关键词: 高效, 低压力降, 烟气脱硫, 除尘, 除雾, 白烟, 洗涤塔, 颗粒物

Abstract:

There are some problems in residue FCC flue gas desulfurization and dedusting device of SINOPEC Guangzhou Company, such as difficult to meet the special emission limit of the discharged purified flue gas particulate matters, high pressure drop of the device, and white smoke and dust rain around the chimney. The device is reformed by using the technology of high efficiency low pressure drop desulfurization, dedusting and mist separation of flue gas. The results show that the average mass concentration of particulate matter and SO₂ in the purified flue gas discharged from scrubber monitored online by CEMS is only 12.8 and 3.7 mg/m³ respectively, the mass concentration of particulate matter monitored on site by the third-party detection agency is less than 4 mg/m³ and SO₂ is not detected, which are better than the requirements of the special emission limit for atmospheric pollutants in the GB 31570—2015 Emission standard of pollutants for petroleum refining industry. After reformation, the scale and length of white smoke decreases, the phenomenon of dust rain disappears, and the pressure drop of the scrubber is 1.1 kPa lower than that of the original scrubber, saving 0.381 million yuan per year.

Key words: high efficiency, low pressure drop, flue gas desulfurization, dedusting, mist separation, white smoke, scrubber, particulate matter