Development and performance characterization analysis of high‐efficiency liquid‐phase dechlorination agent for catalytic reformate

Abstract The introduction of chlorides in the reforming unit has brought about significant impacts on the production process. To reduce the chlorides in the reformate and minimize their influence on the downstream production process, this paper developed a highly efficient liquid‐phase dechlorination agent, mainly composed of alkali metals, zeolite, and sepiolite, which was prepared using a one‐pot method. The optimal process conditions were determined through orthogonal experiments and range analysis. For the dechlorination agent with the screened optimal ratio, its operating chlorine capacity reached 44.08%. The dechlorinating agent was characterized using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), Brunauer–Emmett–Teller method (BET), and X‐ray diffraction (XRD), while the influence of sepiolite was also investigated. Additionally, temperature‐programmed desorption of ammonia (NH 3 ‐TPD) and Fourier transform infrared spectroscopy (FTIR) were employed to characterize the surface chemical structure of the dechlorination agent. Finally, a long‐term comparative experiment was conducted. The results showed that the dechlorination agent possessed a large specific surface area and abundant adsorption sites; the addition of sepiolite was beneficial to its dechlorination performance and stability, and the dechlorinating agent had the potential for industrial scale‐up.