Deordorizing and purifying system for delayed coking device and deordorizing and purifying method thereof

The invention provides a deordorizing and purifying system for a delayed coking device. The deordorizing and purifying system is arranged at the top of each pair of coke towers and comprises a vacuumizer and a separation tank, a gas outlet at the top of each coke tower is connected with a gas inlet of the vacuumizer, a gas outlet of the vacuumizer is connected with a gas inlet of the separation tank, an outlet of a cold coke water pump is connected with a liquid-phase inlet of the separation tank, and a gas outlet at the top of the separation tank is connected with air while a material outlet at the bottom of the same is connected with a cold coke tank. By arranging the vacuumizer and the separation tank at the top of the coke tower and using cold coke water to wash waste gas and coke powder from the top of the coke tower, pervading of water vapor around the coke tower after being uncovered can be effectively reduced, and environment pollution caused by emission of hazardous gas can be reduced, and influence