Method for judging arsenic poisoning and inactivation of SCR (Selective Catalytic Reduction) denitration catalyst

• Main Authors: LUO YANPEI, YAO YAN, LEI SIYUAN, FANG CHAOJUN, WANG LIPENG, WANG LELE, WANG KAI, BAO QIANG, KONG FANHAI, HE CHUAN, MA YUNLONG, YANG XIAONING
• Format: Patent
• Language: Chinese; English
• Published: 18.04.2023
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention discloses a method for judging arsenic poisoning inactivation of an SCR (Selective Catalytic Reduction) denitration catalyst, which comprises the following steps: carrying out denitration performance analysis to obtain activity decreasing amplitude data of an in-service SCR denitration catalyst, and judging whether the SCR denitration catalyst is abnormally inactivated or not; microcosmic characteristic analysis is carried out, microcosmic specific surface area decreasing amplitude data of the in-service SCR denitration catalyst is obtained, and whether abnormal inactivation occurs or not is judged; and active component analysis is carried out, arsenic concentration data at multiple positions of the in-service SCR denitration catalyst are obtained, and whether arsenic poisoning occurs or not is judged. According to the method, whether the SCR denitration catalyst is subjected to arsenic poisoning or not is quantitatively judged based on denitration performance evaluation of the SCR denitration c