Method for optimizing recovery of crude benzene from coke oven gas

The invention relates to a method for optimizing recovery of crude benzene from coke oven gas, which comprises the following steps: monitoring the actual discharge number and volatile components of coking to ensure the stability of a crude benzene production section; the circulating washing oil amount and the regeneration deslagging operation of circulating washing oil in the benzene washing process in the crude benzene production section are controlled, the quality of crude benzene is controlled, and the temperature of the top of the benzene removal tower is adjusted according to the quality of the crude benzene. The device and the system for recovering the crude benzene from the coke oven gas are the existing devices and systems, and the method is optimized, so that the crude benzene is recovered by monitoring the source of the crude benzene and the circulating washing oil quantity and the regeneration deslagging operation in the benzene washing process; after optimization of the method, the recovery rate o