Residue oil trough tail gas treatment method

The invention relates to a residue oil trough tail gas treatment method. The residue oil trough tail gas treatment method comprises the treatment steps that regenerator residue oil passes through a residue discharging valve to flow into a residue oil trough, generated tail gas passes through a tail gas collecting valve to be pumped to a tail gas purifying device cylinder by a Venturi tube and sprayed by a spray head connected with a spraying tube, and then condensed spraying liquid passes through a device outlet valve, flows into an underground oil trough and is pumped into the Venturi tube bya washing liquid self-priming pump to be recycled; make-up fluid is condensed fluid from a coke oven gas tube subjected to benzene washing, the make-up fluid flows through a liquid discharging valveto flow into a gas water seal, and passes through a water seal sewage-discharging valve to flow into the underground oil trough, and the redundant spraying liquid passes through a spraying liquid external delivery valve to be