附VOC的研究大多集中在不同改性吸附剂的吸附性能和性质上。很少有关于 VOC 吸附的研究集中在使用活性炭吸附床对非稳态 VOC 进行吸附或移动。本研究调查了影响活性炭吸附非稳态 VOC 的三个常见且重要的因素（负载时间比、负载模式和空载流量）。这使得可以分析不同因素下活性炭吸附床之间 VOCs 的迁移和移动，这为理解 VOCs 吸附提供了重要的见解，并可以促进非稳态 VOCs 均质缓冲技术的发展。此外，该信息为开发存储和运输操作产生的潮汐 VOCs 排放气流的污染控制过程提供了支持，还提供了可以支持活性炭吸附非稳态 VOCs 的实际应用的参数。