关键词: 催化裂化装置, 油浆, 低温脱固, 固含量, 针状焦, 撬装设备

Abstract:

To achieve high value-added utilization of FCC slurry oil, it is particularly crucial to choose high efficient and low consumption slurry oil solid particle removal technology. Based on the long-term application of slurry oil low-temperature solid particle removal technology in FCC unit, it is proved that the technology has strong adaptability to feedstocks, with a solid content of no more than 50 g/L, a gum mass fraction of no more than 15%, an asphaltene mass fraction of no more than 10%, and the solid content of the desolidified slurry oil remains stable less than 100 μg/g for a long term, which meets the requirements of needle coke feedstocks; the operating temperature is 160～180 ℃, which is relatively low, with low fuel consumption and low operating cost; the yield of purified slurry oil is as high as 99%, without producing backwash oil or concentrated slurry oil; solid and liquid slurry oil are completely separated, and the powdery filter residue is basically oil-free; the equipment occupies a small area, has few supporting public works, is easy to operate, and has low operating pressure, with a high safety factor in production and operation. It can achieve long-term continuous production of the unit, meeting the requirements of reducing costs and increasing efficiency.

Key words: FCC unit, slurry oil, low-temperature solid particle removal, solid particle content, needle coke, skid-mounted equipment