Being the blast furnace gas pure equipment which purifies the blast furnace

摘要

PROBLEM TO BE SOLVED: To provide a facility for cleaning a blast furnace gas, which can surely clean dust deposited on a dust-collecting plate in a short period, has a simple facility structure, and is easily maintained, by arranging spray nozzles at such positions that some spray nozzles spray washing water overlappingly onto the same part of adjacent dust-collecting electrodes, and to provide an operation method therefor.;SOLUTION: The facility for cleaning the blast furnace gas cleans the blast furnace gas generated in the blast furnace having the pressure recovery facility of the blast furnace top, and includes a wet dust-collecting section having a variable throat and an electrostatic dust-collecting section. The electrostatic dust-collecting section includes a plurality of dust-collecting electrodes which are radially partitioned by the dust-collecting plate 3, and a discharge wire arranged at the center of each dust-collecting electrode. The facility also includes an annular pipe 7 for supplying the washing water for removing the dust deposited on the dust-collecting plate arranged at the center part of the top face of the electrostatic dust-collecting section, a branch pipe 8 arranged in an inward direction and an outward direction of the annular pipe, and the spray nozzles 9 installed at the end of each branch pipe; and makes some of the spray nozzles spray the washing water overlappingly onto the same part of the adjacent dust-collecting electrodes.;COPYRIGHT: (C)2008,JPO&INPIT