According to the process characteristics of steel pretreatment line in shipbuilding industry,regenerative thermal oxidizer was used to treat the volatile organic compounds produced.Because a large amount of dust will be produced in the process of steel shot blasting,the treatment scheme of"pleated element filter+regenerative thermal oxidation"was finally determined.After the treatment plan was determined,the overall design,manufacturing,installation and commissioning of the equipment were carried out,and the calibrated continuous emission monitoring system was used to monitor the treated exhaust gas,so as to verify that its exhaust emissions meet the requirements of the highest emission limits of Jiangsu Province.