关键词: 连续重整装置, 催化剂, 粉尘, 强度, 提升风, 干燥器, 淘析, 超温

Abstract:

An analysis was conducted on the reasons for the increase in catalyst dust in the 600,000 TPY CCR of PetroChina Changqing Petrochemical Company. It was found that poor mechanical strength of the catalyst, non-standard catalyst loading and equipment installation, and fluctuations in the operation of the catalyst regeneration unit were the main reasons for the increase in dust in the unit. The following measures should be taken: In the early stage of device operation, catalyst selection work and standardization of catalyst loading and unloading operations should be done well, and internal inspections of equipment pipelines should be strengthened. During the operation of the device, it should be ensured that the catalyst is steadily elevated; Replace the regeneration gas dryer and monitor the water content of the regeneration gas; Adjust the air volume for elution, strengthen the inspection of dust collectors, and ensure the effectiveness of elution; Optimize the regeneration of coke and adjust the temperature of the regeneration bed layer coke to not exceed 565 ℃.By implementing the above measures, there was no significant increase in catalyst dust in the reaction and regeneration system of the CCR. The daily catalyst dust amount decreased from the highest value of 2.1 kg/d to 1.0～1.3 kg/d, effectively solving the problem of increased dust in CCR and ensuring long-term safe and stable operation of the unit.

Key words: CCR, catalyst, dust, strength, elevated air, dryer, elutriation, over-temperature