The invention belongs to the technical field of
environmental protection, and relates to an integrated purification technology of
flue (waste) gas, in particular to a conversion device of desulfurized and denitrified side products of active-
coke flue gas, a desulfurizing and denitrifying
system and a method. The conversion device comprises an absorbing
tower, an alkali preparation unit, an intermediate-product
storage tank, a neutralizing kettle, an
evaporator, a concentrated-material tank, a centrifugal unit and a
drying device, wherein the absorbing
tower is provided with a gas inlet end which is connected with a output end of
sulfur-dioxide gas released in the desulfurizing and denitrifying
system of the active-
coke flue gas; and the alkali preparation unit, the absorbing
tower, the intermediate-product
storage tank, the neutralizing kettle, the
evaporator, the concentrated-material tank, the centrifugal unit and the
drying device are connected in sequence. The conversion device, the desulfurizing and denitrifying
system and the method have the advantages that the production additional value of the desulfurizing and denitrifying system of the active-
coke flue gas can be increased, and the economic benefit can be improved, so that the economic and environment-friendly effects are achieved; the process is simple, the
layout is compact, the
energy consumption is low, and no waste water,
solid waste and secondary
pollution are caused, so that the resource recycling is realized.