The invention belongs to the field of
petrochemical industry, and provides a treatment method for overflow of oil-containing and
odor-resistant cold
coke water of needle
coke, a contact
cooling tower is newly added and is divided into an upper independent part and a lower independent part, the lower part is used for cooling and purging oil gas, and the upper part is used for overflow treatment of the cold
coke water, so that function division is realized; purging oil gas from a coke
tower firstly enters the lower portion of the contact
cooling tower to be cooled, the cooled
gas phase enters the air cooler to be cooled, and follow-up treatment is carried out after separation of the separation tank; coke cooling water from a coke
tower overflows and then enters the upper portion of the contact
cooling tower, a flocculating agent is added to promote oil products in the coke cooling water to be gathered at the
tower bottom of the upper portion and then extracted, a water phase obtained after oil removal enters the coke cooling
water storage tank to be recycled, and a
gas phase is discharged from the tower top and is subjected to follow-up treatment through the air cooler. The method provided by the invention can effectively solve the problems that in the overflow process of the cold coke water of the needle coke, oil products contained in the coke enter the
storage tank along with the cold coke water to cause oil accumulation in the tank, and the oil products are mixed into the cold coke water
system to cause peculiar smell in the tank area.