The invention discloses a method and a device for
processing wet
quenching coke gas
fog on the basis of athermal
plasma injection. The method comprises the following steps that: in the ascending process, the hot gas
fog generated by wet
quenching coke sequentially passes through three
processing steps including
spray cooling, pre-dedusting on a baffle plate and athermal
plasma purification, and is cooled in a
spray cooling area; the cooled gas
fog enters a pre-dedusting area on the baffle plate where the thicker and bigger water particles and
coke powder in the gas fog are separated from the gas fog and
impact to the baffle plate under the action of
inertia; the remaining gas fog continues to ascend and enter an athermal
plasma purification area where organic components,
ammonia nitrogen and
cyanide in the gas fog are oxidized by the athermal plasma; the water particles and the coke
powder are charged and are transferred to a
trapping pole plate directionally under the action of a
high voltage electric field; and then the gas flow after subjected to the athermal plasma purification area continuous to ascend to the top of a coke
quenching tower to be discharged. After the
processing steps, the contents of
water vapor and the coke
powder discharged outside after one
ton of coke is produced are controlled to be less than 0.05
ton and 5 grams respectively, and the removal rate of the organic components, the
ammonia nitrogen and the
cyanide can reach more than 80 percent.