The flue gas treatment unit of FCC unit is the core unit to achieve environmental protection emission standard.The domestic FCC flue gas treatment mostly adopts wet desulfurization,in the equipment dust removing is integrated.This technology also brings the problem of wearing equipment and pipeline by particulate matters enriched in the slurry,and the waste water containing high concentration of catalyst fine powder needs to be cleaned up frequently.This paper introduces a newly built 2.8 million t/a FCC unit in a petrochemical enterprise's project.In order to meet the environmental protection requirements,the bag filter+sodium alkaline washing technology is chosen in the flue gas desulfurization and dust removal unit through scheme comparison and demonstration.This paper focuses on construction,system configuration characteristics and initial operation situation of the bag filter.
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