Abstract: The substitution of caustic dechlorination process by the application of GL-1 dechlorination adsorbent (developed by Research Institute of Petroleum Processing) in treating flue gas from catalyst regeneration process of aromatics unit at Tianjin Petrochemical Company is introduced. Industrial test results show that the application of GL-1 dechlorination adsorbent is successful; it can well meet the requirement of caustic dechlorination process, thus caustic dechlorination process can be substituted. The HCl content in treated flue gas emission is less than 1 μg/g, which meets the national emission requirement. The adsorbent exhibits good resistance to water and sliming. However, the dechlorination efficiency of this dechlorination adsorbent can be further enhanced by improving the solid dechlorination technology.

Key words: aromatics unit, venting gas, caustic dechlorination , antichlor, corrosion