The invention relates to the technical field of coking
tail gas treatment, in particular to a washing
system and method for
tail gas of a blower cooling tank area. The
system comprises a water washingtower, an
acid washing tower, an alkaline washing
tower, an
activated carbon adsorption
tower, a fan and a
tail gas pipeline, wherein the
water washing tower, the
acid washing tower, the alkaline washing tower and the
activated carbon adsorption tower are connected in series through pipelines and then connected with the tail
gas pipeline through a first connecting
pipe, and the fan is mounted onthe first connecting
pipe; and the tail
gas pipeline comprises a main tail gas
pipe and first to sixth
branch tail gas pipes, the first
branch tail gas pipe is connected with a mechanical
ammonia water clarification tank and a
tar separator, the second
branch tail gas pipe is connected with a residual
ammonia water tank, the third branch tail gas pipe is connected with a
tar intermediate tank, a super
centrifuge and an air floatation
tar remover, the fourth branch tail gas pipe is connected with a circulating
ammonia water tank, the fifth branch tail gas pipe is connected with a tar
storage tank, and the sixth branch tail gas pipe is connected with a blower cooling underground tank and a blower water seal tank. According to the invention, the
process requirements of a drum condensation tank area are met, and the purpose of
zero emission of tail gas in the tank area of a blower cooling procedure is achieved.